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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#ifndef GLSLSEMANTIC_H
#define GLSLSEMANTIC_H
#include "glslastvisitor.h"
#include "glsltype.h"
namespace GLSL {
class GLSL_EXPORT Semantic: protected Visitor
{
public:
Semantic();
virtual ~Semantic();
struct ExprResult {
ExprResult(const Type *type = 0, bool isConstant = false)
: type(type), isConstant(isConstant) {}
~ExprResult() { }
bool isValid() const {
if (! type)
return false;
else if (type->asUndefinedType() != 0)
return false;
return true;
}
operator bool() const { return isValid(); }
const Type *type;
bool isConstant;
};
void translationUnit(TranslationUnitAST *ast, Scope *globalScope, Engine *engine);
ExprResult expression(ExpressionAST *ast, Scope *scope, Engine *engine);
protected:
Engine *switchEngine(Engine *engine);
Scope *switchScope(Scope *scope);
bool implicitCast(const Type *type, const Type *target) const;
ExprResult expression(ExpressionAST *ast);
void statement(StatementAST *ast);
const Type *type(TypeAST *ast);
void declaration(DeclarationAST *ast);
ExprResult functionIdentifier(FunctionIdentifierAST *ast);
Symbol *field(StructTypeAST::Field *ast);
void parameterDeclaration(ParameterDeclarationAST *ast, Function *fun);
virtual bool visit(TranslationUnitAST *ast);
virtual bool visit(FunctionIdentifierAST *ast);
virtual bool visit(StructTypeAST::Field *ast);
// expressions
virtual bool visit(IdentifierExpressionAST *ast);
virtual bool visit(LiteralExpressionAST *ast);
virtual bool visit(BinaryExpressionAST *ast);
virtual bool visit(UnaryExpressionAST *ast);
virtual bool visit(TernaryExpressionAST *ast);
virtual bool visit(AssignmentExpressionAST *ast);
virtual bool visit(MemberAccessExpressionAST *ast);
virtual bool visit(FunctionCallExpressionAST *ast);
virtual bool visit(DeclarationExpressionAST *ast);
// statements
virtual bool visit(ExpressionStatementAST *ast);
virtual bool visit(CompoundStatementAST *ast);
virtual bool visit(IfStatementAST *ast);
virtual bool visit(WhileStatementAST *ast);
virtual bool visit(DoStatementAST *ast);
virtual bool visit(ForStatementAST *ast);
virtual bool visit(JumpStatementAST *ast);
virtual bool visit(ReturnStatementAST *ast);
virtual bool visit(SwitchStatementAST *ast);
virtual bool visit(CaseLabelStatementAST *ast);
virtual bool visit(DeclarationStatementAST *ast);
// types
virtual bool visit(BasicTypeAST *ast);
virtual bool visit(NamedTypeAST *ast);
virtual bool visit(ArrayTypeAST *ast);
virtual bool visit(StructTypeAST *ast);
virtual bool visit(QualifiedTypeAST *ast);
// declarations
virtual bool visit(PrecisionDeclarationAST *ast);
virtual bool visit(ParameterDeclarationAST *ast);
virtual bool visit(VariableDeclarationAST *ast);
virtual bool visit(TypeDeclarationAST *ast);
virtual bool visit(TypeAndVariableDeclarationAST *ast);
virtual bool visit(InvariantDeclarationAST *ast);
virtual bool visit(InitDeclarationAST *ast);
virtual bool visit(FunctionDeclarationAST *ast);
private:
Engine *_engine;
Scope *_scope;
const Type *_type;
ExprResult _expr;
};
} // namespace GLSL
#endif // GLSLSEMANTIC_H
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