forked from qt-creator/qt-creator
Introduced helpers to rewrite types and names.
Done-with: Erik Verbruggen
This commit is contained in:
Roberto Raggi
364
src/libs/cplusplus/CppRewriter.cpp
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364
src/libs/cplusplus/CppRewriter.cpp
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@@ -0,0 +1,364 @@
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/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "CppRewriter.h"
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#include <TypeVisitor.h>
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#include <NameVisitor.h>
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#include <CoreTypes.h>
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#include <Symbols.h>
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#include <Literals.h>
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#include <Names.h>
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#include <Scope.h>
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#include <QtCore/QVarLengthArray>
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#include <QtCore/QDebug>
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using namespace CPlusPlus;
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class CPlusPlus::Rewrite
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{
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public:
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Rewrite(Control *control, const SubstitutionEnvironment &env)
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: control(control), env(env), rewriteType(this), rewriteName(this) {}
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class RewriteType: public TypeVisitor
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{
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Rewrite *rewrite;
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QList<FullySpecifiedType> temps;
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Control *control() const
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{ return rewrite->control; }
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void accept(const FullySpecifiedType &ty)
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{
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TypeVisitor::accept(ty.type());
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unsigned flags = ty.flags();
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flags |= temps.back().flags();
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temps.back().setFlags(flags);
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}
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public:
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RewriteType(Rewrite *r): rewrite(r) {}
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FullySpecifiedType operator()(const FullySpecifiedType &ty)
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{
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accept(ty);
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return temps.takeLast();
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}
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virtual void visit(UndefinedType *)
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{
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temps.append(FullySpecifiedType());
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}
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virtual void visit(VoidType *)
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{
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temps.append(control()->voidType());
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}
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virtual void visit(IntegerType *type)
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{
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temps.append(control()->integerType(type->kind()));
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}
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virtual void visit(FloatType *type)
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{
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temps.append(control()->floatType(type->kind()));
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}
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virtual void visit(PointerToMemberType *type)
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{
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const Name *memberName = rewrite->rewriteName(type->memberName());
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const FullySpecifiedType elementType = rewrite->rewriteType(type->elementType());
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temps.append(control()->pointerToMemberType(memberName, elementType));
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}
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virtual void visit(PointerType *type)
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{
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const FullySpecifiedType elementType = rewrite->rewriteType(type->elementType());
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temps.append(control()->pointerType(elementType));
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}
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virtual void visit(ReferenceType *type)
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{
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const FullySpecifiedType elementType = rewrite->rewriteType(type->elementType());
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temps.append(control()->referenceType(elementType));
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}
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virtual void visit(ArrayType *type)
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{
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const FullySpecifiedType elementType = rewrite->rewriteType(type->elementType());
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temps.append(control()->arrayType(elementType, type->size()));
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}
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virtual void visit(NamedType *type)
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{
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FullySpecifiedType ty = rewrite->env.apply(type->name(), rewrite);
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if (! ty->isUndefinedType())
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temps.append(rewrite->rewriteType(ty));
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else {
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const Name *name = rewrite->rewriteName(type->name());
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temps.append(control()->namedType(name));
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}
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}
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virtual void visit(Function *type)
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{
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Function *funTy = control()->newFunction(0, 0);
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funTy->copy(type);
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funTy->setName(rewrite->rewriteName(type->name()));
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funTy->setReturnType(rewrite->rewriteType(type->returnType()));
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for (unsigned i = 0; i < type->argumentCount(); ++i) {
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Symbol *arg = type->argumentAt(i);
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Argument *newArg = control()->newArgument(0, 0);
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newArg->copy(arg);
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newArg->setName(rewrite->rewriteName(arg->name()));
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newArg->setType(rewrite->rewriteType(arg->type()));
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funTy->arguments()->enterSymbol(newArg);
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}
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temps.append(funTy);
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}
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virtual void visit(Namespace *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(Class *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(Enum *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(ForwardClassDeclaration *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(ObjCClass *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(ObjCProtocol *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(ObjCMethod *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(ObjCForwardClassDeclaration *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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virtual void visit(ObjCForwardProtocolDeclaration *type)
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{
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qWarning() << Q_FUNC_INFO;
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temps.append(type);
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}
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};
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class RewriteName: public NameVisitor
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{
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Rewrite *rewrite;
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QList<const Name *> temps;
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Control *control() const
