1 | # Commands covered: foreach, continue, break |
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2 | # |
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3 | # This file contains a collection of tests for one or more of the Tcl |
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4 | # built-in commands. Sourcing this file into Tcl runs the tests and |
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5 | # generates output for errors. No output means no errors were found. |
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6 | # |
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7 | # Copyright (c) 1991-1993 The Regents of the University of California. |
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8 | # Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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9 | # |
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10 | # See the file "license.terms" for information on usage and redistribution |
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11 | # of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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12 | # |
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13 | # RCS: @(#) $Id: foreach.test,v 1.14 2008/03/14 17:43:25 dgp Exp $ |
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14 | |
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15 | if {[lsearch [namespace children] ::tcltest] == -1} { |
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16 | package require tcltest |
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17 | namespace import -force ::tcltest::* |
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18 | } |
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19 | |
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20 | catch {unset a} |
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21 | catch {unset x} |
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22 | |
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23 | # Basic "foreach" operation. |
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24 | |
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25 | test foreach-1.1 {basic foreach tests} { |
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26 | set a {} |
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27 | foreach i {a b c d} { |
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28 | set a [concat $a $i] |
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29 | } |
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30 | set a |
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31 | } {a b c d} |
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32 | test foreach-1.2 {basic foreach tests} { |
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33 | set a {} |
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34 | foreach i {a b {{c d} e} {123 {{x}}}} { |
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35 | set a [concat $a $i] |
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36 | } |
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37 | set a |
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38 | } {a b {c d} e 123 {{x}}} |
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39 | test foreach-1.3 {basic foreach tests} {catch {foreach} msg} 1 |
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40 | test foreach-1.4 {basic foreach tests} { |
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41 | catch {foreach} msg |
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42 | set msg |
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43 | } {wrong # args: should be "foreach varList list ?varList list ...? command"} |
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44 | test foreach-1.5 {basic foreach tests} {catch {foreach i} msg} 1 |
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45 | test foreach-1.6 {basic foreach tests} { |
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46 | catch {foreach i} msg |
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47 | set msg |
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48 | } {wrong # args: should be "foreach varList list ?varList list ...? command"} |
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49 | test foreach-1.7 {basic foreach tests} {catch {foreach i j} msg} 1 |
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50 | test foreach-1.8 {basic foreach tests} { |
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51 | catch {foreach i j} msg |
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52 | set msg |
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53 | } {wrong # args: should be "foreach varList list ?varList list ...? command"} |
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54 | test foreach-1.9 {basic foreach tests} {catch {foreach i j k l} msg} 1 |
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55 | test foreach-1.10 {basic foreach tests} { |
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56 | catch {foreach i j k l} msg |
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57 | set msg |
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58 | } {wrong # args: should be "foreach varList list ?varList list ...? command"} |
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59 | test foreach-1.11 {basic foreach tests} { |
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60 | set a {} |
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61 | foreach i {} { |
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62 | set a [concat $a $i] |
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63 | } |
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64 | set a |
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65 | } {} |
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66 | test foreach-1.12 {foreach errors} { |
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67 | list [catch {foreach {{a}{b}} {1 2 3} {}} msg] $msg |
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68 | } {1 {list element in braces followed by "{b}" instead of space}} |
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69 | test foreach-1.13 {foreach errors} { |
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70 | list [catch {foreach a {{1 2}3} {}} msg] $msg |
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71 | } {1 {list element in braces followed by "3" instead of space}} |
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72 | catch {unset a} |
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73 | test foreach-1.14 {foreach errors} { |
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74 | catch {unset a} |
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75 | set a(0) 44 |
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76 | list [catch {foreach a {1 2 3} {}} msg o] $msg $::errorInfo |
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77 | } {1 {can't set "a": variable is array} {can't set "a": variable is array |
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78 | (setting foreach loop variable "a") |
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79 | invoked from within |
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80 | "foreach a {1 2 3} {}"}} |
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81 | test foreach-1.15 {foreach errors} { |
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82 | list [catch {foreach {} {} {}} msg] $msg |
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83 | } {1 {foreach varlist is empty}} |
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84 | catch {unset a} |
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85 | |
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86 | test foreach-2.1 {parallel foreach tests} { |
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87 | set x {} |
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88 | foreach {a b} {1 2 3 4} { |
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89 | append x $b $a |
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90 | } |
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91 | set x |
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92 | } {2143} |
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93 | test foreach-2.2 {parallel foreach tests} { |
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94 | set x {} |
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95 | foreach {a b} {1 2 3 4 5} { |
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96 | append x $b $a |
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97 | } |
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98 | set x |
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99 | } {21435} |
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100 | test foreach-2.3 {parallel foreach tests} { |
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101 | set x {} |
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102 | foreach a {1 2 3} b {4 5 6} { |
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103 | append x $b $a |
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104 | } |
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105 | set x |
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106 | } {415263} |
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107 | test foreach-2.4 {parallel foreach tests} { |
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108 | set x {} |
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109 | foreach a {1 2 3} b {4 5 6 7 8} { |
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110 | append x $b $a |
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111 | } |
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112 | set x |
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113 | } {41526378} |
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114 | test foreach-2.5 {parallel foreach tests} { |
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115 | set x {} |
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116 | foreach {a b} {a b A B aa bb} c {c C cc CC} { |
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117 | append x $a $b $c |
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118 | } |
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119 | set x |
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120 | } {abcABCaabbccCC} |
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121 | test foreach-2.6 {parallel foreach tests} { |
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122 | set x {} |
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123 | foreach a {1 2 3} b {1 2 3} c {1 2 3} d {1 2 3} e {1 2 3} { |
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124 | append x $a $b $c $d $e |
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125 | } |
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126 | set x |
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127 | } {111112222233333} |
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128 | test foreach-2.7 {parallel foreach tests} { |
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129 | set x {} |
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130 | foreach a {} b {1 2 3} c {1 2} d {1 2 3 4} e {{1 2}} { |
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131 | append x $a $b $c $d $e |
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132 | } |
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133 | set x |
