#include "string.h"

#include <assert.h>
#include "utils.h"
#include <string.h>

StringPool string_pool_create(Arena* a)
{
  assert(a != NULL);
  assert(a->mem != NULL);
  StringPool sp;
  sp.a = a;
  LOG_DEBUG("String pool initialized on arena with block @ %p.", sp.a->mem);
  return sp;
}

StringView string_create(StringPool* sp, const char* s, size_t len)
{
  assert(sp != NULL);
  if(s == NULL) DIE("Invalid string supplied!");
  char* buf = (char*)arena_alloc(sp->a, len + 1);
  memcpy(buf, s, len);
  buf[len] = '\0';
  LOG_DEBUG("A string was created @ %p with data: \"%s\"", buf, buf);
  return (StringView){.buf = buf, .len=len};
}

StringView string_concat_ss(StringPool* sp, StringView* a, StringView* b)
{
  if(a == NULL) DIE("a must be a valid C-style string!");
  if(b == NULL) DIE("b must be a valid C-style string!");
  if(a->len <= 0 || b->len <= 0) DIE("size must be valid! a: %d, b: %d", a->len, b->len);
  size_t len = a->len + b->len;
  char* buf = (char*)arena_alloc(sp->a, len + 1);
  memcpy(buf, a->buf, a->len);
  char* bbuf_off = buf + a->len;
  memcpy(bbuf_off, b->buf, b->len);
  buf[len] = '\0';
  LOG_DEBUG("A string was created @ %p with data: \"%s\"", buf, buf);
  return (StringView){.buf = buf, .len = len};
}