ANTLR解析器挂在proxy.handshake调用上 [英] ANTLR parser hanging at proxy.handshake call

问题描述

我正在尝试使基本的ECMAScript解析器正常工作，并为 ECMAScript 3 ，似乎可以编译并生成适当的Lexer/Parser/Walker Java文件.
(在Eclipse 3.5的 ANTLR IDE插件中运行)

I am attempting to get a basic ECMAScript parser working, and found a complete ANTLR grammar for ECMAScript 3, which appears to compile ok and produces the appropriate Lexer/Parser/Walker Java files.
(Running inside ANTLR IDE plugin for Eclipse 3.5)

但是，当实际尝试将其与一些简单的测试代码一起使用时(遵循

However, when actually trying to use it with some simple test code (following guide on ANTLR wiki), it just hangs when trying to create the parser:

CharStream MyChars = new ANTLRFileStream(FileName); // FileName is valid
ES3Lexer MyLexer = new ES3Lexer(MyChars);
CommonTokenStream MyTokens = new CommonTokenStream(MyLexer);
MyTokens.setTokenSource(MyLexer);
ES3Parser MyParser = new ES3Parser( MyTokens ); // hangs here
ES3Parser.program_return MyReturn = MyParser.program();

我已经在ES3Parser构造函数内部找到了问题，在该构造函数中调用了函数proxy.handshake()-在此行之前，我可以成功执行System.out.println("text")，但之后却一无所获.

I've tracked down the problem to inside the ES3Parser constructor, where it's calling the function proxy.handshake() - before this line I can successfully do System.out.println("text") but after it I get nothing.

所以，我如何找出它为什么挂起并停止它-甚至只是绕过本节(我可以/应该禁用调试吗?)-只要它能够正常工作并使我继续做有用的事情.

So, how do I go about finding out why it's hanging, and stopping it - or even just bypassing this section (can/should I disable debugging?) - so long as that lets it work and allows me to get on with doing useful stuff.

推荐答案

我通过禁用ANTLR IDE插件中的调试代码生成来解决了这个问题.

I solved this by disabling the generation of debug code within the ANTLR IDE plugin.

此设置位于Windows>偏好设置">"ANTLR">代码生成"下.

The setting for this is under Windows > Preferences > ANTLR > Code Generation.

展开常规"部分，然后取消选中调试选项:

Expand the General section and untick the debug option:

_(来源: bpsite.net )

_{(source: bpsite.net)}

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