#include "symbol.h"

#include "../data/list.h"
#include "token.h"

FuncDef*
funcdef_new(List *p_body, List *p_params, int i_nparams) {
   FuncDef *p_fd = malloc(sizeof(FuncDef));
   p_fd->p_body    = p_body;
   p_fd->p_params  = p_params;
   p_fd->i_nparams = i_nparams;
   return (p_fd);
}

void
funcdef_delete(FuncDef *p_funcdef) {
   /* list_delete only frees list/node structs, not the token pointers
    * inside p_body — those tokens are GC-managed by the scanner. */
   list_delete(p_funcdef->p_body);
   /* Each param name was strdup'd at declaration time; free each one. */
   list_iterate(p_funcdef->p_params, free);
   list_delete(p_funcdef->p_params);
   free(p_funcdef);
}

Symbol*
symbol_new(SymbolType sym, void *p_val) {
   Symbol *p_symbol = malloc(sizeof(Symbol));

   p_symbol->sym = sym;
   p_symbol->p_val = p_val;
   p_symbol->i_refs = 1;

   return p_symbol;
}

void
symbol_delete(Symbol *p_symbol) {
   if (--p_symbol->i_refs == 0) {
      switch (symbol_get_sym(p_symbol)) {
      case SYM_PROCEDURE:
      {
         List *p_list_token = symbol_get_val(p_symbol);
         list_delete(p_list_token);
      }
      case SYM_ARRAY:
         symbol_delete(symbol_get_val(p_symbol));
         break;
      case SYM_FUNCTION:
      {
         FuncDef *p_funcdef = (FuncDef*) symbol_get_val(p_symbol);
         funcdef_delete(p_funcdef);
      }
      break;
         NO_DEFAULT;
      }
      free(p_symbol);
   }
}

void
symbol_cleanup_hash_syms_cb(void *p_void) {
   symbol_delete(p_void);
}

void
symbol_print(Symbol *p_symbol, char *c_key) {
   printf("%s: %s", sym_get_name(p_symbol->sym), c_key);

   switch (p_symbol->sym) {
   case SYM_BUILDIN:
   case SYM_CONSTANT:
      break;
   case SYM_PROCEDURE:
   case SYM_FUNCTION:
      //list_iterate(symbol_get_val(p_symbol), token_print_cb);
      break;
   case SYM_ARRAY:
      break;
   case SYM_VARIABLE:
      printf(" ");
      token_print(symbol_get_val(p_symbol));
      break;
   }

   printf("\n");
}

void
symbol_print_cb(void *p_void, char *c_key) {
   symbol_print(p_void, c_key);
}

char*
sym_get_name(SymbolType sym) {
   switch (sym) {
   case SYM_CONSTANT:
      return ("SYM_CONSTANT");
   case SYM_ARRAY:
      return ("SYM_ARRAY");
   case SYM_VARIABLE:
      return ("SYM_VARIABLE");
   case SYM_BUILDIN:
      return ("SYM_BUILDIN");
   case SYM_PROCEDURE:
      return ("SYM_PROCEDURE");
   case SYM_FUNCTION:
      return ("SYM_FUNCTION");
   }

   // Never reach this point
   return ("NONE");
}