57 lines
1.5 KiB
TypeScript
57 lines
1.5 KiB
TypeScript
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import { CharStreams, CommonTokenStream, RecognitionException } from 'antlr4ts';
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import { DiagnosticSeverity } from 'vscode-languageserver-types';
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import { bfLexer } from './generated/bfLexer';
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import { bfParser } from './generated/bfParser';
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export interface TranslationError {
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line: number;
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charPositionInLine: number;
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msg: string;
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source?: any;
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type: DiagnosticSeverity;
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error?: RecognitionException;
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}
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export function getTree(str: string, fn: string) {
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const charStreams = CharStreams.fromString(str, fn);
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const lexer = new bfLexer(charStreams);
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// const errorListener = this.errorManager.newErrorListener();
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const issues: TranslationError[] = [];
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// remove the error listener. We want to put our own
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lexer.removeErrorListeners();
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lexer.addErrorListener({
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syntaxError(source, o, line, charPositionInLine, msg, error) {
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issues.push({
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line,
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charPositionInLine,
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msg,
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type: DiagnosticSeverity.Error,
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source,
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error,
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});
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},
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});
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const tokenStreams = new CommonTokenStream(lexer);
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const parser = new bfParser(tokenStreams);
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// remove the error listener. We want to put our own
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parser.removeErrorListeners();
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parser.addErrorListener({
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syntaxError(source, o, line, charPositionInLine, msg, error) {
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issues.push({
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line,
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charPositionInLine,
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msg,
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type: DiagnosticSeverity.Error,
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source,
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error,
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});
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},
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});
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const tree = parser.program();
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return { tree, issues, tokenStreams, charStreams };
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}
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