SiddhiCompiler.java 文件源码

public static List<ExecutionPlan> parse(String source) throws SiddhiParserException {
        try {

            ANTLRInputStream input = new ANTLRInputStream(source);
            SiddhiQLGrammarLexer lexer = new SiddhiQLGrammarLexer(input);
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            SiddhiQLGrammarParser parser = new SiddhiQLGrammarParser(tokens);
            ParseTree tree = parser.query(); // parse

            SiddhiQLGrammarVisitor eval = new SiddhiQLGrammarBasedVisitorImpl();
            System.out.println(eval.visit(tree));
//          return (List<ExecutionPlan>) eval.visit(tree);
          return null;

        } catch (Throwable e) {
            throw new SiddhiParserException(e.getMessage(), e);
        }
    }