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authorCashew <52880648+Scrub1492@users.noreply.github.com>2024-02-07 17:54:49 +0700
committerGitHub <noreply@github.com>2024-02-07 10:54:49 +0000
commit0e9c28f9c713421c23e80a3a55d5233dd36d08de (patch)
treeeb1074122211b325fc98cdec49c53bd078d34a94 /ext/js/language/language-transformer.js
parent356adeb2dc482de3eee9af8ea116095c3a2d0d42 (diff)
Transformation performance optimizations (#645)
* perform transformation bounds * fix wrong continue * fix wrong undefined check * regex performance * suffixHeuristic * escape RegExp * fix escapeRegExp * move destructuring after suffixHeuristic check --------- Co-authored-by: Stefan Vukovic <stefanvukovic44@gmail.com> Co-authored-by: Darius Jahandarie <djahandarie@gmail.com>
Diffstat (limited to 'ext/js/language/language-transformer.js')
-rw-r--r--ext/js/language/language-transformer.js11
1 files changed, 9 insertions, 2 deletions
diff --git a/ext/js/language/language-transformer.js b/ext/js/language/language-transformer.js
index c9e261ea..7ad1895f 100644
--- a/ext/js/language/language-transformer.js
+++ b/ext/js/language/language-transformer.js
@@ -15,6 +15,8 @@
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
+import {escapeRegExp} from '../core/utilities.js';
+
export class LanguageTransformer {
constructor() {
/** @type {number} */
@@ -65,7 +67,9 @@ export class LanguageTransformer {
conditionsOut: conditionFlagsOut
});
}
- transforms2.push({name, rules: rules2});
+ const suffixes = rules.map((rule) => rule.suffixIn);
+ const suffixHeuristic = new RegExp(`(${suffixes.map((suffix) => escapeRegExp(suffix)).join('|')})$`);
+ transforms2.push({name, rules: rules2, suffixHeuristic});
}
this._nextFlagIndex = nextFlagIndex;
@@ -133,7 +137,10 @@ export class LanguageTransformer {
const results = [this._createTransformedText(sourceText, 0, [])];
for (let i = 0; i < results.length; ++i) {
const {text, conditions, trace} = results[i];
- for (const {name, rules} of this._transforms) {
+ for (const transform of this._transforms) {
+ if (!transform.suffixHeuristic.test(text)) { continue; }
+
+ const {name, rules} = transform;
for (let j = 0, jj = rules.length; j < jj; ++j) {
const rule = rules[j];
if (!LanguageTransformer.conditionsMatch(conditions, rule.conditionsIn)) { continue; }