9593251616

Committed 20 Jun 2024 07:14AM UTC coverage: 92.646% (+0.02%) from 92.624%

Build # 9593251616

Build Type

push

github

Committed by

Buristan

Commit Message

cmake: fix warning about minimum required version

Since CMake 3.27 compatibility with versions of CMake older than
3.5 is deprecated [1]. CMake produces an annoying warning on the
configuration stage:

| CMake Deprecation Warning at src/CMakeLists.txt:7 (cmake_minimum_required):
|  Compatibility with CMake < 3.5 will be removed from a future version of
|  CMake.

We cannot bump a minimum required CMake version without bumping it in
the Tarantool build system. However, we can set a <policy_max>
(introduced in CMake 3.12, see [1]) and suppress a warning. <policy_max>
means that this CMake version is known to work properly and will not
result in any build errors right away for higher versions.

Note that the current CMake minimum required version in Tarantool is
equal to 2.8, but <policy_max> is introduced in CMake 3.12 [1].
However, according to [1] it is not a problem because if CMake is "older
than 3.12, the extra ... dots will be seen as version component
separators, resulting in the ...<max> part being ignored and preserving
the pre-3.12 behavior of basing policies on <min>".

<policy_max> is set to 3.18 because compatibility with versions of CMake
older than 2.8.12 is deprecated. Calls to
cmake_minimum_required(VERSION) that do not specify at least 2.8.12 as
their policy version (optionally via ...<max>) will produce a
deprecation warning in CMake 3.19 and above [2]. Compatibility with
2.8.12 is needed for CMP0002 [3], see commit 049e296ee114 ("test: run
LuaJIT tests via CMake").

1. https://cmake.org/cmake/help/latest/command/cmake_minimum_required.html
2. https://cmake.org/cmake/help/latest/command/cmake_minimum_required.html#policy-settings
3. https://cmake.org/cmake/help/latest/policy/CMP0002.html

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95.38

/src/lj_ctype.c

/*
** C type management.
** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h
*/

#include "lj_obj.h"

#if LJ_HASFFI

#include "lj_gc.h"
#include "lj_err.h"
#include "lj_str.h"
#include "lj_tab.h"
#include "lj_strfmt.h"
#include "lj_ctype.h"
#include "lj_ccallback.h"
#include "lj_buf.h"

/* -- C type definitions -------------------------------------------------- */

/* Predefined typedefs. */
#define CTTDDEF(_) \
  /* Vararg handling. */ \
  _("va_list",                        P_VOID) \
  _("__builtin_va_list",        P_VOID) \
  _("__gnuc_va_list",                P_VOID) \
  /* From stddef.h. */ \
  _("ptrdiff_t",                INT_PSZ) \
  _("size_t",                        UINT_PSZ) \
  _("wchar_t",                        WCHAR) \
  /* Subset of stdint.h. */ \
  _("int8_t",                        INT8) \
  _("int16_t",                        INT16) \
  _("int32_t",                        INT32) \
  _("int64_t",                        INT64) \
  _("uint8_t",                        UINT8) \
  _("uint16_t",                        UINT16) \
  _("uint32_t",                        UINT32) \
  _("uint64_t",                        UINT64) \
  _("intptr_t",                        INT_PSZ) \
  _("uintptr_t",                UINT_PSZ) \
  /* From POSIX. */ \
  _("ssize_t",                        INT_PSZ) \
  /* End of typedef list. */

