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#import "macros.h"
static size_t alignmentOfEncoding(const char **type, size_t *length,
bool inStruct);
static size_t sizeOfEncoding(const char **type, size_t *length);
static size_t
alignofArray(const char **type, size_t *length)
alignmentOfArray(const char **type, size_t *length)
{
size_t align;
size_t alignment;
assert(*length > 0);
(*type)++;
(*length)--;
while (*length > 0 && OFASCIIIsDigit(**type)) {
(*type)++;
(*length)--;
}
align = alignmentOfEncoding(type, length, true);
alignment = alignmentOfEncoding(type, length, true);
if (*length == 0 || **type != ']')
@throw [OFInvalidFormatException exception];
(*type)++;
(*length)--;
return align;
return alignment;
}
static size_t
alignofStruct(const char **type, size_t *length)
alignmentOfStruct(const char **type, size_t *length)
{
size_t align = 0;
size_t alignment = 0;
#if defined(OF_POWERPC) && defined(OF_MACOS)
bool first = true;
#endif
assert(*length > 0);
(*type)++;
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@throw [OFInvalidFormatException exception];
/* Skip '=' */
(*type)++;
(*length)--;
while (*length > 0 && **type != '}') {
size_t fieldAlign = alignmentOfEncoding(type, length, true);
size_t fieldAlignment = alignmentOfEncoding(type, length, true);
#if defined(OF_POWERPC) && defined(OF_MACOS)
if (!first && fieldAlign > 4)
fieldAlign = 4;
if (!first && fieldAlignment > 4)
fieldAlignment = 4;
first = false;
#endif
if (fieldAlign > align)
align = fieldAlign;
if (fieldAlignment > alignment)
alignment = fieldAlignment;
}
if (*length == 0 || **type != '}')
@throw [OFInvalidFormatException exception];
(*type)++;
(*length)--;
return align;
return alignment;
}
static size_t
alignofUnion(const char **type, size_t *length)
alignmentOfUnion(const char **type, size_t *length)
{
size_t align = 0;
size_t alignment = 0;
assert(*length > 0);
(*type)++;
(*length)--;
/* Skip name */
while (*length > 0 && **type != '=') {
(*type)++;
(*length)--;
}
if (*length == 0)
@throw [OFInvalidFormatException exception];
/* Skip '=' */
(*type)++;
(*length)--;
while (*length > 0 && **type != ')') {
size_t fieldAlign = alignmentOfEncoding(type, length, true);
size_t fieldAlignment = alignmentOfEncoding(type, length, true);
if (fieldAlign > align)
align = fieldAlign;
if (fieldAlignment > alignment)
alignment = fieldAlignment;
}
if (*length == 0 || **type != ')')
@throw [OFInvalidFormatException exception];
(*type)++;
(*length)--;
return align;
return alignment;
}
static size_t
alignmentOfEncoding(const char **type, size_t *length, bool inStruct)
{
size_t align;
size_t alignment;
if (*length == 0)
@throw [OFInvalidFormatException exception];
if (**type == 'r') {
(*type)++;
(*length)--;
if (*length == 0)
@throw [OFInvalidFormatException exception];
}
switch (**type) {
case 'c':
case 'C':
align = OF_ALIGNOF(char);
alignment = OF_ALIGNOF(char);
break;
case 'i':
case 'I':
align = OF_ALIGNOF(int);
alignment = OF_ALIGNOF(int);
break;
case 's':
case 'S':
align = OF_ALIGNOF(short);
alignment = OF_ALIGNOF(short);
break;
case 'l':
case 'L':
align = OF_ALIGNOF(long);
alignment = OF_ALIGNOF(long);
break;
case 'q':
case 'Q':
#if defined(OF_X86) && !defined(OF_WINDOWS)
if (inStruct)
align = 4;
alignment = 4;
else
#endif
align = OF_ALIGNOF(long long);
alignment = OF_ALIGNOF(long long);
break;
#ifdef __SIZEOF_INT128__
case 't':
case 'T':
align = __extension__ OF_ALIGNOF(__int128);
alignment = __extension__ OF_ALIGNOF(__int128);
break;
#endif
case 'f':
align = OF_ALIGNOF(float);
alignment = OF_ALIGNOF(float);
break;
case 'd':
#if defined(OF_X86) && !defined(OF_WINDOWS)
if (inStruct)
align = 4;
alignment = 4;
else
#endif
align = OF_ALIGNOF(double);
alignment = OF_ALIGNOF(double);
break;
case 'D':
#if defined(OF_X86) && !defined(OF_WINDOWS)
if (inStruct)
align = 4;
alignment = 4;
else
#endif
align = OF_ALIGNOF(long double);
alignment = OF_ALIGNOF(long double);
break;
case 'B':
