title: How to output the AST built using ANTLR?
body: <p>I'm making a static analyzer for C. 
  I have done the lexer and parser using ANTLR in which generates Java code. </p>
  
  <p>Does ANTLR build the AST for us automatically by <code>options {output=AST;}</code>? Or do I have to make the tree myself? If it does, then how to spit out the nodes on that AST? </p>
  
  <p>I am currently thinking that the nodes on that AST will be used for making SSA, followed by data flow analysis in order to make the static analyzer. Am I on the right path? </p>