/* Keywords (only the ones we actually care for). */
#define CTKWDEF(_) \
  /* Type specifiers. */ \
  _("void",                -1,        CTOK_VOID) \
  _("_Bool",                0,        CTOK_BOOL) \
  _("bool",                1,        CTOK_BOOL) \
  _("char",                1,        CTOK_CHAR) \
  _("int",                4,        CTOK_INT) \
  _("__int8",                1,        CTOK_INT) \
  _("__int16",                2,        CTOK_INT) \
  _("__int32",                4,        CTOK_INT) \
  _("__int64",                8,        CTOK_INT) \
  _("float",                4,        CTOK_FP) \
  _("double",                8,        CTOK_FP) \
  _("long",                0,        CTOK_LONG) \
  _("short",                0,        CTOK_SHORT) \
  _("_Complex",                0,        CTOK_COMPLEX) \
  _("complex",                0,        CTOK_COMPLEX) \
  _("__complex",        0,        CTOK_COMPLEX) \
  _("__complex__",        0,        CTOK_COMPLEX) \
  _("signed",                0,        CTOK_SIGNED) \
  _("__signed",                0,        CTOK_SIGNED) \
  _("__signed__",        0,        CTOK_SIGNED) \
  _("unsigned",                0,        CTOK_UNSIGNED) \
  /* Type qualifiers. */ \
  _("const",                0,        CTOK_CONST) \
  _("__const",                0,        CTOK_CONST) \
  _("__const__",        0,        CTOK_CONST) \
  _("volatile",                0,        CTOK_VOLATILE) \
  _("__volatile",        0,        CTOK_VOLATILE) \
  _("__volatile__",        0,        CTOK_VOLATILE) \
  _("restrict",                0,        CTOK_RESTRICT) \
  _("__restrict",        0,        CTOK_RESTRICT) \
  _("__restrict__",        0,        CTOK_RESTRICT) \
  _("inline",                0,        CTOK_INLINE) \
  _("__inline",                0,        CTOK_INLINE) \
  _("__inline__",        0,        CTOK_INLINE) \
  /* Storage class specifiers. */ \
  _("typedef",                0,        CTOK_TYPEDEF) \
  _("extern",                0,        CTOK_EXTERN) \
  _("static",                0,        CTOK_STATIC) \
  _("auto",                0,        CTOK_AUTO) \
  _("register",                0,        CTOK_REGISTER) \
  /* GCC Attributes. */ \
  _("__extension__",        0,        CTOK_EXTENSION) \
  _("__attribute",        0,        CTOK_ATTRIBUTE) \
  _("__attribute__",        0,        CTOK_ATTRIBUTE) \
  _("asm",                0,        CTOK_ASM) \
  _("__asm",                0,        CTOK_ASM) \
  _("__asm__",                0,        CTOK_ASM) \
  /* MSVC Attributes. */ \
  _("__declspec",        0,        CTOK_DECLSPEC) \
  _("__cdecl",                CTCC_CDECL,        CTOK_CCDECL) \
  _("__thiscall",        CTCC_THISCALL,        CTOK_CCDECL) \
  _("__fastcall",        CTCC_FASTCALL,        CTOK_CCDECL) \
  _("__stdcall",        CTCC_STDCALL,        CTOK_CCDECL) \
  _("__ptr32",                4,        CTOK_PTRSZ) \
  _("__ptr64",                8,        CTOK_PTRSZ) \
  /* Other type specifiers. */ \
  _("struct",                0,        CTOK_STRUCT) \
  _("union",                0,        CTOK_UNION) \
  _("enum",                0,        CTOK_ENUM) \
  /* Operators. */ \
  _("sizeof",                0,        CTOK_SIZEOF) \
  _("__alignof",        0,        CTOK_ALIGNOF) \
  _("__alignof__",        0,        CTOK_ALIGNOF) \
  /* End of keyword list. */

/* Type info for predefined types. Size merged in. */
static CTInfo lj_ctype_typeinfo[] = {
#define CTTYINFODEF(id, sz, ct, info)        CTINFO((ct),(((sz)&0x3fu)<<10)+(info)),
#define CTTDINFODEF(name, id)                CTINFO(CT_TYPEDEF, CTID_##id),
#define CTKWINFODEF(name, sz, kw)        CTINFO(CT_KW,(((sz)&0x3fu)<<10)+(kw)),
CTTYDEF(CTTYINFODEF)
CTTDDEF(CTTDINFODEF)
CTKWDEF(CTKWINFODEF)
#undef CTTYINFODEF
#undef CTTDINFODEF
#undef CTKWINFODEF
  0
};

/* Predefined type names collected in a single string. */
static const char * const lj_ctype_typenames =
#define CTTDNAMEDEF(name, id)                name "\0"
#define CTKWNAMEDEF(name, sz, cds)        name "\0"
CTTDDEF(CTTDNAMEDEF)
CTKWDEF(CTKWNAMEDEF)
#undef CTTDNAMEDEF
#undef CTKWNAMEDEF
;

