oushu/lava-oushudb-dt-sql-parser
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feat: use SLL mode (#269)

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* feat: use SLL(*) PredictionMode for better performance

* feat: optimize mysql grammar to fit SLL mode

* feat: optimize postgre grammmar to fit SLL mode

* feat: optimize spark grammar to fit SLL mode

* test: correct unit tests

* feat: optimize pgsql grammar
This commit is contained in:
Hayden
2024-03-19 11:27:23 +08:00
committed by GitHub
parent a05f099aa1
commit 3f62ad0d32
17 changed files with 29027 additions and 29449 deletions
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5
src/parser/common/basicParser.ts
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@ -8,6 +8,7 @@ import {
ParserRuleContext,
ParseTreeWalker,
ParseTreeListener,
PredictionMode,
} from 'antlr4ng';
import { CandidatesCollection, CodeCompletionCore } from 'antlr4-c3';
import { findCaretTokenIndex } from './utils/findCaretTokenIndex';
@ -110,7 +111,7 @@ export default abstract class BasicParser<
const lexer = this.createLexer(input, errorListener);
const tokenStream = new CommonTokenStream(lexer);
const parser = this.createParserFromTokenStream(tokenStream);
parser.interpreter.predictionMode = PredictionMode.SLL;
if (errorListener) {
parser.removeErrorListeners();
parser.addErrorListener(new ParseErrorListener(errorListener));
@ -155,6 +156,7 @@ export default abstract class BasicParser<
this._tokenStream.fill();
this._parser = this.createParserFromTokenStream(this._tokenStream);
this._parser.interpreter.predictionMode = PredictionMode.SLL;
this._parser.buildParseTrees = true;
this._parser.errorHandler = new ErrorStrategy();
@ -340,6 +342,7 @@ export default abstract class BasicParser<
tokenStream.fill();
const parser = this.createParserFromTokenStream(tokenStream);
parser.interpreter.predictionMode = PredictionMode.SLL;
parser.removeErrorListeners();
parser.buildParseTrees = true;
parser.errorHandler = new ErrorStrategy();