How to instruct the grammar to NOT generate certain methods in the ANTLR listener?

Question

I have this grammar:

foo : bar EOF;
bar : 'hello';

The listener interface, which ANTLR generates, contains these four methods:

public void enterFoo(final FooParser.LicenseContext ctx);
public void exitFoo(final FooParser.LicenseContext ctx);
public void enterBar(final FooParser.LicenseContext ctx);
public void exitBar(final FooParser.LicenseContext ctx);

Two of them are not needed for me: exitFoo() and enterBar() . Is it possible to tell ANTLR somehow to NOT generate them in the interface? I would actually prefer to find a way to somehow tell the grammar which grammar rules need those enter/exit methods, and all others would be ignored. Is it possible?

Answer 1

您不能抑制任何这些方法的生成，因为在为每个解析步骤触发侦听器时，解析器希望它们在那里。