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{ return rewrite->control; }
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const Identifier *identifier(const Identifier *other) const
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{
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if (! other)
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return 0;
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return control()->findOrInsertIdentifier(other->chars(), other->size());
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}
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public:
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RewriteName(Rewrite *r): rewrite(r) {}
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const Name *operator()(const Name *name)
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{
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if (! name)
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return 0;
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accept(name);
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return temps.takeLast();
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}
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virtual void visit(const QualifiedNameId *name)
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{
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const Name *base = rewrite->rewriteName(name->base());
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const Name *n = rewrite->rewriteName(name->name());
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temps.append(control()->qualifiedNameId(base, n));
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}
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virtual void visit(const NameId *name)
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{
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temps.append(control()->nameId(identifier(name->identifier())));
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}
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virtual void visit(const TemplateNameId *name)
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{
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QVarLengthArray<FullySpecifiedType, 8> args(name->templateArgumentCount());
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for (unsigned i = 0; i < name->templateArgumentCount(); ++i)
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args[i] = rewrite->rewriteType(name->templateArgumentAt(i));
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temps.append(control()->templateNameId(identifier(name->identifier()), args.data(), args.size()));
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}
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virtual void visit(const DestructorNameId *name)
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{
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temps.append(control()->destructorNameId(identifier(name->identifier())));
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}
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virtual void visit(const OperatorNameId *name)
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{
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temps.append(control()->operatorNameId(name->kind()));
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}
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virtual void visit(const ConversionNameId *name)
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{
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FullySpecifiedType ty = rewrite->rewriteType(name->type());
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temps.append(control()->conversionNameId(ty));
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}
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virtual void visit(const SelectorNameId *name)
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{
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QVarLengthArray<const Name *, 8> names(name->nameCount());
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for (unsigned i = 0; i < name->nameCount(); ++i)
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names[i] = rewrite->rewriteName(name->nameAt(i));
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temps.append(control()->selectorNameId(names.constData(), names.size(), name->hasArguments()));
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}
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};
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public: // attributes
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Control *control;
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SubstitutionEnvironment env;
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RewriteType rewriteType;
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RewriteName rewriteName;
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};
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ContextSubstitution::ContextSubstitution(const LookupContext &context, Scope *scope)
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: _context(context), _scope(scope)
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{
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}
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ContextSubstitution::~ContextSubstitution()
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{
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}
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FullySpecifiedType ContextSubstitution::apply(const Name *name, Rewrite *rewrite) const
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{
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const QList<LookupItem> candidates = _context.lookup(name, _scope);
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foreach (const LookupItem &r, candidates) {
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Symbol *s = r.declaration();
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if (s->isDeclaration() && s->isTypedef()) {
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qDebug() << "resolved typedef:" << s->fileName() << s->line() << s->column();
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qDebug() << "scope is:" << r.scope()->owner()->fileName()
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<< r.scope()->owner()->line()
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<< r.scope()->owner()->column();
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ContextSubstitution subst(_context, s->scope());
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rewrite->env.enter(&subst);
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FullySpecifiedType ty = rewrite->rewriteType(s->type());
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rewrite->env.leave();
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return ty;
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}
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}
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return FullySpecifiedType();
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}
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SubstitutionMap::SubstitutionMap()
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{
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}
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SubstitutionMap::~SubstitutionMap()
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{
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}
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void SubstitutionMap::bind(const Name *name, const FullySpecifiedType &ty)
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{
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_map.append(qMakePair(name, ty));
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}
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FullySpecifiedType SubstitutionMap::apply(const Name *name, Rewrite *) const
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{
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for (int n = _map.size() - 1; n != -1; --n) {
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const QPair<const Name *, FullySpecifiedType> &p = _map.at(n);
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if (name->isEqualTo(p.first))
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return p.second;
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}
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return FullySpecifiedType();
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}
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FullySpecifiedType CPlusPlus::rewriteType(const FullySpecifiedType &type,
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const SubstitutionEnvironment &env,
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Control *control)
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{
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Rewrite rewrite(control, env);
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return rewrite.rewriteType(type);
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}
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const Name *CPlusPlus::rewriteName(const Name *name,
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const SubstitutionEnvironment &env,
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Control *control)
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{
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Rewrite rewrite(control, env);
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return rewrite.rewriteName(name);
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}
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