label.c

#include "label.h"
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

static void pushLabelDef(labelDefArr_t *defs, char *name, uint16_t cmdNo)
{
  size_t num = defs->num++;

  if(num == 0)
    defs->ptr = malloc(sizeof(labelDef_t));
  else if(!(num & (num - 1)))
    defs->ptr = realloc(defs->ptr, (2 * num * sizeof(labelDef_t)));

  strcpy(defs->ptr[num].name, name);
  defs->ptr[num].cmdNo = cmdNo;
}

static uint16_t findOrPushLabelDef(labelDefArr_t *defs, char *name)
{
  uint16_t num = defs->num;

  for(size_t i = 0; i < num; i++)
    if(!strcmp(defs->ptr[i].name, name))
      return i;

  pushLabelDef(defs, name, 0);
  return num;
}

static void pushLabelUse(labelUseArr_t *uses, uint16_t cmdNo, uint16_t labelNo)
{
  size_t num = uses->num++;

  if(num == 0)
    uses->ptr = malloc(sizeof(labelUse_t));
  else if(!(num & (num - 1)))
    uses->ptr = realloc(uses->ptr, (2 * num * sizeof(labelUse_t)));

  uses->ptr[num].cmdNo = cmdNo;
  uses->ptr[num].labelNo = labelNo;
}

void addLabelDef(labelMapping_t *mapping, char *name, uint16_t cmdNo)
{
  uint16_t defNo = findOrPushLabelDef(&mapping->defs, name);
  mapping->defs.ptr[defNo].cmdNo = cmdNo;
}

void addLabelUse(labelMapping_t *mapping, char *name, uint16_t cmdNo)
{
  uint16_t defNo = findOrPushLabelDef(&mapping->defs, name);
  pushLabelUse(&mapping->uses, cmdNo, defNo);
}