Constructors / Destructors

Create or destroy expressions. More...

Functions
expression *	expression_alloc (void)
	Allocate and initialize an expression. More...
void	expression_clean (expression *e)
	Clean an expression. More...
expression *	expression_copy (const expression *e)
	Copy an expression. More...
void	expression_free (expression *e)
	Free an expression. More...
expression *	expression_from_boolean (bool boolean)
	Create an expression from a boolean. More...
expression *	expression_from_identifier (const char *identifier)
	Create an expression from an identifier. More...
expression *	expression_from_number (long int number)
	Create an expression from a number. More...
void	expression_init (expression *e)
	Initialize an expression. More...

Detailed Description

Create or destroy expressions.

Since

version 1.0.0

Blank expressions can be created with expression_alloc(). Any expression created via expression_alloc() can be destroyed with expression_free(). An expression can be copied with expression_copy().

It is also possible to directly create constant expressions from:

• a boolean value: expression_from_boolean()
• an identifier: expression_from_identifier()
• a number: expression_from_number()

Warning

It is strongly advised not to use expression_init() and expression_clean() unless you know what you are doing!

Function Documentation

expression * expression_alloc ( void  )

related

Allocate and initialize an expression.

Since

version 1.0.0

Returns

A pointer to the newly allocated expression.

Note

It is not needed to initialize the resulting expression using expression_init().

void expression_clean ( expression *  e )

related

Clean an expression.

Since

version 1.0.0

Parameters

e	A pointer to the expression to clean.

Note

This function is already called by expression_free().

expression * expression_copy ( const expression *  e )

related

Copy an expression.

Since

version 1.0.0

Parameters

e	A pointer to the expression to copy.

Returns

A pointer to the copy.

void expression_free ( expression *  e )

related

Free an expression.

Since

version 1.0.0

Parameters

e	A pointer to the expression to free.

expression * expression_from_boolean ( bool  boolean )

related

Create an expression from a boolean.

Since

version 1.0.0

Parameters

boolean

Input boolean.

Returns

The resulting expression.

expression * expression_from_identifier ( const char *  identifier )

related

Create an expression from an identifier.

Since

version 1.0.0

Parameters

identifier

Input identifier.

Returns

The resulting expression.

expression * expression_from_number ( long int  number )

related

Create an expression from a number.

Since

version 1.0.0

Parameters

number

Input number.

Returns

The resulting expression.

void expression_init ( expression *  e )

related

Initialize an expression.

Since

version 1.0.0

Parameters

e	A pointer to the expression to initialize.

Note

This function is already called by expression_alloc().