553 lines
21 KiB
JavaScript
553 lines
21 KiB
JavaScript
|
import { encode, decode } from '@jridgewell/sourcemap-codec';
|
||
|
|
import resolveUri from '@jridgewell/resolve-uri';
|
||
|
|
|
||
|
|
function resolve(input, base) {
|
||
|
|
// The base is always treated as a directory, if it's not empty.
|
||
|
|
// https://github.com/mozilla/source-map/blob/8cb3ee57/lib/util.js#L327
|
||
|
|
// https://github.com/chromium/chromium/blob/da4adbb3/third_party/blink/renderer/devtools/front_end/sdk/SourceMap.js#L400-L401
|
||
|
|
if (base && !base.endsWith('/'))
|
||
|
|
base += '/';
|
||
|
|
return resolveUri(input, base);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Removes everything after the last "/", but leaves the slash.
|
||
|
|
*/
|
||
|
|
function stripFilename(path) {
|
||
|
|
if (!path)
|
||
|
|
return '';
|
||
|
|
const index = path.lastIndexOf('/');
|
||
|
|
return path.slice(0, index + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
const COLUMN = 0;
|
||
|
|
const SOURCES_INDEX = 1;
|
||
|
|
const SOURCE_LINE = 2;
|
||
|
|
const SOURCE_COLUMN = 3;
|
||
|
|
const NAMES_INDEX = 4;
|
||
|
|
const REV_GENERATED_LINE = 1;
|
||
|
|
const REV_GENERATED_COLUMN = 2;
|
||
|
|
|
||
|
|
function maybeSort(mappings, owned) {
|
||
|
|
const unsortedIndex = nextUnsortedSegmentLine(mappings, 0);
|
||
|
|
if (unsortedIndex === mappings.length)
|
||
|
|
return mappings;
|
||
|
|
// If we own the array (meaning we parsed it from JSON), then we're free to directly mutate it. If
|
||
|
|
// not, we do not want to modify the consumer's input array.
|
||
|
|
if (!owned)
|
||
|
|
mappings = mappings.slice();
|
||
|
|
for (let i = unsortedIndex; i < mappings.length; i = nextUnsortedSegmentLine(mappings, i + 1)) {
|
||
|
|
mappings[i] = sortSegments(mappings[i], owned);
|
||
|
|
}
|
||
|
|
return mappings;
|
||
|
|
}
|
||
|
|
function nextUnsortedSegmentLine(mappings, start) {
|
||
|
|
for (let i = start; i < mappings.length; i++) {
|
||
|
|
if (!isSorted(mappings[i]))
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
return mappings.length;
|
||
|
|
}
|
||
|
|
function isSorted(line) {
|
||
|
|
for (let j = 1; j < line.length; j++) {
|
||
|
|
if (line[j][COLUMN] < line[j - 1][COLUMN]) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
function sortSegments(line, owned) {
|
||
|
|
if (!owned)
|
||
|
|
line = line.slice();
|
||
|
|
return line.sort(sortComparator);
|
||
|
|
}
|
||
|
|
function sortComparator(a, b) {
|
||
|
|
return a[COLUMN] - b[COLUMN];
|
||
|
|
}
|
||
|
|
|
||
|
|
let found = false;
|
||
|
|
/**
|
||
|
|
* A binary search implementation that returns the index if a match is found.
