from . import _inputstream from . import _tokenizer from . import treebuilders from .treebuilders.base import Marker from . import _utils from .constants import ( spaceCharacters, asciiUpper2Lower, specialElements, headingElements, cdataElements, rcdataElements, tokenTypes, namespaces, htmlIntegrationPointElements, mathmlTextIntegrationPointElements, adjustForeignAttributes as adjustForeignAttributesMap, adjustMathMLAttributes, adjustSVGAttributes, E, _ReparseException ) def parse(doc, treebuilder="etree", namespaceHTMLElements=True, **kwargs): """Parse an HTML document as a string or file-like object into a tree :arg doc: the document to parse as a string or file-like object :arg treebuilder: the treebuilder to use when parsing :arg namespaceHTMLElements: whether or not to namespace HTML elements :returns: parsed tree Example: >>> from html5rdf.html5parser import parse >>> parse('

This is a doc

') """ tb = treebuilders.getTreeBuilder(treebuilder) p = HTMLParser(tb, namespaceHTMLElements=namespaceHTMLElements) return p.parse(doc, **kwargs) def parseFragment(doc, container="div", treebuilder="etree", namespaceHTMLElements=True, **kwargs): """Parse an HTML fragment as a string or file-like object into a tree :arg doc: the fragment to parse as a string or file-like object :arg container: the container context to parse the fragment in :arg treebuilder: the treebuilder to use when parsing :arg namespaceHTMLElements: whether or not to namespace HTML elements :returns: parsed tree Example: >>> from html5rdf.html5libparser import parseFragment >>> parseFragment('this is a fragment') """ tb = treebuilders.getTreeBuilder(treebuilder) p = HTMLParser(tb, namespaceHTMLElements=namespaceHTMLElements) return p.parseFragment(doc, container=container, **kwargs) class HTMLParser: """HTML parser Generates a tree structure from a stream of (possibly malformed) HTML. """ def __init__(self, tree=None, strict=False, namespaceHTMLElements=True, debug=False): """ :arg tree: a treebuilder class controlling the type of tree that will be returned. Built in treebuilders can be accessed through html5lib.treebuilders.getTreeBuilder(treeType) :arg strict: raise an exception when a parse error is encountered :arg namespaceHTMLElements: whether or not to namespace HTML elements :arg debug: whether or not to enable debug mode which logs things Example: >>> from html5rdf.html5parser import HTMLParser >>> parser = HTMLParser() # generates parser with etree builder >>> parser = HTMLParser('lxml', strict=True) # generates parser with lxml builder which is strict """ # Raise an exception on the first error encountered self.strict = strict self.debug = debug if tree is None: tree = treebuilders.getTreeBuilder("etree") elif isinstance(tree, str): tree = treebuilders.getTreeBuilder(tree) self.tree = tree(namespaceHTMLElements) self.errors = [] self.phases = {name: cls(self, self.tree) for name, cls in _phases.items()} def _parse(self, stream, innerHTML=False, container="div", scripting=False, **kwargs): self.innerHTMLMode = innerHTML self.container = container self.scripting = scripting self.tokenizer = _tokenizer.HTMLTokenizer(stream, parser=self, **kwargs) self.reset() try: self.mainLoop() except _ReparseException: self.reset() self.mainLoop() def reset(self): self.tree.reset() self.firstStartTag = False self.errors = [] self.log = [] # only used with debug mode # "quirks" / "limited quirks" / "no quirks" self.compatMode = "no quirks" if self.innerHTMLMode: self.innerHTML = self.container.lower() if self.innerHTML in cdataElements: self.tokenizer.state = self.tokenizer.rcdataState elif self.innerHTML in rcdataElements: self.tokenizer.state = self.tokenizer.rawtextState elif self.innerHTML == 'plaintext': self.tokenizer.state = self.tokenizer.plaintextState else: # state already is data state # self.tokenizer.state = self.tokenizer.dataState pass self.phase = self.phases["beforeHtml"] self.phase.insertHtmlElement() self.resetInsertionMode() else: self.innerHTML = False # pylint:disable=redefined-variable-type self.phase = self.phases["initial"] self.lastPhase = None self.beforeRCDataPhase = None self.framesetOK = True @property def documentEncoding(self): """Name of the character encoding that was used to decode the input stream, or :obj:`None` if that is not determined yet """ if not hasattr(self, 'tokenizer'): return None return self.tokenizer.stream.charEncoding[0].name def isHTMLIntegrationPoint(self, element): if (element.name == "annotation-xml" and element.namespace == namespaces["mathml"]): return ("encoding" in element.attributes and element.attributes["encoding"].translate( asciiUpper2Lower) in ("text/html", "application/xhtml+xml")) else: return (element.namespace, element.name) in htmlIntegrationPointElements def isMathMLTextIntegrationPoint(self, element): return (element.namespace, element.name) in mathmlTextIntegrationPointElements def mainLoop(self): CharactersToken = tokenTypes["Characters"] SpaceCharactersToken = tokenTypes["SpaceCharacters"] StartTagToken = tokenTypes["StartTag"] EndTagToken = tokenTypes["EndTag"] CommentToken = tokenTypes["Comment"] DoctypeToken = tokenTypes["Doctype"] ParseErrorToken = tokenTypes["ParseError"] type_names = {value: key for key, value in tokenTypes.items()} debug = self.debug for token in self.tokenizer: prev_token = None new_token = token while new_token is not None: prev_token = new_token currentNode = self.tree.openElements[-1] if self.tree.openElements else None currentNodeNamespace = currentNode.namespace if currentNode else None currentNodeName = currentNode.name if currentNode else None type = new_token["type"] if type == ParseErrorToken: self.parseError(new_token["data"], new_token.get("datavars", {})) new_token = None else: if (len(self.tree.openElements) == 0 or currentNodeNamespace == self.tree.defaultNamespace or (self.isMathMLTextIntegrationPoint(currentNode) and ((type == StartTagToken and token["name"] not in frozenset(["mglyph", "malignmark"])) or type in (CharactersToken, SpaceCharactersToken))) or (currentNodeNamespace == namespaces["mathml"] and currentNodeName == "annotation-xml" and type == StartTagToken and token["name"] == "svg") or (self.isHTMLIntegrationPoint(currentNode) and type in (StartTagToken, CharactersToken, SpaceCharactersToken))): phase = self.phase else: phase = self.phases["inForeignContent"] if debug: info = {"type": type_names[type]} if type in (StartTagToken, EndTagToken): info["name"] = new_token['name'] self.log.append((self.tokenizer.state.__name__, self.phase.__class__.__name__, phase.__class__.__name__, "process" + info["type"], info)) if type == CharactersToken: new_token = phase.processCharacters(new_token) elif type == SpaceCharactersToken: new_token = phase.processSpaceCharacters(new_token) elif type == StartTagToken: new_token = phase.processStartTag(new_token) elif type == EndTagToken: new_token = phase.processEndTag(new_token) elif type == CommentToken: new_token = phase.processComment(new_token) elif type == DoctypeToken: new_token = phase.processDoctype(new_token) if (type == StartTagToken and prev_token["selfClosing"] and not prev_token["selfClosingAcknowledged"]): self.parseError("non-void-element-with-trailing-solidus", {"name": prev_token["name"]}) # When the loop finishes it's EOF reprocess = True phases = [] while reprocess: phases.append(self.phase) reprocess = self.phase.processEOF() if reprocess: assert self.phase not in phases def parse(self, stream, *args, **kwargs): """Parse a HTML document into a well-formed tree :arg stream: a file-like object or string containing the HTML to be parsed The optional encoding parameter must be a string that indicates the encoding. If specified, that encoding will be used, regardless of any BOM or later declaration (such as in a meta element). :arg scripting: treat noscript elements as if JavaScript was turned on :returns: parsed tree Example: >>> from html5rdf.html5parser import HTMLParser >>> parser = HTMLParser() >>> parser.parse('

