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remove visitor pattern

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it's overengineered for our purpose and would just get in the way of
planned optimizations.
This commit is contained in:
Oswald Buddenhagen
2010-02-02 21:00:09 +01:00
parent 699af2f46a
commit a2dbeecdec
7 changed files with 62 additions and 163 deletions
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59
src/shared/proparser/abstractproitemvisitor.h
View File

@@ -1,59 +0,0 @@
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#ifndef ABSTRACTPROITEMVISITOR
#define ABSTRACTPROITEMVISITOR
#include "proitems.h"
QT_BEGIN_NAMESPACE
struct AbstractProItemVisitor
{
virtual ~AbstractProItemVisitor() {}
virtual ProItem::ProItemReturn visitBeginProBlock(ProBlock *block) = 0;
virtual void visitEndProBlock(ProBlock *block) = 0;
virtual ProItem::ProItemReturn visitProLoopIteration() = 0;
virtual void visitProLoopCleanup() = 0;
virtual ProItem::ProItemReturn visitBeginProFile(ProFile *value) = 0;
virtual ProItem::ProItemReturn visitEndProFile(ProFile *value) = 0;
virtual void visitProVariable(ProVariable *variable) = 0;
virtual ProItem::ProItemReturn visitProFunction(ProFunction *function) = 0;
virtual void visitProOperator(ProOperator *function) = 0;
virtual void visitProCondition(ProCondition *function) = 0;
};
QT_END_NAMESPACE
#endif // ABSTRACTPROITEMVISITOR

