/*******************************************************************************
* Copyright (c) 2005, 2013 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 Rational Software) - Initial API and implementation
* Yuan Zhang / Beth Tibbitts (IBM Research)
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTCompoundStatement;
import org.eclipse.cdt.core.dom.ast.IASTExpressionStatement;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.core.dom.ast.ISemanticProblem;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.gnu.IGNUASTCompoundStatementExpression;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.ProblemType;
/**
* Compound statement for c
*/
public class CASTCompoundStatementExpression extends ASTNode implements IGNUASTCompoundStatementExpression {
private IASTCompoundStatement statement;
public CASTCompoundStatementExpression() {
}
public CASTCompoundStatementExpression(IASTCompoundStatement statement) {
setCompoundStatement(statement);
}
@Override
public CASTCompoundStatementExpression copy() {
return copy(CopyStyle.withoutLocations);
}
@Override
public CASTCompoundStatementExpression copy(CopyStyle style) {
CASTCompoundStatementExpression copy = new CASTCompoundStatementExpression();
copy.setCompoundStatement(statement == null ? null : statement.copy(style));
return copy(copy, style);
}
@Override
public IASTCompoundStatement getCompoundStatement() {
return statement;
}
@Override
public void setCompoundStatement(IASTCompoundStatement statement) {
assertNotFrozen();
this.statement = statement;
if (statement != null) {
statement.setParent(this);
statement.setPropertyInParent(STATEMENT);
}
}
@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;
}
}
if (statement != null) if (!statement.accept(action)) return false;
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 IType getExpressionType() {
IASTCompoundStatement compound = getCompoundStatement();
IASTStatement[] statements = compound.getStatements();
if (statements.length > 0) {
IASTStatement st = statements[statements.length - 1];
if (st instanceof IASTExpressionStatement)
return ((IASTExpressionStatement) st).getExpression().getExpressionType();
}
return new ProblemType(ISemanticProblem.TYPE_UNKNOWN_FOR_EXPRESSION);
}
@Override
public boolean isLValue() {
IASTCompoundStatement compound = getCompoundStatement();
IASTStatement[] statements = compound.getStatements();
if (statements.length > 0) {
IASTStatement st = statements[statements.length - 1];
if (st instanceof IASTExpressionStatement)
return ((IASTExpressionStatement) st).getExpression().isLValue();
}
return false;
}
@Override
public final ValueCategory getValueCategory() {
return isLValue() ? ValueCategory.LVALUE : ValueCategory.PRVALUE;
}
}