#define CTTYPEINFO_NUM                (sizeof(lj_ctype_typeinfo)/sizeof(CTInfo)-1)
#ifdef LUAJIT_CTYPE_CHECK_ANCHOR
#define CTTYPETAB_MIN                CTTYPEINFO_NUM
#else
#define CTTYPETAB_MIN                128
#endif

/* -- C type interning ---------------------------------------------------- */

#define ct_hashtype(info, size)        (hashrot(info, size) & CTHASH_MASK)
#define ct_hashname(name) \
  (hashrot(u32ptr(name), u32ptr(name) + HASH_BIAS) & CTHASH_MASK)

/* Create new type element. */
CTypeID lj_ctype_new(CTState *cts, CType **ctp)
{
  CTypeID id = cts->top;
  CType *ct;
  lj_assertCTS(cts->L, "uninitialized cts->L");
  if (LJ_UNLIKELY(id >= cts->sizetab)) {
    if (id >= CTID_MAX) lj_err_msg(cts->L, LJ_ERR_TABOV);
#ifdef LUAJIT_CTYPE_CHECK_ANCHOR
    ct = lj_mem_newvec(cts->L, id+1, CType);
    memcpy(ct, cts->tab, id*sizeof(CType));
    memset(cts->tab, 0, id*sizeof(CType));
    lj_mem_freevec(cts->g, cts->tab, cts->sizetab, CType);
    cts->tab = ct;
    cts->sizetab = id+1;
#else
    lj_mem_growvec(cts->L, cts->tab, cts->sizetab, CTID_MAX, CType);
#endif
  }
  cts->top = id+1;
  *ctp = ct = &cts->tab[id];
  ct->info = 0;
  ct->size = 0;
  ct->sib = 0;
  ct->next = 0;
  setgcrefnull(ct->name);
  return id;
}

/* Intern a type element. */
CTypeID lj_ctype_intern(CTState *cts, CTInfo info, CTSize size)
{
  uint32_t h = ct_hashtype(info, size);
  CTypeID id = cts->hash[h];
  lj_assertCTS(cts->L, "uninitialized cts->L");
  while (id) {
    CType *ct = ctype_get(cts, id);
    if (ct->info == info && ct->size == size)
      return id;
    id = ct->next;
  }
  id = cts->top;
  if (LJ_UNLIKELY(id >= cts->sizetab)) {
#ifdef LUAJIT_CTYPE_CHECK_ANCHOR
    CType *ct;
#endif
    if (id >= CTID_MAX) lj_err_msg(cts->L, LJ_ERR_TABOV);
#ifdef LUAJIT_CTYPE_CHECK_ANCHOR
    ct = lj_mem_newvec(cts->L, id+1, CType);
    memcpy(ct, cts->tab, id*sizeof(CType));
    memset(cts->tab, 0, id*sizeof(CType));
    lj_mem_freevec(cts->g, cts->tab, cts->sizetab, CType);
    cts->tab = ct;
    cts->sizetab = id+1;
#else
    lj_mem_growvec(cts->L, cts->tab, cts->sizetab, CTID_MAX, CType);
#endif
  }
  cts->top = id+1;
  cts->tab[id].info = info;
  cts->tab[id].size = size;
  cts->tab[id].sib = 0;
  cts->tab[id].next = cts->hash[h];
  setgcrefnull(cts->tab[id].name);
  cts->hash[h] = (CTypeID1)id;
  return id;
}

/* Add type element to hash table. */
static void ctype_addtype(CTState *cts, CType *ct, CTypeID id)
{
  uint32_t h = ct_hashtype(ct->info, ct->size);
  ct->next = cts->hash[h];
  cts->hash[h] = (CTypeID1)id;
}

/* Add named element to hash table. */
void lj_ctype_addname(CTState *cts, CType *ct, CTypeID id)
{
  uint32_t h = ct_hashname(gcref(ct->name));
  ct->next = cts->hash[h];
  cts->hash[h] = (CTypeID1)id;
}