This is a doc

') """ self._parse(stream, False, None, *args, **kwargs) return self.tree.getDocument() def parseFragment(self, stream, *args, **kwargs): """Parse a HTML fragment into a well-formed tree fragment :arg container: name of the element we're setting the innerHTML property if set to None, default to 'div' :arg stream: a file-like object or string containing the HTML to be parsed The optional encoding parameter must be a string that indicates the encoding. If specified, that encoding will be used, regardless of any BOM or later declaration (such as in a meta element) :arg scripting: treat noscript elements as if JavaScript was turned on :returns: parsed tree Example: >>> from html5rdf.html5libparser import HTMLParser >>> parser = HTMLParser() >>> parser.parseFragment('this is a fragment') """ self._parse(stream, True, *args, **kwargs) return self.tree.getFragment() def parseError(self, errorcode="XXX-undefined-error", datavars=None): # XXX The idea is to make errorcode mandatory. if datavars is None: datavars = {} self.errors.append((self.tokenizer.stream.position(), errorcode, datavars)) if self.strict: raise ParseError(E[errorcode] % datavars) def adjustMathMLAttributes(self, token): adjust_attributes(token, adjustMathMLAttributes) def adjustSVGAttributes(self, token): adjust_attributes(token, adjustSVGAttributes) def adjustForeignAttributes(self, token): adjust_attributes(token, adjustForeignAttributesMap) def reparseTokenNormal(self, token): # pylint:disable=unused-argument self.parser.phase() def resetInsertionMode(self): # The name of this method is mostly historical. (It's also used in the # specification.) last = False newModes = { "select": "inSelect", "td": "inCell", "th": "inCell", "tr": "inRow", "tbody": "inTableBody", "thead": "inTableBody", "tfoot": "inTableBody", "caption": "inCaption", "colgroup": "inColumnGroup", "table": "inTable", "head": "inBody", "body": "inBody", "frameset": "inFrameset", "html": "beforeHead" } for node in self.tree.openElements[::-1]: nodeName = node.name new_phase = None if node == self.tree.openElements[0]: assert self.innerHTML last = True nodeName = self.innerHTML # Check for conditions that should only happen in the innerHTML # case if nodeName in ("select", "colgroup", "head", "html"): assert self.innerHTML if not last and node.namespace != self.tree.defaultNamespace: continue if nodeName in newModes: new_phase = self.phases[newModes[nodeName]] break elif last: new_phase = self.phases["inBody"] break self.phase = new_phase def parseRCDataRawtext(self, token, contentType): # Generic RCDATA/RAWTEXT Parsing algorithm assert contentType in ("RAWTEXT", "RCDATA") self.tree.insertElement(token) if contentType == "RAWTEXT": self.tokenizer.state = self.tokenizer.rawtextState else: self.tokenizer.state = self.tokenizer.rcdataState self.originalPhase = self.phase self.phase = self.phases["text"] class Phase: """Base class for helper object that implements each phase of processing """ __slots__ = ("parser", "tree", "__startTagCache", "__endTagCache") def __init__(self, parser, tree): self.parser = parser self.tree = tree self.__startTagCache = {} self.__endTagCache = {} def processEOF(self): raise NotImplementedError def processComment(self, token): # For most phases the following is correct. Where it's not it will be # overridden. self.tree.insertComment(token, self.tree.openElements[-1]) def processDoctype(self, token): self.parser.parseError("unexpected-doctype") def processCharacters(self, token): self.tree.insertText(token["data"]) def processSpaceCharacters(self, token): self.tree.insertText(token["data"]) def processStartTag(self, token): # Note the caching is done here rather than BoundMethodDispatcher as doing it there # requires a circular reference to the Phase, and this ends up with a significant # (CPython 3.8) GC cost when parsing many short inputs name = token["name"] # In Py2, using `in` is quicker in general than try/except KeyError # In Py3, `in` is quicker when there are few cache hits (typically short inputs) if name in self.__startTagCache: func = self.__startTagCache[name] else: func = self.__startTagCache[name] = self.startTagHandler[name] # bound the cache size in case we get loads of unknown tags while len(self.__startTagCache) > len(self.startTagHandler) * 1.1: # this makes the eviction policy random on Py < 3.7 and FIFO >= 3.7 self.__startTagCache.pop(next(iter(self.__startTagCache))) return func(token) def startTagHtml(self, token): if not self.parser.firstStartTag and token["name"] == "html": self.parser.parseError("non-html-root") # XXX Need a check here to see if the first start tag token emitted is # this token... If it's not, invoke self.parser.parseError(). for attr, value in token["data"].items(): if attr not in self.tree.openElements[0].attributes: self.tree.openElements[0].attributes[attr] = value self.parser.firstStartTag = False def processEndTag(self, token): # Note the caching is done here rather than BoundMethodDispatcher as doing it there # requires a circular reference to the Phase, and this ends up with a significant # (CPython 3.8) GC cost when parsing many short inputs name = token["name"] # In Py2, using `in` is quicker in general than try/except KeyError # In Py3, `in` is quicker when there are few cache hits (typically short inputs) if name in self.__endTagCache: func = self.__endTagCache[name] else: func = self.__endTagCache[name] = self.endTagHandler[name] # bound the cache size in case we get loads of unknown tags while len(self.__endTagCache) > len(self.endTagHandler) * 1.1: # this makes the eviction policy random on Py < 3.7 and FIFO >= 3.7 self.__endTagCache.pop(next(iter(self.__endTagCache))) return func(token) class InitialPhase(Phase): __slots__ = tuple() def processSpaceCharacters(self, token): pass def processComment(self, token): self.tree.insertComment(token, self.tree.document) def processDoctype(self, token): name = token["name"] publicId = token["publicId"] systemId = token["systemId"] correct = token["correct"] if (name != "html" or publicId is not None or systemId is not None and systemId != "about:legacy-compat"): self.parser.parseError("unknown-doctype") if publicId is None: publicId = "" self.tree.insertDoctype(token) if publicId != "": publicId = publicId.translate(asciiUpper2Lower) if (not correct or token["name"] != "html" or publicId.startswith( ("+//silmaril//dtd html pro v0r11 19970101//", "-//advasoft ltd//dtd html 3.0 aswedit + extensions//", "-//as//dtd html 3.0 aswedit + extensions//", "-//ietf//dtd html 2.0 level 1//", "-//ietf//dtd html 2.0 level 2//", "-//ietf//dtd html 2.0 strict level 1//", "-//ietf//dtd html 2.0 strict level 2//", "-//ietf//dtd html 2.0 strict//", "-//ietf//dtd html 2.0//", "-//ietf//dtd html 2.1e//", "-//ietf//dtd html 3.0//", "-//ietf//dtd html 3.2 final//", "-//ietf//dtd html 3.2//", "-//ietf//dtd html 3//", "-//ietf//dtd html level 0//", "-//ietf//dtd html level 1//", "-//ietf//dtd html level 2//", "-//ietf//dtd html level 3//", "-//ietf//dtd html strict level 0//", "-//ietf//dtd html strict level 1//", "-//ietf//dtd html strict level 2//", "-//ietf//dtd html strict level 3//", "-//ietf//dtd html strict//", "-//ietf//dtd html//", "-//metrius//dtd metrius presentational//", "-//microsoft//dtd internet explorer 2.0 html strict//", "-//microsoft//dtd internet explorer 2.0 html//", "-//microsoft//dtd internet explorer 2.0 tables//", "-//microsoft//dtd internet explorer 3.0 html strict//", "-//microsoft//dtd internet explorer 3.0 html//", "-//microsoft//dtd internet explorer 3.0 tables//", "-//netscape comm. corp.//dtd html//", "-//netscape comm. corp.//dtd strict html//", "-//o'reilly and associates//dtd html 2.0//", "-//o'reilly and associates//dtd html extended 1.0//", "-//o'reilly and associates//dtd html extended relaxed 1.0//", "-//softquad software//dtd hotmetal pro 6.0::19990601::extensions to html 4.0//", "-//softquad//dtd hotmetal pro 4.0::19971010::extensions to html 4.0//", "-//spyglass//dtd html 2.0 extended//", "-//sq//dtd html 2.0 hotmetal + extensions//", "-//sun microsystems corp.//dtd hotjava html//", "-//sun microsystems corp.//dtd hotjava strict html//", "-//w3c//dtd html 3 1995-03-24//", "-//w3c//dtd html 3.2 draft//", "-//w3c//dtd html 3.2 final//", "-//w3c//dtd html 3.2//", "-//w3c//dtd html 3.2s draft//", "-//w3c//dtd html 4.0 frameset//", "-//w3c//dtd html 4.0 transitional//", "-//w3c//dtd html experimental 19960712//", "-//w3c//dtd html experimental 970421//", "-//w3c//dtd w3 html//", "-//w3o//dtd w3 html 3.0//", "-//webtechs//dtd mozilla html 2.0//", "-//webtechs//dtd mozilla html//")) or publicId in ("-//w3o//dtd w3 html strict 3.0//en//", "-/w3c/dtd html 4.0 transitional/en", "html") or publicId.startswith( ("-//w3c//dtd html 4.01 frameset//", "-//w3c//dtd html 4.01 transitional//")) and systemId is None or systemId and systemId.lower() == "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd"): self.parser.compatMode = "quirks" elif (publicId.startswith( ("-//w3c//dtd xhtml 1.0 frameset//", "-//w3c//dtd xhtml 1.0 transitional//")) or publicId.startswith( ("-//w3c//dtd html 4.01 frameset//", "-//w3c//dtd html 4.01 transitional//")) and systemId is not None): self.parser.compatMode = "limited quirks" self.parser.phase = self.parser.phases["beforeHtml"] def anythingElse(self): self.parser.compatMode = "quirks" self.parser.phase = self.parser.phases["beforeHtml"] def processCharacters(self, token): self.parser.parseError("expected-doctype-but-got-chars") self.anythingElse() return token def processStartTag(self, token): self.parser.parseError("expected-doctype-but-got-start-tag", {"name": token["name"]}) self.anythingElse() return token def processEndTag(self, token): self.parser.parseError("expected-doctype-but-got-end-tag", {"name": token["name"]}) self.anythingElse() return token def processEOF(self): self.parser.parseError("expected-doctype-but-got-eof") self.anythingElse() return True class BeforeHtmlPhase(Phase): __slots__ = tuple() # helper methods def insertHtmlElement(self): self.tree.insertRoot(impliedTagToken("html", "StartTag")) self.parser.phase = self.parser.phases["beforeHead"] # other def processEOF(self): self.insertHtmlElement() return True def processComment(self, token): self.tree.insertComment(token, self.tree.document) def processSpaceCharacters(self, token): pass def processCharacters(self, token): self.insertHtmlElement() return token def processStartTag(self, token): if token["name"] == "html": self.parser.firstStartTag = True self.insertHtmlElement() return token def processEndTag(self, token): if token["name"] not in ("head", "body", "html", "br"): self.parser.parseError("unexpected-end-tag-before-html", {"name": token["name"]}) else: self.insertHtmlElement() return token class BeforeHeadPhase(Phase): __slots__ = tuple() def processEOF(self): self.startTagHead(impliedTagToken("head", "StartTag")) return True def processSpaceCharacters(self, token): pass def processCharacters(self, token): self.startTagHead(impliedTagToken("head", "StartTag")) return token def startTagHtml(self, token): return self.parser.phases["inBody"].processStartTag(token) def startTagHead(self, token): self.tree.insertElement(token) self.tree.headPointer = self.tree.openElements[-1] self.parser.phase = self.parser.phases["inHead"] def startTagOther(self, token): self.startTagHead(impliedTagToken("head", "StartTag")) return token def endTagImplyHead(self, token): self.startTagHead(impliedTagToken("head", "StartTag")) return token def endTagOther(self, token): self.parser.parseError("end-tag-after-implied-root", {"name": token["name"]}) startTagHandler = _utils.MethodDispatcher([ ("html", startTagHtml), ("head", startTagHead) ]) startTagHandler.default = startTagOther endTagHandler = _utils.MethodDispatcher([ (("head", "body", "html", "br"), endTagImplyHead) ]) endTagHandler.default = endTagOther class InHeadPhase(Phase): __slots__ = tuple() # the real thing def processEOF(self): self.anythingElse() return True def processCharacters(self, token): self.anythingElse() return token def startTagHtml(self, token): return self.parser.phases["inBody"].processStartTag(token) def startTagHead(self, token): self.parser.parseError("two-heads-are-not-better-than-one") def startTagBaseLinkCommand(self, token): self.tree.insertElement(token) self.tree.openElements.pop() token["selfClosingAcknowledged"] = True def startTagMeta(self, token): self.tree.insertElement(token) self.tree.openElements.pop() token["selfClosingAcknowledged"] = True attributes = token["data"] if self.parser.tokenizer.stream.charEncoding[1] == "tentative": if "charset" in attributes: self.parser.tokenizer.stream.changeEncoding(attributes["charset"]) elif ("content" in attributes and "http-equiv" in attributes and attributes["http-equiv"].lower() == "content-type"): # Encoding it as UTF-8 here is a hack, as really we should pass # the abstract Unicode string, and just use the # ContentAttrParser on that, but using UTF-8 allows all chars # to be encoded and as a ASCII-superset works. data = _inputstream.EncodingBytes(attributes["content"].encode("utf-8")) parser = _inputstream.ContentAttrParser(data) codec = parser.parse() self.parser.tokenizer.stream.changeEncoding(codec) def startTagTitle(self, token): self.parser.parseRCDataRawtext(token, "RCDATA") def startTagNoFramesStyle(self, token): # Need to decide whether to implement the scripting-disabled case self.parser.parseRCDataRawtext(token, "RAWTEXT") def startTagNoscript(self, token): if self.parser.scripting: self.parser.parseRCDataRawtext(token, "RAWTEXT") else: self.tree.insertElement(token) self.parser.phase = self.parser.phases["inHeadNoscript"] def startTagScript(self, token): self.tree.insertElement(token) self.parser.tokenizer.state = self.parser.tokenizer.scriptDataState self.parser.originalPhase = self.parser.phase self.parser.phase = self.parser.phases["text"] def startTagOther(self, token): self.anythingElse() return token def endTagHead(self, token): node = self.parser.tree.openElements.pop() assert node.name == "head", "Expected head got %s" % node.name self.parser.phase = self.parser.phases["afterHead"] def endTagHtmlBodyBr(self, token): self.anythingElse() return token def endTagOther(self, token): self.parser.parseError("unexpected-end-tag", {"name": token["name"]}) def anythingElse(self): self.endTagHead(impliedTagToken("head")) startTagHandler = _utils.MethodDispatcher([ ("html", startTagHtml), ("title", startTagTitle), (("noframes", "style"), startTagNoFramesStyle), ("noscript", startTagNoscript), ("script", startTagScript), (("base", "basefont", "bgsound", "command", "link"), startTagBaseLinkCommand), ("meta", startTagMeta), ("head", startTagHead) ]) startTagHandler.default = startTagOther endTagHandler = _utils.MethodDispatcher([ ("head", endTagHead), (("br", "html", "body"), endTagHtmlBodyBr) ]) endTagHandler.default = endTagOther class InHeadNoscriptPhase(Phase): __slots__ = tuple() def processEOF(self): self.parser.parseError("eof-in-head-noscript") self.anythingElse() return True def processComment(self, token): return self.parser.phases["inHead"].processComment(token) def processCharacters(self, token): self.parser.parseError("char-in-head-noscript") self.anythingElse() return token def processSpaceCharacters(self, token): return self.parser.phases["inHead"].processSpaceCharacters(token) def startTagHtml(self, token): return self.parser.phases["inBody"].processStartTag(token) def startTagBaseLinkCommand(self, token): return self.parser.phases["inHead"].processStartTag(token) def startTagHeadNoscript(self, token): self.parser.parseError("unexpected-start-tag", {"name": token["name"]}) def startTagOther(self, token): self.parser.parseError("unexpected-inhead-noscript-tag", {"name": token["name"]}) self.anythingElse() return token def endTagNoscript(self, token): node = self.parser.tree.openElements.pop() assert node.name == "noscript", "Expected noscript got %s" % node.name self.parser.phase = self.parser.phases["inHead"] def endTagBr(self, token): self.parser.parseError("unexpected-inhead-noscript-tag", {"name": token["name"]}) self.anythingElse() return token def endTagOther(self, token): self.parser.parseError("unexpected-end-tag", {"name": token["name"]}) def anythingElse(self): # Caller must raise parse error first! self.endTagNoscript(impliedTagToken("noscript")) startTagHandler = _utils.MethodDispatcher([ ("html", startTagHtml), (("basefont", "bgsound", "link", "meta", "noframes", "style"), startTagBaseLinkCommand), (("head", "noscript"), startTagHeadNoscript), ]) startTagHandler.default = startTagOther endTagHandler = _utils.MethodDispatcher([ ("noscript", endTagNoscript), ("br", endTagBr), ]) endTagHandler.default = endTagOther class AfterHeadPhase(Phase): __slots__ = tuple() def processEOF(self): self.anythingElse() return True def processCharacters(self, token): self.anythingElse() return token def startTagHtml(self, token): return self.parser.phases["inBody"].processStartTag(token) def startTagBody(self, token): self.parser.framesetOK = False self.tree.insertElement(token) self.parser.phase = self.parser.phases["inBody"] def startTagFrameset(self, token): self.tree.insertElement(token) self.parser.phase = self.parser.phases["inFrameset"] def startTagFromHead(self, token): self.parser.parseError("unexpected-start-tag-out-of-my-head", {"name": token["name"]}) self.tree.openElements.append(self.tree.headPointer) self.parser.phases["inHead"].processStartTag(token) for node in self.tree.openElements[::-1]: if node.name == "head": self.tree.openElements.remove(node) break def startTagHead(self, token): self.parser.parseError("unexpected-start-tag", {"name": token["name"]}) def startTagOther(self, token): self.anythingElse() return token def endTagHtmlBodyBr(self, token): self.anythingElse() return token def endTagOther(self, token): self.parser.parseError("unexpected-end-tag", {"name": token["name"]}) def anythingElse(self): self.tree.insertElement(impliedTagToken("body", "StartTag")) self.parser.phase = self.parser.phases["inBody"] self.parser.framesetOK = True startTagHandler = _utils.MethodDispatcher([ ("html", startTagHtml), ("body", startTagBody), ("frameset", startTagFrameset), (("base", "basefont", "bgsound", "link", "meta", "noframes", "script", "style", "title"), startTagFromHead), ("head", startTagHead) ]) startTagHandler.default = startTagOther endTagHandler = _utils.MethodDispatcher([(("body", "html", "br"), endTagHtmlBodyBr)]) endTagHandler.default = endTagOther class InBodyPhase(Phase): # http://www.whatwg.org/specs/web-apps/current-work/#parsing-main-inbody # the really-really-really-very crazy mode __slots__ = ("processSpaceCharacters",) def __init__(self, *args, **kwargs): super(InBodyPhase, self).__init__(*args, **kwargs) # Set this to the default handler self.processSpaceCharacters = self.processSpaceCharactersNonPre def isMatchingFormattingElement(self, node1, node2): return (node1.name == node2.name and node1.namespace == node2.namespace and node1.attributes == node2.attributes) # helper def addFormattingElement(self, token): self.tree.insertElement(token) element = self.tree.openElements[-1] matchingElements = [] for node in self.tree.activeFormattingElements[::-1]: if node is Marker: break elif self.isMatchingFormattingElement(node, element): matchingElements.append(node) assert len(matchingElements) <= 3 if len(matchingElements) == 3: self.tree.activeFormattingElements.remove(matchingElements[-1]) self.tree.activeFormattingElements.append(element) # the real deal def processEOF(self): allowed_elements = frozenset(("dd", "dt", "li", "p", "tbody", "td", "tfoot", "th", "thead", "tr", "body", "html")) for node in self.tree.openElements[::-1]: if node.name not in allowed_elements: self.parser.parseError("expected-closing-tag-but-got-eof") break # Stop parsing def processSpaceCharactersDropNewline(self, token): # Sometimes (start of

