1 //===--- LimitedRandomnessCheck.h - clang-tidy-------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CERT_LIMITED_RANDOMNESS_H
11 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CERT_LIMITED_RANDOMNESS_H
12 
13 #include "../ClangTidy.h"
14 
15 namespace clang {
16 namespace tidy {
17 namespace cert {
18 
19 /// Pseudorandom number generators are not genuinely random. The result of the
20 /// std::rand() function makes no guarantees as to the quality of the random
21 /// sequence produced.
22 /// This check warns for the usage of std::rand() function.
23 ///
24 /// For the user-facing documentation see:
25 /// http://clang.llvm.org/extra/clang-tidy/checks/cert-msc50-cpp.html
26 class LimitedRandomnessCheck : public ClangTidyCheck {
27 public:
LimitedRandomnessCheck(StringRef Name,ClangTidyContext * Context)28   LimitedRandomnessCheck(StringRef Name, ClangTidyContext *Context)
29       : ClangTidyCheck(Name, Context) {}
30   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
31   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
32 };
33 
34 } // namespace cert
35 } // namespace tidy
36 } // namespace clang
37 
38 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CERT_LIMITED_RANDOMNESS_H
39