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several bugfixes
[peach-html5-editor.git] / parse-html.coffee
index 318422b..73eda84 100644 (file)
 
 
 # This file implements a parser for html snippets, meant to be used by a
-# WYSIWYG editor. Hence it does not attempt to parse doctypes, <html>, <head>
-# or <body> tags, nor does it produce the top level "document" node in the dom
-# tree, nor nodes for html, head or body.
+# WYSIWYG editor.
+
+# The implementation is a pretty direct implementation of the parsing algorithm
+# described here:
+# http://www.w3.org/TR/html5/syntax.html#preprocessing-the-input-stream
+#
+# Deviations from that spec:
+#
+#   Purposeful: search this file for "WTAG"
+#
+#   Not finished yet: search this file for "fixfull", "TODO" and "FIXME"
+
+
+# stacks/lists
+#
+# the spec uses a many different words do indicate which ends of lists/stacks
+# they are talking about (and relative movement within the lists/stacks). This
+# section splains. I'm implementing "lists" (afe and open_els) the same way
+# (both as stacks)
 #
-# Instead, the data structure produced by this parser is an array of nodes.
+# stacks grow downward (current element is index=0)
 #
-# Each node is an array. The first element in the array is an integer (one of
-# the TYPE_* constants below) followed by the appropriate fields for that type
-# (shown below in the comments after the TYPE_* definition.)
+# example: open_els = [a, b, c, d, e, f, g]
+#
+# "grows downwards" means it's visualized like this: (index: el, names)
+#
+#   6: g "start of the list", "topmost", "first"
+#   5: f
+#   4: e "previous" (to d), "above", "before"
+#   3: d   (previous/next are relative to this element)
+#   2: c "next", "after", "lower", "below"
+#   1: b
+#   0: a "end of the list", "current node", "bottommost", "last"
+
+
+# browser
+# note: to get this to run outside a browser, you'll have to write a native
+# implementation of decode_named_char_ref()
+unless module?.exports?
+       window.wheic = {}
+       module = exports: window.wheic
+
+from_code_point = (x) ->
+       if String.fromCodePoint?
+               return String.fromCodePoint x
+       else
+               if x <= 0xffff
+                       return String.fromCharCode x
+               x -= 0x10000
+               return String.fromCharCode((x >> 10) + 0xd800, (x % 0x400) + 0xdc00)
 
+# Each node is an obect of the Node class. Here are the Node types:
 TYPE_TAG = 0 # name, {attributes}, [children]
 TYPE_TEXT = 1 # "text"
-TYPE_WHITESPACE = 2
-TYPE_COMMENT = 3
+TYPE_COMMENT = 2
+TYPE_DOCTYPE = 3
 # the following types are emited by the tokenizer, but shouldn't end up in the tree:
-TYPE_OPEN_TAG = 4
+TYPE_START_TAG = 4 # name, [attributes ([key,value]...) in reverse order], [children]
+TYPE_END_TAG = 5 # name
+TYPE_EOF = 6
+TYPE_AFE_MARKER = 7 # http://www.w3.org/TR/html5/syntax.html#reconstruct-the-active-formatting-elements
+TYPE_AAA_BOOKMARK = 8 # http://www.w3.org/TR/html5/syntax.html#adoption-agency-algorithm
 
-lc_alpha = "abcdefghijklmnopqrstuvwxqz"
-uc_alpha = "ABCDEFGHIJKLMNOPQRSTUVWXQZ"
+# namespace constants
+NS_HTML = 1
+NS_MATHML = 2
+NS_SVG = 3
+
+g_debug_log = []
+debug_log_reset = ->
+       g_debug_log = []
+debug_log = (str) ->
+       g_debug_log.push str
+debug_log_each = (cb) ->
+       for str in g_debug_log
+               cb str
+
+prev_node_id = 0
+class Node
+       constructor: (type, args = {}) ->
+               @type = type # one of the TYPE_* constants above
+               @name = args.name ? '' # tag name
+               @text = args.text ? '' # contents for text/comment nodes
+               @attrs = args.attrs ? {}
+               @attrs_a = args.attr_k ? [] # attrs in progress, TYPE_START_TAG only
+               @children = args.children ? []
+               @namespace = args.namespace ? NS_HTML
+               @parent = args.parent ? null
+               @token = args.token ? null
+               @flags = args.flags ? {}
+               if args.id?
+                       @id = "#{args.id}+"
+               else
+                       @id = "#{++prev_node_id}"
+       acknowledge_self_closing: ->
+               if @token?
+                       @token.flag 'did_self_close'
+               else
+                       @flag 'did_self_close', true
+       flag: (key, value = null) ->
+               if value?
+                       @flags[key] = value
+               else
+                       return @flags[key]
+       serialize: (shallow = false, show_ids = false) -> # for unit tests
+               ret = ''
+               switch @type
+                       when TYPE_TAG
+                               ret += 'tag:'
+                               ret += JSON.stringify @name
+                               ret += ','
+                               if show_ids
+                                       ret += "##{@id},"
+                               if shallow
+                                       break
+                               attr_keys = []
+                               for k of @attrs
+                                       attr_keys.push k
+                               attr_keys.sort()
+                               ret += '{'
+                               sep = ''
+                               for k in attr_keys
+                                       ret += sep
+                                       sep = ','
+                                       ret += "#{JSON.stringify k}:#{JSON.stringify @attrs[k]}"
+                               ret += '},['
+                               sep = ''
+                               for c in @children
+                                       ret += sep
+                                       sep = ','
+                                       ret += c.serialize shallow, show_ids
+                               ret += ']'
+                       when TYPE_TEXT
+                               ret += 'text:'
+                               ret += JSON.stringify @text
+                       when TYPE_COMMENT
+                               ret += 'comment:'
+                               ret += JSON.stringify @text
+                       when TYPE_DOCTYPE
+                               ret += "doctype:#{@name},#{JSON.stringify(@public_identifier ? '')},#{JSON.stringify(@system_identifier ? '')}"
+                       when TYPE_AFE_MARKER
+                               ret += 'marker'
+                       when TYPE_AAA_BOOKMARK
+                               ret += 'aaa_bookmark'
+                       else
+                               ret += 'unknown:'
+                               console.log "unknown: #{JSON.stringify @}" # backtrace is just as well
+               return ret
+
+# helpers: (only take args that are normally known when parser creates nodes)
+new_open_tag = (name) ->
+       return new Node TYPE_START_TAG, name: name
+new_end_tag = (name) ->
+       return new Node TYPE_END_TAG, name: name
+new_element = (name) ->
+       return new Node TYPE_TAG, name: name
+new_text_node = (txt) ->
+       return new Node TYPE_TEXT, text: txt
+new_character_token = new_text_node
+new_comment_token = (txt) ->
+       return new Node TYPE_COMMENT, text: txt
+new_doctype_token = (name) ->
+       return new Node TYPE_DOCTYPE, name: name
+new_eof_token = ->
+       return new Node TYPE_EOF
+new_afe_marker = ->
+       return new Node TYPE_AFE_MARKER
+new_aaa_bookmark = ->
+       return new Node TYPE_AAA_BOOKMARK
+
+lc_alpha = "abcdefghijklmnopqrstuvwxyz"
+uc_alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 digits = "0123456789"
 alnum = lc_alpha + uc_alpha + digits
 hex_chars = digits + "abcdefABCDEF"
 
+is_uc_alpha = (str) ->
+       return str.length is 1 and uc_alpha.indexOf(str) > -1
+is_lc_alpha = (str) ->
+       return str.length is 1 and lc_alpha.indexOf(str) > -1
+
 # some SVG elements have dashes in them
 tag_name_chars = alnum + "-"
 
 # http://www.w3.org/TR/html5/infrastructure.html#space-character
 space_chars = "\u0009\u000a\u000c\u000d\u0020"
+is_space = (txt) ->
+       return txt.length is 1 and space_chars.indexOf(txt) > -1
+is_space_tok = (t) ->
+       return t.type is TYPE_TEXT && t.text.length is 1 and space_chars.indexOf(t.text) > -1
+
+is_input_hidden_tok = (t) ->
+       return false unless t.type is TYPE_START_TAG
+       for a in t.attrs_a
+               if a[0] is 'type'
+                       if a[1].toLowerCase() is 'hidden'
+                               return true
+                       return false
+       return false
 
 # https://en.wikipedia.org/wiki/Whitespace_character#Unicode
 whitespace_chars = "\u0009\u000a\u000b\u000c\u000d\u0020\u0085\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000"
 
+unicode_fixes = {}
+unicode_fixes[0x00] = "\uFFFD"
+unicode_fixes[0x80] = "\u20AC"
+unicode_fixes[0x82] = "\u201A"
+unicode_fixes[0x83] = "\u0192"
+unicode_fixes[0x84] = "\u201E"
+unicode_fixes[0x85] = "\u2026"
+unicode_fixes[0x86] = "\u2020"
+unicode_fixes[0x87] = "\u2021"
+unicode_fixes[0x88] = "\u02C6"
+unicode_fixes[0x89] = "\u2030"
+unicode_fixes[0x8A] = "\u0160"
+unicode_fixes[0x8B] = "\u2039"
+unicode_fixes[0x8C] = "\u0152"
+unicode_fixes[0x8E] = "\u017D"
+unicode_fixes[0x91] = "\u2018"
+unicode_fixes[0x92] = "\u2019"
+unicode_fixes[0x93] = "\u201C"
+unicode_fixes[0x94] = "\u201D"
+unicode_fixes[0x95] = "\u2022"
+unicode_fixes[0x96] = "\u2013"
+unicode_fixes[0x97] = "\u2014"
+unicode_fixes[0x98] = "\u02DC"
+unicode_fixes[0x99] = "\u2122"
+unicode_fixes[0x9A] = "\u0161"
+unicode_fixes[0x9B] = "\u203A"
+unicode_fixes[0x9C] = "\u0153"
+unicode_fixes[0x9E] = "\u017E"
+unicode_fixes[0x9F] = "\u0178"
+
 # These are the character references that don't need a terminating semicolon
 # min length: 2, max: 6, none are a prefix of any other.
 legacy_char_refs = {
@@ -127,6 +328,208 @@ mathml_elements = [
 # foreign_elements = [svg_elements..., mathml_elements...]
 #normal_elements = All other allowed HTML elements are normal elements.
 
+special_elements = {
+       # HTML:
+       address:NS_HTML, applet:NS_HTML, area:NS_HTML, article:NS_HTML,
+       aside:NS_HTML, base:NS_HTML, basefont:NS_HTML, bgsound:NS_HTML,
+       blockquote:NS_HTML, body:NS_HTML, br:NS_HTML, button:NS_HTML,
+       caption:NS_HTML, center:NS_HTML, col:NS_HTML, colgroup:NS_HTML, dd:NS_HTML,
+       details:NS_HTML, dir:NS_HTML, div:NS_HTML, dl:NS_HTML, dt:NS_HTML,
+       embed:NS_HTML, fieldset:NS_HTML, figcaption:NS_HTML, figure:NS_HTML,
+       footer:NS_HTML, form:NS_HTML, frame:NS_HTML, frameset:NS_HTML, h1:NS_HTML,
+       h2:NS_HTML, h3:NS_HTML, h4:NS_HTML, h5:NS_HTML, h6:NS_HTML, head:NS_HTML,
+       header:NS_HTML, hgroup:NS_HTML, hr:NS_HTML, html:NS_HTML, iframe:NS_HTML,
+       img:NS_HTML, input:NS_HTML, isindex:NS_HTML, li:NS_HTML, link:NS_HTML,
+       listing:NS_HTML, main:NS_HTML, marquee:NS_HTML, meta:NS_HTML, nav:NS_HTML,
+       noembed:NS_HTML, noframes:NS_HTML, noscript:NS_HTML, object:NS_HTML,
+       ol:NS_HTML, p:NS_HTML, param:NS_HTML, plaintext:NS_HTML, pre:NS_HTML,
+       script:NS_HTML, section:NS_HTML, select:NS_HTML, source:NS_HTML,
+       style:NS_HTML, summary:NS_HTML, table:NS_HTML, tbody:NS_HTML, td:NS_HTML,
+       template:NS_HTML, textarea:NS_HTML, tfoot:NS_HTML, th:NS_HTML,
+       thead:NS_HTML, title:NS_HTML, tr:NS_HTML, track:NS_HTML, ul:NS_HTML,
+       wbr:NS_HTML, xmp:NS_HTML,
+
+       # MathML:
+       mi:NS_MATHML, mo:NS_MATHML, mn:NS_MATHML, ms:NS_MATHML, mtext:NS_MATHML,
+       'annotation-xml':NS_MATHML,
+
+       # SVG:
+       foreignObject:NS_SVG, desc:NS_SVG, title:NS_SVG
+}
+
+formatting_elements = {
+        a: true, b: true, big: true, code: true, em: true, font: true, i: true,
+        nobr: true, s: true, small: true, strike: true, strong: true, tt: true,
+        u: true
+}
+
+mathml_text_integration = {
+       mi: NS_MATHML, mo: NS_MATHML, mn: NS_MATHML, ms: NS_MATHML, mtext: NS_MATHML
+}
+is_mathml_text_integration_point = (el) ->
+       return mathml_text_integration[el.name] is el.namespace
+is_html_integration = (el) -> # DON'T PASS A TOKEN
+       if el.namespace is NS_MATHML
+               if el.name is 'annotation-xml'
+                       if el.attrs.encoding?
+                               if el.attrs.encoding.toLowerCase() is 'text/html'
+                                       return true
+                               if el.attrs.encoding.toLowerCase() is 'application/xhtml+xml'
+                                       return true
+               return false
+       if el.namespace is NS_SVG
+               if el.name is 'foreignObject' or el.name is 'desc' or el.name is 'title'
+                       return true
+       return false
+
+h_tags = {
+       h1:NS_HTML, h2:NS_HTML, h3:NS_HTML, h4:NS_HTML, h5:NS_HTML, h6:NS_HTML
+}
+
+foster_parenting_targets = {
+       table: NS_HTML
+       tbody: NS_HTML
+       tfoot: NS_HTML
+       thead: NS_HTML
+       tr: NS_HTML
+}
+
+end_tag_implied = {
+       dd: NS_HTML
+       dt: NS_HTML
+       li: NS_HTML
+       option: NS_HTML
+       optgroup: NS_HTML
+       p: NS_HTML
+       rb: NS_HTML
+       rp: NS_HTML
+       rt: NS_HTML
+       rtc: NS_HTML
+}
+
+el_is_special = (e) ->
+       return special_elements[e.name] is e.namespace
+
+adp_els = { address: NS_HTML, div: NS_HTML, p: NS_HTML }
+el_is_special_not_adp = (el) ->
+       return special_elements[el.name] is el.namespace and adp_els[el.name] isnt el.namespace
+
+svg_name_fixes = {
+       altglyph: 'altGlyph'
+       altglyphdef: 'altGlyphDef'
+       altglyphitem: 'altGlyphItem'
+       animatecolor: 'animateColor'
+       animatemotion: 'animateMotion'
+       animatetransform: 'animateTransform'
+       clippath: 'clipPath'
+       feblend: 'feBlend'
+       fecolormatrix: 'feColorMatrix'
+       fecomponenttransfer: 'feComponentTransfer'
+       fecomposite: 'feComposite'
+       feconvolvematrix: 'feConvolveMatrix'
+       fediffuselighting: 'feDiffuseLighting'
+       fedisplacementmap: 'feDisplacementMap'
+       fedistantlight: 'feDistantLight'
+       fedropshadow: 'feDropShadow'
+       feflood: 'feFlood'
+       fefunca: 'feFuncA'
+       fefuncb: 'feFuncB'
+       fefuncg: 'feFuncG'
+       fefuncr: 'feFuncR'
+       fegaussianblur: 'feGaussianBlur'
+       feimage: 'feImage'
+       femerge: 'feMerge'
+       femergenode: 'feMergeNode'
+       femorphology: 'feMorphology'
+       feoffset: 'feOffset'
+       fepointlight: 'fePointLight'
+       fespecularlighting: 'feSpecularLighting'
+       fespotlight: 'feSpotLight'
+       fetile: 'feTile'
+       feturbulence: 'feTurbulence'
+       foreignobject: 'foreignObject'
+       glyphref: 'glyphRef'
+       lineargradient: 'linearGradient'
+       radialgradient: 'radialGradient'
+       textpath: 'textPath'
+}
+svg_attribute_fixes = {
+       attributename: 'attributeName'
+       attributetype: 'attributeType'
+       basefrequency: 'baseFrequency'
+       baseprofile: 'baseProfile'
+       calcmode: 'calcMode'
+       clippathunits: 'clipPathUnits'
+       contentscripttype: 'contentScriptType'
+       contentstyletype: 'contentStyleType'
+       diffuseconstant: 'diffuseConstant'
+       edgemode: 'edgeMode'
+       externalresourcesrequired: 'externalResourcesRequired'
+       filterres: 'filterRes'
+       filterunits: 'filterUnits'
+       glyphref: 'glyphRef'
+       gradienttransform: 'gradientTransform'
+       gradientunits: 'gradientUnits'
+       kernelmatrix: 'kernelMatrix'
+       kernelunitlength: 'kernelUnitLength'
+       keypoints: 'keyPoints'
+       keysplines: 'keySplines'
+       keytimes: 'keyTimes'
+       lengthadjust: 'lengthAdjust'
+       limitingconeangle: 'limitingConeAngle'
+       markerheight: 'markerHeight'
+       markerunits: 'markerUnits'
+       markerwidth: 'markerWidth'
+       maskcontentunits: 'maskContentUnits'
+       maskunits: 'maskUnits'
+       numoctaves: 'numOctaves'
+       pathlength: 'pathLength'
+       patterncontentunits: 'patternContentUnits'
+       patterntransform: 'patternTransform'
+       patternunits: 'patternUnits'
+       pointsatx: 'pointsAtX'
+       pointsaty: 'pointsAtY'
+       pointsatz: 'pointsAtZ'
+       preservealpha: 'preserveAlpha'
+       preserveaspectratio: 'preserveAspectRatio'
+       primitiveunits: 'primitiveUnits'
+       refx: 'refX'
+       refy: 'refY'
+       repeatcount: 'repeatCount'
+       repeatdur: 'repeatDur'
+       requiredextensions: 'requiredExtensions'
+       requiredfeatures: 'requiredFeatures'
+       specularconstant: 'specularConstant'
+       specularexponent: 'specularExponent'
+       spreadmethod: 'spreadMethod'
+       startoffset: 'startOffset'
+       stddeviation: 'stdDeviation'
+       stitchtiles: 'stitchTiles'
+       surfacescale: 'surfaceScale'
+       systemlanguage: 'systemLanguage'
+       tablevalues: 'tableValues'
+       targetx: 'targetX'
+       targety: 'targetY'
+       textlength: 'textLength'
+       viewbox: 'viewBox'
+       viewtarget: 'viewTarget'
+       xchannelselector: 'xChannelSelector'
+       ychannelselector: 'yChannelSelector'
+       zoomandpan: 'zoomAndPan'
+}
+adjust_mathml_attributes = (t) ->
+       for a in t.attrs_a
+               if a[0] is 'definitionurl'
+                       a[0] = 'definitionURL'
+       return
+adjust_svg_attributes = (t) ->
+       for a in t.attrs_a
+               if svg_attribute_fixes[a[0]]?
+                       a[0] = svg_attribute_fixes[a[0]]
+       return
+adjust_foreign_attributes = (t) ->
+       # fixfull
+       return
 
 # decode_named_char_ref()
 #
@@ -150,34 +553,2443 @@ decode_named_char_ref = (txt) ->
        return null if decoded is txt
        return g_dncr.cache[txt] = decoded
 
