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package org.eclipse.cdt.core.dom.lrparser.action.cpp;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTInitializer;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTPointerOperator;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IProblemBinding;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.internal.core.dom.parser.ASTInternal;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTAmbiguity;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor;
public class CPPASTAmbiguousDeclarator extends CPPASTAmbiguity implements IASTDeclarator {
private List<IASTDeclarator> declarators = new ArrayList<IASTDeclarator>(2);
public CPPASTAmbiguousDeclarator(IASTDeclarator ... ds) {
for(IASTDeclarator declarator : ds)
addDeclarator(declarator);
}
@Override
protected IASTNode[] getNodes() {
return declarators.toArray(new IASTDeclarator[declarators.size()]);
}
@Override
public boolean accept(ASTVisitor visitor) {
// this code was copied from CPPASTAmbiguity.accept() and slightly modified.
IASTNode nodeToReplace = this;
IASTAmbiguityParent owner = (IASTAmbiguityParent) getParent();
IASTNode[] nodez = getNodes();
int[] problems = new int[nodez.length];
for(int i = 0; i < nodez.length; ++i) {
IASTNode node = nodez[i];
owner.replace(nodeToReplace, node);
nodeToReplace = node;
node.accept(visitor);
CPPASTNameCollector nameCollector = new CPPASTNameCollector();
node.accept(nameCollector);
IASTName[] names = nameCollector.getNames();
for(IASTName name : names) {
try {
IBinding b = name.resolveBinding();
if(b == null || b instanceof IProblemBinding)
++problems[i];
} catch (Exception t) {
t.printStackTrace();
++problems[i];
}
}
if(names.length > 0) {
IScope scope = CPPVisitor.getContainingScope(names[0]);
if( scope != null ) {
try {
ASTInternal.flushCache(scope);
IScope parentScope = scope.getParent(); // needed to fix bugs
if(parentScope != null) {
ASTInternal.flushCache(parentScope);
}
} catch (DOMException de) {}
}
}
}
int bestIndex = 0;
int bestValue = problems[0];
for (int i = 1; i < problems.length; ++i) {
if (problems[i] < bestValue) {
bestIndex = i;
bestValue = problems[i];
}
}
//IASTAmbiguityParent owner = (IASTAmbiguityParent) getParent();
owner.replace(nodeToReplace, nodez[bestIndex]);
return true;
}
public void addDeclarator(IASTDeclarator declarator) {
if(declarator != null) {
declarators.add(declarator);
declarator.setParent(this);
declarator.setPropertyInParent(null); // it really doesn't matter
}
}
private IASTDeclarator getDefaultDeclarator() {
return declarators.get(0);
}
public void addPointerOperator(IASTPointerOperator operator) {
getDefaultDeclarator().addPointerOperator(operator);
}
public void setInitializer(IASTInitializer initializer) {
getDefaultDeclarator().setInitializer(initializer);
}
public void setName(IASTName name) {
getDefaultDeclarator().setName(name);
}
public void setNestedDeclarator(IASTDeclarator nested) {
getDefaultDeclarator().setNestedDeclarator(nested);
}
public IASTInitializer getInitializer() {
return getDefaultDeclarator().getInitializer();
}
public IASTName getName() {
return getDefaultDeclarator().getName();
}
public IASTDeclarator getNestedDeclarator() {
return getDefaultDeclarator().getNestedDeclarator();
}
public IASTPointerOperator[] getPointerOperators() {
return getDefaultDeclarator().getPointerOperators();
}
public int getRoleForName(IASTName n) {
return getDefaultDeclarator().getRoleForName(n);
}
}
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