psy::C::SyntaxLexeme Class Reference

The SyntaxLexeme class. More...

#include <SyntaxLexeme.h>

Inheritance diagram for psy::C::SyntaxLexeme:

Classes
struct	BitFields

Public Types
enum	Kind : std::uint16_t {   UNSPECIFIED = 0, Identifier, IntegerConstant, FloatingConstant,   CharacterConstant, ImaginaryIntegerConstant, ImaginaryFloatingConstant, StringLiteral }
	The SyntaxLexeme::Kind enumeraiton.
Public Types inherited from psy::TextElement
typedef const char *	iterator
typedef iterator	const_iterator

Public Member Functions
Kind	kind () const
std::string	valueText () const
template<class ValueT >
ValueT	value () const
template<>
int	value () const
template<>
long	value () const
template<>
long long	value () const
template<>
unsigned long	value () const
template<>
unsigned long long	value () const
template<>
float	value () const
template<>
double	value () const
template<>
long double	value () const
template<>
unsigned char	value () const
template<>
wchar_t	value () const
template<>
char16_t	value () const
template<>
char32_t	value () const
virtual Identifier *	asIdentifier ()
virtual IntegerConstant *	asIntegerConstant ()
virtual FloatingConstant *	asFloatingConstant ()
virtual CharacterConstant *	asCharacterConstant ()
virtual ImaginaryIntegerConstant *	asImaginaryIntegerConstant ()
virtual ImaginaryFloatingConstant *	asImaginaryFloatingConstant ()
virtual StringLiteral *	asStringLiteralExpression ()
Public Member Functions inherited from psy::TextElement
	TextElement (const char *c_str, unsigned int size)
	TextElement (const TextElement &other)=delete
void	operator= (const TextElement &other)=delete
iterator	begin () const
iterator	end () const
char	at (unsigned int idx) const
const char *	c_str () const
unsigned int	size () const
unsigned int	length () const

Protected Member Functions
	SyntaxLexeme (const char *chars, unsigned int size, Kind kind)
	SyntaxLexeme (const SyntaxLexeme &)=delete
SyntaxLexeme &	operator= (const SyntaxLexeme &)=delete
void	checkHexPrefix ()
void	checkVariousPrefixesAndSuffixes ()

Protected Attributes
union {
std::uint16_t   BF_all_
BitFields   BF_
};

Detailed Description

The SyntaxLexeme class.

Member Function Documentation

asCharacterConstant()

virtual CharacterConstant* psy::C::SyntaxLexeme::asCharacterConstant ( )

inlinevirtual

Cast this SyntaxLexeme.

Reimplemented in psy::C::CharacterConstant.

asFloatingConstant()

virtual FloatingConstant* psy::C::SyntaxLexeme::asFloatingConstant ( )

inlinevirtual

Cast this SyntaxLexeme.

Reimplemented in psy::C::FloatingConstant.

asIdentifier()

virtual Identifier* psy::C::SyntaxLexeme::asIdentifier ( )

inlinevirtual

Cast this SyntaxLexeme.

Reimplemented in psy::C::Identifier.

asImaginaryFloatingConstant()

virtual ImaginaryFloatingConstant* psy::C::SyntaxLexeme::asImaginaryFloatingConstant ( )

inlinevirtual

Cast this SyntaxLexeme.

Reimplemented in psy::C::ImaginaryFloatingConstant.

asImaginaryIntegerConstant()

virtual ImaginaryIntegerConstant* psy::C::SyntaxLexeme::asImaginaryIntegerConstant ( )

inlinevirtual

Cast this SyntaxLexeme.

Reimplemented in psy::C::ImaginaryIntegerConstant.

asIntegerConstant()

virtual IntegerConstant* psy::C::SyntaxLexeme::asIntegerConstant ( )

inlinevirtual

Cast this SyntaxLexeme.

Reimplemented in psy::C::IntegerConstant.

asStringLiteralExpression()

virtual StringLiteral* psy::C::SyntaxLexeme::asStringLiteralExpression ( )

inlinevirtual

Cast this SyntaxLexeme.

Reimplemented in psy::C::StringLiteral.

kind()

SyntaxLexeme::Kind SyntaxLexeme::kind

(

)

const

The Kind of this SyntaxLexeme.

value()

template<class ValueT >

ValueT psy::C::SyntaxLexeme::value

(

)

const

The value of this SyntaxLexeme. Template parameter ValueT must be substituted, as an argument, by the C type corresponding to the lexeme in question. Therefore, prior to calling SyntaxLexeme::value, one must check the speficic kind of a lexeme, and any variant it might have. Consider the snippet below, which stores in i the C value of 42UL of a given SyntaxLexeme, named lexeme.

if (lexeme->asIntegerConstant()) {
    auto intLexeme = lexeme->asIntegerConstant();
    if (intLexeme->signedness() == IntegerConstant::Signedness::Unsigned
            && intLexeme->variant() == IntegerConstant::Variant::Long) {
        auto i = intLexeme->value<unsigned long>();
        // ...
    }
}

Remarks

6.2.5

6.4

valueText()

std::string SyntaxLexeme::valueText

(

)

const

The value of this SyntaxLexeme represented as text, by an std::string.

Note

The return of this method is the same as that of SyntaxToken::valueText, for the SyntaxToken from which this SyntaxLexeme was obtained.

See also

SyntaxToken::valueText

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

• C/syntax/SyntaxLexeme.h
• C/syntax/SyntaxLexeme.cpp