51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
// 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 <stddef.h>
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#include <stdint.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_PRIVATE(_upb_WireReader_LongVarint)
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UPB_PRIVATE(_upb_WireReader_ReadLongVarint)(const char* ptr, uint64_t val) {
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UPB_PRIVATE(_upb_WireReader_LongVarint) 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_PRIVATE(_upb_WireReader_SkipGroup)(
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const char* ptr, uint32_t tag, 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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