, , and  blocks) we
        # want to drop leading newlines
        data = token["data"]
        self.processSpaceCharacters = self.processSpaceCharactersNonPre
        if (data.startswith("\n") and
            self.tree.openElements[-1].name in ("pre", "listing", "textarea") and
                not self.tree.openElements[-1].hasContent()):
            data = data[1:]
        if data:
            self.tree.reconstructActiveFormattingElements()
            self.tree.insertText(data)

    def processCharacters(self, token):
        if token["data"] == "\u0000":
            # The tokenizer should always emit null on its own
            return
        self.tree.reconstructActiveFormattingElements()
        self.tree.insertText(token["data"])
        # This must be bad for performance
        if (self.parser.framesetOK and
            any(char not in spaceCharacters
                for char in token["data"])):
            self.parser.framesetOK = False

    def processSpaceCharactersNonPre(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.tree.insertText(token["data"])

    def startTagProcessInHead(self, token):
        return self.parser.phases["inHead"].processStartTag(token)

    def startTagBody(self, token):
        self.parser.parseError("unexpected-start-tag", {"name": "body"})
        if (len(self.tree.openElements) == 1 or
                self.tree.openElements[1].name != "body"):
            assert self.parser.innerHTML
        else:
            self.parser.framesetOK = False
            for attr, value in token["data"].items():
                if attr not in self.tree.openElements[1].attributes:
                    self.tree.openElements[1].attributes[attr] = value

    def startTagFrameset(self, token):
        self.parser.parseError("unexpected-start-tag", {"name": "frameset"})
        if (len(self.tree.openElements) == 1 or self.tree.openElements[1].name != "body"):
            assert self.parser.innerHTML
        elif not self.parser.framesetOK:
            pass
        else:
            if self.tree.openElements[1].parent:
                self.tree.openElements[1].parent.removeChild(self.tree.openElements[1])
            while self.tree.openElements[-1].name != "html":
                self.tree.openElements.pop()
            self.tree.insertElement(token)
            self.parser.phase = self.parser.phases["inFrameset"]

    def startTagCloseP(self, token):
        if self.tree.elementInScope("p", variant="button"):
            self.endTagP(impliedTagToken("p"))
        self.tree.insertElement(token)

    def startTagPreListing(self, token):
        if self.tree.elementInScope("p", variant="button"):
            self.endTagP(impliedTagToken("p"))
        self.tree.insertElement(token)
        self.parser.framesetOK = False
        self.processSpaceCharacters = self.processSpaceCharactersDropNewline

    def startTagForm(self, token):
        if self.tree.formPointer:
            self.parser.parseError("unexpected-start-tag", {"name": "form"})
        else:
            if self.tree.elementInScope("p", variant="button"):
                self.endTagP(impliedTagToken("p"))
            self.tree.insertElement(token)
            self.tree.formPointer = self.tree.openElements[-1]

    def startTagListItem(self, token):
        self.parser.framesetOK = False

        stopNamesMap = {"li": ["li"],
                        "dt": ["dt", "dd"],
                        "dd": ["dt", "dd"]}
        stopNames = stopNamesMap[token["name"]]
        for node in reversed(self.tree.openElements):
            if node.name in stopNames:
                self.parser.phase.processEndTag(
                    impliedTagToken(node.name, "EndTag"))
                break
            if (node.nameTuple in specialElements and
                    node.name not in ("address", "div", "p")):
                break

        if self.tree.elementInScope("p", variant="button"):
            self.parser.phase.processEndTag(
                impliedTagToken("p", "EndTag"))

        self.tree.insertElement(token)

    def startTagPlaintext(self, token):
        if self.tree.elementInScope("p", variant="button"):
            self.endTagP(impliedTagToken("p"))
        self.tree.insertElement(token)
        self.parser.tokenizer.state = self.parser.tokenizer.plaintextState

    def startTagHeading(self, token):
        if self.tree.elementInScope("p", variant="button"):
            self.endTagP(impliedTagToken("p"))
        if self.tree.openElements[-1].name in headingElements:
            self.parser.parseError("unexpected-start-tag", {"name": token["name"]})
            self.tree.openElements.pop()
        self.tree.insertElement(token)