83
src/shared/proparser/profileevaluator.cpp
View File

@@ -180,7 +180,7 @@ QString ProFileOption::field_sep;
//
///////////////////////////////////////////////////////////////////////
class ProFileEvaluator::Private : public AbstractProItemVisitor
class ProFileEvaluator::Private
{
public:
Private(ProFileEvaluator *q_, ProFileOption *option);
@@ -210,13 +210,11 @@ public:
/////////////// Evaluating pro file contents
// implementation of AbstractProItemVisitor
ProItem::ProItemReturn visitBeginProBlock(ProBlock *block);
void visitEndProBlock(ProBlock *block);
ProItem::ProItemReturn visitProFile(ProFile *pro);
ProItem::ProItemReturn visitProBlock(ProBlock *block);
ProItem::ProItemReturn visitProItem(ProItem *item);
ProItem::ProItemReturn visitProLoopIteration();
void visitProLoopCleanup();
ProItem::ProItemReturn visitBeginProFile(ProFile *value);
ProItem::ProItemReturn visitEndProFile(ProFile *value);
void visitProVariable(ProVariable *variable);
ProItem::ProItemReturn visitProFunction(ProFunction *function);
void visitProOperator(ProOperator *oper);
@@ -812,7 +810,27 @@ static QString fixPathToLocalOS(const QString &str)
//////// Evaluator /////////
ProItem::ProItemReturn ProFileEvaluator::Private::visitBeginProBlock(ProBlock *block)
ProItem::ProItemReturn ProFileEvaluator::Private::visitProItem(ProItem *item)
{
switch (item->kind()) {
case ProItem::BlockKind: // This is never a ProFile
return visitProBlock(static_cast<ProBlock*>(item));
case ProItem::VariableKind:
visitProVariable(static_cast<ProVariable*>(item));
break;
case ProItem::ConditionKind:
visitProCondition(static_cast<ProCondition*>(item));
break;
case ProItem::FunctionKind:
return visitProFunction(static_cast<ProFunction*>(item));
case ProItem::OperatorKind:
visitProOperator(static_cast<ProOperator*>(item));
break;
}
return ProItem::ReturnTrue;
}
ProItem::ProItemReturn ProFileEvaluator::Private::visitProBlock(ProBlock *block)
{
if (block->blockKind() & ProBlock::ScopeContentsKind) {
if (!m_definingFunc.isEmpty()) {
@@ -827,7 +845,7 @@ ProItem::ProItemReturn ProFileEvaluator::Private::visitBeginProBlock(ProBlock *b
block->setBlockKind(block->blockKind() | ProBlock::FunctionBodyKind);
}
m_definingFunc.clear();
return ProItem::ReturnSkip;
return ProItem::ReturnTrue;
} else if (!(block->blockKind() & ProBlock::FunctionBodyKind)) {
if (!m_sts.condition) {
if (m_skipLevel || m_hadCondition)
@@ -847,11 +865,32 @@ ProItem::ProItemReturn ProFileEvaluator::Private::visitBeginProBlock(ProBlock *b
Q_ASSERT(!m_sts.condition);
}
}
return ProItem::ReturnTrue;
}
void ProFileEvaluator::Private::visitEndProBlock(ProBlock *block)
{
ProItem::ProItemReturn rt = ProItem::ReturnTrue;
QList<ProItem *> items = block->items();
for (int i = 0; i < items.count(); ++i) {
rt = visitProItem(items.at(i));
if (rt != ProItem::ReturnTrue && rt != ProItem::ReturnFalse) {
if (rt == ProItem::ReturnLoop) {
rt = ProItem::ReturnTrue;
while (visitProLoopIteration())
for (int j = i; ++j < items.count(); ) {
rt = visitProItem(items.at(j));
if (rt != ProItem::ReturnTrue && rt != ProItem::ReturnFalse) {
if (rt == ProItem::ReturnNext) {
rt = ProItem::ReturnTrue;
break;
}
if (rt == ProItem::ReturnBreak)
rt = ProItem::ReturnTrue;
goto do_break;
}
}
do_break:
visitProLoopCleanup();
}
break;
}
}
if ((block->blockKind() & ProBlock::ScopeContentsKind)
&& !(block->blockKind() & ProBlock::FunctionBodyKind)) {
if (m_skipLevel) {
@@ -863,6 +902,7 @@ void ProFileEvaluator::Private::visitEndProBlock(ProBlock *block)
m_sts.condition = true;
}
}
return rt;
}
ProItem::ProItemReturn ProFileEvaluator::Private::visitProLoopIteration()
@@ -1001,7 +1041,7 @@ void ProFileEvaluator::Private::visitProCondition(ProCondition *cond)
m_invertNext = false;
}
ProItem::ProItemReturn ProFileEvaluator::Private::visitBeginProFile(ProFile * pro)
ProItem::ProItemReturn ProFileEvaluator::Private::visitProFile(ProFile *pro)
{
m_lineNo = pro->lineNumber();
@@ -1124,11 +1164,8 @@ ProItem::ProItemReturn ProFileEvaluator::Private::visitBeginProFile(ProFile * pr
}
}
return ProItem::ReturnTrue;
}
visitProBlock(pro);
ProItem::ProItemReturn ProFileEvaluator::Private::visitEndProFile(ProFile * pro)
{
m_lineNo = pro->lineNumber();
if (m_profileStack.count() == 1) {
@@ -1668,7 +1705,7 @@ QStringList ProFileEvaluator::Private::evaluateFunction(
m_valuemap[QString::number(i+1)] = argumentsList[i];
}
m_valuemap[QLatin1String("ARGS")] = args;
oki = (funcPtr->Accept(this) != ProItem::ReturnFalse); // True || Return
oki = (visitProBlock(funcPtr) != ProItem::ReturnFalse); // True || Return
ret = m_returnValue;
m_returnValue.clear();
@@ -2237,7 +2274,7 @@ ProItem::ProItemReturn ProFileEvaluator::Private::evaluateConditionalFunction(
delete pro;
return ProItem::ReturnFalse;
}
bool ret = pro->Accept(this);
bool ret = visitProBlock(pro);
pro->deref();
return returnBool(ret);
}
@@ -2813,7 +2850,7 @@ bool ProFileEvaluator::Private::evaluateFile(const QString &fileName)
}
if (ProFile *pro = parsedProFile(fileName, true)) {
q->aboutToEval(pro);
bool ok = (pro->Accept(this) == ProItem::ReturnTrue);
bool ok = (visitProFile(pro) == ProItem::ReturnTrue);
pro->deref();
return ok;
} else {
@@ -2869,7 +2906,7 @@ bool ProFileEvaluator::Private::evaluateFeatureFile(
// The path is fully normalized already.
bool ok = false;
if (ProFile *pro = parsedProFile(fn, true)) {
ok = (pro->Accept(this) == ProItem::ReturnTrue);
ok = (visitProFile(pro) == ProItem::ReturnTrue);
pro->deref();
}
@@ -3039,7 +3076,7 @@ ProFile *ProFileEvaluator::parsedProFile(const QString &fileName, const QString
bool ProFileEvaluator::accept(ProFile *pro)
{
return pro->Accept(d);
return d->visitProFile(pro);
}
QString ProFileEvaluator::propertyValue(const QString &name) const

1
src/shared/proparser/profileevaluator.h
View File

@@ -31,7 +31,6 @@
#define PROFILEEVALUATOR_H
#include "proitems.h"
#include "abstractproitemvisitor.h"
#include <QtCore/QIODevice>
#include <QtCore/QHash>

