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/*******************************************************************************
* Copyright (c) 2004, 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* 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.PRVALUE;
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.IASTImplicitDestructorName;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTExpression;
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.cpp.semantics.CPPEvaluation;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.DestructorCallCollector;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalCompoundStatementExpression;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalFixed;
/**
* Gnu-extension: ({ ... })
*/
public class CPPASTCompoundStatementExpression extends ASTNode
implements IGNUASTCompoundStatementExpression, ICPPASTExpression {
private IASTCompoundStatement fStatement;
private ICPPEvaluation fEval;
private IASTImplicitDestructorName[] fImplicitDestructorNames;
public CPPASTCompoundStatementExpression() {
}
public CPPASTCompoundStatementExpression(IASTCompoundStatement statement) {
setCompoundStatement(statement);
}
@Override
public CPPASTCompoundStatementExpression copy() {
return copy(CopyStyle.withoutLocations);
}
@Override
public CPPASTCompoundStatementExpression copy(CopyStyle style) {
CPPASTCompoundStatementExpression copy =
new CPPASTCompoundStatementExpression(fStatement == null ? null : fStatement.copy(style));
return copy(copy, style);
}
@Override
public IASTCompoundStatement getCompoundStatement() {
return fStatement;
}
@Override
public void setCompoundStatement(IASTCompoundStatement statement) {
assertNotFrozen();
this.fStatement = statement;
if (statement != null) {
statement.setParent(this);
statement.setPropertyInParent(STATEMENT);
}
}
@Override
public ICPPEvaluation getEvaluation() {
if (fEval == null) {
if (fStatement != null) {
IASTStatement[] statements = fStatement.getStatements();
if (statements.length > 0) {
IASTStatement st = statements[statements.length - 1];
if (st instanceof IASTExpressionStatement) {
IASTExpressionStatement exprStmt = (IASTExpressionStatement) st;
ICPPASTExpression expr = (ICPPASTExpression) exprStmt.getExpression();
fEval= new EvalCompoundStatementExpression(expr.getEvaluation(), this);
}
}
}
if (fEval == null)
fEval= EvalFixed.INCOMPLETE;
}
return fEval;
}
@Override
public IASTImplicitDestructorName[] getImplicitDestructorNames() {
if (fImplicitDestructorNames == null) {
fImplicitDestructorNames = DestructorCallCollector.getTemporariesDestructorCalls(this);
}
return fImplicitDestructorNames;
}
@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 (fStatement != null && !fStatement.accept(action))
return false;
if (action.shouldVisitImplicitDestructorNames && !acceptByNodes(getImplicitDestructorNames(), 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() {
return CPPEvaluation.getType(this);
}
@Override
public boolean isLValue() {
return false;
}
@Override
public ValueCategory getValueCategory() {
return PRVALUE;
}
}
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