Union

Functions
ir_type *	new_type_union (ident *name)
	Creates a new type union.
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 (ir_type const *uni, ir_entity const *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.

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 alternatives.
• members: Entities for the alternatives.

Function Documentation

get_union_member()

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

Returns the entity at position pos of a union.

get_union_member_index()

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

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

get_union_n_members()

size_t get_union_n_members

(

const ir_type *

uni

)

Returns the number of unioned types of this union.

is_Union_type()

int is_Union_type

(

const ir_type *

uni

)

Returns true if a type is a union type.

new_type_union()

ir_type * new_type_union

(

ident *

name

)

Creates a new type union.