20 lines
812 B
TypeScript
20 lines
812 B
TypeScript
import { InputStream, CommonTokenStream, Lexer } from 'antlr4';
|
|
import { SparkSqlLexer } from '../lib/spark/SparkSqlLexer';
|
|
import { SparkSqlParser } from '../lib/spark/SparkSqlParser';
|
|
export * from '../lib/spark/SparkSqlVisitor';
|
|
export * from '../lib/spark/SparkSqlListener';
|
|
|
|
import BasicParser from './common/BasicParser';
|
|
|
|
export default class SparkSQL extends BasicParser {
|
|
public createLexer(input: string): Lexer {
|
|
const chars = new InputStream(input.toUpperCase()); // Some Lexer only support uppercase token, So you need transform
|
|
const lexer = <unknown> new SparkSqlLexer(chars) as Lexer;
|
|
return lexer;
|
|
}
|
|
public createParserFromLexer(lexer: Lexer) {
|
|
const tokenStream = new CommonTokenStream(lexer);
|
|
return new SparkSqlParser(tokenStream);
|
|
}
|
|
}
|