PPDirectives.cpp File Reference (original) (raw)

Implements # directive processing for the Preprocessor. More...

#include "[clang/Basic/CharInfo.h](CharInfo%5F8h%5Fsource.html)"
#include "[clang/Basic/DirectoryEntry.h](DirectoryEntry%5F8h%5Fsource.html)"
#include "[clang/Basic/FileManager.h](FileManager%5F8h%5Fsource.html)"
#include "[clang/Basic/IdentifierTable.h](IdentifierTable%5F8h%5Fsource.html)"
#include "[clang/Basic/LangOptions.h](LangOptions%5F8h%5Fsource.html)"
#include "[clang/Basic/Module.h](Module%5F8h%5Fsource.html)"
#include "[clang/Basic/SourceLocation.h](SourceLocation%5F8h%5Fsource.html)"
#include "[clang/Basic/SourceManager.h](SourceManager%5F8h%5Fsource.html)"
#include "[clang/Basic/TargetInfo.h](include%5F2clang%5F2Basic%5F2TargetInfo%5F8h%5Fsource.html)"
#include "[clang/Basic/TokenKinds.h](TokenKinds%5F8h%5Fsource.html)"
#include "[clang/Lex/CodeCompletionHandler.h](CodeCompletionHandler%5F8h%5Fsource.html)"
#include "[clang/Lex/HeaderSearch.h](HeaderSearch%5F8h%5Fsource.html)"
#include "[clang/Lex/LexDiagnostic.h](LexDiagnostic%5F8h%5Fsource.html)"
#include "[clang/Lex/LiteralSupport.h](LiteralSupport%5F8h%5Fsource.html)"
#include "[clang/Lex/MacroInfo.h](MacroInfo%5F8h%5Fsource.html)"
#include "[clang/Lex/ModuleLoader.h](ModuleLoader%5F8h%5Fsource.html)"
#include "[clang/Lex/ModuleMap.h](ModuleMap%5F8h%5Fsource.html)"
#include "[clang/Lex/PPCallbacks.h](PPCallbacks%5F8h%5Fsource.html)"
#include "[clang/Lex/Pragma.h](Pragma%5F8h%5Fsource.html)"
#include "[clang/Lex/Preprocessor.h](Preprocessor%5F8h%5Fsource.html)"
#include "[clang/Lex/PreprocessorOptions.h](PreprocessorOptions%5F8h%5Fsource.html)"
#include "[clang/Lex/Token.h](Token%5F8h%5Fsource.html)"
#include "[clang/Lex/VariadicMacroSupport.h](VariadicMacroSupport%5F8h%5Fsource.html)"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/ScopeExit.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SaveAndRestore.h"
#include <algorithm>
#include <cassert>
#include <cstring>
#include <optional>
#include <string>
#include <utility>

Go to the source code of this file.

Enumerations
enum	MacroDiag { MD_NoWarn, MD_KeywordDef, MD_ReservedMacro }
	Enumerates possible cases of #define/#undef a reserved identifier. More...

enum	PPElifDiag { PED_Elif, PED_Elifdef, PED_Elifndef }
	Enumerates possible select values for the pp_err_elif_after_else and pp_err_elif_without_if diagnostics. More...

Functions
static bool	isFeatureTestMacro (StringRef MacroName)

static bool	isLanguageDefinedBuiltin (const SourceManager &SourceMgr, const MacroInfo *MI, const StringRef MacroName)

static MacroDiag	shouldWarnOnMacroDef (Preprocessor &PP, IdentifierInfo *II)

static MacroDiag	shouldWarnOnMacroUndef (Preprocessor &PP, IdentifierInfo *II)

static bool	warnByDefaultOnWrongCase (StringRef Include)

static std::optional< StringRef >	findSimilarStr (StringRef LHS, const std::vector< StringRef > &Candidates)
	Find a similar string in Candidates.

static bool	GetLineValue (Token &DigitTok, unsigned &Val, unsigned DiagID, Preprocessor &PP, bool IsGNULineDirective=false)
	GetLineValue - Convert a numeric token into an unsigned value, emitting Diagnostic DiagID if it is invalid, and returning the value in Val.