-parse_html = (txt) ->
-       cur = 0 # index of next char in txt to be parsed
-       # declare tree and tokenizer variables so they're in scope below
-       tree = null
-       tree_append_point = null
-       tree_state = null
+parse_html = (args) ->
+       txt = null
+       cur = null # index of next char in txt to be parsed
+       # declare doc and tokenizer variables so they're in scope below
+       doc = null
+       open_els = null # stack of open elements
+       afe = null # active formatting elements
+       template_ins_modes = null
+       ins_mode = null
+       original_ins_mode = null
        tok_state = null
-       tok_cur = null # partially parsed tag
+       tok_cur_tag = null # partially parsed tag
+       flag_scripting = null
+       flag_frameset_ok = null
+       flag_parsing = null
+       flag_foster_parenting = null
+       form_element_pointer = null
+       temporary_buffer = null
+       pending_table_character_tokens = null
+       head_element_pointer = null
+       flag_fragment_parsing = null
+       context_element = null
+
+       stop_parsing = ->
+               flag_parsing = false
+
+       parse_error = ->
+               if args.error_cb?
+                       args.error_cb cur
+               else
+                       console.log "Parse error at character #{cur} of #{txt.length}"
+
+       afe_push = (new_el) ->
+               matches = 0
+               for el, i in afe
+                       if el.name is new_el.name and el.namespace is new_el.namespace
+                               for k, v of el.attrs
+                                       continue unless new_el.attrs[k] is v
+                               for k, v of new_el.attrs
+                                       continue unless el.attrs[k] is v
+                               matches += 1
+                               if matches is 3
+                                       afe.splice i, 1
+                                       break
+               afe.unshift new_el
+       afe_push_marker = ->
+               afe.unshift new_afe_marker()
+
+       # the functions below impliment the Tree Contstruction algorithm
+       # http://www.w3.org/TR/html5/syntax.html#tree-construction
+
+       # But first... the helpers
+       template_tag_is_open = ->
+               for t in open_els
+                       if t.name is 'template' and t.namespace is NS_HTML
+                               return true
+               return false
+       is_in_scope_x = (tag_name, scope, namespace) ->
+               for t in open_els
+                       if t.name is tag_name and (namespace is null or namespace is t.namespace)
+                               return true
+                       if scope[t.name] is t.namespace
+                               return false
+               return false
+       is_in_scope_x_y = (tag_name, scope, scope2, namespace) ->
+               for t in open_els
+                       if t.name is tag_name and (namespace is null or namespace is t.namespace)
+                               return true
+                       if scope[t.name] is t.namespace
+                               return false
+                       if scope2[t.name] is t.namespace
+                               return false
+               return false
+       standard_scopers = {
+               applet: NS_HTML, caption: NS_HTML, html: NS_HTML, table: NS_HTML,
+               td: NS_HTML, th: NS_HTML, marquee: NS_HTML, object: NS_HTML,
+               template: NS_HTML, mi: NS_MATHML,
+
+               mo: NS_MATHML, mn: NS_MATHML, ms: NS_MATHML, mtext: NS_MATHML,
+               'annotation-xml': NS_MATHML,
+
+               foreignObject: NS_SVG, desc: NS_SVG, title: NS_SVG
+       }
+       button_scopers = button: NS_HTML
+       li_scopers = ol: NS_HTML, ul: NS_HTML
+       table_scopers = html: NS_HTML, table: NS_HTML, template: NS_HTML
+       is_in_scope = (tag_name, namespace = null) ->
+               return is_in_scope_x tag_name, standard_scopers, namespace
+       is_in_button_scope = (tag_name, namespace = null) ->
+               return is_in_scope_x_y tag_name, standard_scopers, button_scopers, namespace
+       is_in_table_scope = (tag_name, namespace = null) ->
+               return is_in_scope_x tag_name, table_scopers, namespace
+       # aka is_in_list_item_scope
+       is_in_li_scope = (tag_name, namespace = null) ->
+               return is_in_scope_x_y tag_name, standard_scopers, li_scopers, namespace
+       is_in_select_scope = (tag_name, namespace = null) ->
+               for t in open_els
+                       if t.name is tag_name and (namespace is null or namespace is t.namespace)
+                               return true
+                       if t.namespace isnt NS_HTML and t.name isnt 'optgroup' and t.name isnt 'option'
+                               return false
+               return false
+       # this checks for a particular element, not by name
+       # this requires a namespace match
+       el_is_in_scope = (needle) ->
+               for el in open_els
+                       if el is needle
+                               return true
+                       if standard_scopers[el.name] is el.namespace
+                               return false
+               return false
+
+       clear_to_table_stopers = {
+               'table': true
+               'template': true
+               'html': true
+       }
+       clear_stack_to_table_context = ->
+               loop
+                       if clear_to_table_stopers[open_els[0].name]?
+                               break
+                       open_els.shift()
+               return
+       clear_to_table_body_stopers = {
+               tbody: NS_HTML
+               tfoot: NS_HTML
+               thead: NS_HTML
+               template: NS_HTML
+               html: NS_HTML
+       }
+       clear_stack_to_table_body_context = ->
+               loop
+                       if clear_to_table_body_stopers[open_els[0].name] is open_els[0].namespace
+                               break
+                       open_els.shift()
+               return
+       clear_to_table_row_stopers = {
+               'tr': true
+               'template': true
+               'html': true
+       }
+       clear_stack_to_table_row_context = ->
+               loop
+                       if clear_to_table_row_stopers[open_els[0].name]?
+                               break
+                       open_els.shift()
+               return
+       clear_afe_to_marker = ->
+               loop
+                       return unless afe.length > 0 # this happens in fragment case, ?spec error
+                       el = afe.shift()
+                       if el.type is TYPE_AFE_MARKER
+                               return
+               return
+
+       # 8.2.3.1 ...
+       # http://www.w3.org/TR/html5/syntax.html#reset-the-insertion-mode-appropriately
+       reset_ins_mode = ->
+               # 1. Let last be false.
+               last = false
+               # 2. Let node be the last node in the stack of open elements.
+               node_i = 0
+               node = open_els[node_i]
+               # 3. Loop: If node is the first node in the stack of open elements,
+               # then set last to true, and, if the parser was originally created as
+               # part of the HTML fragment parsing algorithm (fragment case) set node
+               # to the context element.
+               loop
+                       if node_i is open_els.length - 1
+                               last = true
+                               # fixfull (fragment case)
+
+                       # 4. If node is a select element, run these substeps:
+                       if node.name is 'select' and node.namespace is NS_HTML
+                               # 1. If last is true, jump to the step below labeled done.
+                               unless last
+                                       # 2. Let ancestor be node.
+                                       ancestor_i = node_i
+                                       ancestor = node
+                                       # 3. Loop: If ancestor is the first node in the stack of
+                                       # open elements, jump to the step below labeled done.
+                                       loop
+                                               if ancestor_i is open_els.length - 1
+                                                       break
+                                               # 4. Let ancestor be the node before ancestor in the stack
+                                               # of open elements.
+                                               ancestor_i += 1
+                                               ancestor = open_els[ancestor_i]
+                                               # 5. If ancestor is a template node, jump to the step below
+                                               # labeled done.
+                                               if ancestor.name is 'template' and ancestor.namespace is NS_HTML
+                                                       break
+                                               # 6. If ancestor is a table node, switch the insertion mode
+                                               # to "in select in table" and abort these steps.
+                                               if ancestor.name is 'table' and ancestor.namespace is NS_HTML
+                                                       ins_mode = ins_mode_in_select_in_table
+                                                       return
+                                               # 7. Jump back to the step labeled loop.
+                               # 8. Done: Switch the insertion mode to "in select" and abort
+                               # these steps.
+                               ins_mode = ins_mode_in_select
+                               return
+                       # 5. If node is a td or th element and last is false, then switch
+                       # the insertion mode to "in cell" and abort these steps.
+                       if (node.name is 'td' or node.name is 'th') and node.namespace is NS_HTML and last is false
+                               ins_mode = ins_mode_in_cell
+                               return
+                       # 6. If node is a tr element, then switch the insertion mode to "in
+                       # row" and abort these steps.
+                       if node.name is 'tr' and node.namespace is NS_HTML
+                               ins_mode = ins_mode_in_row
+                               return
+                       # 7. If node is a tbody, thead, or tfoot element, then switch the
+                       # insertion mode to "in table body" and abort these steps.
+                       if (node.name is 'tbody' or node.name is 'thead' or node.name is 'tfoot') and node.namespace is NS_HTML
+                               ins_mode = ins_mode_in_table_body
+                               return
+                       # 8. If node is a caption element, then switch the insertion mode
+                       # to "in caption" and abort these steps.
+                       if node.name is 'caption' and node.namespace is NS_HTML
+                               ins_mode = ins_mode_in_caption
+                               return
+                       # 9. If node is a colgroup element, then switch the insertion mode
+                       # to "in column group" and abort these steps.
+                       if node.name is 'colgroup' and node.namespace is NS_HTML
+                               ins_mode = ins_mode_in_column_group
+                               return
+                       # 10. If node is a table element, then switch the insertion mode to
+                       # "in table" and abort these steps.
+                       if node.name is 'table' and node.namespace is NS_HTML
+                               ins_mode = ins_mode_in_table
+                               return
+                       # 11. If node is a template element, then switch the insertion mode
+                       # to the current template insertion mode and abort these steps.
+                       if node.name is 'template' and node.namespace is NS_HTML
+                               ins_mode = template_ins_modes[0]
+                               return
+                       # 12. If node is a head element and last is true, then switch the
+                       # insertion mode to "in body" ("in body"! not "in head"!) and abort
+                       # these steps. (fragment case)
+                       if node.name is 'head' and node.namespace is NS_HTML and last
+                               ins_mode = ins_mode_in_body
+                               return
+                       # 13. If node is a head element and last is false, then switch the
+                       # insertion mode to "in head" and abort these steps.
+                       if node.name is 'head' and node.namespace is NS_HTML and last is false
+                               ins_mode = ins_mode_in_head
+                               return
+                       # 14. If node is a body element, then switch the insertion mode to
+                       # "in body" and abort these steps.
+                       if node.name is 'body' and node.namespace is NS_HTML
+                               ins_mode = ins_mode_in_body
+                               return
+                       # 15. If node is a frameset element, then switch the insertion mode
+                       # to "in frameset" and abort these steps. (fragment case)
+                       if node.name is 'frameset' and node.namespace is NS_HTML
+                               ins_mode = ins_mode_in_frameset
+                               return
+                       # 16. If node is an html element, run these substeps:
+                       if node.name is 'html' and node.namespace is NS_HTML
+                               # 1. If the head element pointer is null, switch the insertion
+                               # mode to "before head" and abort these steps. (fragment case)
+                               if head_element_pointer is null
+                                       ins_mode = ins_mode_before_head
+                               else
+                                       # 2. Otherwise, the head element pointer is not null,
+                                       # switch the insertion mode to "after head" and abort these
+                                       # steps.
+                                       ins_mode = ins_mode_after_head
+                               return
+                       # 17. If last is true, then switch the insertion mode to "in body"
+                       # and abort these steps. (fragment case)
+                       if last
+                               ins_mode = ins_mode_in_body
+                               return
+                       # 18. Let node now be the node before node in the stack of open
+                       # elements.
+                       node_i += 1
+                       node = open_els[node_i]
+                       # 19. Return to the step labeled loop.
+
+       # 8.2.3.2
+
+       # http://www.w3.org/TR/html5/syntax.html#adjusted-current-node
+       adjusted_current_node = ->
+               if open_els.length is 1 and flag_fragment_parsing
+                       return context_element
+               return open_els[0]
+
+       # http://www.w3.org/TR/html5/syntax.html#reconstruct-the-active-formatting-elements
+       # this implementation is structured (mostly) as described at the link above.
+       # capitalized comments are the "labels" described at the link above.
+       reconstruct_afe = ->
+               return if afe.length is 0
+               if afe[0].type is TYPE_AFE_MARKER or afe[0] in open_els
+                       return
+               # Rewind
+               i = 0
+               loop
+                       if i is afe.length - 1
+                               break
+                       i += 1
+                       if afe[i].type is TYPE_AFE_MARKER or afe[i] in open_els
+                               i -= 1 # Advance
+                               break
+               # Create
+               loop
+                       el = insert_html_element afe[i].token
+                       afe[i] = el
+                       break if i is 0
+                       i -= 1 # Advance
+
+       # http://www.w3.org/TR/html5/syntax.html#adoption-agency-algorithm
+       # adoption agency algorithm
+       # overview here:
+       #   http://www.w3.org/TR/html5/syntax.html#misnested-tags:-b-i-/b-/i
+       #   http://www.w3.org/TR/html5/syntax.html#misnested-tags:-b-p-/b-/p
+       #   http://www.w3.org/TR/html5/syntax.html#unclosed-formatting-elements
+       adoption_agency = (subject) ->
+               debug_log "adoption_agency()"
+               debug_log "tree: #{serialize_els doc.children, false, true}"
+               debug_log "open_els: #{serialize_els open_els, true, true}"
+               debug_log "afe: #{serialize_els afe, true, true}"
+               if open_els[0].name is subject and open_els[0].namespace is NS_HTML
+                       el = open_els[0]
+                       open_els.shift()
+                       # remove it from the list of active formatting elements (if found)
+                       for t, i in afe
+                               if t is el
+                                       afe.splice i, 1
+                                       break
+                       debug_log "aaa: starting off with subject on top of stack, exiting"
+                       return
+               outer = 0
+               loop
+                       if outer >= 8
+                               return
+                       outer += 1
+                       # 5. Let formatting element be the last element in the list of
+                       # active formatting elements that: is between the end of the list
+                       # and the last scope marker in the list, if any, or the start of
+                       # the list otherwise, and  has the tag name subject.
+                       fe = null
+                       for t, fe_of_afe in afe
+                               if t.type is TYPE_AFE_MARKER
+                                       break
+                               if t.name is subject
+                                       fe = t
+                                       break
+                       # If there is no such element, then abort these steps and instead
+                       # act as described in the "any other end tag" entry above.
+                       if fe is null
+                               debug_log "aaa: fe not found in afe"
+                               in_body_any_other_end_tag subject
+                               return
+                       # 6. If formatting element is not in the stack of open elements,
+                       # then this is a parse error; remove the element from the list, and
+                       # abort these steps.
+                       in_open_els = false
+                       for t, fe_of_open_els in open_els
+                               if t is fe
+                                       in_open_els = true
+                                       break
+                       unless in_open_els
+                               debug_log "aaa: fe not found in open_els"
+                               parse_error()
+                               # "remove it from the list" must mean afe, since it's not in open_els
+                               afe.splice fe_of_afe, 1
+                               return
+                       # 7. If formatting element is in the stack of open elements, but
+                       # the element is not in scope, then this is a parse error; abort
+                       # these steps.
+                       unless el_is_in_scope fe
+                               debug_log "aaa: fe not in scope"
+                               parse_error()
+                               return
+                       # 8. If formatting element is not the current node, this is a parse
+                       # error. (But do not abort these steps.)
+                       unless open_els[0] is fe
+                               parse_error()
+                               # continue
+                       # 9. Let furthest block be the topmost node in the stack of open
+                       # elements that is lower in the stack than formatting element, and
+                       # is an element in the special category. There might not be one.
+                       fb = null
+                       fb_of_open_els = null
+                       for t, i in open_els
+                               if t is fe
+                                       break
+                               if el_is_special t
+                                       fb = t
+                                       fb_of_open_els = i
+                                       # and continue, to see if there's one that's more "topmost"
+                       # 10. If there is no furthest block, then the UA must first pop all
+                       # the nodes from the bottom of the stack of open elements, from the
+                       # current node up to and including formatting element, then remove
+                       # formatting element from the list of active formatting elements,
+                       # and finally abort these steps.
+                       if fb is null
+                               debug_log "aaa: no fb"
+                               loop
+                                       t = open_els.shift()
+                                       if t is fe
+                                               afe.splice fe_of_afe, 1
+                                               return
+                       # 11. Let common ancestor be the element immediately above
+                       # formatting element in the stack of open elements.
+                       ca = open_els[fe_of_open_els + 1] # common ancestor
+
+                       node_above = open_els[fb_of_open_els + 1] # next node if node isn't in open_els anymore
+                       # 12. Let a bookmark note the position of formatting element in the list of active formatting elements relative to the elements on either side of it in the list.
+                       bookmark = new_aaa_bookmark()
+                       for t, i in afe
+                               if t is fe
+                                       afe.splice i, 0, bookmark
+                                       break
+                       node = last_node = fb
+                       inner = 0
+                       loop
+                               inner += 1
+                               # 3. Let node be the element immediately above node in the
+                               # stack of open elements, or if node is no longer in the stack
+                               # of open elements (e.g. because it got removed by this
+                               # algorithm), the element that was immediately above node in
+                               # the stack of open elements before node was removed.
+                               node_next = null
+                               for t, i in open_els
+                                       if t is node
+                                               node_next = open_els[i + 1]
+                                               break
+                               node = node_next ? node_above
+                               debug_log "inner loop #{inner}"
+                               debug_log "tree: #{serialize_els doc.children, false, true}"
+                               debug_log "open_els: #{serialize_els open_els, true, true}"
+                               debug_log "afe: #{serialize_els afe, true, true}"
+                               debug_log "ca: #{ca.name}##{ca.id} children: #{serialize_els ca.children, true, true}"
+                               debug_log "fe: #{fe.name}##{fe.id} children: #{serialize_els fe.children, true, true}"
+                               debug_log "fb: #{fb.name}##{fb.id} children: #{serialize_els fb.children, true, true}"
+                               debug_log "node: #{node.serialize true, true}"
+                               # TODO make sure node_above gets re-set if/when node is removed from open_els
+
+                               # 4. If node is formatting element, then go to the next step in
+                               # the overall algorithm.
+                               if node is fe
+                                       break
+                               debug_log "the meat"
+                               # 5. If inner loop counter is greater than three and node is in
+                               # the list of active formatting elements, then remove node from
+                               # the list of active formatting elements.
+                               node_in_afe = false
+                               for t, i in afe
+                                       if t is node
+                                               if inner > 3
+                                                       afe.splice i, 1
+                                                       debug_log "max out inner"
+                                               else
+                                                       node_in_afe = true
+                                                       debug_log "in afe"
+                                               break
+                               # 6. If node is not in the list of active formatting elements,
+                               # then remove node from the stack of open elements and then go
+                               # back to the step labeled inner loop.
+                               unless node_in_afe
+                                       debug_log "not in afe"
+                                       for t, i in open_els
+                                               if t is node
+                                                       node_above = open_els[i + 1]
+                                                       open_els.splice i, 1
+                                                       break
+                                       continue
+                               debug_log "the bones"
+                               # 7. create an element for the token for which the element node
+                               # was created, in the HTML namespace, with common ancestor as
+                               # the intended parent; replace the entry for node in the list