    def startTagA(self, token):
        afeAElement = self.tree.elementInActiveFormattingElements("a")
        if afeAElement:
            self.parser.parseError("unexpected-start-tag-implies-end-tag",
                                   {"startName": "a", "endName": "a"})
            self.endTagFormatting(impliedTagToken("a"))
            if afeAElement in self.tree.openElements:
                self.tree.openElements.remove(afeAElement)
            if afeAElement in self.tree.activeFormattingElements:
                self.tree.activeFormattingElements.remove(afeAElement)
        self.tree.reconstructActiveFormattingElements()
        self.addFormattingElement(token)

    def startTagFormatting(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.addFormattingElement(token)

    def startTagNobr(self, token):
        self.tree.reconstructActiveFormattingElements()
        if self.tree.elementInScope("nobr"):
            self.parser.parseError("unexpected-start-tag-implies-end-tag",
                                   {"startName": "nobr", "endName": "nobr"})
            self.processEndTag(impliedTagToken("nobr"))
            # XXX Need tests that trigger the following
            self.tree.reconstructActiveFormattingElements()
        self.addFormattingElement(token)

    def startTagButton(self, token):
        if self.tree.elementInScope("button"):
            self.parser.parseError("unexpected-start-tag-implies-end-tag",
                                   {"startName": "button", "endName": "button"})
            self.processEndTag(impliedTagToken("button"))
            return token
        else:
            self.tree.reconstructActiveFormattingElements()
            self.tree.insertElement(token)
            self.parser.framesetOK = False

    def startTagAppletMarqueeObject(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.tree.insertElement(token)
        self.tree.activeFormattingElements.append(Marker)
        self.parser.framesetOK = False

    def startTagXmp(self, token):
        if self.tree.elementInScope("p", variant="button"):
            self.endTagP(impliedTagToken("p"))
        self.tree.reconstructActiveFormattingElements()
        self.parser.framesetOK = False
        self.parser.parseRCDataRawtext(token, "RAWTEXT")

    def startTagTable(self, token):
        if self.parser.compatMode != "quirks":
            if self.tree.elementInScope("p", variant="button"):
                self.processEndTag(impliedTagToken("p"))
        self.tree.insertElement(token)
        self.parser.framesetOK = False
        self.parser.phase = self.parser.phases["inTable"]

    def startTagVoidFormatting(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.tree.insertElement(token)
        self.tree.openElements.pop()
        token["selfClosingAcknowledged"] = True
        self.parser.framesetOK = False

    def startTagInput(self, token):
        framesetOK = self.parser.framesetOK
        self.startTagVoidFormatting(token)
        if ("type" in token["data"] and
                token["data"]["type"].translate(asciiUpper2Lower) == "hidden"):
            # input type=hidden doesn't change framesetOK
            self.parser.framesetOK = framesetOK

    def startTagParamSource(self, token):
        self.tree.insertElement(token)
        self.tree.openElements.pop()
        token["selfClosingAcknowledged"] = True

    def startTagHr(self, token):
        if self.tree.elementInScope("p", variant="button"):
            self.endTagP(impliedTagToken("p"))
        self.tree.insertElement(token)
        self.tree.openElements.pop()
        token["selfClosingAcknowledged"] = True
        self.parser.framesetOK = False

    def startTagImage(self, token):
        # No really...
        self.parser.parseError("unexpected-start-tag-treated-as",
                               {"originalName": "image", "newName": "img"})
        self.processStartTag(impliedTagToken("img", "StartTag",
                                             attributes=token["data"],
                                             selfClosing=token["selfClosing"]))

    def startTagIsIndex(self, token):
        self.parser.parseError("deprecated-tag", {"name": "isindex"})
        if self.tree.formPointer:
            return
        form_attrs = {}
        if "action" in token["data"]:
            form_attrs["action"] = token["data"]["action"]
        self.processStartTag(impliedTagToken("form", "StartTag",
                                             attributes=form_attrs))
        self.processStartTag(impliedTagToken("hr", "StartTag"))
        self.processStartTag(impliedTagToken("label", "StartTag"))
        # XXX Localization ...
        if "prompt" in token["data"]:
            prompt = token["data"]["prompt"]
        else:
            prompt = "This is a searchable index. Enter search keywords: "
        self.processCharacters(
            {"type": tokenTypes["Characters"], "data": prompt})
        attributes = token["data"].copy()
        if "action" in attributes:
            del attributes["action"]
        if "prompt" in attributes:
            del attributes["prompt"]
        attributes["name"] = "isindex"
        self.processStartTag(impliedTagToken("input", "StartTag",
                                             attributes=attributes,
                                             selfClosing=token["selfClosing"]))
        self.processEndTag(impliedTagToken("label"))
        self.processStartTag(impliedTagToken("hr", "StartTag"))
        self.processEndTag(impliedTagToken("form"))

    def startTagTextarea(self, token):
        self.tree.insertElement(token)
        self.parser.tokenizer.state = self.parser.tokenizer.rcdataState
        self.processSpaceCharacters = self.processSpaceCharactersDropNewline
        self.parser.framesetOK = False

    def startTagIFrame(self, token):
        self.parser.framesetOK = False
        self.startTagRawtext(token)

    def startTagNoscript(self, token):
        if self.parser.scripting:
            self.startTagRawtext(token)
        else:
            self.startTagOther(token)

    def startTagRawtext(self, token):
        """iframe, noembed noframes, noscript(if scripting enabled)"""
        self.parser.parseRCDataRawtext(token, "RAWTEXT")

    def startTagOpt(self, token):
        if self.tree.openElements[-1].name == "option":
            self.parser.phase.processEndTag(impliedTagToken("option"))
        self.tree.reconstructActiveFormattingElements()
        self.parser.tree.insertElement(token)

    def startTagSelect(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.tree.insertElement(token)
        self.parser.framesetOK = False
        if self.parser.phase in (self.parser.phases["inTable"],
                                 self.parser.phases["inCaption"],
                                 self.parser.phases["inColumnGroup"],
                                 self.parser.phases["inTableBody"],
                                 self.parser.phases["inRow"],
                                 self.parser.phases["inCell"]):
            self.parser.phase = self.parser.phases["inSelectInTable"]
        else:
            self.parser.phase = self.parser.phases["inSelect"]

    def startTagRpRt(self, token):
        if self.tree.elementInScope("ruby"):
            self.tree.generateImpliedEndTags()
            if self.tree.openElements[-1].name != "ruby":
                self.parser.parseError()
        self.tree.insertElement(token)

    def startTagMath(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.parser.adjustMathMLAttributes(token)
        self.parser.adjustForeignAttributes(token)
        token["namespace"] = namespaces["mathml"]
        self.tree.insertElement(token)
        # Need to get the parse error right for the case where the token
        # has a namespace not equal to the xmlns attribute
        if token["selfClosing"]:
            self.tree.openElements.pop()
            token["selfClosingAcknowledged"] = True

    def startTagSvg(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.parser.adjustSVGAttributes(token)
        self.parser.adjustForeignAttributes(token)
        token["namespace"] = namespaces["svg"]
        self.tree.insertElement(token)
        # Need to get the parse error right for the case where the token
        # has a namespace not equal to the xmlns attribute
        if token["selfClosing"]:
            self.tree.openElements.pop()
            token["selfClosingAcknowledged"] = True

    def startTagMisplaced(self, token):
        """ Elements that should be children of other elements that have a
        different insertion mode; here they are ignored
        "caption", "col", "colgroup", "frame", "frameset", "head",
        "option", "optgroup", "tbody", "td", "tfoot", "th", "thead",
        "tr", "noscript"
        """
        self.parser.parseError("unexpected-start-tag-ignored", {"name": token["name"]})

    def startTagOther(self, token):
        self.tree.reconstructActiveFormattingElements()
        self.tree.insertElement(token)

    def endTagP(self, token):
        if not self.tree.elementInScope("p", variant="button"):
            self.startTagCloseP(impliedTagToken("p", "StartTag"))
            self.parser.parseError("unexpected-end-tag", {"name": "p"})
            self.endTagP(impliedTagToken("p", "EndTag"))
        else:
            self.tree.generateImpliedEndTags("p")
            if self.tree.openElements[-1].name != "p":
                self.parser.parseError("unexpected-end-tag", {"name": "p"})
            node = self.tree.openElements.pop()
            while node.name != "p":
                node = self.tree.openElements.pop()

    def endTagBody(self, token):
        if not self.tree.elementInScope("body"):
            self.parser.parseError()
            return
        elif self.tree.openElements[-1].name != "body":
            for node in self.tree.openElements[2:]:
                if node.name not in frozenset(("dd", "dt", "li", "optgroup",
                                               "option", "p", "rp", "rt",
                                               "tbody", "td", "tfoot",
                                               "th", "thead", "tr", "body",
                                               "html")):
                    # Not sure this is the correct name for the parse error
                    self.parser.parseError(
                        "expected-one-end-tag-but-got-another",
                        {"gotName": "body", "expectedName": node.name})
                    break
        self.parser.phase = self.parser.phases["afterBody"]

    def endTagHtml(self, token):
        # We repeat the test for the body end tag token being ignored here
        if self.tree.elementInScope("body"):
            self.endTagBody(impliedTagToken("body"))
            return token

    def endTagBlock(self, token):
        # Put us back in the right whitespace handling mode
        if token["name"] == "pre":
            self.processSpaceCharacters = self.processSpaceCharactersNonPre
        inScope = self.tree.elementInScope(token["name"])
        if inScope:
            self.tree.generateImpliedEndTags()
        if self.tree.openElements[-1].name != token["name"]:
            self.parser.parseError("end-tag-too-early", {"name": token["name"]})
        if inScope:
            node = self.tree.openElements.pop()
            while node.name != token["name"]:
                node = self.tree.openElements.pop()

    def endTagForm(self, token):
        node = self.tree.formPointer
        self.tree.formPointer = None
        if node is None or not self.tree.elementInScope(node):
            self.parser.parseError("unexpected-end-tag",
                                   {"name": "form"})
        else:
            self.tree.generateImpliedEndTags()
            if self.tree.openElements[-1] != node:
                self.parser.parseError("end-tag-too-early-ignored",
                                       {"name": "form"})
            self.tree.openElements.remove(node)

    def endTagListItem(self, token):
        if token["name"] == "li":
            variant = "list"
        else:
            variant = None
        if not self.tree.elementInScope(token["name"], variant=variant):
            self.parser.parseError("unexpected-end-tag", {"name": token["name"]})
        else:
            self.tree.generateImpliedEndTags(exclude=token["name"])
            if self.tree.openElements[-1].name != token["name"]:
                self.parser.parseError(
                    "end-tag-too-early",
                    {"name": token["name"]})
            node = self.tree.openElements.pop()
            while node.name != token["name"]:
                node = self.tree.openElements.pop()

    def endTagHeading(self, token):
        for item in headingElements:
            if self.tree.elementInScope(item):
                self.tree.generateImpliedEndTags()
                break
        if self.tree.openElements[-1].name != token["name"]:
            self.parser.parseError("end-tag-too-early", {"name": token["name"]})

        for item in headingElements:
            if self.tree.elementInScope(item):
                item = self.tree.openElements.pop()
                while item.name not in headingElements:
                    item = self.tree.openElements.pop()
                break

    def endTagFormatting(self, token):
        """The much-feared adoption agency algorithm"""
        # http://svn.whatwg.org/webapps/complete.html#adoptionAgency revision 7867
        # XXX Better parseError messages appreciated.

