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annotate src/testdir/test_vim9_func.vim @ 19926:d286bfc44149 v8.2.0519

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patch 8.2.0519: Vim9: return type not properly checked Commit: https://github.com/vim/vim/commit/8922860afb2cf9e89417c0c1417f1fb4458d3b44 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 5 22:14:54 2020 +0200 patch 8.2.0519: Vim9: return type not properly checked Problem: Vim9: return type not properly checked. Solution: Check type properly, also at runtime.
author Bram Moolenaar <Bram@vim.org>
date Sun, 05 Apr 2020 22:15:36 +0200
parents 1f42c49c3d29
children 2c4d9ca33769
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
19912
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1 " Test various aspects of the Vim9 script language.
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2
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3 source check.vim
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4 source view_util.vim
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5
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6 " Check that "lines" inside ":def" results in an "error" message.
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7 func CheckDefFailure(lines, error)
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8 call writefile(['def Func()'] + a:lines + ['enddef'], 'Xdef')
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9 call assert_fails('so Xdef', a:error, a:lines)
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10 call delete('Xdef')
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11 endfunc
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12
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13 func CheckScriptFailure(lines, error)
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14 call writefile(a:lines, 'Xdef')
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15 call assert_fails('so Xdef', a:error, a:lines)
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16 call delete('Xdef')
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17 endfunc
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18
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19 func Test_def_basic()
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20 def SomeFunc(): string
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21 return 'yes'
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22 enddef
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23 call assert_equal('yes', SomeFunc())
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24 endfunc
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25
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26 def ReturnString(): string
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27 return 'string'
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28 enddef
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29
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30 def ReturnNumber(): number
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31 return 123
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32 enddef
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33
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34 let g:notNumber = 'string'
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35
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36 def ReturnGlobal(): number
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37 return g:notNumber
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38 enddef
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39
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40 def Test_return_something()
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41 assert_equal('string', ReturnString())
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42 assert_equal(123, ReturnNumber())
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43 assert_fails('call ReturnGlobal()', 'E1029: Expected number but got string')
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44 enddef
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45
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46 let s:nothing = 0
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47 def ReturnNothing()
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48 s:nothing = 1
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49 if true
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50 return
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51 endif
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52 s:nothing = 2
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53 enddef
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54
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55 def Test_return_nothing()
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56 ReturnNothing()
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57 assert_equal(1, s:nothing)
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58 enddef
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59
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60 func Increment()
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61 let g:counter += 1
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62 endfunc
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63
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64 def Test_call_ufunc_count()
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65 g:counter = 1
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66 Increment()
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67 Increment()
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68 Increment()
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69 " works with and without :call
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70 assert_equal(4, g:counter)
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71 call assert_equal(4, g:counter)
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72 unlet g:counter
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73 enddef
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74
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75 def MyVarargs(arg: string, ...rest: list<string>): string
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76 let res = arg
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77 for s in rest
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78 res ..= ',' .. s
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79 endfor
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80 return res
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81 enddef
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82
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83 def Test_call_varargs()
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84 assert_equal('one', MyVarargs('one'))
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85 assert_equal('one,two', MyVarargs('one', 'two'))
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86 assert_equal('one,two,three', MyVarargs('one', 'two', 'three'))
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87 enddef
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88
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89 def MyDefaultArgs(name = 'string'): string
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90 return name
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91 enddef
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92
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93 def Test_call_default_args()
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94 assert_equal('string', MyDefaultArgs())
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95 assert_equal('one', MyDefaultArgs('one'))
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96 assert_fails('call MyDefaultArgs("one", "two")', 'E118:')
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97
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98 call CheckScriptFailure(['def Func(arg: number = asdf)', 'enddef'], 'E1001:')
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99 enddef
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100
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101 func Test_call_default_args_from_func()
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102 call assert_equal('string', MyDefaultArgs())
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103 call assert_equal('one', MyDefaultArgs('one'))
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104 call assert_fails('call MyDefaultArgs("one", "two")', 'E118:')
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105 endfunc
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106
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107 func TakesOneArg(arg)
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108 echo a:arg
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109 endfunc
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110
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111 def Test_call_wrong_args()
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112 call CheckDefFailure(['TakesOneArg()'], 'E119:')
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113 call CheckDefFailure(['TakesOneArg(11, 22)'], 'E118:')
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114 call CheckDefFailure(['bufnr(xxx)'], 'E1001:')
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115 enddef
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116
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117 " Default arg and varargs
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118 def MyDefVarargs(one: string, two = 'foo', ...rest: list<string>): string
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119 let res = one .. ',' .. two
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120 for s in rest
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121 res ..= ',' .. s
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122 endfor
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123 return res
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124 enddef
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125
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126 def Test_call_def_varargs()
