Union

The union type represents union types. More...

Functions
ir_type *	new_type_union (ident *name)
	Creates a new type union.
ir_type *	new_d_type_union (ident *name, type_dbg_info *db)
	Creates a new type union with debug information.
ident *	get_union_ident (const ir_type *uni)
	Returns union identifier.
const char *	get_union_name (const ir_type *uni)
	Returns union identifier as c-string.
size_t	get_union_n_members (const ir_type *uni)
	Returns the number of unioned types of this union.
ir_entity *	get_union_member (const ir_type *uni, size_t pos)
	Returns the entity at position pos of a union.
size_t	get_union_member_index (const ir_type *uni, ir_entity *member)
	Returns index of member in uni, -1 if not contained.
int	is_Union_type (const ir_type *uni)
	Returns true if a type is a union type.
const tp_op *	get_tpop_union (void)
	Returns type opcode for union type.

Variables
const tp_op *	type_union
	This type opcode marks that the corresponding type is a union type.

Detailed Description

The union type represents union types.

Note that this representation resembles the C union type. For tagged variant types like in Pascal or Modula a combination of a struct and a union type must be used.

• n_types: Number of unioned types.
• members: Entities for unioned types. Fixed length array. This is a dynamic list that can be grown with an "add_" function, but not shrinked.

Function Documentation

const tp_op* get_tpop_union

(

void

)

Returns type opcode for union type.

See Also

type_union

ident* get_union_ident

(

const ir_type *

uni

)

Returns union identifier.

ir_entity* get_union_member	(	const ir_type *	uni,
		size_t	pos
	)

Returns the entity at position pos of a union.

size_t get_union_member_index	(	const ir_type *	uni,
		ir_entity *	member
	)

Returns index of member in uni, -1 if not contained.

size_t get_union_n_members

(

const ir_type *

uni

)

Returns the number of unioned types of this union.

const char* get_union_name

(

const ir_type *

uni

)

Returns union identifier as c-string.

int is_Union_type

(

const ir_type *

uni

)

Returns true if a type is a union type.

ir_type* new_d_type_union	(	ident *	name,
		type_dbg_info *	db
	)

Creates a new type union with debug information.

ir_type* new_type_union

(

ident *

name

)

Creates a new type union.

Variable Documentation

const tp_op* type_union

This type opcode marks that the corresponding type is a union type.

Consequently it refers to a list of unioned types. This struct is dynamically allocated but constant for the lifetime of the library.

Definition at line 1572 of file typerep.h.