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annotate src/testdir/test_lambda.vim @ 28499:a35d54d01ade v8.2.4774

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patch 8.2.4774: crash when using a number for lambda name Commit: https://github.com/vim/vim/commit/8b91e71441069b1dde9ac9ff9d9a829b1b4aecca Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 17 15:06:35 2022 +0100 patch 8.2.4774: crash when using a number for lambda name Problem: Crash when using a number for lambda name. Solution: Check the type of the lambda reference.
author Bram Moolenaar <Bram@vim.org>
date Sun, 17 Apr 2022 16:15:03 +0200
parents 6047c7ea7963
children c6aadb2c4cd7
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1 " Test for lambda and closure
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2
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3 source check.vim
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4
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5 func Test_lambda_feature()
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6 call assert_equal(1, has('lambda'))
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7 endfunc
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8
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9 func Test_lambda_with_filter()
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10 let s:x = 2
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11 call assert_equal([2, 3], filter([1, 2, 3], {i, v -> v >= s:x}))
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12 endfunc
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13
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14 func Test_lambda_with_map()
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15 let s:x = 1
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16 call assert_equal([2, 3, 4], map([1, 2, 3], {i, v -> v + s:x}))
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17 endfunc
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19 func Test_lambda_with_sort()
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20 call assert_equal([1, 2, 3, 4, 7], sort([3,7,2,1,4], {a, b -> a - b}))
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21 endfunc
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23 func Test_lambda_with_timer()
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24 CheckFeature timers
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26 let s:n = 0
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27 let s:timer_id = 0
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28 func! s:Foo()
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29 let s:timer_id = timer_start(10, {-> execute("let s:n += 1 | echo s:n", "")}, {"repeat": -1})
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30 endfunc
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32 call s:Foo()
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33 " check timer works
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34 for i in range(0, 10)
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35 if s:n > 0
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36 break
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37 endif
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38 sleep 10m
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39 endfor
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40
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41 " do not collect lambda
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42 call test_garbagecollect_now()
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43
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44 " check timer still works
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45 let m = s:n
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46 for i in range(0, 10)
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47 if s:n > m
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48 break
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49 endif
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50 sleep 10m
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51 endfor
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52
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53 call timer_stop(s:timer_id)
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54 call assert_true(s:n > m)
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55 endfunc
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56
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57 func Test_lambda_with_partial()
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58 let l:Cb = function({... -> ['zero', a:1, a:2, a:3]}, ['one', 'two'])
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59 call assert_equal(['zero', 'one', 'two', 'three'], l:Cb('three'))
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60 endfunc
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62 function Test_lambda_fails()
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63 call assert_equal(3, {a, b -> a + b}(1, 2))
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64 call assert_fails('echo {a, a -> a + a}(1, 2)', 'E853:')
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65 call assert_fails('echo {a, b -> a + b)}(1, 2)', 'E451:')
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66 echo assert_fails('echo 10->{a -> a + 2}', 'E107:')
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67
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68 call assert_fails('eval 0->(', "E110: Missing ')'")
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69 call assert_fails('eval 0->(3)()', "E1275:")
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70 call assert_fails('eval 0->([3])()', "E1275:")
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71 call assert_fails('eval 0->({"a": 3})()', "E1275:")
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72 call assert_fails('eval 0->(xxx)()', "E121:")
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73 endfunc
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74
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75 func Test_not_lamda()
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76 let x = {'>' : 'foo'}
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77 call assert_equal('foo', x['>'])
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78 endfunc
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79
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80 func Test_lambda_capture_by_reference()
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81 let v = 1
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82 let l:F = {x -> x + v}
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83 let v = 2
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84 call assert_equal(12, l:F(10))
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85 endfunc
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86
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87 func Test_lambda_side_effect()
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88 func! s:update_and_return(arr)
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89 let a:arr[1] = 5
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90 return a:arr
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91 endfunc
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92
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93 func! s:foo(arr)
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94 return {-> s:update_and_return(a:arr)}
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95 endfunc
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96
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97 let arr = [3,2,1]
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98 call assert_equal([3, 5, 1], s:foo(arr)())
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99 endfunc
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100
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101 func Test_lambda_refer_local_variable_from_other_scope()
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102 func! s:foo(X)
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103 return a:X() " refer l:x in s:bar()
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104 endfunc
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105
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106 func! s:bar()
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107 let x = 123
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108 return s:foo({-> x})
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109 endfunc
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110
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111 call assert_equal(123, s:bar())
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112 endfunc
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113
