问题描述
在名为Test的目录中,我在文件中有一个java类 Word.java
,如下所示:
In a directory called Test I have a java class in a file Word.java
like this:
public class Word {
public String value;
public Word(String v) {
value = v;
}
}
在同一目录下我的antlr4语法Test.g4像这样:
And in the same directory my antlr4 grammar Test.g4 like this:
grammar Test;
@header {
import Test.Word;
}
@members {
ArrayList<Word> words = new ArrayList<Word>();
}
program
@after { System.out.println(words.toString()); }
: (ID { words.add(new Word($ID.text)); } )+
;
(在这个例子中,我只是使用Word而不是String来测试导入的东西。语法并且行动不是我的问题)
(In this example I'm just using Word instead of String to test the import thing. The grammar and the actions are not my problem yet)
现在,当我尝试运行 java org.antlr.v4.runtime.misc.TestRig Test时
这是结果:
Now, when I try to run java org.antlr.v4.runtime.misc.TestRig Test
this is the outcome:
引起:java.lang.ClassNotFoundException:Test.Word
Caused by: java.lang.ClassNotFoundException: Test.Word
blablabla
blablabla
这让我发疯,如何在.g4文件中导入我的类?我知道可以加载默认的java包但是如何导入我的自定义java类?
This is driving me crazy, how can I import my class in the .g4 file? I know that default java packages can be load but how do I import my custom java class?
tl; dr:我创建了一个java类并且想要使用它在我的antlr语法中。我怎么能这样做?
推荐答案
你的必须包含包含Test的目录。
Your CLASSPATH will have to include dir containing Test.
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