#include <LiteralSupport.h>

Collaboration diagram for clang::NumericLiteralParser:

Public Member Functions
	NumericLiteralParser (const char begin, const char end, SourceLocation Loc, 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)
Public Attributes
bool	hadError
bool	isUnsigned
bool	isLong
bool	isLongLong
bool	isFloat
bool	isImaginary
bool	isMicrosoftInteger

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 38 of file LiteralSupport.h.

Constructor & Destructor Documentation

NumericLiteralParser::NumericLiteralParser	(	const char *	begin,
		const char *	end,
		SourceLocation	TokLoc,
		Preprocessor &	pp
	)

integer-constant: [C99 6.4.4.1] decimal-constant integer-suffix octal-constant integer-suffix hexadecimal-constant integer-suffix user-defined-integer-literal: [C++11 lex.ext] decimal-literal ud-suffix octal-literal ud-suffix hexadecimal-literal ud-suffix 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 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 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 388 of file LiteralSupport.cpp.

References clang::Preprocessor::AdvanceToTokenCharacter(), clang::Preprocessor::Diag(), clang::Preprocessor::getLangOpts(), hadError, isFloat, isFloatingLiteral(), isImaginary, isLong, isLongLong, isMicrosoftInteger, and isUnsigned.

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 750 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 696 of file LiteralSupport.cpp.

References HexDigitValue().

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

Definition at line 80 of file LiteralSupport.h.

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

Definition at line 71 of file LiteralSupport.h.

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

Definition at line 75 of file LiteralSupport.h.

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

Definition at line 68 of file LiteralSupport.h.

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

Definition at line 64 of file LiteralSupport.h.