class MCAsmLexer

Declaration

class MCAsmLexer { /* full declaration omitted */ };

Description

Generic assembler lexer interface, for use by target specific assembly lexers.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:37

Member Variables

private SmallVector<llvm::AsmToken, 1> CurTok
The current token, stored in the base class for faster access.
private llvm::SMLoc ErrLoc
The location and description of the current error
private std::string Err
protected const char* TokStart = nullptr
protected bool SkipSpace = true
protected bool AllowAtInIdentifier
protected bool AllowHashInIdentifier = false
protected bool IsAtStartOfStatement = true
protected bool LexMasmHexFloats = false
protected bool LexMasmIntegers = false
protected bool LexMasmStrings = false
protected bool LexMotorolaIntegers = false
protected bool UseMasmDefaultRadix = false
protected unsigned int DefaultRadix = 10
protected bool LexHLASMIntegers = false
protected bool LexHLASMStrings = false
protected llvm::AsmCommentConsumer* CommentConsumer = nullptr

Method Overview

Methods

const llvm::AsmToken& Lex()

Description

Consume the next token from the input stream and return it. The lexer will continuously return the end-of-file token once the end of the main input file has been reached.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:79

virtual llvm::AsmToken LexToken()

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:63

virtual llvm::StringRef LexUntilEndOfStatement()

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:100

MCAsmLexer(const llvm::MCAsmLexer&)

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:71

Parameters

const llvm::MCAsmLexer& 

MCAsmLexer()

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:61

void SetError(llvm::SMLoc errLoc,
              const std::string& err)

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:65

Parameters

llvm::SMLoc errLoc
const std::string& err

void UnLex(const llvm::AsmToken& Token)

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:93

Parameters

const llvm::AsmToken& Token

bool getAllowAtInIdentifier()

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:149

const std::string& getErr()

Description

Get the current error string

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:133

llvm::SMLoc getErrLoc()

Description

Get the current error location

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:128

AsmToken::TokenKind getKind() const

Description

Get the kind of current token.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:138

llvm::SMLoc getLoc() const

Description

Get the current source location.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:103

unsigned int getMasmDefaultRadix() const

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:166

const llvm::AsmToken& getTok() const

Description

Get the current (last) lexed token.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:106

bool is(AsmToken::TokenKind K) const

Description

Check if the current token has kind \p K.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:141

Parameters

AsmToken::TokenKind K

bool isAtStartOfStatement()

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:98

bool isNot(AsmToken::TokenKind K) const

Description

Check if the current token has kind \p K.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:144

Parameters

AsmToken::TokenKind K

const llvm::AsmToken peekTok(
    bool ShouldSkipSpace = true)

Description

Look ahead at the next token to be lexed.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:111

Parameters

bool ShouldSkipSpace = true

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

Description

Look ahead an arbitrary number of tokens.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:124

Parameters

MutableArrayRef<llvm::AsmToken> Buf
bool ShouldSkipSpace = true

void setAllowAtInIdentifier(bool v)

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:150

Parameters

bool v

void setAllowHashInIdentifier(bool V)

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:152

Parameters

bool V

void setCommentConsumer(
    llvm::AsmCommentConsumer* CommentConsumer)

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:154

Parameters

llvm::AsmCommentConsumer* CommentConsumer

void setLexHLASMIntegers(bool V)

Description

Set whether to lex HLASM-flavour integers. For now this is only [0-9]*

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:181

Parameters

bool V

void setLexHLASMStrings(bool V)

Description

Set whether to "lex" HLASM-flavour character and string literals. For now, setting this option to true, will disable lexing for character and string literals.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:186

Parameters

bool V

void setLexMasmHexFloats(bool V)

Description

Set whether to lex masm-style hex float literals, such as 3f800000r.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:170

Parameters

bool V

void setLexMasmIntegers(bool V)

Description

Set whether to lex masm-style binary (e.g., 0b1101) and radix-specified literals (e.g., 0ABCh [hex], 576t [decimal], 77o [octal], 1101y [binary]).

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:160

Parameters

bool V

void setLexMasmStrings(bool V)

Description

Set whether to lex masm-style string literals, such as 'Can''t find file' and "This ""value"" not found".

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:174

Parameters

bool V

void setLexMotorolaIntegers(bool V)

Description

Set whether to lex Motorola-style integer literals, such as $deadbeef or %01010110.

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:178

Parameters

bool V

void setMasmDefaultRadix(unsigned int Radix)

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:167

Parameters

unsigned int Radix

void setSkipSpace(bool val)

Description

Set whether spaces should be ignored by the lexer

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:147

Parameters

bool val

void useMasmDefaultRadix(bool V)

Description

Set whether to use masm-style default-radix integer literals. If disabled, assume decimal unless prefixed (e.g., 0x2c [hex], 077 [octal]).

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:164

Parameters

bool V

virtual ~MCAsmLexer()

Declared at: llvm/include/llvm/MC/MCParser/MCAsmLexer.h:73