1 //===--- NoMallocCheck.h - clang-tidy----------------------------*- 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 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_NO_MALLOC_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_NO_MALLOC_H
11 
12 #include "../ClangTidy.h"
13 #include "clang/AST/ASTContext.h"
14 #include "clang/ASTMatchers/ASTMatchFinder.h"
15 
16 namespace clang {
17 namespace tidy {
18 namespace cppcoreguidelines {
19 
20 /// This checker is concerned with C-style memory management and suggest modern
21 /// alternatives to it.
22 /// The check is only enabled in C++. For analyzing malloc calls see Clang
23 /// Static Analyzer - unix.Malloc.
24 ///
25 /// For the user-facing documentation see:
26 /// http://clang.llvm.org/extra/clang-tidy/checks/cppcoreguidelines-no-malloc.html
27 class NoMallocCheck : public ClangTidyCheck {
28 public:
29   /// Construct Checker and read in configuration for function names.
30   NoMallocCheck(StringRef Name, ClangTidyContext *Context)
31       : ClangTidyCheck(Name, Context),
32         AllocList(Options.get("Allocations", "::malloc;::calloc")),
33         ReallocList(Options.get("Reallocations", "::realloc")),
34         DeallocList(Options.get("Deallocations", "::free")) {}
35 
36   /// Make configuration of checker discoverable.
37   void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
38 
39   /// Registering for malloc, calloc, realloc and free calls.
40   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
41 
42   /// Checks matched function calls and gives suggestion to modernize the code.
43   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
44 
45 private:
46   /// Semicolon-separated list of fully qualified names of memory allocation
47   /// functions the check warns about. Defaults to `::malloc;::calloc`.
48   const std::string AllocList;
49   /// Semicolon-separated list of fully qualified names of memory reallocation
50   /// functions the check warns about. Defaults to `::realloc`.
51   const std::string ReallocList;
52   /// Semicolon-separated list of fully qualified names of memory deallocation
53   /// functions the check warns about. Defaults to `::free`.
54   const std::string DeallocList;
55 };
56 
57 } // namespace cppcoreguidelines
58 } // namespace tidy
59 } // namespace clang
60 
61 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_NO_MALLOC_H
62