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114 func Test_lambda_do_not_share_local_variable()
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115 func! s:define_funcs()
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116 let l:One = {-> split(execute("let a = 'abc' | echo a"))[0]}
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117 let l:Two = {-> exists("a") ? a : "no"}
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118 return [l:One, l:Two]
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119 endfunc
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120
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121 let l:F = s:define_funcs()
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122
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123 call assert_equal('no', l:F[1]())
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124 call assert_equal('abc', l:F[0]())
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125 call assert_equal('no', l:F[1]())
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126 endfunc
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127
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128 func Test_lambda_closure_counter()
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129 func! s:foo()
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130 let x = 0
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131 return {-> [execute("let x += 1"), x][-1]}
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132 endfunc
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133
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134 let l:F = s:foo()
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135 call test_garbagecollect_now()
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136 call assert_equal(1, l:F())
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137 call assert_equal(2, l:F())
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138 call assert_equal(3, l:F())
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139 call assert_equal(4, l:F())
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140 endfunc
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141
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142 func Test_lambda_with_a_var()
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143 func! s:foo()
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144 let x = 2
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145 return {... -> a:000 + [x]}
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146 endfunc
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147 func! s:bar()
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148 return s:foo()(1)
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149 endfunc
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150
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151 call assert_equal([1, 2], s:bar())
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152 endfunc
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153
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154 func Test_lambda_call_lambda_from_lambda()
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155 func! s:foo(x)
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156 let l:F1 = {-> {-> a:x}}
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157 return {-> l:F1()}
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158 endfunc
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159
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160 let l:F = s:foo(1)
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161 call assert_equal(1, l:F()())
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162 endfunc
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163
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164 func Test_lambda_delfunc()
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165 func! s:gen()
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166 let pl = l:
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167 let l:Foo = {-> get(pl, "Foo", get(pl, "Bar", {-> 0}))}
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168 let l:Bar = l:Foo
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169 delfunction l:Foo
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170 return l:Bar
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171 endfunc
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172
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173 let l:F = s:gen()
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174 call assert_fails(':call l:F()', 'E933:')
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175 endfunc
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176
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177 func Test_lambda_scope()
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178 func! s:NewCounter()
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179 let c = 0
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180 return {-> [execute('let c += 1'), c][-1]}
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181 endfunc
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182
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183 func! s:NewCounter2()
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184 return {-> [execute('let c += 100'), c][-1]}
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185 endfunc
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186
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187 let l:C = s:NewCounter()
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188 let l:D = s:NewCounter2()
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189
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190 call assert_equal(1, l:C())
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191 call assert_fails(':call l:D()', 'E121:')
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192 call assert_equal(2, l:C())
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193 endfunc
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194
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195 func Test_lambda_share_scope()
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196 func! s:New()
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197 let c = 0
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198 let l:Inc0 = {-> [execute('let c += 1'), c][-1]}
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199 let l:Dec0 = {-> [execute('let c -= 1'), c][-1]}
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200 return [l:Inc0, l:Dec0]
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201 endfunc
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202
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203 let [l:Inc, l:Dec] = s:New()
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204
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205 call assert_equal(1, l:Inc())
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206 call assert_equal(2, l:Inc())
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207 call assert_equal(1, l:Dec())
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208 endfunc
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209
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210 func Test_lambda_circular_reference()
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211 func! s:Foo()
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212 let d = {}
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213 let d.f = {-> d}
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214 return d.f
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215 endfunc
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216
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217 call s:Foo()
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218 call test_garbagecollect_now()
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219 let i = 0 | while i < 10000 | call s:Foo() | let i+= 1 | endwhile
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220 call test_garbagecollect_now()
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221 endfunc
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222
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223 func Test_lambda_combination()
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224 call assert_equal(2, {x -> {x -> x}}(1)(2))
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225 call assert_equal(10, {y -> {x -> x(y)(10)}({y -> y})}({z -> z}))
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226 if has('float')
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227 call assert_equal(5.0, {x -> {y -> x / y}}(10)(2.0))
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228 endif
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229 call assert_equal(6, {x -> {y -> {z -> x + y + z}}}(1)(2)(3))
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230
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231 call assert_equal(6, {x -> {f -> f(x)}}(3)({x -> x * 2}))
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232 call assert_equal(6, {f -> {x -> f(x)}}({x -> x * 2})(3))
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233
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234 " Z combinator
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235 let Z = {f -> {x -> f({y -> x(x)(y)})}({x -> f({y -> x(x)(y)})})}
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236 let Fact = {f -> {x -> x == 0 ? 1 : x * f(x - 1)}}
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237 call assert_equal(120, Z(Fact)(5))
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238 endfunc
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239
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240 func Test_closure_counter()
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241 func! s:foo()
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242 let x = 0
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243 func! s:bar() closure
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244 let x += 1
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245 return x
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246 endfunc
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247 return function('s:bar')
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248 endfunc
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249
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250 let l:F = s:foo()
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251 call test_garbagecollect_now()
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252 call assert_equal(1, l:F())
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253 call assert_equal(2, l:F())
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254 call assert_equal(3, l:F())
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255 call assert_equal(4, l:F())
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256
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257 call assert_match("^\n function <SNR>\\d\\+_bar() closure"
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258 \ .. "\n1 let x += 1"
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259 \ .. "\n2 return x"
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260 \ .. "\n endfunction$", execute('func s:bar'))
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261 endfunc
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262
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263 func Test_closure_unlet()
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264 func! s:foo()
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265 let x = 1
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266 func! s:bar() closure
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267 unlet x
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268 endfunc
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269 call s:bar()
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270 return l:
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271 endfunc
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272
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273 call assert_false(has_key(s:foo(), 'x'))
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274 call test_garbagecollect_now()
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275 endfunc
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276
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277 func LambdaFoo()
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278 let x = 0
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279 func! LambdaBar() closure
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280 let x += 1
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281 return x
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282 endfunc
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283 return function('LambdaBar')
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284 endfunc
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285
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286 func Test_closure_refcount()
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287 let g:Count = LambdaFoo()
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288 call test_garbagecollect_now()
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289 call assert_equal(1, g:Count())
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290 let g:Count2 = LambdaFoo()
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291 call test_garbagecollect_now()
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292 call assert_equal(1, g:Count2())
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293 call assert_equal(2, g:Count())
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294 call assert_equal(3, g:Count2())
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295
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296 delfunc LambdaFoo
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297 delfunc LambdaBar
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298 endfunc
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299
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300 func Test_named_function_closure()
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301 func! Afoo()
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302 let x = 14
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303 func! s:Abar() closure
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304 return x
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305 endfunc
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306 call assert_equal(14, s:Abar())
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307 endfunc
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308 call Afoo()
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309 call assert_equal(14, s:Abar())
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310 call test_garbagecollect_now()
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311 call assert_equal(14, s:Abar())
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312 endfunc
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313
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314 func Test_lambda_with_index()
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315 let List = {x -> [x]}
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316 let Extract = {-> function(List, ['foobar'])()[0]}
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317 call assert_equal('foobar', Extract())
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318 endfunc
18851
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319
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320 func Test_lambda_error()
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321 " This was causing a crash
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322 call assert_fails('ec{@{->{d->()()', 'E15:')
18851
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323 endfunc
19724
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324
19932
2c4d9ca33769 patch 8.2.0522: several errors are not tested for
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325 func Test_closure_error()
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326 let l =<< trim END
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327 func F1() closure
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328 return 1
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329 endfunc
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330 END
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331 call writefile(l, 'Xscript')
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332 let caught_932 = 0
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333 try
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334 source Xscript
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335 catch /E932:/
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336 let caught_932 = 1
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337 endtry
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338 call assert_equal(1, caught_932)
25118
12fd67997953 patch 8.2.3096: temp files remain after running tests
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339 call delete('Xscript')
19932
2c4d9ca33769 patch 8.2.0522: several errors are not tested for
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parents: 19826
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340 endfunc
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parents: 19826
diff changeset
341
19724
b3e93a05c3ca patch 8.2.0418: code in eval.c not sufficiently covered by tests
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parents: 19249
diff changeset
342 " vim: shiftwidth=2 sts=2 expandtab