/* Get a C type by name, matching the type mask. */
CTypeID lj_ctype_getname(CTState *cts, CType **ctp, GCstr *name, uint32_t tmask)
{
  CTypeID id = cts->hash[ct_hashname(name)];
  while (id) {
    CType *ct = ctype_get(cts, id);
    if (gcref(ct->name) == obj2gco(name) &&
        ((tmask >> ctype_type(ct->info)) & 1)) {
      *ctp = ct;
      return id;
    }
    id = ct->next;
  }
  *ctp = &cts->tab[0];  /* Simplify caller logic. ctype_get() would assert. */
  return 0;
}

/* Get a struct/union/enum/function field by name. */
CType *lj_ctype_getfieldq(CTState *cts, CType *ct, GCstr *name, CTSize *ofs,
                          CTInfo *qual)
{
  while (ct->sib) {
    ct = ctype_get(cts, ct->sib);
    if (gcref(ct->name) == obj2gco(name)) {
      *ofs = ct->size;
      return ct;
    }
    if (ctype_isxattrib(ct->info, CTA_SUBTYPE)) {
      CType *fct, *cct = ctype_child(cts, ct);
      CTInfo q = 0;
      while (ctype_isattrib(cct->info)) {
        if (ctype_attrib(cct->info) == CTA_QUAL) q |= cct->size;
        cct = ctype_child(cts, cct);
      }
      fct = lj_ctype_getfieldq(cts, cct, name, ofs, qual);
      if (fct) {
        if (qual) *qual |= q;
        *ofs += ct->size;
        return fct;
      }
    }
  }
  return NULL;  /* Not found. */
}

/* -- C type information -------------------------------------------------- */

/* Follow references and get raw type for a C type ID. */
CType *lj_ctype_rawref(CTState *cts, CTypeID id)
{
  CType *ct = ctype_get(cts, id);
  while (ctype_isattrib(ct->info) || ctype_isref(ct->info))
    ct = ctype_child(cts, ct);
  return ct;
}

/* Get size for a C type ID. Does NOT support VLA/VLS. */
CTSize lj_ctype_size(CTState *cts, CTypeID id)
{
  CType *ct = ctype_raw(cts, id);
  return ctype_hassize(ct->info) ? ct->size : CTSIZE_INVALID;
}

/* Get size for a variable-length C type. Does NOT support other C types. */
CTSize lj_ctype_vlsize(CTState *cts, CType *ct, CTSize nelem)
{
  uint64_t xsz = 0;
  if (ctype_isstruct(ct->info)) {
    CTypeID arrid = 0, fid = ct->sib;
    xsz = ct->size;  /* Add the struct size. */
    while (fid) {
      CType *ctf = ctype_get(cts, fid);
      if (ctype_type(ctf->info) == CT_FIELD)
        arrid = ctype_cid(ctf->info);  /* Remember last field of VLS. */
      fid = ctf->sib;
    }
    ct = ctype_raw(cts, arrid);
  }
  lj_assertCTS(ctype_isvlarray(ct->info), "VLA expected");
  ct = ctype_rawchild(cts, ct);  /* Get array element. */
  lj_assertCTS(ctype_hassize(ct->info), "bad VLA without size");
  /* Calculate actual size of VLA and check for overflow. */
  xsz += (uint64_t)ct->size * nelem;
  return xsz < 0x80000000u ? (CTSize)xsz : CTSIZE_INVALID;
}

/* Get type, qualifiers, size and alignment for a C type ID. */
CTInfo lj_ctype_info(CTState *cts, CTypeID id, CTSize *szp)
{
  CTInfo qual = 0;
  CType *ct = ctype_get(cts, id);
  for (;;) {
    CTInfo info = ct->info;
    if (ctype_isenum(info)) {
      /* Follow child. Need to look at its attributes, too. */
    } else if (ctype_isattrib(info)) {
      if (ctype_isxattrib(info, CTA_QUAL))
        qual |= ct->size;
      else if (ctype_isxattrib(info, CTA_ALIGN) && !(qual & CTFP_ALIGNED))
        qual |= CTFP_ALIGNED + CTALIGN(ct->size);
    } else {
      if (!(qual & CTFP_ALIGNED)) qual |= (info & CTF_ALIGN);
      qual |= (info & ~(CTF_ALIGN|CTMASK_CID));
      lj_assertCTS(ctype_hassize(info) || ctype_isfunc(info),
                   "ctype without size");
      *szp = ctype_isfunc(info) ? CTSIZE_INVALID : ct->size;
      break;
    }
    ct = ctype_get(cts, ctype_cid(info));
  }
  return qual;
}

