ASTVisitor.h

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#pragma once
 
#include "AST.h"
 
class ASTVisitor {
public:
  virtual bool visit(ASTProgram *element) { return true; }
  virtual void endVisit(ASTProgram *element) {}
  virtual bool visit(ASTFunction *element) { return true; }
  virtual void endVisit(ASTFunction *element) {}
  virtual bool visit(ASTNumberExpr *element) { return true; }
  virtual void endVisit(ASTNumberExpr *element) {}
  virtual bool visit(ASTVariableExpr *element) { return true; }
  virtual void endVisit(ASTVariableExpr *element) {}
  virtual bool visit(ASTBinaryExpr *element) { return true; }
  virtual void endVisit(ASTBinaryExpr *element) {}
  virtual bool visit(ASTInputExpr *element) { return true; }
  virtual void endVisit(ASTInputExpr *element) {}
  virtual bool visit(ASTFunAppExpr *element) { return true; }
  virtual void endVisit(ASTFunAppExpr *element) {}
  virtual bool visit(ASTAllocExpr *element) { return true; }
  virtual void endVisit(ASTAllocExpr *element) {}
  virtual bool visit(ASTRefExpr *element) { return true; }
  virtual void endVisit(ASTRefExpr *element) {}
  virtual bool visit(ASTDeRefExpr *element) { return true; }
  virtual void endVisit(ASTDeRefExpr *element) {}
  virtual bool visit(ASTNullExpr *element) { return true; }
  virtual void endVisit(ASTNullExpr *element) {}
  virtual bool visit(ASTFieldExpr *element) { return true; }
  virtual void endVisit(ASTFieldExpr *element) {}
  virtual bool visit(ASTRecordExpr *element) { return true; }
  virtual void endVisit(ASTRecordExpr *element) {}
  virtual bool visit(ASTAccessExpr *element) { return true; }
  virtual void endVisit(ASTAccessExpr *element) {}
  virtual bool visit(ASTDeclNode *element) { return true; }
  virtual void endVisit(ASTDeclNode *element) {}
  virtual bool visit(ASTDeclStmt *element) { return true; }
  virtual void endVisit(ASTDeclStmt *element) {}
  virtual bool visit(ASTAssignStmt *element) { return true; }
  virtual void endVisit(ASTAssignStmt *element) {}
  virtual bool visit(ASTWhileStmt *element) { return true; }
  virtual void endVisit(ASTWhileStmt *element) {}
  virtual bool visit(ASTIfStmt *element) { return true; }
  virtual void endVisit(ASTIfStmt *element) {}
  virtual bool visit(ASTOutputStmt *element) { return true; }
  virtual void endVisit(ASTOutputStmt *element) {}
  virtual bool visit(ASTReturnStmt *element) { return true; }
  virtual void endVisit(ASTReturnStmt *element) {}
  virtual bool visit(ASTErrorStmt *element) { return true; }
  virtual void endVisit(ASTErrorStmt *element) {}
  virtual bool visit(ASTBlockStmt *element) { return true; }
  virtual void endVisit(ASTBlockStmt *element) {}
};