+                               # of active formatting elements with an entry for the new
+                               # element, replace the entry for node in the stack of open
+                               # elements with an entry for the new element, and let node be
+                               # the new element.
+                               new_node = token_to_element node.token, NS_HTML, ca
+                               for t, i in afe
+                                       if t is node
+                                               afe[i] = new_node
+                                               debug_log "replaced in afe"
+                                               break
+                               for t, i in open_els
+                                       if t is node
+                                               node_above = open_els[i + 1]
+                                               open_els[i] = new_node
+                                               debug_log "replaced in open_els"
+                                               break
+                               node = new_node
+                               # 8. If last node is furthest block, then move the
+                               # aforementioned bookmark to be immediately after the new node
+                               # in the list of active formatting elements.
+                               if last_node is fb
+                                       for t, i in afe
+                                               if t is bookmark
+                                                       afe.splice i, 1
+                                                       debug_log "removed bookmark"
+                                                       break
+                                       for t, i in afe
+                                               if t is node
+                                                       # "after" means lower
+                                                       afe.splice i, 0, bookmark # "after as <-
+                                                       debug_log "placed bookmark after node"
+                                                       debug_log "node: #{node.id} afe: #{serialize_els afe, true, true}"
+                                                       break
+                               # 9. Insert last node into node, first removing it from its
+                               # previous parent node if any.
+                               if last_node.parent?
+                                       debug_log "last_node has parent"
+                                       for c, i in last_node.parent.children
+                                               if c is last_node
+                                                       debug_log "removing last_node from parent"
+                                                       last_node.parent.children.splice i, 1
+                                                       break
+                               node.children.push last_node
+                               last_node.parent = node
+                               # 10. Let last node be node.
+                               last_node = node
+                               debug_log "at last"
+                               # 11. Return to the step labeled inner loop.
+                       # 14. Insert whatever last node ended up being in the previous step
+                       # at the appropriate place for inserting a node, but using common
+                       # ancestor as the override target.
+
+                       # In the case where fe is immediately followed by fb:
+                       #   * inner loop exits out early (node==fe)
+                       #   * last_node is fb
+                       #   * last_node is still in the tree (not a duplicate)
+                       if last_node.parent?
+                               debug_log "FEFIRST? last_node has parent"
+                               for c, i in last_node.parent.children
+                                       if c is last_node
+                                               debug_log "removing last_node from parent"
+                                               last_node.parent.children.splice i, 1
+                                               break
+
+                       debug_log "after aaa inner loop"
+                       debug_log "ca: #{ca.name}##{ca.id} children: #{serialize_els ca.children, true, true}"
+                       debug_log "fe: #{fe.name}##{fe.id} children: #{serialize_els fe.children, true, true}"
+                       debug_log "fb: #{fb.name}##{fb.id} children: #{serialize_els fb.children, true, true}"
+                       debug_log "last_node: #{last_node.name}##{last_node.id} children: #{serialize_els last_node.children, true, true}"
+                       debug_log "tree: #{serialize_els doc.children, false, true}"
+
+                       debug_log "insert"
+
+
+                       # can't use standard insert token thing, because it's already in
+                       # open_els and must stay at it's current position in open_els
+                       dest = adjusted_insertion_location ca
+                       dest[0].children.splice dest[1], 0, last_node
+                       last_node.parent = dest[0]
+
+
+                       debug_log "ca: #{ca.name}##{ca.id} children: #{serialize_els ca.children, true, true}"
+                       debug_log "fe: #{fe.name}##{fe.id} children: #{serialize_els fe.children, true, true}"
+                       debug_log "fb: #{fb.name}##{fb.id} children: #{serialize_els fb.children, true, true}"
+                       debug_log "last_node: #{last_node.name}##{last_node.id} children: #{serialize_els last_node.children, true, true}"
+                       debug_log "tree: #{serialize_els doc.children, false, true}"
+
+                       # 15. Create an element for the token for which formatting element
+                       # was created, in the HTML namespace, with furthest block as the
+                       # intended parent.
+                       new_element = token_to_element fe.token, NS_HTML, fb
+                       # 16. Take all of the child nodes of furthest block and append them
+                       # to the element created in the last step.
+                       while fb.children.length
+                               t = fb.children.shift()
+                               t.parent = new_element
+                               new_element.children.push t
+                       # 17. Append that new element to furthest block.
+                       new_element.parent = fb
+                       fb.children.push new_element
+                       # 18. Remove formatting element from the list of active formatting
+                       # elements, and insert the new element into the list of active
+                       # formatting elements at the position of the aforementioned
+                       # bookmark.
+                       for t, i in afe
+                               if t is fe
+                                       afe.splice i, 1
+                                       break
+                       for t, i in afe
+                               if t is bookmark
+                                       afe[i] = new_element
+                                       break
+                       # 19. Remove formatting element from the stack of open elements,
+                       # and insert the new element into the stack of open elements
+                       # immediately below the position of furthest block in that stack.
+                       for t, i in open_els
+                               if t is fe
+                                       open_els.splice i, 1
+                                       break
+                       for t, i in open_els
+                               if t is fb
+                                       open_els.splice i, 0, new_element
+                                       break
+                       # 20. Jump back to the step labeled outer loop.
+                       debug_log "done wrapping fb's children. new_element: #{new_element.name}##{new_element.id}"
+                       debug_log "tree: #{serialize_els doc.children, false, true}"
+                       debug_log "open_els: #{serialize_els open_els, true, true}"
+                       debug_log "afe: #{serialize_els afe, true, true}"
+               debug_log "AAA DONE"
+
+       # http://www.w3.org/TR/html5/syntax.html#close-a-p-element
+       close_p_element = ->
+               generate_implied_end_tags 'p' # arg is exception
+               unless open_els[0].name is 'p' and open_els[0].namespace is NS_HTML
+                       parse_error()
+               while open_els.length > 1 # just in case
+                       el = open_els.shift()
+                       if el.name is 'p' and el.namespace is NS_HTML
+                               return
+       close_p_if_in_button_scope = ->
+               if is_in_button_scope 'p', NS_HTML
+                       close_p_element()
+
+       # http://www.w3.org/TR/html5/syntax.html#insert-a-character
+       # aka insert_a_character = (t) ->
+       insert_character = (t) ->
+               dest = adjusted_insertion_location()
+               # fixfull check for Document node
+               if dest[1] > 0
+                       prev = dest[0].children[dest[1] - 1]
+                       if prev.type is TYPE_TEXT
+                               prev.text += t.text
+                               return
+               dest[0].children.splice dest[1], 0, t
+
+
+       # 8.2.5 http://www.w3.org/TR/html5/syntax.html#tree-construction
+       process_token = (t) ->
+               acn = adjusted_current_node()
+               unless acn?
+                       ins_mode t
+                       return
+               if acn.namespace is NS_HTML
+                       ins_mode t
+                       return
+               if is_mathml_text_integration_point(acn)
+                       if t.type is TYPE_START_TAG and (t.name is 'mglyph' or t.name is 'malignmark')
+                               ins_mode t
+                               return
+                       if t.type is TYPE_TEXT
+                               ins_mode t
+                               return
+               if acn.namespace is NS_MATHML and acn.name is 'annotation-xml' and t.type is TYPE_START_TAG and t.name is 'svg'
+                       ins_mode t
+                       return
+               if is_html_integration acn
+                       if t.type is TYPE_START_TAG or t.type is TYPE_TEXT
+                               ins_mode t
+                               return
+               if t.type is TYPE_EOF
+                       ins_mode t
+                       return
+               in_foreign_content t
+               return
+
+       # 8.2.5.1
+       # http://www.w3.org/TR/html5/syntax.html#creating-and-inserting-nodes
+       # http://www.w3.org/TR/html5/syntax.html#appropriate-place-for-inserting-a-node
+       adjusted_insertion_location = (override_target = null) ->
+               # 1. If there was an override target specified, then let target be the
+               # override target.
+               if override_target?
+                       target = override_target
+               else # Otherwise, let target be the current node.
+                       target = open_els[0]
+               # 2. Determine the adjusted insertion location using the first matching
+               # steps from the following list:
+               #
+               # If foster parenting is enabled and target is a table, tbody, tfoot,
+               # thead, or tr element Foster parenting happens when content is
+               # misnested in tables.
+               if flag_foster_parenting and foster_parenting_targets[target.name] is target.namespace
+                       loop # once. this is here so we can ``break`` to "abort these substeps"
+                               # 1. Let last template be the last template element in the
+                               # stack of open elements, if any.
+                               last_template = null
+                               last_template_i = null
+                               for el, i in open_els
+                                       if el.name is 'template' and el.namespace is NS_HTML
+                                               last_template = el
+                                               last_template_i = i
+                                               break
+                               # 2. Let last table be the last table element in the stack of
+                               # open elements, if any.
+                               last_table = null
+                               last_table_i
+                               for el, i in open_els
+                                       if el.name is 'table' and el.namespace is NS_HTML
+                                               last_table = el
+                                               last_table_i = i
+                                               break
+                               # 3. If there is a last template and either there is no last
+                               # table, or there is one, but last template is lower (more
+                               # recently added) than last table in the stack of open
+                               # elements, then: let adjusted insertion location be inside
+                               # last template's template contents, after its last child (if
+                               # any), and abort these substeps.
+                               if last_template and (last_table is null or last_template_i < last_table_i)
+                                       target = last_template # fixfull should be it's contents
+                                       target_i = target.children.length
+                                       break
+                               # 4. If there is no last table, then let adjusted insertion
+                               # location be inside the first element in the stack of open
+                               # elements (the html element), after its last child (if any),
+                               # and abort these substeps. (fragment case)
+                               if last_table is null
+                                       # this is odd
+                                       target = open_els[open_els.length - 1]
+                                       target_i = target.children.length
+                                       break
+                               # 5. If last table has a parent element, then let adjusted
+                               # insertion location be inside last table's parent element,
+                               # immediately before last table, and abort these substeps.
+                               if last_table.parent?
+                                       for c, i in last_table.parent.children
+                                               if c is last_table
+                                                       target = last_table.parent
+                                                       target_i = i
+                                                       break
+                                       break
+                               # 6. Let previous element be the element immediately above last
+                               # table in the stack of open elements.
+                               #
+                               # huh? how could it not have a parent?
+                               previous_element = open_els[last_table_i + 1]
+                               # 7. Let adjusted insertion location be inside previous
+                               # element, after its last child (if any).
+                               target = previous_element
+                               target_i = target.children.length
+                               # Note: These steps are involved in part because it's possible
+                               # for elements, the table element in this case in particular,
+                               # to have been moved by a script around in the DOM, or indeed
+                               # removed from the DOM entirely, after the element was inserted
+                               # by the parser.
+                               break # don't really loop
+               else
+                       # Otherwise Let adjusted insertion location be inside target, after
+                       # its last child (if any).
+                       target_i = target.children.length
+
+               # 3. If the adjusted insertion location is inside a template element,
+               # let it instead be inside the template element's template contents,
+               # after its last child (if any).
+               # fixfull (template)
+
+               # 4. Return the adjusted insertion location.
+               return [target, target_i]
+
+       # http://www.w3.org/TR/html5/syntax.html#create-an-element-for-the-token
+       # aka create_an_element_for_token
+       token_to_element = (t, namespace, intended_parent) ->
+               # convert attributes into a hash
+               attrs = {}
+               for a in t.attrs_a
+                       attrs[a[0]] = a[1] # TODO check what to do with dupilcate attrs
+               el = new Node TYPE_TAG, name: t.name, namespace: namespace, attrs: attrs, token: t
+
+               # TODO 2. If the newly created element has an xmlns attribute in the
+               # XMLNS namespace whose value is not exactly the same as the element's
+               # namespace, that is a parse error. Similarly, if the newly created
+               # element has an xmlns:xlink attribute in the XMLNS namespace whose
+               # value is not the XLink Namespace, that is a parse error.
+
+               # fixfull: the spec says stuff about form pointers and ownerDocument
+
+               return el
+
+       # http://www.w3.org/TR/html5/syntax.html#insert-a-foreign-element
+       insert_foreign_element = (token, namespace) ->
+               ail = adjusted_insertion_location()
+               ail_el = ail[0]
+               ail_i = ail[1]
+               el = token_to_element token, namespace, ail_el
+               # TODO skip this next step if it's broken (eg ail_el is document with child already)
+               el.parent = ail_el
+               ail_el.children.splice ail_i, 0, el
+               open_els.unshift el
+               return el
+       # http://www.w3.org/TR/html5/syntax.html#insert-an-html-element
+       insert_html_element = (token) ->
+               insert_foreign_element token, NS_HTML
+
+       # http://www.w3.org/TR/html5/syntax.html#insert-a-comment
+       # position should be [node, index_within_children]
+       insert_comment = (t, position = null) ->
+               position ?= adjusted_insertion_location()
+               position[0].children.splice position[1], 0, t
+
+       # 8.2.5.2
+       # http://www.w3.org/TR/html5/syntax.html#generic-raw-text-element-parsing-algorithm
+       parse_generic_raw_text = (t) ->
+               insert_html_element t
+               tok_state = tok_state_rawtext
+               original_ins_mode = ins_mode
+               ins_mode = ins_mode_text
+       parse_generic_rcdata_text = (t) ->
+               insert_html_element t
+               tok_state = tok_state_rcdata
+               original_ins_mode = ins_mode
+               ins_mode = ins_mode_text
+
+       # 8.2.5.3 http://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags
+       # http://www.w3.org/TR/html5/syntax.html#generate-implied-end-tags
+       generate_implied_end_tags = (except = null) ->
+               while end_tag_implied[open_els[0].name] is open_els[0].namespace and open_els[0].name isnt except
+                       open_els.shift()
+
+       # 8.2.5.4 The rules for parsing tokens in HTML content
+       # http://www.w3.org/TR/html5/syntax.html#parsing-main-inhtml
+
+       # 8.2.5.4.1 The "initial" insertion mode
+       # http://www.w3.org/TR/html5/syntax.html#the-initial-insertion-mode
+       ins_mode_initial = (t) ->
+               if is_space_tok t
+                       return
+               if t.type is TYPE_COMMENT
+                       # ?fixfull
+                       doc.children.push t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       # FIXME check identifiers, set quirks, etc
+                       # fixfull
+                       doc.children.push t
+                       ins_mode = ins_mode_before_html
+                       return
+               # Anything else
+               #fixfull (iframe, quirks)
+               ins_mode = ins_mode_before_html
+               process_token t
+               return
+
+       # 8.2.5.4.2 http://www.w3.org/TR/html5/syntax.html#the-before-html-insertion-mode
+       ins_mode_before_html = (t) ->
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_COMMENT
+                       doc.children.push t
+                       return
+               if is_space_tok t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       el = token_to_element t, NS_HTML, doc
+                       doc.children.push el
+                       open_els.unshift(el)
+                       # fixfull (big paragraph in spec about manifest, fragment, urls, etc)
+                       ins_mode = ins_mode_before_head
+                       return
+               if t.type is TYPE_END_TAG
+                       if t.name is 'head' or t.name is 'body' or t.name is 'html' or t.name is 'br'
+                               # fall through to "anything else"
+                       else
+                               parse_error()
+                               return
+               # Anything else
+               html_tok = new_open_tag 'html'
+               el = token_to_element html_tok, NS_HTML, doc
+               doc.children.push el
+               open_els.unshift el
+               # ?fixfull browsing context
+               ins_mode = ins_mode_before_head
+               process_token t
+               return
+
+       # 8.2.5.4.3 http://www.w3.org/TR/html5/syntax.html#the-before-head-insertion-mode
+       ins_mode_before_head = (t) ->
+               if is_space_tok t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'head'
+                       el = insert_html_element t
+                       head_element_pointer = el
+                       ins_mode = ins_mode_in_head
+                       return
+               if t.type is TYPE_END_TAG
+                       if t.name is 'head' or t.name is 'body' or t.name is 'html' or t.name is 'br'
+                               # fall through to Anything else below
+                       else
+                               parse_error()
+                               return
+               # Anything else
+               head_tok = new_open_tag 'head'
+               el = insert_html_element head_tok
+               head_element_pointer = el
+               ins_mode = ins_mode_in_head
+               process_token t
+
+       # 8.2.5.4.4 http://www.w3.org/TR/html5/syntax.html#parsing-main-inhead
+       ins_mode_in_head_else = (t) -> # factored out for same-as-spec flow control
+               open_els.shift() # spec says this will be a 'head' node
+               ins_mode = ins_mode_after_head
+               process_token t
+       ins_mode_in_head = (t) ->
+               if t.type is TYPE_TEXT and (t.text is "\t" or t.text is "\n" or t.text is "\u000c" or t.text is ' ')
+                       insert_character t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'base' or t.name is 'basefont' or t.name is 'bgsound' or t.name is 'link')
+                       el = insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'meta'
+                       el = insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       # fixfull encoding stuff
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'title'
+                       parse_generic_rcdata_text t
+                       return
+               if t.type is TYPE_START_TAG and ((t.name is 'noscript' and flag_scripting) or t.name is 'noframes' or t.name is 'style')
+                       parse_generic_raw_text t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'noscript' and flag_scripting is false
+                       insert_html_element t
+                       ins_mode = ins_mode_in_head_noscript
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'script'
+                       ail = adjusted_insertion_location()
+                       el = token_to_element t, NS_HTML, ail
+                       el.flag 'parser-inserted', true
+                       # fixfull frament case
+                       ail[0].children.splice ail[1], 0, el
+                       open_els.unshift el
+                       tok_state = tok_state_script_data
+                       original_ins_mode = ins_mode # make sure orig... is defined
+                       ins_mode = ins_mode_text
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'head'
+                       open_els.shift() # will be a head element... spec says so
+                       ins_mode = ins_mode_after_head
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'body' or t.name is 'html' or t.name is 'br')
+                       ins_mode_in_head_else t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'template'
+                       insert_html_element t
+                       afe_push_marker()
+                       flag_frameset_ok = false
+                       ins_mode = ins_mode_in_template
+                       template_ins_modes.unshift ins_mode_in_template
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'template'
+                       if template_tag_is_open()
+                               generate_implied_end_tags
+                               if open_els[0].name isnt 'template'
+                                       parse_error()
+                               loop
+                                       el = open_els.shift()
+                                       if el.name is 'template' and el.namespace is NS_HTML
+                                               break
+                               clear_afe_to_marker()
+                               template_ins_modes.shift()
+                               reset_ins_mode()
+                       else
+                               parse_error()
+                       return
+               if (t.type is TYPE_START_TAG and t.name is 'head') or t.type is TYPE_END_TAG
+                       parse_error()
+                       return
+               ins_mode_in_head_else t
 
