You can not select more than 25 topics
			Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
		
		
		
		
		
			
		
			
				
					
					
						
							168 lines
						
					
					
						
							5.6 KiB
						
					
					
				
			
		
		
	
	
							168 lines
						
					
					
						
							5.6 KiB
						
					
					
				| import { SetArray, put } from '@jridgewell/set-array';
 | |
| import { encode } from '@jridgewell/sourcemap-codec';
 | |
| 
 | |
| /**
 | |
|  * A low-level API to associate a generated position with an original source position. Line and
 | |
|  * column here are 0-based, unlike `addMapping`.
 | |
|  */
 | |
| let addSegment;
 | |
| /**
 | |
|  * A high-level API to associate a generated position with an original source position. Line is
 | |
|  * 1-based, but column is 0-based, due to legacy behavior in `source-map` library.
 | |
|  */
 | |
| let addMapping;
 | |
| /**
 | |
|  * Adds/removes the content of the source file to the source map.
 | |
|  */
 | |
| let setSourceContent;
 | |
| /**
 | |
|  * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects
 | |
|  * a sourcemap, or to JSON.stringify.
 | |
|  */
 | |
| let decodedMap;
 | |
| /**
 | |
|  * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects
 | |
|  * a sourcemap, or to JSON.stringify.
 | |
|  */
 | |
| let encodedMap;
 | |
| /**
 | |
|  * Returns an array of high-level mapping objects for every recorded segment, which could then be
 | |
|  * passed to the `source-map` library.
 | |
|  */
 | |
| let allMappings;
 | |
| /**
 | |
|  * Provides the state to generate a sourcemap.
 | |
|  */
 | |
| class GenMapping {
 | |
|     constructor({ file, sourceRoot } = {}) {
 | |
|         this._names = new SetArray();
 | |
|         this._sources = new SetArray();
 | |
|         this._sourcesContent = [];
 | |
|         this._mappings = [];
 | |
|         this.file = file;
 | |
|         this.sourceRoot = sourceRoot;
 | |
|     }
 | |
| }
 | |
| (() => {
 | |
|     addSegment = (map, genLine, genColumn, source, sourceLine, sourceColumn, name) => {
 | |
|         const { _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
 | |
|         const line = getLine(mappings, genLine);
 | |
|         if (source == null) {
 | |
|             const seg = [genColumn];
 | |
|             const index = getColumnIndex(line, genColumn, seg);
 | |
|             return insert(line, index, seg);
 | |
|         }
 | |
|         const sourcesIndex = put(sources, source);
 | |
|         const seg = name
 | |
|             ? [genColumn, sourcesIndex, sourceLine, sourceColumn, put(names, name)]
 | |
|             : [genColumn, sourcesIndex, sourceLine, sourceColumn];
 | |
|         const index = getColumnIndex(line, genColumn, seg);
 | |
|         if (sourcesIndex === sourcesContent.length)
 | |
|             sourcesContent[sourcesIndex] = null;
 | |
|         insert(line, index, seg);
 | |
|     };
 | |
|     addMapping = (map, mapping) => {
 | |
|         const { generated, source, original, name } = mapping;
 | |
|         return addSegment(map, generated.line - 1, generated.column, source, original == null ? undefined : original.line - 1, original === null || original === void 0 ? void 0 : original.column, name);
 | |
|     };
 | |
|     setSourceContent = (map, source, content) => {
 | |
|         const { _sources: sources, _sourcesContent: sourcesContent } = map;
 | |
|         sourcesContent[put(sources, source)] = content;
 | |
|     };
 | |
|     decodedMap = (map) => {
 | |
|         const { file, sourceRoot, _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
 | |
|         return {
 | |
|             version: 3,
 | |
|             file,
 | |
|             names: names.array,
 | |
|             sourceRoot: sourceRoot || undefined,
 | |
|             sources: sources.array,
 | |
|             sourcesContent,
 | |
|             mappings,
 | |
|         };
 | |
|     };
 | |
|     encodedMap = (map) => {
 | |
|         const decoded = decodedMap(map);
 | |
|         return Object.assign(Object.assign({}, decoded), { mappings: encode(decoded.mappings) });
 | |
|     };
 | |
|     allMappings = (map) => {
 | |
|         const out = [];
 | |
|         const { _mappings: mappings, _sources: sources, _names: names } = map;
 | |
|         for (let i = 0; i < mappings.length; i++) {
 | |
|             const line = mappings[i];
 | |
|             for (let j = 0; j < line.length; j++) {
 | |
|                 const seg = line[j];
 | |
|                 const generated = { line: i + 1, column: seg[0] };
 | |
|                 let source = undefined;
 | |
|                 let original = undefined;
 | |
|                 let name = undefined;
 | |
|                 if (seg.length !== 1) {
 | |
|                     source = sources.array[seg[1]];
 | |
|                     original = { line: seg[2] + 1, column: seg[3] };
 | |
|                     if (seg.length === 5)
 | |
|                         name = names.array[seg[4]];
 | |
|                 }
 | |
|                 out.push({ generated, source, original, name });
 | |
|             }
 | |
|         }
 | |
|         return out;
 | |
|     };
 | |
| })();
 | |
| function getLine(mappings, index) {
 | |
|     for (let i = mappings.length; i <= index; i++) {
 | |
|         mappings[i] = [];
 | |
|     }
 | |
|     return mappings[index];
 | |
| }
 | |
| function getColumnIndex(line, column, seg) {
 | |
|     let index = line.length;
 | |
|     for (let i = index - 1; i >= 0; i--, index--) {
 | |
|         const current = line[i];
 | |
|         const col = current[0];
 | |
|         if (col > column)
 | |
|             continue;
 | |
|         if (col < column)
 | |
|             break;
 | |
|         const cmp = compare(current, seg);
 | |
|         if (cmp === 0)
 | |
|             return index;
 | |
|         if (cmp < 0)
 | |
|             break;
 | |
|     }
 | |
|     return index;
 | |
| }
 | |
| function compare(a, b) {
 | |
|     let cmp = compareNum(a.length, b.length);
 | |
|     if (cmp !== 0)
 | |
|         return cmp;
 | |
|     // We've already checked genColumn
 | |
|     if (a.length === 1)
 | |
|         return 0;
 | |
|     cmp = compareNum(a[1], b[1]);
 | |
|     if (cmp !== 0)
 | |
|         return cmp;
 | |
|     cmp = compareNum(a[2], b[2]);
 | |
|     if (cmp !== 0)
 | |
|         return cmp;
 | |
|     cmp = compareNum(a[3], b[3]);
 | |
|     if (cmp !== 0)
 | |
|         return cmp;
 | |
|     if (a.length === 4)
 | |
|         return 0;
 | |
|     return compareNum(a[4], b[4]);
 | |
| }
 | |
| function compareNum(a, b) {
 | |
|     return a - b;
 | |
| }
 | |
| function insert(array, index, value) {
 | |
|     if (index === -1)
 | |
|         return;
 | |
|     for (let i = array.length; i > index; i--) {
 | |
|         array[i] = array[i - 1];
 | |
|     }
 | |
|     array[index] = value;
 | |
| }
 | |
| 
 | |
| export { GenMapping, addMapping, addSegment, allMappings, decodedMap, encodedMap, setSourceContent };
 | |
| //# sourceMappingURL=gen-mapping.mjs.map
 |