import { ErrorListener as AntlrErrorListener } from 'antlr4'

class ErrorListener extends AntlrErrorListener<any> {
  private _errors: any[]

  constructor() {
    super()

    this._errors = []
  }

  syntaxError(
    recognizer: any,
    offendingSymbol: any,
    line: number,
    column: number,
    message: string
  ) {
    this._errors.push({ message, line, column })
  }

  getErrors(): any[] {
    return this._errors
  }

  hasErrors() {
    return this._errors.length > 0
  }
}

export default ErrorListener