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134 | } {1111 2222334} |
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135 | test foreach-2.8 {foreach only sets vars if repeating loop} { |
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136 | proc foo {} { |
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137 | set rgb {65535 0 0} |
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138 | foreach {r g b} [set rgb] {} |
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139 | return "r=$r, g=$g, b=$b" |
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140 | } |
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141 | foo |
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142 | } {r=65535, g=0, b=0} |
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143 | test foreach-2.9 {foreach only supports local scalar variables} { |
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144 | proc foo {} { |
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145 | set x {} |
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146 | foreach {a(3)} {1 2 3 4} {lappend x [set {a(3)}]} |
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147 | set x |
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148 | } |
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149 | foo |
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150 | } {1 2 3 4} |
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151 | |
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152 | test foreach-3.1 {compiled foreach backward jump works correctly} { |
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153 | catch {unset x} |
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154 | proc foo {arrayName} { |
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155 | upvar 1 $arrayName a |
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156 | set l {} |
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157 | foreach member [array names a] { |
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158 | lappend l [list $member [set a($member)]] |
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159 | } |
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160 | return $l |
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161 | } |
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162 | array set x {0 zero 1 one 2 two 3 three} |
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163 | lsort [foo x] |
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164 | } [lsort {{0 zero} {1 one} {2 two} {3 three}}] |
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165 | |
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166 | test foreach-4.1 {noncompiled foreach and shared variable or value list objects that are converted to another type} { |
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167 | catch {unset x} |
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168 | foreach {12.0} {a b c} { |
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169 | set x 12.0 |
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170 | set x [expr $x + 1] |
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171 | } |
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172 | set x |
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173 | } 13.0 |
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174 | |
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175 | # Check "continue". |
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176 | |
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177 | test foreach-5.1 {continue tests} {catch continue} 4 |
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178 | test foreach-5.2 {continue tests} { |
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179 | set a {} |
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180 | foreach i {a b c d} { |
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181 | if {[string compare $i "b"] == 0} continue |
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182 | set a [concat $a $i] |
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183 | } |
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184 | set a |
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185 | } {a c d} |
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186 | test foreach-5.3 {continue tests} { |
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187 | set a {} |
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188 | foreach i {a b c d} { |
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189 | if {[string compare $i "b"] != 0} continue |
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190 | set a [concat $a $i] |
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191 | } |
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192 | set a |
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193 | } {b} |
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194 | test foreach-5.4 {continue tests} {catch {continue foo} msg} 1 |
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195 | test foreach-5.5 {continue tests} { |
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196 | catch {continue foo} msg |
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197 | set msg |
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198 | } {wrong # args: should be "continue"} |
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199 | |
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200 | # Check "break". |
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201 | |
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202 | test foreach-6.1 {break tests} {catch break} 3 |
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203 | test foreach-6.2 {break tests} { |
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204 | set a {} |
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205 | foreach i {a b c d} { |
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206 | if {[string compare $i "c"] == 0} break |
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207 | set a [concat $a $i] |
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208 | } |
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209 | set a |
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210 | } {a b} |
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211 | test foreach-6.3 {break tests} {catch {break foo} msg} 1 |
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212 | test foreach-6.4 {break tests} { |
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213 | catch {break foo} msg |
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214 | set msg |
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215 | } {wrong # args: should be "break"} |
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216 | # Check for bug #406709 |
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217 | test foreach-6.5 {break tests} { |
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218 | proc a {} { |
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219 | set a 1 |
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220 | foreach b b {list [concat a; break]; incr a} |
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221 | incr a |
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222 | } |
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223 | a |
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224 | } {2} |
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225 | |
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226 | # Test for incorrect "double evaluation" semantics |
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227 | test foreach-7.1 {delayed substitution of body} { |
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228 | proc foo {} { |
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229 | set a 0 |
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230 | foreach a [list 1 2 3] " |
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231 | set x $a |
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232 | " |
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233 | set x |
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234 | } |
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235 | foo |
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236 | } {0} |
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237 | |
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238 | # Test for [Bug 1189274]; crash on failure |
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239 | test foreach-8.1 {empty list handling} { |
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240 | proc crash {} { |
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241 | rename crash {} |
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242 | set a "x y z" |
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243 | set b "" |
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244 | foreach aa $a bb $b { set x "aa = $aa bb = $bb" } |
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245 | } |
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246 | crash |
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247 | } {} |
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248 | |
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249 | # [Bug 1671138]; infinite loop with empty var list in bytecompiled version |
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250 | test foreach-9.1 {compiled empty var list} { |
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251 | proc foo {} { |
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252 | foreach {} x { |
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253 | error "reached body" |
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254 | } |
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255 | } |
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256 | list [catch { foo } msg] $msg |
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257 | } {1 {foreach varlist is empty}} |
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258 | |
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259 | test foreach-10.1 {foreach: [Bug 1671087]} -setup { |
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260 | proc demo {} { |
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261 | set vals {1 2 3 4} |
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262 | trace add variable x write {string length $vals ;# } |
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263 | foreach {x y} $vals {format $y} |
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264 | } |
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265 | } -body { |
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266 | demo |
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267 | } -cleanup { |
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268 | rename demo {} |
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269 | } -result {} |
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270 | |
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271 | # cleanup |
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272 | catch {unset a} |
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273 | catch {unset x} |
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274 | ::tcltest::cleanupTests |
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275 | return |
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