javascript - 自 4.5 版起，ANTLR 无法生成 Javascript 代码

Question

当我尝试为我的语法生成监听器/访问者时，我收到以下错误:ANTLR cannot generate Javascript code as of version 4.5

有人知道如何解决吗？我仍然可以生成 C# 和 Java 代码。

Answer 1

来自 the docs :

This is pretty much the same as creating a Java lexer or parser, except you need to specify the language target, for example:

$ antlr4 -Dlanguage=JavaScript MyGrammar.g4

For a full list of antlr4 tool options, please visit the tool documentation page.

您的目标可能是 Javascript而不是必需的 JavaScript (注意大小写)；观察我执行两者时的区别:

╭─{ yaauie@celeborn:~/Desktop/tmp-20160108 }
╰─○ antlr4 -Dlanguage=JavaScript Hello.g4
[success]

╭─{ yaauie@celeborn:~/Desktop/tmp-20160108 }
╰─○ antlr4 -Dlanguage=Javascript Hello.g4
error(31):  ANTLR cannot generate Javascript code as of version 4.5.1
[error: 1]