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patch 9.0.2076: Vim9: No support for type aliases

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Problem:  Vim9: No support for type aliases
Solution: Implement :type command

A type definition is giving a name to a type specification.  This also known
type alias.

	:type ListOfStrings = list<string>

The type alias can be used wherever a built-in type can be used.  The type
alias name must start with an upper case character.

closes: #13407

Signed-off-by: Christian Brabandt <cb@256bit.org>
Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
This commit is contained in:
Yegappan Lakshmanan
2023-10-27 19:35:26 +02:00
committed by Christian Brabandt
parent 4bca4897a1
commit ec3cebbd2b
22 changed files with 710 additions and 36 deletions
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4
src/testing.c
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@@ -1132,6 +1132,10 @@ f_test_refcount(typval_T *argvars, typval_T *rettv)
if (argvars[0].vval.v_dict != NULL)
retval = argvars[0].vval.v_dict->dv_refcount - 1;
break;
case VAR_TYPEALIAS:
if (argvars[0].vval.v_typealias != NULL)
retval = argvars[0].vval.v_typealias->ta_refcount - 1;
break;
}
rettv->v_type = VAR_NUMBER;