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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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30
src/typval.c
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@@ -92,6 +92,10 @@ free_tv(typval_T *varp)
object_unref(varp->vval.v_object);
break;
case VAR_TYPEALIAS:
typealias_unref(varp->vval.v_typealias);
break;
case VAR_NUMBER:
case VAR_FLOAT:
case VAR_ANY:
@@ -169,6 +173,10 @@ clear_tv(typval_T *varp)
object_unref(varp->vval.v_object);
varp->vval.v_object = NULL;
break;
case VAR_TYPEALIAS:
typealias_unref(varp->vval.v_typealias);
varp->vval.v_typealias = NULL;
break;
case VAR_UNKNOWN:
case VAR_ANY:
case VAR_VOID:
@@ -262,6 +270,10 @@ tv_get_bool_or_number_chk(
case VAR_VOID:
emsg(_(e_cannot_use_void_value));
break;
case VAR_TYPEALIAS:
semsg(_(e_using_typealias_as_variable),
varp->vval.v_typealias->ta_name);
break;
case VAR_UNKNOWN:
case VAR_ANY:
case VAR_INSTR:
@@ -379,6 +391,10 @@ tv_get_float_chk(typval_T *varp, int *error)
case VAR_VOID:
emsg(_(e_cannot_use_void_value));
break;
case VAR_TYPEALIAS:
semsg(_(e_using_typealias_as_variable),
varp->vval.v_typealias->ta_name);
break;
case VAR_UNKNOWN:
case VAR_ANY:
case VAR_INSTR:
@@ -1129,6 +1145,7 @@ tv_get_string_buf_chk_strict(typval_T *varp, char_u *buf, int strict)
case VAR_VOID:
emsg(_(e_cannot_use_void_value));
break;
case VAR_TYPEALIAS:
case VAR_UNKNOWN:
case VAR_ANY:
case VAR_INSTR:
@@ -1290,6 +1307,15 @@ copy_tv(typval_T *from, typval_T *to)
++to->vval.v_dict->dv_refcount;
}
break;
case VAR_TYPEALIAS:
if (from->vval.v_typealias == NULL)
to->vval.v_typealias = NULL;
else
{
to->vval.v_typealias = from->vval.v_typealias;
++to->vval.v_typealias->ta_refcount;
}
break;
case VAR_VOID:
emsg(_(e_cannot_use_void_value));
break;
@@ -1596,6 +1622,7 @@ typval_compare_null(typval_T *tv1, typval_T *tv2)
case VAR_FLOAT: if (!in_vim9script())
return tv->vval.v_float == 0.0;
break;
case VAR_TYPEALIAS: return tv->vval.v_typealias == NULL;
default: break;
}
}
@@ -2069,6 +2096,9 @@ tv_equal(
case VAR_FUNC:
return tv1->vval.v_string == tv2->vval.v_string;
case VAR_TYPEALIAS:
return tv1->vval.v_typealias == tv2->vval.v_typealias;
case VAR_UNKNOWN:
case VAR_ANY:
case VAR_VOID: