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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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28
src/errors.h
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@@ -3384,17 +3384,17 @@ EXTERN char e_invalid_object_variable_declaration_str[]
EXTERN char e_not_valid_command_in_class_str[]
INIT(= N_("E1318: Not a valid command in a class: %s"));
EXTERN char e_using_class_as_number[]
INIT(= N_("E1319: Using a class as a Number"));
INIT(= N_("E1319: Using a Class as a Number"));
EXTERN char e_using_object_as_number[]
INIT(= N_("E1320: Using an object as a Number"));
INIT(= N_("E1320: Using an Object as a Number"));
EXTERN char e_using_class_as_float[]
INIT(= N_("E1321: Using a class as a Float"));
INIT(= N_("E1321: Using a Class as a Float"));
EXTERN char e_using_object_as_float[]
INIT(= N_("E1322: Using an object as a Float"));
INIT(= N_("E1322: Using an Object as a Float"));
EXTERN char e_using_class_as_string[]
INIT(= N_("E1323: Using a class as a String"));
INIT(= N_("E1323: Using a Class as a String"));
EXTERN char e_using_object_as_string[]
INIT(= N_("E1324: Using an object as a String"));
INIT(= N_("E1324: Using an Object as a String"));
EXTERN char e_method_not_found_on_class_str_str[]
INIT(= N_("E1325: Method \"%s\" not found in class \"%s\""));
EXTERN char e_variable_not_found_on_object_str_str[]
@@ -3538,8 +3538,22 @@ EXTERN char e_cannot_lock_object_variable_str[]
INIT(= N_("E1391: Cannot (un)lock variable \"%s\" in class \"%s\""));
EXTERN char e_cannot_lock_class_variable_str[]
INIT(= N_("E1392: Cannot (un)lock class variable \"%s\" in class \"%s\""));
EXTERN char e_type_can_only_be_defined_in_vim9_script[]
INIT(= N_("E1393: Type can only be defined in Vim9 script"));
EXTERN char e_type_name_must_start_with_uppercase_letter_str[]
INIT(= N_("E1394: Type name must start with an uppercase letter: %s"));
EXTERN char e_using_typealias_as_variable[]
INIT(= N_("E1395: Type alias \"%s\" cannot be used as a variable"));
EXTERN char e_typealias_already_exists_for_str[]
INIT(= N_("E1396: Type alias \"%s\" already exists"));
EXTERN char e_missing_typealias_name[]
INIT(= N_("E1397: Missing type alias name"));
EXTERN char e_missing_typealias_type[]
INIT(= N_("E1398: Missing type alias type"));
EXTERN char e_type_can_only_be_used_in_script[]
INIT(= N_("E1399: Type can only be used in a script"));
#endif
// E1393 - E1499 unused (reserved for Vim9 class support)
// E1400 - E1499 unused (reserved for Vim9 class support)
EXTERN char e_cannot_mix_positional_and_non_positional_str[]
INIT(= N_("E1500: Cannot mix positional and non-positional arguments: %s"));
EXTERN char e_fmt_arg_nr_unused_str[]