+++ /dev/null
-/* -*- 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
- */
-
-var util = require('./util');
-var binarySearch = require('./binary-search');
-var ArraySet = require('./array-set').ArraySet;
-var base64VLQ = require('./base64-vlq');
-var quickSort = require('./quick-sort').quickSort;
-
-function SourceMapConsumer(aSourceMap, aSourceMapURL) {
- var sourceMap = aSourceMap;
- if (typeof aSourceMap === 'string') {
- sourceMap = util.parseSourceMapInput(aSourceMap);
- }
-
- return sourceMap.sections != null
- ? new IndexedSourceMapConsumer(sourceMap, aSourceMapURL)
- : new BasicSourceMapConsumer(sourceMap, aSourceMapURL);
-}
-
-SourceMapConsumer.fromSourceMap = function(aSourceMap, aSourceMapURL) {
- return BasicSourceMapConsumer.fromSourceMap(aSourceMap, aSourceMapURL);
-}
-
-/**
- * The version of the source mapping spec that we are consuming.
- */
-SourceMapConsumer.prototype._version = 3;
-
-// `__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.
-
-SourceMapConsumer.prototype.__generatedMappings = null;
-Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
- configurable: true,
- enumerable: true,
- get: function () {
- if (!this.__generatedMappings) {
- this._parseMappings(this._mappings, this.sourceRoot);
- }
-
- return this.__generatedMappings;
- }
-});
-
-SourceMapConsumer.prototype.__originalMappings = null;
-Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
- configurable: true,
- enumerable: true,
- get: function () {
- if (!this.__originalMappings) {
- this._parseMappings(this._mappings, this.sourceRoot);
- }
-
- return this.__originalMappings;
- }
-});
-
-SourceMapConsumer.prototype._charIsMappingSeparator =
- function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
- var c = aStr.charAt(index);
- return c === ";" || c === ",";
- };
-
-/**
- * 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).
- */
-SourceMapConsumer.prototype._parseMappings =
- function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
- throw new Error("Subclasses must implement _parseMappings");
- };
-
-SourceMapConsumer.GENERATED_ORDER = 1;
-SourceMapConsumer.ORIGINAL_ORDER = 2;
-
-SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
-SourceMapConsumer.LEAST_UPPER_BOUND = 2;
-
-/**
- * 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`.
- */
-SourceMapConsumer.prototype.eachMapping =
- function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
- var context = aContext || null;
- var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
-
- var 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.");
- }
-
- var sourceRoot = this.sourceRoot;
- mappings.map(function (mapping) {
- var source = mapping.source === null ? null : this._sources.at(mapping.source);
- source = util.computeSourceURL(sourceRoot, source, this._sourceMapURL);
- return {
- source: 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);
- };
-
-/**
- * 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.
- */
-SourceMapConsumer.prototype.allGeneratedPositionsFor =
- function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
- var 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.
- var 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 [];
- }
-
- var mappings = [];
-
- var index = this._findMapping(needle,
- this._originalMappings,
- "originalLine",
- "originalColumn",
- util.compareByOriginalPositions,
- binarySearch.LEAST_UPPER_BOUND);
- if (index >= 0) {
- var mapping = this._originalMappings[index];
-
- if (aArgs.column === undefined) {
- var 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) {
- mappings.push({
- line: util.getArg(mapping, 'generatedLine', null),
- column: util.getArg(mapping, 'generatedColumn', null),
- lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
- });
-
- mapping = this._originalMappings[++index];
- }
- } else {
- var 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) {
- mappings.push({
- line: util.getArg(mapping, 'generatedLine', null),
- column: util.getArg(mapping, 'generatedColumn', null),
- lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
- });
-
- mapping = this._originalMappings[++index];
- }
- }
- }
-
- return mappings;
- };
-
-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 referrenced 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#
- */
-function BasicSourceMapConsumer(aSourceMap, aSourceMapURL) {
- var sourceMap = aSourceMap;
- if (typeof aSourceMap === 'string') {
- sourceMap = util.parseSourceMapInput(aSourceMap);
- }
-
- var version = util.getArg(sourceMap, 'version');
- var 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.
- var names = util.getArg(sourceMap, 'names', []);
- var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
- var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
- var mappings = util.getArg(sourceMap, 'mappings');
- var 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 != this._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.
