com.google.debugging.sourcemap.SourceMapConsumerFactory Maven / Gradle / Ivy
/*
* Copyright 2011 The Closure Compiler Authors.
*
* 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.debugging.sourcemap;
/**
* Detect and parse the provided source map.
* @author [email protected] (John Lenz)
*/
public final class SourceMapConsumerFactory {
/** not constructible */
private SourceMapConsumerFactory() {}
/**
* @param contents The string representing the source map file contents.
* @return The parsed source map.
* @throws SourceMapParseException
*/
public static SourceMapping parse(String contents)
throws SourceMapParseException {
return parse(contents, null);
}
/**
* @param contents The string representing the source map file contents.
* @param supplier A supplier for any referenced maps.
* @return The parsed source map.
* @throws SourceMapParseException
*/
public static SourceMapping parse(String contents, SourceMapSupplier supplier)
throws SourceMapParseException {
// Version 1, starts with a magic string
if (contents.startsWith("/** Begin line maps. **/")) {
throw new SourceMapParseException(
"This appears to be a V1 SourceMap, which is not supported.");
} else if (contents.startsWith("{")){
SourceMapObject sourceMapObject = SourceMapObjectParser.parse(contents);
// Check basic assertions about the format.
switch (sourceMapObject.getVersion()) {
case 3: {
SourceMapConsumerV3 consumer = new SourceMapConsumerV3();
consumer.parse(sourceMapObject, supplier);
return consumer;
}
default:
throw new SourceMapParseException(
"Unknown source map version:" + sourceMapObject.getVersion());
}
}
throw new SourceMapParseException("unable to detect source map format");
}
}