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Diffstat (limited to 'sandbox/testAppNevena/Front/node_modules/source-map/lib/source-map-consumer.js')
| -rw-r--r-- | sandbox/testAppNevena/Front/node_modules/source-map/lib/source-map-consumer.js | 1254 |
1 files changed, 0 insertions, 1254 deletions
diff --git a/sandbox/testAppNevena/Front/node_modules/source-map/lib/source-map-consumer.js b/sandbox/testAppNevena/Front/node_modules/source-map/lib/source-map-consumer.js deleted file mode 100644 index 43ea1a0f..00000000 --- a/sandbox/testAppNevena/Front/node_modules/source-map/lib/source-map-consumer.js +++ /dev/null @@ -1,1254 +0,0 @@ -/* -*- Mode: js; js-indent-level: 2; -*- */ -/* - * Copyright 2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - */ - -const util = require("./util"); -const binarySearch = require("./binary-search"); -const ArraySet = require("./array-set").ArraySet; -const base64VLQ = require("./base64-vlq"); // eslint-disable-line no-unused-vars -const readWasm = require("../lib/read-wasm"); -const wasm = require("./wasm"); - -const INTERNAL = Symbol("smcInternal"); - -class SourceMapConsumer { - constructor(aSourceMap, aSourceMapURL) { - // If the constructor was called by super(), just return Promise<this>. - // Yes, this is a hack to retain the pre-existing API of the base-class - // constructor also being an async factory function. - if (aSourceMap == INTERNAL) { - return Promise.resolve(this); - } - - return _factory(aSourceMap, aSourceMapURL); - } - - static initialize(opts) { - readWasm.initialize(opts["lib/mappings.wasm"]); - } - - static fromSourceMap(aSourceMap, aSourceMapURL) { - return _factoryBSM(aSourceMap, aSourceMapURL); - } - - /** - * Construct a new `SourceMapConsumer` from `rawSourceMap` and `sourceMapUrl` - * (see the `SourceMapConsumer` constructor for details. Then, invoke the `async - * function f(SourceMapConsumer) -> T` with the newly constructed consumer, wait - * for `f` to complete, call `destroy` on the consumer, and return `f`'s return - * value. - * - * You must not use the consumer after `f` completes! - * - * By using `with`, you do not have to remember to manually call `destroy` on - * the consumer, since it will be called automatically once `f` completes. - * - * ```js - * const xSquared = await SourceMapConsumer.with( - * myRawSourceMap, - * null, - * async function (consumer) { - * // Use `consumer` inside here and don't worry about remembering - * // to call `destroy`. - * - * const x = await whatever(consumer); - * return x * x; - * } - * ); - * - * // You may not use that `consumer` anymore out here; it has - * // been destroyed. But you can use `xSquared`. - * console.log(xSquared); - * ``` - */ - static with(rawSourceMap, sourceMapUrl, f) { - // Note: The `acorn` version that `webpack` currently depends on doesn't - // support `async` functions, and the nodes that we support don't all have - // `.finally`. Therefore, this is written a bit more convolutedly than it - // should really be. - - let consumer = null; - const promise = new SourceMapConsumer(rawSourceMap, sourceMapUrl); - return promise - .then(c => { - consumer = c; - return f(c); - }) - .then(x => { - if (consumer) { - consumer.destroy(); - } - return x; - }, e => { - if (consumer) { - consumer.destroy(); - } - throw e; - }); - } - - /** - * Parse the mappings in a string in to a data structure which we can easily - * query (the ordered arrays in the `this.__generatedMappings` and - * `this.__originalMappings` properties). - */ - _parseMappings(aStr, aSourceRoot) { - throw new Error("Subclasses must implement _parseMappings"); - } - - /** - * Iterate over each mapping between an original source/line/column and a - * generated line/column in this source map. - * - * @param Function aCallback - * The function that is called with each mapping. - * @param Object aContext - * Optional. If specified, this object will be the value of `this` every - * time that `aCallback` is called. - * @param aOrder - * Either `SourceMapConsumer.GENERATED_ORDER` or - * `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to - * iterate over the mappings sorted by the generated file's line/column - * order or the original's source/line/column order, respectively. Defaults to - * `SourceMapConsumer.GENERATED_ORDER`. - */ - eachMapping(aCallback, aContext, aOrder) { - throw new Error("Subclasses must implement eachMapping"); - } - - /** - * Returns all generated line and column information for the original source, - * line, and column provided. If no column is provided, returns all mappings - * corresponding to a either the line we are searching for or the next - * closest line that has any mappings. Otherwise, returns all mappings - * corresponding to the given line and either the column we are searching for - * or the next closest column that has any offsets. - * - * The only argument is an object with the following properties: - * - * - source: The filename of the original source. - * - line: The line number in the original source. The line number is 1-based. - * - column: Optional. the column number in the original source. - * The column number is 0-based. - * - * and an array of objects is returned, each with the following properties: - * - * - line: The line number in the generated source, or null. The - * line number is 1-based. - * - column: The column number in the generated source, or null. - * The column number is 0-based. - */ - allGeneratedPositionsFor(aArgs) { - throw new Error("Subclasses must implement allGeneratedPositionsFor"); - } - - destroy() { - throw new Error("Subclasses must implement destroy"); - } -} - -/** - * The version of the source mapping spec that we are consuming. - */ -SourceMapConsumer.prototype._version = 3; -SourceMapConsumer.GENERATED_ORDER = 1; -SourceMapConsumer.ORIGINAL_ORDER = 2; - -SourceMapConsumer.GREATEST_LOWER_BOUND = 1; -SourceMapConsumer.LEAST_UPPER_BOUND = 2; - -exports.SourceMapConsumer = SourceMapConsumer; - -/** - * A BasicSourceMapConsumer instance represents a parsed source map which we can - * query for information about the original file positions by giving it a file - * position in the generated source. - * - * The first parameter is the raw source map (either as a JSON string, or - * already parsed to an object). According to the spec, source maps have the - * following attributes: - * - * - version: Which version of the source map spec this map is following. - * - sources: An array of URLs to the original source files. - * - names: An array of identifiers which can be referenced by individual mappings. - * - sourceRoot: Optional. The URL root from which all sources are relative. - * - sourcesContent: Optional. An array of contents of the original source files. - * - mappings: A string of base64 VLQs which contain the actual mappings. - * - file: Optional. The generated file this source map is associated with. - * - * Here is an example source map, taken from the source map spec[0]: - * - * { - * version : 3, - * file: "out.js", - * sourceRoot : "", - * sources: ["foo.js", "bar.js"], - * names: ["src", "maps", "are", "fun"], - * mappings: "AA,AB;;ABCDE;" - * } - * - * The second parameter, if given, is a string whose value is the URL - * at which the source map was found. This URL is used to compute the - * sources array. - * - * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1# - */ -class BasicSourceMapConsumer extends SourceMapConsumer { - constructor(aSourceMap, aSourceMapURL) { - return super(INTERNAL).then(that => { - let sourceMap = aSourceMap; - if (typeof aSourceMap === "string") { - sourceMap = util.parseSourceMapInput(aSourceMap); - } - - const version = util.getArg(sourceMap, "version"); - let sources = util.getArg(sourceMap, "sources"); - // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which - // requires the array) to play nice here. - const names = util.getArg(sourceMap, "names", []); - let sourceRoot = util.getArg(sourceMap, "sourceRoot", null); - const sourcesContent = util.getArg(sourceMap, "sourcesContent", null); - const mappings = util.getArg(sourceMap, "mappings"); - const file = util.getArg(sourceMap, "file", null); - - // Once again, Sass deviates from the spec and supplies the version as a - // string rather than a number, so we use loose equality checking here. - if (version != that._version) { - throw new Error("Unsupported version: " + version); - } - - if (sourceRoot) { - sourceRoot = util.normalize(sourceRoot); - } - - sources = sources - .map(String) - // Some source maps produce relative source paths like "./foo.js" instead of - // "foo.js". Normalize these first so that future comparisons will succeed. - // See bugzil.la/1090768. - .map(util.normalize) - // Always ensure that absolute sources are internally stored relative to - // the source root, if the source root is absolute. Not doing this would - // be particularly problematic when the source root is a prefix of the - // source (valid, but why??). See github issue #199 and bugzil.la/1188982. - .map(function(source) { - return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source) - ? util.relative(sourceRoot, source) - : source; - }); - - // Pass `true` below to allow duplicate names and sources. While source maps - // are intended to be compressed and deduplicated, the TypeScript compiler - // sometimes generates source maps with duplicates in them. See Github issue - // #72 and bugzil.la/889492. - that._names = ArraySet.fromArray(names.map(String), true); - that._sources = ArraySet.fromArray(sources, true); - - that._absoluteSources = that._sources.toArray().map(function(s) { - return util.computeSourceURL(sourceRoot, s, aSourceMapURL); - }); - - that.sourceRoot = sourceRoot; - that.sourcesContent = sourcesContent; - that._mappings = mappings; - that._sourceMapURL = aSourceMapURL; - that.file = file; - - that._computedColumnSpans = false; - that._mappingsPtr = 0; - that._wasm = null; - - return wasm().then(w => { - that._wasm = w; - return that; - }); - }); - } - - /** - * Utility function to find the index of a source. Returns -1 if not - * found. - */ - _findSourceIndex(aSource) { - let relativeSource = aSource; - if (this.sourceRoot != null) { - relativeSource = util.relative(this.sourceRoot, relativeSource); - } - - if (this._sources.has(relativeSource)) { - return this._sources.indexOf(relativeSource); - } - - // Maybe aSource is an absolute URL as returned by |sources|. In - // this case we can't simply undo the transform. - for (let i = 0; i < this._absoluteSources.length; ++i) { - if (this._absoluteSources[i] == aSource) { - return i; - } - } - - return -1; - } - - /** - * Create a BasicSourceMapConsumer from a SourceMapGenerator. - * - * @param SourceMapGenerator aSourceMap - * The source map that will be consumed. - * @param String aSourceMapURL - * The URL at which the source map can be found (optional) - * @returns BasicSourceMapConsumer - */ - static fromSourceMap(aSourceMap, aSourceMapURL) { - return new BasicSourceMapConsumer(aSourceMap.toString()); - } - - get sources() { - return this._absoluteSources.slice(); - } - - _getMappingsPtr() { - if (this._mappingsPtr === 0) { - this._parseMappings(this._mappings, this.sourceRoot); - } - - return this._mappingsPtr; - } - - /** - * Parse the mappings in a string in to a data structure which we can easily - * query (the ordered arrays in the `this.__generatedMappings` and - * `this.__originalMappings` properties). - */ - _parseMappings(aStr, aSourceRoot) { - const size = aStr.length; - - const mappingsBufPtr = this._wasm.exports.allocate_mappings(size); - const mappingsBuf = new Uint8Array(this._wasm.exports.memory.buffer, mappingsBufPtr, size); - for (let i = 0; i < size; i++) { - mappingsBuf[i] = aStr.charCodeAt(i); - } - - const mappingsPtr = this._wasm.exports.parse_mappings(mappingsBufPtr); - - if (!mappingsPtr) { - const error = this._wasm.exports.get_last_error(); - let msg = `Error parsing mappings (code ${error}): `; - - // XXX: keep these error codes in sync with `fitzgen/source-map-mappings`. - switch (error) { - case 1: - msg += "the mappings contained a negative line, column, source index, or name index"; - break; - case 2: - msg += "the mappings contained a number larger than 2**32"; - break; - case 3: - msg += "reached EOF while in the middle of parsing a VLQ"; - break; - case 4: - msg += "invalid base 64 character while parsing a VLQ"; - break; - default: - msg += "unknown error code"; - break; - } - - throw new Error(msg); - } - - this._mappingsPtr = mappingsPtr; - } - - eachMapping(aCallback, aContext, aOrder) { - const context = aContext || null; - const order = aOrder || SourceMapConsumer.GENERATED_ORDER; - const sourceRoot = this.sourceRoot; - - this._wasm.withMappingCallback( - mapping => { - if (mapping.source !== null) { - mapping.source = this._sources.at(mapping.source); - mapping.source = util.computeSourceURL(sourceRoot, mapping.source, this._sourceMapURL); - - if (mapping.name !== null) { - mapping.name = this._names.at(mapping.name); - } - } - - aCallback.call(context, mapping); - }, - () => { - switch (order) { - case SourceMapConsumer.GENERATED_ORDER: - this._wasm.exports.by_generated_location(this._getMappingsPtr()); - break; - case SourceMapConsumer.ORIGINAL_ORDER: - this._wasm.exports.by_original_location(this._getMappingsPtr()); - break; - default: - throw new Error("Unknown order of iteration."); - } - } - ); - } - - allGeneratedPositionsFor(aArgs) { - let source = util.getArg(aArgs, "source"); - const originalLine = util.getArg(aArgs, "line"); - const originalColumn = aArgs.column || 0; - - source = this._findSourceIndex(source); - if (source < 0) { - return []; - } - - if (originalLine < 1) { - throw new Error("Line numbers must be >= 1"); - } - - if (originalColumn < 0) { - throw new Error("Column numbers must be >= 0"); - } - - const mappings = []; - - this._wasm.withMappingCallback( - m => { - let lastColumn = m.lastGeneratedColumn; - if (this._computedColumnSpans && lastColumn === null) { - lastColumn = Infinity; - } - mappings.push({ - line: m.generatedLine, - column: m.generatedColumn, - lastColumn, - }); - }, () => { - this._wasm.exports.all_generated_locations_for( - this._getMappingsPtr(), - source, - originalLine - 1, - "column" in aArgs, - originalColumn - ); - } - ); - - return mappings; - } - - destroy() { - if (this._mappingsPtr !