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patch 9.0.2156: Vim9: can use typealias in assignment

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Problem:  Vim9: can use typealias in an assignment
Solution: Generate errors when class/typealias involved in the rhs of an
          assignment

closes: #13637

Signed-off-by: Ernie Rael <errael@raelity.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
Generate errors when class/typealias involved in assignment.
This commit is contained in:
Ernie Rael
2023-12-11 17:40:46 +01:00
committed by Christian Brabandt
parent fa920da283
commit 9ed53752df
10 changed files with 156 additions and 22 deletions
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62
src/vim9type.c
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@@ -1846,4 +1846,66 @@ f_typename(typval_T *argvars, typval_T *rettv)
clear_type_list(&type_list);
}
/*
* Check if the typval_T is a value type; report an error if it is not.
* Note: a type, user defined or typealias, is not a value type.
*
* Return OK if it's a value type, else FAIL
*/
int
check_typval_is_value(typval_T *tv)
{
if (tv->v_type == VAR_CLASS)
{
semsg(_(e_using_class_as_value_str), tv->vval.v_class->class_name);
return FAIL;
}
else if (tv->v_type == VAR_TYPEALIAS)
{
semsg(_(e_using_typealias_as_value_str), tv->vval.v_typealias->ta_name);
return FAIL;
}
return OK;
}
/*
* Same as above, except check type_T.
*/
int
check_type_is_value(type_T *type)
{
if (type->tt_type == VAR_CLASS)
{
semsg(_(e_using_class_as_value_str), type->tt_class->class_name);
return FAIL;
}
else if (type->tt_type == VAR_TYPEALIAS)
{
// Not sure what could be done here to get a name
// TODO: MAYBE AN OPTIONAL ARGUMENT
emsg(_(e_using_typealias_as_var_val));
return FAIL;
}
return OK;
}
/*
* Same as above, except check vartype_T.
*/
int
check_vartype_is_value(vartype_T typ)
{
if (typ == VAR_CLASS)
{
emsg(_(e_using_class_as_var_val));
return FAIL;
}
else if (typ == VAR_TYPEALIAS)
{
emsg(_(e_using_typealias_as_var_val));
return FAIL;
}
return OK;
}
#endif // FEAT_EVAL