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author | Upstream <upstream-import@none> | 1970-01-12 13:46:40 +0000 |
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committer | Upstream <upstream-import@none> | 1970-01-12 13:46:40 +0000 |
commit | d8543bb6618c17b12da906afa77d216f58cf4058 (patch) | |
tree | c58dc05ed86825bd0ef8d305d58c8205106b540f /WebCore/xml/XPathPredicate.h | |
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external/webkit r30707
Diffstat (limited to 'WebCore/xml/XPathPredicate.h')
-rw-r--r-- | WebCore/xml/XPathPredicate.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/WebCore/xml/XPathPredicate.h b/WebCore/xml/XPathPredicate.h new file mode 100644 index 0000000..8d1b0d8 --- /dev/null +++ b/WebCore/xml/XPathPredicate.h @@ -0,0 +1,111 @@ +/* + * Copyright 2005 Frerich Raabe <raabe@kde.org> + * Copyright (C) 2006 Apple Computer, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef XPathPredicate_h +#define XPathPredicate_h + +#if ENABLE(XPATH) + +#include "XPathExpressionNode.h" +#include "XPathValue.h" + +namespace WebCore { + + namespace XPath { + + class Number : public Expression { + public: + Number(double); + private: + virtual Value evaluate() const; + Value m_value; + }; + + class StringExpression : public Expression { + public: + StringExpression(const String&); + private: + virtual Value evaluate() const; + Value m_value; + }; + + class Negative : public Expression { + private: + virtual Value evaluate() const; + }; + + class NumericOp : public Expression { + public: + enum Opcode { + OP_Add, OP_Sub, OP_Mul, OP_Div, OP_Mod + }; + NumericOp(Opcode, Expression* lhs, Expression* rhs); + private: + virtual Value evaluate() const; + Opcode m_opcode; + }; + + class EqTestOp : public Expression { + public: + enum Opcode { OP_EQ, OP_NE, OP_GT, OP_LT, OP_GE, OP_LE }; + EqTestOp(Opcode, Expression* lhs, Expression* rhs); + virtual Value evaluate() const; + private: + bool compare(const Value&, const Value&) const; + Opcode m_opcode; + }; + + class LogicalOp : public Expression { + public: + enum Opcode { OP_And, OP_Or }; + LogicalOp(Opcode, Expression* lhs, Expression* rhs); + private: + bool shortCircuitOn() const; + virtual Value evaluate() const; + Opcode m_opcode; + }; + + class Union : public Expression { + private: + virtual Value evaluate() const; + }; + + class Predicate : Noncopyable { + public: + Predicate(Expression*); + ~Predicate(); + bool evaluate() const; + private: + Expression* m_expr; + }; + + } + +} + +#endif // ENABLE(XPATH) + +#endif // XPathPredicate_h |