        # Step 1
        outerLoopCounter = 0

        # Step 2
        while outerLoopCounter < 8:

            # Step 3
            outerLoopCounter += 1

            # Step 4:

            # Let the 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 same tag name as the token.
            formattingElement = self.tree.elementInActiveFormattingElements(
                token["name"])
            if (not formattingElement or
                (formattingElement in self.tree.openElements and
                 not self.tree.elementInScope(formattingElement.name))):
                # If there is no such node, then abort these steps
                # and instead act as described in the "any other
                # end tag" entry below.
                self.endTagOther(token)
                return

            # Otherwise, if there is such a node, but that node is
            # not in the stack of open elements, then this is a
            # parse error; remove the element from the list, and
            # abort these steps.
            elif formattingElement not in self.tree.openElements:
                self.parser.parseError("adoption-agency-1.2", {"name": token["name"]})
                self.tree.activeFormattingElements.remove(formattingElement)
                return

            # Otherwise, if there is such a node, and that node is
            # also in the stack of open elements, but the element
            # is not in scope, then this is a parse error; ignore
            # the token, and abort these steps.
            elif not self.tree.elementInScope(formattingElement.name):
                self.parser.parseError("adoption-agency-4.4", {"name": token["name"]})
                return

            # Otherwise, there is a formatting element and that
            # element is in the stack and is in scope. If the
            # element is not the current node, this is a parse
            # error. In any case, proceed with the algorithm as
            # written in the following steps.
            else:
                if formattingElement != self.tree.openElements[-1]:
                    self.parser.parseError("adoption-agency-1.3", {"name": token["name"]})

            # Step 5:

            # Let the furthest block be the topmost node in the
            # stack of open elements that is lower in the stack
            # than the formatting element, and is an element in
            # the special category. There might not be one.
            afeIndex = self.tree.openElements.index(formattingElement)
            furthestBlock = None
            for element in self.tree.openElements[afeIndex:]:
                if element.nameTuple in specialElements:
                    furthestBlock = element
                    break

            # Step 6:

            # 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 the formatting element, then remove the
            # formatting element from the list of active
            # formatting elements, and finally abort these steps.
            if furthestBlock is None:
                element = self.tree.openElements.pop()
                while element != formattingElement:
                    element = self.tree.openElements.pop()
                self.tree.activeFormattingElements.remove(element)
                return

            # Step 7
            commonAncestor = self.tree.openElements[afeIndex - 1]

            # Step 8:
            # The bookmark is supposed to help us identify where to reinsert
            # nodes in step 15. We have to ensure that we reinsert nodes after
            # the node before the active formatting element. Note the bookmark
            # can move in step 9.7
            bookmark = self.tree.activeFormattingElements.index(formattingElement)

            # Step 9
            lastNode = node = furthestBlock
            innerLoopCounter = 0

            index = self.tree.openElements.index(node)
            while innerLoopCounter < 3:
                innerLoopCounter += 1
                # Node is element before node in open elements
                index -= 1
                node = self.tree.openElements[index]
                if node not in self.tree.activeFormattingElements:
                    self.tree.openElements.remove(node)
                    continue
                # Step 9.6
                if node == formattingElement:
                    break
                # Step 9.7
                if lastNode == furthestBlock:
                    bookmark = self.tree.activeFormattingElements.index(node) + 1
                # Step 9.8
                clone = node.cloneNode()
                # Replace node with clone
                self.tree.activeFormattingElements[
                    self.tree.activeFormattingElements.index(node)] = clone
                self.tree.openElements[
                    self.tree.openElements.index(node)] = clone
                node = clone
                # Step 9.9
                # Remove lastNode from its parents, if any
                if lastNode.parent:
                    lastNode.parent.removeChild(lastNode)
                node.appendChild(lastNode)
                # Step 9.10
                lastNode = node

            # Step 10
            # Foster parent lastNode if commonAncestor is a
            # table, tbody, tfoot, thead, or tr we need to foster
            # parent the lastNode
            if lastNode.parent:
                lastNode.parent.removeChild(lastNode)

            if commonAncestor.name in frozenset(("table", "tbody", "tfoot", "thead", "tr")):
                parent, insertBefore = self.tree.getTableMisnestedNodePosition()
                parent.insertBefore(lastNode, insertBefore)
            else:
                commonAncestor.appendChild(lastNode)

            # Step 11
            clone = formattingElement.cloneNode()

            # Step 12
            furthestBlock.reparentChildren(clone)

            # Step 13
            furthestBlock.appendChild(clone)

            # Step 14
            self.tree.activeFormattingElements.remove(formattingElement)
            self.tree.activeFormattingElements.insert(bookmark, clone)

            # Step 15
            self.tree.openElements.remove(formattingElement)
            self.tree.openElements.insert(
                self.tree.openElements.index(furthestBlock) + 1, clone)

    def endTagAppletMarqueeObject(self, token):
        if self.tree.elementInScope(token["name"]):
            self.tree.generateImpliedEndTags()
        if self.tree.openElements[-1].name != token["name"]:
            self.parser.parseError("end-tag-too-early", {"name": token["name"]})

        if self.tree.elementInScope(token["name"]):
            element = self.tree.openElements.pop()
            while element.name != token["name"]:
                element = self.tree.openElements.pop()
            self.tree.clearActiveFormattingElements()

    def endTagBr(self, token):
        self.parser.parseError("unexpected-end-tag-treated-as",
                               {"originalName": "br", "newName": "br element"})
        self.tree.reconstructActiveFormattingElements()
        self.tree.insertElement(impliedTagToken("br", "StartTag"))
        self.tree.openElements.pop()

    def endTagOther(self, token):
        for node in self.tree.openElements[::-1]:
            if node.name == token["name"]:
                self.tree.generateImpliedEndTags(exclude=token["name"])
                if self.tree.openElements[-1].name != token["name"]:
                    self.parser.parseError("unexpected-end-tag", {"name": token["name"]})
                while self.tree.openElements.pop() != node:
                    pass
                break
            else:
                if node.nameTuple in specialElements:
                    self.parser.parseError("unexpected-end-tag", {"name": token["name"]})
                    break

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        (("base", "basefont", "bgsound", "command", "link", "meta",
          "script", "style", "title"),
         startTagProcessInHead),
        ("body", startTagBody),
        ("frameset", startTagFrameset),
        (("address", "article", "aside", "blockquote", "center", "details",
          "dir", "div", "dl", "fieldset", "figcaption", "figure",
          "footer", "header", "hgroup", "main", "menu", "nav", "ol", "p",
          "section", "summary", "ul"),
         startTagCloseP),
        (headingElements, startTagHeading),
        (("pre", "listing"), startTagPreListing),
        ("form", startTagForm),
        (("li", "dd", "dt"), startTagListItem),
        ("plaintext", startTagPlaintext),
        ("a", startTagA),
        (("b", "big", "code", "em", "font", "i", "s", "small", "strike",
          "strong", "tt", "u"), startTagFormatting),
        ("nobr", startTagNobr),
        ("button", startTagButton),
        (("applet", "marquee", "object"), startTagAppletMarqueeObject),
        ("xmp", startTagXmp),
        ("table", startTagTable),
        (("area", "br", "embed", "img", "keygen", "wbr"),
         startTagVoidFormatting),
        (("param", "source", "track"), startTagParamSource),
        ("input", startTagInput),
        ("hr", startTagHr),
        ("image", startTagImage),
        ("isindex", startTagIsIndex),
        ("textarea", startTagTextarea),
        ("iframe", startTagIFrame),
        ("noscript", startTagNoscript),
        (("noembed", "noframes"), startTagRawtext),
        ("select", startTagSelect),
        (("rp", "rt"), startTagRpRt),
        (("option", "optgroup"), startTagOpt),
        (("math"), startTagMath),
        (("svg"), startTagSvg),
        (("caption", "col", "colgroup", "frame", "head",
          "tbody", "td", "tfoot", "th", "thead",
          "tr"), startTagMisplaced)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("body", endTagBody),
        ("html", endTagHtml),
        (("address", "article", "aside", "blockquote", "button", "center",
          "details", "dialog", "dir", "div", "dl", "fieldset", "figcaption", "figure",
          "footer", "header", "hgroup", "listing", "main", "menu", "nav", "ol", "pre",
          "section", "summary", "ul"), endTagBlock),
        ("form", endTagForm),
        ("p", endTagP),
        (("dd", "dt", "li"), endTagListItem),
        (headingElements, endTagHeading),
        (("a", "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
          "strike", "strong", "tt", "u"), endTagFormatting),
        (("applet", "marquee", "object"), endTagAppletMarqueeObject),
        ("br", endTagBr),
    ])
    endTagHandler.default = endTagOther


class TextPhase(Phase):
    __slots__ = tuple()

    def processCharacters(self, token):
        self.tree.insertText(token["data"])

    def processEOF(self):
        self.parser.parseError("expected-named-closing-tag-but-got-eof",
                               {"name": self.tree.openElements[-1].name})
        self.tree.openElements.pop()
        self.parser.phase = self.parser.originalPhase
        return True

    def startTagOther(self, token):
        assert False, "Tried to process start tag %s in RCDATA/RAWTEXT mode" % token['name']

    def endTagScript(self, token):
        node = self.tree.openElements.pop()
        assert node.name == "script"
        self.parser.phase = self.parser.originalPhase
        # The rest of this method is all stuff that only happens if
        # document.write works

    def endTagOther(self, token):
        self.tree.openElements.pop()
        self.parser.phase = self.parser.originalPhase

    startTagHandler = _utils.MethodDispatcher([])
    startTagHandler.default = startTagOther
    endTagHandler = _utils.MethodDispatcher([
        ("script", endTagScript)])
    endTagHandler.default = endTagOther


class InTablePhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#in-table
    __slots__ = tuple()

    # helper methods
    def clearStackToTableContext(self):
        # "clear the stack back to a table context"
        while self.tree.openElements[-1].name not in ("table", "html"):
            # self.parser.parseError("unexpected-implied-end-tag-in-table",
            #  {"name":  self.tree.openElements[-1].name})
            self.tree.openElements.pop()
        # When the current node is <html> it's an innerHTML case

