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1 /* | 1 /* |
2 * Copyright 2005 Frerich Raabe <raabe@kde.org> | 2 * Copyright 2005 Frerich Raabe <raabe@kde.org> |
3 * Copyright (C) 2006 Apple Computer, Inc. | 3 * Copyright (C) 2006 Apple Computer, Inc. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * | 8 * |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
(...skipping 14 matching lines...) Expand all Loading... |
25 */ | 25 */ |
26 | 26 |
27 #ifndef XPathPredicate_h | 27 #ifndef XPathPredicate_h |
28 #define XPathPredicate_h | 28 #define XPathPredicate_h |
29 | 29 |
30 #include "core/xml/XPathExpressionNode.h" | 30 #include "core/xml/XPathExpressionNode.h" |
31 #include "core/xml/XPathValue.h" | 31 #include "core/xml/XPathValue.h" |
32 | 32 |
33 namespace WebCore { | 33 namespace WebCore { |
34 | 34 |
35 namespace XPath { | 35 namespace XPath { |
36 | 36 |
37 class Number FINAL : public Expression { | 37 class Number FINAL : public Expression { |
38 public: | 38 public: |
39 explicit Number(double); | 39 explicit Number(double); |
40 virtual void trace(Visitor*) OVERRIDE; | 40 virtual void trace(Visitor*) OVERRIDE; |
41 | 41 |
42 private: | 42 private: |
43 virtual Value evaluate() const OVERRIDE; | 43 virtual Value evaluate() const OVERRIDE; |
44 virtual Value::Type resultType() const OVERRIDE { return Value::Numb
erValue; } | 44 virtual Value::Type resultType() const OVERRIDE { return Value::NumberValue;
} |
45 | 45 |
46 Value m_value; | 46 Value m_value; |
47 }; | 47 }; |
48 | 48 |
49 class StringExpression FINAL : public Expression { | 49 class StringExpression FINAL : public Expression { |
50 public: | 50 public: |
51 explicit StringExpression(const String&); | 51 explicit StringExpression(const String&); |
52 virtual void trace(Visitor*) OVERRIDE; | 52 virtual void trace(Visitor*) OVERRIDE; |
53 | 53 |
54 private: | 54 private: |
55 virtual Value evaluate() const OVERRIDE; | 55 virtual Value evaluate() const OVERRIDE; |
56 virtual Value::Type resultType() const OVERRIDE { return Value::Stri
ngValue; } | 56 virtual Value::Type resultType() const OVERRIDE { return Value::StringValue;
} |
57 | 57 |
58 Value m_value; | 58 Value m_value; |
59 }; | 59 }; |
60 | 60 |
61 class Negative FINAL : public Expression { | 61 class Negative FINAL : public Expression { |
62 private: | 62 private: |
63 virtual Value evaluate() const OVERRIDE; | 63 virtual Value evaluate() const OVERRIDE; |
64 virtual Value::Type resultType() const OVERRIDE { return Value::Numb
erValue; } | 64 virtual Value::Type resultType() const OVERRIDE { return Value::NumberValue;
} |
65 }; | 65 }; |
66 | 66 |
67 class NumericOp FINAL : public Expression { | 67 class NumericOp FINAL : public Expression { |
68 public: | 68 public: |
69 enum Opcode { | 69 enum Opcode { |
70 OP_Add, OP_Sub, OP_Mul, OP_Div, OP_Mod | 70 OP_Add, OP_Sub, OP_Mul, OP_Div, OP_Mod |
71 }; | 71 }; |
72 NumericOp(Opcode, PassOwnPtrWillBeRawPtr<Expression> lhs, PassOwnPtr
WillBeRawPtr<Expression> rhs); | 72 NumericOp(Opcode, PassOwnPtrWillBeRawPtr<Expression> lhs, PassOwnPtrWillBeRa
wPtr<Expression> rhs); |
73 private: | |
74 virtual Value evaluate() const OVERRIDE; | |
75 virtual Value::Type resultType() const OVERRIDE { return Value::Numb
erValue; } | |
76 | 73 |
77 Opcode m_opcode; | 74 private: |
78 }; | 75 virtual Value evaluate() const OVERRIDE; |
| 76 virtual Value::Type resultType() const OVERRIDE { return Value::NumberValue;
} |
79 | 77 |
80 class EqTestOp FINAL : public Expression { | 78 Opcode m_opcode; |
81 public: | 79 }; |
82 enum Opcode { OP_EQ, OP_NE, OP_GT, OP_LT, OP_GE, OP_LE }; | |
83 EqTestOp(Opcode, PassOwnPtrWillBeRawPtr<Expression> lhs, PassOwnPtrW
illBeRawPtr<Expression> rhs); | |
