| /* |
| * 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.javac; |
| |
| import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration; |
| import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration; |
| import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration; |
| import org.eclipse.jdt.internal.compiler.lookup.MethodBinding; |
| |
| /** |
| * Collects method parameter names. |
| */ |
| public class MethodParamCollector { |
| |
| private static class Visitor extends MethodVisitor { |
| |
| private final MethodArgNamesLookup methodArgs; |
| |
| public Visitor(MethodArgNamesLookup methodArgs) { |
| this.methodArgs = methodArgs; |
| } |
| |
| /** |
| * Collect information on methods with at least one argument that will be |
| * visible in the TypeOracle. |
| */ |
| @Override |
| protected boolean interestingMethod(AbstractMethodDeclaration method) { |
| if (method.arguments == null || method.arguments.length == 0) { |
| return false; |
| } |
| MethodBinding binding = method.binding; |
| if (binding == null || binding.declaringClass.isLocalType()) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| protected void processMethod(TypeDeclaration typeDecl, |
| AbstractMethodDeclaration method, String enclosingType) { |
| methodArgs.store(enclosingType, method); |
| } |
| } |
| |
| /** |
| * Returns an unmodifiable MethodArgNamesLookup containing the method argument |
| * names for the supplied compilation unit. |
| * |
| * @return MethodArgNamesLookup instance |
| */ |
| public static MethodArgNamesLookup collect(CompilationUnitDeclaration cud, String sourceMapPath) { |
| MethodArgNamesLookup methodArgs = new MethodArgNamesLookup(); |
| new Visitor(methodArgs).collect(cud, sourceMapPath); |
| methodArgs.freeze(); |
| return methodArgs; |
| } |
| } |