mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-27 07:54:57 +01:00
476 lines
15 KiB
C
476 lines
15 KiB
C
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/*
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* MessagePack unpacking routine template
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*
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* Copyright (C) 2008-2010 FURUHASHI Sadayuki
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef USE_CASE_RANGE
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#if !defined(_MSC_VER)
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#define USE_CASE_RANGE
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#endif
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#endif
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typedef struct unpack_stack {
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PyObject* obj;
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size_t size;
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size_t count;
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unsigned int ct;
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PyObject* map_key;
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} unpack_stack;
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struct unpack_context {
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unpack_user user;
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unsigned int cs;
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unsigned int trail;
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unsigned int top;
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/*
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unpack_stack* stack;
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unsigned int stack_size;
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unpack_stack embed_stack[MSGPACK_EMBED_STACK_SIZE];
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*/
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unpack_stack stack[MSGPACK_EMBED_STACK_SIZE];
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};
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static inline void unpack_init(unpack_context* ctx)
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{
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ctx->cs = CS_HEADER;
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ctx->trail = 0;
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ctx->top = 0;
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/*
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ctx->stack = ctx->embed_stack;
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ctx->stack_size = MSGPACK_EMBED_STACK_SIZE;
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*/
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ctx->stack[0].obj = unpack_callback_root(&ctx->user);
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}
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/*
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static inline void unpack_destroy(unpack_context* ctx)
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{
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if(ctx->stack_size != MSGPACK_EMBED_STACK_SIZE) {
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free(ctx->stack);
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}
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}
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*/
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static inline PyObject* unpack_data(unpack_context* ctx)
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{
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return (ctx)->stack[0].obj;
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}
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template <bool construct>
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static inline int unpack_execute(unpack_context* ctx, const char* data, size_t len, size_t* off)
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{
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assert(len >= *off);
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const unsigned char* p = (unsigned char*)data + *off;
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const unsigned char* const pe = (unsigned char*)data + len;
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const void* n = NULL;
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unsigned int trail = ctx->trail;
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unsigned int cs = ctx->cs;
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unsigned int top = ctx->top;
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unpack_stack* stack = ctx->stack;
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/*
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unsigned int stack_size = ctx->stack_size;
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*/
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unpack_user* user = &ctx->user;
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PyObject* obj;
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unpack_stack* c = NULL;
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int ret;
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#define construct_cb(name) \
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construct && unpack_callback ## name
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#define push_simple_value(func) \
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if(construct_cb(func)(user, &obj) < 0) { goto _failed; } \
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goto _push
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#define push_fixed_value(func, arg) \
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if(construct_cb(func)(user, arg, &obj) < 0) { goto _failed; } \
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goto _push
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#define push_variable_value(func, base, pos, len) \
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if(construct_cb(func)(user, \
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(const char*)base, (const char*)pos, len, &obj) < 0) { goto _failed; } \
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goto _push
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#define again_fixed_trail(_cs, trail_len) \
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trail = trail_len; \
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cs = _cs; \
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goto _fixed_trail_again
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#define again_fixed_trail_if_zero(_cs, trail_len, ifzero) \
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trail = trail_len; \
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if(trail == 0) { goto ifzero; } \
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cs = _cs; \
