InputOutputDeclarationSource.java 文件源码

private Object readMatrix(List<Object> parameters) {
  String rationalString = in.nextLine();

  MatrixLexer matrixLexer = new MatrixLexer(new ANTLRInputStream(rationalString));

  MatrixParser matrixParser = new MatrixParser(new CommonTokenStream(matrixLexer));

  matrixParser.setErrorHandler(new BailErrorStrategy());

  try {
    MatrixParser.MatrixContext matrixContext = matrixParser.matrix();

    return Matrix.fromMatrixContext(matrixContext, Scope.NULL_SCOPE);
  } catch (ParseCancellationException e) {
    throw new InvalidReadRuntimeError("Invalid input read from stdin! Expected matrix format!");
  }
}