|
||
|
|
* If no match is found, then the left-index (the index associated with the item that comes just
|
||
|
|
* before the desired index) is returned. To maintain proper sort order, a splice would happen at
|
||
|
|
* the next index:
|
||
|
|
*
|
||
|
|
* ```js
|
||
|
|
* const array = [1, 3];
|
||
|
|
* const needle = 2;
|
||
|
|
* const index = binarySearch(array, needle, (item, needle) => item - needle);
|
||
|
|
*
|
||
|
|
* assert.equal(index, 0);
|
||
|
|
* array.splice(index + 1, 0, needle);
|
||
|
|
* assert.deepEqual(array, [1, 2, 3]);
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
function binarySearch(haystack, needle, low, high) {
|
||
|
|
while (low <= high) {
|
||
|
|
const mid = low + ((high - low) >> 1);
|
||
|
|
const cmp = haystack[mid][COLUMN] - needle;
|
||
|
|
if (cmp === 0) {
|
||
|
|
found = true;
|
||
|
|
return mid;
|
||
|
|
}
|
||
|
|
if (cmp < 0) {
|
||
|
|
low = mid + 1;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
high = mid - 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
found = false;
|
||
|
|
return low - 1;
|
||
|
|
}
|
||
|
|
function upperBound(haystack, needle, index) {
|
||
|
|
for (let i = index + 1; i < haystack.length; index = i++) {
|
||
|
|
if (haystack[i][COLUMN] !== needle)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return index;
|
||
|
|
}
|
||
|
|
function lowerBound(haystack, needle, index) {
|
||
|
|
for (let i = index - 1; i >= 0; index = i--) {
|
||
|
|
if (haystack[i][COLUMN] !== needle)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return index;
|
||
|
|
}
|
||
|
|
function memoizedState() {
|
||
|
|
return {
|
||
|
|
lastKey: -1,
|
||
|
|
lastNeedle: -1,
|
||
|
|
lastIndex: -1,
|
||
|
|
};
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* This overly complicated beast is just to record the last tested line/column and the resulting
|
||
|
|
* index, allowing us to skip a few tests if mappings are monotonically increasing.
|
||
|
|
*/
|
||
|
|
function memoizedBinarySearch(haystack, needle, state, key) {
|
||
|
|
const { lastKey, lastNeedle, lastIndex } = state;
|
||
|
|
let low = 0;
|
||
|
|
let high = haystack.length - 1;
|
||
|
|
if (key === lastKey) {
|
||
|
|
if (needle === lastNeedle) {
|
||
|
|
found = lastIndex !== -1 && haystack[lastIndex][COLUMN] === needle;
|
||
|
|
return lastIndex;
|
||
|
|
}
|
||
|
|
if (needle >= lastNeedle) {
|
||
|
|
// lastIndex may be -1 if the previous needle was not found.
|
||
|
|
low = lastIndex === -1 ? 0 : lastIndex;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
high = lastIndex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
state.lastKey = key;
|
||
|
|
state.lastNeedle = needle;
|
||
|
|
return (state.lastIndex = binarySearch(haystack, needle, low, high));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Rebuilds the original source files, with mappings that are ordered by source line/column instead
|
||
|
|
// of generated line/column.
|
||
|
|
function buildBySources(decoded, memos) {
|
||
|
|
const sources = memos.map(buildNullArray);
|
||
|
|
for (let i = 0; i < decoded.length; i++) {
|
||
|
|
const line = decoded[i];
|
||
|
|
for (let j = 0; j < line.length; j++) {
|
||
|
|
const seg = line[j];
|
||
|
|
if (seg.length === 1)
|
||
|
|
continue;
|
||
|
|
const sourceIndex = seg[SOURCES_INDEX];
|
||
|
|
const sourceLine = seg[SOURCE_LINE];
|
||
|
|
const sourceColumn = seg[SOURCE_COLUMN];
|
||
|
|
const originalSource = sources[sourceIndex];
|
||
|
|
const originalLine = (originalSource[sourceLine] || (originalSource[sourceLine] = []));
|
||
|
|
const memo = memos[sourceIndex];
|
||
|
|
// The binary search either found a match, or it found the left-index just before where the
|
||
|
|
// segment should go. Either way, we want to insert after that. And there may be multiple
|
||
|
|
// generated segments associated with an original location, so there may need to move several
|
||
|
|
// indexes before we find where we need to insert.
