| /* |
| * Copyright 2013 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.jjs.impl; |
| |
| import com.google.gwt.dev.jjs.InternalCompilerException; |
| import com.google.gwt.dev.jjs.ast.Context; |
| import com.google.gwt.dev.jjs.ast.JClassLiteral; |
| import com.google.gwt.dev.jjs.ast.JDeclaredType; |
| import com.google.gwt.dev.jjs.ast.JExpression; |
| import com.google.gwt.dev.jjs.ast.JMethod; |
| import com.google.gwt.dev.jjs.ast.JMethodCall; |
| import com.google.gwt.dev.jjs.ast.JNode; |
| import com.google.gwt.dev.jjs.ast.JType; |
| import com.google.gwt.dev.jjs.ast.JVisitor; |
| import com.google.gwt.dev.util.log.speedtracer.CompilerEventType; |
| import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger; |
| import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger.Event; |
| import com.google.gwt.thirdparty.guava.common.collect.Sets; |
| |
| import java.util.Set; |
| |
| /** |
| * Records all rebinds in an AST that has not been unified. |
| */ |
| public class ReboundTypeRecorder { |
| |
| private class ReboundTypeVisitor extends JVisitor { |
| @Override |
| public void endVisit(JMethodCall x, Context ctx) { |
| JMethod method = x.getTarget(); |
| String methodSignature = method.getEnclosingType().getName() + '.' + method.getSignature(); |
| if (GWT_CREATE_METHOD_SIGNATURES.contains(methodSignature)) { |
| JExpression classLiteralArgument = x.getArgs().get(0); |
| if (!(classLiteralArgument instanceof JClassLiteral)) { |
| throw new InternalCompilerException( |
| "Only class literals may be used as arguments to GWT.create()"); |
| } |
| JClassLiteral classLiteral = (JClassLiteral) classLiteralArgument; |
| |
| JType requestType = classLiteral.getRefType(); |
| if (!(requestType instanceof JDeclaredType)) { |
| throw new InternalCompilerException( |
| "Only classes and interfaces may be used as arguments to GWT.create()"); |
| } |
| |
| reboundTypes.add((JDeclaredType) requestType); |
| } |
| } |
| } |
| |
| private static final Set<String> GWT_CREATE_METHOD_SIGNATURES = |
| Sets.newHashSet(UnifyAst.GWT_CREATE, UnifyAst.OLD_GWT_CREATE); |
| |
| /** |
| * Walks the AST from the provided node and records seen rebound types into the provided |
| * reboundTypes set. |
| */ |
| public static void exec(JNode node, Set<JDeclaredType> reboundTypes) { |
| Event recordRebindsEvent = SpeedTracerLogger.start(CompilerEventType.RECORD_REBINDS); |
| new ReboundTypeRecorder(node, reboundTypes).execImpl(); |
| recordRebindsEvent.end(); |
| } |
| |
| private final JNode node; |
| private final Set<JDeclaredType> reboundTypes; |
| |
| private ReboundTypeRecorder(JNode node, Set<JDeclaredType> reboundTypes) { |
| this.node = node; |
| this.reboundTypes = reboundTypes; |
| } |
| |
| private void execImpl() { |
| new ReboundTypeVisitor().accept(node); |
| } |
| } |