/*
* MessagePack unpacking routine template
*
* Copyright (C) 2008-2010 FURUHASHI Sadayuki
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef msgpack_unpack_func
#error msgpack_unpack_func template is not defined
#endif
#ifndef msgpack_unpack_callback
#error msgpack_unpack_callback template is not defined
#endif
#ifndef msgpack_unpack_struct
#error msgpack_unpack_struct template is not defined
#endif
#ifndef msgpack_unpack_struct_decl
#define msgpack_unpack_struct_decl(name) msgpack_unpack_struct(name)
#endif
#ifndef msgpack_unpack_object
#error msgpack_unpack_object type is not defined
#endif
#ifndef msgpack_unpack_user
#error msgpack_unpack_user type is not defined
#endif
#ifndef USE_CASE_RANGE
#if !defined(_MSC_VER)
#define USE_CASE_RANGE
#endif
#endif
msgpack_unpack_struct_decl(_stack) {
msgpack_unpack_object obj;
size_t count;
unsigned int ct;
msgpack_unpack_object map_key;
};
msgpack_unpack_struct_decl(_context) {
msgpack_unpack_user user;
unsigned int cs;
unsigned int trail;
unsigned int top;
/*
msgpack_unpack_struct(_stack)* stack;
unsigned int stack_size;
msgpack_unpack_struct(_stack) embed_stack[MSGPACK_EMBED_STACK_SIZE];
*/
msgpack_unpack_struct(_stack) stack[MSGPACK_EMBED_STACK_SIZE];
};
msgpack_unpack_func(void, _init)(msgpack_unpack_struct(_context)* ctx)
{
ctx->cs = MSGPACK_CS_HEADER;
ctx->trail = 0;
ctx->top = 0;
/*
ctx->stack = ctx->embed_stack;
ctx->stack_size = MSGPACK_EMBED_STACK_SIZE;
*/
ctx->stack[0].obj = msgpack_unpack_callback(_root)(&ctx->user);
}
/*
msgpack_unpack_func(void, _destroy)(msgpack_unpack_struct(_context)* ctx)
{
if(ctx->stack_size != MSGPACK_EMBED_STACK_SIZE) {
free(ctx->stack);
}
}
*/
msgpack_unpack_func(msgpack_unpack_object, _data)(msgpack_unpack_struct(_context)* ctx)
{
return (ctx)->stack[0].obj;
}
msgpack_unpack_func(int, _execute)(msgpack_unpack_struct(_context)* ctx, const char* data, size_t len, size_t* off)
{
assert(len >= *off);
{
const unsigned char* p = (unsigned char*)data + *off;
const unsigned char* const pe = (unsigned char*)data + len;
const void* n = NULL;
unsigned int trail = ctx->trail;
unsigned int cs = ctx->cs;
unsigned int top = ctx->top;
msgpack_unpack_struct(_stack)* stack = ctx->stack;
/*
unsigned int stack_size = ctx->stack_size;
*/
msgpack_unpack_user* user = &ctx->user;
msgpack_unpack_object obj;
msgpack_unpack_struct(_stack)* c = NULL;
int ret;
#define push_simple_value(func) \
if(msgpack_unpack_callback(func)(user, &obj) < 0) { goto _failed; } \
goto _push
#define push_fixed_value(func, arg) \
if(msgpack_unpack_callback(func)(user, arg, &obj) < 0) { goto _failed; } \
goto _push
#define push_variable_value(func, base, pos, len) \
if(msgpack_unpack_callback(func)(user, \
(const char*)base, (const char*)pos, len, &obj) < 0) { goto _failed; } \
goto _push
#define again_fixed_trail(_cs, trail_len) \
trail = trail_len; \
cs = _cs; \
goto _fixed_trail_again
#define again_fixed_trail_if_zero(_cs, trail_len, ifzero) \
trail = trail_len; \
if(trail == 0) { goto ifzero; } \
cs = _cs; \
goto _fixed_trail_again
