1 | ## our_shell: ysh
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2 | ## oils_failures_allowed: 1
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3 |
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4 | #### Local place
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5 |
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6 | # Work around stdin buffering issue with read --line
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7 | #
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8 | # The framework test/sh_spec.py uses echo "$code_string" | $SH
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9 | #
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10 | # But then we have TWO different values of file descriptor 0 (stdin)
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11 | #
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12 | # - the pipe with the code
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13 | # - the pipe created in th shell for echo zzz | read --line
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14 | #
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15 | # Shells read one line at a time, but read --line explicitly avoids this.
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16 | #
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17 | # TODO: I wonder if we should consider outlawing read --line when stdin has code
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18 | # Only allow it for:
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19 | #
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20 | # $SH -c 'echo hi'
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21 | # $SH myscript.sh
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22 | #
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23 | # There could be a warning like read --line --no-fighting or something.
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24 |
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25 | cat >tmp.sh <<'EOF'
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26 | func f(place) {
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27 | var x = 'f'
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28 | echo zzz | read --all (place)
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29 | echo "f x=$x"
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30 | }
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31 |
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32 | func fillPlace(place) {
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33 | var x = 'fillPlace'
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34 | call f(place)
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35 | echo "fillPlace x=$x"
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36 | }
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37 |
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38 | proc p {
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39 | var x = 'hi'
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40 | call fillPlace(&x)
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41 | echo "p x=$x"
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42 | }
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43 |
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44 | x=global
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45 |
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46 | p
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47 |
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48 | echo "global x=$x"
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49 | EOF
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50 |
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51 | $SH tmp.sh
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52 |
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53 | ## STDOUT:
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54 | f x=f
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55 | fillPlace x=fillPlace
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56 | p x=zzz
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57 |
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58 | global x=global
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59 | ## END
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60 |
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61 | #### place->setValue()
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62 |
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63 | func f(place) {
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64 | var x = 'f'
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65 | call place->setValue('zzz')
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66 | echo "f x=$x"
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67 | }
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68 |
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69 | func fillPlace(place) {
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70 | var x = 'fillPlace'
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71 | call f(place)
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72 | echo "fillPlace x=$x"
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73 | }
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74 |
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75 | proc p {
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76 | var x = 'hi'
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77 | call fillPlace(&x)
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78 | echo "p x=$x"
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79 | }
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80 |
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81 | x=global
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82 |
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83 | p
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84 | echo "global x=$x"
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85 |
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86 | ## STDOUT:
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87 | f x=f
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88 | fillPlace x=fillPlace
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89 | p x=zzz
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90 | global x=global
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91 | ## END
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92 |
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93 | #### Places can't dangle; they should be passed UP the stakc only
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94 |
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95 | func f() {
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96 | var f_local = null
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97 | return (&f_local)
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98 | }
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99 |
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100 | func g() {
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101 | # This place is now INVALID!
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102 | var place = f()
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103 |
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104 | # Should fail when we try to use the place
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105 | echo zzz | read --all (place)
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106 |
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107 | # This should also fail
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108 | # call place->setValue('zzz')
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109 |
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110 | }
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111 |
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112 | call g()
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113 |
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114 | echo done
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115 |
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116 | ## status: 1
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117 | ## STDOUT:
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118 | ## END
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119 |
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120 |
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121 | #### Container Place (Dict)
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122 |
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123 | var d = {key: 'hi'}
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124 |
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125 | echo zzz | read --all (&d.key)
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126 |
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127 | # I guess this works
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128 | echo newkey | read --all (&d.newkey)
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129 |
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130 | echo key=$[d.key]
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131 | echo key=$[d.newkey]
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132 |
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133 | ## STDOUT:
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134 | ## END
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135 |
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136 |
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