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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/vim.h
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@@ -2142,7 +2142,8 @@ typedef int sock_T;
#define VV_SIZEOFPOINTER 104
#define VV_MAXCOL 105
#define VV_PYTHON3_VERSION 106
#define VV_LEN 107 // number of v: vars
#define VV_TYPE_TYPEALIAS 107
#define VV_LEN 108 // number of v: vars
// used for v_number in VAR_BOOL and VAR_SPECIAL
#define VVAL_FALSE 0L // VAR_BOOL
@@ -2165,6 +2166,7 @@ typedef int sock_T;
#define VAR_TYPE_INSTR 11
#define VAR_TYPE_CLASS 12
#define VAR_TYPE_OBJECT 13
#define VAR_TYPE_TYPEALIAS 15
#define DICT_MAXNEST 100 // maximum nesting of lists and dicts