| /* |
| * Copyright 2007 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.ast.Context; |
| import com.google.gwt.dev.jjs.ast.JClassType; |
| import com.google.gwt.dev.jjs.ast.JDeclaredType; |
| import com.google.gwt.dev.jjs.ast.JField; |
| import com.google.gwt.dev.jjs.ast.JInterfaceType; |
| import com.google.gwt.dev.jjs.ast.JMethod; |
| import com.google.gwt.dev.jjs.ast.JMethodBody; |
| import com.google.gwt.dev.jjs.ast.JProgram; |
| import com.google.gwt.dev.util.TextOutput; |
| |
| /** |
| * Generates Java source from our AST. ToStringGenerationVisitor is for |
| * relatively short toString() results, for easy viewing in a debugger. This |
| * subclass delves into the bodies of classes, interfaces, and methods to |
| * produce the whole source tree. |
| * |
| * The goal is not to generate the input source tree. Rather, the goal is to |
| * produce a set of classes that can be pasted into an enclosing class and |
| * compiled with a standard Java compiler. In practice, there are cases that |
| * require hand-editing to actually get a full compilation, due to Java's |
| * built-in reliance on particular built-in types. |
| * |
| * Known to be broken: Our generated String, Class, and Throwable are not |
| * compatible with the real ones, which breaks string literals, class literals, |
| * try/catch/throw, and overrides of Object methods. |
| */ |
| public class SourceGenerationVisitor extends ToStringGenerationVisitor { |
| |
| public SourceGenerationVisitor(TextOutput textOutput) { |
| super(textOutput); |
| } |
| |
| @Override |
| public boolean visit(JClassType x, Context ctx) { |
| printAbstractFlag(x); |
| printFinalFlag(x); |
| print(CHARS_CLASS); |
| space(); |
| if (x.getSuperClass() != null) { |
| print(CHARS_EXTENDS); |
| printTypeName(x.getSuperClass()); |
| space(); |
| } |
| |
| if (x.getImplements().size() > 0) { |
| print(CHARS_IMPLEMENTS); |
| for (int i = 0, c = x.getImplements().size(); i < c; ++i) { |
| if (i > 0) { |
| print(CHARS_COMMA); |
| } |
| printTypeName(x.getImplements().get(i)); |
| } |
| space(); |
| } |
| openBlock(); |
| |
| for (JField field : x.getFields()) { |
| accept(field); |
| newline(); |
| newline(); |
| } |
| for (JMethod method : x.getMethods()) { |
| if (JProgram.isClinit(method)) { |
| // Suppress empty clinit. |
| JMethodBody body = (JMethodBody) method.getBody(); |
| if (body.getBlock().getStatements().isEmpty()) { |
| continue; |
| } |
| } |
| accept(method); |
| newline(); |
| newline(); |
| } |
| |
| closeBlock(); |
| return false; |
| } |
| |
| @Override |
| public boolean visit(JInterfaceType x, Context ctx) { |
| print(CHARS_INTERFACE); |
| printTypeName(x); |
| space(); |
| |
| if (x.getImplements().size() > 0) { |
| print(CHARS_EXTENDS); |
| for (int i = 0, c = x.getImplements().size(); i < c; ++i) { |
| if (i > 0) { |
| print(CHARS_COMMA); |
| } |
| printTypeName(x.getImplements().get(i)); |
| } |
| space(); |
| } |
| |
| openBlock(); |
| |
| for (JField field : x.getFields()) { |
| accept(field); |
| newline(); |
| newline(); |
| } |
| for (JMethod method : x.getMethods()) { |
| if (JProgram.isClinit(method)) { |
| // Suppress empty clinit. |
| JMethodBody body = (JMethodBody) method.getBody(); |
| if (body.getBlock().getStatements().isEmpty()) { |
| continue; |
| } |
| } |
| accept(method); |
| newline(); |
| newline(); |
| } |
| |
| closeBlock(); |
| return false; |
| } |
| |
| @Override |
| public boolean visit(JProgram x, Context ctx) { |
| for (int i = 0; i < x.getDeclaredTypes().size(); ++i) { |
| JDeclaredType type = x.getDeclaredTypes().get(i); |
| accept(type); |
| newline(); |
| newline(); |
| } |
| return false; |
| } |
| |
| @Override |
| protected boolean shouldPrintMethodBody() { |
| return true; |
| } |
| |
| } |