Examples with CharScanner antlr.CharScanner used on opensource projects

Example 1 with CharScanner

use of antlr.CharScanner in project groovy by apache.

the class LexerFrame method scanScript.

private void scanScript(final StringReader reader) throws Exception {
    scriptPane.read(reader, null);
    reader.reset();
    // create lexer
    final Constructor constructor = lexerClass.getConstructor(Reader.class);
    final CharScanner lexer = (CharScanner) constructor.newInstance(reader);
    tokenPane.setEditable(true);
    tokenPane.setText("");
    int line = 1;
    final ButtonGroup bg = new ButtonGroup();
    Token token;
    while (true) {
        token = lexer.nextToken();
        JToggleButton tokenButton = new JToggleButton((String) tokens.get(Integer.valueOf(token.getType())));
        bg.add(tokenButton);
        tokenButton.addActionListener(this);
        tokenButton.setToolTipText(token.getText());
        tokenButton.putClientProperty("token", token);
        tokenButton.setMargin(new Insets(0, 1, 0, 1));
        tokenButton.setFocusPainted(false);
        if (token.getLine() > line) {
            tokenPane.getDocument().insertString(tokenPane.getDocument().getLength(), "\n", null);
            line = token.getLine();
        }
        insertComponent(tokenButton);
        if (token.getType() == Token.EOF_TYPE) {
            break;
        }
    }
    tokenPane.setEditable(false);
    tokenPane.setCaretPosition(0);
    reader.close();
}