== 0) { - this._wasm.exports.free_mappings(this._mappingsPtr); - this._mappingsPtr = 0; - } - } - - /** - * Compute the last column for each generated mapping. The last column is - * inclusive. - */ - computeColumnSpans() { - if (this._computedColumnSpans) { - return; - } - - this._wasm.exports.compute_column_spans(this._getMappingsPtr()); - this._computedColumnSpans = true; - } - - /** - * Returns the original source, line, and column information for the generated - * source's line and column positions provided. The only argument is an object - * with the following properties: - * - * - line: The line number in the generated source. The line number - * is 1-based. - * - column: The column number in the generated source. The column - * number is 0-based. - * - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or - * 'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the - * closest element that is smaller than or greater than the one we are - * searching for, respectively, if the exact element cannot be found. - * Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'. - * - * and an object is returned with the following properties: - * - * - source: The original source file, or null. - * - line: The line number in the original source, or null. The - * line number is 1-based. - * - column: The column number in the original source, or null. The - * column number is 0-based. - * - name: The original identifier, or null. - */ - originalPositionFor(aArgs) { - const needle = { - generatedLine: util.getArg(aArgs, "line"), - generatedColumn: util.getArg(aArgs, "column") - }; - - if (needle.generatedLine < 1) { - throw new Error("Line numbers must be >= 1"); - } - - if (needle.generatedColumn < 0) { - throw new Error("Column numbers must be >= 0"); - } - - let bias = util.getArg(aArgs, "bias", SourceMapConsumer.GREATEST_LOWER_BOUND); - if (bias == null) { - bias = SourceMapConsumer.GREATEST_LOWER_BOUND; - } - - let mapping; - this._wasm.withMappingCallback(m => mapping = m, () => { - this._wasm.exports.original_location_for( - this._getMappingsPtr(), - needle.generatedLine - 1, - needle.generatedColumn, - bias - ); - }); - - if (mapping) { - if (mapping.generatedLine === needle.generatedLine) { - let source = util.getArg(mapping, "source", null); - if (source !== null) { - source = this._sources.at(source); - source = util.computeSourceURL(this.sourceRoot, source, this._sourceMapURL); - } - - let name = util.getArg(mapping, "name", null); - if (name !== null) { - name = this._names.at(name); - } - - return { - source, - line: util.getArg(mapping, "originalLine", null), - column: util.getArg(mapping, "originalColumn", null), - name - }; - } - } - - return { - source: null, - line: null, - column: null, - name: null - }; - } - - /** - * Return true if we have the source content for every source in the source - * map, false otherwise. - */ - hasContentsOfAllSources() { - if (!this.sourcesContent) { - return false; - } - return this.sourcesContent.length >= this._sources.size() && - !this.sourcesContent.some(function(sc) { return sc == null; }); - } - - /** - * Returns the original source content. The only argument is the url of the - * original source file. Returns null if no original source content is - * available. - */ - sourceContentFor(aSource, nullOnMissing) { - if (!this.sourcesContent) { - return null; - } - - const index = this._findSourceIndex(aSource); - if (index >= 0) { - return this.sourcesContent[index]; - } - - let relativeSource = aSource; - if (this.sourceRoot != null) { - relativeSource = util.relative(this.sourceRoot, relativeSource); - } - - let url; - if (this.sourceRoot != null - && (url = util.urlParse(this.sourceRoot))) { - // XXX: file:// URIs and absolute paths lead to unexpected behavior for - // many users. We can help them out when they expect file:// URIs to - // behave like it would if they were running a local HTTP server. See - // https://bugzilla.mozilla.org/show_bug.cgi?id=885597. - const fileUriAbsPath = relativeSource.replace(/^file:\/\//, ""); - if (url.scheme == "file" - && this._sources.has(fileUriAbsPath)) { - return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]; - } - - if ((!url.path || url.path == "/") - && this._sources.has("/" + relativeSource)) { - return this.sourcesContent[this._sources.indexOf("/" + relativeSource)]; - } - } - - // This function is used recursively from - // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we - // don't want to throw if we can't find the source - we just want to - // return null, so we provide a flag to exit gracefully. - if (nullOnMissing) { - return null; - } - - throw new Error('"' + relativeSource + '" is not in the SourceMap.'); - } - - /** - * Returns the generated line and column information for the original source, - * line, and column positions provided. The only argument is an object with - * the following properties: - * - * - source: The filename of the original source. - * - line: The line number in the original source. The line number - * is 