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127 call assert_fails('call MyDefVarargs()', 'E119:')
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128 assert_equal('one,foo', MyDefVarargs('one'))
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129 assert_equal('one,two', MyDefVarargs('one', 'two'))
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130 assert_equal('one,two,three', MyDefVarargs('one', 'two', 'three'))
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131 enddef
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132
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133 def Test_using_var_as_arg()
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134 call writefile(['def Func(x: number)', 'let x = 234', 'enddef'], 'Xdef')
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135 call assert_fails('so Xdef', 'E1006:')
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136 call delete('Xdef')
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137 enddef
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138
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139 def Test_call_func_defined_later()
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140 call assert_equal('one', DefinedLater('one'))
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141 call assert_fails('call NotDefined("one")', 'E117:')
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142 enddef
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143
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144 func DefinedLater(arg)
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145 return a:arg
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146 endfunc
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147
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148 def FuncWithForwardCall()
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149 return DefinedEvenLater("yes")
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150 enddef
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151
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152 def DefinedEvenLater(arg: string): string
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153 return arg
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154 enddef
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155
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156 def Test_error_in_nested_function()
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157 " Error in called function requires unwinding the call stack.
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158 assert_fails('call FuncWithForwardCall()', 'E1029')
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159 enddef
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160
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161 def Test_return_type_wrong()
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162 CheckScriptFailure(['def Func(): number', 'return "a"', 'enddef'], 'expected number but got string')
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163 CheckScriptFailure(['def Func(): string', 'return 1', 'enddef'], 'expected string but got number')
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164 CheckScriptFailure(['def Func(): void', 'return "a"', 'enddef'], 'expected void but got string')
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165 CheckScriptFailure(['def Func()', 'return "a"', 'enddef'], 'expected void but got string')
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166
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167 CheckScriptFailure(['def Func(): number', 'return', 'enddef'], 'E1003:')
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168
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169 CheckScriptFailure(['def Func(): list', 'return []', 'enddef'], 'E1008:')
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170 CheckScriptFailure(['def Func(): dict', 'return {}', 'enddef'], 'E1008:')
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171 enddef
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172
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173 def Test_arg_type_wrong()
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174 CheckScriptFailure(['def Func3(items: list)', 'echo "a"', 'enddef'], 'E1008: Missing <type>')
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175 enddef
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176
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177 def Test_vim9script_call()
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178 let lines =<< trim END
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179 vim9script
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180 let var = ''
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181 def MyFunc(arg: string)
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182 var = arg
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183 enddef
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184 MyFunc('foobar')
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185 assert_equal('foobar', var)
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186
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187 let str = 'barfoo'
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188 str->MyFunc()
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189 assert_equal('barfoo', var)
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190
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191 let g:value = 'value'
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192 g:value->MyFunc()
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193 assert_equal('value', var)
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194
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195 let listvar = []
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196 def ListFunc(arg: list<number>)
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197 listvar = arg
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198 enddef
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199 [1, 2, 3]->ListFunc()
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200 assert_equal([1, 2, 3], listvar)
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201
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202 let dictvar = {}
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203 def DictFunc(arg: dict<number>)
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204 dictvar = arg
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205 enddef
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206 {'a': 1, 'b': 2}->DictFunc()
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207 assert_equal(#{a: 1, b: 2}, dictvar)
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208 def CompiledDict()
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209 {'a': 3, 'b': 4}->DictFunc()
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210 enddef
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211 CompiledDict()
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212 assert_equal(#{a: 3, b: 4}, dictvar)
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213
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214 #{a: 3, b: 4}->DictFunc()
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215 assert_equal(#{a: 3, b: 4}, dictvar)
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216
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217 ('text')->MyFunc()
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218 assert_equal('text', var)
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219 ("some")->MyFunc()
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220 assert_equal('some', var)
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221 END
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222 writefile(lines, 'Xcall.vim')
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223 source Xcall.vim
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224 delete('Xcall.vim')
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225 enddef
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226
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227 def Test_vim9script_call_fail_decl()
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228 let lines =<< trim END
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229 vim9script
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230 let var = ''
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231 def MyFunc(arg: string)
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232 let var = 123
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233 enddef
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234 END
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235 writefile(lines, 'Xcall_decl.vim')
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236 assert_fails('source Xcall_decl.vim', 'E1054:')
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237 delete('Xcall_decl.vim')
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238 enddef
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239
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240 def Test_vim9script_call_fail_const()
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241 let lines =<< trim END
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242 vim9script
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243 const var = ''
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244 def MyFunc(arg: string)
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245 var = 'asdf'
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246 enddef
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247 END
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248 writefile(lines, 'Xcall_const.vim')
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249 assert_fails('source Xcall_const.vim', 'E46:')
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250 delete('Xcall_const.vim')
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251 enddef
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252
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253 " Test that inside :function a Python function can be defined, :def is not
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254 " recognized.