static bool	ReadLineMarkerFlags (bool &IsFileEntry, bool &IsFileExit, SrcMgr::CharacteristicKind &FileKind, Preprocessor &PP)
	ReadLineMarkerFlags - Parse and validate any flags at the end of a GNU line marker directive.

static void	diagnoseAutoModuleImport (Preprocessor &PP, SourceLocation HashLoc, Token &IncludeTok, ArrayRef< std::pair< IdentifierInfo *, SourceLocation > > Path, SourceLocation PathEnd)
	Produce a diagnostic informing the user that a #include or similar was implicitly treated as a module import.

static bool	trySimplifyPath (SmallVectorImpl< StringRef > &Components, StringRef RealPathName, llvm::sys::path::Style Separator)

static bool	isConfigurationPattern (Token &MacroName, MacroInfo *MI, const LangOptions &LOptions)

static bool	isObjCProtectedMacro (const IdentifierInfo *II)

Implements # directive processing for the Preprocessor.

Definition in file PPDirectives.cpp.

◆ MacroDiag

Enumerates possible cases of #define/#undef a reserved identifier.

Enumerator
MD_NoWarn
MD_KeywordDef
MD_ReservedMacro

Definition at line 97 of file PPDirectives.cpp.

◆ PPElifDiag

Enumerates possible select values for the pp_err_elif_after_else and pp_err_elif_without_if diagnostics.

Enumerator
PED_Elif
PED_Elifdef
PED_Elifndef

Definition at line 105 of file PPDirectives.cpp.

◆ diagnoseAutoModuleImport()

◆ findSimilarStr()

static std::optional< StringRef > findSimilarStr ( StringRef LHS, const std::vector< StringRef > & Candidates )	static

Find a similar string in Candidates.

Parameters

LHS	a string for a similar string in Candidates
Candidates	the candidates to find a similar string.

Returns

a similar string if exists. If no similar string exists, returns std::nullopt.

Definition at line 284 of file PPDirectives.cpp.

References clang::C.

◆ GetLineValue()

GetLineValue - Convert a numeric token into an unsigned value, emitting Diagnostic DiagID if it is invalid, and returning the value in Val.

Definition at line 1412 of file PPDirectives.cpp.

References clang::Preprocessor::AdvanceToTokenCharacter(), clang::Preprocessor::Diag(), clang::Preprocessor::DiscardUntilEndOfDirective(), clang::Token::getLength(), clang::Token::getLocation(), clang::Preprocessor::getSpelling(), clang::Invalid, clang::isDigit(), and clang::Token::isNot().

Referenced by ReadLineMarkerFlags().

◆ isConfigurationPattern()

◆ isFeatureTestMacro()

static bool isFeatureTestMacro ( StringRef MacroName)	static

◆ isLanguageDefinedBuiltin()

◆ isObjCProtectedMacro()

◆ ReadLineMarkerFlags()

ReadLineMarkerFlags - Parse and validate any flags at the end of a GNU line marker directive.

Definition at line 1549 of file PPDirectives.cpp.

References clang::SrcMgr::C_ExternCSystem, clang::SrcMgr::C_System, clang::Preprocessor::Diag(), clang::Preprocessor::DiscardUntilEndOfDirective(), clang::PresumedLoc::getIncludeLoc(), GetLineValue(), clang::Token::getLocation(), clang::Preprocessor::getSourceManager(), clang::Token::is(), clang::SourceLocation::isInvalid(), clang::PresumedLoc::isInvalid(), clang::Preprocessor::Lex(), and SM.

◆ shouldWarnOnMacroDef()

◆ shouldWarnOnMacroUndef()

◆ trySimplifyPath()

static bool trySimplifyPath ( SmallVectorImpl< StringRef > & Components, StringRef RealPathName, llvm::sys::path::Style Separator )	static

◆ warnByDefaultOnWrongCase()

static bool warnByDefaultOnWrongCase ( StringRef Include)	static