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patch 9.0.1786: Vim9: need instanceof() function

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Problem:  Vim9: need instanceof() function
Solution: Implement instanceof() builtin

Implemented in the same form as Python's isinstance because it allows
for checking multiple class types at the same time.

closes: #12867

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: LemonBoy <thatlemon@gmail.com>
This commit is contained in:
LemonBoy
2023-08-23 21:08:11 +02:00
committed by Christian Brabandt
parent 1193951beb
commit afe0466fb1
13 changed files with 212 additions and 19 deletions
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18
src/testdir/test_vim9_builtin.vim
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@@ -2301,6 +2301,24 @@ def Test_insert()
v9.CheckDefAndScriptFailure(['insert([2, 3], 1, "x")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
enddef
def Test_instanceof()
var lines =<< trim END
vim9script
class Foo
endclass
instanceof('hello', Foo)
END
v9.CheckScriptFailure(lines, 'E616: Object required for argument 1')
lines =<< trim END
vim9script
class Foo
endclass
instanceof(Foo.new(), 123)
END
v9.CheckScriptFailure(lines, 'E693: List or Class required for argument 2')
enddef
def Test_invert()
v9.CheckDefAndScriptFailure(['invert("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
enddef