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patch 8.2.1647: Vim9: result of expression with && and || is not a bool

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Problem:    Vim9: result of expression with && and || cannot be assigned to a
            bool variable.
Solution:   Add the TTFLAG_BOOL_OK flag and convert the value if needed.
This commit is contained in:
Bram Moolenaar
2020-09-09 20:03:46 +02:00
parent 33e3346322
commit 4ed124cc6c
4 changed files with 66 additions and 2 deletions
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18
src/testdir/test_vim9_script.vim
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@@ -46,9 +46,16 @@ def Test_assignment_bool()
assert_equal(v:false, bool2)
let bool3: bool = 0
assert_equal(0, bool3)
assert_equal(false, bool3)
let bool4: bool = 1
assert_equal(1, bool4)
assert_equal(true, bool4)
let bool5: bool = 'yes' && 'no'
assert_equal(true, bool5)
let bool6: bool = [] && 99
assert_equal(false, bool6)
let bool7: bool = [] || #{a: 1} && 99
assert_equal(true, bool7)
let lines =<< trim END
vim9script
@@ -57,8 +64,15 @@ def Test_assignment_bool()
return flag
enddef
let flag: bool = GetFlag()
assert_equal(true, flag)
flag = 0
# assert_equal(false, flag)
flag = 1
# assert_equal(true, flag)
# flag = 99 || 123
# assert_equal(true, flag)
# flag = 'yes' && []
# assert_equal(false, flag)
END
CheckScriptSuccess(lines)
CheckDefAndScriptFailure(['let x: bool = 2'], 'E1012:')