66
src/shared/proparser/proitems.cpp
View File

@@ -28,7 +28,6 @@
**************************************************************************/
#include "proitems.h"
#include "abstractproitemvisitor.h"
#include <QtCore/QFileInfo>
@@ -92,39 +91,6 @@ ProItem::ProItemKind ProBlock::kind() const
return ProItem::BlockKind;
}
ProItem::ProItemReturn ProBlock::Accept(AbstractProItemVisitor *visitor)
{
if (visitor->visitBeginProBlock(this) == ReturnSkip)
return ReturnTrue;
ProItemReturn rt = ReturnTrue;
for (int i = 0; i < m_proitems.count(); ++i) {
rt = m_proitems.at(i)->Accept(visitor);
if (rt != ReturnTrue && rt != ReturnFalse) {
if (rt == ReturnLoop) {
rt = ReturnTrue;
while (visitor->visitProLoopIteration())
for (int j = i; ++j < m_proitems.count(); ) {
rt = m_proitems.at(j)->Accept(visitor);
if (rt != ReturnTrue && rt != ReturnFalse) {
if (rt == ReturnNext) {
rt = ReturnTrue;
break;
}
if (rt == ReturnBreak)
rt = ReturnTrue;
goto do_break;
}
}
do_break:
visitor->visitProLoopCleanup();
}
break;
}
}
visitor->visitEndProBlock(this);
return rt;
}
// --------------- ProVariable ----------------
ProVariable::ProVariable(const QString &name)
{
@@ -167,12 +133,6 @@ ProItem::ProItemKind ProVariable::kind() const
return ProItem::VariableKind;
}
ProItem::ProItemReturn ProVariable::Accept(AbstractProItemVisitor *visitor)
{
visitor->visitProVariable(this);
return ReturnTrue;
}
// --------------- ProFunction ----------------
ProFunction::ProFunction(const QString &text)
{
@@ -194,11 +154,6 @@ ProItem::ProItemKind ProFunction::kind() const
return ProItem::FunctionKind;
}
ProItem::ProItemReturn ProFunction::Accept(AbstractProItemVisitor *visitor)
{
return visitor->visitProFunction(this);
}
// --------------- ProCondition ----------------
ProCondition::ProCondition(const QString &text)
{
@@ -220,12 +175,6 @@ ProItem::ProItemKind ProCondition::kind() const
return ProItem::ConditionKind;
}
ProItem::ProItemReturn ProCondition::Accept(AbstractProItemVisitor *visitor)
{
visitor->visitProCondition(this);
return ReturnTrue;
}
// --------------- ProOperator ----------------
ProOperator::ProOperator(OperatorKind operatorKind)
{
@@ -247,12 +196,6 @@ ProItem::ProItemKind ProOperator::kind() const
return ProItem::OperatorKind;
}
ProItem::ProItemReturn ProOperator::Accept(AbstractProItemVisitor *visitor)
{
visitor->visitProOperator(this);
return ReturnTrue;
}
// --------------- ProFile ----------------
ProFile::ProFile(const QString &fileName)
: ProBlock(0)
@@ -286,13 +229,4 @@ QString ProFile::directoryName() const
return m_directoryName;
}
ProItem::ProItemReturn ProFile::Accept(AbstractProItemVisitor *visitor)
{
ProItemReturn rt;
if ((rt = visitor->visitBeginProFile(this)) != ReturnTrue)
return rt;
ProBlock::Accept(visitor); // cannot fail
return visitor->visitEndProFile(this);
}
QT_END_NAMESPACE

13
src/shared/proparser/proitems.h
View File

@@ -35,8 +35,6 @@
QT_BEGIN_NAMESPACE
struct AbstractProItemVisitor;
class ProItem
{
public:
@@ -64,7 +62,6 @@ public:
virtual ProItemKind kind() const = 0;
virtual ProItemReturn Accept(AbstractProItemVisitor *visitor) = 0;
int lineNumber() const { return m_lineNumber; }
void setLineNumber(int lineNumber) { m_lineNumber = lineNumber; }
@@ -102,11 +99,9 @@ public:
ProItem::ProItemKind kind() const;
virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);
protected:
QList<ProItem *> m_proitems;
private:
ProBlock *m_parent;
QList<ProItem *> m_proitems;
int m_blockKind;
int m_refCount;
};
@@ -135,7 +130,6 @@ public:
ProItem::ProItemKind kind() const;
virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);
private:
VariableOperator m_variableKind;
QString m_variable;
@@ -152,7 +146,6 @@ public:
ProItem::ProItemKind kind() const;
virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);
private:
QString m_text;
};
@@ -167,7 +160,6 @@ public:
ProItem::ProItemKind kind() const;
virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);
private:
QString m_text;
};
@@ -187,7 +179,6 @@ public:
ProItem::ProItemKind kind() const;
virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);
private:
OperatorKind m_operatorKind;
};
@@ -202,8 +193,6 @@ public:
QString fileName() const;
QString directoryName() const;
virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);
private:
QString m_fileName;
QString m_displayFileName;

1
src/shared/proparser/proparser.pri
View File

@@ -6,7 +6,6 @@ DEPENDPATH *= $$PWD $$PWD/..
# Input
HEADERS += \
abstractproitemvisitor.h \
profileevaluator.h \
proitems.h \
prowriter.h \

2
tests/manual/proparser/testreader.pro
View File

@@ -15,6 +15,6 @@ build_all:!build_pass {
}
SOURCES = main.cpp profileevaluator.cpp proitems.cpp ioutils.cpp
HEADERS = profileevaluator.h proitems.h abstractproitemvisitor.h ioutils.h
HEADERS = profileevaluator.h proitems.h ioutils.h
DEFINES += QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_ASCII