Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.6 KiB
62 lines
1.6 KiB
11 months ago
|
// Protocol Buffers - Google's data interchange format
|
||
|
|
// Copyright 2023 Google LLC. All rights reserved.
|
||
|
|
//
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file or at
|
||
|
|
// https://developers.google.com/open-source/licenses/bsd
|
||
|
|
|
||
|
|
#ifndef UPB_WIRE_INTERNAL_READER_H_
|
||
|
|
#define UPB_WIRE_INTERNAL_READER_H_
|
||
|
|
|
||
|
|
// Must be last.
|
||
|
|
#include "upb/port/def.inc"
|
||
|
|
|
||
|
|
#define kUpb_WireReader_WireTypeBits 3
|
||
|
|
#define kUpb_WireReader_WireTypeMask 7
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
const char* ptr;
|
||
|
|
uint64_t val;
|
||
|
|
} UPB_PRIVATE(_upb_WireReader_LongVarint);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
UPB_PRIVATE(_upb_WireReader_LongVarint)
|
||
|
|
UPB_PRIVATE(_upb_WireReader_ReadLongVarint)(const char* ptr, uint64_t val);
|
||
|
|
|
||
|
|
static UPB_FORCEINLINE const char* UPB_PRIVATE(_upb_WireReader_ReadVarint)(
|
||
|
|
const char* ptr, uint64_t* val, int maxlen, uint64_t maxval) {
|
||
|
|
uint64_t byte = (uint8_t)*ptr;
|
||
|
|
if (UPB_LIKELY((byte & 0x80) == 0)) {
|
||
|
|
*val = (uint32_t)byte;
|
||
|
|
return ptr + 1;
|
||
|
|
}
|
||
|
|
const char* start = ptr;
|
||
|
|
UPB_PRIVATE(_upb_WireReader_LongVarint)
|
||
|
|
res = UPB_PRIVATE(_upb_WireReader_ReadLongVarint)(ptr, byte);
|
||
|
|
if (!res.ptr || (maxlen < 10 && res.ptr - start > maxlen) ||
|
||
|
|
res.val > maxval) {
|
||
|
|
return NULL; // Malformed.
|
||
|
|
}
|
||
|
|
*val = res.val;
|
||
|
|
return res.ptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
UPB_INLINE uint32_t UPB_PRIVATE(_upb_WireReader_GetFieldNumber)(uint32_t tag) {
|
||
|
|
return tag >> kUpb_WireReader_WireTypeBits;
|
||
|
|
}
|
||
|
|
|
||
|
|
UPB_INLINE uint8_t UPB_PRIVATE(_upb_WireReader_GetWireType)(uint32_t tag) {
|
||
|
|
return tag & kUpb_WireReader_WireTypeMask;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
} /* extern "C" */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "upb/port/undef.inc"
|
||
|
|
|
||
|
|
#endif // UPB_WIRE_INTERNAL_READER_H_
|