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/*******************************************************************************
* Copyright (c) 2004, 2014 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:
* IBM - Initial API and implementation
* Markus Schorn (Wind River Systems)
* Sergey Prigogin (Google)
* Thomas Corbat (IFS)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTAttribute;
import org.eclipse.cdt.core.dom.ast.IASTAttributeSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTDeclarationStatement;
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.parser.util.ArrayUtil;
import org.eclipse.cdt.internal.core.dom.parser.ASTAmbiguousNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguousStatement;
import org.eclipse.cdt.internal.core.dom.parser.IASTInternalScope;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPASTInternalScope;
public class CASTAmbiguousStatement extends ASTAmbiguousNode implements IASTAmbiguousStatement {
private IASTStatement[] stmts = new IASTStatement[2];
private int stmtsPos= -1;
private IScope fScope;
private IASTDeclaration fDeclaration;
public CASTAmbiguousStatement(IASTStatement... statements) {
for (IASTStatement s : statements)
addStatement(s);
}
@Override
protected void beforeResolution() {
// Populate containing scope, so that it will not be affected by the alternative
// branches.
fScope= CVisitor.getContainingScope(this);
if (fScope instanceof ICPPASTInternalScope) {
((ICPPASTInternalScope) fScope).populateCache();
}
}
@Override
protected void beforeAlternative(IASTNode alternative) {
cleanupScope();
if (alternative instanceof IASTDeclarationStatement) {
if (fScope instanceof CScope) {
fDeclaration = ((IASTDeclarationStatement) alternative).getDeclaration();
((CScope) fScope).collectNames(fDeclaration);
}
}
}
private void cleanupScope() {
if (fScope instanceof IASTInternalScope && fDeclaration != null) {
((IASTInternalScope) fScope).removeNestedFromCache(fDeclaration);
}
}
@Override
protected void afterResolution(ASTVisitor resolver, IASTNode best) {
beforeAlternative(best);
fDeclaration= null;
fScope= null;
}
@Override
public void addStatement(IASTStatement s) {
assertNotFrozen();
if (s != null) {
stmts = ArrayUtil.appendAt(IASTStatement.class, stmts, ++stmtsPos, s);
s.setParent(this);
s.setPropertyInParent(STATEMENT);
}
}
@Override
public IASTStatement[] getStatements() {
stmts = ArrayUtil.trimAt(IASTStatement.class, stmts, stmtsPos);
return stmts;
}
@Override
public IASTAttribute[] getAttributes() {
return IASTAttribute.EMPTY_ATTRIBUTE_ARRAY;
}
@Override
public void addAttribute(IASTAttribute attribute) {
throw new UnsupportedOperationException();
}
@Override
public IASTAttributeSpecifier[] getAttributeSpecifiers() {
return IASTAttributeSpecifier.EMPTY_ATTRIBUTE_SPECIFIER_ARRAY;
}
@Override
public void addAttributeSpecifier(IASTAttributeSpecifier attributeSpecifier) {
throw new UnsupportedOperationException();
}
@Override
public IASTNode[] getNodes() {
return getStatements();
}
@Override
public IASTStatement copy() {
throw new UnsupportedOperationException();
}
@Override
public IASTStatement copy(CopyStyle style) {
throw new UnsupportedOperationException();
}
}
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