Use Grammar-Kit parser standalone Follow
Answered
Hello,
I am developing a language plugin for Intellij IDEA.
I want to use my parser in conjunction with other applications outside of the IDE as well.
- Am I allowed to do this?
- How do I achieve: "file.x" -> PsiFile and use it (read-only) in other Java applications?
Best Regards
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The main dependencies are PsiBuilderImpl and GeneratedParserUtilBase classes.
You can tear off unrelated code leaving only what's needed in your case.
You can also play with standalone Grammar-Kit light-psi-all.jar and LightPsi.java.
There're expression-console-sample artifact and light-psi run configuration in Grammar-Kit project.
Thanks I got it working by using
and with light-psi-all.jar.
When I run my simple example the instance is still blocking. How can I close it programmatically? Is there something like .close() .disconnect() I do not see? Or is System.exit(0); the way to go?
public static void main(String[] args){
try {
File file = new File(CountKeywords.class.getResource("/example.x").getFile());
PsiFile psiFile = XStandaloneParser.parse(file);
PsiElement root = psiFile.getNode().getPsi();
Collection<PsiElement> keywords = PsiTreeUtil.findChildrenOfType(root, XKeyword.class);
System.out.println("There are " + keywords.size() + " keywords.");
}catch (IOException ex){
ex.printStackTrace();
}
}
public static PsiFile parse(File file) throws IOException {
try {
return LightPsi.parseFile(file, new XParserDefinition());
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return null;
}