align = OF_ALIGNOF(_Bool);
alignment = OF_ALIGNOF(_Bool);
break;
case 'v':
align = 0;
alignment = 0;
break;
case '*':
align = OF_ALIGNOF(char *);
alignment = OF_ALIGNOF(char *);
break;
case '@':
align = OF_ALIGNOF(id);
alignment = OF_ALIGNOF(id);
break;
case '#':
align = OF_ALIGNOF(Class);
alignment = OF_ALIGNOF(Class);
break;
case ':':
align = OF_ALIGNOF(SEL);
alignment = OF_ALIGNOF(SEL);
break;
case '[':
return alignofArray(type, length);
return alignmentOfArray(type, length);
case '{':
return alignofStruct(type, length);
return alignmentOfStruct(type, length);
case '(':
return alignofUnion(type, length);
return alignmentOfUnion(type, length);
case '^':
/* Just to skip over the rest */
(*type)++;
(*length)--;
alignmentOfEncoding(type, length, false);
return OF_ALIGNOF(void *);
#ifndef __STDC_NO_COMPLEX__
case 'j':
(*type)++;
(*length)--;
if (*length == 0)
@throw [OFInvalidFormatException exception];
switch (**type) {
case 'f':
align = OF_ALIGNOF(float _Complex);
alignment = OF_ALIGNOF(float _Complex);
break;
case 'd':
# if defined(OF_X86) && !defined(OF_WINDOWS)
if (inStruct)
align = 4;
alignment = 4;
else
# endif
align = OF_ALIGNOF(double _Complex);
alignment = OF_ALIGNOF(double _Complex);
break;
case 'D':
align = OF_ALIGNOF(long double _Complex);
alignment = OF_ALIGNOF(long double _Complex);
break;
default:
@throw [OFInvalidFormatException exception];
}
break;
#endif
default:
@throw [OFInvalidFormatException exception];
}
(*type)++;
(*length)--;
return align;
return alignment;
}
static size_t
sizeofArray(const char **type, size_t *length)
sizeOfArray(const char **type, size_t *length)
{
size_t count = 0;
size_t size;
assert(*length > 0);
(*type)++;
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if (SIZE_MAX / count < size)
@throw [OFOutOfRangeException exception];
return count * size;
}
static size_t
sizeofStruct(const char **type, size_t *length)
sizeOfStruct(const char **type, size_t *length)
{
size_t size = 0;
const char *typeCopy = *type;
size_t lengthCopy = *length;
size_t alignment = alignofStruct(&typeCopy, &lengthCopy);
size_t alignment = alignmentOfStruct(&typeCopy, &lengthCopy);
#if defined(OF_POWERPC) && defined(OF_MACOS)
bool first = true;
#endif
assert(*length > 0);
(*type)++;
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@throw [OFInvalidFormatException exception];
/* Skip '=' */
(*type)++;
(*length)--;
while (*length > 0 && **type != '}') {
size_t fieldSize, fieldAlign;
size_t fieldSize, fieldAlignment;
typeCopy = *type;
lengthCopy = *length;
fieldSize = sizeOfEncoding(type, length);
fieldAlign = alignmentOfEncoding(&typeCopy, &lengthCopy, true);
fieldAlignment = alignmentOfEncoding(&typeCopy, &lengthCopy,
true);
#if defined(OF_POWERPC) && defined(OF_MACOS)
if (!first && fieldAlign > 4)
fieldAlign = 4;
if (!first && fieldAlignment > 4)
fieldAlignment = 4;
first = false;
#endif
if (size % fieldAlign != 0) {
size_t padding = fieldAlign - (size % fieldAlign);
if (size % fieldAlignment != 0) {
size_t padding =
fieldAlignment - (size % fieldAlignment);
if (SIZE_MAX - size < padding)
@throw [OFOutOfRangeException exception];
size += padding;
}
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size += padding;
}
return size;
}
static size_t
sizeofUnion(const char **type, size_t *length)
sizeOfUnion(const char **type, size_t *length)
{
size_t size = 0;
assert(*length > 0);
(*type)++;
(*length)--;
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case '#':
size = sizeof(Class);
break;
case ':':
size = sizeof(SEL);
break;
case '[':
return sizeofArray(type, length);
return sizeOfArray(type, length);
case '{':
return sizeofStruct(type, length);
return sizeOfStruct(type, length);
case '(':
return sizeofUnion(type, length);
return sizeOfUnion(type, length);
case '^':
/* Just to skip over the rest */
(*type)++;
(*length)--;
sizeOfEncoding(type, length);
return sizeof(void *);
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