| 1 | ## our_shell: ysh
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| 2 | ## oils_failures_allowed: 2
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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 | #### [DISABLED] Places can't dangle; they should passed UP the stack 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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