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//===--- IdentifierNamingCheck.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_READABILITY_IDENTIFIERNAMINGCHECK_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_IDENTIFIERNAMINGCHECK_H
#include "../utils/RenamerClangTidyCheck.h"
#include <optional>
namespace clang::tidy {
namespace readability {
enum StyleKind : int;
/// Checks for identifiers naming style mismatch.
///
/// This check will try to enforce coding guidelines on the identifiers naming.
/// It supports `lower_case`, `UPPER_CASE`, `camelBack` and `CamelCase` casing
/// and tries to convert from one to another if a mismatch is detected.
///
/// It also supports a fixed prefix and suffix that will be prepended or
/// appended to the identifiers, regardless of the casing.
///
/// Many configuration options are available, in order to be able to create
/// different rules for different kind of identifier. In general, the
/// rules are falling back to a more generic rule if the specific case is not
/// configured.
class IdentifierNamingCheck final : public RenamerClangTidyCheck {
public:
IdentifierNamingCheck(StringRef Name, ClangTidyContext *Context);
~IdentifierNamingCheck();
void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
enum CaseType {
CT_AnyCase = 0,
CT_LowerCase,
CT_CamelBack,
CT_UpperCase,
CT_CamelCase,
CT_CamelSnakeCase,
CT_CamelSnakeBack
};
enum HungarianPrefixType {
HPT_Off = 0,
HPT_On,
HPT_LowerCase,
HPT_CamelCase,
};
struct HungarianNotationOption {
HungarianNotationOption() : HPType(HungarianPrefixType::HPT_Off) {}
std::optional<CaseType> Case;
HungarianPrefixType HPType;
llvm::StringMap<std::string> General;
llvm::StringMap<std::string> CString;
llvm::StringMap<std::string> PrimitiveType;
llvm::StringMap<std::string> UserDefinedType;
llvm::StringMap<std::string> DerivedType;
};
struct NamingStyle {
NamingStyle() = default;
NamingStyle(std::optional<CaseType> Case, const std::string &Prefix,
const std::string &Suffix, const std::string &IgnoredRegexpStr,
HungarianPrefixType HPType);
NamingStyle(const NamingStyle &O) = delete;
NamingStyle &operator=(NamingStyle &&O) = default;
NamingStyle(NamingStyle &&O) = default;
std::optional<CaseType> Case;
std::string Prefix;
std::string Suffix;
// Store both compiled and non-compiled forms so original value can be
// serialized
llvm::Regex IgnoredRegexp;
std::string IgnoredRegexpStr;
HungarianPrefixType HPType;
};
struct HungarianNotation {
public:
bool checkOptionValid(int StyleKindIndex) const;
bool isOptionEnabled(StringRef OptionKey,
const llvm::StringMap<std::string> &StrMap) const;
void loadDefaultConfig(
IdentifierNamingCheck::HungarianNotationOption &HNOption) const;
void loadFileConfig(
const ClangTidyCheck::OptionsView &Options,
IdentifierNamingCheck::HungarianNotationOption &HNOption) const;
bool removeDuplicatedPrefix(
SmallVector<StringRef, 8> &Words,
const IdentifierNamingCheck::HungarianNotationOption &HNOption) const;
std::string getPrefix(
const Decl *D,
const IdentifierNamingCheck::HungarianNotationOption &HNOption) const;
std::string getDataTypePrefix(
StringRef TypeName, const NamedDecl *ND,
const IdentifierNamingCheck::HungarianNotationOption &HNOption) const;
std::string getClassPrefix(
const CXXRecordDecl *CRD,
const IdentifierNamingCheck::HungarianNotationOption &HNOption) const;
std::string getEnumPrefix(const EnumConstantDecl *ECD) const;
std::string getDeclTypeName(const NamedDecl *ND) const;
};
struct FileStyle {
FileStyle() : IsActive(false), IgnoreMainLikeFunctions(false) {}
FileStyle(SmallVectorImpl<std::optional<NamingStyle>> &&Styles,
HungarianNotationOption HNOption, bool IgnoreMainLike)
: Styles(std::move(Styles)), HNOption(std::move(HNOption)),
IsActive(true), IgnoreMainLikeFunctions(IgnoreMainLike) {}
ArrayRef<std::optional<NamingStyle>> getStyles() const {
assert(IsActive);
return Styles;
}
const HungarianNotationOption &getHNOption() const {
assert(IsActive);
return HNOption;
}
bool isActive() const { return IsActive; }
bool isIgnoringMainLikeFunction() const { return IgnoreMainLikeFunctions; }
private:
SmallVector<std::optional<NamingStyle>, 0> Styles;
HungarianNotationOption HNOption;
bool IsActive;
bool IgnoreMainLikeFunctions;
};
IdentifierNamingCheck::FileStyle
getFileStyleFromOptions(const ClangTidyCheck::OptionsView &Options) const;
bool
matchesStyle(StringRef Type, StringRef Name,
const IdentifierNamingCheck::NamingStyle &Style,
const IdentifierNamingCheck::HungarianNotationOption &HNOption,
const NamedDecl *Decl) const;
std::string
fixupWithCase(StringRef Type, StringRef Name, const Decl *D,
const IdentifierNamingCheck::NamingStyle &Style,
const IdentifierNamingCheck::HungarianNotationOption &HNOption,
IdentifierNamingCheck::CaseType Case) const;
std::string
fixupWithStyle(StringRef Type, StringRef Name,
const IdentifierNamingCheck::NamingStyle &Style,
const IdentifierNamingCheck::HungarianNotationOption &HNOption,
const Decl *D) const;
StyleKind findStyleKind(
const NamedDecl *D,
ArrayRef<std::optional<IdentifierNamingCheck::NamingStyle>> NamingStyles,
bool IgnoreMainLikeFunctions) const;
std::optional<RenamerClangTidyCheck::FailureInfo> getFailureInfo(
StringRef Type, StringRef Name, const NamedDecl *ND,
SourceLocation Location,
ArrayRef<std::optional<IdentifierNamingCheck::NamingStyle>> NamingStyles,
const IdentifierNamingCheck::HungarianNotationOption &HNOption,
StyleKind SK, const SourceManager &SM, bool IgnoreFailedSplit) const;
bool isParamInMainLikeFunction(const ParmVarDecl &ParmDecl,
bool IncludeMainLike) const;
private:
std::optional<FailureInfo>
getDeclFailureInfo(const NamedDecl *Decl,
const SourceManager &SM) const override;
std::optional<FailureInfo>
getMacroFailureInfo(const Token &MacroNameTok,
const SourceManager &SM) const override;
DiagInfo getDiagInfo(const NamingCheckId &ID,
const NamingCheckFailure &Failure) const override;
const FileStyle &getStyleForFile(StringRef FileName) const;
/// Stores the style options as a vector, indexed by the specified \ref
/// StyleKind, for a given directory.
mutable llvm::StringMap<FileStyle> NamingStylesCache;
FileStyle *MainFileStyle;
ClangTidyContext *Context;
const StringRef CheckName;
const bool GetConfigPerFile;
const bool IgnoreFailedSplit;
HungarianNotation HungarianNotation;
};
} // namespace readability
template <>
struct OptionEnumMapping<readability::IdentifierNamingCheck::CaseType> {
static llvm::ArrayRef<
std::pair<readability::IdentifierNamingCheck::CaseType, StringRef>>
getEnumMapping();
};
} // namespace clang::tidy
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_IDENTIFIERNAMINGCHECK_H
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