oli-ej a683fb574b Add initial support for parsing struct patterns (#7446) ...

Implements parsing of struct patterns as per
https://github.com/carbon-language/carbon-lang/issues/6680.

This handles the full and short syntax given in the [design
doc](https://github.com/carbon-language/carbon-lang/blob/trunk/docs/design/pattern_matching.md#struct-patterns),
but the handling of the shorthand syntax may need to change as I move on
to implementing Check support (currently the shorthand is represented as
one of `LetBindingPattern`, `VarBindingPattern`, or `VariablePattern`).

This implementation assumes that the answer to
https://github.com/carbon-language/carbon-lang/issues/7404 is that
trailing commas are allowed in the struct pattern, except for the case
where an `_` is present, in which case the next token must be the
closing brace `}`.

2026-07-30 16:37:46 +00:00

..

fail_comma_only.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_comma_repeat_in_type.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_comma_repeat_in_value.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_extra_token_in_type.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_extra_token_in_value.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_identifier_colon.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_identifier_equals.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_identifier_only.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_invalid_struct_designator.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_missing_type.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_missing_value.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_mix_type_and_value.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_mix_value_and_type.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_mix_with_unknown.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_no_colon_or_equals.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_period_only.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_period_paren.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_period_string_colon.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_period_string_equals.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

fail_type_no_designator.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

no_entries.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

one_entry_no_comma.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

one_entry_with_comma.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00

struct_pattern.carbon

Add initial support for parsing struct patterns (#7446)

2026-07-30 16:37:46 +00:00

two_entries.carbon

Diagnose where in a binding that introduces a .Self that does not refer to the binding (#7517)

2026-07-22 16:45:00 +00:00