| /******************************************************************************* |
| * 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.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; |
| } |
| } |