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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CSSVariableResolver_h | 5 #ifndef CSSVariableResolver_h |
6 #define CSSVariableResolver_h | 6 #define CSSVariableResolver_h |
7 | 7 |
8 #include "core/CSSPropertyNames.h" | 8 #include "core/CSSPropertyNames.h" |
9 #include "core/css/parser/CSSParserToken.h" | 9 #include "core/css/parser/CSSParserToken.h" |
10 #include "wtf/HashSet.h" | 10 #include "wtf/HashSet.h" |
11 #include "wtf/text/AtomicString.h" | 11 #include "wtf/text/AtomicString.h" |
12 #include "wtf/text/AtomicStringHash.h" | 12 #include "wtf/text/AtomicStringHash.h" |
13 | 13 |
14 namespace blink { | 14 namespace blink { |
15 | 15 |
16 class CSSParserTokenRange; | 16 class CSSParserTokenRange; |
17 class CSSVariableData; | 17 class CSSVariableData; |
18 class CSSVariableReferenceValue; | 18 class CSSVariableReferenceValue; |
19 class StyleResolverState; | 19 class StyleResolverState; |
20 class StyleVariableData; | 20 class StyleVariableData; |
21 | 21 |
22 class CSSVariableResolver { | 22 class CSSVariableResolver { |
23 public: | 23 public: |
24 static void resolveVariableDefinitions(StyleVariableData*); | 24 static void resolveVariableDefinitions(StyleVariableData*); |
25 static void resolveAndApplyVariableReferences(StyleResolverState&, CSSProper
tyID, const CSSVariableReferenceValue&); | 25 static void resolveAndApplyVariableReferences(StyleResolverState&, CSSProper
tyID, const CSSVariableReferenceValue&); |
26 | 26 |
27 // Shorthand properties are not supported. | 27 // Shorthand properties are not supported. |
28 static RawPtr<CSSValue> resolveVariableReferences(StyleVariableData*, CSSPro
pertyID, const CSSVariableReferenceValue&); | 28 static CSSValue* resolveVariableReferences(StyleVariableData*, CSSPropertyID
, const CSSVariableReferenceValue&); |
29 | 29 |
30 private: | 30 private: |
31 CSSVariableResolver(StyleVariableData*); | 31 CSSVariableResolver(StyleVariableData*); |
32 | 32 |
33 // These return false if we encounter a reference to an invalid variable wit
h no fallback | 33 // These return false if we encounter a reference to an invalid variable wit
h no fallback |
34 | 34 |
35 // Resolves a range which may contain var() references or @apply rules | 35 // Resolves a range which may contain var() references or @apply rules |
36 bool resolveTokenRange(CSSParserTokenRange, Vector<CSSParserToken>& result); | 36 bool resolveTokenRange(CSSParserTokenRange, Vector<CSSParserToken>& result); |
37 // Resolves the fallback (if present) of a var() reference, starting from th
e comma | 37 // Resolves the fallback (if present) of a var() reference, starting from th
e comma |
38 bool resolveFallback(CSSParserTokenRange, Vector<CSSParserToken>& result); | 38 bool resolveFallback(CSSParserTokenRange, Vector<CSSParserToken>& result); |
(...skipping 13 matching lines...) Expand all Loading... |
52 HashSet<AtomicString> m_variablesSeen; | 52 HashSet<AtomicString> m_variablesSeen; |
53 // Resolution doesn't finish when a cycle is detected. Fallbacks still | 53 // Resolution doesn't finish when a cycle is detected. Fallbacks still |
54 // need to be tracked for additional cycles, and invalidation only | 54 // need to be tracked for additional cycles, and invalidation only |
55 // applies back to cycle starts. | 55 // applies back to cycle starts. |
56 HashSet<AtomicString> m_cycleStartPoints; | 56 HashSet<AtomicString> m_cycleStartPoints; |
57 }; | 57 }; |
58 | 58 |
59 } // namespace blink | 59 } // namespace blink |
60 | 60 |
61 #endif // CSSVariableResolver | 61 #endif // CSSVariableResolver |
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