patch 9.0.2076: Vim9: No support for type aliases
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>
diff --git a/src/vim9expr.c b/src/vim9expr.c
index 41ed7e7..c001d9e 100644
--- a/src/vim9expr.c
+++ b/src/vim9expr.c
@@ -238,6 +238,7 @@
case VAR_INSTR:
case VAR_CLASS:
case VAR_OBJECT:
+ case VAR_TYPEALIAS:
case VAR_UNKNOWN:
case VAR_ANY:
case VAR_VOID:
@@ -529,6 +530,13 @@
{
svar_T *sv = ((svar_T *)si->sn_var_vals.ga_data) + idx;
+ if (sv->sv_tv->v_type == VAR_TYPEALIAS)
+ {
+ semsg(_(e_using_typealias_as_variable),
+ sv->sv_tv->vval.v_typealias->ta_name);
+ return FAIL;
+ }
+
generate_VIM9SCRIPT(cctx, ISN_LOADSCRIPT,
current_sctx.sc_sid, idx, sv->sv_type);
return OK;