|
||
|
|
const index = upperBound(originalLine, sourceColumn, memoizedBinarySearch(originalLine, sourceColumn, memo, sourceLine));
|
||
|
|
insert(originalLine, (memo.lastIndex = index + 1), [sourceColumn, i, seg[COLUMN]]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return sources;
|
||
|
|
}
|
||
|
|
function insert(array, index, value) {
|
||
|
|
for (let i = array.length; i > index; i--) {
|
||
|
|
array[i] = array[i - 1];
|
||
|
|
}
|
||
|
|
array[index] = value;
|
||
|
|
}
|
||
|
|
// Null arrays allow us to use ordered index keys without actually allocating contiguous memory like
|
||
|
|
// a real array. We use a null-prototype object to avoid prototype pollution and deoptimizations.
|
||
|
|
// Numeric properties on objects are magically sorted in ascending order by the engine regardless of
|
||
|
|
// the insertion order. So, by setting any numeric keys, even out of order, we'll get ascending
|
||
|
|
// order when iterating with for-in.
|
||
|
|
function buildNullArray() {
|
||
|
|
return { __proto__: null };
|
||
|
|
}
|
||
|
|
|
||
|
|
const AnyMap = function (map, mapUrl) {
|
||
|
|
const parsed = typeof map === 'string' ? JSON.parse(map) : map;
|
||
|
|
if (!('sections' in parsed))
|
||
|
|
return new TraceMap(parsed, mapUrl);
|
||
|
|
const mappings = [];
|
||
|
|
const sources = [];
|
||
|
|
const sourcesContent = [];
|
||
|
|
const names = [];
|
||
|
|
recurse(parsed, mapUrl, mappings, sources, sourcesContent, names, 0, 0, Infinity, Infinity);
|
||
|
|
const joined = {
|
||
|
|
version: 3,
|
||
|
|
file: parsed.file,
|
||
|
|
names,
|
||
|
|
sources,
|
||
|
|
sourcesContent,
|
||
|
|
mappings,
|
||
|
|
};
|
||
|
|
return presortedDecodedMap(joined);
|
||
|
|
};
|
||
|
|
function recurse(input, mapUrl, mappings, sources, sourcesContent, names, lineOffset, columnOffset, stopLine, stopColumn) {
|
||
|
|
const { sections } = input;
|
||
|
|
for (let i = 0; i < sections.length; i++) {
|
||
|
|
const { map, offset } = sections[i];
|
||
|
|
let sl = stopLine;
|
||
|
|
let sc = stopColumn;
|
||
|
|
if (i + 1 < sections.length) {
|
||
|
|
const nextOffset = sections[i + 1].offset;
|
||
|
|
sl = Math.min(stopLine, lineOffset + nextOffset.line);
|
||
|
|
if (sl === stopLine) {
|
||
|
|
sc = Math.min(stopColumn, columnOffset + nextOffset.column);
|
||
|
|
}
|
||
|
|
else if (sl < stopLine) {
|
||
|
|
sc = columnOffset + nextOffset.column;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
addSection(map, mapUrl, mappings, sources, sourcesContent, names, lineOffset + offset.line, columnOffset + offset.column, sl, sc);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function addSection(input, mapUrl, mappings, sources, sourcesContent, names, lineOffset, columnOffset, stopLine, stopColumn) {
|
||
|
|
if ('sections' in input)
|
||
|
|
return recurse(...arguments);
|
||
|
|
const map = new TraceMap(input, mapUrl);
|
||
|
|
const sourcesOffset = sources.length;
|
||
|
|
const namesOffset = names.length;
|
||
|
|
const decoded = decodedMappings(map);
|
||
|
|
const { resolvedSources, sourcesContent: contents } = map;
|
||
|
|
append(sources, resolvedSources);
|
||
|
|
append(names, map.names);
|
||
|
|
if (contents)
|
||
|
|
append(sourcesContent, contents);
|
||
|
|
else
|
||
|
|
for (let i = 0; i < resolvedSources.length; i++)
|
||
|
|
sourcesContent.push(null);
|
||
|
|
for (let i = 0; i < decoded.length; i++) {
|
||
|
|
const lineI = lineOffset + i;
|
||
|
|
// We can only add so many lines before we step into the range that the next section's map
|
||
|
|
// controls. When we get to the last line, then we'll start checking the segments to see if
|
||
|
|
// they've crossed into the column range. But it may not have any columns that overstep, so we
|
||
|
|
// still need to check that we don't overstep lines, too.
