Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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47 lines
1.4 KiB
47 lines
1.4 KiB
// Protocol Buffers - Google's data interchange format |
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// Copyright 2023 Google LLC. All rights reserved. |
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// |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file or at |
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// https://developers.google.com/open-source/licenses/bsd |
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#include "upb/wire/reader.h" |
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#include "upb/wire/eps_copy_input_stream.h" |
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#include "upb/wire/types.h" |
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// Must be last. |
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#include "upb/port/def.inc" |
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UPB_NOINLINE _upb_WireReader_ReadLongVarintRet |
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_upb_WireReader_ReadLongVarint(const char* ptr, uint64_t val) { |
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_upb_WireReader_ReadLongVarintRet ret = {NULL, 0}; |
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uint64_t byte; |
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int i; |
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for (i = 1; i < 10; i++) { |
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byte = (uint8_t)ptr[i]; |
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val += (byte - 1) << (i * 7); |
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if (!(byte & 0x80)) { |
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ret.ptr = ptr + i + 1; |
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ret.val = val; |
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return ret; |
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} |
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} |
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return ret; |
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} |
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const char* _upb_WireReader_SkipGroup(const char* ptr, uint32_t tag, |
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int depth_limit, |
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upb_EpsCopyInputStream* stream) { |
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if (--depth_limit == 0) return NULL; |
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uint32_t end_group_tag = (tag & ~7ULL) | kUpb_WireType_EndGroup; |
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while (!upb_EpsCopyInputStream_IsDone(stream, &ptr)) { |
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uint32_t tag; |
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ptr = upb_WireReader_ReadTag(ptr, &tag); |
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if (!ptr) return NULL; |
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if (tag == end_group_tag) return ptr; |
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ptr = _upb_WireReader_SkipValue(ptr, tag, depth_limit, stream); |
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if (!ptr) return NULL; |
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} |
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return ptr; |
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}
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