+       # 8.2.5.4.5 http://www.w3.org/TR/html5/syntax.html#parsing-main-inheadnoscript
+       ins_mode_in_head_noscript_else = (t) ->
+               parse_error()
+               open_els.shift()
+               ins_mode = ins_mode_in_head
+               process_token t
+       ins_mode_in_head_noscript = (t) ->
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'noscript'
+                       open_els.shift()
+                       ins_mode = ins_mode_in_head
+                       return
+               if is_space_tok(t) or t.type is TYPE_COMMENT or (t.type is TYPE_START_TAG and (t.name is 'basefont' or t.name is 'bgsound' or t.name is 'link' or t.name is 'meta' or t.name is 'noframes' or t.name is 'style'))
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'br'
+                       ins_mode_in_head_noscript_else t
+                       return
+               if (t.type is TYPE_START_TAG and (t.name is 'head' or t.name is 'noscript')) or t.type is TYPE_END_TAG
+                       parse_error()
+                       return
+               # Anything else
+               ins_mode_in_head_noscript_else t
+               return
+
+
+
+       # 8.2.5.4.6 http://www.w3.org/TR/html5/syntax.html#the-after-head-insertion-mode
+       ins_mode_after_head_else = (t) ->
+               body_tok = new_open_tag 'body'
+               insert_html_element body_tok
+               ins_mode = ins_mode_in_body
+               process_token t
+               return
+       ins_mode_after_head = (t) ->
+               if is_space_tok t
+                       insert_character t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'body'
+                       insert_html_element t
+                       flag_frameset_ok = false
+                       ins_mode = ins_mode_in_body
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'frameset'
+                       insert_html_element t
+                       ins_mode = ins_mode_in_frameset
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'base' or t.name is 'basefont' or t.name is 'bgsound' or t.name is 'link' or t.name is 'meta' or t.name is 'noframes' or t.name is 'script' or t.name is 'style' or t.name is 'template' or t.name is 'title')
+                       parse_error()
+                       open_els.unshift head_element_pointer
+                       ins_mode_in_head t
+                       for el, i of open_els
+                               if el is head_element_pointer
+                                       open_els.splice i, 1
+                                       return
+                       console.log "warning: 23904 couldn't find head element in open_els"
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'template'
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'body' or t.name is 'html' or t.name is 'br')
+                       ins_mode_after_head_else t
+                       return
+               if (t.type is TYPE_START_TAG and t.name is 'head') or t.type is TYPE_END_TAG
+                       parse_error()
+                       return
+               # Anything else
+               ins_mode_after_head_else t
+
+       # 8.2.5.4.7 http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody
+       in_body_any_other_end_tag = (name) -> # factored out because adoption agency calls it
+               for el, i in open_els
+                       if el.name is name and el.namespace is NS_HTML
+                               generate_implied_end_tags name # arg is exception
+                               parse_error() unless i is 0
+                               while i >= 0
+                                       open_els.shift()
+                                       i -= 1
+                               return
+                       if special_elements[el.name] is el.namespace
+                               parse_error()
+                               return
+               return
+       ins_mode_in_body = (t) ->
+               if t.type is TYPE_TEXT and t.text is "\u0000"
+                       parse_error()
+                       return
+               if is_space_tok t
+                       reconstruct_afe()
+                       insert_character t
+                       return
+               if t.type is TYPE_TEXT
+                       reconstruct_afe()
+                       insert_character t
+                       flag_frameset_ok = false
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       parse_error()
+                       return if template_tag_is_open()
+                       root_attrs = open_els[open_els.length - 1].attrs
+                       for a of t.attrs_a
+                               root_attrs[a[0]] = a[1] unless root_attrs[a[0]]?
+                       return
+
+               if (t.type is TYPE_START_TAG and (t.name is 'base' or t.name is 'basefont' or t.name is 'bgsound' or t.name is 'link' or t.name is 'meta' or t.name is 'noframes' or t.name is 'script' or t.name is 'style' or t.name is 'template' or t.name is 'title')) or (t.type is TYPE_END_TAG and t.name is 'template')
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'body'
+                       parse_error()
+                       return if open_els.length < 2
+                       second = open_els[open_els.length - 2]
+                       return unless second.namespace is NS_HTML
+                       return unless second.name is 'body'
+                       return if template_tag_is_open()
+                       flag_frameset_ok = false
+                       for a of t.attrs_a
+                               second.attrs[a[0]] = a[1] unless second.attrs[a[0]]?
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'frameset'
+                       parse_error()
+                       return if open_els.length < 2
+                       second_i = open_els.length - 2
+                       second = open_els[second_i]
+                       return unless second.namespace is NS_HTML
+                       return unless second.name is 'body'
+                       if flag_frameset_ok is false
+                               return
+                       if second.parent?
+                               for el, i in second.parent.children
+                                       if el is second
+                                               second.parent.children.splice i, 1
+                                               break
+                       open_els.splice second_i, 1
+                       # pop everything except the "root html element"
+                       while open_els.length > 1
+                               open_els.shift()
+                       insert_html_element t
+                       ins_mode = ins_mode_in_frameset
+                       return
+               if t.type is TYPE_EOF
+                       ok_tags = {
+                               dd:NS_HTML, dt:NS_HTML, li:NS_HTML, p:NS_HTML, tbody:NS_HTML,
+                               td:NS_HTML, tfoot:NS_HTML, th:NS_HTML, thead:NS_HTML,
+                               tr:NS_HTML, body:NS_HTML, html:NS_HTML,
+                       }
+                       for el in open_els
+                               unless ok_tags[t.name] is el.namespace
+                                       parse_error()
+                                       break
+                       if template_ins_modes.length > 0
+                               ins_mode_in_template t
+                       else
+                               stop_parsing()
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'body'
+                       unless is_in_scope 'body', NS_HTML
+                               parse_error()
+                               return
+                       ok_tags = {
+                               dd:NS_HTML, dt:NS_HTML, li:NS_HTML, optgroup:NS_HTML,
+                               option:NS_HTML, p:NS_HTML, rb:NS_HTML, rp:NS_HTML, rt:NS_HTML,
+                               rtc:NS_HTML, tbody:NS_HTML, td:NS_HTML, tfoot:NS_HTML,
+                               th:NS_HTML, thead:NS_HTML, tr:NS_HTML, body:NS_HTML,
+                               html:NS_HTML
+                       }
+                       for el in open_els
+                               unless ok_tags[t.name] is el.namespace
+                                       parse_error()
+                                       break
+                       ins_mode = ins_mode_after_body
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'html'
+                       unless is_in_scope 'body', NS_HTML
+                               parse_error()
+                               return
+                       ok_tags = {
+                               dd:NS_HTML, dt:NS_HTML, li:NS_HTML, optgroup:NS_HTML,
+                               option:NS_HTML, p:NS_HTML, rb:NS_HTML, rp:NS_HTML, rt:NS_HTML,
+                               rtc:NS_HTML, tbody:NS_HTML, td:NS_HTML, tfoot:NS_HTML,
+                               th:NS_HTML, thead:NS_HTML, tr:NS_HTML, body:NS_HTML,
+                               html:NS_HTML
+                       }
+                       for el in open_els
+                               unless ok_tags[t.name] is el.namespace
+                                       parse_error()
+                                       break
+                       ins_mode = ins_mode_after_body
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'address' or t.name is 'article' or t.name is 'aside' or t.name is 'blockquote' or t.name is 'center' or t.name is 'details' or t.name is 'dialog' or t.name is 'dir' or t.name is 'div' or t.name is 'dl' or t.name is 'fieldset' or t.name is 'figcaption' or t.name is 'figure' or t.name is 'footer' or t.name is 'header' or t.name is 'hgroup' or t.name is 'main' or t.name is 'nav' or t.name is 'ol' or t.name is 'p' or t.name is 'section' or t.name is 'summary' or t.name is 'ul')
+                       close_p_if_in_button_scope()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_START_TAG and h_tags[t.name]?
+                       close_p_if_in_button_scope()
+                       if h_tags[open_els[0].name] is open_els[0].namespace
+                               parse_error()
+                               open_els.shift()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'pre' or t.name is 'listing')
+                       close_p_if_in_button_scope()
+                       insert_html_element t
+                       # spec: If the next token is a "LF" (U+000A) character token, then
+                       # ignore that token and move on to the next one. (Newlines at the
+                       # start of pre blocks are ignored as an authoring convenience.)
+                       if txt.charAt(cur) is "\u000a" # FIXME check for crlf?
+                               cur += 1
+                       flag_frameset_ok = false
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'form'
+                       unless form_element_pointer is null or template_tag_is_open()
+                               parse_error()
+                               return
+                       close_p_if_in_button_scope()
+                       el = insert_html_element t
+                       unless template_tag_is_open()
+                               form_element_pointer = el
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'li'
+                       flag_frameset_ok = false
+                       for node in open_els
+                               if node.name is 'li' and node.namespace is NS_HTML
+                                       generate_implied_end_tags 'li' # arg is exception
+                                       if open_els[0].name isnt 'li' or open_els[0].namespace isnt NS_HTML
+                                               parse_error()
+                                       loop
+                                               el = open_els.shift()
+                                               if el.name is 'li' and el.namespace is NS_HTML
+                                                       break
+                                       break
+                               if el_is_special_not_adp node
+                                               break
+                       close_p_if_in_button_scope()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'dd' or t.name is 'dt')
+                       flag_frameset_ok = false
+                       for node in open_els
+                               if node.name is 'dd' and node.namespace is NS_HTML
+                                       generate_implied_end_tags 'dd' # arg is exception
+                                       if open_els[0].name isnt 'dd' or open_els[0].namespace isnt NS_HTML
+                                               parse_error()
+                                       loop
+                                               el = open_els.shift()
+                                               if el.name is 'dd' and el.namespace is NS_HTML
+                                                       break
+                                       break
+                               if node.name is 'dt' and node.namespace is NS_HTML
+                                       generate_implied_end_tags 'dt' # arg is exception
+                                       if open_els[0].name isnt 'dt' or open_els[0].namespace isnt NS_HTML
+                                               parse_error()
+                                       loop
+                                               el = open_els.shift()
+                                               if el.name is 'dt' and el.namespace is NS_HTML
+                                                       break
+                                       break
+                               if el_is_special_not_adp node
+                                       break
+                       close_p_if_in_button_scope()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'plaintext'
+                       close_p_if_in_button_scope()
+                       insert_html_element t
+                       tok_state = tok_state_plaintext
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'button'
+                       if is_in_scope 'button', NS_HTML
+                               parse_error()
+                               generate_implied_end_tags()
+                               loop
+                                       el = open_els.shift()
+                                       if el.name is 'button' and el.namespace is NS_HTML
+                                               break
+                       reconstruct_afe()
+                       insert_html_element t
+                       flag_frameset_ok = false
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'address' or t.name is 'article' or t.name is 'aside' or t.name is 'blockquote' or t.name is 'button' or t.name is 'center' or t.name is 'details' or t.name is 'dialog' or t.name is 'dir' or t.name is 'div' or t.name is 'dl' or t.name is 'fieldset' or t.name is 'figcaption' or t.name is 'figure' or t.name is 'footer' or t.name is 'header' or t.name is 'hgroup' or t.name is 'listing' or t.name is 'main' or t.name is 'nav' or t.name is 'ol' or t.name is 'pre' or t.name is 'section' or t.name is 'summary' or t.name is 'ul')
+                       unless is_in_scope t.name, NS_HTML
+                               parse_error()
+                               return
+                       generate_implied_end_tags()
+                       unless open_els[0].name is t.name and open_els[0].namespace is NS_HTML
+                               parse_error()
+                       loop
+                               el = open_els.shift()
+                               if el.name is t.name and el.namespace is NS_HTML
+                                       return
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'form'
+                       unless template_tag_is_open()
+                               node = form_element_pointer
+                               form_element_pointer = null
+                               if node is null or not el_is_in_scope node
+                                       parse_error()
+                                       return
+                               generate_implied_end_tags()
+                               if open_els[0] isnt node
+                                       parse_error()
+                               for el, i in open_els
+                                       if el is node
+                                               open_els.splice i, 1
+                                               break
+                       else
+                               unless is_in_scope 'form', NS_HTML
+                                       parse_error()
+                                       return
+                               generate_implied_end_tags()
+                               if open_els[0].name isnt 'form' or open_els[0].namespace isnt NS_HTML
+                                       parse_error()
+                               loop
+                                       el = open_els.shift()
+                                       if el.name is 'form' and el.namespace is NS_HTML
+                                               break
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'p'
+                       unless is_in_button_scope 'p', NS_HTML
+                               parse_error()
+                               insert_html_element new_open_tag 'p'
+                       close_p_element()
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'li'
+                       unless is_in_li_scope 'li', NS_HTML
+                               parse_error()
+                               return
+                       generate_implied_end_tags 'li' # arg is exception
+                       if open_els[0].name isnt 'li' or open_els[0].namespace isnt NS_HTML
+                               parse_error()
+                       loop
+                               el = open_els.shift()
+                               if el.name is 'li' and el.namespace is NS_HTML
+                                       break
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'dd' or t.name is 'dt')
+                       unless is_in_scope t.name, NS_HTML
+                               parse_error()
+                               return
+                       generate_implied_end_tags t.name # arg is exception
+                       if open_els[0].name isnt t.name or open_els[0].namespace isnt NS_HTML
+                               parse_error()
+                       loop
+                               el = open_els.shift()
+                               if el.name is t.name and el.namespace is NS_HTML
+                                       break
+                       return
+               if t.type is TYPE_END_TAG and h_tags[t.name]?
+                       h_in_scope = false
+                       for el in open_els
+                               if h_tags[el.name] is el.namespace
+                                       h_in_scope = true
+                                       break
+                               if standard_scopers[el.name] is el.namespace
+                                       break
+                       unless h_in_scope
+                               parse_error()
+                               return
+                       generate_implied_end_tags()
+                       if open_els[0].name isnt t.name or open_els[0].namespace isnt NS_HTML
+                               parse_error()
+                       loop
+                               el = open_els.shift()
+                               if h_tags[el.name] is el.namespace
+                                       break
+                       return
+               # deep breath!
+               if t.type is TYPE_START_TAG and t.name is 'a'
+                       # If the list of active formatting elements contains an a element
+                       # between the end of the list and the last marker on the list (or
+                       # the start of the list if there is no marker on the list), then
+                       # this is a parse error; run the adoption agency algorithm for the
+                       # tag name "a", then remove that element from the list of active
+                       # formatting elements and the stack of open elements if the
+                       # adoption agency algorithm didn't already remove it (it might not
+                       # have if the element is not in table scope).
+                       found = false
+                       for el in afe
+                               if el.type is TYPE_AFE_MARKER
+                                       break
+                               if el.name is 'a' and el.namespace is NS_HTML
+                                       found = el
+                       if found?
+                               parse_error()
+                               adoption_agency 'a'
+                               for el, i in afe
+                                       if el is found
+                                               afe.splice i, 1
+                               for el, i in open_els
+                                       if el is found
+                                               open_els.splice i, 1
+                       reconstruct_afe()
+                       el = insert_html_element t
+                       afe_push el
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'b' or t.name is 'big' or t.name is 'code' or t.name is 'em' or t.name is 'font' or t.name is 'i' or t.name is 's' or t.name is 'small' or t.name is 'strike' or t.name is 'strong' or t.name is 'tt' or t.name is 'u')
+                       reconstruct_afe()
+                       el = insert_html_element t
+                       afe_push el
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'nobr'
+                       reconstruct_afe()
+                       el = insert_html_element t
+                       afe_push el
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'a' or t.name is 'b' or t.name is 'big' or t.name is 'code' or t.name is 'em' or t.name is 'font' or t.name is 'i' or t.name is 'nobr' or t.name is 's' or t.name is 'small' or t.name is 'strike' or t.name is 'strong' or t.name is 'tt' or t.name is 'u')
+                       adoption_agency t.name
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'applet' or t.name is 'marquee' or t.name is 'object')
+                       reconstruct_afe()
+                       insert_html_element t
+                       afe_push_marker()
+                       flag_frameset_ok = false
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'applet' or t.name is 'marquee' or t.name is 'object')
+                       unless is_in_scope t.name, NS_HTML
+                               parse_error()
+                               return
+                       generate_implied_end_tags()
+                       if open_els[0].name isnt t.name or open_els[0].namespace isnt NS_HTML
+                               parse_error()
+                       loop
+                               el = open_els.shift()
+                               if el.name is t.name and el.namespace is NS_HTML
+                                       break
+                       clear_afe_to_marker()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'table'
+                       close_p_if_in_button_scope() # fixfull quirksmode thing
+                       insert_html_element t
+                       flag_frameset_ok = false
+                       ins_mode = ins_mode_in_table
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'br'
+                       parse_error()
+                       t.type is TYPE_START_TAG
+                       # fall through
+               if t.type is TYPE_START_TAG and (t.name is 'area' or t.name is 'br' or t.name is 'embed' or t.name is 'img' or t.name is 'keygen' or t.name is 'wbr')
+                       reconstruct_afe()
+                       insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       flag_frameset_ok = false
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'input'
+                       reconstruct_afe()
+                       insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       unless is_input_hidden_tok t
+                               flag_frameset_ok = false
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'param' or t.name is 'source' or t.name is 'track')
+                       insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'hr'
+                       close_p_if_in_button_scope()
+                       insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       flag_frameset_ok = false
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'image'
+                       parse_error()
+                       t.name = 'img'
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'isindex'
+                       parse_error()
+                       if template_tag_is_open() is false and form_element_pointer isnt null
+                               return
+                       t.acknowledge_self_closing()
+                       flag_frameset_ok = false
+                       close_p_if_in_button_scope()
+                       el = insert_html_element new_open_tag 'form'
+                       unless template_tag_is_open()
+                               form_element_pointer = el
+                       for a in t.attrs_a
+                               if a[0] is 'action'
+                                       el.attrs['action'] = a[1]
+                                       break
+                       insert_html_element new_open_tag 'hr'
+                       open_els.shift()
+                       reconstruct_afe()
+                       insert_html_element new_open_tag 'label'
+                       # note: this is a little out-of-spec-order so we only have to scan t.attrs_a once
+                       input_el = new_open_tag 'input'
+                       prompt = null
+                       for a in t.attrs_a
+                               if a[0] is 'prompt'
+                                       prompt = a[1]
+                               if a[0] isnt 'name' and a[0] isnt 'action' and a[0] isnt 'prompt'
+                                       input_el.attrs_a.push [a[0], a[1]]
+                       input_el.attrs_a.push ['name', 'isindex']
+                       # fixfull this next bit is in english... internationalize?
+                       prompt ?= "This is a searchable index. Enter search keywords: "
+                       insert_character new_character_token prompt # fixfull split
+                       # TODO submit typo "balue" in spec
+                       insert_html_element input_el
+                       open_els.shift()
+                       # insert_character '' # you can put chars here if promt attr missing
+                       open_els.shift()
+                       insert_html_element new_open_tag 'hr'
+                       open_els.shift()
+                       open_els.shift()
+                       unless template_tag_is_open()
+                               form_element_pointer = null
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'textarea'
+                       insert_html_element t
+                       if txt.charAt(cur) is "\u000a" # FIXME check for crlf?
+                               cur += 1
+                       tok_state = tok_state_rcdata
+                       original_ins_mode = ins_mode
+                       flag_frameset_ok = false
+                       ins_mode = ins_mode_text
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'xmp'
+                       close_p_if_in_button_scope()
+                       reconstruct_afe()
+                       flag_frameset_ok = false
+                       parse_generic_raw_text t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'iframe'
+                       flag_frameset_ok = false
+                       parse_generic_raw_text t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'noembed' or (t.name is 'noscript' and flag_scripting))
+                       parse_generic_raw_text t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'select'
+                       reconstruct_afe()
+                       insert_html_element t
+                       flag_frameset_ok = false
+                       if ins_mode is ins_mode_in_table or ins_mode is ins_mode_in_caption or ins_mode is ins_mode_in_table_body or ins_mode is ins_mode_in_row or ins_mode is ins_mode_in_cell
+                               ins_mode = ins_mode_in_select_in_table
+                       else
+                               ins_mode = ins_mode_in_select
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'optgroup' or t.name is 'option')
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
+                               open_els.shift()
+                       reconstruct_afe()
+                       insert_html_element t
+                       return
+# this comment block implements the W3C spec
+#              if t.type is TYPE_START_TAG and (t.name is 'rb' or t.name is 'rp' or t.name is 'rtc')
+#                      if is_in_scope 'ruby', NS_HTML
+#                              generate_implied_end_tags()
+#                              unless open_els[0].name is 'ruby' and open_els[0].namespace is NS_HTML
+#                                      parse_error()
+#                      insert_html_element t
+#                      return
+#              if t.type is TYPE_START_TAG and t.name is 'rt'
+#                      if is_in_scope 'ruby', NS_HTML
+#                              generate_implied_end_tags 'rtc' # arg is exception
+#                              unless (open_els[0].name is 'ruby' or open_els[0].name is 'rtc') and open_els[0].namespace is NS_HTML
+#                                      parse_error()
+#                      insert_html_element t
+#                      return
+# below implements the WATWG spec https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
+               if t.type is TYPE_START_TAG and (t.name is 'rb' or t.name is 'rtc')
+                       if is_in_scope 'ruby', NS_HTML
+                               generate_implied_end_tags()
+                               unless open_els[0].name is 'ruby' and open_els[0].namespace is NS_HTML
+                                       parse_error()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'rp' or t.name is 'rt')
+                       if is_in_scope 'ruby', NS_HTML
+                               generate_implied_end_tags 'rtc'
+                               unless (open_els[0].name is 'ruby' or open_els[0].name is 'rtc') and open_els[0].namespace is NS_HTML
+                                       parse_error()
+                       insert_html_element t
+                       return
+# end WATWG chunk
+               if t.type is TYPE_START_TAG and t.name is 'math'
+                       reconstruct_afe()
+                       adjust_mathml_attributes t
+                       adjust_foreign_attributes t
+                       insert_foreign_element t, NS_MATHML
+                       if t.flag 'self-closing'
+                               open_els.shift()
+                               t.acknowledge_self_closing()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'svg'
+                       reconstruct_afe()
+                       adjust_svg_attributes t
+                       adjust_foreign_attributes t
+                       insert_foreign_element t, NS_SVG
+                       if t.flag 'self-closing'
+                               open_els.shift()
+                               t.acknowledge_self_closing()
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'frame' or t.name is 'head' or t.name is 'tbody' or t.name is 'td' or t.name is 'tfoot' or t.name is 'th' or t.name is 'thead' or t.name is 'tr')
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG # any other start tag
+                       reconstruct_afe()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_END_TAG # any other end tag
+                       in_body_any_other_end_tag t.name
+                       return
+               return
+
+       # 8.2.5.4.8 http://www.w3.org/TR/html5/syntax.html#parsing-main-incdata
+       ins_mode_text = (t) ->
+               if t.type is TYPE_TEXT
+                       insert_character t
+                       return
+               if t.type is TYPE_EOF
+                       parse_error()
+                       if open_els[0].name is 'script' and open_els[0].namespace is NS_HTML
+                               open_els[0].flag 'already started', true
+                       open_els.shift()
+                       ins_mode = original_ins_mode
+                       process_token t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'script'
+                       open_els.shift()
+                       ins_mode = original_ins_mode
+                       # fixfull the spec seems to assume that I'm going to run the script
+                       # http://www.w3.org/TR/html5/syntax.html#scriptEndTag
+                       return
+               if t.type is TYPE_END_TAG
+                       open_els.shift()
+                       ins_mode = original_ins_mode
+                       return
+               console.log 'warning: end of ins_mode_text reached'
 