|
||
|
|
if (lineI > stopLine)
|
||
|
|
return;
|
||
|
|
// The out line may already exist in mappings (if we're continuing the line started by a
|
||
|
|
// previous section). Or, we may have jumped ahead several lines to start this section.
|
||
|
|
const out = getLine(mappings, lineI);
|
||
|
|
// On the 0th loop, the section's column offset shifts us forward. On all other lines (since the
|
||
|
|
// map can be multiple lines), it doesn't.
|
||
|
|
const cOffset = i === 0 ? columnOffset : 0;
|
||
|
|
const line = decoded[i];
|
||
|
|
for (let j = 0; j < line.length; j++) {
|
||
|
|
const seg = line[j];
|
||
|
|
const column = cOffset + seg[COLUMN];
|
||
|
|
// If this segment steps into the column range that the next section's map controls, we need
|
||
|
|
// to stop early.
|
||
|
|
if (lineI === stopLine && column >= stopColumn)
|
||
|
|
return;
|
||
|
|
if (seg.length === 1) {
|
||
|
|
out.push([column]);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
const sourcesIndex = sourcesOffset + seg[SOURCES_INDEX];
|
||
|
|
const sourceLine = seg[SOURCE_LINE];
|
||
|
|
const sourceColumn = seg[SOURCE_COLUMN];
|
||
|
|
out.push(seg.length === 4
|
||
|
|
? [column, sourcesIndex, sourceLine, sourceColumn]
|
||
|
|
: [column, sourcesIndex, sourceLine, sourceColumn, namesOffset + seg[NAMES_INDEX]]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function append(arr, other) {
|
||
|
|
for (let i = 0; i < other.length; i++)
|
||
|
|
arr.push(other[i]);
|
||
|
|
}
|
||
|
|
function getLine(arr, index) {
|
||
|
|
for (let i = arr.length; i <= index; i++)
|
||
|
|
arr[i] = [];
|
||
|
|
return arr[index];
|
||
|
|
}
|
||
|
|
|
||
|
|
const LINE_GTR_ZERO = '`line` must be greater than 0 (lines start at line 1)';
|
||
|
|
const COL_GTR_EQ_ZERO = '`column` must be greater than or equal to 0 (columns start at column 0)';
|
||
|
|
const LEAST_UPPER_BOUND = -1;
|
||
|
|
const GREATEST_LOWER_BOUND = 1;
|
||
|
|
/**
|
||
|
|
* Returns the encoded (VLQ string) form of the SourceMap's mappings field.
|
||
|
|
*/
|
||
|
|
let encodedMappings;
|
||
|
|
/**
|
||
|
|
* Returns the decoded (array of lines of segments) form of the SourceMap's mappings field.
|
||
|
|
*/
|
||
|
|
let decodedMappings;
|
||
|
|
/**
|
||
|
|
* A low-level API to find the segment associated with a generated line/column (think, from a
|
||
|
|
* stack trace). Line and column here are 0-based, unlike `originalPositionFor`.
|
||
|
|
*/
|
||
|
|
let traceSegment;
|
||
|
|
/**
|
||
|
|
* A higher-level API to find the source/line/column associated with a generated line/column
|
||
|
|
* (think, from a stack trace). Line is 1-based, but column is 0-based, due to legacy behavior in
|
||
|
|
* `source-map` library.
|
||
|
|
*/
|
||
|
|
let originalPositionFor;
|
||
|
|
/**
|
||
|
|
* Finds the generated line/column position of the provided source/line/column source position.
|
||
|
|
*/
|
||
|
|
let generatedPositionFor;
|
||
|
|
/**
|
||
|
|
* Finds all generated line/column positions of the provided source/line/column source position.
|
||
|
|
*/
|
||
|
|
let allGeneratedPositionsFor;
|
||
|
|
/**
|
||
|
|
* Iterates each mapping in generated position order.
|
||
|
|
*/
|
||
|
|
let eachMapping;
|
||
|
|
/**
|
||
|
|
* Retrieves the source content for a particular source, if its found. Returns null if not.