#define start_container(func, count_, ct_) \
if(top >= MSGPACK_EMBED_STACK_SIZE) { goto _failed; } /* FIXME */ \
if(msgpack_unpack_callback(func)(user, count_, &stack[top].obj) < 0) { goto _failed; } \
if((count_) == 0) { obj = stack[top].obj; goto _push; } \
stack[top].ct = ct_; \
stack[top].count = count_; \
++top; \
/*printf("container %d count %d stack %d\n",stack[top].obj,count_,top);*/ \
/*printf("stack push %d\n", top);*/ \
/* FIXME \
if(top >= stack_size) { \
if(stack_size == MSGPACK_EMBED_STACK_SIZE) { \
size_t csize = sizeof(msgpack_unpack_struct(_stack)) * MSGPACK_EMBED_STACK_SIZE; \
size_t nsize = csize * 2; \
msgpack_unpack_struct(_stack)* tmp = (msgpack_unpack_struct(_stack)*)malloc(nsize); \
if(tmp == NULL) { goto _failed; } \
memcpy(tmp, ctx->stack, csize); \
ctx->stack = stack = tmp; \
ctx->stack_size = stack_size = MSGPACK_EMBED_STACK_SIZE * 2; \
} else { \
size_t nsize = sizeof(msgpack_unpack_struct(_stack)) * ctx->stack_size * 2; \
msgpack_unpack_struct(_stack)* tmp = (msgpack_unpack_struct(_stack)*)realloc(ctx->stack, nsize); \
if(tmp == NULL) { goto _failed; } \
ctx->stack = stack = tmp; \
ctx->stack_size = stack_size = stack_size * 2; \
} \
} \
*/ \
goto _header_again
#define NEXT_CS(p) \
((unsigned int)*p & 0x1f)
#ifdef USE_CASE_RANGE
#define SWITCH_RANGE_BEGIN switch(*p) {
#define SWITCH_RANGE(FROM, TO) case FROM ... TO:
#define SWITCH_RANGE_DEFAULT default:
#define SWITCH_RANGE_END }
#else
#define SWITCH_RANGE_BEGIN { if(0) {
#define SWITCH_RANGE(FROM, TO) } else if(FROM <= *p && *p <= TO) {
#define SWITCH_RANGE_DEFAULT } else {
#define SWITCH_RANGE_END } }
#endif
if(p == pe) { goto _out; }
do {
switch(cs) {
case MSGPACK_CS_HEADER:
SWITCH_RANGE_BEGIN
SWITCH_RANGE(0x00, 0x7f) // Positive Fixnum
push_fixed_value(_uint8, *(uint8_t*)p);
SWITCH_RANGE(0xe0, 0xff) // Negative Fixnum
push_fixed_value(_int8, *(int8_t*)p);
SWITCH_RANGE(0xc0, 0xdf) // Variable
switch(*p) {
case 0xc0: // nil
push_simple_value(_nil);
//case 0xc1: // string
// again_terminal_trail(NEXT_CS(p), p+1);
case 0xc2: // false
push_simple_value(_false);
case 0xc3: // true
push_simple_value(_true);
case 0xc4: // bin 8
case 0xc5: // bin 16
case 0xc6: // bin 32
again_fixed_trail(NEXT_CS(p), 1 << (((unsigned int)*p) & 0x03));
case 0xc7: // ext 8
case 0xc8: // ext 16
case 0xc9: // ext 32
again_fixed_trail(NEXT_CS(p), 1 << ((((unsigned int)*p) + 1) & 0x03));
case 0xca: // float
case 0xcb: // double
case 0xcc: // unsigned int 8
case 0xcd: // unsigned int 16
case 0xce: // unsigned int 32
case 0xcf: // unsigned int 64
case 0xd0: // signed int 8
case 0xd1: // signed int 16
case 0xd2: // signed int 32
case 0xd3: // signed int 64
again_fixed_trail(NEXT_CS(p), 1 << (((unsigned int)*p) & 0x03));
case 0xd4: // fixext 1
case 0xd5: // fixext 2
case 0xd6: // fixext 4
case 0xd7: // fixext 8
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE,
(1 << (((unsigned int)*p) & 0x03)) + 1, _ext_zero);
case 0xd8: // fixext 16
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 16+1, _ext_zero);
case 0xd9: // str 8
case 0xda: // str 16
