clang-tools 17.0.0git
SymbolID.cpp
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1//===--- SymbolID.cpp --------------------------------------------*- C++-*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "SymbolID.h"
10#include "support/Logger.h"
11#include "llvm/Support/SHA1.h"
12
13namespace clang {
14namespace clangd {
15
16SymbolID::SymbolID(llvm::StringRef USR) {
17 auto Hash = llvm::SHA1::hash(llvm::arrayRefFromStringRef(USR));
18 static_assert(sizeof(Hash) >= RawSize, "RawSize larger than SHA1");
19 memcpy(HashValue.data(), Hash.data(), RawSize);
20}
21
22llvm::StringRef SymbolID::raw() const {
23 return llvm::StringRef(reinterpret_cast<const char *>(HashValue.data()),
24 RawSize);
25}
26
27SymbolID SymbolID::fromRaw(llvm::StringRef Raw) {
28 SymbolID ID;
29 assert(Raw.size() == RawSize);
30 memcpy(ID.HashValue.data(), Raw.data(), RawSize);
31 return ID;
32}
33
34std::string SymbolID::str() const { return llvm::toHex(raw()); }
35
36llvm::Expected<SymbolID> SymbolID::fromStr(llvm::StringRef Str) {
37 if (Str.size() != RawSize * 2)
38 return error("Bad ID length");
39 for (char C : Str)
40 if (!llvm::isHexDigit(C))
41 return error("Bad hex ID");
42 return fromRaw(llvm::fromHex(Str));
43}
44
45llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const SymbolID &ID) {
46 return OS << llvm::toHex(ID.raw());
47}
48
49} // namespace clangd
50} // namespace clang
const Criteria C
std::string USR
llvm::raw_string_ostream OS
Definition: TraceTests.cpp:160
static constexpr size_t RawSize
Definition: SymbolID.h:49
static llvm::Expected< SymbolID > fromStr(llvm::StringRef)
Definition: SymbolID.cpp:36
static SymbolID fromRaw(llvm::StringRef)
Definition: SymbolID.cpp:27
std::string str() const
Definition: SymbolID.cpp:34
llvm::StringRef raw() const
Definition: SymbolID.cpp:22
llvm::Error error(std::error_code EC, const char *Fmt, Ts &&... Vals)
Definition: Logger.h:79
llvm::raw_ostream & operator<<(llvm::raw_ostream &OS, const CodeCompletion &C)
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//