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Diffstat (limited to 'parser/htmlparser/nsHTMLTags.h')
-rw-r--r-- | parser/htmlparser/nsHTMLTags.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/parser/htmlparser/nsHTMLTags.h b/parser/htmlparser/nsHTMLTags.h new file mode 100644 index 000000000..8f0c86b4b --- /dev/null +++ b/parser/htmlparser/nsHTMLTags.h @@ -0,0 +1,94 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef nsHTMLTags_h___ +#define nsHTMLTags_h___ + +#include "nsString.h" +#include "plhash.h" + +class nsIAtom; + +/* + Declare the enum list using the magic of preprocessing + enum values are "eHTMLTag_foo" (where foo is the tag) + + To change the list of tags, see nsHTMLTagList.h + + */ +#define HTML_TAG(_tag, _classname) eHTMLTag_##_tag, +#define HTML_HTMLELEMENT_TAG(_tag) eHTMLTag_##_tag, +#define HTML_OTHER(_tag) eHTMLTag_##_tag, +enum nsHTMLTag { + /* this enum must be first and must be zero */ + eHTMLTag_unknown = 0, +#include "nsHTMLTagList.h" + + /* can't be moved into nsHTMLTagList since gcc3.4 doesn't like a + comma at the end of enum list*/ + eHTMLTag_userdefined +}; +#undef HTML_TAG +#undef HTML_HTMLELEMENT_TAG +#undef HTML_OTHER + +// All tags before eHTMLTag_text are HTML tags +#define NS_HTML_TAG_MAX int32_t(eHTMLTag_text - 1) + +class nsHTMLTags { +public: + static void RegisterAtoms(void); + static nsresult AddRefTable(void); + static void ReleaseTable(void); + + // Functions for converting string or atom to id + static nsHTMLTag LookupTag(const nsAString& aTagName); + static nsHTMLTag CaseSensitiveLookupTag(const char16_t* aTagName) + { + NS_ASSERTION(gTagTable, "no lookup table, needs addref"); + NS_ASSERTION(aTagName, "null tagname!"); + + void* tag = PL_HashTableLookupConst(gTagTable, aTagName); + + return tag ? (nsHTMLTag)NS_PTR_TO_INT32(tag) : eHTMLTag_userdefined; + } + static nsHTMLTag CaseSensitiveLookupTag(nsIAtom* aTagName) + { + NS_ASSERTION(gTagAtomTable, "no lookup table, needs addref"); + NS_ASSERTION(aTagName, "null tagname!"); + + void* tag = PL_HashTableLookupConst(gTagAtomTable, aTagName); + + return tag ? (nsHTMLTag)NS_PTR_TO_INT32(tag) : eHTMLTag_userdefined; + } + + // Functions for converting an id to a string or atom + static const char16_t *GetStringValue(nsHTMLTag aEnum) + { + return aEnum <= eHTMLTag_unknown || aEnum > NS_HTML_TAG_MAX ? + nullptr : sTagUnicodeTable[aEnum - 1]; + } + static nsIAtom *GetAtom(nsHTMLTag aEnum) + { + return aEnum <= eHTMLTag_unknown || aEnum > NS_HTML_TAG_MAX ? + nullptr : sTagAtomTable[aEnum - 1]; + } + +#ifdef DEBUG + static void TestTagTable(); +#endif + +private: + static nsIAtom* sTagAtomTable[eHTMLTag_userdefined - 1]; + static const char16_t* const sTagUnicodeTable[]; + + static int32_t gTableRefCount; + static PLHashTable* gTagTable; + static PLHashTable* gTagAtomTable; +}; + +#define eHTMLTags nsHTMLTag + +#endif /* nsHTMLTags_h___ */ |