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patch 8.2.1744: Vim9: using ":const!" is weird

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Problem:    Vim9: using ":const!" is weird.
Solution:   Use "var" - "final" - "const" like Dart.  "let" still works for
            now.
This commit is contained in:
Bram Moolenaar
2020-09-26 15:09:30 +02:00
parent 273af497ca
commit 30fd8204ce
16 changed files with 512 additions and 382 deletions
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34
src/testdir/test_vim9_script.vim
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@@ -193,21 +193,21 @@ def Test_wrong_type()
enddef
def Test_const()
CheckDefFailure(['const var = 234', 'var = 99'], 'E1018:')
CheckDefFailure(['const one = 234', 'let one = 99'], 'E1017:')
CheckDefFailure(['const list = [1, 2]', 'let list = [3, 4]'], 'E1017:')
CheckDefFailure(['const two'], 'E1021:')
CheckDefFailure(['const &option'], 'E996:')
CheckDefFailure(['final var = 234', 'var = 99'], 'E1018:')
CheckDefFailure(['final one = 234', 'let one = 99'], 'E1017:')
CheckDefFailure(['final list = [1, 2]', 'let list = [3, 4]'], 'E1017:')
CheckDefFailure(['final two'], 'E1125:')
CheckDefFailure(['final &option'], 'E996:')
let lines =<< trim END
const list = [1, 2, 3]
final list = [1, 2, 3]
list[0] = 4
list->assert_equal([4, 2, 3])
const! other = [5, 6, 7]
const other = [5, 6, 7]
other->assert_equal([5, 6, 7])
let varlist = [7, 8]
const! constlist = [1, varlist, 3]
const constlist = [1, varlist, 3]
varlist[0] = 77
# TODO: does not work yet
# constlist[1][1] = 88
@@ -216,7 +216,7 @@ def Test_const()
constlist->assert_equal([1, [77, 88], 3])
let vardict = #{five: 5, six: 6}
const! constdict = #{one: 1, two: vardict, three: 3}
const constdict = #{one: 1, two: vardict, three: 3}
vardict['five'] = 55
# TODO: does not work yet
# constdict['two']['six'] = 66
@@ -229,35 +229,35 @@ enddef
def Test_const_bang()
let lines =<< trim END
const! var = 234
const var = 234
var = 99
END
CheckDefExecFailure(lines, 'E1018:', 2)
CheckScriptFailure(['vim9script'] + lines, 'E46:', 3)
lines =<< trim END
const! ll = [2, 3, 4]
const ll = [2, 3, 4]
ll[0] = 99
END
CheckDefExecFailure(lines, 'E1119:', 2)
CheckScriptFailure(['vim9script'] + lines, 'E741:', 3)
lines =<< trim END
const! ll = [2, 3, 4]
const ll = [2, 3, 4]
ll[3] = 99
END
CheckDefExecFailure(lines, 'E1118:', 2)
CheckScriptFailure(['vim9script'] + lines, 'E684:', 3)
lines =<< trim END
const! dd = #{one: 1, two: 2}
const dd = #{one: 1, two: 2}
dd["one"] = 99
END
CheckDefExecFailure(lines, 'E1121:', 2)
CheckScriptFailure(['vim9script'] + lines, 'E741:', 3)
lines =<< trim END
const! dd = #{one: 1, two: 2}
const dd = #{one: 1, two: 2}
dd["three"] = 99
END
CheckDefExecFailure(lines, 'E1120:')
@@ -2531,6 +2531,12 @@ enddef
def Test_let_declaration_fails()
let lines =<< trim END
vim9script
final var: string
END
CheckScriptFailure(lines, 'E1125:')
lines =<< trim END
vim9script
const var: string
END