84 virtual Value evaluate() const OVERRIDE; | |
85 private: | |
86 virtual Value::Type resultType() const OVERRIDE { return Value::Bool
eanValue; } | |
87 bool compare(const Value&, const Value&) const; | |
88 | 80 |
89 Opcode m_opcode; | 81 class EqTestOp FINAL : public Expression { |
90 }; | 82 public: |
| 83 enum Opcode { OpcodeEqual, OpcodeNotEqual, OpcodeGreaterThan, OpcodeLessThan
, OpcodeGreaterOrEqual, OpcodeLessOrEqual }; |
| 84 EqTestOp(Opcode, PassOwnPtrWillBeRawPtr<Expression> lhs, PassOwnPtrWillBeRaw
Ptr<Expression> rhs); |
| 85 virtual Value evaluate() const OVERRIDE; |
91 | 86 |
92 class LogicalOp FINAL : public Expression { | 87 private: |
93 public: | 88 virtual Value::Type resultType() const OVERRIDE { return Value::BooleanValue
; } |
94 enum Opcode { OP_And, OP_Or }; | 89 bool compare(const Value&, const Value&) const; |
95 LogicalOp(Opcode, PassOwnPtrWillBeRawPtr<Expression> lhs, PassOwnPtr
WillBeRawPtr<Expression> rhs); | |
96 private: | |
97 virtual Value::Type resultType() const OVERRIDE { return Value::Bool
eanValue; } | |
98 bool shortCircuitOn() const; | |
99 virtual Value evaluate() const OVERRIDE; | |
100 | 90 |
101 Opcode m_opcode; | 91 Opcode m_opcode; |
102 }; | 92 }; |
103 | 93 |
104 class Union FINAL : public Expression { | 94 class LogicalOp FINAL : public Expression { |
105 private: | 95 public: |
106 virtual Value evaluate() const OVERRIDE; | 96 enum Opcode { OP_And, OP_Or }; |
107 virtual Value::Type resultType() const OVERRIDE { return Value::Node
SetValue; } | 97 LogicalOp(Opcode, PassOwnPtrWillBeRawPtr<Expression> lhs, PassOwnPtrWillBeRa
wPtr<Expression> rhs); |
108 }; | |
109 | 98 |
110 class Predicate FINAL : public NoBaseWillBeGarbageCollected<Predicate> { | 99 private: |
111 WTF_MAKE_NONCOPYABLE(Predicate); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REM
OVED; | 100 virtual Value::Type resultType() const OVERRIDE { return Value::BooleanValue
; } |
112 DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(Predicate); | 101 bool shortCircuitOn() const; |
113 public: | 102 virtual Value evaluate() const OVERRIDE; |
114 explicit Predicate(PassOwnPtrWillBeRawPtr<Expression>); | |
115 void trace(Visitor*); | |
116 bool evaluate() const; | |
117 | 103 |
118 bool isContextPositionSensitive() const { return m_expr->isContextPo
sitionSensitive() || m_expr->resultType() == Value::NumberValue; } | 104 Opcode m_opcode; |
119 bool isContextSizeSensitive() const { return m_expr->isContextSizeSe
nsitive(); } | 105 }; |
120 | 106 |
121 private: | 107 class Union FINAL : public Expression { |
122 OwnPtrWillBeMember<Expression> m_expr; | 108 private: |
123 }; | 109 virtual Value evaluate() const OVERRIDE; |
| 110 virtual Value::Type resultType() const OVERRIDE { return Value::NodeSetValue
; } |
| 111 }; |
124 | 112 |
125 } | 113 class Predicate FINAL : public NoBaseWillBeGarbageCollected<Predicate> { |
| 114 WTF_MAKE_NONCOPYABLE(Predicate); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED; |
| 115 DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(Predicate); |
| 116 public: |
| 117 explicit Predicate(PassOwnPtrWillBeRawPtr<Expression>); |
| 118 void trace(Visitor*); |
| 119 |
| 120 bool evaluate() const; |
| 121 bool isContextPositionSensitive() const { return m_expr->isContextPositionSe
nsitive() || m_expr->resultType() == Value::NumberValue; } |
| 122 bool isContextSizeSensitive() const { return m_expr->isContextSizeSensitive(
); } |
| 123 |
| 124 private: |
| 125 OwnPtrWillBeMember<Expression> m_expr; |
| 126 }; |
126 | 127 |
127 } | 128 } |
128 | 129 |
| 130 } |
129 #endif // XPathPredicate_h | 131 #endif // XPathPredicate_h |
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