1-based. - * - column: The column number in the original source. The column - * number is 0-based. - * - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or - * 'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the - * closest element that is smaller than or greater than the one we are - * searching for, respectively, if the exact element cannot be found. - * Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'. - * - * and an object is returned with the following properties: - * - * - line: The line number in the generated source, or null. The - * line number is 1-based. - * - column: The column number in the generated source, or null. - * The column number is 0-based. - */ - generatedPositionFor(aArgs) { - let source = util.getArg(aArgs, "source"); - source = this._findSourceIndex(source); - if (source < 0) { - return { - line: null, - column: null, - lastColumn: null - }; - } - - const needle = { - source, - originalLine: util.getArg(aArgs, "line"), - originalColumn: util.getArg(aArgs, "column") - }; - - if (needle.originalLine < 1) { - throw new Error("Line numbers must be >= 1"); - } - - if (needle.originalColumn < 0) { - throw new Error("Column numbers must be >= 0"); - } - - let bias = util.getArg(aArgs, "bias", SourceMapConsumer.GREATEST_LOWER_BOUND); - if (bias == null) { - bias = SourceMapConsumer.GREATEST_LOWER_BOUND; - } - - let mapping; - this._wasm.withMappingCallback(m => mapping = m, () => { - this._wasm.exports.generated_location_for( - this._getMappingsPtr(), - needle.source, - needle.originalLine - 1, - needle.originalColumn, - bias - ); - }); - - if (mapping) { - if (mapping.source === needle.source) { - let lastColumn = mapping.lastGeneratedColumn; - if (this._computedColumnSpans && lastColumn === null) { - lastColumn = Infinity; - } - return { - line: util.getArg(mapping, "generatedLine", null), - column: util.getArg(mapping, "generatedColumn", null), - lastColumn, - }; - } - } - - return { - line: null, - column: null, - lastColumn: null - }; - } -} - -BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer; -exports.BasicSourceMapConsumer = BasicSourceMapConsumer; - -/** - * An IndexedSourceMapConsumer instance represents a parsed source map which - * we can query for information. It differs from BasicSourceMapConsumer in - * that it takes "indexed" source maps (i.e. ones with a "sections" field) as - * input. - * - * The first parameter is a raw source map (either as a JSON string, or already - * parsed to an object). According to the spec for indexed source maps, they - * have the following attributes: - * - * - version: Which version of the source map spec this map is following. - * - file: Optional. The generated file this source map is associated with. - * - sections: A list of section definitions. - * - * Each value under the "sections" field has two fields: - * - offset: The offset into the original specified at which this section - * begins to apply, defined as an object with a "line" and "column" - * field. - * - map: A source map definition. This source map could also be indexed, - * but doesn't have to be. - * - * Instead of the "map" field, it's also possible to have a "url" field - * specifying a URL to retrieve a source map from, but that's currently - * unsupported. - * - * Here's an example source map, taken from the source map spec[0], but - * modified to omit a section which uses the "url" field. - * - * { - * version : 3, - * file: "app.js", - * sections: [{ - * offset: {line:100, column:10}, - * map: { - * version : 3, - * file: "section.js", - * sources: ["foo.js", "bar.js"], - * names: ["src", "maps", "are", "fun"], - * mappings: "AAAA,E;;ABCDE;" - * } - * }], - * } - * - * The second parameter, if given, is a string whose value is the URL - * at which the source map was found. This URL is used to compute the - * sources array. - * - * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt - */ -class IndexedSourceMapConsumer extends SourceMapConsumer { - constructor(aSourceMap, aSourceMapURL) { - return super(INTERNAL).then(that => { - let sourceMap = aSourceMap; - if (typeof aSourceMap === "string") { - sourceMap = util.parseSourceMapInput(aSourceMap); - } - - const version = util.getArg(sourceMap, "version"); - const sections = util.getArg(sourceMap, "sections"); - - if (version != that._version) { - throw new Error("Unsupported version: " + version); - } - - that._sources = new ArraySet(); - that._names = new ArraySet(); - that.__generatedMappings = null; - that.__originalMappings = null; - that.__generatedMappingsUnsorted = null; - that.