|
||
|
|
*/
|
||
|
|
let sourceContentFor;
|
||
|
|
/**
|
||
|
|
* A helper that skips sorting of the input map's mappings array, which can be expensive for larger
|
||
|
|
* maps.
|
||
|
|
*/
|
||
|
|
let presortedDecodedMap;
|
||
|
|
/**
|
||
|
|
* 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;
|
||
|
|
class TraceMap {
|
||
|
|
constructor(map, mapUrl) {
|
||
|
|
const isString = typeof map === 'string';
|
||
|
|
if (!isString && map._decodedMemo)
|
||
|
|
return map;
|
||
|
|
const parsed = (isString ? JSON.parse(map) : map);
|
||
|
|
const { version, file, names, sourceRoot, sources, sourcesContent } = parsed;
|
||
|
|
this.version = version;
|
||
|
|
this.file = file;
|
||
|
|
this.names = names || [];
|
||
|
|
this.sourceRoot = sourceRoot;
|
||
|
|
this.sources = sources;
|
||
|
|
this.sourcesContent = sourcesContent;
|
||
|
|
const from = resolve(sourceRoot || '', stripFilename(mapUrl));
|
||
|
|
this.resolvedSources = sources.map((s) => resolve(s || '', from));
|
||
|
|
const { mappings } = parsed;
|
||
|
|
if (typeof mappings === 'string') {
|
||
|
|
this._encoded = mappings;
|
||
|
|
this._decoded = undefined;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this._encoded = undefined;
|
||
|
|
this._decoded = maybeSort(mappings, isString);
|
||
|
|
}
|
||
|
|
this._decodedMemo = memoizedState();
|
||
|
|
this._bySources = undefined;
|
||
|
|
this._bySourceMemos = undefined;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
(() => {
|
||
|
|
encodedMappings = (map) => {
|
||
|
|
var _a;
|
||
|
|
return ((_a = map._encoded) !== null && _a !== void 0 ? _a : (map._encoded = encode(map._decoded)));
|
||
|
|
};
|
||
|
|
decodedMappings = (map) => {
|
||
|
|
return (map._decoded || (map._decoded = decode(map._encoded)));
|
||
|
|
};
|
||
|
|
traceSegment = (map, line, column) => {
|
||
|
|
const decoded = decodedMappings(map);
|
||
|
|
// It's common for parent source maps to have pointers to lines that have no
|
||
|
|
// mapping (like a "//# sourceMappingURL=") at the end of the child file.
|
||
|
|
if (line >= decoded.length)
|
||
|
|
return null;
|
||
|
|
const segments = decoded[line];
|
||
|
|
const index = traceSegmentInternal(segments, map._decodedMemo, line, column, GREATEST_LOWER_BOUND);
|
||
|
|
return index === -1 ? null : segments[index];
|
||
|
|
};
|
||
|
|
originalPositionFor = (map, { line, column, bias }) => {
|
||
|
|
line--;
|
||
|
|
if (line < 0)
|
||
|
|
throw new Error(LINE_GTR_ZERO);
|
||
|
|
if (column < 0)
|
||
|
|
throw new Error(COL_GTR_EQ_ZERO);
|
||
|
|
const decoded = decodedMappings(map);
|
||
|
|
// It's common for parent source maps to have pointers to lines that have no
|
||
|
|
// mapping (like a "//# sourceMappingURL=") at the end of the child file.
|
||
|
|
if (line >= decoded.length)
|
||
|
|
return OMapping(null, null, null, null);
|
||
|
|
const segments = decoded[line];
|
||
|
|
const index = traceSegmentInternal(segments, map._decodedMemo, line, column, bias || GREATEST_LOWER_BOUND);
|
||
|
|
if (index === -1)
|
||
|
|
return OMapping(null, null, null, null);
|
||
|
|
const segment = segments[index];
|
||
|
|
if (segment.length === 1)
|
||
|
|
return OMapping(null, null, null, null);
|
||
|
|
const { names, resolvedSources } = map;
|
||
|
|
return OMapping(resolvedSources[segment[SOURCES_INDEX]], segment[SOURCE_LINE] + 1, segment[SOURCE_COLUMN], segment.length === 5 ? names[segment[NAMES_INDEX]] : null);
|
||
|
|
};
|
||
|
|
allGeneratedPositionsFor = (map, { source, line, column, bias }) => {
|
||
|
|
// SourceMapConsumer uses LEAST_UPPER_BOUND for some reason, so we follow suit.
