1//===--- NarrowingConversionsCheck.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_BUGPRONE_NARROWING_CONVERSIONS_H
10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_NARROWING_CONVERSIONS_H
11
12#include "../ClangTidyCheck.h"
13
14namespace clang::tidy::bugprone {
15
16/// Checks for narrowing conversions, e.g:
17/// int i = 0;
18/// i += 0.1;
19///
20/// For the user-facing documentation see:
21/// http://clang.llvm.org/extra/clang-tidy/checks/bugprone/narrowing-conversions.html
22class NarrowingConversionsCheck : public ClangTidyCheck {
23public:
24 NarrowingConversionsCheck(StringRef Name, ClangTidyContext *Context);
25
26 void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
27
28 void registerMatchers(ast_matchers::MatchFinder *Finder) override;
29 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
30
31private:
32 void diagNarrowType(SourceLocation SourceLoc, const Expr &Lhs,
33 const Expr &Rhs);
34
35 void diagNarrowTypeToSignedInt(SourceLocation SourceLoc, const Expr &Lhs,
36 const Expr &Rhs);
37
38 void diagNarrowIntegerConstant(SourceLocation SourceLoc, const Expr &Lhs,
39 const Expr &Rhs, const llvm::APSInt &Value);
40
41 void diagNarrowIntegerConstantToSignedInt(SourceLocation SourceLoc,
42 const Expr &Lhs, const Expr &Rhs,
43 const llvm::APSInt &Value,
44 const uint64_t HexBits);
45
46 void diagNarrowConstant(SourceLocation SourceLoc, const Expr &Lhs,
47 const Expr &Rhs);
48
49 void diagConstantCast(SourceLocation SourceLoc, const Expr &Lhs,
50 const Expr &Rhs);
51
52 void diagNarrowTypeOrConstant(const ASTContext &Context,
53 SourceLocation SourceLoc, const Expr &Lhs,
54 const Expr &Rhs);
55
56 void handleIntegralCast(const ASTContext &Context, SourceLocation SourceLoc,
57 const Expr &Lhs, const Expr &Rhs);
58
59 void handleIntegralToBoolean(const ASTContext &Context,
60 SourceLocation SourceLoc, const Expr &Lhs,
61 const Expr &Rhs);
62
63 void handleIntegralToFloating(const ASTContext &Context,
64 SourceLocation SourceLoc, const Expr &Lhs,
65 const Expr &Rhs);
66
67 void handleFloatingToIntegral(const ASTContext &Context,
68 SourceLocation SourceLoc, const Expr &Lhs,
69 const Expr &Rhs);
70
71 void handleFloatingToBoolean(const ASTContext &Context,
72 SourceLocation SourceLoc, const Expr &Lhs,
73 const Expr &Rhs);
74
75 void handleBooleanToSignedIntegral(const ASTContext &Context,
76 SourceLocation SourceLoc, const Expr &Lhs,
77 const Expr &Rhs);
78
79 void handleFloatingCast(const ASTContext &Context, SourceLocation SourceLoc,
80 const Expr &Lhs, const Expr &Rhs);
81
82 void handleBinaryOperator(const ASTContext &Context, SourceLocation SourceLoc,
83 const Expr &Lhs, const Expr &Rhs);
84
85 bool handleConditionalOperator(const ASTContext &Context, const Expr &Lhs,
86 const Expr &Rhs);
87
88 void handleImplicitCast(const ASTContext &Context,
89 const ImplicitCastExpr &Cast);
90
91 void handleBinaryOperator(const ASTContext &Context,
92 const BinaryOperator &Op);
93
94 bool isWarningInhibitedByEquivalentSize(const ASTContext &Context,
95 const BuiltinType &FromType,
96 const BuiltinType &ToType) const;
97
98 const bool WarnOnIntegerNarrowingConversion;
99 const bool WarnOnIntegerToFloatingPointNarrowingConversion;
100 const bool WarnOnFloatingPointNarrowingConversion;
101 const bool WarnWithinTemplateInstantiation;
102 const bool WarnOnEquivalentBitWidth;
103 const StringRef IgnoreConversionFromTypes;
104 const bool PedanticMode;
105};
106
107} // namespace clang::tidy::bugprone
108
109#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_NARROWING_CONVERSIONS_H
110

source code of clang-tools-extra/clang-tidy/bugprone/NarrowingConversionsCheck.h