symbol_table.c

   1 #include <string.h>
   2 #include "symbol_table.h"
   3
   4 void
   5 symbol_table_destroy(Symbol * table)
   6 {
   7     Symbol * first, second;
   8     first = table;
   9
  10     while(first != NULL){
  11
  12         second = first;
  13         first = first->next;
  14         free(second);
  15
  16     }
  17
  18     free(first);
  19     free(second);
  20
  21 }
  22
  23 char *
  24 symbol_table_dump(Symbol table)
  25 {
  26
  27     Symbol * temp;
  28     temp = table;
  29
  30     while(temp =! NULL){
  31
  32         printf("%s\n", temp->name);
  33         printf("%d\n", temp->type);
  34         temp = temp->next;
  35
  36     }
  37
  38     free(temp);
  39
  40 }
  41
  42 Symbol *
  43 symbol_insert(Symbol * table, char const * name, int type)
  44 {
  45
  46     Symbol * symbol = (Symbol *) malloc (sizeof(Symbol));
  47     symbol->next = table;
  48     strcpy (symbol->name,name);
  49     symbol->type = type;
  50     return symbol;
  51
  52 }
  53
  54 Symbol *
  55 symbol_lookup(Symbol * table, char const * name)
  56 {
  57
  58     Symbol * temp;
  59     temp = table;
  60
  61     while(strcmp (temp->name,name) && temp != NULL){
  62
  63         temp = temp->next;
  64
  65     }
  66
  67     return temp;
  68
  69 }
  70
  71 int
  72 symbol_exists(Symbol * table, char const * name)
  73 {
  74
  75     Symbol * temp;
  76     temp = table;
  77
  78     while(temp != NULL){
  79
  80         if(strcmp (temp->name,name)){
  81
  82             return 1;
  83
  84         }
  85
  86     }
  87
  88     return 0;
  89
  90 }
  91
  92