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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" |
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40 | 40 |
41 static const CSSValue* resolvePendingSubstitutions( | 41 static const CSSValue* resolvePendingSubstitutions( |
42 const StyleResolverState&, | 42 const StyleResolverState&, |
43 CSSPropertyID, | 43 CSSPropertyID, |
44 const CSSPendingSubstitutionValue&); | 44 const CSSPendingSubstitutionValue&); |
45 static const CSSValue* resolveVariableReferences( | 45 static const CSSValue* resolveVariableReferences( |
46 const StyleResolverState&, | 46 const StyleResolverState&, |
47 CSSPropertyID, | 47 CSSPropertyID, |
48 const CSSVariableReferenceValue&); | 48 const CSSVariableReferenceValue&); |
49 | 49 |
50 // These return false if we encounter a reference to an invalid variable with
no fallback | 50 // These return false if we encounter a reference to an invalid variable with |
| 51 // no fallback. |
51 | 52 |
52 // Resolves a range which may contain var() references or @apply rules | 53 // Resolves a range which may contain var() references or @apply rules. |
53 bool resolveTokenRange(CSSParserTokenRange, Vector<CSSParserToken>& result); | 54 bool resolveTokenRange(CSSParserTokenRange, Vector<CSSParserToken>& result); |
54 // Resolves the fallback (if present) of a var() reference, starting from the
comma | 55 // Resolves the fallback (if present) of a var() reference, starting from the |
| 56 // comma. |
55 bool resolveFallback(CSSParserTokenRange, Vector<CSSParserToken>& result); | 57 bool resolveFallback(CSSParserTokenRange, Vector<CSSParserToken>& result); |
56 // Resolves the contents of a var() reference | 58 // Resolves the contents of a var() reference. |
57 bool resolveVariableReference(CSSParserTokenRange, | 59 bool resolveVariableReference(CSSParserTokenRange, |
58 Vector<CSSParserToken>& result); | 60 Vector<CSSParserToken>& result); |
59 // Consumes and resolves an @apply rule | 61 // Consumes and resolves an @apply rule. |
60 void resolveApplyAtRule(CSSParserTokenRange&, Vector<CSSParserToken>& result); | 62 void resolveApplyAtRule(CSSParserTokenRange&, Vector<CSSParserToken>& result); |
61 | 63 |
62 // These return null if the custom property is invalid | 64 // These return null if the custom property is invalid. |
63 | 65 |
64 // Returns the CSSVariableData for a custom property, resolving and storing it
if necessary | 66 // Returns the CSSVariableData for a custom property, resolving and storing it |
| 67 // if necessary. |
65 CSSVariableData* valueForCustomProperty(AtomicString name); | 68 CSSVariableData* valueForCustomProperty(AtomicString name); |
66 // Resolves the CSSVariableData from a custom property declaration | 69 // Resolves the CSSVariableData from a custom property declaration. |
67 PassRefPtr<CSSVariableData> resolveCustomProperty(AtomicString name, | 70 PassRefPtr<CSSVariableData> resolveCustomProperty(AtomicString name, |
68 const CSSVariableData&); | 71 const CSSVariableData&); |
69 | 72 |
70 const StyleResolverState& m_styleResolverState; | 73 const StyleResolverState& m_styleResolverState; |
71 StyleInheritedVariables* m_inheritedVariables; | 74 StyleInheritedVariables* m_inheritedVariables; |
72 StyleNonInheritedVariables* m_nonInheritedVariables; | 75 StyleNonInheritedVariables* m_nonInheritedVariables; |
73 Member<const PropertyRegistry> m_registry; | 76 Member<const PropertyRegistry> m_registry; |
74 HashSet<AtomicString> m_variablesSeen; | 77 HashSet<AtomicString> m_variablesSeen; |
75 // Resolution doesn't finish when a cycle is detected. Fallbacks still | 78 // Resolution doesn't finish when a cycle is detected. Fallbacks still |
76 // need to be tracked for additional cycles, and invalidation only | 79 // need to be tracked for additional cycles, and invalidation only |
77 // applies back to cycle starts. | 80 // applies back to cycle starts. |
78 HashSet<AtomicString> m_cycleStartPoints; | 81 HashSet<AtomicString> m_cycleStartPoints; |
79 }; | 82 }; |
80 | 83 |
81 } // namespace blink | 84 } // namespace blink |
82 | 85 |
83 #endif // CSSVariableResolver | 86 #endif // CSSVariableResolver |
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