Symbol

#include <tpau-cpp-kernal/Symbol.h>

INCLUDE FILE

#include <tpau-cpp-kernal/Symbol.h>

class Symbol

A Symbol represents a string in a way that allows copying and comparison in constant time.

Even though it uses the global symbol table and C++ does not guarantee the order of initialization of global variables, it is safe to use the Symbol constructor in global initializers.

DEFINITION

            class Symbol;
        

constructor Symbol

Create an empty symbol.

DEFINITION

Symbol

(

);

constructor Symbol

Create a symbol from a string.

DEFINITION

Symbol

(

const char * name

);

PARAMETER	DESCRIPTION
`name`	The string to create the symbol from.

constructor Symbol

Create a symbol from a string.

DEFINITION

Symbol

(

const std::string & name

);

PARAMETER	DESCRIPTION
`name`	The string to create the symbol from.

constructor Symbol

Create a symbol from a string view.

DEFINITION

Symbol

(

std::string_view name

);

PARAMETER	DESCRIPTION
`name`	The string to create the symbol from.

method emptyconst

Check if the symbol is empty, i. e. it represents the empty string.

DEFINITION

bool empty

(

) const;

RETURNS	DESCRIPTION
`bool`	`true` if the symbol is empty, `false` otherwise.

method operator boolconst

Check if the symbol is valid (not empty).

DEFINITION

operator bool

(

) const;

method operator!=const

Check if two symbols are not equal.

DEFINITION

bool operator!=

(

const Symbol & other

) const;

PARAMETER	DESCRIPTION
`other`	The symbol to compare with.

RETURNS	DESCRIPTION
`bool`	`true` if the symbols are not equal, `false` otherwise.

method operator<const

Check if this symbol comes before another symbol in lexicographical order.

DEFINITION

bool operator<

(

const Symbol & other

) const;

PARAMETER	DESCRIPTION
`other`	The symbol to compare with.

RETURNS	DESCRIPTION
`bool`	`true` if this symbol comes before the other symbol, `false` otherwise.

method operator<=const

Check if this symbol comes before or is equal to another symbol in lexicographical order.

DEFINITION

bool operator<=

(

const Symbol & other

) const;

PARAMETER	DESCRIPTION
`other`	The symbol to compare with.

RETURNS	DESCRIPTION
`bool`	`true` if this symbol comes before or is equal to the other symbol, `false` otherwise.

method operator=

Assign the symbol corresponding to a string.

DEFINITION

Symbol & operator=

(

const char * name

);

PARAMETER	DESCRIPTION
`name`	The string to create the symbol from.

RETURNS	DESCRIPTION
`Symbol &`	The created symbol.

method operator=

Assign the symbol corresponding to a string.

DEFINITION

Symbol & operator=

(

const std::string & name

);

PARAMETER	DESCRIPTION
`name`	The string to create the symbol from.

RETURNS	DESCRIPTION
`Symbol &`	The created symbol.

method operator=

Assign the symbol corresponding to a string view.

DEFINITION

Symbol & operator=

(

std::string_view name

);

PARAMETER	DESCRIPTION
`name`	The string to create the symbol from.

RETURNS	DESCRIPTION
`Symbol &`	The created symbol.

method operator==const

Check if two symbols are equal.

DEFINITION

bool operator==

(

const Symbol & other

) const;

PARAMETER	DESCRIPTION
`other`	The symbol to compare with.

RETURNS	DESCRIPTION
`bool`	`true` if the symbols are equal, `false` otherwise.

method operator>const

Check if this symbol comes after another symbol in lexicographical order.

DEFINITION

bool operator>

(

const Symbol & other

) const;

PARAMETER	DESCRIPTION
`other`	The symbol to compare with.

RETURNS	DESCRIPTION
`bool`	`true` if this symbol comes after the other symbol, `false` otherwise.

method operator>=const

Check if this symbol comes after or is equal to another symbol in lexicographical order.

DEFINITION

bool operator>=

(

const Symbol & other

) const;

PARAMETER	DESCRIPTION
`other`	The symbol to compare with.

RETURNS	DESCRIPTION
`bool`	`true` if this symbol comes after or is equal to the other symbol, `false` otherwise.

method strconst

Get the string represented by the symbol.

DEFINITION

const std::string & str

(

) const;

RETURNS	DESCRIPTION
`const std::string &`	The string represented by the symbol.

function operator<<

Output a symbol to a stream.

DEFINITION

std::ostream & operator<<	(	std::ostream & stream,
		const Symbol & symbol	);

PARAMETER	DESCRIPTION
`stream`	The stream to output to.
`symbol`	The symbol to output.

RETURNS	DESCRIPTION
`std::ostream &`	The stream that was output to.