    # processing methods
    def processEOF(self):
        if self.tree.openElements[-1].name != "html":
            self.parser.parseError("eof-in-table")
        else:
            assert self.parser.innerHTML
        # Stop parsing

    def processSpaceCharacters(self, token):
        originalPhase = self.parser.phase
        self.parser.phase = self.parser.phases["inTableText"]
        self.parser.phase.originalPhase = originalPhase
        self.parser.phase.processSpaceCharacters(token)

    def processCharacters(self, token):
        originalPhase = self.parser.phase
        self.parser.phase = self.parser.phases["inTableText"]
        self.parser.phase.originalPhase = originalPhase
        self.parser.phase.processCharacters(token)

    def insertText(self, token):
        # If we get here there must be at least one non-whitespace character
        # Do the table magic!
        self.tree.insertFromTable = True
        self.parser.phases["inBody"].processCharacters(token)
        self.tree.insertFromTable = False

    def startTagCaption(self, token):
        self.clearStackToTableContext()
        self.tree.activeFormattingElements.append(Marker)
        self.tree.insertElement(token)
        self.parser.phase = self.parser.phases["inCaption"]

    def startTagColgroup(self, token):
        self.clearStackToTableContext()
        self.tree.insertElement(token)
        self.parser.phase = self.parser.phases["inColumnGroup"]

    def startTagCol(self, token):
        self.startTagColgroup(impliedTagToken("colgroup", "StartTag"))
        return token

    def startTagRowGroup(self, token):
        self.clearStackToTableContext()
        self.tree.insertElement(token)
        self.parser.phase = self.parser.phases["inTableBody"]

    def startTagImplyTbody(self, token):
        self.startTagRowGroup(impliedTagToken("tbody", "StartTag"))
        return token

    def startTagTable(self, token):
        self.parser.parseError("unexpected-start-tag-implies-end-tag",
                               {"startName": "table", "endName": "table"})
        self.parser.phase.processEndTag(impliedTagToken("table"))
        if not self.parser.innerHTML:
            return token

    def startTagStyleScript(self, token):
        return self.parser.phases["inHead"].processStartTag(token)

    def startTagInput(self, token):
        if ("type" in token["data"] and
                token["data"]["type"].translate(asciiUpper2Lower) == "hidden"):
            self.parser.parseError("unexpected-hidden-input-in-table")
            self.tree.insertElement(token)
            # XXX associate with form
            self.tree.openElements.pop()
        else:
            self.startTagOther(token)

    def startTagForm(self, token):
        self.parser.parseError("unexpected-form-in-table")
        if self.tree.formPointer is None:
            self.tree.insertElement(token)
            self.tree.formPointer = self.tree.openElements[-1]
            self.tree.openElements.pop()

    def startTagOther(self, token):
        self.parser.parseError("unexpected-start-tag-implies-table-voodoo", {"name": token["name"]})
        # Do the table magic!
        self.tree.insertFromTable = True
        self.parser.phases["inBody"].processStartTag(token)
        self.tree.insertFromTable = False

    def endTagTable(self, token):
        if self.tree.elementInScope("table", variant="table"):
            self.tree.generateImpliedEndTags()
            if self.tree.openElements[-1].name != "table":
                self.parser.parseError("end-tag-too-early-named",
                                       {"gotName": "table",
                                        "expectedName": self.tree.openElements[-1].name})
            while self.tree.openElements[-1].name != "table":
                self.tree.openElements.pop()
            self.tree.openElements.pop()
            self.parser.resetInsertionMode()
        else:
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()

    def endTagIgnore(self, token):
        self.parser.parseError("unexpected-end-tag", {"name": token["name"]})

    def endTagOther(self, token):
        self.parser.parseError("unexpected-end-tag-implies-table-voodoo", {"name": token["name"]})
        # Do the table magic!
        self.tree.insertFromTable = True
        self.parser.phases["inBody"].processEndTag(token)
        self.tree.insertFromTable = False

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        ("caption", startTagCaption),
        ("colgroup", startTagColgroup),
        ("col", startTagCol),
        (("tbody", "tfoot", "thead"), startTagRowGroup),
        (("td", "th", "tr"), startTagImplyTbody),
        ("table", startTagTable),
        (("style", "script"), startTagStyleScript),
        ("input", startTagInput),
        ("form", startTagForm)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("table", endTagTable),
        (("body", "caption", "col", "colgroup", "html", "tbody", "td",
          "tfoot", "th", "thead", "tr"), endTagIgnore)
    ])
    endTagHandler.default = endTagOther


class InTableTextPhase(Phase):
    __slots__ = ("originalPhase", "characterTokens")

    def __init__(self, *args, **kwargs):
        super(InTableTextPhase, self).__init__(*args, **kwargs)
        self.originalPhase = None
        self.characterTokens = []

    def flushCharacters(self):
        data = "".join([item["data"] for item in self.characterTokens])
        if any(item not in spaceCharacters for item in data):
            token = {"type": tokenTypes["Characters"], "data": data}
            self.parser.phases["inTable"].insertText(token)
        elif data:
            self.tree.insertText(data)
        self.characterTokens = []

    def processComment(self, token):
        self.flushCharacters()
        self.parser.phase = self.originalPhase
        return token

    def processEOF(self):
        self.flushCharacters()
        self.parser.phase = self.originalPhase
        return True

    def processCharacters(self, token):
        if token["data"] == "\u0000":
            return
        self.characterTokens.append(token)

    def processSpaceCharacters(self, token):
        # pretty sure we should never reach here
        self.characterTokens.append(token)
#        assert False

    def processStartTag(self, token):
        self.flushCharacters()
        self.parser.phase = self.originalPhase
        return token

    def processEndTag(self, token):
        self.flushCharacters()
        self.parser.phase = self.originalPhase
        return token


class InCaptionPhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#in-caption
    __slots__ = tuple()

    def ignoreEndTagCaption(self):
        return not self.tree.elementInScope("caption", variant="table")

    def processEOF(self):
        self.parser.phases["inBody"].processEOF()

    def processCharacters(self, token):
        return self.parser.phases["inBody"].processCharacters(token)

    def startTagTableElement(self, token):
        self.parser.parseError()
        # XXX Have to duplicate logic here to find out if the tag is ignored
        ignoreEndTag = self.ignoreEndTagCaption()
        self.parser.phase.processEndTag(impliedTagToken("caption"))
        if not ignoreEndTag:
            return token

    def startTagOther(self, token):
        return self.parser.phases["inBody"].processStartTag(token)

    def endTagCaption(self, token):
        if not self.ignoreEndTagCaption():
            # AT this code is quite similar to endTagTable in "InTable"
            self.tree.generateImpliedEndTags()
            if self.tree.openElements[-1].name != "caption":
                self.parser.parseError("expected-one-end-tag-but-got-another",
                                       {"gotName": "caption",
                                        "expectedName": self.tree.openElements[-1].name})
            while self.tree.openElements[-1].name != "caption":
                self.tree.openElements.pop()
            self.tree.openElements.pop()
            self.tree.clearActiveFormattingElements()
            self.parser.phase = self.parser.phases["inTable"]
        else:
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()

    def endTagTable(self, token):
        self.parser.parseError()
        ignoreEndTag = self.ignoreEndTagCaption()
        self.parser.phase.processEndTag(impliedTagToken("caption"))
        if not ignoreEndTag:
            return token

    def endTagIgnore(self, token):
        self.parser.parseError("unexpected-end-tag", {"name": token["name"]})

    def endTagOther(self, token):
        return self.parser.phases["inBody"].processEndTag(token)

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        (("caption", "col", "colgroup", "tbody", "td", "tfoot", "th",
          "thead", "tr"), startTagTableElement)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("caption", endTagCaption),
        ("table", endTagTable),
        (("body", "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
          "thead", "tr"), endTagIgnore)
    ])
    endTagHandler.default = endTagOther


class InColumnGroupPhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#in-column
    __slots__ = tuple()

    def ignoreEndTagColgroup(self):
        return self.tree.openElements[-1].name == "html"

    def processEOF(self):
        if self.tree.openElements[-1].name == "html":
            assert self.parser.innerHTML
            return
        else:
            ignoreEndTag = self.ignoreEndTagColgroup()
            self.endTagColgroup(impliedTagToken("colgroup"))
            if not ignoreEndTag:
                return True

    def processCharacters(self, token):
        ignoreEndTag = self.ignoreEndTagColgroup()
        self.endTagColgroup(impliedTagToken("colgroup"))
        if not ignoreEndTag:
            return token

    def startTagCol(self, token):
        self.tree.insertElement(token)
        self.tree.openElements.pop()
        token["selfClosingAcknowledged"] = True

    def startTagOther(self, token):
        ignoreEndTag = self.ignoreEndTagColgroup()
        self.endTagColgroup(impliedTagToken("colgroup"))
        if not ignoreEndTag:
            return token

    def endTagColgroup(self, token):
        if self.ignoreEndTagColgroup():
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()
        else:
            self.tree.openElements.pop()
            self.parser.phase = self.parser.phases["inTable"]

    def endTagCol(self, token):
        self.parser.parseError("no-end-tag", {"name": "col"})

    def endTagOther(self, token):
        ignoreEndTag = self.ignoreEndTagColgroup()
        self.endTagColgroup(impliedTagToken("colgroup"))
        if not ignoreEndTag:
            return token

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        ("col", startTagCol)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("colgroup", endTagColgroup),
        ("col", endTagCol)
    ])
    endTagHandler.default = endTagOther


class InTableBodyPhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#in-table0
    __slots__ = tuple()

    # helper methods
    def clearStackToTableBodyContext(self):
        while self.tree.openElements[-1].name not in ("tbody", "tfoot",
                                                      "thead", "html"):
            # self.parser.parseError("unexpected-implied-end-tag-in-table",
            #  {"name": self.tree.openElements[-1].name})
            self.tree.openElements.pop()
        if self.tree.openElements[-1].name == "html":
            assert self.parser.innerHTML

