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/*******************************************************************************
* 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 org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompoundStatement;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTSwitchStatement;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalUtil;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.ExecSimpleDeclaration;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.ExecSwitch;
/**
* Switch statement in C++.
*/
public class CPPASTSwitchStatement extends CPPASTAttributeOwner implements ICPPASTSwitchStatement, ICPPExecutionOwner {
private IScope scope;
private IASTExpression controllerExpression;
private IASTDeclaration controllerDeclaration;
private IASTStatement body;
public CPPASTSwitchStatement() {
}
public CPPASTSwitchStatement(IASTDeclaration controller, IASTStatement body) {
setControllerDeclaration(controller);
setBody(body);
}
public CPPASTSwitchStatement(IASTExpression controller, IASTStatement body) {
setControllerExpression(controller);
setBody(body);
}
@Override
public CPPASTSwitchStatement copy() {
return copy(CopyStyle.withoutLocations);
}
@Override
public CPPASTSwitchStatement copy(CopyStyle style) {
CPPASTSwitchStatement copy = new CPPASTSwitchStatement();
copy.setControllerDeclaration(controllerDeclaration == null ?
null : controllerDeclaration.copy(style));
copy.setControllerExpression(controllerExpression == null ?
null : controllerExpression.copy(style));
copy.setBody(body == null ? null : body.copy(style));
return copy(copy, style);
}
@Override
public IASTExpression getControllerExpression() {
return controllerExpression;
}
@Override
public void setControllerExpression(IASTExpression controller) {
assertNotFrozen();
this.controllerExpression = controller;
if (controller != null) {
controller.setParent(this);
controller.setPropertyInParent(CONTROLLER_EXP);
controllerDeclaration= null;
}
}
@Override
public IASTStatement getBody() {
return body;
}
@Override
public void setBody(IASTStatement body) {
assertNotFrozen();
this.body = body;
if (body != null) {
body.setParent(this);
body.setPropertyInParent(BODY);
}
}
@Override
public boolean accept(ASTVisitor action) {
if (action.shouldVisitStatements) {
switch (action.visit(this)) {
case ASTVisitor.PROCESS_ABORT: return false;
case ASTVisitor.PROCESS_SKIP: return true;
default: break;
}
}
if (!acceptByAttributeSpecifiers(action)) return false;
if (controllerExpression != null && !controllerExpression.accept(action)) return false;
if (controllerDeclaration != null && !controllerDeclaration.accept(action)) return false;
if (body != null && !body.accept(action)) return false;
if (action.shouldVisitStatements) {
switch (action.leave(this)) {
case ASTVisitor.PROCESS_ABORT: return false;
case ASTVisitor.PROCESS_SKIP: return true;
default: break;
}
}
return true;
}
@Override
public void replace(IASTNode child, IASTNode other) {
if (body == child) {
other.setPropertyInParent(child.getPropertyInParent());
other.setParent(child.getParent());
body = (IASTStatement) other;
return;
} else if (controllerDeclaration == child || controllerExpression == child) {
if (other instanceof IASTExpression) {
setControllerExpression((IASTExpression) other);
} else if (other instanceof IASTDeclaration) {
setControllerDeclaration((IASTDeclaration) other);
}
return;
}
super.replace(child, other);
}
@Override
public IASTDeclaration getControllerDeclaration() {
return controllerDeclaration;
}
@Override
public void setControllerDeclaration(IASTDeclaration d) {
assertNotFrozen();
controllerDeclaration = d;
if (d != null) {
d.setParent(this);
d.setPropertyInParent(CONTROLLER_DECLARATION);
controllerExpression= null;
}
}
@Override
public IScope getScope() {
if (scope == null)
scope = new CPPBlockScope(this);
return scope;
}
@Override
public ICPPExecution getExecution() {
ICPPASTExpression controllerExpr = (ICPPASTExpression) getControllerExpression();
ICPPExecutionOwner controllerDecl = (ICPPExecutionOwner) getControllerDeclaration();
ICPPEvaluation controllerExprEval = controllerExpr != null ? controllerExpr.getEvaluation() : null;
ExecSimpleDeclaration controllerDeclExec = controllerDecl != null ? (ExecSimpleDeclaration) controllerDecl.getExecution() : null;
IASTStatement[] bodyStmts = null;
if (body instanceof ICPPASTCompoundStatement) {
ICPPASTCompoundStatement compoundStmt = (ICPPASTCompoundStatement) body;
bodyStmts = compoundStmt.getStatements();
} else {
bodyStmts = new IASTStatement[]{body};
}
ICPPExecution[] bodyStmtExecutions = new ICPPExecution[bodyStmts.length];
for (int i = 0; i < bodyStmts.length; i++) {
bodyStmtExecutions[i] = EvalUtil.getExecutionFromStatement(bodyStmts[i]);
}
return new ExecSwitch(controllerExprEval, controllerDeclExec, bodyStmtExecutions);
}
}
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