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goto _fixed_trail_again
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#define start_container(func, count_, ct_) \
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if(top >= MSGPACK_EMBED_STACK_SIZE) { goto _failed; } /* FIXME */ \
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if(construct_cb(func)(user, count_, &stack[top].obj) < 0) { goto _failed; } \
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if((count_) == 0) { obj = stack[top].obj; \
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if (construct_cb(func##_end)(user, &obj) < 0) { goto _failed; } \
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goto _push; } \
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stack[top].ct = ct_; \
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stack[top].size = count_; \
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stack[top].count = 0; \
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++top; \
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/*printf("container %d count %d stack %d\n",stack[top].obj,count_,top);*/ \
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/*printf("stack push %d\n", top);*/ \
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/* FIXME \
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if(top >= stack_size) { \
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if(stack_size == MSGPACK_EMBED_STACK_SIZE) { \
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size_t csize = sizeof(unpack_stack) * MSGPACK_EMBED_STACK_SIZE; \
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size_t nsize = csize * 2; \
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unpack_stack* tmp = (unpack_stack*)malloc(nsize); \
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if(tmp == NULL) { goto _failed; } \
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memcpy(tmp, ctx->stack, csize); \
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ctx->stack = stack = tmp; \
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ctx->stack_size = stack_size = MSGPACK_EMBED_STACK_SIZE * 2; \
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} else { \
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size_t nsize = sizeof(unpack_stack) * ctx->stack_size * 2; \
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unpack_stack* tmp = (unpack_stack*)realloc(ctx->stack, nsize); \
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if(tmp == NULL) { goto _failed; } \
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ctx->stack = stack = tmp; \
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ctx->stack_size = stack_size = stack_size * 2; \
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} \
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} \
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*/ \
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goto _header_again
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#define NEXT_CS(p) ((unsigned int)*p & 0x1f)
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#ifdef USE_CASE_RANGE
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#define SWITCH_RANGE_BEGIN switch(*p) {
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#define SWITCH_RANGE(FROM, TO) case FROM ... TO:
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#define SWITCH_RANGE_DEFAULT default:
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#define SWITCH_RANGE_END }
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#else
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#define SWITCH_RANGE_BEGIN { if(0) {
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#define SWITCH_RANGE(FROM, TO) } else if(FROM <= *p && *p <= TO) {
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#define SWITCH_RANGE_DEFAULT } else {
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#define SWITCH_RANGE_END } }
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#endif
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if(p == pe) { goto _out; }
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do {
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switch(cs) {
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case CS_HEADER:
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SWITCH_RANGE_BEGIN
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SWITCH_RANGE(0x00, 0x7f) // Positive Fixnum
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push_fixed_value(_uint8, *(uint8_t*)p);
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SWITCH_RANGE(0xe0, 0xff) // Negative Fixnum
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push_fixed_value(_int8, *(int8_t*)p);
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SWITCH_RANGE(0xc0, 0xdf) // Variable
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switch(*p) {
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case 0xc0: // nil
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push_simple_value(_nil);
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//case 0xc1: // never used
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case 0xc2: // false
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push_simple_value(_false);
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case 0xc3: // true
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push_simple_value(_true);
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case 0xc4: // bin 8
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again_fixed_trail(NEXT_CS(p), 1);
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case 0xc5: // bin 16
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again_fixed_trail(NEXT_CS(p), 2);
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case 0xc6: // bin 32
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again_fixed_trail(NEXT_CS(p), 4);
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case 0xc7: // ext 8
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again_fixed_trail(NEXT_CS(p), 1);
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case 0xc8: // ext 16
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again_fixed_trail(NEXT_CS(p), 2);
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case 0xc9: // ext 32
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again_fixed_trail(NEXT_CS(p), 4);
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case 0xca: // float
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case 0xcb: // double
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case 0xcc: // unsigned int 8
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case 0xcd: // unsigned int 16
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case 0xce: // unsigned int 32
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case 0xcf: // unsigned int 64
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case 0xd0: // signed int 8
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case 0xd1: // signed int 16