    # the rest
    def processEOF(self):
        self.parser.phases["inTable"].processEOF()

    def processSpaceCharacters(self, token):
        return self.parser.phases["inTable"].processSpaceCharacters(token)

    def processCharacters(self, token):
        return self.parser.phases["inTable"].processCharacters(token)

    def startTagTr(self, token):
        self.clearStackToTableBodyContext()
        self.tree.insertElement(token)
        self.parser.phase = self.parser.phases["inRow"]

    def startTagTableCell(self, token):
        self.parser.parseError("unexpected-cell-in-table-body",
                               {"name": token["name"]})
        self.startTagTr(impliedTagToken("tr", "StartTag"))
        return token

    def startTagTableOther(self, token):
        # XXX AT Any ideas on how to share this with endTagTable?
        if (self.tree.elementInScope("tbody", variant="table") or
            self.tree.elementInScope("thead", variant="table") or
                self.tree.elementInScope("tfoot", variant="table")):
            self.clearStackToTableBodyContext()
            self.endTagTableRowGroup(
                impliedTagToken(self.tree.openElements[-1].name))
            return token
        else:
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()

    def startTagOther(self, token):
        return self.parser.phases["inTable"].processStartTag(token)

    def endTagTableRowGroup(self, token):
        if self.tree.elementInScope(token["name"], variant="table"):
            self.clearStackToTableBodyContext()
            self.tree.openElements.pop()
            self.parser.phase = self.parser.phases["inTable"]
        else:
            self.parser.parseError("unexpected-end-tag-in-table-body",
                                   {"name": token["name"]})

    def endTagTable(self, token):
        if (self.tree.elementInScope("tbody", variant="table") or
            self.tree.elementInScope("thead", variant="table") or
                self.tree.elementInScope("tfoot", variant="table")):
            self.clearStackToTableBodyContext()
            self.endTagTableRowGroup(
                impliedTagToken(self.tree.openElements[-1].name))
            return token
        else:
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()

    def endTagIgnore(self, token):
        self.parser.parseError("unexpected-end-tag-in-table-body",
                               {"name": token["name"]})

    def endTagOther(self, token):
        return self.parser.phases["inTable"].processEndTag(token)

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        ("tr", startTagTr),
        (("td", "th"), startTagTableCell),
        (("caption", "col", "colgroup", "tbody", "tfoot", "thead"),
         startTagTableOther)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        (("tbody", "tfoot", "thead"), endTagTableRowGroup),
        ("table", endTagTable),
        (("body", "caption", "col", "colgroup", "html", "td", "th",
          "tr"), endTagIgnore)
    ])
    endTagHandler.default = endTagOther


class InRowPhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#in-row
    __slots__ = tuple()

    # helper methods (XXX unify this with other table helper methods)
    def clearStackToTableRowContext(self):
        while self.tree.openElements[-1].name not in ("tr", "html"):
            self.parser.parseError("unexpected-implied-end-tag-in-table-row",
                                   {"name": self.tree.openElements[-1].name})
            self.tree.openElements.pop()

    def ignoreEndTagTr(self):
        return not self.tree.elementInScope("tr", variant="table")

    # the rest
    def processEOF(self):
        self.parser.phases["inTable"].processEOF()

    def processSpaceCharacters(self, token):
        return self.parser.phases["inTable"].processSpaceCharacters(token)

    def processCharacters(self, token):
        return self.parser.phases["inTable"].processCharacters(token)

    def startTagTableCell(self, token):
        self.clearStackToTableRowContext()
        self.tree.insertElement(token)
        self.parser.phase = self.parser.phases["inCell"]
        self.tree.activeFormattingElements.append(Marker)

    def startTagTableOther(self, token):
        ignoreEndTag = self.ignoreEndTagTr()
        self.endTagTr(impliedTagToken("tr"))
        # XXX how are we sure it's always ignored in the innerHTML case?
        if not ignoreEndTag:
            return token

    def startTagOther(self, token):
        return self.parser.phases["inTable"].processStartTag(token)

    def endTagTr(self, token):
        if not self.ignoreEndTagTr():
            self.clearStackToTableRowContext()
            self.tree.openElements.pop()
            self.parser.phase = self.parser.phases["inTableBody"]
        else:
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()

    def endTagTable(self, token):
        ignoreEndTag = self.ignoreEndTagTr()
        self.endTagTr(impliedTagToken("tr"))
        # Reprocess the current tag if the tr end tag was not ignored
        # XXX how are we sure it's always ignored in the innerHTML case?
        if not ignoreEndTag:
            return token

    def endTagTableRowGroup(self, token):
        if self.tree.elementInScope(token["name"], variant="table"):
            self.endTagTr(impliedTagToken("tr"))
            return token
        else:
            self.parser.parseError()

    def endTagIgnore(self, token):
        self.parser.parseError("unexpected-end-tag-in-table-row",
                               {"name": token["name"]})

    def endTagOther(self, token):
        return self.parser.phases["inTable"].processEndTag(token)

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        (("td", "th"), startTagTableCell),
        (("caption", "col", "colgroup", "tbody", "tfoot", "thead",
          "tr"), startTagTableOther)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("tr", endTagTr),
        ("table", endTagTable),
        (("tbody", "tfoot", "thead"), endTagTableRowGroup),
        (("body", "caption", "col", "colgroup", "html", "td", "th"),
         endTagIgnore)
    ])
    endTagHandler.default = endTagOther


class InCellPhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#in-cell
    __slots__ = tuple()

    # helper
    def closeCell(self):
        if self.tree.elementInScope("td", variant="table"):
            self.endTagTableCell(impliedTagToken("td"))
        elif self.tree.elementInScope("th", variant="table"):
            self.endTagTableCell(impliedTagToken("th"))

    # the rest
    def processEOF(self):
        self.parser.phases["inBody"].processEOF()

    def processCharacters(self, token):
        return self.parser.phases["inBody"].processCharacters(token)

    def startTagTableOther(self, token):
        if (self.tree.elementInScope("td", variant="table") or
                self.tree.elementInScope("th", variant="table")):
            self.closeCell()
            return token
        else:
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()

    def startTagOther(self, token):
        return self.parser.phases["inBody"].processStartTag(token)

    def endTagTableCell(self, token):
        if self.tree.elementInScope(token["name"], variant="table"):
            self.tree.generateImpliedEndTags(token["name"])
            if self.tree.openElements[-1].name != token["name"]:
                self.parser.parseError("unexpected-cell-end-tag",
                                       {"name": token["name"]})
                while True:
                    node = self.tree.openElements.pop()
                    if node.name == token["name"]:
                        break
            else:
                self.tree.openElements.pop()
            self.tree.clearActiveFormattingElements()
            self.parser.phase = self.parser.phases["inRow"]
        else:
            self.parser.parseError("unexpected-end-tag", {"name": token["name"]})

    def endTagIgnore(self, token):
        self.parser.parseError("unexpected-end-tag", {"name": token["name"]})

    def endTagImply(self, token):
        if self.tree.elementInScope(token["name"], variant="table"):
            self.closeCell()
            return token
        else:
            # sometimes innerHTML case
            self.parser.parseError()

    def endTagOther(self, token):
        return self.parser.phases["inBody"].processEndTag(token)

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        (("caption", "col", "colgroup", "tbody", "td", "tfoot", "th",
          "thead", "tr"), startTagTableOther)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        (("td", "th"), endTagTableCell),
        (("body", "caption", "col", "colgroup", "html"), endTagIgnore),
        (("table", "tbody", "tfoot", "thead", "tr"), endTagImply)
    ])
    endTagHandler.default = endTagOther


class InSelectPhase(Phase):
    __slots__ = tuple()

    # http://www.whatwg.org/specs/web-apps/current-work/#in-select
    def processEOF(self):
        if self.tree.openElements[-1].name != "html":
            self.parser.parseError("eof-in-select")
        else:
            assert self.parser.innerHTML

    def processCharacters(self, token):
        if token["data"] == "\u0000":
            return
        self.tree.insertText(token["data"])

    def startTagOption(self, token):
        # We need to imply </option> if <option> is the current node.
        if self.tree.openElements[-1].name == "option":
            self.tree.openElements.pop()
        self.tree.insertElement(token)

    def startTagOptgroup(self, token):
        if self.tree.openElements[-1].name == "option":
            self.tree.openElements.pop()
        if self.tree.openElements[-1].name == "optgroup":
            self.tree.openElements.pop()
        self.tree.insertElement(token)

    def startTagSelect(self, token):
        self.parser.parseError("unexpected-select-in-select")
        self.endTagSelect(impliedTagToken("select"))

    def startTagInput(self, token):
        self.parser.parseError("unexpected-input-in-select")
        if self.tree.elementInScope("select", variant="select"):
            self.endTagSelect(impliedTagToken("select"))
            return token
        else:
            assert self.parser.innerHTML

    def startTagScript(self, token):
        return self.parser.phases["inHead"].processStartTag(token)

    def startTagOther(self, token):
        self.parser.parseError("unexpected-start-tag-in-select",
                               {"name": token["name"]})

    def endTagOption(self, token):
        if self.tree.openElements[-1].name == "option":
            self.tree.openElements.pop()
        else:
            self.parser.parseError("unexpected-end-tag-in-select",
                                   {"name": "option"})

    def endTagOptgroup(self, token):
        # </optgroup> implicitly closes <option>
        if (self.tree.openElements[-1].name == "option" and
                self.tree.openElements[-2].name == "optgroup"):
            self.tree.openElements.pop()
        # It also closes </optgroup>
        if self.tree.openElements[-1].name == "optgroup":
            self.tree.openElements.pop()
        # But nothing else
        else:
            self.parser.parseError("unexpected-end-tag-in-select",
                                   {"name": "optgroup"})

    def endTagSelect(self, token):
        if self.tree.elementInScope("select", variant="select"):
            node = self.tree.openElements.pop()
            while node.name != "select":
                node = self.tree.openElements.pop()
            self.parser.resetInsertionMode()
        else:
            # innerHTML case
            assert self.parser.innerHTML
            self.parser.parseError()

    def endTagOther(self, token):
        self.parser.parseError("unexpected-end-tag-in-select",
                               {"name": token["name"]})