|
||
|
|
return generatedPosition(map, source, line, column, bias || LEAST_UPPER_BOUND, true);
|
||
|
|
};
|
||
|
|
generatedPositionFor = (map, { source, line, column, bias }) => {
|
||
|
|
return generatedPosition(map, source, line, column, bias || GREATEST_LOWER_BOUND, false);
|
||
|
|
};
|
||
|
|
eachMapping = (map, cb) => {
|
||
|
|
const decoded = decodedMappings(map);
|
||
|
|
const { names, resolvedSources } = map;
|
||
|
|
for (let i = 0; i < decoded.length; i++) {
|
||
|
|
const line = decoded[i];
|
||
|
|
for (let j = 0; j < line.length; j++) {
|
||
|
|
const seg = line[j];
|
||
|
|
const generatedLine = i + 1;
|
||
|
|
const generatedColumn = seg[0];
|
||
|
|
let source = null;
|
||
|
|
let originalLine = null;
|
||
|
|
let originalColumn = null;
|
||
|
|
let name = null;
|
||
|
|
if (seg.length !== 1) {
|
||
|
|
source = resolvedSources[seg[1]];
|
||
|
|
originalLine = seg[2] + 1;
|
||
|
|
originalColumn = seg[3];
|
||
|
|
}
|
||
|
|
if (seg.length === 5)
|
||
|
|
name = names[seg[4]];
|
||
|
|
cb({
|
||
|
|
generatedLine,
|
||
|
|
generatedColumn,
|
||
|
|
source,
|
||
|
|
originalLine,
|
||
|
|
originalColumn,
|
||
|
|
name,
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
sourceContentFor = (map, source) => {
|
||
|
|
const { sources, resolvedSources, sourcesContent } = map;
|
||
|
|
if (sourcesContent == null)
|
||
|
|
return null;
|
||
|
|
let index = sources.indexOf(source);
|
||
|
|
if (index === -1)
|
||
|
|
index = resolvedSources.indexOf(source);
|
||
|
|
return index === -1 ? null : sourcesContent[index];
|
||
|
|
};
|
||
|
|
presortedDecodedMap = (map, mapUrl) => {
|
||
|
|
const tracer = new TraceMap(clone(map, []), mapUrl);
|
||
|
|
tracer._decoded = map.mappings;
|
||
|
|
return tracer;
|
||
|
|
};
|
||
|
|
decodedMap = (map) => {
|
||
|
|
return clone(map, decodedMappings(map));
|
||
|
|
};
|
||
|
|
encodedMap = (map) => {
|
||
|
|
return clone(map, encodedMappings(map));
|
||
|
|
};
|
||
|
|
function generatedPosition(map, source, line, column, bias, all) {
|
||
|
|
line--;
|
||
|
|
if (line < 0)
|
||
|
|
throw new Error(LINE_GTR_ZERO);
|
||
|
|
if (column < 0)
|
||
|
|
throw new Error(COL_GTR_EQ_ZERO);
|
||
|
|
const { sources, resolvedSources } = map;
|
||
|
|
let sourceIndex = sources.indexOf(source);
|
||
|
|
if (sourceIndex === -1)
|
||
|
|
sourceIndex = resolvedSources.indexOf(source);
|
||
|
|
if (sourceIndex === -1)
|
||
|
|
return all ? [] : GMapping(null, null);
|
||
|
|
const generated = (map._bySources || (map._bySources = buildBySources(decodedMappings(map), (map._bySourceMemos = sources.map(memoizedState)))));
|
||
|
|
const segments = generated[sourceIndex][line];
|
||
|
|
if (segments == null)
|
||
|
|
return all ? [] : GMapping(null, null);
|
||
|
|
const memo = map._bySourceMemos[sourceIndex];
|
||
|
|
if (all)
|
||
|
|
return sliceGeneratedPositions(segments, memo, line, column, bias);
|
||
|
|
const index = traceSegmentInternal(segments, memo, line, column, bias);
|
||
|
|
if (index === -1)
|
||
|
|
return GMapping(null, null);
|
||
|
|