- this._names = ArraySet.fromArray(names.map(String), true);
- this._sources = ArraySet.fromArray(sources, true);
-
- this._absoluteSources = this._sources.toArray().map(function (s) {
- return util.computeSourceURL(sourceRoot, s, aSourceMapURL);
- });
-
- this.sourceRoot = sourceRoot;
- this.sourcesContent = sourcesContent;
- this._mappings = mappings;
- this._sourceMapURL = aSourceMapURL;
- this.file = file;
-}
-
-BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
-BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;
-
-/**
- * Utility function to find the index of a source. Returns -1 if not
- * found.
- */
-BasicSourceMapConsumer.prototype._findSourceIndex = function(aSource) {
- var 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.
- var i;
- for (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
- */
-BasicSourceMapConsumer.fromSourceMap =
- function SourceMapConsumer_fromSourceMap(aSourceMap, aSourceMapURL) {
- var smc = Object.create(BasicSourceMapConsumer.prototype);
-
- var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
- var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
- smc.sourceRoot = aSourceMap._sourceRoot;
- smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
- smc.sourceRoot);
- smc.file = aSourceMap._file;
- smc._sourceMapURL = aSourceMapURL;
- smc._absoluteSources = smc._sources.toArray().map(function (s) {
- return util.computeSourceURL(smc.sourceRoot, s, aSourceMapURL);
- });
-
- // Because we are modifying the entries (by converting string sources and
- // names to indices into the sources and names ArraySets), we have to make
- // a copy of the entry or else bad things happen. Shared mutable state
- // strikes again! See github issue #191.
-
- var generatedMappings = aSourceMap._mappings.toArray().slice();
- var destGeneratedMappings = smc.__generatedMappings = [];
- var destOriginalMappings = smc.__originalMappings = [];
-
- for (var i = 0, length = generatedMappings.length; i < length; i++) {
- var srcMapping = generatedMappings[i];
- var destMapping = new Mapping;
- destMapping.generatedLine = srcMapping.generatedLine;
- destMapping.generatedColumn = srcMapping.generatedColumn;
-
- if (srcMapping.source) {
- destMapping.source = sources.indexOf(srcMapping.source);
- destMapping.originalLine = srcMapping.originalLine;
- destMapping.originalColumn = srcMapping.originalColumn;
-
- if (srcMapping.name) {
- destMapping.name = names.indexOf(srcMapping.name);
- }
-
- destOriginalMappings.push(destMapping);
- }
-
- destGeneratedMappings.push(destMapping);
- }
-
- quickSort(smc.__originalMappings, util.compareByOriginalPositions);
-
- return smc;
- };
-
-/**
- * The version of the source mapping spec that we are consuming.
- */
-BasicSourceMapConsumer.prototype._version = 3;
-
-/**
- * The list of original sources.
- */
-Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
- get: function () {
- return this._absoluteSources.slice();
- }
-});
-
-/**
- * Provide the JIT with a nice shape / hidden class.
- */
-function Mapping() {
- this.generatedLine = 0;
- this.generatedColumn = 0;
- this.source = null;
- this.originalLine = null;
- this.originalColumn = null;
- this.name = 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).
- */
-BasicSourceMapConsumer.prototype._parseMappings =
- function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
- var generatedLine = 1;
- var previousGeneratedColumn = 0;
- var previousOriginalLine = 0;
- var previousOriginalColumn = 0;
- var previousSource = 0;
- var previousName = 0;
- var length = aStr.length;
- var index = 0;
- var cachedSegments = {};
- var temp = {};
- var originalMappings = [];
- var generatedMappings = [];
- var mapping, str, segment, end, value;
-
- while (index < length) {
- if (aStr.charAt(index) === ';') {
- generatedLine++;
- index++;
- previousGeneratedColumn = 0;
- }
- else if (aStr.charAt(index) === ',') {
- index++;
- }
- else {
- mapping = new Mapping();
- mapping.generatedLine = generatedLine;
-
- // Because each offset is encoded relative to the previous one,
- // many segments often have the same encoding. We can exploit this
- // fact by caching the parsed variable length fields of each segment,
- // allowing us to avoid a second parse if we encounter the same
- // segment again.
- for (end = index; end < length; end++) {
- if (this._charIsMappingSeparator(aStr, end)) {
- break;
- }
- }
- str = aStr.slice(index, end);
-
- segment = cachedSegments[str];
- if (segment) {
- index += str.length;
- } else {
- segment = [];
- while (index < end) {
- base64VLQ.decode(aStr, index, temp);
- value = temp.value;
- index = temp.rest;
- segment.push(value);
- }
-
- if (segment.length === 2) {
- throw new Error('Found a source, but no line and column');
- }
-
- if (segment.length === 3) {
- throw new Error('Found a source and line, but no column');
- }
-
- cachedSegments[str] = segment;
- }
-
- // Generated column.