        # the functions below implement the tokenizer stats described here:
        # http://www.w3.org/TR/html5/syntax.html#tokenization
 
-       # http://www.w3.org/TR/html5/syntax.html#data-state
+       # 8.2.5.4.9 http://www.w3.org/TR/html5/syntax.html#parsing-main-intable
+       ins_mode_in_table_else = (t) ->
+               parse_error()
+               flag_foster_parenting = true
+               ins_mode_in_body t
+               flag_foster_parenting = false
+               return
+       ins_mode_in_table = (t) ->
+               switch t.type
+                       when TYPE_TEXT
+                               if t.name is 'table' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead' or t.name is 'tr'
+                                       original_ins_mode = ins_mode
+                                       ins_mode = ins_mode_in_table_text
+                                       process_token t
+                               else
+                                       ins_mode_in_table_else t
+                       when TYPE_COMMENT
+                               insert_comment t
+                       when TYPE_DOCTYPE
+                               parse_error()
+                       when TYPE_START_TAG
+                               switch t.name
+                                       when 'caption'
+                                               clear_stack_to_table_context()
+                                               afe_push_marker()
+                                               insert_html_element t
+                                               ins_mode = ins_mode_in_caption
+                                       when 'colgroup'
+                                               clear_stack_to_table_context()
+                                               insert_html_element t
+                                               ins_mode = ins_mode_in_column_group
+                                       when 'col'
+                                               clear_stack_to_table_context()
+                                               insert_html_element new_open_tag 'colgroup'
+                                               ins_mode = ins_mode_in_column_group
+                                               process_token t
+                                       when 'tbody', 'tfoot', 'thead'
+                                               clear_stack_to_table_context()
+                                               insert_html_element t
+                                               ins_mode = ins_mode_in_table_body
+                                       when 'td', 'th', 'tr'
+                                               clear_stack_to_table_context()
+                                               insert_html_element new_open_tag 'tbody'
+                                               ins_mode = ins_mode_in_table_body
+                                               process_token t
+                                       when 'table'
+                                               parse_error()
+                                               if is_in_table_scope 'table', NS_HTML
+                                                       loop
+                                                               el = open_els.shift()
+                                                               if el.name is 'table' and el.namespace is NS_HTML
+                                                                       break
+                                                       reset_ins_mode()
+                                                       process_token t
+                                       when 'style', 'script', 'template'
+                                               ins_mode_in_head t
+                                       when 'input'
+                                               unless is_input_hidden_tok t
+                                                       ins_mode_in_table_else t
+                                               else
+                                                       parse_error()
+                                                       el = insert_html_element t
+                                                       open_els.shift()
+                                                       t.acknowledge_self_closing()
+                                       when 'form'
+                                               parse_error()
+                                               if form_element_pointer?
+                                                       return
+                                               if template_tag_is_open()
+                                                       return
+                                               form_element_pointer = insert_html_element t
+                                               open_els.shift()
+                                       else
+                                               ins_mode_in_table_else t
+                       when TYPE_END_TAG
+                               switch t.name
+                                       when 'table'
+                                               if is_in_table_scope 'table', NS_HTML
+                                                       loop
+                                                               el = open_els.shift()
+                                                               if el.name is 'table' and el.namespace is NS_HTML
+                                                                       break
+                                                       reset_ins_mode()
+                                               else
+                                                       parse_error()
+                                       when 'body', 'caption', 'col', 'colgroup', 'html', 'tbody', 'td', 'tfoot', 'th', 'thead', 'tr'
+                                               parse_error()
+                                       when 'template'
+                                               ins_mode_in_head t
+                                       else
+                                               ins_mode_in_table_else t
+                       when TYPE_EOF
+                               ins_mode_in_body t
+                       else
+                               ins_mode_in_table_else t
+
+
+       # 8.2.5.4.10 http://www.w3.org/TR/html5/syntax.html#parsing-main-intabletext
+       ins_mode_in_table_text = (t) ->
+               if t.type is TYPE_TEXT and t.text is "\u0000"
+                       # huh? I thought the tokenizer didn't emit these
+                       parse_error()
+                       return
+               if t.type is TYPE_TEXT
+                       pending_table_character_tokens.push t
+                       return
+               # Anything else
+               all_space = true
+               for old in pending_table_character_tokens
+                       unless is_space_tok old
+                               all_space = false
+                               break
+               if all_space
+                       for old in pending_table_character_tokens
+                               insert_character old
+               else
+                       for old in pending_table_character_tokens
+                               ins_mode_table_else old
+               pending_table_character_tokens = [] # FIXME test (spec doesn't say this)
+               ins_mode = original_ins_mode
+               process_token t
+
+       # 8.2.5.4.11 http://www.w3.org/TR/html5/syntax.html#parsing-main-incaption
+       ins_mode_in_caption = (t) ->
+               if t.type is TYPE_END_TAG and t.name is 'caption'
+                       if is_in_table_scope 'caption', NS_HTML
+                               generate_implied_end_tags()
+                               if open_els[0].name isnt 'caption'
+                                       parse_error()
+                               loop
+                                       el = open_els.shift()
+                                       if el.name is 'caption' and el.namespace is NS_HTML
+                                               break
+                               clear_afe_to_marker()
+                               ins_mode = ins_mode_in_table
+                       else
+                               parse_error()
+                               # fragment case
+                       return
+               if (t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'td' or t.name is 'tfoot' or t.name is 'th' or t.name is 'thead' or t.name is 'tr')) or t.type is TYPE_END_TAG and t.name is 'table'
+                       parse_error()
+                       if is_in_table_scope 'caption', NS_HTML
+                               loop
+                                       el = open_els.shift()
+                                       if el.name is 'caption' and el.namespace is NS_HTML
+                                               break
+                               clear_afe_to_marker()
+                               ins_mode = ins_mode_in_table
+                               process_token t
+                       # else fragment case
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'body' or t.name is 'col' or t.name is 'colgroup' or t.name is 'html' or t.name is 'tbody' or t.name is 'td' or t.name is 'tfoot' or t.name is 'th' or t.name is 'thead' or t.name is 'tr')
+                       parse_error()
+                       return
+               # Anything else
+               ins_mode_in_body t
+
+       # 8.2.5.4.12 http://www.w3.org/TR/html5/syntax.html#parsing-main-incolgroup
+       ins_mode_in_column_group = (t) ->
+               if is_space_tok t
+                       insert_character t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'col'
+                       el = insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'colgroup'
+                       if open_els[0].name is 'colgroup' and open_els.namespace is NS_HTML
+                               open_els.shift()
+                               ins_mode = ins_mode_in_table
+                       else
+                               parse_error()
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'col'
+                       parse_error()
+                       return
+               if (t.type is TYPE_START_TAG or t.type is TYPE_END_TAG) and t.name is 'template'
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_EOF
+                       ins_mode_in_body t
+                       return
+               # Anything else
+               if open_els[0].name isnt 'colgroup'
+                       parse_error()
+                       return
+               open_els.shift()
+               ins_mode = ins_mode_in_table
+               process_token t
+               return
+
+       # 8.2.5.4.13 http://www.w3.org/TR/html5/syntax.html#parsing-main-intbody
+       ins_mode_in_table_body = (t) ->
+               if t.type is TYPE_START_TAG and t.name is 'tr'
+                       clear_stack_to_table_body_context()
+                       insert_html_element t
+                       ins_mode = ins_mode_in_row
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'th' or t.name is 'td')
+                       parse_error()
+                       clear_stack_to_table_body_context()
+                       insert_html_element new_open_tag 'tr'
+                       ins_mode = ins_mode_in_row
+                       process_token t
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead')
+                       unless is_in_table_scope t.name, NS_HTML
+                               parse_error()
+                               return
+                       clear_stack_to_table_body_context()
+                       open_els.shift()
+                       ins_mode = ins_mode_in_table
+                       return
+               if (t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead')) or (t.type is TYPE_END_TAG and t.name is 'table')
+                       has = false
+                       for el in open_els
+                               if el.namespace is NS_HTML and (el.name is 'tbody' or el.name is 'tfoot' or el.name is 'thead')
+                                       has = true
+                                       break
+                               if table_scopers[el.name] is el.namespace
+                                       break
+                       if !has
+                               parse_error()
+                               return
+                       clear_stack_to_table_body_context()
+                       open_els.shift()
+                       ins_mode = ins_mode_in_table
+                       process_token t
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'body' or t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'html' or t.name is 'td' or t.name is 'th' or t.name is 'tr')
+                       parse_error()
+                       return
+               # Anything else
+               ins_mode_in_table t
+
+       # 8.2.5.4.14 http://www.w3.org/TR/html5/syntax.html#parsing-main-intr
+       ins_mode_in_row = (t) ->
+               if t.type is TYPE_START_TAG and (t.name is 'th' or t.name is 'td')
+                       clear_stack_to_table_row_context()
+                       insert_html_element t
+                       ins_mode = ins_mode_in_cell
+                       afe_push_marker()
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'tr'
+                       if is_in_table_scope 'tr', NS_HTML
+                               clear_stack_to_table_row_context()
+                               open_els.shift()
+                               ins_mode = ins_mode_in_table_body
+                       else
+                               parse_error()
+                       return
+               if (t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead' or t.name is 'tr')) or t.type is TYPE_END_TAG and t.name is 'table'
+                       if is_in_table_scope 'tr', NS_HTML
+                               clear_stack_to_table_row_context()
+                               open_els.shift()
+                               ins_mode = ins_mode_in_table_body
+                               process_token t
+                       else
+                               parse_error()
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead')
+                       if is_in_table_scope t.name, NS_HTML
+                               if is_in_table_scope 'tr', NS_HTML
+                                       clear_stack_to_table_row_context()
+                                       open_els.shift()
+                                       ins_mode = ins_mode_in_table_body
+                                       process_token t
+                       else
+                               parse_error()
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'body' or t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'html' or t.name is 'td' or t.name is 'th')
+                       parse_error()
+                       return
+               # Anything else
+               ins_mode_in_table t
+
+       # http://www.w3.org/TR/html5/syntax.html#close-the-cell
+       close_the_cell = ->
+               generate_implied_end_tags()
+               unless (open_els[0].name is 'td' or open_els[0] is 'th') and open_els[0].namespace is NS_HTML
+                       parse_error()
+               loop
+                       el = open_els.shift()
+                       if el.namespace is NS_HTML and (el.name is 'td' or el.name is 'th')
+                               break
+               clear_afe_to_marker()
+               ins_mode = ins_mode_in_row
+
+       # 8.2.5.4.15 http://www.w3.org/TR/html5/syntax.html#parsing-main-intd
+       ins_mode_in_cell = (t) ->
+               if t.type is TYPE_END_TAG and (t.name is 'td' or t.name is 'th')
+                       if is_in_table_scope t.name, NS_HTML
+                               generate_implied_end_tags()
+                               unless (open_els[0].name is t.name) and open_els[0].namespace is NS_HTML
+                                       parse_error()
+                               loop
+                                       el = open_els.shift()
+                                       if el.name is t.name and el.namespace is NS_HTML
+                                               break
+                               clear_afe_to_marker()
+                               ins_mode = ins_mode_in_row
+                       else
+                               parse_error()
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'td' or t.name is 'tfoot' or t.name is 'th' or t.name is 'thead' or t.name is 'tr')
+                       has = false
+                       for el in open_els
+                               if el.namespace is NS_HTML and (el.name is 'td' or el.name is 'th')
+                                       has = true
+                                       break
+                               if table_scopers[el.name] is el.namespace
+                                       break
+                       if !has
+                               parse_error()
+                               return
+                       close_the_cell()
+                       process_token t
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'body' or t.name is 'caption' or t.name is 'col' or t.name is 'colgroup' or t.name is 'html')
+                       parse_error()
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'table' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead' or t.name is 'tr')
+                       if is_in_table_scope t.name, NS_HTML
+                               close_the_cell()
+                               process_token t
+                       else
+                               parse_error()
+                       return
+               # Anything Else
+               ins_mode_in_body t
+
+       # 8.2.5.4.16 http://www.w3.org/TR/html5/syntax.html#parsing-main-inselect
+       ins_mode_in_select = (t) ->
+               if t.type is TYPE_TEXT and t.text is "\u0000"
+                       parse_error()
+                       return
+               if t.type is TYPE_TEXT
+                       insert_character t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'option'
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
+                               open_els.shift()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'optgroup'
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
+                               open_els.shift()
+                       if open_els[0].name is 'optgroup' and open_els[0].namespace is NS_HTML
+                               open_els.shift()
+                       insert_html_element t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'optgroup'
+                       if open_els[0].name is 'option' and open_els[0].namespace in NS_HTML
+                               if open_els[1].name is 'optgroup' and open_els[0].namespace is NS_HTML
+                                       open_els.shift()
+                       if open_els[0].name is 'optgroup' and open_els[0].namespace is NS_HTML
+                               open_els.shift()
+                       else
+                               parse_error()
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'option'
+                       if open_els[0].name is 'option' and open_els[0].namespace is NS_HTML
+                               open_els.shift()
+                       else
+                               parse_error()
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'select'
+                       if is_in_select_scope 'select', NS_HTML
+                               loop
+                                       el = open_els.shift()
+                                       if el.name is 'select' and el.namespace is NS_HTML
+                                               break
+                               reset_ins_mode()
+                       else
+                               parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'select'
+                       parse_error()
+                       loop
+                               el = open_els.shift()
+                               if el.name is 'select' and el.namespace is NS_HTML
+                                       break
+                       reset_ins_mode()
+                       # spec says that this is the same as </select> but it doesn't say
+                       # to check scope first
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'input' or t.name is 'keygen' or t.name is 'textarea')
+                       parse_error()
+                       if is_in_select_scope 'select', NS_HTML
+                               return
+                       loop
+                               el = open_els.shift()
+                               if el.name is 'select' and el.namespace is NS_HTML
+                                       break
+                       reset_ins_mode()
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'script' or t.name is 'template')
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_EOF
+                       ins_mode_in_body t
+                       return
+               # Anything else
+               parse_error()
+               return
+
+       # 8.2.5.4.17 http://www.w3.org/TR/html5/syntax.html#parsing-main-inselectintable
+       ins_mode_in_select_in_table = (t) ->
+               if t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'table' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead' or t.name is 'tr' or t.name is 'td' or t.name is 'th')
+                       parse_error()
+                       loop
+                               el = open_els.shift()
+                               if el.name is 'select' and el.namespace is NS_HTML
+                                       break
+                       reset_ins_mode()
+                       process_token t
+                       return
+               if t.type is TYPE_END_TAG and (t.name is 'caption' or t.name is 'table' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead' or t.name is 'tr' or t.name is 'td' or t.name is 'th')
+                       parse_error()
+                       unless is_in_table_scope t.name, NS_HTML
+                               return
+                       loop
+                               el = open_els.shift()
+                               if el.name is 'select' and el.namespace is NS_HTML
+                                       break
+                       reset_ins_mode()
+                       process_token t
+                       return
+               # Anything else
+               ins_mode_in_select t
+               return
+
+       # 8.2.5.4.18 http://www.w3.org/TR/html5/syntax.html#parsing-main-intemplate
+       ins_mode_in_template = (t) ->
+               if t.type is TYPE_TEXT or t.type is TYPE_COMMENT or t.type is TYPE_DOCTYPE
+                       ins_mode_in_body t
+                       return
+               if (t.type is TYPE_START_TAG and (t.name is 'base' or t.name is 'basefont' or t.name is 'bgsound' or t.name is 'link' or t.name is 'meta' or t.name is 'noframes' or t.name is 'script' or t.name is 'style' or t.name is 'template' or t.name is 'title')) or (t.type is TYPE_END_TAG and t.name is 'template')
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'caption' or t.name is 'colgroup' or t.name is 'tbody' or t.name is 'tfoot' or t.name is 'thead')
+                       template_ins_modes.shift()
+                       template_ins_modes.unshift ins_mode_in_table
+                       ins_mode = ins_mode_in_table
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'col'
+                       template_ins_modes.shift()
+                       template_ins_modes.unshift ins_mode_in_column_group
+                       ins_mode = ins_mode_in_column_group
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'tr'
+                       template_ins_modes.shift()
+                       template_ins_modes.unshift ins_mode_in_table_body
+                       ins_mode = ins_mode_in_table_body
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'td' or t.name is 'th')
+                       template_ins_modes.shift()
+                       template_ins_modes.unshift ins_mode_in_row
+                       ins_mode = ins_mode_in_row
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG
+                       template_ins_modes.shift()
+                       template_ins_modes.unshift ins_mode_in_body
+                       ins_mode = ins_mode_in_body
+                       process_token t
+                       return
+               if t.type is TYPE_END_TAG
+                       parse_error()
+                       return
+               if t.type is TYPE_EOF
+                       unless template_tag_is_open()
+                               stop_parsing()
+                               return
+                       parse_error()
+                       loop
+                               el = open_els.shift()
+                               if el.name is 'template' and el.namespace is NS_HTML
+                                       break
+                       clear_afe_to_marker()
+                       template_ins_modes.shift()
+                       reset_ins_mode()
+                       process_token t
+
+       # 8.2.5.4.19 http://www.w3.org/TR/html5/syntax.html#parsing-main-afterbody
+       ins_mode_after_body = (t) ->
+               if is_space_tok t
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t, [open_els[0], open_els[0].children.length]
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'html'
+                       # fixfull fragment case
+                       ins_mode = ins_mode_after_after_body
+                       return
+               if t.type is TYPE_EOF
+                       stop_parsing()
+                       return
+               # Anything ELse
+               parse_error()
+               ins_mode = ins_mode_in_body
+               process_token t
+
+       # 8.2.5.4.20 http://www.w3.org/TR/html5/syntax.html#parsing-main-inframeset
+       ins_mode_in_frameset = (t) ->
+               if is_space_tok t
+                       insert_character t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'frameset'
+                       insert_html_element t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'frameset'
+                       if open_els.length is 1
+                               parse_error()
+                               return # fragment case
+                       open_els.shift()
+                       if flag_fragment_parsing is false and open_els[0].name isnt 'frameset'
+                               ins_mode = ins_mode_after_frameset
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'frame'
+                       insert_html_element t
+                       open_els.shift()
+                       t.acknowledge_self_closing()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'noframes'
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_EOF
+                       if open_els.length isnt 1
+                               parse_error()
+                       stop_parsing()
+                       return
+               # Anything else
+               parse_error()
+               return
+
+       # 8.2.5.4.21 http://www.w3.org/TR/html5/syntax.html#parsing-main-afterframeset
+       ins_mode_after_frameset = (t) ->
+               if is_space_tok t
+                       insert_character t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'html'
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'html'
+                       insert_mode = ins_mode_after_after_frameset
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'noframes'
+                       ins_mode_in_head t
+                       return
+               if t.type is TYPE_EOF
+                       stop_parsing()
+                       return
+               # Anything else
+               parse_error()
+               return
+
+       # 8.2.5.4.22 http://www.w3.org/TR/html5/syntax.html#the-after-after-body-insertion-mode
+       ins_mode_after_after_body = (t) ->
+               if t.type is TYPE_COMMENT
+                       insert_comment t, [doc, doc.children.length]
+                       return
+               if t.type is TYPE_DOCTYPE or is_space_tok(t) or (t.type is TYPE_START_TAG and t.name is 'html')
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_EOF
+                       stop_parsing()
+                       return
+               # Anything else
+               parse_error()
+               ins_mode = ins_mode_in_body
+               return
+
+       # 8.2.5.4.23 http://www.w3.org/TR/html5/syntax.html#the-after-after-frameset-insertion-mode
+       ins_mode_after_after_frameset = (t) ->
+               if t.type is TYPE_COMMENT
+                       insert_comment t, [doc, doc.children.length]
+                       return
+               if t.type is TYPE_DOCTYPE or is_space_tok(t) or (t.type is TYPE_START_TAG and t.name is 'html')
+                       ins_mode_in_body t
+                       return
+               if t.type is TYPE_EOF
+                       stop_parsing()
+                       return
+               if t.type is TYPE_START_TAG and t.name is 'noframes'
+                       ins_mode_in_head t
+                       return
+               # Anything else
+               parse_error()
+               return
+
+       # 8.2.5.5 http://www.w3.org/TR/html5/syntax.html#parsing-main-inforeign
+       has_color_face_or_size = (t) ->
+               for a in t.attrs_a
+                       if a[0] is 'color' or a[0] is 'face' or a[0] is 'size'
+                               return true
+               return false
+       in_foreign_content_end_script = ->
+               open_els.shift()
+               # fixfull
+               return
+       in_foreign_content_other_start = (t) ->
+               acn = adjusted_current_node()
+               if acn.namespace is NS_MATHML
+                       adjust_mathml_attributes t
+               if acn.namespace is NS_SVG and svg_name_fixes[t.name]?
+                       t.name = svg_name_fixes[t.name]
+               if acn.namespace is NS_SVG
+                       adjust_svg_attributes t
+               adjust_foreign_attributes t
+               insert_foreign_element t, acn.namespace
+               if t.flag 'self-closing'
+                       if t.name is 'script'
+                               t.acknowledge_self_closing()
+                               in_foreign_content_end_script()
+                       else
+                               open_els.shift()
+                               t.acknowledge_self_closing()
+               return
+       in_foreign_content = (t) ->
+               if t.type is TYPE_TEXT and t.text is "\u0000"
+                       parse_error()
+                       insert_character new_character_token "\ufffd"
+                       return
+               if is_space_tok t
+                       insert_character t
+                       return
+               if t.type is TYPE_TEXT
+                       flag_frameset_ok = false
+                       insert_character t
+                       return
+               if t.type is TYPE_COMMENT
+                       insert_comment t
+                       return
+               if t.type is TYPE_DOCTYPE
+                       parse_error()
+                       return
+               if t.type is TYPE_START_TAG and (t.name is 'b' or t.name is 'big' or t.name is 'blockquote' or t.name is 'body' or t.name is 'br' or t.name is 'center' or t.name is 'code' or t.name is 'dd' or t.name is 'div' or t.name is 'dl' or t.name is 'dt' or t.name is 'em' or t.name is 'embed' or t.name is 'h1' or t.name is 'h2' or t.name is 'h3' or t.name is 'h4' or t.name is 'h5' or t.name is 'h6' or t.name is 'head' or t.name is 'hr' or t.name is 'i' or t.name is 'img' or t.name is 'li' or t.name is 'listing' or t.name is 'main' or t.name is 'meta' or t.name is 'nobr' or t.name is 'ol' or t.name is 'p' or t.name is 'pre' or t.name is 'ruby' or t.name is 's' or t.name is 'small' or t.name is 'span' or t.name is 'strong' or t.name is 'strike' or t.name is 'sub' or t.name is 'sup' or t.name is 'table' or t.name is 'tt' or t.name is 'u' or t.name is 'ul' or t.name is 'var' or (t.name is 'font' and has_color_face_or_size(t)))
+                       parse_error()
+                       if flag_fragment_parsing
+                               in_foreign_content_other_start t
+                               return
+                       loop # is this safe?
+                               open_els.shift()
+                               cn = open_els[0]
+                               if is_mathml_text_integration_point(cn) or is_html_integration(cn) or cn.namespace is NS_HTML
+                                       break
+                       process_token t
+                       return
+               if t.type is TYPE_START_TAG
+                       in_foreign_content_other_start t
+                       return
+               if t.type is TYPE_END_TAG and t.name is 'script' and open_els[0].name is 'script' and open_els[0].namespace is NS_SVG
+                       in_foreign_content_end_script()
+                       return
+               if t.type is TYPE_END_TAG
+                       if open_els[0].name.toLowerCase() isnt t.name
+                               parse_error()
+                       for node in open_els
+                               if node is open_els[open_els.length - 1]
+                                       return
+                               if node.name.toLowerCase() is t.name
+                                       loop
+                                               el = open_els.shift()
+                                               if el is node
+                                                       return
+                               if node.namespace is NS_HTML
+                                       break
+                       ins_mode t # explicitly call HTML insertion mode
+
+
+       # 8.2.4.1 http://www.w3.org/TR/html5/syntax.html#data-state
        tok_state_data = ->
                switch c = txt.charAt(cur++)
                        when '&'
-                               tok_state = tok_state_character_reference_in_data
+                               return new_text_node parse_character_reference()
                        when '<'
                                tok_state = tok_state_tag_open
                        when "\u0000"
-                               # Parse error
-                               return [TYPE_TEXT, c]
+                               parse_error()
+                               return new_text_node "\ufffd"
+                       when '' # EOF
+                               return new_eof_token()
+                       else
+                               return new_text_node c
+               return null
+
+       # 8.2.4.2 http://www.w3.org/TR/html5/syntax.html#character-reference-in-data-state
+       # not needed: tok_state_character_reference_in_data = ->
+       # just call parse_character_reference()
+
+       # 8.2.4.3 http://www.w3.org/TR/html5/syntax.html#rcdata-state
+       tok_state_rcdata = ->
+               switch c = txt.charAt(cur++)
+                       when '&'
+                               return new_text_node parse_character_reference()
+                       when '<'
+                               tok_state = tok_state_rcdata_less_than_sign
+                       when "\u0000"
+                               parse_error()
+                               return new_character_token "\ufffd"
+                       when '' # EOF
+                               return new_eof_token()
+                       else
+                               return new_character_token c
+               return null
+
+       # 8.2.4.4 http://www.w3.org/TR/html5/syntax.html#character-reference-in-rcdata-state
+       # not needed: tok_state_character_reference_in_rcdata = ->
+       # just call parse_character_reference()
+
+       # 8.2.4.5 http://www.w3.org/TR/html5/syntax.html#rawtext-state
+       tok_state_rawtext = ->
+               switch c = txt.charAt(cur++)
+                       when '<'
+                               tok_state = tok_state_rawtext_less_than_sign
+                       when "\u0000"
+                               parse_error()
+                               return new_character_token "\ufffd"
+                       when '' # EOF
+                               return new_eof_token()
+                       else
+                               return new_character_token c
+               return null
+
+       # 8.2.4.6 http://www.w3.org/TR/html5/syntax.html#script-data-state
+       tok_state_script_data = ->
+               switch c = txt.charAt(cur++)
+                       when '<'
+                               tok_state = tok_state_script_data_less_than_sign
+                       when "\u0000"
+                               parse_error()
+                               return new_character_token "\ufffd"
+                       when '' # EOF
+                               return new_eof_token()
+                       else
+                               return new_character_token c
+               return null
+
+       # 8.2.4.7 http://www.w3.org/TR/html5/syntax.html#plaintext-state
+       tok_state_plaintext = ->
+               switch c = txt.charAt(cur++)
+                       when "\u0000"
+                               parse_error()
+                               return new_character_token "\ufffd"
+                       when '' # EOF
+                               return new_eof_token()
                        else
-                               return [TYPE_TEXT, c]
+                               return new_character_token c
                return null
 
