ANTLR - Remove node from AST -


I am making my first AST. I want to remove '=' from it.

I like something: 

  block | | ----------- | Statements Returns | Assignment | | ----- | ----- | Field = value Removal from my grammar file: Pars: block EOF - & gt; Block; Block: (Statement) * (Identifier ';' -> ^ (Block ^ (Statement of Statement *) ^ (Return Identifier?); Statement: Assignment ';' - & gt; Assignment; Assignment: Expression - & gt; ; ^ (Assignment expression); Expression: NAME '=' Identifier;   
 So, how can I remove '=' node which is printed in a tree?   
 
 
 By using inline operator ! , which removes nodes from the tree: / P> 
  Expression: NAME '='! Identifier;   
 Or using the rewriter operator:  
  Expression: NAME '=' identifier -> NAME identifier;   
 Questions told by respective operators:  
 Note that in your grammar there is no  assignment  token if you inject this kind of token If you want to do this, then put it in your  token {...}  and enter it in the rewrite rule:  
  grammar t; option {//. .} Token {assignment; } Statement: Assignment ';' - & gt; Assignments; Expression: NAME '=' identifier - & gt; ^ (Assignment name identifier);

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