Why are antlr3 c# parser methods private?

问题

I'm building a parser in antlr which compiles to a working java target. When I retarget for c#2 it produces a parser in which all of the parse methods are private but marked with a [GrammarRule("rulename")] attribute.

What is the approved means to actually invoke the parser?

I am using ANTLR 3.3 Nov 30, 2010 12:45:30

Thanks, Andy

回答1:

Make at least one parser rule "public" like this:

grammar T;

options {
  language=CSharp2;
}

public parse
  :  privateRule+ EOF
  ;

privateRule
  :  Token+
  ;

// ...

You can then call parse() on the generated parser.

protected and private (the default if nothing is specified) are also supported.

来源：https://stackoverflow.com/questions/6411520/why-are-antlr3-c-sharp-parser-methods-private