-       # http://www.w3.org/TR/html5/syntax.html#tag-open-state
+
+       # 8.2.4.8 http://www.w3.org/TR/html5/syntax.html#tag-open-state
        tok_state_tag_open = ->
                switch c = txt.charAt(cur++)
                        when '!'
@@ -185,144 +2997,1519 @@ parse_html = (txt) ->
                        when '/'
                                tok_state = tok_state_end_tag_open
                        when '?'
-                               # Parse error
+                               parse_error()
+                               tok_cur_tag = new_comment_token '?'
                                tok_state = tok_state_bogus_comment
                        else
-                               if lc_alpha.indexOf(c) > -1
-                                       tok_cur = [TYPE_OPEN_TAG, c, {}, []]
+                               if is_lc_alpha(c)
+                                       tok_cur_tag = new_open_tag c
                                        tok_state = tok_state_tag_name
-                               else if uc_alpha.indexOf(c) > -1
-                                       tok_cur = [TYPE_OPEN_TAG, c.toLowerCase(), {}, []]
+                               else if is_uc_alpha(c)
+                                       tok_cur_tag = new_open_tag c.toLowerCase()
                                        tok_state = tok_state_tag_name
                                else
-                                       # Parse error
+                                       parse_error()
                                        tok_state = tok_state_data
                                        cur -= 1 # we didn't parse/handle the char after <
-                                       return [TYPE_TEXT, '<']
+                                       return new_text_node '<'
                return null
 
