* An instance of the SourceMapGenerator represents a source map which is * being built incrementally. You may pass an object with the following * properties: * * - file: The filename of the generated source. * - sourceRoot: A root for all relative URLs in this source map.
| 19 | * - sourceRoot: A root for all relative URLs in this source map. |
| 20 | */ |
| 21 | class SourceMapGenerator { |
| 22 | constructor(aArgs) { |
| 23 | if (!aArgs) { |
| 24 | aArgs = {}; |
| 25 | } |
| 26 | this._file = util.getArg(aArgs, "file", null); |
| 27 | this._sourceRoot = util.getArg(aArgs, "sourceRoot", null); |
| 28 | this._skipValidation = util.getArg(aArgs, "skipValidation", false); |
| 29 | this._sources = new ArraySet(); |
| 30 | this._names = new ArraySet(); |
| 31 | this._mappings = new MappingList(); |
| 32 | this._sourcesContents = null; |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Creates a new SourceMapGenerator based on a SourceMapConsumer |
| 37 | * |
| 38 | * @param aSourceMapConsumer The SourceMap. |
| 39 | */ |
| 40 | static fromSourceMap(aSourceMapConsumer) { |
| 41 | const sourceRoot = aSourceMapConsumer.sourceRoot; |
| 42 | const generator = new SourceMapGenerator({ |
| 43 | file: aSourceMapConsumer.file, |
| 44 | sourceRoot, |
| 45 | }); |
| 46 | aSourceMapConsumer.eachMapping(function (mapping) { |
| 47 | const newMapping = { |
| 48 | generated: { |
| 49 | line: mapping.generatedLine, |
| 50 | column: mapping.generatedColumn, |
| 51 | }, |
| 52 | }; |
| 53 | |
| 54 | if (mapping.source != null) { |
| 55 | newMapping.source = mapping.source; |
| 56 | if (sourceRoot != null) { |
| 57 | newMapping.source = util.relative(sourceRoot, newMapping.source); |
| 58 | } |
| 59 | |
| 60 | newMapping.original = { |
| 61 | line: mapping.originalLine, |
| 62 | column: mapping.originalColumn, |
| 63 | }; |
| 64 | |
| 65 | if (mapping.name != null) { |
| 66 | newMapping.name = mapping.name; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | generator.addMapping(newMapping); |
| 71 | }); |
| 72 | aSourceMapConsumer.sources.forEach(function (sourceFile) { |
| 73 | let sourceRelative = sourceFile; |
| 74 | if (sourceRoot != null) { |
| 75 | sourceRelative = util.relative(sourceRoot, sourceFile); |
| 76 | } |
| 77 | |
| 78 | if (!generator._sources.has(sourceRelative)) { |
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