Qt 4.8
qt-4.8.6
src
xmlpatterns
expr
qorexpression.cpp
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/****************************************************************************
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU
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****************************************************************************/
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#include "
qboolean_p.h
"
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#include "
qcommonvalues_p.h
"
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#include "
qliteral_p.h
"
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#include "
qorexpression_p.h
"
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QT_BEGIN_NAMESPACE
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using namespace
QPatternist
;
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OrExpression::OrExpression
(
const
Expression::Ptr
&operand1,
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const
Expression::Ptr
&operand2) :
AndExpression
(operand1, operand2)
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{
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}
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bool
OrExpression::evaluateEBV
(
const
DynamicContext::Ptr
&context)
const
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{
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return
m_operand1
->
evaluateEBV
(context) ||
m_operand2
->
evaluateEBV
(context);
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}
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Expression::Ptr
OrExpression::compress
(
const
StaticContext::Ptr
&context)
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{
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const
Expression::Ptr
newMe(
PairContainer::compress
(context));
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if
(newMe !=
this
)
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return
newMe;
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/* Both operands mustn't be evaluated in order to be able to compress. */
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if
(
m_operand1
->
isEvaluated
() &&
m_operand1
->
evaluateEBV
(context->
dynamicContext
()))
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return
wrapLiteral(
CommonValues::BooleanTrue
, context,
this
);
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else
if
(
m_operand2
->
isEvaluated
() &&
m_operand2
->
evaluateEBV
(context->
dynamicContext
()))
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return
wrapLiteral(
CommonValues::BooleanTrue
, context,
this
);
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else
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return
Expression::Ptr
(
this
);
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}
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ExpressionVisitorResult::Ptr
OrExpression::accept
(
const
ExpressionVisitor::Ptr
&visitor)
const
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{
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return
visitor->visit(
this
);
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}
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QT_END_NAMESPACE
QPatternist::OrExpression::compress
virtual Expression::Ptr compress(const StaticContext::Ptr &context)
Definition:
qorexpression.cpp:62
QT_END_NAMESPACE
#define QT_END_NAMESPACE
This macro expands to.
Definition:
qglobal.h:90
QPatternist::OrExpression::OrExpression
OrExpression(const Expression::Ptr &operand1, const Expression::Ptr &operand2)
Definition:
qorexpression.cpp:52
QPatternist::CommonValues::BooleanTrue
static const AtomicValue::Ptr BooleanTrue
Definition:
qcommonvalues_p.h:112
qcommonvalues_p.h
QPatternist::Expression::evaluateEBV
virtual bool evaluateEBV(const DynamicContext::Ptr &context) const
Definition:
qexpression.cpp:315
QExplicitlySharedDataPointer< Expression >
qboolean_p.h
QPatternist::Expression::compress
virtual Expression::Ptr compress(const StaticContext::Ptr &context)
Definition:
qexpression.cpp:241
QT_BEGIN_NAMESPACE
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition:
qglobal.h:89
QPatternist
The namespace for the internal API of QtXmlPatterns.
Definition:
qacceliterators_p.h:62
QPatternist::OrExpression::accept
virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const
Definition:
qorexpression.cpp:78
qorexpression_p.h
QPatternist::Expression::Ptr
QExplicitlySharedDataPointer< Expression > Ptr
A smart pointer wrapping mutable Expression instances.
Definition:
qexpression_p.h:173
QPatternist::OrExpression::evaluateEBV
virtual bool evaluateEBV(const DynamicContext::Ptr &context) const
Definition:
qorexpression.cpp:57
QPatternist::StaticContext::dynamicContext
virtual QExplicitlySharedDataPointer< DynamicContext > dynamicContext() const =0
qliteral_p.h
QPatternist::PairContainer::m_operand1
Expression::Ptr m_operand1
Definition:
qpaircontainer_p.h:80
QPatternist::PairContainer::m_operand2
Expression::Ptr m_operand2
Definition:
qpaircontainer_p.h:81
QPatternist::Expression::isEvaluated
bool isEvaluated() const
Definition:
qexpression_p.h:861
QPatternist::AndExpression
Implements XPath 2.0's logical expression and.
Definition:
qandexpression_p.h:74
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