-       # http://www.w3.org/TR/html5/syntax.html#tag-name-state
+       # 8.2.4.9 http://www.w3.org/TR/html5/syntax.html#end-tag-open-state
+       tok_state_end_tag_open = ->
+               switch c = txt.charAt(cur++)
+                       when '>'
+                               parse_error()
+                               tok_state = tok_state_data
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               return new_text_node '</'
+                       else
+                               if is_uc_alpha(c)
+                                       tok_cur_tag = new_end_tag c.toLowerCase()
+                                       tok_state = tok_state_tag_name
+                               else if is_lc_alpha(c)
+                                       tok_cur_tag = new_end_tag c
+                                       tok_state = tok_state_tag_name
+                               else
+                                       parse_error()
+                                       tok_cur_tag = new_comment_token '/'
+                                       tok_state = tok_state_bogus_comment
+               return null
+
+       # 8.2.4.10 http://www.w3.org/TR/html5/syntax.html#tag-name-state
        tok_state_tag_name = ->
                switch c = txt.charAt(cur++)
-                       when "\t", "\n", ' '
+                       when "\t", "\n", "\u000c", ' '
                                tok_state = tok_state_before_attribute_name
                        when '/'
                                tok_state = tok_state_self_closing_start_tag
                        when '>'
                                tok_state = tok_state_data
-                               tmp = tok_cur
-                               tok_cur = null
+                               tmp = tok_cur_tag
+                               tok_cur_tag = null
                                return tmp
                        when "\u0000"
-                               # Parse error
-                               tok_cur[1] += "\ufffd"
+                               parse_error()
+                               tok_cur_tag.name += "\ufffd"
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               if is_uc_alpha(c)
+                                       tok_cur_tag.name += c.toLowerCase()
+                               else
+                                       tok_cur_tag.name += c
+               return null
+
+       # 8.2.4.11 http://www.w3.org/TR/html5/syntax.html#rcdata-less-than-sign-state
+       tok_state_rcdata_less_than_sign = ->
+               c = txt.charAt(cur++)
+               if c is '/'
+                       temporary_buffer = ''
+                       tok_state = tok_state_rcdata_end_tag_open
+                       return null
+               # Anything else
+               tok_state = tok_state_rcdata
+               cur -= 1 # reconsume the input character
+               return new_character_token '<'
+
+       # 8.2.4.12 http://www.w3.org/TR/html5/syntax.html#rcdata-end-tag-open-state
+       tok_state_rcdata_end_tag_open = ->
+               c = txt.charAt(cur++)
+               if is_uc_alpha(c)
+                       tok_cur_tag = new_end_tag c.toLowerCase()
+                       temporary_buffer += c
+                       tok_state = tok_state_rcdata_end_tag_name
+                       return null
+               if is_lc_alpha(c)
+                       tok_cur_tag = new_end_tag c
+                       temporary_buffer += c
+                       tok_state = tok_state_rcdata_end_tag_name
+                       return null
+               # Anything else
+               tok_state = tok_state_rcdata
+               cur -= 1 # reconsume the input character
+               return new_character_token "</" # fixfull separate these
+
+       # http://www.w3.org/TR/html5/syntax.html#appropriate-end-tag-token
+       is_appropriate_end_tag = (t) ->
+               # spec says to check against "the tag name of the last start tag to
+               # have been emitted from this tokenizer", but this is only called from
+               # the various "raw" states, so it's hopefully ok to assume that
+               # open_els[0].name will work instead TODO: verify this after the script
+               # data states are implemented
+               debug_log "#{t.type}, #{t.name} open_els: #{serialize_els open_els, true, true}"
+               return t.type is TYPE_END_TAG and t.name is open_els[0].name
+
+       # 8.2.4.13 http://www.w3.org/TR/html5/syntax.html#rcdata-end-tag-name-state
+       tok_state_rcdata_end_tag_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\n" or c is "\u000c" or c is ' '
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_before_attribute_name
+                               return
+                       # else fall through to "Anything else"
+               if c is '/'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_self_closing_start_tag # FIXME spec typo?
+                               return
+                       # else fall through to "Anything else"
+               if c is '>'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       # else fall through to "Anything else"
+               if is_uc_alpha(c)
+                       tok_cur_tag.name += c.toLowerCase()
+                       temporary_buffer += c
+                       return null
+               if is_lc_alpha(c)
+                       tok_cur_tag.name += c
+                       temporary_buffer += c
+                       return null
+               # Anything else
+               tok_state = tok_state_rcdata
+               cur -= 1 # reconsume the input character
+               return new_character_token '</' + temporary_buffer # fixfull separate these
+
+       # 8.2.4.14 http://www.w3.org/TR/html5/syntax.html#rawtext-less-than-sign-state
+       tok_state_rawtext_less_than_sign = ->
+               c = txt.charAt(cur++)
+               if c is '/'
+                       temporary_buffer = ''
+                       tok_state = tok_state_rawtext_end_tag_open
+                       return null
+               # Anything else
+               tok_state = tok_state_rawtext
+               cur -= 1 # reconsume the input character
+               return new_character_token '<'
+
+       # 8.2.4.15 http://www.w3.org/TR/html5/syntax.html#rawtext-end-tag-open-state
+       tok_state_rawtext_end_tag_open = ->
+               c = txt.charAt(cur++)
+               if is_uc_alpha(c)
+                       tok_cur_tag = new_end_tag c.toLowerCase()
+                       temporary_buffer += c
+                       tok_state = tok_state_rawtext_end_tag_name
+                       return null
+               if is_lc_alpha(c)
+                       tok_cur_tag = new_end_tag c
+                       temporary_buffer += c
+                       tok_state = tok_state_rawtext_end_tag_name
+                       return null
+               # Anything else
+               tok_state = tok_state_rawtext
+               cur -= 1 # reconsume the input character
+               return new_character_token "</" # fixfull separate these
+
+       # 8.2.4.16 http://www.w3.org/TR/html5/syntax.html#rawtext-end-tag-name-state
+       tok_state_rawtext_end_tag_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\n" or c is "\u000c" or c is ' '
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_before_attribute_name
+                               return
+                       # else fall through to "Anything else"
+               if c is '/'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_self_closing_start_tag
+                               return
+                       # else fall through to "Anything else"
+               if c is '>'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       # else fall through to "Anything else"
+               if is_uc_alpha(c)
+                       tok_cur_tag.name += c.toLowerCase()
+                       temporary_buffer += c
+                       return null
+               if is_lc_alpha(c)
+                       tok_cur_tag.name += c
+                       temporary_buffer += c
+                       return null
+               # Anything else
+               tok_state = tok_state_rawtext
+               cur -= 1 # reconsume the input character
+               return new_character_token '</' + temporary_buffer # fixfull separate these
+
+       # 8.2.4.17 http://www.w3.org/TR/html5/syntax.html#script-data-less-than-sign-state
+       tok_state_script_data_less_than_sign = ->
+               c = txt.charAt(cur++)
+               if c is '/'
+                       temporary_buffer = ''
+                       tok_state = tok_state_script_data_end_tag_open
+                       return
+               if c is '!'
+                       tok_state = tok_state_script_data_escape_start
+                       return new_character_token '<!' # fixfull split
+               # Anything else
+               tok_state = tok_state_script_data
+               cur -= 1 # Reconsume
+               return new_character_token '<'
+
+       # 8.2.4.18 http://www.w3.org/TR/html5/syntax.html#script-data-end-tag-open-state
+       tok_state_script_data_end_tag_open = ->
+               c = txt.charAt(cur++)
+               if is_uc_alpha(c)
+                       tok_cur_tag = new_end_tag c.toLowerCase()
+                       temporary_buffer += c
+                       tok_state = tok_state_script_data_end_tag_name
+                       return
+               if is_lc_alpha(c)
+                       tok_cur_tag = new_end_tag c
+                       temporary_buffer += c
+                       tok_state = tok_state_script_data_end_tag_name
+                       return
+               # Anything else
+               tok_state = tok_state_script_data
+               cur -= 1 # Reconsume
+               return new_character_token '</'
+
+       # 8.2.4.19 http://www.w3.org/TR/html5/syntax.html#script-data-end-tag-open-state
+       tok_state_script_data_end_tag_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\n" or c is "\u000c" or c is ' '
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_before_attribute_name
+                               return
+                       # fall through
+               if c is '/'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_self_closing_start_tag
+                               return
+                       # fall through
+               if c is '>'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       # fall through
+               if is_uc_alpha(c)
+                       tok_cur_tag.name += c.toLowerCase()
+                       temporary_buffer += c
+                       return
+               if is_lc_alpha(c)
+                       tok_cur_tag.name += c
+                       temporary_buffer += c
+                       return
+               # Anything else
+               tok_state = tok_state_script_data
+               cur -= 1 # Reconsume
+               return new_character_token "</#{temporary_buffer}" # fixfull split
+
+       # 8.2.4.20 http://www.w3.org/TR/html5/syntax.html#script-data-escape-start-state
+       tok_state_script_data_escape_start = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       tok_state = tok_state_script_data_escape_start_dash
+                       return new_character_token '-'
+               # Anything else
+               tok_state = tok_state_script_data
+               cur -= 1 # Reconsume
+               return
+
+       # 8.2.4.21 http://www.w3.org/TR/html5/syntax.html#script-data-escape-start-dash-state
+       tok_state_script_data_escape_start_dash = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       tok_state = tok_state_script_data_escaped_dash_dash
+                       return new_character_token '-'
+               # Anything else
+               tok_state = tok_state_script_data
+               cur -= 1 # Reconsume
+               return
+
+       # 8.2.4.22 http://www.w3.org/TR/html5/syntax.html#script-data-escaped-state
+       tok_state_script_data_escaped = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       tok_state = tok_state_script_data_escaped_dash
+                       return new_character_token '-'
+               if c is '<'
+                       tok_state = tok_state_script_data_escaped_less_than_sign
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       return new_character_token "\ufffd"
+               if c is '' # EOF
+                       tok_state = tok_state_data
+                       parse_error()
+                       cur -= 1 # Reconsume
+                       return
+               # Anything else
+               return new_character_token c
+
+       # 8.2.4.23 http://www.w3.org/TR/html5/syntax.html#script-data-escaped-dash-state
+       tok_state_script_data_escaped_dash = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       tok_state = tok_state_script_data_escaped_dash_dash
+                       return new_character_token '-'
+               if c is '<'
+                       tok_state = tok_state_script_data_escaped_less_than_sign
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_state = tok_state_script_data_escaped
+                       return new_character_token "\ufffd"
+               if c is '' # EOF
+                       tok_state = tok_state_data
+                       parse_error()
+                       cur -= 1 # Reconsume
+                       return
+               # Anything else
+               tok_state = tok_state_script_data_escaped
+               return new_character_token c
+
+       # 8.2.4.24 http://www.w3.org/TR/html5/syntax.html#script-data-escaped-dash-dash-state
+       tok_state_script_data_escaped_dash_dash = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       return new_character_token '-'
+               if c is '<'
+                       tok_state = tok_state_script_data_escaped_less_than_sign
+                       return
+               if c is '>'
+                       tok_state = tok_state_script_data
+                       return new_character_token '>'
+               if c is "\u0000"
+                       parse_error()
+                       tok_state = tok_state_script_data_escaped
+                       return new_character_token "\ufffd"
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       cur -= 1 # Reconsume
+                       return
+               # Anything else
+               tok_state = tok_state_script_data_escaped
+               return new_character_token c
+
+       # 8.2.4.25 http://www.w3.org/TR/html5/syntax.html#script-data-escaped-less-than-sign-state
+       tok_state_script_data_escaped_less_than_sign = ->
+               c = txt.charAt(cur++)
+               if c is '/'
+                       temporary_buffer = ''
+                       tok_state = tok_state_script_data_escaped_end_tag_open
+                       return
+               if is_uc_alpha(c)
+                       temporary_buffer = c.toLowerCase() # yes, really
+                       tok_state = tok_state_script_data_double_escape_start
+                       return new_character_token "<#{c}" # fixfull split
+               if is_lc_alpha(c)
+                       temporary_buffer = c
+                       tok_state = tok_state_script_data_double_escape_start
+                       return new_character_token "<#{c}" # fixfull split
+               # Anything else
+               tok_state = tok_state_script_data_escaped
+               cur -= 1 # Reconsume
+               return new_character_token c
+
+       # 8.2.4.26 http://www.w3.org/TR/html5/syntax.html#script-data-escaped-end-tag-open-state
+       tok_state_script_data_escaped_end_tag_open = ->
+               c = txt.charAt(cur++)
+               if is_uc_alpha(c)
+                       tok_cur_tag = new_end_tag c.toLowerCase()
+                       temporary_buffer += c
+                       tok_state = tok_state_script_data_escaped_end_tag_name
+                       return
+               if is_lc_alpha(c)
+                       tok_cur_tag = new_end_tag c
+                       temporary_buffer += c
+                       tok_state = tok_state_script_data_escaped_end_tag_name
+                       return
+               # Anything else
+               tok_state = tok_state_script_data_escaped
+               cur -= 1 # Reconsume
+               return new_character_token '</' # fixfull split
+
+       # 8.2.4.27 http://www.w3.org/TR/html5/syntax.html#script-data-escaped-end-tag-name-state
+       tok_state_script_data_escaped_end_tag_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_before_attribute_name
+                               return
+                       # fall through
+               if c is '/'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_self_closing_start_tag
+                               return
+                       # fall through
+               if c is '>'
+                       if is_appropriate_end_tag tok_cur_tag
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       # fall through
+               if is_uc_alpha(c)
+                       tok_cur_tag.name += c.toLowerCase()
+                       temporary_buffer += c.toLowerCase()
+                       return
+               if is_lc_alpha(c)
+                       tok_cur_tag.name += c
+                       temporary_buffer += c.toLowerCase()
+                       return
+               # Anything else
+               tok_state = tok_state_script_data_escaped
+               cur -= 1 # Reconsume
+               return new_character_token "</#{temporary_buffer}" # fixfull split
+
+       # 8.2.4.28 http://www.w3.org/TR/html5/syntax.html#script-data-double-escape-start-state
+       tok_state_script_data_double_escape_start = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' ' or c is '/' or c is '>'
+                       if temporary_buffer is 'script'
+                               tok_state = tok_state_script_data_double_escaped
                        else
-                               if uc_alpha.indexOf(c) > -1
-                                       tok_cur[1] += c.toLowerCase()
+                               tok_state = tok_state_script_data_escaped
+                       return new_character_token c
+               if is_uc_alpha(c)
+                       temporary_buffer += c.toLowerCase() # yes, really lowercase
+                       return new_character_token c
+               if is_lc_alpha(c)
+                       temporary_buffer += c
+                       return new_character_token c
+               # Anything else
+               tok_state = tok_state_script_data_escaped
+               cur -= 1 # Reconsume
+               return
+
+       # 8.2.4.29 http://www.w3.org/TR/html5/syntax.html#script-data-double-escaped-state
+       tok_state_script_data_double_escaped = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       tok_state = tok_state_script_data_double_escaped_dash
+                       return new_character_token '-'
+               if c is '<'
+                       tok_state = tok_state_script_data_double_escaped_less_than_sign
+                       return new_character_token '<'
+               if c is "\u0000"
+                       parse_error()
+                       return new_character_token "\ufffd"
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       cur -= 1 # Reconsume
+                       return
+               # Anything else
+               return new_character_token c
+
+       # 8.2.4.30 http://www.w3.org/TR/html5/syntax.html#script-data-double-escaped-dash-state
+       tok_state_script_data_double_escaped_dash = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       tok_state = tok_state_script_data_double_escaped_dash_dash
+                       return new_character_token '-'
+               if c is '<'
+                       tok_state = tok_state_script_data_double_escaped_less_than_sign
+                       return new_character_token '<'
+               if c is "\u0000"
+                       parse_error()
+                       tok_state = tok_state_script_data_double_escaped
+                       return new_character_token "\ufffd"
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       cur -= 1 # Reconsume
+                       return
+               # Anything else
+               tok_state = tok_state_script_data_double_escaped
+               return new_character_token c
+
+       # 8.2.4.31 http://www.w3.org/TR/html5/syntax.html#script-data-double-escaped-dash-dash-state
+       tok_state_script_data_double_escaped_dash_dash = ->
+               c = txt.charAt(cur++)
+               if c is '-'
+                       return new_character_token '-'
+               if c is '<'
+                       tok_state = tok_state_script_data_double_escaped_less_than_sign
+                       return new_character_token '<'
+               if c is '>'
+                       tok_state = tok_state_script_data
+                       return new_character_token '>'
+               if c is "\u0000"
+                       parse_error()
+                       tok_state = tok_state_script_data_double_escaped
+                       return new_character_token "\ufffd"
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       cur -= 1 # Reconsume
+                       return
+               # Anything else
+               tok_state = tok_state_script_data_double_escaped
+               return new_character_token c
+
+       # 8.2.4.32 http://www.w3.org/TR/html5/syntax.html#script-data-double-escaped-less-than-sign-state
+       tok_state_script_data_double_escaped_less_than_sign = ->
+               c = txt.charAt(cur++)
+               if c is '/'
+                       temporary_buffer = ''
+                       tok_state = tok_state_script_data_double_escape_end
+                       return new_character_token '/'
+               # Anything else
+               tok_state = tok_state_script_data_double_escaped
+               cur -= 1 # Reconsume
+               return
+
+       # 8.2.4.33 http://www.w3.org/TR/html5/syntax.html#script-data-double-escape-end-state
+       tok_state_script_data_double_escape_end = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' ' or c is '/' or c is '>'
+                       if temporary_buffer is 'script'
+                               tok_state = tok_state_script_data_escaped
+                       else
+                               tok_state = tok_state_script_data_double_escaped
+                       return new_character_token c
+               if is_uc_alpha(c)
+                       temporary_buffer += c.toLowerCase() # yes, really lowercase
+                       return new_character_token c
+               if is_lc_alpha(c)
+                       temporary_buffer += c
+                       return new_character_token c
+               # Anything else
+               tok_state = tok_state_script_data_double_escaped
+               cur -= 1 # Reconsume
+               return
+
+       # 8.2.4.34 http://www.w3.org/TR/html5/syntax.html#before-attribute-name-state
+       tok_state_before_attribute_name = ->
+               attr_name = null
+               switch c = txt.charAt(cur++)
+                       when "\t", "\n", "\u000c", ' '
+                               return null
+                       when '/'
+                               tok_state = tok_state_self_closing_start_tag
+                               return null
+                       when '>'
+                               tok_state = tok_state_data
+                               tmp = tok_cur_tag
+                               tok_cur_tag = null
+                               return tmp
+                       when "\u0000"
+                               parse_error()
+                               attr_name = "\ufffd"
+                       when '"', "'", '<', '='
+                               parse_error()
+                               attr_name = c
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               if is_uc_alpha(c)
+                                       attr_name = c.toLowerCase()
                                else
-                                       tok_cur[1] += c
+                                       attr_name = c
+               if attr_name?
+                       tok_cur_tag.attrs_a.unshift [attr_name, '']
+                       tok_state = tok_state_attribute_name
+               return null
+
+       # 8.2.4.35 http://www.w3.org/TR/html5/syntax.html#attribute-name-state
+       tok_state_attribute_name = ->
+               switch c = txt.charAt(cur++)
+                       when "\t", "\n", "\u000c", ' '
+                               tok_state = tok_state_after_attribute_name
+                       when '/'
+                               tok_state = tok_state_self_closing_start_tag
+                       when '='
+                               tok_state = tok_state_before_attribute_value
+                       when '>'
+                               tok_state = tok_state_data
+                               tmp = tok_cur_tag
+                               tok_cur_tag = null
+                               return tmp
+                       when "\u0000"
+                               parse_error()
+                               tok_cur_tag.attrs_a[0][0] += "\ufffd"
+                       when '"', "'", '<'
+                               parse_error()
+                               tok_cur_tag.attrs_a[0][0] += c
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               if is_uc_alpha(c)
+                                       tok_cur_tag.attrs_a[0][0] += c.toLowerCase()
+                               else
+                                       tok_cur_tag.attrs_a[0][0] += c
+               return null
+
+       # 8.2.4.36 http://www.w3.org/TR/html5/syntax.html#after-attribute-name-state
+       tok_state_after_attribute_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\n" or c is "\u000c" or c is ' '
+                       return
+               if c is '/'
+                       tok_state = tok_state_self_closing_start_tag
+                       return
+               if c is '='
+                       tok_state = tok_state_before_attribute_value
+                       return
+               if c is '>'
+                       tok_state = tok_state_data
+                       return
+               if is_uc_alpha(c)
+                       tok_cur_tag.attrs_a.unshift [c.toLowerCase(), '']
+                       tok_state = tok_state_attribute_name
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_cur_tag.attrs_a.unshift ["\ufffd", '']
+                       tok_state = tok_state_attribute_name
+                       return
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       cur -= 1 # reconsume
+                       return
+               if c is '"' or c is "'" or c is '<'
+                       parse_error()
+                       # fall through to Anything else
+               # Anything else
+               tok_cur_tag.attrs_a.unshift [c, '']
+               tok_state = tok_state_attribute_name
+
+       # 8.2.4.37 http://www.w3.org/TR/html5/syntax.html#before-attribute-value-state
+       tok_state_before_attribute_value = ->
+               switch c = txt.charAt(cur++)
+                       when "\t", "\n", "\u000c", ' '
+                               return null
+                       when '"'
+                               tok_state = tok_state_attribute_value_double_quoted
+                       when '&'
+                               tok_state = tok_state_attribute_value_unquoted
+                               cur -= 1
+                       when "'"
+                               tok_state = tok_state_attribute_value_single_quoted
+                       when "\u0000"
+                               # Parse error
+                               tok_cur_tag.attrs_a[0][1] += "\ufffd"
+                               tok_state = tok_state_attribute_value_unquoted
+                       when '>'
+                               # Parse error
+                               tok_state = tok_state_data
+                               tmp = tok_cur_tag
+                               tok_cur_tag = null
+                               return tmp
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               tok_cur_tag.attrs_a[0][1] += c
+                               tok_state = tok_state_attribute_value_unquoted
+               return null
+
+       # 8.2.4.38 http://www.w3.org/TR/html5/syntax.html#attribute-value-(double-quoted)-state
+       tok_state_attribute_value_double_quoted = ->
+               switch c = txt.charAt(cur++)
+                       when '"'
+                               tok_state = tok_state_after_attribute_value_quoted
+                       when '&'
+                               tok_cur_tag.attrs_a[0][1] += parse_character_reference '"', true
+                       when "\u0000"
+                               # Parse error
+                               tok_cur_tag.attrs_a[0][1] += "\ufffd"
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               tok_cur_tag.attrs_a[0][1] += c
+               return null
+
+       # 8.2.4.39 http://www.w3.org/TR/html5/syntax.html#attribute-value-(single-quoted)-state
+       tok_state_attribute_value_single_quoted = ->
+               switch c = txt.charAt(cur++)
+                       when "'"
+                               tok_state = tok_state_after_attribute_value_quoted
+                       when '&'
+                               tok_cur_tag.attrs_a[0][1] += parse_character_reference "'", true
+                       when "\u0000"
+                               # Parse error
+                               tok_cur_tag.attrs_a[0][1] += "\ufffd"
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               tok_cur_tag.attrs_a[0][1] += c
+               return null
+
+       # 8.2.4.40 http://www.w3.org/TR/html5/syntax.html#attribute-value-(unquoted)-state
+       tok_state_attribute_value_unquoted = ->
+               switch c = txt.charAt(cur++)
+                       when "\t", "\n", "\u000c", ' '
+                               tok_state = tok_state_before_attribute_name
+                       when '&'
+                               tok_cur_tag.attrs_a[0][1] += parse_character_reference '>', true
+                       when '>'
+                               tok_state = tok_state_data
+                               tmp = tok_cur_tag
+                               tok_cur_tag = null
+                               return tmp
+                       when "\u0000"
+                               tok_cur_tag.attrs_a[0][1] += "\ufffd"
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               # Parse Error if ', <, = or ` (backtick)
+                               tok_cur_tag.attrs_a[0][1] += c
+               return null
+
+       # 8.2.4.42 http://www.w3.org/TR/html5/syntax.html#after-attribute-value-(quoted)-state
+       tok_state_after_attribute_value_quoted = ->
+               switch c = txt.charAt(cur++)
+                       when "\t", "\n", "\u000c", ' '
+                               tok_state = tok_state_before_attribute_name
+                       when '/'
+                               tok_state = tok_state_self_closing_start_tag
+                       when '>'
+                               tok_state = tok_state_data
+                               tmp = tok_cur_tag
+                               tok_cur_tag = null
+                               return tmp
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                       else
+                               # Parse Error
+                               tok_state = tok_state_before_attribute_name
+                               cur -= 1 # we didn't handle that char
                return null
 
