Exemplo n.º 1
0
  public static void main(String[] args) {
    try {
      CLI.parse(args, new String[0]);

      InputStream inputStream =
          args.length == 0 ? System.in : new java.io.FileInputStream(CLI.infile);

      if (CLI.target == CLI.SCAN) {
        DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
        Token token;
        boolean done = false;
        while (!done) {
          try {
            for (token = lexer.nextToken();
                token.getType() != DecafParserTokenTypes.EOF;
                token = lexer.nextToken()) {
              String type = "";
              String text = token.getText();

              switch (token.getType()) {
                case DecafScannerTokenTypes.ID:
                  type = " IDENTIFIER";
                  break;
              }
              System.out.println(token.getLine() + type + " " + text);
            }
            done = true;
          } catch (Exception e) {
            // print the error:
            System.out.println(CLI.infile + " " + e);
            lexer.consume();
          }
        }
      } else if (CLI.target == CLI.PARSE || CLI.target == CLI.DEFAULT) {
        DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
        DecafParser parser = new DecafParser(lexer);
        parser.program();
      }

    } catch (Exception e) {
      // print the error:
      System.out.println(CLI.infile + " " + e);
    }
  }
Exemplo n.º 2
0
  public static void main(String[] args) {
    try {
      CLI.parse(args, new String[0]);

      InputStream inputStream =
          args.length == 0 ? System.in : new java.io.FileInputStream(CLI.infile);

      if (CLI.target == CLI.SCAN) {
        DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
        Token token;
        boolean done = false;
        while (!done) {
          try {
            for (token = lexer.nextToken();
                token.getType() != DecafParserTokenTypes.EOF;
                token = lexer.nextToken()) {
              String type = "";
              String text = token.getText();

              switch (token.getType()) {
                case DecafScannerTokenTypes.ID:
                  type = " IDENTIFIER";
                  break;
                case DecafScannerTokenTypes.CHAR:
                  type = " CHARLITERAL";
                  break;
                case DecafScannerTokenTypes.TRUE:
                case DecafScannerTokenTypes.FALSE:
                  type = " BOOLEANLITERAL";
                  break;
                case DecafScannerTokenTypes.HEX:
                case DecafScannerTokenTypes.DECIMAL:
                  type = " INTLITERAL";
                  break;
                case DecafScannerTokenTypes.STRING:
                  type = " STRINGLITERAL";
                  break;
              }
              System.out.println(token.getLine() + type + " " + text);
            }
            done = true;
          } catch (Exception e) {
            // print the error:
            System.out.println(CLI.infile + " " + e);
            lexer.consume();
          }
        }
      } else if (CLI.target == CLI.PARSE || CLI.target == CLI.DEFAULT) {
        DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
        DecafParser parser = new DecafParser(lexer, CLI.debug);
        // DecafParser parser = new DecafParser (lexer);
        parser.program();
      } else if (CLI.target == CLI.INTER) {
        DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
        DecafParser parser = new DecafParser(lexer, CLI.debug);
        parser.program();
        IrNode irRoot = parser.getIrTree();
        SemanticChecker checker = new SemanticChecker(CLI.infile, CLI.debug);
        if (CLI.debug) System.out.println("--- checking -----");
        checker.checkProgram((IrClassDecl) irRoot);
      } else if (CLI.target == CLI.LOWIR) {
        DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
        DecafParser parser = new DecafParser(lexer, CLI.debug);
        parser.program();
        IrNode irRoot = parser.getIrTree();
        SemanticChecker checker = new SemanticChecker(CLI.infile, CLI.debug);
        if (CLI.debug) System.out.println("--- checking -----");
        checker.checkProgram((IrClassDecl) irRoot);
        CodeGen codegen = new CodeGen(irRoot, CLI.debug);
        codegen.genLowIr();
        codegen.printLowIr();
      }
    } catch (Exception e) {
      // print the error:
      System.out.println(CLI.infile + " " + e);
    }
  }