case 0xdb: // str 32
again_fixed_trail(NEXT_CS(p), 1 << ((((unsigned int)*p) & 0x03) - 1));
case 0xdc: // array 16
case 0xdd: // array 32
case 0xde: // map 16
case 0xdf: // map 32
again_fixed_trail(NEXT_CS(p), 2u << (((unsigned int)*p) & 0x01));
default:
goto _failed;
}
SWITCH_RANGE(0xa0, 0xbf) // FixStr
again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, ((unsigned int)*p & 0x1f), _str_zero);
SWITCH_RANGE(0x90, 0x9f) // FixArray
start_container(_array, ((unsigned int)*p) & 0x0f, MSGPACK_CT_ARRAY_ITEM);
SWITCH_RANGE(0x80, 0x8f) // FixMap
start_container(_map, ((unsigned int)*p) & 0x0f, MSGPACK_CT_MAP_KEY);
SWITCH_RANGE_DEFAULT
goto _failed;
SWITCH_RANGE_END
// end MSGPACK_CS_HEADER
_fixed_trail_again:
++p;
default:
if((size_t)(pe - p) < trail) { goto _out; }
n = p; p += trail - 1;
switch(cs) {
//case MSGPACK_CS_
//case MSGPACK_CS_
case MSGPACK_CS_FLOAT: {
union { uint32_t i; float f; } mem;
_msgpack_load32(uint32_t, n, &mem.i);
push_fixed_value(_float, mem.f); }
case MSGPACK_CS_DOUBLE: {
union { uint64_t i; double f; } mem;
_msgpack_load64(uint64_t, n, &mem.i);
#if defined(TARGET_OS_IPHONE)
// ok
#elif defined(__arm__) && !(__ARM_EABI__) // arm-oabi
// https://github.com/msgpack/msgpack-perl/pull/1
mem.i = (mem.i & 0xFFFFFFFFUL) << 32UL | (mem.i >> 32UL);
#endif
push_fixed_value(_double, mem.f); }
case MSGPACK_CS_UINT_8:
push_fixed_value(_uint8, *(uint8_t*)n);
case MSGPACK_CS_UINT_16:{
uint16_t tmp;
_msgpack_load16(uint16_t,n,&tmp);
push_fixed_value(_uint16, tmp);
}
case MSGPACK_CS_UINT_32:{
uint32_t tmp;
_msgpack_load32(uint32_t,n,&tmp);
push_fixed_value(_uint32, tmp);
}
case MSGPACK_CS_UINT_64:{
uint64_t tmp;
_msgpack_load64(uint64_t,n,&tmp);
push_fixed_value(_uint64, tmp);
}
case MSGPACK_CS_INT_8:
push_fixed_value(_int8, *(int8_t*)n);
case MSGPACK_CS_INT_16:{
int16_t tmp;
_msgpack_load16(int16_t,n,&tmp);
push_fixed_value(_int16, tmp);
}
case MSGPACK_CS_INT_32:{
int32_t tmp;
_msgpack_load32(int32_t,n,&tmp);
push_fixed_value(_int32, tmp);
}
case MSGPACK_CS_INT_64:{
int64_t tmp;
_msgpack_load64(int64_t,n,&tmp);
push_fixed_value(_int64, tmp);
}
case MSGPACK_CS_FIXEXT_1:
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 1+1, _ext_zero);
case MSGPACK_CS_FIXEXT_2:
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 2+1, _ext_zero);
case MSGPACK_CS_FIXEXT_4:
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 4+1, _ext_zero);
case MSGPACK_CS_FIXEXT_8:
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 8+1, _ext_zero);
case MSGPACK_CS_FIXEXT_16:
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 16+1, _ext_zero);
case MSGPACK_CS_STR_8:
again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, *(uint8_t*)n, _str_zero);
case MSGPACK_CS_BIN_8:
again_fixed_trail_if_zero(MSGPACK_ACS_BIN_VALUE, *(uint8_t*)n, _bin_zero);
case MSGPACK_CS_EXT_8:
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, (*(uint8_t*)n) + 1, _ext_zero);
case MSGPACK_CS_STR_16:{
uint16_t tmp;
_msgpack_load16(uint16_t,n,&tmp);
again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, tmp, _str_zero);