-       # http://www.w3.org/TR/html5/syntax.html#character-reference-in-data-state
-       # & just got consumed
-       tok_state_character_reference_in_data = ->
+       # 8.2.4.43 http://www.w3.org/TR/html5/syntax.html#self-closing-start-tag-state
+       tok_state_self_closing_start_tag = ->
+               c = txt.charAt(cur++)
+               if c is '>'
+                       tok_cur_tag.flag 'self-closing'
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is ''
+                       parse_error()
+                       tok_state = tok_state_data
+                       cur -= 1 # Reconsume
+                       return
+               # Anything else
+               parse_error()
+               tok_state = tok_state_before_attribute_name
+               cur -= 1 # Reconsume
+               return
+
+       # 8.2.4.44 http://www.w3.org/TR/html5/syntax.html#bogus-comment-state
+       # WARNING: put a comment token in tok_cur_tag before setting this state
+       tok_state_bogus_comment = ->
+               next_gt = txt.indexOf '>', cur
+               if next_gt is -1
+                       val = txt.substr cur
+                       cur = txt.length
+               else
+                       val = txt.substr cur, (next_gt - cur)
+                       cur = next_gt + 1
+               val = val.replace(new RegExp("\u0000", 'g'), "\ufffd")
+               tok_cur_tag.text += val
                tok_state = tok_state_data
+               return tok_cur_tag
+
+       # 8.2.4.45 http://www.w3.org/TR/html5/syntax.html#markup-declaration-open-state
+       tok_state_markup_declaration_open = ->
+               if txt.substr(cur, 2) is '--'
+                       cur += 2
+                       tok_cur_tag = new_comment_token ''
+                       tok_state = tok_state_comment_start
+                       return
+               if txt.substr(cur, 7).toLowerCase() is 'doctype'
+                       cur += 7
+                       tok_state = tok_state_doctype
+                       return
+               acn = adjusted_current_node()
+               if acn and acn.namespace isnt NS_HTML and txt.substr(cur, 7) is '[CDATA['
+                       cur += 7
+                       tok_state = tok_state_cdata_section
+                       return
+               # Otherwise
+               parse_error()
+               tok_cur_tag = new_comment_token ''
+               tok_state = tok_state_bogus_comment
+               return
+
+       # 8.2.4.46 http://www.w3.org/TR/html5/syntax.html#comment-start-state
+       tok_state_comment_start = ->
+               switch c = txt.charAt(cur++)
+                       when '-'
+                               tok_state = tok_state_comment_start_dash
+                       when "\u0000"
+                               parse_error()
+                               tok_state = tok_state_comment
+                               return new_character_token "\ufffd"
+                       when '>'
+                               parse_error()
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               cur -= 1 # Reconsume
+                               return tok_cur_tag
+                       else
+                               tok_cur_tag.text += c
+                               tok_state = tok_state_comment
+               return null
+
+       # 8.2.4.47 http://www.w3.org/TR/html5/syntax.html#comment-start-dash-state
+       tok_state_comment_start_dash = ->
+               switch c = txt.charAt(cur++)
+                       when '-'
+                               tok_state = tok_state_comment_end
+                       when "\u0000"
+                               parse_error()
+                               tok_cur_tag.text += "-\ufffd"
+                               tok_state = tok_state_comment
+                       when '>'
+                               parse_error()
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               cur -= 1 # Reconsume
+                               return tok_cur_tag
+                       else
+                               tok_cur_tag.text += "-#{c}"
+                               tok_state = tok_state_comment
+               return null
+
+       # 8.2.4.48 http://www.w3.org/TR/html5/syntax.html#comment-state
+       tok_state_comment = ->
+               switch c = txt.charAt(cur++)
+                       when '-'
+                               tok_state = tok_state_comment_end_dash
+                       when "\u0000"
+                               parse_error()
+                               tok_cur_tag.text += "\ufffd"
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               cur -= 1 # Reconsume
+                               return tok_cur_tag
+                       else
+                               tok_cur_tag.text += c
+               return null
+
+       # 8.2.4.49 http://www.w3.org/TR/html5/syntax.html#comment-end-dash-state
+       tok_state_comment_end_dash = ->
+               switch c = txt.charAt(cur++)
+                       when '-'
+                               tok_state = tok_state_comment_end
+                       when "\u0000"
+                               parse_error()
+                               tok_cur_tag.text += "-\ufffd"
+                               tok_state = tok_state_comment
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               cur -= 1 # Reconsume
+                               return tok_cur_tag
+                       else
+                               tok_cur_tag.text += "-#{c}"
+                               tok_state = tok_state_comment
+               return null
+
+       # 8.2.4.50 http://www.w3.org/TR/html5/syntax.html#comment-end-state
+       tok_state_comment_end = ->
+               switch c = txt.charAt(cur++)
+                       when '>'
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       when "\u0000"
+                               parse_error()
+                               tok_cur_tag.text += "--\ufffd"
+                               tok_state = tok_state_comment
+                       when '!'
+                               parse_error()
+                               tok_state = tok_state_comment_end_bang
+                       when '-'
+                               parse_error()
+                               tok_cur_tag.text += '-'
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               cur -= 1 # Reconsume
+                               return tok_cur_tag
+                       else
+                               parse_error()
+                               tok_cur_tag.text += "--#{c}"
+                               tok_state = tok_state_comment
+               return null
+
+       # 8.2.4.51 http://www.w3.org/TR/html5/syntax.html#comment-end-bang-state
+       tok_state_comment_end_bang = ->
+               switch c = txt.charAt(cur++)
+                       when '-'
+                               tok_cur_tag.text += "--!#{c}"
+                               tok_state = tok_state_comment_end_dash
+                       when '>'
+                               tok_state = tok_state_data
+                               return tok_cur_tag
+                       when "\u0000"
+                               parse_error()
+                               tok_cur_tag.text += "--!\ufffd"
+                               tok_state = tok_state_comment
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               cur -= 1 # Reconsume
+                               return tok_cur_tag
+                       else
+                               tok_cur_tag.text += "--!#{c}"
+                               tok_state = tok_state_comment
+               return null
+
+       # 8.2.4.52 http://www.w3.org/TR/html5/syntax.html#doctype-state
+       tok_state_doctype = ->
+               switch c = txt.charAt(cur++)
+                       when "\t", "\u000a", "\u000c", ' '
+                               tok_state = tok_state_before_doctype_name
+                       when '' # EOF
+                               parse_error()
+                               tok_state = tok_state_data
+                               el = new_doctype_token ''
+                               el.flag 'force-quirks', true
+                               cur -= 1 # Reconsume
+                               return el
+                       else
+                               parse_error()
+                               tok_state = tok_state_before_doctype_name
+                               cur -= 1 # Reconsume
+               return null
+
+       # 8.2.4.52 http://www.w3.org/TR/html5/syntax.html#doctype-state
+       tok_state_before_doctype_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       return
+               if is_uc_alpha(c)
+                       tok_cur_tag = new_doctype_token c.toLowerCase()
+                       tok_state = tok_state_doctype_name
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_cur_tag = new_doctype_token "\ufffd"
+                       tok_state = tok_state_doctype_name
+                       return
+               if c is '>'
+                       parse_error()
+                       el = new_doctype_token ''
+                       el.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return el
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       el = new_doctype_token ''
+                       el.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return el
+               # Anything else
+               tok_cur_tag = new_doctype_token c
+               tok_state = tok_state_doctype_name
+               return null
+
+       # 8.2.4.54 http://www.w3.org/TR/html5/syntax.html#doctype-name-state
+       tok_state_doctype_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       tok_state = tok_state_after_doctype_name
+                       return
+               if c is '>'
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if is_uc_alpha(c)
+                       tok_cur_tag.name += c.toLowerCase()
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_cur_tag.name += "\ufffd"
+                       return
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               tok_cur_tag.name += c
+               return null
+
+       # 8.2.4.55 http://www.w3.org/TR/html5/syntax.html#after-doctype-name-state
+       tok_state_after_doctype_name = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       return
+               if c is '>'
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               if txt.substr(cur - 1, 6).toLowerCase() is 'public'
+                       cur += 5
+                       tok_state = tok_state_after_doctype_public_keyword
+                       return
+               if txt.substr(cur - 1, 6).toLowerCase() is 'system'
+                       cur += 5
+                       tok_state = tok_state_after_doctype_system_keyword
+                       return
+               parse_error()
+               tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+       # 8.2.4.56 http://www.w3.org/TR/html5/syntax.html#after-doctype-public-keyword-state
+       tok_state_after_doctype_public_keyword = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       tok_state = tok_state_before_doctype_public_identifier
+                       return
+               if c is '"'
+                       parse_error()
+                       tok_cur_tag.public_identifier = ''
+                       tok_state = tok_state_doctype_public_identifier_double_quoted
+                       return
+               if c is "'"
+                       parse_error()
+                       tok_cur_tag.public_identifier = ''
+                       tok_state = tok_state_doctype_public_identifier_single_quoted
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               parse_error()
+               tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+       # 8.2.4.57 http://www.w3.org/TR/html5/syntax.html#before-doctype-public-identifier-state
+       tok_state_before_doctype_public_identifier = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       return
+               if c is '"'
+                       parse_error()
+                       tok_cur_tag.public_identifier = ''
+                       tok_state = tok_state_doctype_public_identifier_double_quoted
+                       return
+               if c is "'"
+                       parse_error()
+                       tok_cur_tag.public_identifier = ''
+                       tok_state = tok_state_doctype_public_identifier_single_quoted
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               parse_error()
+               tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+
+       # 8.2.4.58 http://www.w3.org/TR/html5/syntax.html#doctype-public-identifier-(double-quoted)-state
+       tok_state_doctype_public_identifier_double_quoted = ->
+               c = txt.charAt(cur++)
+               if c is '"'
+                       tok_state = tok_state_after_doctype_public_identifier
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_cur_tag.public_identifier += "\ufffd"
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               tok_cur_tag.public_identifier += c
+               return null
+
+       # 8.2.4.59 http://www.w3.org/TR/html5/syntax.html#doctype-public-identifier-(single-quoted)-state
+       tok_state_doctype_public_identifier_single_quoted = ->
+               c = txt.charAt(cur++)
+               if c is "'"
+                       tok_state = tok_state_after_doctype_public_identifier
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_cur_tag.public_identifier += "\ufffd"
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               tok_cur_tag.public_identifier += c
+               return null
+
+       # 8.2.4.60 http://www.w3.org/TR/html5/syntax.html#after-doctype-public-identifier-state
+       tok_state_after_doctype_public_identifier = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       tok_state = tok_state_between_doctype_public_and_system_identifiers
+                       return
+               if c is '>'
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '"'
+                       parse_error()
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_double_quoted
+                       return
+               if c is "'"
+                       parse_error()
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_single_quoted
+                       return
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               parse_error()
+               tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+       # 8.2.4.61 http://www.w3.org/TR/html5/syntax.html#between-doctype-public-and-system-identifiers-state
+       tok_state_between_doctype_public_and_system_identifiers = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       return
+               if c is '>'
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '"'
+                       parse_error()
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_double_quoted
+                       return
+               if c is "'"
+                       parse_error()
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_single_quoted
+                       return
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               parse_error()
+               tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+       # 8.2.4.62 http://www.w3.org/TR/html5/syntax.html#after-doctype-system-keyword-state
+       tok_state_after_doctype_system_keyword = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       tok_state = tok_state_before_doctype_system_identifier
+                       return
+               if c is '"'
+                       parse_error()
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_double_quoted
+                       return
+               if c is "'"
+                       parse_error()
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_single_quoted
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               parse_error()
+               tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+       # 8.2.4.63 http://www.w3.org/TR/html5/syntax.html#before-doctype-system-identifier-state
+       tok_state_before_doctype_system_identifier = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       return
+               if c is '"'
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_double_quoted
+                       return
+               if c is "'"
+                       tok_cur_tag.system_identifier = ''
+                       tok_state = tok_state_doctype_system_identifier_single_quoted
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               parse_error()
+               tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+       # 8.2.4.64 http://www.w3.org/TR/html5/syntax.html#doctype-system-identifier-(double-quoted)-state
+       tok_state_doctype_system_identifier_double_quoted = ->
+               c = txt.charAt(cur++)
+               if c is '"'
+                       tok_state = tok_state_after_doctype_system_identifier
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_cur_tag.system_identifier += "\ufffd"
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               tok_cur_tag.system_identifier += c
+               return null
+
+       # 8.2.4.65 http://www.w3.org/TR/html5/syntax.html#doctype-system-identifier-(single-quoted)-state
+       tok_state_doctype_system_identifier_single_quoted = ->
+               c = txt.charAt(cur++)
+               if c is "'"
+                       tok_state = tok_state_after_doctype_system_identifier
+                       return
+               if c is "\u0000"
+                       parse_error()
+                       tok_cur_tag.system_identifier += "\ufffd"
+                       return
+               if c is '>'
+                       parse_error()
+                       tok_cur_tag.flag 'force-quirks', true
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               tok_cur_tag.system_identifier += c
+               return null
+
+       # 8.2.4.66 http://www.w3.org/TR/html5/syntax.html#after-doctype-system-identifier-state
+       tok_state_after_doctype_system_identifier = ->
+               c = txt.charAt(cur++)
+               if c is "\t" or c is "\u000a" or c is "\u000c" or c is ' '
+                       return
+               if c is '>'
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       parse_error()
+                       tok_state = tok_state_data
+                       tok_cur_tag.flag 'force-quirks', true
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               parse_error()
+               # do _not_ tok_cur_tag.flag 'force-quirks', true
+               tok_state = tok_state_bogus_doctype
+               return null
+
+       # 8.2.4.67 http://www.w3.org/TR/html5/syntax.html#bogus-doctype-state
+       tok_state_bogus_doctype = ->
+               c = txt.charAt(cur++)
+               if c is '>'
+                       tok_state = tok_state_data
+                       return tok_cur_tag
+               if c is '' # EOF
+                       tok_state = tok_state_data
+                       cur -= 1 # Reconsume
+                       return tok_cur_tag
+               # Anything else
+               return null
+
+       # 8.2.4.68 http://www.w3.org/TR/html5/syntax.html#cdata-section-state
+       tok_state_cdata_section = ->
+               tok_state = tok_state_data
+               next_gt = txt.indexOf ']]>', cur
+               if next_gt is -1
+                       val = txt.substr cur
+                       cur = txt.length
+               else
+                       val = txt.substr cur, (next_gt - cur)
+                       cur = next_gt + 3
+               return new_character_token val # fixfull split
+
+       # 8.2.4.69 http://www.w3.org/TR/html5/syntax.html#consume-a-character-reference
+       # Don't set this as a state, just call it
+       # returns a string (NOT a text node)
+       parse_character_reference = (allowed_char = null, in_attr = false) ->
                if cur >= txt.length
-                       return [TYPE_TEXT, '&']
+                       return '&'
                switch c = txt.charAt(cur)
+                       when "\t", "\n", "\u000c", ' ', '<', '&', '', allowed_char
+                               # explicitly not a parse error
+                               return '&'
                        when ';'
-                               return [TYPE_TEXT, '&']
+                               # there has to be "one or more" alnums between & and ; to be a parse error
+                               return '&'
                        when '#'
                                if cur + 1 >= txt.length
-                                       return [TYPE_TEXT, '&']
+                                       return '&'
                                if txt.charAt(cur + 1).toLowerCase() is 'x'
-                                       prefix = '#x'
+                                       base = 16
                                        charset = hex_chars
                                        start = cur + 2
                                else
                                        charset = digits
                                        start = cur + 1
-                                       prefix = '#'
+                                       base = 10
                                i = 0
                                while start + i < txt.length and charset.indexOf(txt.charAt(start + i)) > -1
                                        i += 1
                                if i is 0
-                                       return [TYPE_TEXT, '&']
+                                       return '&'
+                               cur = start + i
                                if txt.charAt(start + i) is ';'
-                                       i += 1
-                               decoded = decode_named_char_ref(prefix + txt.substr(start, i).toLowerCase())
-                               if decoded?
-                                       cur = start + i
-                                       return [TYPE_TEXT, decoded]
-                               return [TYPE_TEXT, '&']
+                                       cur += 1
+                               else
+                                       parse_error()
+                               code_point = txt.substr(start, i)
+                               while code_point.charAt(0) is '0' and code_point.length > 1
+                                       code_point = code_point.substr 1
+                               code_point = parseInt(code_point, base)
+                               if unicode_fixes[code_point]?
+                                       parse_error()
+                                       return unicode_fixes[code_point]
+                               else
+                                       if (code_point >= 0xd800 and code_point <= 0xdfff) or code_point > 0x10ffff
+                                               parse_error()
+                                               return "\ufffd"
+                                       else
+                                               if (code_point >= 0x0001 and code_point <= 0x0008) or (code_point >= 0x000D and code_point <= 0x001F) or (code_point >= 0x007F and code_point <= 0x009F) or (code_point >= 0xFDD0 and code_point <= 0xFDEF) or code_point is 0x000B or code_point is 0xFFFE or code_point is 0xFFFF or code_point is 0x1FFFE or code_point is 0x1FFFF or code_point is 0x2FFFE or code_point is 0x2FFFF or code_point is 0x3FFFE or code_point is 0x3FFFF or code_point is 0x4FFFE or code_point is 0x4FFFF or code_point is 0x5FFFE or code_point is 0x5FFFF or code_point is 0x6FFFE or code_point is 0x6FFFF or code_point is 0x7FFFE or code_point is 0x7FFFF or code_point is 0x8FFFE or code_point is 0x8FFFF or code_point is 0x9FFFE or code_point is 0x9FFFF or code_point is 0xAFFFE or code_point is 0xAFFFF or code_point is 0xBFFFE or code_point is 0xBFFFF or code_point is 0xCFFFE or code_point is 0xCFFFF or code_point is 0xDFFFE or code_point is 0xDFFFF or code_point is 0xEFFFE or code_point is 0xEFFFF or code_point is 0xFFFFE or code_point is 0xFFFFF or code_point is 0x10FFFE or code_point is 0x10FFFF
+                                                       parse_error()
+                                               return from_code_point code_point
+                               return
                        else
                                for i in [0...31]
                                        if alnum.indexOf(txt.charAt(cur + i)) is -1
                                                break
                                if i is 0
-                                       return [TYPE_TEXT, '&']
+                                       # exit early, because parse_error() below needs at least one alnum
+                                       return '&'
                                if txt.charAt(cur + i) is ';'
                                        i += 1 # include ';' terminator in value
                                        decoded = decode_named_char_ref txt.substr(cur, i)
                                        if decoded?
                                                cur += i
-                                               return [TYPE_TEXT, decoded]
-                                       return [TYPE_TEXT, '&']
+                                               return decoded
+                                       parse_error()
+                                       return '&'
                                else
                                        # no ';' terminator (only legacy char refs)
-                                       if i < 2 or i > 6
-                                               return [TYPE_TEXT, '&']
-                                       # FIXME: if we're inside an attribute:
-                                       # 1.    don't parse refs that are followed by =
-                                       # 2.    don't parse refs that are followed by alnum
                                        max = i
                                        for i in [2..max] # no prefix matches, so ok to check shortest first
                                                c = legacy_char_refs[txt.substr(cur, i)]
                                                if c?
+                                                       if in_attr
+                                                               if txt.charAt(cur + i) is '='
+                                                                       # "because some legacy user agents will
+                                                                       # misinterpret the markup in those cases"
+                                                                       parse_error()
+                                                                       return '&'
+                                                               if alnum.indexOf(txt.charAt(cur + i)) > -1
+                                                                       # this makes attributes forgiving about url args
+                                                                       return '&'
+                                                       # ok, and besides the weird exceptions for attributes...
+                                                       # return the matching char
                                                        cur += i # consume entity chars
-                                                       return [TYPE_TEXT, c]
-               return null
-
-       # the functions below impliment the Tree Contstruction algorithm here:
-       # http://www.w3.org/TR/html5/syntax.html#tree-construction
-       # FIXME this is just a bit of a hack that makes sense... read spec and do it that way
-       tree_append = (t) ->
-               if t[0] is TYPE_TEXT and tree_append_point.length > 0 and tree_append_point[tree_append_point.length - 1][0] is TYPE_TEXT
-                       tree_append_point[tree_append_point.length - 1][1] += t[1]
-               else
-                       tree_append_point.push t
-                       if t[0] is TYPE_OPEN_TAG
-                               t[0] = TYPE_TAG
-                               tree_append_point = t[3]
+                                                       parse_error() # because no terminating ";"
+                                                       return c
+                                       parse_error()
+                                       return '&'
+               return # never reached
 
        # tree constructor initialization
-       tree = [] # see comments on TYPE_TAG/etc for the structure of this data
-       tree_append_point = tree
-       tree_state = tree_append
+       # see comments on TYPE_TAG/etc for the structure of this data
+       txt = args.html
+       cur = 0
+       doc = new Node TYPE_TAG, name: 'html', namespace: NS_HTML
+       open_els = []
+       afe = [] # active formatting elements
+       template_ins_modes = []
+       ins_mode = ins_mode_initial
+       original_ins_mode = ins_mode # TODO check spec
+       flag_scripting = args.scripting ? true # TODO might need an extra flag to get <noscript> to parse correctly
+       flag_frameset_ok = true
+       flag_parsing = true
+       flag_foster_parenting = false
+       form_element_pointer = null
+       temporary_buffer = null
+       pending_table_character_tokens = []
+       head_element_pointer = null
+       flag_fragment_parsing = false # parser originally created as part of the html fragment parsing algorithm (fragment case)
+       context_element = null # FIXME initialize from args.fragment http://www.w3.org/TR/html5/syntax.html#parsing-html-fragments
 
        # tokenizer initialization
        tok_state = tok_state_data
 
+       # text pre-processing
+       # FIXME http://www.w3.org/TR/html5/syntax.html#preprocessing-the-input-stream
+       txt = txt.replace(new RegExp("\u0000", 'g'), "\ufffd") # fixfull spec doesn't say this
+       txt = txt.replace(new RegExp("\r\n", 'g'), "\n") # fixfull spec doesn't say this
+       txt = txt.replace(new RegExp("\r", 'g'), "\n") # fixfull spec doesn't say this
+
+       if args.name is "plain-text-unsafe.dat #4"
+               console.log "hi"
        # proccess input
-       while cur < txt.length
+       # http://www.w3.org/TR/html5/syntax.html#tree-construction
+       while flag_parsing
                t = tok_state()
                if t?
-                       tree_state t
+                       process_token t
+                       # fixfull parse error if has self-closing flag, but it wasn't acknolwedged
+       return doc.children
 
-       return tree
+serialize_els = (els, shallow, show_ids) ->
+       serialized = ''
+       sep = ''
+       for t in els
+               serialized += sep
+               sep = ','
+               serialized += t.serialize shallow, show_ids
+       return serialized
 
-# everything below is tests on the above
-test_equals = (description, fn, args..., expected_output) ->
-       output = fn.apply this, args
-       if output is expected_output
-               console.log "passed: #{description}."
-       else
-               console.log "FAILED: #{description}. Expected: #{expected_output}, actual: #{output}"
-html_to_json = (html) ->
-       return JSON.stringify parse_html html
-test_equals "empty", html_to_json, "", '[]'
-test_equals "just text", html_to_json, "abc", '[[1,"abc"]]'
-test_equals "named entity", html_to_json, "a&amp;1234", '[[1,"a&1234"]]'
-test_equals "broken named character references", html_to_json, "1&amp2&&amp;3&aabbcc;", '[[1,"1&2&&3&aabbcc;"]]'
-test_equals "numbered entity overrides", html_to_json, "1&#X80&#x80; &#x83", '[[1,"1€€ ƒ"]]'
-test_equals "open_tag", html_to_json, "foo<span>bar", '[[1,"foo"],[0,"span",{},[[1,"bar"]]]]'
+module.exports.parse_html = parse_html
+module.exports.debug_log_reset = debug_log_reset
+module.exports.debug_log_each = debug_log_each
+module.exports.TYPE_TAG = TYPE_TAG
+module.exports.TYPE_TEXT = TYPE_TEXT
+module.exports.TYPE_COMMENT = TYPE_COMMENT
+module.exports.TYPE_DOCTYPE = TYPE_DOCTYPE
+module.exports.NS_HTML = NS_HTML
+module.exports.NS_MATHML = NS_MATHML
+module.exports.NS_SVG = NS_SVG