| //===--- TooSmallLoopVariableCheck.h - clang-tidy ---------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_TOOSMALLLOOPVARIABLECHECK_H |
| #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_TOOSMALLLOOPVARIABLECHECK_H |
| |
| #include "../ClangTidyCheck.h" |
| |
| namespace clang { |
| namespace tidy { |
| namespace bugprone { |
| |
| /// This check gives a warning if a loop variable has a too small type which |
| /// might not be able to represent all values which are part of the whole range |
| /// in which the loop iterates. |
| /// If the loop variable's type is too small we might end up in an infinite |
| /// loop. Example: |
| /// \code |
| /// long size = 294967296l; |
| /// for (short i = 0; i < size; ++i) {} { ... } |
| /// \endcode |
| /// |
| /// For the user-facing documentation see: |
| /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-too-small-loop-variable.html |
| class TooSmallLoopVariableCheck : public ClangTidyCheck { |
| public: |
| TooSmallLoopVariableCheck(StringRef Name, ClangTidyContext *Context); |
| |
| void storeOptions(ClangTidyOptions::OptionMap &Opts) override; |
| void registerMatchers(ast_matchers::MatchFinder *Finder) override; |
| void check(const ast_matchers::MatchFinder::MatchResult &Result) override; |
| |
| private: |
| const unsigned MagnitudeBitsUpperLimit; |
| }; |
| |
| } // namespace bugprone |
| } // namespace tidy |
| } // namespace clang |
| |
| #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_TOOSMALLLOOPVARIABLECHECK_H |