com.google.gwt.dev.jdt.SafeASTVisitor Maven / Gradle / Ivy
/*
* Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.jdt;
import org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
/**
* Avoids visiting invalid local types due to compile errors or unreachability.
*/
public class SafeASTVisitor extends ASTVisitor {
@Override
public final void endVisit(TypeDeclaration typeDecl, BlockScope scope) {
if (typeDecl.binding == null || typeDecl.binding.constantPoolName() == null) {
/*
* Weird case: if JDT determines that this local class is totally
* uninstantiable, it won't bother allocating a local name.
*/
return;
}
endVisitValid(typeDecl, scope);
}
public void endVisitValid(TypeDeclaration typeDecl, BlockScope scope) {
super.endVisit(typeDecl, scope);
}
@Override
public final boolean visit(TypeDeclaration typeDecl, BlockScope scope) {
if (typeDecl.binding == null || typeDecl.binding.constantPoolName() == null) {
/*
* Weird case: if JDT determines that this local class is totally
* uninstantiable, it won't bother allocating a local name.
*/
return false;
}
return visitValid(typeDecl, scope);
}
public boolean visitValid(TypeDeclaration typeDecl, BlockScope scope) {
return super.visit(typeDecl, scope);
}
}