/*******************************************************************************
 * Copyright (c) 2004, 2015 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     John Camelon (IBM) - Initial API and implementation
 *     Markus Schorn (Wind River Systems)
 *     Sergey Prigogin (Google)
 *******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;

import static org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory.LVALUE;

import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTImplicitDestructorName;
import org.eclipse.cdt.core.dom.ast.IASTProblem;
import org.eclipse.cdt.core.dom.ast.IASTProblemExpression;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTExpression;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalFixed;

public class CPPASTProblemExpression extends CPPASTProblemOwner implements IASTProblemExpression, ICPPASTExpression, ICPPEvaluationOwner {

    public CPPASTProblemExpression() {
		super();
	}

	public CPPASTProblemExpression(IASTProblem problem) {
		super(problem);
	}

	@Override
	public CPPASTProblemExpression copy() {
		return copy(CopyStyle.withoutLocations);
	}

	@Override
	public CPPASTProblemExpression copy(CopyStyle style) {
		CPPASTProblemExpression copy = new CPPASTProblemExpression();
		return copy(copy, style);
	}

	@Override
	public IASTImplicitDestructorName[] getImplicitDestructorNames() {
		return IASTImplicitDestructorName.EMPTY_NAME_ARRAY;
	}

	@Override
	public boolean accept(ASTVisitor action) {
        if (action.shouldVisitExpressions) {
		    switch (action.visit(this)) {
	            case ASTVisitor.PROCESS_ABORT: return false;
	            case ASTVisitor.PROCESS_SKIP: return true;
	            default: break;
	        }
		}
        super.accept(action);	// visits the problem
        if (action.shouldVisitExpressions) {
		    switch (action.leave(this)) {
	            case ASTVisitor.PROCESS_ABORT: return false;
	            case ASTVisitor.PROCESS_SKIP: return true;
	            default: break;
	        }
		}
        return true;
    }

	@Override
	public ICPPEvaluation getEvaluation() {
		return EvalFixed.INCOMPLETE;
	}

    @Override
	public IType getExpressionType() {
    	return getEvaluation().getType(this);
    }

	@Override
	public boolean isLValue() {
		return getValueCategory() == LVALUE;
	}

	@Override
	public ValueCategory getValueCategory() {
    	return getEvaluation().getValueCategory(this);
	}
}