aboutsummaryrefslogtreecommitdiff
path: root/ext/bg/js/text-source-map.js
diff options
context:
space:
mode:
Diffstat (limited to 'ext/bg/js/text-source-map.js')
-rw-r--r--ext/bg/js/text-source-map.js118
1 files changed, 0 insertions, 118 deletions
diff --git a/ext/bg/js/text-source-map.js b/ext/bg/js/text-source-map.js
deleted file mode 100644
index 49b6d99f..00000000
--- a/ext/bg/js/text-source-map.js
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2020-2021 Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-class TextSourceMap {
- constructor(source, mapping=null) {
- this._source = source;
- this._mapping = (mapping !== null ? TextSourceMap.normalizeMapping(mapping) : null);
- }
-
- get source() {
- return this._source;
- }
-
- equals(other) {
- if (this === other) {
- return true;
- }
-
- const source = this._source;
- if (!(other instanceof TextSourceMap && source === other.source)) {
- return false;
- }
-
- let mapping = this._mapping;
- let otherMapping = other.getMappingCopy();
- if (mapping === null) {
- if (otherMapping === null) {
- return true;
- }
- mapping = TextSourceMap.createMapping(source);
- } else if (otherMapping === null) {
- otherMapping = TextSourceMap.createMapping(source);
- }
-
- const mappingLength = mapping.length;
- if (mappingLength !== otherMapping.length) {
- return false;
- }
-
- for (let i = 0; i < mappingLength; ++i) {
- if (mapping[i] !== otherMapping[i]) {
- return false;
- }
- }
-
- return true;
- }
-
- getSourceLength(finalLength) {
- const mapping = this._mapping;
- if (mapping === null) {
- return finalLength;
- }
-
- let sourceLength = 0;
- for (let i = 0; i < finalLength; ++i) {
- sourceLength += mapping[i];
- }
- return sourceLength;
- }
-
- combine(index, count) {
- if (count <= 0) { return; }
-
- if (this._mapping === null) {
- this._mapping = TextSourceMap.createMapping(this._source);
- }
-
- let sum = this._mapping[index];
- const parts = this._mapping.splice(index + 1, count);
- for (const part of parts) {
- sum += part;
- }
- this._mapping[index] = sum;
- }
-
- insert(index, ...items) {
- if (this._mapping === null) {
- this._mapping = TextSourceMap.createMapping(this._source);
- }
-
- this._mapping.splice(index, 0, ...items);
- }
-
- getMappingCopy() {
- return this._mapping !== null ? [...this._mapping] : null;
- }
-
- static createMapping(text) {
- return new Array(text.length).fill(1);
- }
-
- static normalizeMapping(mapping) {
- const result = [];
- for (const value of mapping) {
- result.push(
- (typeof value === 'number' && Number.isFinite(value)) ?
- Math.floor(value) :
- 0
- );
- }
- return result;
- }
-}