- mapping.generatedColumn = previousGeneratedColumn + segment[0];
- previousGeneratedColumn = mapping.generatedColumn;
-
- if (segment.length > 1) {
- // Original source.
- mapping.source = previousSource + segment[1];
- previousSource += segment[1];
-
- // Original line.
- mapping.originalLine = previousOriginalLine + segment[2];
- previousOriginalLine = mapping.originalLine;
- // Lines are stored 0-based
- mapping.originalLine += 1;
-
- // Original column.
- mapping.originalColumn = previousOriginalColumn + segment[3];
- previousOriginalColumn = mapping.originalColumn;
-
- if (segment.length > 4) {
- // Original name.
- mapping.name = previousName + segment[4];
- previousName += segment[4];
- }
- }
-
- generatedMappings.push(mapping);
- if (typeof mapping.originalLine === 'number') {
- originalMappings.push(mapping);
- }
- }
- }
-
- quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
- this.__generatedMappings = generatedMappings;
-
- quickSort(originalMappings, util.compareByOriginalPositions);
- this.__originalMappings = originalMappings;
- };
-
-/**
- * Find the mapping that best matches the hypothetical "needle" mapping that
- * we are searching for in the given "haystack" of mappings.
- */
-BasicSourceMapConsumer.prototype._findMapping =
- function SourceMapConsumer_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);
- };
-
-/**
- * Compute the last column for each generated mapping. The last column is
- * inclusive.
- */
-BasicSourceMapConsumer.prototype.computeColumnSpans =
- function SourceMapConsumer_computeColumnSpans() {
- for (var index = 0; index < this._generatedMappings.length; ++index) {
- var mapping = this._generatedMappings[index];
-
- // Mappings do not contain a field for the last generated columnt. We
- // can come up with an optimistic estimate, however, by assuming that
- // mappings are contiguous (i.e. given two consecutive mappings, the
- // first mapping ends where the second one starts).
- if (index + 1 < this._generatedMappings.length) {
- var nextMapping = this._generatedMappings[index + 1];
-
- if (mapping.generatedLine === nextMapping.generatedLine) {
- mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
- continue;
- }
- }
-
- // The last mapping for each line spans the entire line.
- mapping.lastGeneratedColumn = Infinity;
- }
- };
-
-/**
- * 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.
- */
-BasicSourceMapConsumer.prototype.originalPositionFor =
- function SourceMapConsumer_originalPositionFor(aArgs) {
- var needle = {
- generatedLine: util.getArg(aArgs, 'line'),
- generatedColumn: util.getArg(aArgs, 'column')
- };
-
- var index = this._findMapping(
- needle,
- this._generatedMappings,
- "generatedLine",
- "generatedColumn",
- util.compareByGeneratedPositionsDeflated,
- util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
- );
-
- if (index >= 0) {
- var mapping = this._generatedMappings[index];
-
- if (mapping.generatedLine === needle.generatedLine) {
- var source = util.getArg(mapping, 'source', null);
- if (source !== null) {
- source = this._sources.at(source);
- source = util.computeSourceURL(this.sourceRoot, source, this._sourceMapURL);
- }
- var name = util.getArg(mapping, 'name', null);
- if (name !== null) {
- name = this._names.at(name);
- }
- return {
- source: source,
- line: util.getArg(mapping, 'originalLine', null),
- column: util.getArg(mapping, 'originalColumn', null),
- name: 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.
- */
-BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
- function BasicSourceMapConsumer_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.
- */
-BasicSourceMapConsumer.prototype.sourceContentFor =
- function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
- if (!this.sourcesContent) {
- return null;
- }
-
- var index = this._findSourceIndex(aSource);
- if (index >= 0) {
- return this.sourcesContent[index];
- }
-
- var relativeSource = aSource;
- if (this.sourceRoot != null) {
- relativeSource = util.relative(this.sourceRoot, relativeSource);
- }
-
- var 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.
- var 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;
- }
- else {
- 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.
