| /* |
| * Copyright 2008 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.user.rebind; |
| |
| import com.google.gwt.core.ext.TreeLogger; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| |
| /** |
| * A SourceWriter that accumulates source and returns it in the |
| * {@link #toString()} method. |
| */ |
| public class StringSourceWriter implements SourceWriter { |
| |
| private final StringWriter buffer = new StringWriter(); |
| private int indentLevel = 0; |
| private String indentPrefix = ""; |
| private boolean needsIndent; |
| private final PrintWriter out = new PrintWriter(buffer); |
| |
| public void beginJavaDocComment() { |
| println("/**"); |
| indent(); |
| indentPrefix = " * "; |
| } |
| |
| /** |
| * This is a no-op. |
| */ |
| public void commit(TreeLogger logger) { |
| out.flush(); |
| } |
| |
| public void endJavaDocComment() { |
| out.println("*/"); |
| outdent(); |
| indentPrefix = ""; |
| } |
| |
| public void indent() { |
| indentLevel++; |
| } |
| |
| public void indentln(String s) { |
| indent(); |
| println(s); |
| outdent(); |
| } |
| |
| public void indentln(String s, Object... args) { |
| indentln(String.format(s, args)); |
| } |
| |
| public void outdent() { |
| indentLevel = Math.max(indentLevel - 1, 0); |
| } |
| |
| public void print(String s) { |
| maybeIndent(); |
| out.print(s); |
| } |
| |
| public void print(String s, Object... args) { |
| print(String.format(s, args)); |
| } |
| |
| public void println() { |
| maybeIndent(); |
| // Unix-style line endings for consistent behavior across platforms. |
| out.print('\n'); |
| needsIndent = true; |
| } |
| |
| public void println(String s) { |
| print(s); |
| println(); |
| } |
| |
| public void println(String s, Object... args) { |
| println(String.format(s, args)); |
| } |
| |
| @Override |
| public String toString() { |
| out.flush(); |
| return buffer.getBuffer().toString(); |
| } |
| |
| private void maybeIndent() { |
| if (needsIndent) { |
| needsIndent = false; |
| for (int i = 0; i < indentLevel; i++) { |
| out.print(" "); |
| out.print(indentPrefix); |
| } |
| } |
| } |
| } |