__originalMappingsUnsorted = null; - - let lastOffset = { - line: -1, - column: 0 - }; - return Promise.all(sections.map(s => { - if (s.url) { - // The url field will require support for asynchronicity. - // See https://github.com/mozilla/source-map/issues/16 - throw new Error("Support for url field in sections not implemented."); - } - const offset = util.getArg(s, "offset"); - const offsetLine = util.getArg(offset, "line"); - const offsetColumn = util.getArg(offset, "column"); - - if (offsetLine < lastOffset.line || - (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) { - throw new Error("Section offsets must be ordered and non-overlapping."); - } - lastOffset = offset; - - const cons = new SourceMapConsumer(util.getArg(s, "map"), aSourceMapURL); - return cons.then(consumer => { - return { - generatedOffset: { - // The offset fields are 0-based, but we use 1-based indices when - // encoding/decoding from VLQ. - generatedLine: offsetLine + 1, - generatedColumn: offsetColumn + 1 - }, - consumer - }; - }); - })).then(s => { - that._sections = s; - return that; - }); - }); - } - - // `__generatedMappings` and `__originalMappings` are arrays that hold the - // parsed mapping coordinates from the source map's "mappings" attribute. They - // are lazily instantiated, accessed via the `_generatedMappings` and - // `_originalMappings` getters respectively, and we only parse the mappings - // and create these arrays once queried for a source location. We jump through - // these hoops because there can be many thousands of mappings, and parsing - // them is expensive, so we only want to do it if we must. - // - // Each object in the arrays is of the form: - // - // { - // generatedLine: The line number in the generated code, - // generatedColumn: The column number in the generated code, - // source: The path to the original source file that generated this - // chunk of code, - // originalLine: The line number in the original source that - // corresponds to this chunk of generated code, - // originalColumn: The column number in the original source that - // corresponds to this chunk of generated code, - // name: The name of the original symbol which generated this chunk of - // code. - // } - // - // All properties except for `generatedLine` and `generatedColumn` can be - // `null`. - // - // `_generatedMappings` is ordered by the generated positions. - // - // `_originalMappings` is ordered by the original positions. - get _generatedMappings() { - if (!this.__generatedMappings) { - this._sortGeneratedMappings(); - } - - return this.__generatedMappings; - } - - get _originalMappings() { - if (!this.__originalMappings) { - this._sortOriginalMappings(); - } - - return this.__originalMappings; - } - - get _generatedMappingsUnsorted() { - if (!this.__generatedMappingsUnsorted) { - this._parseMappings(this._mappings, this.sourceRoot); - } - - return this.__generatedMappingsUnsorted; - } - - get _originalMappingsUnsorted() { - if (!this.__originalMappingsUnsorted) { - this._parseMappings(this._mappings, this.sourceRoot); - } - - return this.__originalMappingsUnsorted; - } - - _sortGeneratedMappings() { - const mappings = this._generatedMappingsUnsorted; - mappings.sort(util.compareByGeneratedPositionsDeflated); - this.__generatedMappings = mappings; - } - - _sortOriginalMappings() { - const mappings = this._originalMappingsUnsorted; - mappings.sort(util.compareByOriginalPositions); - this.__originalMappings = mappings; - } - - /** - * The list of original sources. - */ - get sources() { - const sources = []; - for (let i = 0; i < this._sections.length; i++) { - for (let j = 0; j < this._sections[i].consumer.sources.length; j++) { - sources.push(this._sections[i].consumer.sources[j]); - } - } - return sources; - } - - /** - * Returns the original source, line, and column information for the generated - * source's line and column positions provided. The only argument is an object - * with the following properties: - * - * - line: The line number in the generated source. The line number - * is 1-based. - * - column: The column number in the generated source. The column - * number is 0-based. - * - * and an object is returned with the following properties: - * - * - source: The original source file, or null. - * - line: The line number in the original source, or null. The - * line number is 1-based. - * - column: The column number in the original source, or null. The - * column number is 0-based. - * - name: The original identifier, or null. - */ - originalPositionFor(aArgs) { - const needle = { - generatedLine: util.getArg(aArgs, "line"), - generatedColumn: util.getArg(aArgs, "column") - }; - - // Find the section containing the generated position we're trying to map - // to an original position. - const sectionIndex = binarySearch.search(needle, this._sections, - function(aNeedle, section) { - const cmp = aNeedle.generatedLine - section.generatedOffset.generatedLine; - if (cmp) { - return cmp; - } - - return (aNeedle.generatedColumn - - section.generatedOffset.generatedColumn); - }); - const section = this._sections[sectionIndex]; - - if (!section) { - return { - source: null, - line: null, - column: null, - name: null - }; - } - - return section.consumer.originalPositionFor({ - line: needle.generatedLine - - (section.generatedOffset.generatedLine - 1), - column: needle.generatedColumn - - (section.generatedOffset.generatedLine === needle.generatedLine - ? section.generatedOffset.generatedColumn - 1 - : 0), - bias: aArgs.bias - }); - } - - /** - * Return true if we have the source content for every source in the source - * map, false otherwise. - */ - hasContentsOfAllSources() { - return this._sections.every(function(s) { - return s.consumer.hasContentsOfAllSources(); - }); - } - - /** - * Returns the original source content. The only argument is the url of the - * original source file. Returns null if no original source content is - * available. - */ - sourceContentFor(aSource, nullOnMissing) { - for (let i = 0; i < this._sections.length; i++) { - const section = this._sections[i]; - - const content = section.consumer.sourceContentFor(aSource, true); - if (content) { - return content; - } - } - if (nullOnMissing) { - return null; - } - throw new Error('"' + aSource + '" is not in the SourceMap.'); - } - - /** - * Returns the generated line and column information for the original source, - * line, and column positions provided. The only argument is an object with - * the following properties: - * - * - source: The filename of the original source. - * - line: The line number in the original source. The line number - * is 1-based. - * - column: The column number in the original source. The column - * number is 0-based. - * - * and an object is returned with the following properties: - * - * - line: The line number in the generated source, or null. The - * line number is 1-based. - * - column: The column number in the generated source, or null. - * The column number is 0-based. - */ - generatedPositionFor(aArgs) { - for (let i = 0; i < this._sections.length; i++) { - const section = this._sections[i]; - - // Only consider this section if the requested source is in the list of - // sources of the consumer. - if (section.consumer._findSourceIndex(util.getArg(aArgs, "source")) === -1) { - continue; - } - const generatedPosition = section.consumer.generatedPositionFor(aArgs); - if (generatedPosition) { - const ret = { - line: generatedPosition.line + - (section.generatedOffset.generatedLine - 1), - column: generatedPosition.column + - (section.generatedOffset.generatedLine === generatedPosition.line - ? section.generatedOffset.generatedColumn - 1 - : 0) - }; - return ret; - } - } - - return { - line: null, - column: null - }; - } - - /** - * Parse the mappings in a string in to a data structure which we can easily - * query (the ordered arrays in the `this.__generatedMappings` and - * `this.__originalMappings` properties). - */ - _parseMappings(aStr, aSourceRoot) { - const generatedMappings = this.__generatedMappingsUnsorted = []; - const originalMappings = this.__originalMappingsUnsorted = []; - for (let i = 0; i < this._sections.length; i++) { - const section = this._sections[i]; - - const sectionMappings = []; - section.consumer.eachMapping(m => sectionMappings.push(m)); - - for (let j = 0; j < sectionMappings.length; j++) { - const mapping = sectionMappings[j]; - - // TODO: test if null is correct here. The original code used - // `source`, which would actually have gotten used as null because - // var's get hoisted. - // See: https://github.com/mozilla/source-map/issues/333 - let source = util.computeSourceURL(section.consumer.sourceRoot, null, this._sourceMapURL); - this._sources.add(source); - source = this._sources.indexOf(source); - - let name = null; - if (mapping.name) { - this._names.add(mapping.name); - name = this._names.indexOf(mapping.name); - } - - // The mappings coming from the consumer for the section have - // generated positions relative to the start of the section, so we - // need to offset them to be relative to the start of the concatenated - // generated file. - const adjustedMapping = { - source, - generatedLine: mapping.generatedLine + - (section.generatedOffset.generatedLine - 1), - generatedColumn: mapping.generatedColumn + - (section.generatedOffset.generatedLine === mapping.generatedLine - ? section.generatedOffset.generatedColumn - 1 - : 0), - originalLine: mapping.originalLine, - originalColumn: mapping.originalColumn, - name - }; - - generatedMappings.push(adjustedMapping); - if (typeof adjustedMapping.originalLine === "number") { - originalMappings.push(adjustedMapping); - } - } - } - } - - eachMapping(aCallback, aContext, aOrder) { - const context = aContext || null; - const order = aOrder || SourceMapConsumer.GENERATED_ORDER; - - let mappings; - switch (order) { - case SourceMapConsumer.GENERATED_ORDER: - mappings = this._generatedMappings; - break; - case SourceMapConsumer.ORIGINAL_ORDER: - mappings = this._originalMappings; - break; - default: - throw new Error("Unknown order of iteration."); - } - - const sourceRoot = this.sourceRoot; - mappings.map(function(mapping) { - let source = null; - if (mapping.source !