#include <stdio.h>
#include <stdlib.h>
#include "assemble.h"

Label_Node *create_label_list()
{
   Label_Node *head;
   head = (Label_Node *) malloc (sizeof(Label_Node));
   head->next = NULL;
   return head;
}

Command_Node *create_mnemonic_list()
{
   Command_Node *head;
   head = (Command_Node *) malloc (sizeof(Command_Node));
   head->next = NULL;
   return head;
}


void add_label_element (Label_Node *node, char name [20], long value)
{
   Label_Node *curr;
   
   curr = node;
   while (curr->next != NULL)
     curr = curr->next;
  
   strcpy(curr->name, name);
   curr->value = value;
   curr->next = (Label_Node *) malloc (sizeof(Label_Node)); 

   curr = curr->next;
   curr->next = NULL;
}



void add_mnemonic_element (Command_Node *node, char name [4], unsigned char *mode)
{
   Command_Node *curr;
   
   curr = node;
   while (curr->next != NULL)
     curr = curr->next;
  
   strcpy(curr->name, name);
   strcpy((char*) curr->modes, (char*) mode);
   curr->next = (Command_Node *) malloc (sizeof(Command_Node)); 

   curr = curr->next;
   curr->next = NULL;
}



long find_label_element (Label_Node *node, char name[20])
{
   Label_Node *curr;
   
   curr = node;
   
   while (curr->next != NULL)
     {
	if (strcmp(curr->name, name) == 0)
	  return curr->value;
	else
	  curr = curr->next;
     }
   return 0x666666;
}


unsigned char *find_mnemonic_element (Command_Node *node, char name[4])
{
   Command_Node *curr;
   
   curr = node;
   
   while (curr->next != NULL)
     {
	if (strcmp(curr->name, name) == 0)
	  return curr->modes;
	else
	  curr = curr->next;
     }
   return NULL;
}