/* Ditto, but follow a reference. */
CTInfo lj_ctype_info_raw(CTState *cts, CTypeID id, CTSize *szp)
{
  CType *ct = ctype_get(cts, id);
  if (ctype_isref(ct->info)) id = ctype_cid(ct->info);
  return lj_ctype_info(cts, id, szp);
}

/* Get ctype metamethod. */
cTValue *lj_ctype_meta(CTState *cts, CTypeID id, MMS mm)
{
  CType *ct = ctype_get(cts, id);
  cTValue *tv;
  while (ctype_isattrib(ct->info) || ctype_isref(ct->info)) {
    id = ctype_cid(ct->info);
    ct = ctype_get(cts, id);
  }
  if (ctype_isptr(ct->info) &&
      ctype_isfunc(ctype_get(cts, ctype_cid(ct->info))->info))
    tv = lj_tab_getstr(cts->miscmap, &cts->g->strempty);
  else
    tv = lj_tab_getinth(cts->miscmap, -(int32_t)id);
  if (tv && tvistab(tv) &&
      (tv = lj_tab_getstr(tabV(tv), mmname_str(cts->g, mm))) && !tvisnil(tv))
    return tv;
  return NULL;
}

/* -- C type representation ----------------------------------------------- */

/* Fixed max. length of a C type representation. */
#define CTREPR_MAX                512

typedef struct CTRepr {
  char *pb, *pe;
  CTState *cts;
  lua_State *L;
  int needsp;
  int ok;
  char buf[CTREPR_MAX];
} CTRepr;

/* Prepend string. */
static void ctype_prepstr(CTRepr *ctr, const char *str, MSize len)
{
  char *p = ctr->pb;
  if (ctr->buf + len+1 > p) { ctr->ok = 0; return; }
  if (ctr->needsp) *--p = ' ';
  ctr->needsp = 1;
  p -= len;
  while (len-- > 0) p[len] = str[len];
  ctr->pb = p;
}

#define ctype_preplit(ctr, str)        ctype_prepstr((ctr), "" str, sizeof(str)-1)

/* Prepend char. */
static void ctype_prepc(CTRepr *ctr, int c)
{
  if (ctr->buf >= ctr->pb) { ctr->ok = 0; return; }
  *--ctr->pb = c;
}

/* Prepend number. */
static void ctype_prepnum(CTRepr *ctr, uint32_t n)
{
  char *p = ctr->pb;
  if (ctr->buf + 10+1 > p) { ctr->ok = 0; return; }
  do { *--p = (char)('0' + n % 10); } while (n /= 10);
  ctr->pb = p;
  ctr->needsp = 0;
}

/* Append char. */
static void ctype_appc(CTRepr *ctr, int c)
{
  if (ctr->pe >= ctr->buf + CTREPR_MAX) { ctr->ok = 0; return; }
  *ctr->pe++ = c;
}

/* Append number. */
static void ctype_appnum(CTRepr *ctr, uint32_t n)
{
  char buf[10];
  char *p = buf+sizeof(buf);
  char *q = ctr->pe;
  if (q > ctr->buf + CTREPR_MAX - 10) { ctr->ok = 0; return; }
  do { *--p = (char)('0' + n % 10); } while (n /= 10);
  do { *q++ = *p++; } while (p < buf+sizeof(buf));
  ctr->pe = q;
}

/* Prepend qualifiers. */
static void ctype_prepqual(CTRepr *ctr, CTInfo info)
{
  if ((info & CTF_VOLATILE)) ctype_preplit(ctr, "volatile");
  if ((info & CTF_CONST)) ctype_preplit(ctr, "const");
}

/* Prepend named type. */
static void ctype_preptype(CTRepr *ctr, CType *ct, CTInfo qual, const char *t)
{
  if (gcref(ct->name)) {
    GCstr *str = gco2str(gcref(ct->name));
    ctype_prepstr(ctr, strdata(str), str->len);
  } else {
    if (ctr->needsp) ctype_prepc(ctr, ' ');
    ctype_prepnum(ctr, ctype_typeid(ctr->cts, ct));
    ctr->needsp = 1;
  }
  ctype_prepstr(ctr, t, (MSize)strlen(t));
  ctype_prepqual(ctr, qual);
}

static void ctype_repr(CTRepr *ctr, CTypeID id)
{
  CType *ct = ctype_get(ctr->cts, id);
  CTInfo qual = 0;
  int ptrto = 0;
  for (;;) {
    CTInfo info = ct->info;
    CTSize size = ct->size;
    switch (ctype_type(info)) {
    case CT_NUM:
      if ((info & CTF_BOOL)) {
        ctype_preplit(ctr, "bool");
      } else if ((info & CTF_FP)) {
        if (size == sizeof(double)) ctype_preplit(ctr, "double");
        else if (size == sizeof(float)) ctype_preplit(ctr, "float");
        else ctype_preplit(ctr, "long double");
      } else if (size == 1) {
        if (!((info ^ CTF_UCHAR) & CTF_UNSIGNED)) ctype_preplit(ctr, "char");
        else if (CTF_UCHAR) ctype_preplit(ctr, "signed char");
        else ctype_preplit(ctr, "unsigned char");
      } else if (size < 8) {
        if (size == 4) ctype_preplit(ctr, "int");
        else ctype_preplit(ctr, "short");
        if ((info & CTF_UNSIGNED)) ctype_preplit(ctr, "unsigned");
      } else {
        ctype_preplit(ctr, "_t");
        ctype_prepnum(ctr, size*8);
        ctype_preplit(ctr, "int");
        if ((info & CTF_UNSIGNED)) ctype_prepc(ctr, 'u');
      }
      ctype_prepqual(ctr, (qual|info));
      return;
    case CT_VOID:
      ctype_preplit(ctr, "void");
      ctype_prepqual(ctr, (qual|info));
      return;
    case CT_STRUCT:
      ctype_preptype(ctr, ct, qual, (info & CTF_UNION) ? "union" : "struct");
      return;
    case CT_ENUM:
      if (id == CTID_CTYPEID) {
        ctype_preplit(ctr, "ctype");
        return;
      }
      ctype_preptype(ctr, ct, qual, "enum");
      return;
    case CT_ATTRIB:
      if (ctype_attrib(info) == CTA_QUAL) qual |= size;
      break;
    case CT_PTR:
      if ((info & CTF_REF)) {
        ctype_prepc(ctr, '&');
      } else {
        ctype_prepqual(ctr, (qual|info));
        if (LJ_64 && size == 4) ctype_preplit(ctr, "__ptr32");
        ctype_prepc(ctr, '*');
      }
      qual = 0;
      ptrto = 1;
      ctr->needsp = 1;
      break;
    case CT_ARRAY:
      if (ctype_isrefarray(info)) {
        ctr->needsp = 1;
        if (ptrto) { ptrto = 0; ctype_prepc(ctr, '('); ctype_appc(ctr, ')'); }
        ctype_appc(ctr, '[');
        if (size != CTSIZE_INVALID) {
          CTSize csize = ctype_child(ctr->cts, ct)->size;
          ctype_appnum(ctr, csize ? size/csize : 0);
        } else if ((info & CTF_VLA)) {
          ctype_appc(ctr, '?');
        }
        ctype_appc(ctr, ']');
      } else if ((info & CTF_COMPLEX)) {
        if (size == 2*sizeof(float)) ctype_preplit(ctr, "float");
        ctype_preplit(ctr, "complex");
        return;
      } else {
        ctype_preplit(ctr, ")))");
        ctype_prepnum(ctr, size);
        ctype_preplit(ctr, "__attribute__((vector_size(");
      }
      break;
    case CT_FUNC:
      ctr->needsp = 1;
      if (ptrto) { ptrto = 0; ctype_prepc(ctr, '('); ctype_appc(ctr, ')'); }
      ctype_appc(ctr, '(');
      ctype_appc(ctr, ')');
      break;
    default:
      lj_assertG_(ctr->cts->g, 0, "bad ctype %08x", info);
      break;
    }
    ct = ctype_get(ctr->cts, ctype_cid(info));
  }
}