== null) { - source = this._sources.at(mapping.source); - source = util.computeSourceURL(sourceRoot, source, this._sourceMapURL); - } - return { - source, - generatedLine: mapping.generatedLine, - generatedColumn: mapping.generatedColumn, - originalLine: mapping.originalLine, - originalColumn: mapping.originalColumn, - name: mapping.name === null ? null : this._names.at(mapping.name) - }; - }, this).forEach(aCallback, context); - } - - /** - * Find the mapping that best matches the hypothetical "needle" mapping that - * we are searching for in the given "haystack" of mappings. - */ - _findMapping(aNeedle, aMappings, aLineName, - aColumnName, aComparator, aBias) { - // To return the position we are searching for, we must first find the - // mapping for the given position and then return the opposite position it - // points to. Because the mappings are sorted, we can use binary search to - // find the best mapping. - - if (aNeedle[aLineName] <= 0) { - throw new TypeError("Line must be greater than or equal to 1, got " - + aNeedle[aLineName]); - } - if (aNeedle[aColumnName] < 0) { - throw new TypeError("Column must be greater than or equal to 0, got " - + aNeedle[aColumnName]); - } - - return binarySearch.search(aNeedle, aMappings, aComparator, aBias); - } - - allGeneratedPositionsFor(aArgs) { - const line = util.getArg(aArgs, "line"); - - // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping - // returns the index of the closest mapping less than the needle. By - // setting needle.originalColumn to 0, we thus find the last mapping for - // the given line, provided such a mapping exists. - const needle = { - source: util.getArg(aArgs, "source"), - originalLine: line, - originalColumn: util.getArg(aArgs, "column", 0) - }; - - needle.source = this._findSourceIndex(needle.source); - if (needle.source < 0) { - return []; - } - - if (needle.originalLine < 1) { - throw new Error("Line numbers must be >= 1"); - } - - if (needle.originalColumn < 0) { - throw new Error("Column numbers must be >= 0"); - } - - const mappings = []; - - let index = this._findMapping(needle, - this._originalMappings, - "originalLine", - "originalColumn", - util.compareByOriginalPositions, - binarySearch.LEAST_UPPER_BOUND); - if (index >= 0) { - let mapping = this._originalMappings[index]; - - if (aArgs.column === undefined) { - const originalLine = mapping.originalLine; - - // Iterate until either we run out of mappings, or we run into - // a mapping for a different line than the one we found. Since - // mappings are sorted, this is guaranteed to find all mappings for - // the line we found. - while (mapping && mapping.originalLine === originalLine) { - let lastColumn = mapping.lastGeneratedColumn; - if (this._computedColumnSpans && lastColumn === null) { - lastColumn = Infinity; - } - mappings.push({ - line: util.getArg(mapping, "generatedLine", null), - column: util.getArg(mapping, "generatedColumn", null), - lastColumn, - }); - - mapping = this._originalMappings[++index]; - } - } else { - const originalColumn = mapping.originalColumn; - - // Iterate until either we run out of mappings, or we run into - // a mapping for a different line than the one we were searching for. - // Since mappings are sorted, this is guaranteed to find all mappings for - // the line we are searching for. - while (mapping && - mapping.originalLine === line && - mapping.originalColumn == originalColumn) { - let lastColumn = mapping.lastGeneratedColumn; - if (this._computedColumnSpans && lastColumn === null) { - lastColumn = Infinity; - } - mappings.push({ - line: util.getArg(mapping, "generatedLine", null), - column: util.getArg(mapping, "generatedColumn", null), - lastColumn, - }); - - mapping = this._originalMappings[++index]; - } - } - } - - return mappings; - } - - destroy() { - for (let i = 0; i < this._sections.length; i++) { - this._sections[i].consumer.destroy(); - } - } -} -exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer; - -/* - * Cheat to get around inter-twingled classes. `factory()` can be at the end - * where it has access to non-hoisted classes, but it gets hoisted itself. - */ -function _factory(aSourceMap, aSourceMapURL) { - let sourceMap = aSourceMap; - if (typeof aSourceMap === "string") { - sourceMap = util.parseSourceMapInput(aSourceMap); - } - - const consumer = sourceMap.sections != null - ? new IndexedSourceMapConsumer(sourceMap, aSourceMapURL) - : new BasicSourceMapConsumer(sourceMap, aSourceMapURL); - return Promise.resolve(consumer); -} - -function _factoryBSM(aSourceMap, aSourceMapURL) { - return BasicSourceMapConsumer.fromSourceMap(aSourceMap, aSourceMapURL); -} |