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/**************************************************************************
**
** 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.
**
**************************************************************************/
// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#include "CheckDeclarator.h"
#include "Semantic.h"
#include "AST.h"
#include "Control.h"
#include "TranslationUnit.h"
#include "Literals.h"
#include "CoreTypes.h"
#include "Symbols.h"
CPLUSPLUS_BEGIN_NAMESPACE
CheckDeclarator::CheckDeclarator(Semantic *semantic)
: SemanticCheck(semantic),
_declarator(0),
_scope(0),
_name(0)
{ }
CheckDeclarator::~CheckDeclarator()
{ }
FullySpecifiedType CheckDeclarator::check(DeclaratorAST *declarator,
FullySpecifiedType type,
Scope *scope,
Name **name)
{
FullySpecifiedType previousType = switchFullySpecifiedType(type);
Scope *previousScope = switchScope(scope);
DeclaratorAST *previousDeclarator = switchDeclarator(declarator);
Name **previousName = switchName(name);
accept(declarator);
(void) switchName(previousName);
(void) switchDeclarator(previousDeclarator);
(void) switchScope(previousScope);
return switchFullySpecifiedType(previousType);
}
FullySpecifiedType CheckDeclarator::check(PtrOperatorAST *ptrOperators,
FullySpecifiedType type,
Scope *scope)
{
FullySpecifiedType previousType = switchFullySpecifiedType(type);
Scope *previousScope = switchScope(scope);
accept(ptrOperators);
(void) switchScope(previousScope);
return switchFullySpecifiedType(previousType);
}
FullySpecifiedType CheckDeclarator::check(ObjCMethodPrototypeAST *methodPrototype,
Scope *scope)
{
Scope *previousScope = switchScope(scope);
accept(methodPrototype);
(void) switchScope(previousScope);
return _fullySpecifiedType;
}
DeclaratorAST *CheckDeclarator::switchDeclarator(DeclaratorAST *declarator)
{
DeclaratorAST *previousDeclarator = _declarator;
_declarator = declarator;
return previousDeclarator;
}
FullySpecifiedType CheckDeclarator::switchFullySpecifiedType(FullySpecifiedType type)
{
FullySpecifiedType previousType = _fullySpecifiedType;
_fullySpecifiedType = type;
return previousType;
}
Scope *CheckDeclarator::switchScope(Scope *scope)
{
Scope *previousScope = _scope;
_scope = scope;
return previousScope;
}
Name **CheckDeclarator::switchName(Name **name)
{
Name **previousName = _name;
_name = name;
return previousName;
}
bool CheckDeclarator::visit(DeclaratorAST *ast)
{
accept(ast->ptr_operators);
accept(ast->postfix_declarators);
accept(ast->core_declarator);
if (ast->initializer) {
FullySpecifiedType exprTy = semantic()->check(ast->initializer, _scope);
if (Function *funTy = _fullySpecifiedType->asFunctionType())
funTy->setPureVirtual(true);
}
return false;
}
bool CheckDeclarator::visit(DeclaratorIdAST *ast)
{
Name *name = semantic()->check(ast->name, _scope);
if (_name)
*_name = name;
return false;
}
bool CheckDeclarator::visit(NestedDeclaratorAST *ast)
{
accept(ast->declarator);
return false;
}
bool CheckDeclarator::visit(FunctionDeclaratorAST *ast)
{
Function *fun = control()->newFunction(ast->firstToken());
fun->setAmbiguous(ast->as_cpp_initializer != 0);
ast->symbol = fun;
fun->setReturnType(_fullySpecifiedType);
if (ast->parameters) {
DeclarationListAST *parameter_declarations = ast->parameters->parameter_declarations;
for (DeclarationListAST *decl = parameter_declarations; decl; decl = decl->next) {
