ExprGenerator.java 文件源码

public static Operator gen(GeneratorContext ctx, Planner cursorMeta, String expr) {
    CharStream cs = new ANTLRInputStream(expr);
    MysqlLexer lexer = new MysqlLexer(cs);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    tokens.setTokenSource(lexer);
    MysqlParser parser = new MysqlParser(tokens);
    parser.setErrorHandler(new BailErrorStrategy());
    MysqlParser.ExprContext rule = parser.expr();
    return gen(ctx, cursorMeta, rule);
}