llvm::AsmLexer Class Reference

AsmLexer - Lexer class for assembly files. More...

#include "llvm/MC/MCParser/AsmLexer.h"

Inheritance diagram for llvm::AsmLexer:

Public Member Functions
	AsmLexer (const MCAsmInfo &MAI)
	AsmLexer (const AsmLexer &)=delete
AsmLexer &	operator= (const AsmLexer &)=delete
	~AsmLexer () override
void	setBuffer (StringRef Buf, const char *ptr=nullptr, bool EndStatementAtEOF=true)
StringRef	LexUntilEndOfStatement () override
size_t	peekTokens (MutableArrayRef< AsmToken > Buf, bool ShouldSkipSpace=true) override
	Look ahead an arbitrary number of tokens.
const MCAsmInfo &	getMAI () const
Public Member Functions inherited from llvm::MCAsmLexer
	MCAsmLexer (const MCAsmLexer &)=delete
MCAsmLexer &	operator= (const MCAsmLexer &)=delete
virtual	~MCAsmLexer ()
const AsmToken &	Lex ()
	Consume the next token from the input stream and return it.
void	UnLex (AsmToken const &Token)
bool	isAtStartOfStatement ()
virtual StringRef	LexUntilEndOfStatement ()=0
SMLoc	getLoc () const
	Get the current source location.
const AsmToken &	getTok () const
	Get the current (last) lexed token.
const AsmToken	peekTok (bool ShouldSkipSpace=true)
	Look ahead at the next token to be lexed.
virtual size_t	peekTokens (MutableArrayRef< AsmToken > Buf, bool ShouldSkipSpace=true)=0
	Look ahead an arbitrary number of tokens.
SMLoc	getErrLoc ()
	Get the current error location.
const std::string &	getErr ()
	Get the current error string.
AsmToken::TokenKind	getKind () const
	Get the kind of current token.
bool	is (AsmToken::TokenKind K) const
	Check if the current token has kind K.
bool	isNot (AsmToken::TokenKind K) const
	Check if the current token has kind K.
void	setSkipSpace (bool val)
	Set whether spaces should be ignored by the lexer.
bool	getAllowAtInIdentifier ()
void	setAllowAtInIdentifier (bool v)
void	setAllowHashInIdentifier (bool V)
void	setCommentConsumer (AsmCommentConsumer *CommentConsumer)
void	setLexMasmIntegers (bool V)
	Set whether to lex masm-style binary (e.g., 0b1101) and radix-specified literals (e.g., 0ABCh [hex], 576t [decimal], 77o [octal], 1101y [binary]).
void	useMasmDefaultRadix (bool V)
	Set whether to use masm-style default-radix integer literals.
unsigned	getMasmDefaultRadix () const
void	setMasmDefaultRadix (unsigned Radix)
void	setLexMasmHexFloats (bool V)
	Set whether to lex masm-style hex float literals, such as 3f800000r.
void	setLexMasmStrings (bool V)
	Set whether to lex masm-style string literals, such as 'Can''t find file' and "This ""value"" not found".
void	setLexMotorolaIntegers (bool V)
	Set whether to lex Motorola-style integer literals, such as $deadbeef or %01010110.
void	setLexHLASMIntegers (bool V)
	Set whether to lex HLASM-flavour integers. For now this is only [0-9]*.
void	setLexHLASMStrings (bool V)
	Set whether to "lex" HLASM-flavour character and string literals.

Protected Member Functions
AsmToken	LexToken () override
	LexToken - Read the next token and return its code.
Protected Member Functions inherited from llvm::MCAsmLexer
	MCAsmLexer ()
virtual AsmToken	LexToken ()=0
void	SetError (SMLoc errLoc, const std::string &err)

Additional Inherited Members
Protected Attributes inherited from llvm::MCAsmLexer
const char *	TokStart = nullptr
bool	SkipSpace = true
bool	AllowAtInIdentifier = false
bool	AllowHashInIdentifier = false
bool	IsAtStartOfStatement = true
bool	LexMasmHexFloats = false
bool	LexMasmIntegers = false
bool	LexMasmStrings = false
bool	LexMotorolaIntegers = false
bool	UseMasmDefaultRadix = false
unsigned	DefaultRadix = 10
bool	LexHLASMIntegers = false
bool	LexHLASMStrings = false
AsmCommentConsumer *	CommentConsumer = nullptr

Detailed Description

AsmLexer - Lexer class for assembly files.

Definition at line 25 of file AsmLexer.h.

Constructor & Destructor Documentation

AsmLexer() [1/2]

AsmLexer::AsmLexer

(

const MCAsmInfo &

MAI

)

Definition at line 34 of file AsmLexer.cpp.

References llvm::MCAsmLexer::AllowAtInIdentifier, llvm::MCAsmInfo::getCommentString(), llvm::MCAsmLexer::LexMotorolaIntegers, llvm::MCAsmInfo::shouldUseMotorolaIntegers(), and llvm::StringRef::starts_with().

AsmLexer() [2/2]

llvm::AsmLexer::AsmLexer ( const AsmLexer &  )

delete

~AsmLexer()

AsmLexer::~AsmLexer ( )

overridedefault

Member Function Documentation

getMAI()

const MCAsmInfo & llvm::AsmLexer::getMAI ( ) const

inline

Definition at line 53 of file AsmLexer.h.