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255 func Test_function_python()
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256 CheckFeature python3
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diff changeset
257 let py = 'python3'
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258 execute py "<< EOF"
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259 def do_something():
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260 return 1
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261 EOF
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262 endfunc
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263
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264 def Test_delfunc()
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265 let lines =<< trim END
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266 vim9script
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267 def GoneSoon()
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268 echo 'hello'
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269 enddef
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270
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271 def CallGoneSoon()
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272 GoneSoon()
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273 enddef
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274
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275 delfunc GoneSoon
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276 CallGoneSoon()
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277 END
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278 writefile(lines, 'XToDelFunc')
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279 assert_fails('so XToDelFunc', 'E933')
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280 assert_fails('so XToDelFunc', 'E933')
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281
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282 delete('XToDelFunc')
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283 enddef
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284
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285 def Test_redef_failure()
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286 call writefile(['def Func0(): string', 'return "Func0"', 'enddef'], 'Xdef')
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287 so Xdef
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288 call writefile(['def Func1(): string', 'return "Func1"', 'enddef'], 'Xdef')
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289 so Xdef
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290 call writefile(['def! Func0(): string', 'enddef'], 'Xdef')
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291 call assert_fails('so Xdef', 'E1027:')
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292 call writefile(['def Func2(): string', 'return "Func2"', 'enddef'], 'Xdef')
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293 so Xdef
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294 call delete('Xdef')
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295
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296 call assert_equal(0, Func0())
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297 call assert_equal('Func1', Func1())
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298 call assert_equal('Func2', Func2())
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299
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300 delfunc! Func0
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301 delfunc! Func1
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diff changeset
302 delfunc! Func2
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303 enddef
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304
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305 " Test for internal functions returning different types
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306 func Test_InternalFuncRetType()
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307 let lines =<< trim END
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308 def RetFloat(): float
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309 return ceil(1.456)
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310 enddef
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311
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312 def RetListAny(): list<any>
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313 return items({'k' : 'v'})
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314 enddef
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315
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316 def RetListString(): list<string>
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317 return split('a:b:c', ':')
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318 enddef
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319
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320 def RetListDictAny(): list<dict<any>>
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321 return getbufinfo()
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322 enddef
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323
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324 def RetDictNumber(): dict<number>
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325 return wordcount()
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326 enddef
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diff changeset
327
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diff changeset
328 def RetDictString(): dict<string>
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329 return environ()
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330 enddef
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331 END
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332 call writefile(lines, 'Xscript')
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diff changeset
333 source Xscript
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diff changeset
334
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diff changeset
335 call assert_equal(2.0, RetFloat())
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diff changeset
336 call assert_equal([['k', 'v']], RetListAny())
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
337 call assert_equal(['a', 'b', 'c'], RetListString())
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diff changeset
338 call assert_notequal([], RetListDictAny())
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diff changeset
339 call assert_notequal({}, RetDictNumber())
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340 call assert_notequal({}, RetDictString())
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341 call delete('Xscript')
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diff changeset
342 endfunc
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diff changeset
343
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diff changeset
344 " Test for passing too many or too few arguments to internal functions
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345 func Test_internalfunc_arg_error()
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346 let l =<< trim END
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diff changeset
347 def! FArgErr(): float
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diff changeset
348 return ceil(1.1, 2)
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diff changeset
349 enddef
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350 END
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diff changeset
351 call writefile(l, 'Xinvalidarg')
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diff changeset