/* Return a printable representation of a C type. */
GCstr *lj_ctype_repr(lua_State *L, CTypeID id, GCstr *name)
{
  global_State *g = G(L);
  CTRepr ctr;
  ctr.pb = ctr.pe = &ctr.buf[CTREPR_MAX/2];
  ctr.cts = ctype_ctsG(g);
  ctr.L = L;
  ctr.ok = 1;
  ctr.needsp = 0;
  if (name) ctype_prepstr(&ctr, strdata(name), name->len);
  ctype_repr(&ctr, id);
  if (LJ_UNLIKELY(!ctr.ok)) return lj_str_newlit(L, "?");
  return lj_str_new(L, ctr.pb, ctr.pe - ctr.pb);
}

/* Convert int64_t/uint64_t to string with 'LL' or 'ULL' suffix. */
GCstr *lj_ctype_repr_int64(lua_State *L, uint64_t n, int isunsigned)
{
  char buf[1+20+3];
  char *p = buf+sizeof(buf);
  int sign = 0;
  *--p = 'L'; *--p = 'L';
  if (isunsigned) {
    *--p = 'U';
  } else if ((int64_t)n < 0) {
    n = (uint64_t)-(int64_t)n;
    sign = 1;
  }
  do { *--p = (char)('0' + n % 10); } while (n /= 10);
  if (sign) *--p = '-';
  return lj_str_new(L, p, (size_t)(buf+sizeof(buf)-p));
}

/* Convert complex to string with 'i' or 'I' suffix. */
GCstr *lj_ctype_repr_complex(lua_State *L, void *sp, CTSize size)
{
  SBuf *sb = lj_buf_tmp_(L);
  TValue re, im;
  if (size == 2*sizeof(double)) {
    re.n = *(double *)sp; im.n = ((double *)sp)[1];
  } else {
    re.n = (double)*(float *)sp; im.n = (double)((float *)sp)[1];
  }
  lj_strfmt_putfnum(sb, STRFMT_G14, re.n);
  if (!(im.u32.hi & 0x80000000u) || im.n != im.n) lj_buf_putchar(sb, '+');
  lj_strfmt_putfnum(sb, STRFMT_G14, im.n);
  lj_buf_putchar(sb, sbufP(sb)[-1] >= 'a' ? 'I' : 'i');
  return lj_buf_str(L, sb);
}

/* -- C type state -------------------------------------------------------- */

/* Initialize C type table and state. */
CTState *lj_ctype_init(lua_State *L)
{
  CTState *cts = lj_mem_newt(L, sizeof(CTState), CTState);
  CType *ct = lj_mem_newvec(L, CTTYPETAB_MIN, CType);
  const char *name = lj_ctype_typenames;
  CTypeID id;
  memset(cts, 0, sizeof(CTState));
  cts->tab = ct;
  cts->sizetab = CTTYPETAB_MIN;
  cts->top = CTTYPEINFO_NUM;
  cts->L = NULL;
  cts->g = G(L);
  for (id = 0; id < CTTYPEINFO_NUM; id++, ct++) {
    CTInfo info = lj_ctype_typeinfo[id];
    ct->size = (CTSize)((int32_t)(info << 16) >> 26);
    ct->info = info & 0xffff03ffu;
    ct->sib = 0;
    if (ctype_type(info) == CT_KW || ctype_istypedef(info)) {
      size_t len = strlen(name);
      GCstr *str = lj_str_new(L, name, len);
      ctype_setname(ct, str);
      name += len+1;
      lj_ctype_addname(cts, ct, id);
    } else {
      setgcrefnull(ct->name);
      ct->next = 0;
      if (!ctype_isenum(info)) ctype_addtype(cts, ct, id);
    }
  }
  setmref(G(L)->ctype_state, cts);
  return cts;
}

/* Free C type table and state. */
void lj_ctype_freestate(global_State *g)
{
  CTState *cts = ctype_ctsG(g);
  if (cts) {
    lj_ccallback_mcode_free(cts);
    lj_mem_freevec(g, cts->tab, cts->sizetab, CType);
    lj_mem_freevec(g, cts->cb.cbid, cts->cb.sizeid, CTypeID1);
    lj_mem_freet(g, cts);
  }
}

#endif

tarantool / luajit / 9593251616

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