#pragma once
#include <stdint.h>

typedef enum node_kind_t {
  Semi,
  Comma,
  Assignop,
  Plus,
  Minus,
  Times,
  Div,
  And,
  Or,
  Dot,
  Not,
  Lp,
  Rp,
  Lb,
  Rb,
  Lc,
  Rc,
  Struct,
  Return,
  If,
  Else,
  While,
  Type_int,
  Type_float,
  Integer,
  Float,
  Ident,
  Line_comment,
  Block_comment,
  Program,
  ExtDefList,
  ExtDef,
  ExtDecList,
  Specifier,
  StructSpecifier,
  OptTag,
  Tag,
  VarDec,
  FunDec,
  VarList,
  ParamDec,
  CompSt,
  StmtList,
  Stmt,
  DefList,
  Def,
  DecList,
  Dec,
  Exp,
  Args
} NodeType;
typedef union value {
  double real;
  intptr_t integer;
  char const *id;
  void *null;
} ValueUnion;
typedef struct node {
  NodeType type;
  intptr_t line;
  intptr_t size;
  struct node **children;
  union value value;
} Node;

typedef Node *pNode;

pNode newNode(NodeType, intptr_t, intptr_t, Node **, ValueUnion);
ValueUnion nullValue();
void DFS(pNode, int);