}
case MSGPACK_CS_BIN_16:{
uint16_t tmp;
_msgpack_load16(uint16_t,n,&tmp);
again_fixed_trail_if_zero(MSGPACK_ACS_BIN_VALUE, tmp, _bin_zero);
}
case MSGPACK_CS_EXT_16:{
uint16_t tmp;
_msgpack_load16(uint16_t,n,&tmp);
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, tmp + 1, _ext_zero);
}
case MSGPACK_CS_STR_32:{
uint32_t tmp;
_msgpack_load32(uint32_t,n,&tmp);
again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, tmp, _str_zero);
}
case MSGPACK_CS_BIN_32:{
uint32_t tmp;
_msgpack_load32(uint32_t,n,&tmp);
again_fixed_trail_if_zero(MSGPACK_ACS_BIN_VALUE, tmp, _bin_zero);
}
case MSGPACK_CS_EXT_32:{
uint32_t tmp;
_msgpack_load32(uint32_t,n,&tmp);
again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, tmp + 1, _ext_zero);
}
case MSGPACK_ACS_STR_VALUE:
_str_zero:
push_variable_value(_str, data, n, trail);
case MSGPACK_ACS_BIN_VALUE:
_bin_zero:
push_variable_value(_bin, data, n, trail);
case MSGPACK_ACS_EXT_VALUE:
_ext_zero:
push_variable_value(_ext, data, n, trail);
case MSGPACK_CS_ARRAY_16:{
uint16_t tmp;
_msgpack_load16(uint16_t,n,&tmp);
start_container(_array, tmp, MSGPACK_CT_ARRAY_ITEM);
}
case MSGPACK_CS_ARRAY_32:{
/* FIXME security guard */
uint32_t tmp;
_msgpack_load32(uint32_t,n,&tmp);
start_container(_array, tmp, MSGPACK_CT_ARRAY_ITEM);
}
case MSGPACK_CS_MAP_16:{
uint16_t tmp;
_msgpack_load16(uint16_t,n,&tmp);
start_container(_map, tmp, MSGPACK_CT_MAP_KEY);
}
case MSGPACK_CS_MAP_32:{
/* FIXME security guard */
uint32_t tmp;
_msgpack_load32(uint32_t,n,&tmp);
start_container(_map, tmp, MSGPACK_CT_MAP_KEY);
}
default:
goto _failed;
}
}
_push:
if(top == 0) { goto _finish; }
c = &stack[top-1];
switch(c->ct) {
case MSGPACK_CT_ARRAY_ITEM:
if(msgpack_unpack_callback(_array_item)(user, &c->obj, obj) < 0) { goto _failed; }
if(--c->count == 0) {
obj = c->obj;
--top;
/*printf("stack pop %d\n", top);*/
goto _push;
}
goto _header_again;
case MSGPACK_CT_MAP_KEY:
c->map_key = obj;
c->ct = MSGPACK_CT_MAP_VALUE;
goto _header_again;
case MSGPACK_CT_MAP_VALUE:
if(msgpack_unpack_callback(_map_item)(user, &c->obj, c->map_key, obj) < 0) { goto _failed; }
if(--c->count == 0) {
obj = c->obj;
--top;
/*printf("stack pop %d\n", top);*/
goto _push;
}
c->ct = MSGPACK_CT_MAP_KEY;
goto _header_again;
default:
goto _failed;
}
_header_again:
cs = MSGPACK_CS_HEADER;
++p;
} while(p != pe);
goto _out;
_finish:
stack[0].obj = obj;
++p;
ret = 1;
/*printf("-- finish --\n"); */
goto _end;
_failed:
/*printf("** FAILED **\n"); */
ret = -1;
goto _end;
_out:
ret = 0;
goto _end;
_end:
ctx->cs = cs;
ctx->trail = trail;
ctx->top = top;
*off = (size_t)(p - (const unsigned char*)data);
return ret;
}
}
#undef msgpack_unpack_func
#undef msgpack_unpack_callback
#undef msgpack_unpack_struct
#undef msgpack_unpack_object
#undef msgpack_unpack_user
#undef push_simple_value
#undef push_fixed_value
#undef push_variable_value
#undef again_fixed_trail
#undef again_fixed_trail_if_zero
#undef start_container
#undef NEXT_CS
#undef SWITCH_RANGE_BEGIN
#undef SWITCH_RANGE
#undef SWITCH_RANGE_DEFAULT
#undef SWITCH_RANGE_END