/*
* Copyright 2014 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.core.ext.linker.impl;
import com.google.gwt.core.ext.soyc.Range;
import com.google.gwt.dev.jjs.JsSourceMap;
import com.google.gwt.thirdparty.guava.common.collect.Lists;
import java.util.List;
/**
* A builder for combining existing JS source maps.
* <p>
* Takes care of rebasing the offset of appended ranges onto the end of the previously
* accumulated ranges.
*/
public class JsSourceMapBuilder {
private int bytes;
private final List<Range> ranges = Lists.newArrayList();
private int lines;
public void append(JsSourceMap jsSourceMap) {
for (Range normalizedRange : jsSourceMap.getRanges()) {
Range offsetRange = normalizedRange.createOffsetCopy(bytes, lines);
ranges.add(offsetRange);
}
bytes += jsSourceMap.getBytes();
lines += jsSourceMap.getLines();
}
public JsSourceMap build() {
return new JsSourceMap(ranges, bytes, lines);
}
}