16 Commits

Author	SHA1	Message	Date
Andrew Kelley	2a25398c86	fix segfault when passing union enum with sub byte... ... ...field to const slice parameter we use a packed struct internally to represent a const array of disparate union values, and needed to update the internal getelementptr instruction to recognize that. closes #664	2017-12-24 04:11:58 -05:00
Andrew Kelley	756a218e27	add implicit cast from enum tag type of union to const ptr to the union ... closes #654	2017-12-08 17:49:14 -05:00
Andrew Kelley	c49ee9f632	allow union and its tag type to peer resolve to the tag type	2017-12-05 21:33:24 -05:00
Andrew Kelley	2715f6fdb8	allow implicit cast from union to its enum tag type ... closes #642	2017-12-05 21:10:47 -05:00
Andrew Kelley	960914a073	add implicit cast from enum to union ... when the enum is the tag type of the union and is comptime known to be of a void field of the union See #642	2017-12-05 20:46:58 -05:00
Andrew Kelley	76f3bdfff8	add test for casting union to tag type of union	2017-12-04 02:12:13 -05:00
Andrew Kelley	54138d9e82	add test for union with 1 void field being 0 bits	2017-12-04 02:05:33 -05:00
Andrew Kelley	084911d9b3	add test for @sizeOf on extern and packed unions	2017-12-04 02:04:08 -05:00
Andrew Kelley	fce435db26	fix abi alignment of union-enums not counting tag type ... add more tests for unions See #618	2017-12-04 00:32:12 -05:00
Andrew Kelley	5a8367e892	rename @EnumTagType to @TagType. add tests for union-enums ... See #618	2017-12-03 22:36:01 -05:00
Andrew Kelley	0ad1239522	rework enums and unions and their relationship to each other ... * @enumTagName renamed to @tagName and it works on enums and union-enums * Remove the EnumTag type. Now there is only enum and union, and the tag type of a union is always an enum. * unions support specifying the tag enum type, and they support inferring an enum tag type. * Enums no longer support field types but they do support setting the tag values. Likewise union-enums when inferring an enum tag type support setting the tag values. * It is now an error for enums and unions to have 0 fields. * switch statements support union-enums closes #618	2017-12-03 20:43:56 -05:00
Andrew Kelley	5d2ba056c8	fix codegen for union init with runtime value ... see #144	2017-11-16 22:06:08 -05:00
Andrew Kelley	e26ccd5166	debug safety for unions	2017-11-16 21:15:15 -05:00
Andrew Kelley	018cbff438	unions have a secret field for the type ... See #144	2017-11-15 22:52:47 -05:00
Andrew Kelley	f276fd0f37	basic union support ... See #144	2017-11-15 13:04:18 -05:00
Andrew Kelley	4c306af4eb	add test case for previous commit	2017-10-27 01:22:48 -04:00