const segment = segments[index];
|
||
|
|
return GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]);
|
||
|
|
}
|
||
|
|
})();
|
||
|
|
function clone(map, mappings) {
|
||
|
|
return {
|
||
|
|
version: map.version,
|
||
|
|
file: map.file,
|
||
|
|
names: map.names,
|
||
|
|
sourceRoot: map.sourceRoot,
|
||
|
|
sources: map.sources,
|
||
|
|
sourcesContent: map.sourcesContent,
|
||
|
|
mappings,
|
||
|
|
};
|
||
|
|
}
|
||
|
|
function OMapping(source, line, column, name) {
|
||
|
|
return { source, line, column, name };
|
||
|
|
}
|
||
|
|
function GMapping(line, column) {
|
||
|
|
return { line, column };
|
||
|
|
}
|
||
|
|
function traceSegmentInternal(segments, memo, line, column, bias) {
|
||
|
|
let index = memoizedBinarySearch(segments, column, memo, line);
|
||
|
|
if (found) {
|
||
|
|
index = (bias === LEAST_UPPER_BOUND ? upperBound : lowerBound)(segments, column, index);
|
||
|
|
}
|
||
|
|
else if (bias === LEAST_UPPER_BOUND)
|
||
|
|
index++;
|
||
|
|
if (index === -1 || index === segments.length)
|
||
|
|
return -1;
|
||
|
|
return index;
|
||
|
|
}
|
||
|
|
function sliceGeneratedPositions(segments, memo, line, column, bias) {
|
||
|
|
let min = traceSegmentInternal(segments, memo, line, column, GREATEST_LOWER_BOUND);
|
||
|
|
// We ignored the bias when tracing the segment so that we're guarnateed to find the first (in
|
||
|
|
// insertion order) segment that matched. Even if we did respect the bias when tracing, we would
|
||
|
|
// still need to call `lowerBound()` to find the first segment, which is slower than just looking
|
||
|
|
// for the GREATEST_LOWER_BOUND to begin with. The only difference that matters for us is when the
|
||
|
|
// binary search didn't match, in which case GREATEST_LOWER_BOUND just needs to increment to
|
||
|
|
// match LEAST_UPPER_BOUND.
|
||
|
|
if (!found && bias === LEAST_UPPER_BOUND)
|
||
|
|
min++;
|
||
|
|
if (min === -1 || min === segments.length)
|
||
|
|
return [];
|
||
|
|
// We may have found the segment that started at an earlier column. If this is the case, then we
|
||
|
|
// need to slice all generated segments that match _that_ column, because all such segments span
|
||
|
|
// to our desired column.
|
||
|
|
const matchedColumn = found ? column : segments[min][COLUMN];
|
||
|
|
// The binary search is not guaranteed to find the lower bound when a match wasn't found.
|
||
|
|
if (!found)
|
||
|
|
min = lowerBound(segments, matchedColumn, min);
|
||
|
|
const max = upperBound(segments, matchedColumn, min);
|
||
|
|
const result = [];
|
||
|
|
for (; min <= max; min++) {
|
||
|
|
const segment = segments[min];
|
||
|
|
result.push(GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]));
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
export { AnyMap, GREATEST_LOWER_BOUND, LEAST_UPPER_BOUND, TraceMap, allGeneratedPositionsFor, decodedMap, decodedMappings, eachMapping, encodedMap, encodedMappings, generatedPositionFor, originalPositionFor, presortedDecodedMap, sourceContentFor, traceSegment };
|
||
|
|
//# sourceMappingURL=trace-mapping.mjs.map
|