/*
* 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.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.jjs.ast.JReferenceType;
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-editting 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
* compatable 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) {
super.visit(x, ctx);
openBlock();
for (JField it : x.getFields()) {
accept(it);
newline();
newline();
}
for (JMethod it : x.getMethods()) {
if (JProgram.isClinit(it)) {
// Suppress empty clinit.
JMethodBody body = (JMethodBody) it.getBody();
if (body.getBlock().getStatements().isEmpty()) {
continue;
}
}
accept(it);
newline();
newline();
}
closeBlock();
return false;
}
@Override
public boolean visit(JInterfaceType x, Context ctx) {
super.visit(x, ctx);
openBlock();
for (JField field : x.getFields()) {
accept(field);
newline();
newline();
}
for (JMethod method : x.getMethods()) {
accept(method);
newline();
newline();
}
closeBlock();
return false;
}
@Override
public boolean visit(JProgram x, Context ctx) {
for (int i = 0; i < x.getDeclaredTypes().size(); ++i) {
JReferenceType type = x.getDeclaredTypes().get(i);
accept(type);
newline();
newline();
}
return false;
}
@Override
protected boolean shouldPrintMethodBody() {
return true;
}
}