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case 0xd2: // signed int 32
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case 0xd3: // signed int 64
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again_fixed_trail(NEXT_CS(p), 1 << (((unsigned int)*p) & 0x03));
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case 0xd4: // fixext 1
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case 0xd5: // fixext 2
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case 0xd6: // fixext 4
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case 0xd7: // fixext 8
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again_fixed_trail_if_zero(ACS_EXT_VALUE,
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(1 << (((unsigned int)*p) & 0x03))+1,
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_ext_zero);
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case 0xd8: // fixext 16
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again_fixed_trail_if_zero(ACS_EXT_VALUE, 16+1, _ext_zero);
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case 0xd9: // str 8
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again_fixed_trail(NEXT_CS(p), 1);
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case 0xda: // raw 16
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case 0xdb: // raw 32
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case 0xdc: // array 16
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case 0xdd: // array 32
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case 0xde: // map 16
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case 0xdf: // map 32
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again_fixed_trail(NEXT_CS(p), 2 << (((unsigned int)*p) & 0x01));
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default:
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goto _failed;
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}
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SWITCH_RANGE(0xa0, 0xbf) // FixRaw
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again_fixed_trail_if_zero(ACS_RAW_VALUE, ((unsigned int)*p & 0x1f), _raw_zero);
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SWITCH_RANGE(0x90, 0x9f) // FixArray
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start_container(_array, ((unsigned int)*p) & 0x0f, CT_ARRAY_ITEM);
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SWITCH_RANGE(0x80, 0x8f) // FixMap
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start_container(_map, ((unsigned int)*p) & 0x0f, CT_MAP_KEY);
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SWITCH_RANGE_DEFAULT
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goto _failed;
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SWITCH_RANGE_END
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// end CS_HEADER
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_fixed_trail_again:
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++p;
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default:
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if((size_t)(pe - p) < trail) { goto _out; }
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n = p; p += trail - 1;
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switch(cs) {
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case CS_EXT_8:
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again_fixed_trail_if_zero(ACS_EXT_VALUE, *(uint8_t*)n+1, _ext_zero);
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case CS_EXT_16:
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again_fixed_trail_if_zero(ACS_EXT_VALUE,
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_msgpack_load16(uint16_t,n)+1,
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_ext_zero);
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case CS_EXT_32:
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again_fixed_trail_if_zero(ACS_EXT_VALUE,
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_msgpack_load32(uint32_t,n)+1,
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_ext_zero);
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case CS_FLOAT: {
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union { uint32_t i; float f; } mem;
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mem.i = _msgpack_load32(uint32_t,n);
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push_fixed_value(_float, mem.f); }
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case CS_DOUBLE: {
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union { uint64_t i; double f; } mem;
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mem.i = _msgpack_load64(uint64_t,n);
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#if defined(__arm__) && !(__ARM_EABI__) // arm-oabi
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// https://github.com/msgpack/msgpack-perl/pull/1
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mem.i = (mem.i & 0xFFFFFFFFUL) << 32UL | (mem.i >> 32UL);
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#endif
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push_fixed_value(_double, mem.f); }
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case CS_UINT_8:
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push_fixed_value(_uint8, *(uint8_t*)n);
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case CS_UINT_16:
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push_fixed_value(_uint16, _msgpack_load16(uint16_t,n));
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case CS_UINT_32:
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push_fixed_value(_uint32, _msgpack_load32(uint32_t,n));
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case CS_UINT_64:
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push_fixed_value(_uint64, _msgpack_load64(uint64_t,n));
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case CS_INT_8:
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push_fixed_value(_int8, *(int8_t*)n);
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case CS_INT_16:
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push_fixed_value(_int16, _msgpack_load16(int16_t,n));
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case CS_INT_32:
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push_fixed_value(_int32, _msgpack_load32(int32_t,n));
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case CS_INT_64:
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push_fixed_value(_int64, _msgpack_load64(int64_t,n));
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case CS_BIN_8:
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again_fixed_trail_if_zero(ACS_BIN_VALUE, *(uint8_t*)n, _bin_zero);
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case CS_BIN_16:
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again_fixed_trail_if_zero(ACS_BIN_VALUE, _msgpack_load16(uint16_t,n), _bin_zero);
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case CS_BIN_32:
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again_fixed_trail_if_zero(ACS_BIN_VALUE, _msgpack_load32(uint32_t,n), _bin_zero);
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case ACS_BIN_VALUE:
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_bin_zero:
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push_variable_value(_bin, data, n, trail);
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case CS_RAW_8:
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again_fixed_trail_if_zero(ACS_RAW_VALUE, *(uint8_t*)n, _raw_zero);
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case CS_RAW_16:
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again_fixed_trail_if_zero(ACS_RAW_VALUE, _msgpack_load16(uint16_t,n), _raw_zero);
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case CS_RAW_32:
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again_fixed_trail_if_zero(ACS_RAW_VALUE, _msgpack_load32(uint32_t,n), _raw_zero);
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case ACS_RAW_VALUE:
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_raw_zero:
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push_variable_value(_raw, data, n, trail);
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case ACS_EXT_VALUE:
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_ext_zero:
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push_variable_value(_ext, data, n, trail);
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case CS_ARRAY_16:
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start_container(_array, _msgpack_load16(uint16_t,n), CT_ARRAY_ITEM);
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case CS_ARRAY_32:
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/* FIXME security guard */
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start_container(_array, _msgpack_load32(uint32_t,n), CT_ARRAY_ITEM);
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case CS_MAP_16:
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start_container(_map, _msgpack_load16(uint16_t,n), CT_MAP_KEY);
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case CS_MAP_32:
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/* FIXME security guard */
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start_container(_map, _msgpack_load32(uint32_t,n), CT_MAP_KEY);
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default:
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goto _failed;
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}
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}
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_push:
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if(top == 0) { goto _finish; }
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c = &stack[top-1];
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switch(c->ct) {
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case CT_ARRAY_ITEM:
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if(construct_cb(_array_item)(user, c->count, &c->obj, obj) < 0) { goto _failed; }
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if(++c->count == c->size) {
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obj = c->obj;
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if (construct_cb(_array_end)(user, &obj) < 0) { goto _failed; }
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--top;
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|
|
/*printf("stack pop %d\n", top);*/
|
||
|
|
goto _push;
|
||
|
|
}
|
||
|
|
goto _header_again;
|
||
|
|
case CT_MAP_KEY:
|
||
|
|
c->map_key = obj;
|
||
|
|
c->ct = CT_MAP_VALUE;
|
||
|
|
goto _header_again;
|
||
|
|
case CT_MAP_VALUE:
|
||
|
|
if(construct_cb(_map_item)(user, c->count, &c->obj, c->map_key, obj) < 0) { goto _failed; }
|
||
|
|
if(++c->count == c->size) {
|
||
|
|
obj = c->obj;
|
||
|
|
if (construct_cb(_map_end)(user, &obj) < 0) { goto _failed; }
|
||
|
|
--top;
|
||
|
|
/*printf("stack pop %d\n", top);*/
|
||
|
|
goto _push;
|
||
|
|
}
|
||
|
|
c->ct = CT_MAP_KEY;
|
||
|
|
goto _header_again;
|
||
|
|
|
||
|
|
default:
|
||
|
|
goto _failed;
|
||
|
|
}
|
||
|
|
|
||
|
|
_header_again:
|
||
|
|
cs = CS_HEADER;
|
||
|
|
++p;
|
||
|
|
} while(p != pe);
|
||
|
|
goto _out;
|
||
|
|
|
||
|
|
|
||
|
|
_finish:
|
||
|
|
if (!construct)
|
||
|
|
unpack_callback_nil(user, &obj);
|
||
|
|
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 = p - (const unsigned char*)data;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
#undef construct_cb
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef SWITCH_RANGE_BEGIN
|
||
|
|
#undef SWITCH_RANGE
|
||
|
|
#undef SWITCH_RANGE_DEFAULT
|
||
|
|
#undef SWITCH_RANGE_END
|
||
|
|
#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
|
||
|
|
|
||
|
|
template <unsigned int fixed_offset, unsigned int var_offset>
|
||
|
|
static inline int unpack_container_header(unpack_context* ctx, const char* data, size_t len, size_t* off)
|
||
|
|
{
|
||
|
|
assert(len >= *off);
|
||
|
|
uint32_t size;
|
||
|
|
const unsigned char *const p = (unsigned char*)data + *off;
|
||
|
|
|
||
|
|
#define inc_offset(inc) \
|
||
|
|
if (len - *off < inc) \
|
||
|
|
return 0; \
|
||
|
|
*off += inc;
|
||
|
|
|
||
|
|
switch (*p) {
|
||
|
|
case var_offset:
|
||
|
|
inc_offset(3);
|
||
|
|
size = _msgpack_load16(uint16_t, p + 1);
|
||
|
|
break;
|
||
|
|
case var_offset + 1:
|
||
|
|
inc_offset(5);
|
||
|
|
size = _msgpack_load32(uint32_t, p + 1);
|
||
|
|
break;
|
||
|
|
#ifdef USE_CASE_RANGE
|
||
|
|
case fixed_offset + 0x0 ... fixed_offset + 0xf:
|
||
|
|
#else
|
||
|
|
case fixed_offset + 0x0:
|
||
|
|
case fixed_offset + 0x1:
|
||
|
|
case fixed_offset + 0x2:
|
||
|
|
case fixed_offset + 0x3:
|
||
|
|
case fixed_offset + 0x4:
|
||
|
|
case fixed_offset + 0x5:
|
||
|
|
case fixed_offset + 0x6:
|
||
|
|
case fixed_offset + 0x7:
|
||
|
|
case fixed_offset + 0x8:
|
||
|
|
case fixed_offset + 0x9:
|
||
|
|
case fixed_offset + 0xa:
|
||
|
|
case fixed_offset + 0xb:
|
||
|
|
case fixed_offset + 0xc:
|
||
|
|
case fixed_offset + 0xd:
|
||
|
|
case fixed_offset + 0xe:
|
||
|
|
case fixed_offset + 0xf:
|
||
|
|
#endif
|
||
|
|
++*off;
|
||
|
|
size = ((unsigned int)*p) & 0x0f;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
PyErr_SetString(PyExc_ValueError, "Unexpected type header on stream");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
unpack_callback_uint32(&ctx->user, size, &ctx->stack[0].obj);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef SWITCH_RANGE_BEGIN
|
||
|
|
#undef SWITCH_RANGE
|
||
|
|
#undef SWITCH_RANGE_DEFAULT
|
||
|
|
#undef SWITCH_RANGE_END
|
||
|
|
|
||
|
|
static const execute_fn unpack_construct = &unpack_execute<true>;
|
||
|
|
static const execute_fn unpack_skip = &unpack_execute<false>;
|
||
|
|
static const execute_fn read_array_header = &unpack_container_header<0x90, 0xdc>;
|
||
|
|
static const execute_fn read_map_header = &unpack_container_header<0x80, 0xde>;
|
||
|
|
|
||
|
|
#undef NEXT_CS
|
||
|
|
|
||
|
|
/* vim: set ts=4 sw=4 sts=4 expandtab */
|