#include <LiteralSupport.h>

Collaboration diagram for clang::NumericLiteralParser:

Public Member Functions
	NumericLiteralParser (StringRef TokSpelling, SourceLocation TokLoc, Preprocessor &PP)
bool	isIntegerLiteral () const
bool	isFloatingLiteral () const
bool	hasUDSuffix () const
StringRef	getUDSuffix () const
unsigned	getUDSuffixOffset () const
unsigned	getRadix () const
bool	GetIntegerValue (llvm::APInt &Val)
llvm::APFloat::opStatus	GetFloatValue (llvm::APFloat &Result)
Static Public Member Functions
static bool	isValidUDSuffix (const LangOptions &LangOpts, StringRef Suffix)
Public Attributes
bool	hadError
bool	isUnsigned
bool	isLong
bool	isLongLong
bool	isFloat
bool	isImaginary
uint8_t	MicrosoftInteger

Detailed Description

NumericLiteralParser - This performs strict semantic analysis of the content of a ppnumber, classifying it as either integer, floating, or erroneous, determines the radix of the value and can convert it to a useful value.

Definition at line 42 of file LiteralSupport.h.

Constructor & Destructor Documentation

NumericLiteralParser::NumericLiteralParser	(	StringRef	TokSpelling,
		SourceLocation	TokLoc,
		Preprocessor &	PP
	)

integer-constant: [C99 6.4.4.1] decimal-constant integer-suffix octal-constant integer-suffix hexadecimal-constant integer-suffix binary-literal integer-suffix [GNU, C++1y] user-defined-integer-literal: [C++11 lex.ext] decimal-literal ud-suffix octal-literal ud-suffix hexadecimal-literal ud-suffix binary-literal ud-suffix [GNU, C++1y] decimal-constant: nonzero-digit decimal-constant digit octal-constant: 0 octal-constant octal-digit hexadecimal-constant: hexadecimal-prefix hexadecimal-digit hexadecimal-constant hexadecimal-digit hexadecimal-prefix: one of 0x 0X binary-literal: 0b binary-digit 0B binary-digit binary-literal binary-digit integer-suffix: unsigned-suffix [long-suffix] unsigned-suffix [long-long-suffix] long-suffix [unsigned-suffix] long-long-suffix [unsigned-sufix] nonzero-digit: 1 2 3 4 5 6 7 8 9 octal-digit: 0 1 2 3 4 5 6 7 hexadecimal-digit: 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F binary-digit: 0 1 unsigned-suffix: one of u U long-suffix: one of l L long-long-suffix: one of ll LL

floating-constant: [C99 6.4.4.2] TODO: add rules...

Definition at line 506 of file LiteralSupport.cpp.

References clang::Preprocessor::AdvanceToTokenCharacter(), clang::Preprocessor::Diag(), clang::expandUCNs(), clang::Preprocessor::getLangOpts(), hadError, isFloat, isFloatingLiteral(), clang::isHexDigit(), isImaginary, isLong, isLongLong, clang::isPreprocessingNumberBody(), isUnsigned, isValidUDSuffix(), and MicrosoftInteger.

Member Function Documentation

llvm::APFloat::opStatus NumericLiteralParser::GetFloatValue ( llvm::APFloat & Result )

GetFloatValue - Convert this numeric literal to a floating value, using the specified APFloat fltSemantics (specifying float, double, etc). The optional bool isExact (passed-by-reference) has its value set to true if the returned APFloat can represent the number in the literal exactly, and false otherwise.

Definition at line 968 of file LiteralSupport.cpp.

Referenced by BuildFloatingLiteral().

bool NumericLiteralParser::GetIntegerValue ( llvm::APInt & Val )

GetIntegerValue - Convert this numeric literal value to an APInt that matches Val's input width. If there is an overflow (i.e., if the unsigned value read is larger than the APInt's bits will hold), set Val to the low bits of the result and return true. Otherwise, return false.

GetIntegerValue - Convert this numeric literal value to an APInt that matches Val's input width. If there is an overflow, set Val to the low bits of the result and return true. Otherwise, return false.

Definition at line 910 of file LiteralSupport.cpp.

References alwaysFitsInto64Bits(), and AttributeLangSupport::C.

unsigned clang::NumericLiteralParser::getRadix ( ) const [inline]

Definition at line 89 of file LiteralSupport.h.

StringRef clang::NumericLiteralParser::getUDSuffix ( ) const [inline]

Definition at line 78 of file LiteralSupport.h.

unsigned clang::NumericLiteralParser::getUDSuffixOffset ( ) const [inline]

Definition at line 82 of file LiteralSupport.h.

bool clang::NumericLiteralParser::hasUDSuffix ( ) const [inline]

Definition at line 75 of file LiteralSupport.h.

bool clang::NumericLiteralParser::isFloatingLiteral ( ) const [inline]

Definition at line 71 of file LiteralSupport.h.

Referenced by NumericLiteralParser().

bool clang::NumericLiteralParser::isIntegerLiteral ( ) const [inline]

Definition at line 68 of file LiteralSupport.h.

bool NumericLiteralParser::isValidUDSuffix	(	const LangOptions &	LangOpts,
		StringRef	Suffix
	)		`[static]`

Determine whether a suffix is a valid ud-suffix. We avoid treating reserved suffixes as ud-suffixes, because the diagnostic experience is better if we treat it as an invalid suffix.

Definition at line 710 of file LiteralSupport.cpp.

Referenced by clang::Sema::CheckLiteralOperatorDeclaration(), and NumericLiteralParser().