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        ("option", startTagOption),
        ("optgroup", startTagOptgroup),
        ("select", startTagSelect),
        (("input", "keygen", "textarea"), startTagInput),
        ("script", startTagScript)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("option", endTagOption),
        ("optgroup", endTagOptgroup),
        ("select", endTagSelect)
    ])
    endTagHandler.default = endTagOther


class InSelectInTablePhase(Phase):
    __slots__ = tuple()

    def processEOF(self):
        self.parser.phases["inSelect"].processEOF()

    def processCharacters(self, token):
        return self.parser.phases["inSelect"].processCharacters(token)

    def startTagTable(self, token):
        self.parser.parseError("unexpected-table-element-start-tag-in-select-in-table", {"name": token["name"]})
        self.endTagOther(impliedTagToken("select"))
        return token

    def startTagOther(self, token):
        return self.parser.phases["inSelect"].processStartTag(token)

    def endTagTable(self, token):
        self.parser.parseError("unexpected-table-element-end-tag-in-select-in-table", {"name": token["name"]})
        if self.tree.elementInScope(token["name"], variant="table"):
            self.endTagOther(impliedTagToken("select"))
            return token

    def endTagOther(self, token):
        return self.parser.phases["inSelect"].processEndTag(token)

    startTagHandler = _utils.MethodDispatcher([
        (("caption", "table", "tbody", "tfoot", "thead", "tr", "td", "th"),
         startTagTable)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        (("caption", "table", "tbody", "tfoot", "thead", "tr", "td", "th"),
         endTagTable)
    ])
    endTagHandler.default = endTagOther


class InForeignContentPhase(Phase):
    __slots__ = tuple()

    breakoutElements = frozenset(["b", "big", "blockquote", "body", "br",
                                  "center", "code", "dd", "div", "dl", "dt",
                                  "em", "embed", "h1", "h2", "h3",
                                  "h4", "h5", "h6", "head", "hr", "i", "img",
                                  "li", "listing", "menu", "meta", "nobr",
                                  "ol", "p", "pre", "ruby", "s", "small",
                                  "span", "strong", "strike", "sub", "sup",
                                  "table", "tt", "u", "ul", "var"])

    def adjustSVGTagNames(self, token):
        replacements = {"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",
                        "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"}

        if token["name"] in replacements:
            token["name"] = replacements[token["name"]]

    def processCharacters(self, token):
        if token["data"] == "\u0000":
            token["data"] = "\uFFFD"
        elif (self.parser.framesetOK and
              any(char not in spaceCharacters for char in token["data"])):
            self.parser.framesetOK = False
        Phase.processCharacters(self, token)

    def processStartTag(self, token):
        currentNode = self.tree.openElements[-1]
        if (token["name"] in self.breakoutElements or
            (token["name"] == "font" and
             set(token["data"].keys()) & {"color", "face", "size"})):
            self.parser.parseError("unexpected-html-element-in-foreign-content",
                                   {"name": token["name"]})
            while (self.tree.openElements[-1].namespace !=
                   self.tree.defaultNamespace and
                   not self.parser.isHTMLIntegrationPoint(self.tree.openElements[-1]) and
                   not self.parser.isMathMLTextIntegrationPoint(self.tree.openElements[-1])):
                self.tree.openElements.pop()
            return token

        else:
            if currentNode.namespace == namespaces["mathml"]:
                self.parser.adjustMathMLAttributes(token)
            elif currentNode.namespace == namespaces["svg"]:
                self.adjustSVGTagNames(token)
                self.parser.adjustSVGAttributes(token)
            self.parser.adjustForeignAttributes(token)
            token["namespace"] = currentNode.namespace
            self.tree.insertElement(token)
            if token["selfClosing"]:
                self.tree.openElements.pop()
                token["selfClosingAcknowledged"] = True

    def processEndTag(self, token):
        nodeIndex = len(self.tree.openElements) - 1
        node = self.tree.openElements[-1]
        if node.name.translate(asciiUpper2Lower) != token["name"]:
            self.parser.parseError("unexpected-end-tag", {"name": token["name"]})

        while True:
            if node.name.translate(asciiUpper2Lower) == token["name"]:
                # XXX this isn't in the spec but it seems necessary
                if self.parser.phase == self.parser.phases["inTableText"]:
                    self.parser.phase.flushCharacters()
                    self.parser.phase = self.parser.phase.originalPhase
                while self.tree.openElements.pop() != node:
                    assert self.tree.openElements
                new_token = None
                break
            nodeIndex -= 1

            node = self.tree.openElements[nodeIndex]
            if node.namespace != self.tree.defaultNamespace:
                continue
            else:
                new_token = self.parser.phase.processEndTag(token)
                break
        return new_token


class AfterBodyPhase(Phase):
    __slots__ = tuple()

    def processEOF(self):
        # Stop parsing
        pass

    def processComment(self, token):
        # This is needed because data is to be appended to the <html> element
        # here and not to whatever is currently open.
        self.tree.insertComment(token, self.tree.openElements[0])

    def processCharacters(self, token):
        self.parser.parseError("unexpected-char-after-body")
        self.parser.phase = self.parser.phases["inBody"]
        return token

    def startTagHtml(self, token):
        return self.parser.phases["inBody"].processStartTag(token)

    def startTagOther(self, token):
        self.parser.parseError("unexpected-start-tag-after-body",
                               {"name": token["name"]})
        self.parser.phase = self.parser.phases["inBody"]
        return token

    def endTagHtml(self, name):
        if self.parser.innerHTML:
            self.parser.parseError("unexpected-end-tag-after-body-innerhtml")
        else:
            self.parser.phase = self.parser.phases["afterAfterBody"]

    def endTagOther(self, token):
        self.parser.parseError("unexpected-end-tag-after-body",
                               {"name": token["name"]})
        self.parser.phase = self.parser.phases["inBody"]
        return token

    startTagHandler = _utils.MethodDispatcher([
        ("html", startTagHtml)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([("html", endTagHtml)])
    endTagHandler.default = endTagOther


class InFramesetPhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#in-frameset
    __slots__ = tuple()

    def processEOF(self):
        if self.tree.openElements[-1].name != "html":
            self.parser.parseError("eof-in-frameset")
        else:
            assert self.parser.innerHTML

    def processCharacters(self, token):
        self.parser.parseError("unexpected-char-in-frameset")

    def startTagFrameset(self, token):
        self.tree.insertElement(token)

    def startTagFrame(self, token):
        self.tree.insertElement(token)
        self.tree.openElements.pop()

    def startTagNoframes(self, token):
        return self.parser.phases["inBody"].processStartTag(token)

    def startTagOther(self, token):
        self.parser.parseError("unexpected-start-tag-in-frameset",
                               {"name": token["name"]})

    def endTagFrameset(self, token):
        if self.tree.openElements[-1].name == "html":
            # innerHTML case
            self.parser.parseError("unexpected-frameset-in-frameset-innerhtml")
        else:
            self.tree.openElements.pop()
        if (not self.parser.innerHTML and
                self.tree.openElements[-1].name != "frameset"):
            # If we're not in innerHTML mode and the current node is not a
            # "frameset" element (anymore) then switch.
            self.parser.phase = self.parser.phases["afterFrameset"]

    def endTagOther(self, token):
        self.parser.parseError("unexpected-end-tag-in-frameset",
                               {"name": token["name"]})

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        ("frameset", startTagFrameset),
        ("frame", startTagFrame),
        ("noframes", startTagNoframes)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("frameset", endTagFrameset)
    ])
    endTagHandler.default = endTagOther


class AfterFramesetPhase(Phase):
    # http://www.whatwg.org/specs/web-apps/current-work/#after3
    __slots__ = tuple()

    def processEOF(self):
        # Stop parsing
        pass

    def processCharacters(self, token):
        self.parser.parseError("unexpected-char-after-frameset")

    def startTagNoframes(self, token):
        return self.parser.phases["inHead"].processStartTag(token)

    def startTagOther(self, token):
        self.parser.parseError("unexpected-start-tag-after-frameset",
                               {"name": token["name"]})

    def endTagHtml(self, token):
        self.parser.phase = self.parser.phases["afterAfterFrameset"]

    def endTagOther(self, token):
        self.parser.parseError("unexpected-end-tag-after-frameset",
                               {"name": token["name"]})

    startTagHandler = _utils.MethodDispatcher([
        ("html", Phase.startTagHtml),
        ("noframes", startTagNoframes)
    ])
    startTagHandler.default = startTagOther

    endTagHandler = _utils.MethodDispatcher([
        ("html", endTagHtml)
    ])
    endTagHandler.default = endTagOther


class AfterAfterBodyPhase(Phase):
    __slots__ = tuple()

    def processEOF(self):
        pass

    def processComment(self, token):
        self.tree.insertComment(token, self.tree.document)

    def processSpaceCharacters(self, token):
        return self.parser.phases["inBody"].processSpaceCharacters(token)

    def processCharacters(self, token):
        self.parser.parseError("expected-eof-but-got-char")
        self.parser.phase = self.parser.phases["inBody"]
        return token

    def startTagHtml(self, token):
        return self.parser.phases["inBody"].processStartTag(token)

    def startTagOther(self, token):
        self.parser.parseError("expected-eof-but-got-start-tag",
                               {"name": token["name"]})
        self.parser.phase = self.parser.phases["inBody"]
        return token

    def processEndTag(self, token):
        self.parser.parseError("expected-eof-but-got-end-tag",
                               {"name": token["name"]})
        self.parser.phase = self.parser.phases["inBody"]
        return token

    startTagHandler = _utils.MethodDispatcher([
        ("html", startTagHtml)
    ])
    startTagHandler.default = startTagOther


class AfterAfterFramesetPhase(Phase):
    __slots__ = tuple()

    def processEOF(self):
        pass

    def processComment(self, token):
        self.tree.insertComment(token, self.tree.document)

    def processSpaceCharacters(self, token):
        return self.parser.phases["inBody"].processSpaceCharacters(token)

    def processCharacters(self, token):
        self.parser.parseError("expected-eof-but-got-char")

    def startTagHtml(self, token):
        return self.parser.phases["inBody"].processStartTag(token)

    def startTagNoFrames(self, token):
        return self.parser.phases["inHead"].processStartTag(token)

    def startTagOther(self, token):
        self.parser.parseError("expected-eof-but-got-start-tag",
                               {"name": token["name"]})

    def processEndTag(self, token):
        self.parser.parseError("expected-eof-but-got-end-tag",
                               {"name": token["name"]})

    startTagHandler = _utils.MethodDispatcher([
        ("html", startTagHtml),
        ("noframes", startTagNoFrames)
    ])
    startTagHandler.default = startTagOther

# pylint:enable=unused-argument


_phases = {
    "initial": InitialPhase,
    "beforeHtml": BeforeHtmlPhase,
    "beforeHead": BeforeHeadPhase,
    "inHead": InHeadPhase,
    "inHeadNoscript": InHeadNoscriptPhase,
    "afterHead": AfterHeadPhase,
    "inBody": InBodyPhase,
    "text": TextPhase,
    "inTable": InTablePhase,
    "inTableText": InTableTextPhase,
    "inCaption": InCaptionPhase,
    "inColumnGroup": InColumnGroupPhase,
    "inTableBody": InTableBodyPhase,
    "inRow": InRowPhase,
    "inCell": InCellPhase,
    "inSelect": InSelectPhase,
    "inSelectInTable": InSelectInTablePhase,
    "inForeignContent": InForeignContentPhase,
    "afterBody": AfterBodyPhase,
    "inFrameset": InFramesetPhase,
    "afterFrameset": AfterFramesetPhase,
    "afterAfterBody": AfterAfterBodyPhase,
    "afterAfterFrameset": AfterAfterFramesetPhase,
    # XXX after after frameset
}


def adjust_attributes(token, replacements):
    needs_adjustment = token['data'].keys() & replacements.keys()
    if needs_adjustment:
        token['data'] = type(token['data'])((replacements.get(k, k), v)
                                            for k, v in token['data'].items())


def impliedTagToken(name, type="EndTag", attributes=None,
                    selfClosing=False):
    if attributes is None:
        attributes = {}
    return {"type": tokenTypes[type], "name": name, "data": attributes,
            "selfClosing": selfClosing}


class ParseError(Exception):
    """Error in parsed document"""
    pass