LexToken()

AsmToken AsmLexer::LexToken ( )

overrideprotectedvirtual

LexToken - Read the next token and return its code.

Implements llvm::MCAsmLexer.

Definition at line 731 of file AsmLexer.cpp.

References llvm::AsmToken::Amp, llvm::AsmToken::AmpAmp, llvm::AsmToken::At, llvm::AsmToken::BackSlash, llvm::AsmToken::Caret, llvm::AsmToken::Colon, llvm::AsmToken::Comma, llvm::Default, llvm::MCAsmInfo::doesAllowAtAtStartOfIdentifier(), llvm::MCAsmInfo::doesAllowDollarAtStartOfIdentifier(), llvm::MCAsmInfo::doesAllowHashAtStartOfIdentifier(), llvm::MCAsmInfo::doesAllowQuestionAtStartOfIdentifier(), llvm::AsmToken::Dollar, llvm::StringRef::end(), llvm::AsmToken::EndOfStatement, llvm::AsmToken::Eof, llvm::AsmToken::Equal, llvm::AsmToken::EqualEqual, llvm::AsmToken::Exclaim, llvm::AsmToken::ExclaimEqual, llvm::MCAsmInfo::getSeparatorString(), llvm::AsmToken::Greater, llvm::AsmToken::GreaterEqual, llvm::AsmToken::GreaterGreater, llvm::AsmToken::Hash, llvm::AsmToken::HashDirective, llvm::MCAsmInfo::hasMipsExpressions(), llvm::AsmToken::Integer, llvm::MCAsmLexer::is(), isHexDigit(), llvm::AsmToken::LBrac, llvm::AsmToken::LCurly, llvm::AsmToken::Less, llvm::AsmToken::LessEqual, llvm::AsmToken::LessGreater, llvm::AsmToken::LessLess, llvm::MCAsmLexer::LexMotorolaIntegers, LexToken(), llvm::AsmToken::LParen, llvm::AsmToken::Minus, llvm::AsmToken::MinusGreater, peekTokens(), llvm::AsmToken::Percent, llvm::AsmToken::PercentCall16, llvm::AsmToken::PercentCall_Hi, llvm::AsmToken::PercentCall_Lo, llvm::AsmToken::PercentDtprel_Hi, llvm::AsmToken::PercentDtprel_Lo, llvm::AsmToken::PercentGot, llvm::AsmToken::PercentGot_Disp, llvm::AsmToken::PercentGot_Hi, llvm::AsmToken::PercentGot_Lo, llvm::AsmToken::PercentGot_Ofst, llvm::AsmToken::PercentGot_Page, llvm::AsmToken::PercentGottprel, llvm::AsmToken::PercentGp_Rel, llvm::AsmToken::PercentHi, llvm::AsmToken::PercentHigher, llvm::AsmToken::PercentHighest, llvm::AsmToken::PercentLo, llvm::AsmToken::PercentNeg, llvm::AsmToken::PercentPcrel_Hi, llvm::AsmToken::PercentPcrel_Lo, llvm::AsmToken::PercentTlsgd, llvm::AsmToken::PercentTlsldm, llvm::AsmToken::PercentTprel_Hi, llvm::AsmToken::PercentTprel_Lo, llvm::AsmToken::Pipe, llvm::AsmToken::PipePipe, llvm::AsmToken::Plus, llvm::AsmToken::Question, llvm::AsmToken::RBrac, llvm::AsmToken::RCurly, llvm::AsmToken::RParen, llvm::MCAsmInfo::shouldAllowAdditionalComments(), llvm::MCAsmLexer::SkipSpace, llvm::AsmToken::Space, llvm::AsmToken::Star, llvm::AsmToken::String, llvm::AsmToken::Tilde, llvm::MCAsmLexer::TokStart, and llvm::MCAsmLexer::UnLex().

Referenced by LexToken(), and peekTokens().

LexUntilEndOfStatement()

StringRef AsmLexer::LexUntilEndOfStatement ( )

overridevirtual

Implements llvm::MCAsmLexer.

Definition at line 665 of file AsmLexer.cpp.

References llvm::StringRef::end(), and llvm::MCAsmLexer::TokStart.

operator=()

AsmLexer & llvm::AsmLexer::operator= ( const AsmLexer &  )

delete

peekTokens()

size_t AsmLexer::peekTokens ( MutableArrayRef< AsmToken >  Buf, bool  ShouldSkipSpace = true  )

overridevirtual

Look ahead an arbitrary number of tokens.

Implements llvm::MCAsmLexer.

Definition at line 685 of file AsmLexer.cpp.

References llvm::AsmToken::Eof, llvm::MCAsmLexer::getErr(), llvm::MCAsmLexer::getErrLoc(), llvm::AsmToken::is(), LexToken(), llvm::MCAsmLexer::SetError(), llvm::ArrayRef< T >::size(), llvm::MCAsmLexer::SkipSpace, and llvm::MCAsmLexer::TokStart.

Referenced by LexToken().

setBuffer()

void AsmLexer::setBuffer	(	StringRef	Buf,
		const char *	ptr = nullptr,
		bool	EndStatementAtEOF = true
	)

Definition at line 41 of file AsmLexer.cpp.

References llvm::StringRef::begin(), and llvm::MCAsmLexer::TokStart.

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The documentation for this class was generated from the following files:

• include/llvm/MC/MCParser/AsmLexer.h
• lib/MC/MCParser/AsmLexer.cpp