/**
* Appends the index source map to the given buffer.
*
* @param out The stream to which the map will be appended.
* @param name The name of the generated source file that this source map represents.
* @param sections An ordered list of map sections to include in the index.
* @throws IOException
*/
@Override
public void appendIndexMapTo(Appendable out, String name, List<SourceMapSection> sections)
throws IOException {
// Add the header fields.
out.append("{\n");
appendFirstField(out, "version", "3");
appendField(out, "file", escapeString(name));
// Add the line character maps.
appendFieldStart(out, "sections");
out.append("[\n");
boolean first = true;
for (SourceMapSection section : sections) {
if (first) {
first = false;
} else {
out.append(",\n");
}
out.append("{\n");
appendFirstField(out, "offset", offsetValue(section.getLine(), section.getColumn()));
if (section.getSectionType() == SourceMapSection.SectionType.URL) {
appendField(out, "url", escapeString(section.getSectionValue()));
} else if (section.getSectionType() == SourceMapSection.SectionType.MAP) {
appendField(out, "map", section.getSectionValue());
} else {
throw new IOException("Unexpected section type");
}
out.append("\n}");
}
out.append("\n]");
appendFieldEnd(out);
out.append("\n}\n");
}
public void testWriteMetaMap2() throws IOException {
StringWriter out = new StringWriter();
String name = "./app.js";
List<SourceMapSection> appSections =
Lists.newArrayList(
// Map and URLs can be mixed.
SourceMapSection.forMap(getEmptyMapFor("./part.js"), 0, 0),
SourceMapSection.forURL("src2", 100, 10));
SourceMapGeneratorV3 generator = new SourceMapGeneratorV3();
generator.appendIndexMapTo(out, name, appSections);
assertEquals(
"{\n"
+ "\"version\":3,\n"
+ "\"file\":\"./app.js\",\n"
+ "\"sections\":[\n"
+ "{\n"
+ "\"offset\":{\n"
+ "\"line\":0,\n"
+ "\"column\":0\n"
+ "},\n"
+ "\"map\":{\n"
+ "\"version\":3,\n"
+ "\"file\":\"./part.js\",\n"
+ "\"lineCount\":1,\n"
+ "\"mappings\":\";\",\n"
+ "\"sources\":[],\n"
+ "\"names\":[]\n"
+ "}\n"
+ "\n"
+ "},\n"
+ "{\n"
+ "\"offset\":{\n"
+ "\"line\":100,\n"
+ "\"column\":10\n"
+ "},\n"
+ "\"url\":\"src2\"\n"
+ "}\n"
+ "]\n"
+ "}\n",
out.toString());
}
public void testWriteMetaMap() throws IOException {
StringWriter out = new StringWriter();
String name = "./app.js";
List<SourceMapSection> appSections =
Lists.newArrayList(
SourceMapSection.forURL("src1", 0, 0),
SourceMapSection.forURL("src2", 100, 10),
SourceMapSection.forURL("src3", 150, 5));
SourceMapGeneratorV3 generator = new SourceMapGeneratorV3();
generator.appendIndexMapTo(out, name, appSections);
assertEquals(
"{\n"
+ "\"version\":3,\n"
+ "\"file\":\"./app.js\",\n"
+ "\"sections\":[\n"
+ "{\n"
+ "\"offset\":{\n"
+ "\"line\":0,\n"
+ "\"column\":0\n"
+ "},\n"
+ "\"url\":\"src1\"\n"
+ "},\n"
+ "{\n"
+ "\"offset\":{\n"
+ "\"line\":100,\n"
+ "\"column\":10\n"
+ "},\n"
+ "\"url\":\"src2\"\n"
+ "},\n"
+ "{\n"
+ "\"offset\":{\n"
+ "\"line\":150,\n"
+ "\"column\":5\n"
+ "},\n"
+ "\"url\":\"src3\"\n"
+ "}\n"
+ "]\n"
+ "}\n",
out.toString());
}
public void testParseSourceMetaMap() throws Exception {
final String INPUT1 = "file1";
final String INPUT2 = "file2";
LinkedHashMap<String, String> inputs = Maps.newLinkedHashMap();
inputs.put(INPUT1, "var __FOO__ = 1;");
inputs.put(INPUT2, "var __BAR__ = 2;");
RunResult result1 = compile(inputs.get(INPUT1), INPUT1);
RunResult result2 = compile(inputs.get(INPUT2), INPUT2);
final String MAP1 = "map1";
final String MAP2 = "map2";
final LinkedHashMap<String, String> maps = Maps.newLinkedHashMap();
maps.put(MAP1, result1.sourceMapFileContent);
maps.put(MAP2, result2.sourceMapFileContent);
List<SourceMapSection> sections = Lists.newArrayList();
StringBuilder output = new StringBuilder();
FilePosition offset = appendAndCount(output, result1.generatedSource);
sections.add(SourceMapSection.forURL(MAP1, 0, 0));
output.append(result2.generatedSource);
sections.add(SourceMapSection.forURL(MAP2, offset.getLine(), offset.getColumn()));
SourceMapGeneratorV3 generator = new SourceMapGeneratorV3();
StringBuilder mapContents = new StringBuilder();
generator.appendIndexMapTo(mapContents, "out.js", sections);
check(
inputs,
output.toString(),
mapContents.toString(),
new SourceMapSupplier() {
@Override
public String getSourceMap(String url) {
return maps.get(url);
}
});
}