semantic()->check(decl->declaration, fun->arguments());
}
if (ast->parameters->dot_dot_dot_token)
fun->setVariadic(true);
}
// check the arguments
bool hasDefaultArguments = false;
for (unsigned i = 0; i < fun->argumentCount(); ++i) {
Argument *arg = fun->argumentAt(i)->asArgument();
if (hasDefaultArguments && ! arg->hasInitializer()) {
translationUnit()->error(ast->firstToken(),
"default argument missing for parameter at position %d", i + 1);
} else if (! hasDefaultArguments) {
hasDefaultArguments = arg->hasInitializer();
}
}
FullySpecifiedType funTy(fun);
_fullySpecifiedType = funTy;
for (SpecifierAST *it = ast->cv_qualifier_seq; it; it = it->next) {
SimpleSpecifierAST *cv = static_cast<SimpleSpecifierAST *>(it);
int k = tokenKind(cv->specifier_token);
if (k == T_CONST)
fun->setConst(true);
else if (k == T_VOLATILE)
fun->setVolatile(true);
}
accept(ast->next);
return false;
}
bool CheckDeclarator::visit(ArrayDeclaratorAST *ast)
{
ArrayType *ty = control()->arrayType(_fullySpecifiedType); // ### set the dimension
FullySpecifiedType exprTy = semantic()->check(ast->expression, _scope);
FullySpecifiedType arrTy(ty);
_fullySpecifiedType = ty;
accept(ast->next);
return false;
}
bool CheckDeclarator::visit(PointerToMemberAST *ast)
{
Name *memberName = semantic()->check(ast->nested_name_specifier, _scope);
PointerToMemberType *ptrTy = control()->pointerToMemberType(memberName, _fullySpecifiedType);
FullySpecifiedType ty(ptrTy);
_fullySpecifiedType = ty;
applyCvQualifiers(ast->cv_qualifier_seq);
accept(ast->next);
return false;
}
bool CheckDeclarator::visit(PointerAST *ast)
{
PointerType *ptrTy = control()->pointerType(_fullySpecifiedType);
FullySpecifiedType ty(ptrTy);
_fullySpecifiedType = ty;
applyCvQualifiers(ast->cv_qualifier_seq);
accept(ast->next);
return false;
}
bool CheckDeclarator::visit(ReferenceAST *ast)
{
ReferenceType *refTy = control()->referenceType(_fullySpecifiedType);
FullySpecifiedType ty(refTy);
_fullySpecifiedType = ty;
accept(ast->next);
return false;
}
bool CheckDeclarator::visit(ObjCMethodPrototypeAST *ast)
{
FullySpecifiedType returnType = semantic()->check(ast->type_name, _scope);
unsigned location = ast->firstToken();
Name *name = semantic()->check(ast->selector, _scope);
ObjCMethod *method = control()->newObjCMethod(location, name);
ast->symbol = method;
method->setSourceLocation(location);
method->setScope(_scope);
method->setVisibility(semantic()->currentVisibility());
method->setReturnType(returnType);
if (ast->selector && ast->selector->asObjCSelectorWithArguments()) {
// TODO: check the parameters (EV)
// fun->setVariadic(...);
// TODO: add arguments (EV)
for (ObjCMessageArgumentDeclarationListAST *it = ast->arguments; it; it = it->next) {
ObjCMessageArgumentDeclarationAST *argDecl = it->argument_declaration;
semantic()->check(argDecl, method->arguments());
}
}
_fullySpecifiedType = FullySpecifiedType(method);
// TODO: check which specifiers are allowed here (EV)
return false;
}
void CheckDeclarator::applyCvQualifiers(SpecifierAST *cv)
{
for (; cv; cv = cv->next) {
SimpleSpecifierAST *spec = static_cast<SimpleSpecifierAST *>(cv);
switch (translationUnit()->tokenKind(spec->specifier_token)) {
case T_VOLATILE:
_fullySpecifiedType.setVolatile(true);
break;
case T_CONST:
_fullySpecifiedType.setConst(true);
break;
default:
break;
} // switch
}
}
CPLUSPLUS_END_NAMESPACE
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