352 call assert_fails('so Xinvalidarg', 'E118:')
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diff changeset
353 let l =<< trim END
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diff changeset
354 def! FArgErr(): float
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355 return ceil()
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diff changeset
356 enddef
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diff changeset
357 END
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diff changeset
358 call writefile(l, 'Xinvalidarg')
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diff changeset
359 call assert_fails('so Xinvalidarg', 'E119:')
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diff changeset
360 call delete('Xinvalidarg')
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diff changeset
361 endfunc
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diff changeset
362
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
363 let s:funcResult = 0
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
364
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
365 def FuncNoArgNoRet()
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diff changeset
366 funcResult = 11
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diff changeset
367 enddef
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
368
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
369 def FuncNoArgRetNumber(): number
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diff changeset
370 funcResult = 22
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diff changeset
371 return 1234
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
372 enddef
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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parents:
diff changeset
373
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
374 def FuncOneArgNoRet(arg: number)
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diff changeset
375 funcResult = arg
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diff changeset
376 enddef
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
377
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
378 def FuncOneArgRetNumber(arg: number): number
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diff changeset
379 funcResult = arg
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diff changeset
380 return arg
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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diff changeset
381 enddef
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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parents:
diff changeset
382
19926
d286bfc44149 patch 8.2.0519: Vim9: return type not properly checked
Bram Moolenaar <Bram@vim.org>
parents: 19922
diff changeset
383 def FuncOneArgRetAny(arg: any): any
d286bfc44149 patch 8.2.0519: Vim9: return type not properly checked
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parents: 19922
diff changeset
384 return arg
d286bfc44149 patch 8.2.0519: Vim9: return type not properly checked
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parents: 19922
diff changeset
385 enddef
d286bfc44149 patch 8.2.0519: Vim9: return type not properly checked
Bram Moolenaar <Bram@vim.org>
parents: 19922
diff changeset
386
19912
d4fa9db88d16 patch 8.2.0512: Vim9: no optional arguments in func type
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387 def Test_func_type()
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388 let Ref1: func()
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389 funcResult = 0
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390 Ref1 = FuncNoArgNoRet
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391 Ref1()
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392 assert_equal(11, funcResult)
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393
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394 let Ref2: func
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395 funcResult = 0
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396 Ref2 = FuncNoArgNoRet
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397 Ref2()
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398 assert_equal(11, funcResult)
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399
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400 funcResult = 0
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401 Ref2 = FuncOneArgNoRet
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402 Ref2(12)
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403 assert_equal(12, funcResult)
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404
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405 funcResult = 0
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406 Ref2 = FuncNoArgRetNumber
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407 assert_equal(1234, Ref2())
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408 assert_equal(22, funcResult)
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409
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410 funcResult = 0
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411 Ref2 = FuncOneArgRetNumber
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412 assert_equal(13, Ref2(13))
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413 assert_equal(13, funcResult)
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414 enddef
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415
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416 def Test_func_type_fails()
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417 CheckDefFailure(['let ref1: func()'], 'E704:')
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418
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419 CheckDefFailure(['let Ref1: func()', 'Ref1 = FuncNoArgRetNumber'], 'E1013: type mismatch, expected func() but got func(): number')
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420 CheckDefFailure(['let Ref1: func()', 'Ref1 = FuncOneArgNoRet'], 'E1013: type mismatch, expected func() but got func(number)')
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421 CheckDefFailure(['let Ref1: func()', 'Ref1 = FuncOneArgRetNumber'], 'E1013: type mismatch, expected func() but got func(number): number')
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422 enddef
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423
19926
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424 def Test_func_return_type()
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425 let nr: number
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426 nr = FuncNoArgRetNumber()
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427 assert_equal(1234, nr)
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428
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429 nr = FuncOneArgRetAny(122)
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430 assert_equal(122, nr)
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431
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432 let str: string
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433 str = FuncOneArgRetAny('yes')
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434 assert_equal('yes', str)
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435
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436 CheckDefFailure(['let str: string', 'str = FuncNoArgRetNumber()'], 'E1013: type mismatch, expected string but got number')
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437 enddef
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438
19912
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439
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440 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker