forked from Fediversity/fediversity.eu
90 lines
2.6 KiB
JavaScript
90 lines
2.6 KiB
JavaScript
"use strict";Object.defineProperty(exports, "__esModule", {value: true});var _genmapping = require('@jridgewell/gen-mapping');
|
|
|
|
|
|
|
|
var _charcodes = require('./parser/util/charcodes');
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Generate a source map indicating that each line maps directly to the original line,
|
|
* with the tokens in their new positions.
|
|
*/
|
|
function computeSourceMap(
|
|
{code: generatedCode, mappings: rawMappings},
|
|
filePath,
|
|
options,
|
|
source,
|
|
tokens,
|
|
) {
|
|
const sourceColumns = computeSourceColumns(source, tokens);
|
|
const map = new (0, _genmapping.GenMapping)({file: options.compiledFilename});
|
|
let tokenIndex = 0;
|
|
// currentMapping is the output source index for the current input token being
|
|
// considered.
|
|
let currentMapping = rawMappings[0];
|
|
while (currentMapping === undefined && tokenIndex < rawMappings.length - 1) {
|
|
tokenIndex++;
|
|
currentMapping = rawMappings[tokenIndex];
|
|
}
|
|
let line = 0;
|
|
let lineStart = 0;
|
|
if (currentMapping !== lineStart) {
|
|
_genmapping.maybeAddSegment.call(void 0, map, line, 0, filePath, line, 0);
|
|
}
|
|
for (let i = 0; i < generatedCode.length; i++) {
|
|
if (i === currentMapping) {
|
|
const genColumn = currentMapping - lineStart;
|
|
const sourceColumn = sourceColumns[tokenIndex];
|
|
_genmapping.maybeAddSegment.call(void 0, map, line, genColumn, filePath, line, sourceColumn);
|
|
while (
|
|
(currentMapping === i || currentMapping === undefined) &&
|
|
tokenIndex < rawMappings.length - 1
|
|
) {
|
|
tokenIndex++;
|
|
currentMapping = rawMappings[tokenIndex];
|
|
}
|
|
}
|
|
if (generatedCode.charCodeAt(i) === _charcodes.charCodes.lineFeed) {
|
|
line++;
|
|
lineStart = i + 1;
|
|
if (currentMapping !== lineStart) {
|
|
_genmapping.maybeAddSegment.call(void 0, map, line, 0, filePath, line, 0);
|
|
}
|
|
}
|
|
}
|
|
const {sourceRoot, sourcesContent, ...sourceMap} = _genmapping.toEncodedMap.call(void 0, map);
|
|
return sourceMap ;
|
|
} exports.default = computeSourceMap;
|
|
|
|
/**
|
|
* Create an array mapping each token index to the 0-based column of the start
|
|
* position of the token.
|
|
*/
|
|
function computeSourceColumns(code, tokens) {
|
|
const sourceColumns = new Array(tokens.length);
|
|
let tokenIndex = 0;
|
|
let currentMapping = tokens[tokenIndex].start;
|
|
let lineStart = 0;
|
|
for (let i = 0; i < code.length; i++) {
|
|
if (i === currentMapping) {
|
|
sourceColumns[tokenIndex] = currentMapping - lineStart;
|
|
tokenIndex++;
|
|
currentMapping = tokens[tokenIndex].start;
|
|
}
|
|
if (code.charCodeAt(i) === _charcodes.charCodes.lineFeed) {
|
|
lineStart = i + 1;
|
|
}
|
|
}
|
|
return sourceColumns;
|
|
}
|