- */
-BasicSourceMapConsumer.prototype.generatedPositionFor =
- function SourceMapConsumer_generatedPositionFor(aArgs) {
- var source = util.getArg(aArgs, 'source');
- source = this._findSourceIndex(source);
- if (source < 0) {
- return {
- line: null,
- column: null,
- lastColumn: null
- };
- }
-
- var needle = {
- source: source,
- originalLine: util.getArg(aArgs, 'line'),
- originalColumn: util.getArg(aArgs, 'column')
- };
-
- var index = this._findMapping(
- needle,
- this._originalMappings,
- "originalLine",
- "originalColumn",
- util.compareByOriginalPositions,
- util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
- );
-
- if (index >= 0) {
- var mapping = this._originalMappings[index];
-
- if (mapping.source === needle.source) {
- return {
- line: util.getArg(mapping, 'generatedLine', null),
- column: util.getArg(mapping, 'generatedColumn', null),
- lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
- };
- }
- }
-
- return {
- line: null,
- column: null,
- lastColumn: null
- };
- };
-
-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
- */
-function IndexedSourceMapConsumer(aSourceMap, aSourceMapURL) {
- var sourceMap = aSourceMap;
- if (typeof aSourceMap === 'string') {
- sourceMap = util.parseSourceMapInput(aSourceMap);
- }
-
- var version = util.getArg(sourceMap, 'version');
- var sections = util.getArg(sourceMap, 'sections');
-
- if (version != this._version) {
- throw new Error('Unsupported version: ' + version);
- }
-
- this._sources = new ArraySet();
- this._names = new ArraySet();
-
- var lastOffset = {
- line: -1,
- column: 0
- };
- this._sections = sections.map(function (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.');
- }
- var offset = util.getArg(s, 'offset');
- var offsetLine = util.getArg(offset, 'line');
- var 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;
-
- 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: new SourceMapConsumer(util.getArg(s, 'map'), aSourceMapURL)
- }
- });
-}
-
-IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
-IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;
-
-/**
- * The version of the source mapping spec that we are consuming.
- */
-IndexedSourceMapConsumer.prototype._version = 3;
-
-/**
- * The list of original sources.
- */
-Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
- get: function () {
- var sources = [];
- for (var i = 0; i < this._sections.length; i++) {
- for (var 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.
- */
-IndexedSourceMapConsumer.prototype.originalPositionFor =
- function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
- var 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.
- var sectionIndex = binarySearch.search(needle, this._sections,
- function(needle, section) {
- var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
- if (cmp) {
- return cmp;
- }
-
- return (needle.generatedColumn -
- section.generatedOffset.generatedColumn);
- });
- var 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.
- */
-IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
- function IndexedSourceMapConsumer_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.
- */
-IndexedSourceMapConsumer.prototype.sourceContentFor =
- function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
- for (var i = 0; i < this._sections.length; i++) {
- var section = this._sections[i];
-
- var content = section.consumer.sourceContentFor(aSource, true);
- if (content) {
- return content;
- }
- }
- if (nullOnMissing) {
- return null;
- }
- else {
- 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.
- */
-IndexedSourceMapConsumer.prototype.generatedPositionFor =
- function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
- for (var i = 0; i < this._sections.length; i++) {
- var 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;
- }
- var generatedPosition = section.consumer.generatedPositionFor(aArgs);
- if (generatedPosition) {
- var 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).
- */
-IndexedSourceMapConsumer.prototype._parseMappings =
- function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
- this.__generatedMappings = [];
- this.__originalMappings = [];
- for (var i = 0; i < this._sections.length; i++) {
- var section = this._sections[i];
- var sectionMappings = section.consumer._generatedMappings;
- for (var j = 0; j < sectionMappings.length; j++) {
- var mapping = sectionMappings[j];
-
- var source = section.consumer._sources.at(mapping.source);
- source = util.computeSourceURL(section.consumer.sourceRoot, source, this._sourceMapURL);
- this._sources.add(source);
- source = this._sources.indexOf(source);
-
- var name = null;
- if (mapping.name) {
- name = section.consumer._names.at(mapping.name);
- this._names.add(name);
- name = this._names.indexOf(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.
- var adjustedMapping = {
- source: 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: name
- };
-
- this.__generatedMappings.push(adjustedMapping);
- if (typeof adjustedMapping.originalLine === 'number') {
- this.__originalMappings.push(adjustedMapping);
- }
- }
- }
-
- quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
- quickSort(this.__originalMappings, util.compareByOriginalPositions);
- };
-
-exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;
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