1 //===---------- IssueHash.h - Generate identification hashes ----*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
8 #ifndef LLVM_CLANG_STATICANALYZER_CORE_ISSUE_HASH_H
9 #define LLVM_CLANG_STATICANALYZER_CORE_ISSUE_HASH_H
11 #include "llvm/ADT/SmallString.h"
19 /// Get an MD5 hash to help identify bugs.
21 /// This function returns a hash that helps identify bugs within a source file.
22 /// This identification can be utilized to diff diagnostic results on different
23 /// snapshots of a projects, or maintain a database of suppressed diagnotics.
25 /// The hash contains the normalized text of the location associated with the
26 /// diagnostic. Normalization means removing the whitespaces. The associated
27 /// location is the either the last location of a diagnostic path or a uniqueing
28 /// location. The bugtype and the name of the checker is also part of the hash.
29 /// The last component is the string representation of the enclosing declaration
30 /// of the associated location.
32 /// In case a new hash is introduced, the old one should still be maintained for
33 /// a while. One should not introduce a new hash for every change, it is
34 /// possible to introduce experimental hashes that may change in the future.
35 /// Such hashes should be marked as experimental using a comment in the plist
37 llvm::SmallString<32> GetIssueHash(const SourceManager &SM,
38 FullSourceLoc &IssueLoc,
39 llvm::StringRef CheckerName,
40 llvm::StringRef BugType, const Decl *D,
41 const LangOptions &LangOpts);
43 /// Get the string representation of issue hash. See GetIssueHash() for
45 std::string GetIssueString(const SourceManager &SM, FullSourceLoc &IssueLoc,
46 llvm::StringRef CheckerName, llvm::StringRef BugType,
47 const Decl *D, const LangOptions &LangOpts);