175 lines
6.8 KiB
JavaScript
175 lines
6.8 KiB
JavaScript
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@jridgewell/set-array'), require('@jridgewell/sourcemap-codec')) :
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typeof define === 'function' && define.amd ? define(['exports', '@jridgewell/set-array', '@jridgewell/sourcemap-codec'], factory) :
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(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.genMapping = {}, global.setArray, global.sourcemapCodec));
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})(this, (function (exports, setArray, sourcemapCodec) { 'use strict';
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/**
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* A low-level API to associate a generated position with an original source position. Line and
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* column here are 0-based, unlike `addMapping`.
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*/
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exports.addSegment = void 0;
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/**
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* A high-level API to associate a generated position with an original source position. Line is
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* 1-based, but column is 0-based, due to legacy behavior in `source-map` library.
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*/
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exports.addMapping = void 0;
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/**
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* Adds/removes the content of the source file to the source map.
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*/
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exports.setSourceContent = void 0;
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/**
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* Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects
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* a sourcemap, or to JSON.stringify.
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*/
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exports.decodedMap = void 0;
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/**
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* Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects
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* a sourcemap, or to JSON.stringify.
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*/
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exports.encodedMap = void 0;
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/**
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* Returns an array of high-level mapping objects for every recorded segment, which could then be
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* passed to the `source-map` library.
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*/
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exports.allMappings = void 0;
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/**
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* Provides the state to generate a sourcemap.
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*/
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class GenMapping {
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constructor({ file, sourceRoot } = {}) {
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this._names = new setArray.SetArray();
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this._sources = new setArray.SetArray();
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this._sourcesContent = [];
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this._mappings = [];
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this.file = file;
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this.sourceRoot = sourceRoot;
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}
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}
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(() => {
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exports.addSegment = (map, genLine, genColumn, source, sourceLine, sourceColumn, name) => {
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const { _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
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const line = getLine(mappings, genLine);
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if (source == null) {
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const seg = [genColumn];
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const index = getColumnIndex(line, genColumn, seg);
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return insert(line, index, seg);
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}
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const sourcesIndex = setArray.put(sources, source);
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const seg = name
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? [genColumn, sourcesIndex, sourceLine, sourceColumn, setArray.put(names, name)]
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: [genColumn, sourcesIndex, sourceLine, sourceColumn];
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const index = getColumnIndex(line, genColumn, seg);
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if (sourcesIndex === sourcesContent.length)
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sourcesContent[sourcesIndex] = null;
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insert(line, index, seg);
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};
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exports.addMapping = (map, mapping) => {
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const { generated, source, original, name } = mapping;
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return exports.addSegment(map, generated.line - 1, generated.column, source, original == null ? undefined : original.line - 1, original === null || original === void 0 ? void 0 : original.column, name);
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};
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exports.setSourceContent = (map, source, content) => {
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const { _sources: sources, _sourcesContent: sourcesContent } = map;
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sourcesContent[setArray.put(sources, source)] = content;
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};
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exports.decodedMap = (map) => {
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const { file, sourceRoot, _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
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return {
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version: 3,
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file,
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names: names.array,
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sourceRoot: sourceRoot || undefined,
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sources: sources.array,
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sourcesContent,
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mappings,
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};
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};
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exports.encodedMap = (map) => {
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const decoded = exports.decodedMap(map);
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return Object.assign(Object.assign({}, decoded), { mappings: sourcemapCodec.encode(decoded.mappings) });
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};
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exports.allMappings = (map) => {
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const out = [];
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const { _mappings: mappings, _sources: sources, _names: names } = map;
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for (let i = 0; i < mappings.length; i++) {
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const line = mappings[i];
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for (let j = 0; j < line.length; j++) {
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const seg = line[j];
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const generated = { line: i + 1, column: seg[0] };
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let source = undefined;
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let original = undefined;
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let name = undefined;
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if (seg.length !== 1) {
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source = sources.array[seg[1]];
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original = { line: seg[2] + 1, column: seg[3] };
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if (seg.length === 5)
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name = names.array[seg[4]];
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}
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out.push({ generated, source, original, name });
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}
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}
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return out;
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};
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})();
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function getLine(mappings, index) {
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for (let i = mappings.length; i <= index; i++) {
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mappings[i] = [];
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}
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return mappings[index];
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}
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function getColumnIndex(line, column, seg) {
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let index = line.length;
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for (let i = index - 1; i >= 0; i--, index--) {
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const current = line[i];
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const col = current[0];
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if (col > column)
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continue;
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if (col < column)
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break;
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const cmp = compare(current, seg);
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if (cmp === 0)
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return index;
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if (cmp < 0)
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break;
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}
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return index;
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}
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function compare(a, b) {
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let cmp = compareNum(a.length, b.length);
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if (cmp !== 0)
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return cmp;
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// We've already checked genColumn
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if (a.length === 1)
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return 0;
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cmp = compareNum(a[1], b[1]);
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if (cmp !== 0)
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return cmp;
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cmp = compareNum(a[2], b[2]);
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if (cmp !== 0)
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return cmp;
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cmp = compareNum(a[3], b[3]);
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if (cmp !== 0)
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return cmp;
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if (a.length === 4)
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return 0;
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return compareNum(a[4], b[4]);
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}
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function compareNum(a, b) {
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return a - b;
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}
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function insert(array, index, value) {
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if (index === -1)
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return;
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for (let i = array.length; i > index; i--) {
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array[i] = array[i - 1];
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}
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array[index] = value;
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}
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exports.GenMapping = GenMapping;
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Object.defineProperty(exports, '__esModule', { value: true });
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}));
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//# sourceMappingURL=gen-mapping.umd.js.map
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