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Patch co-authored by Emmanuele Bassi <ebassi@gmail.com> This defines a CSSVariableDeclarations class that holds a set of variable declarations. This is at the specified value stage, so values can either be 'initial', 'inherit' or a token stream (which is what you normally have). The variables are stored in a hash table. Although it's a bit of a hack, we store 'initial' and 'inherit' using special string values that can't be valid token streams (we use "!" and ";"). Declaration objects now can have two CSSVariableDeclarations objects on them, to store normal and !important variable declarations. So that we keep preserving the order of declarations on the object, we inflate mOrder to store uint32_ts, where values from eCSSProperty_COUNT onwards represent custom properties. mVariableOrder stores the names of the variables corresponding to those entries in mOrder. We also add a new nsCSSProperty value, eCSSPropertyExtra_variable, which is used to represent any custom property name. nsCSSProps::LookupProperty can return this value. The changes to nsCSSParser are straightforward. Custom properties are parsed and checked for syntactic validity (e.g. "var(a,)" being invalid) and stored on the Declaration. We use nsCSSScanner's recording ability to grab the unparsed CSS string corresponding to the variable's value.
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* enum types for CSS properties and their values */
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#ifndef nsCSSProperty_h___
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#define nsCSSProperty_h___
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/*
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Declare the enum list using the magic of preprocessing
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enum values are "eCSSProperty_foo" (where foo is the property)
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To change the list of properties, see nsCSSPropList.h
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*/
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enum nsCSSProperty {
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eCSSProperty_UNKNOWN = -1,
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#define CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, \
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kwtable_, stylestruct_, stylestructoffset_, animtype_) \
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eCSSProperty_##id_,
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#include "nsCSSPropList.h"
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#undef CSS_PROP
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eCSSProperty_COUNT_no_shorthands,
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// Make the count continue where it left off:
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eCSSProperty_COUNT_DUMMY = eCSSProperty_COUNT_no_shorthands - 1,
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#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, pref_) \
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eCSSProperty_##id_,
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#include "nsCSSPropList.h"
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#undef CSS_PROP_SHORTHAND
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eCSSProperty_COUNT,
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// Make the count continue where it left off:
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eCSSProperty_COUNT_DUMMY2 = eCSSProperty_COUNT - 1,
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#define CSS_PROP_ALIAS(aliasname_, id_, method_, pref_) \
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eCSSPropertyAlias_##method_,
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#include "nsCSSPropAliasList.h"
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#undef CSS_PROP_ALIAS
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eCSSProperty_COUNT_with_aliases,
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// Make the count continue where it left off:
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eCSSProperty_COUNT_DUMMY3 = eCSSProperty_COUNT_with_aliases - 1,
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// Some of the values below could probably overlap with each other
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// if we had a need for them to do so.
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// Extra values for use in the values of the 'transition-property'
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// property.
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eCSSPropertyExtra_no_properties,
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eCSSPropertyExtra_all_properties,
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// Extra dummy values for nsCSSParser internal use.
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eCSSPropertyExtra_x_none_value,
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eCSSPropertyExtra_x_auto_value,
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// Extra value to represent custom properties (var-*).
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eCSSPropertyExtra_variable
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};
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// The "descriptors" that can appear in a @font-face rule.
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// They have the syntax of properties but different value rules.
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enum nsCSSFontDesc {
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eCSSFontDesc_UNKNOWN = -1,
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#define CSS_FONT_DESC(name_, method_) eCSSFontDesc_##method_,
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#include "nsCSSFontDescList.h"
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#undef CSS_FONT_DESC
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eCSSFontDesc_COUNT
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};
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#endif /* nsCSSProperty_h___ */
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