SaltProcessor.java 文件源码

/** Parse data or input file and initialize the parse tree.   */
private void parseInput() {
    if (data == null)
        loadInputFile();
    if (data == null)
        throw new IllegalArgumentException("Unable to load input file or data is missing.");
    ANTLRInputStream input = new ANTLRInputStream(data);
    SaltLexer lexer = new SaltLexer(input);
    lexer.addErrorListener(new BaseErrorListener() {
        @Override
        public void syntaxError(Recognizer<?, ?> arg0, Object arg1, int arg2,
                int arg3, String arg4, RecognitionException arg5) {
            throw new RuntimeException(arg5);
        }
    });
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    SaltParser parser = new SaltParser(tokens);
    tree = parser.document();
    if (parser.getNumberOfSyntaxErrors() > 0) {
        System.out.println("Syntax error in file " + inputFile);
        return;
    }
}