为什么Antlr不生成lexer Java文件? [英] Why does Antlr not generate a lexer java file?

问题描述

Antlr3不会生成Mylexer.java.我使用AntlrWorks ...

Antlr3 does not generate Mylexer.java. I use AntlrWorks...

当我的语法像这样

语法mylexer;

grammar mylexer;

它会生成myParser.java

It does generate myParser.java

这看起来很简单. 我想知道可能是什么原因..以及解决方案... 我没有收到错误消息.

It looks like a simple thing.. I wonder what may be the reason.. and the solution... I get no error message.

推荐答案

我找到了一种方法. AntlrWorks 1.4似乎有一个错误. 当我按ctrl + shift + G生成时，它没有给出错误消息(实际上，我认为编译是可以的)，并且仅生成了一个解析器文件.发生这种情况时，光标不在源文件的第一行.

I found a way. AntlrWorks 1.4 seems to have a bug. When I pressed ctrl+shift+G to generate it did not give an error message (in fact, I got that compilation was ok) and generated a parser file only. The cursor was not on the first line of the source file when that happened.

当我在第一行中按ctrl + shift + G时，我收到一条错误消息，当我修复这些错误消息时， lexer文件也已生成.

WHen I pressed ctrl+shift+G in the first line, I got an error message and when I fixed those, a lexer file was generated too.

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