| 1 | ## our_shell: ysh
|
| 2 | ## oils_failures_allowed: 0
|
| 3 |
|
| 4 | #### For loop over expression: List
|
| 5 | var mylist = [1, 2, 3]
|
| 6 | for item in (mylist) {
|
| 7 | echo "item $item"
|
| 8 | }
|
| 9 |
|
| 10 | ## STDOUT:
|
| 11 | item 1
|
| 12 | item 2
|
| 13 | item 3
|
| 14 | ## END
|
| 15 |
|
| 16 | #### For loop over expression: Dict, not BashAssoc
|
| 17 |
|
| 18 | var mydict = {name: 'bob', age: 40}
|
| 19 | for key in (mydict) {
|
| 20 | echo "key $key"
|
| 21 | }
|
| 22 |
|
| 23 | declare -A A=([name]=bob)
|
| 24 | for key in (A) {
|
| 25 | echo "key $key"
|
| 26 | }
|
| 27 |
|
| 28 | ## status: 3
|
| 29 | ## STDOUT:
|
| 30 | key name
|
| 31 | key age
|
| 32 | ## END
|
| 33 |
|
| 34 |
|
| 35 | #### For loop over range
|
| 36 | var myrange = 0 .. 3
|
| 37 | for i in (myrange) {
|
| 38 | echo "i $i"
|
| 39 | }
|
| 40 |
|
| 41 | ## STDOUT:
|
| 42 | i 0
|
| 43 | i 1
|
| 44 | i 2
|
| 45 | ## END
|
| 46 |
|
| 47 | #### Shell for loop with index (equivalent of enumerate())
|
| 48 | for i, item in a b c {
|
| 49 | echo "$i $item"
|
| 50 | }
|
| 51 | ## STDOUT:
|
| 52 | 0 a
|
| 53 | 1 b
|
| 54 | 2 c
|
| 55 | ## END
|
| 56 |
|
| 57 | #### 3 indices with (mylist) is a runtime error
|
| 58 | for i, item bad in (['foo', 'bar']) {
|
| 59 | echo "$i $item $bad"
|
| 60 | }
|
| 61 | ## status: 2
|
| 62 |
|
| 63 | #### Shell for loop can't have 3 indices
|
| 64 | for i, bad, bad in a b c {
|
| 65 | echo $i $item
|
| 66 | }
|
| 67 | ## status: 2
|
| 68 |
|
| 69 | #### Any for loop can't have 4 indiecs
|
| 70 | for a, b, c, d in (['foo']) {
|
| 71 | echo $i $item
|
| 72 | }
|
| 73 | ## status: 2
|
| 74 |
|
| 75 | #### Expression for loop with index: List
|
| 76 | for i, item in (['spam', 'eggs']) {
|
| 77 | echo "$i $item"
|
| 78 | }
|
| 79 | ## STDOUT:
|
| 80 | 0 spam
|
| 81 | 1 eggs
|
| 82 | ## END
|
| 83 |
|
| 84 | #### Expression for loop with index: Dict (TODO: define dict iter order)
|
| 85 | for key, value in ({name: 'bob', age: 40}) {
|
| 86 | echo "pair $key $value"
|
| 87 | }
|
| 88 | ## STDOUT:
|
| 89 | pair name bob
|
| 90 | pair age 40
|
| 91 | ## END
|
| 92 |
|
| 93 | #### Dict: index key value loop (TODO: define dict iter order)
|
| 94 | for i, key, value in ({name: 'bob', age: 40}) {
|
| 95 | echo "entry $i $key $value"
|
| 96 | }
|
| 97 | ## STDOUT:
|
| 98 | entry 0 name bob
|
| 99 | entry 1 age 40
|
| 100 | ## END
|
| 101 |
|
| 102 |
|
| 103 | #### Equivalent of zip()
|
| 104 |
|
| 105 | var array = :| d e f |
|
| 106 |
|
| 107 | for i, item in a b c {
|
| 108 | echo "$i $item $[array[i]]"
|
| 109 | }
|
| 110 |
|
| 111 | ## STDOUT:
|
| 112 | 0 a d
|
| 113 | 1 b e
|
| 114 | 2 c f
|
| 115 | ## END
|
| 116 |
|
| 117 | #### parse_bare_word eliminates confusion
|
| 118 |
|
| 119 | shopt --unset parse_bare_word
|
| 120 |
|
| 121 | for x in mylist { # THIS FAILS
|
| 122 | echo "BAD $x"
|
| 123 | }
|
| 124 |
|
| 125 | ## status: 2
|
| 126 | ## STDOUT:
|
| 127 | ## END
|
| 128 |
|
| 129 |
|
| 130 | #### Object that's not iterable
|
| 131 |
|
| 132 | echo hi
|
| 133 | for x in (42) {
|
| 134 | echo $x
|
| 135 | }
|
| 136 |
|
| 137 | ## status: 3
|
| 138 | ## STDOUT:
|
| 139 | hi
|
| 140 | ## END
|
| 141 |
|
| 142 | #### YSH for with brace substitution and glob
|
| 143 |
|
| 144 | touch {foo,bar}.py
|
| 145 | for i, file in *.py {README,foo}.md {
|
| 146 | echo "$i $file"
|
| 147 | }
|
| 148 | ## STDOUT:
|
| 149 | 0 bar.py
|
| 150 | 1 foo.py
|
| 151 | 2 README.md
|
| 152 | 3 foo.md
|
| 153 | ## END
|
| 154 |
|
| 155 | #### for x in <> {
|
| 156 |
|
| 157 | # to avoid stdin conflict
|
| 158 |
|
| 159 | $SH $REPO_ROOT/spec/testdata/ysh-for-stdin.ysh
|
| 160 |
|
| 161 | ## STDOUT:
|
| 162 | -1-
|
| 163 | -2-
|
| 164 | -3-
|
| 165 |
|
| 166 | 0 1
|
| 167 | 1 2
|
| 168 | 2 3
|
| 169 |
|
| 170 | empty
|
| 171 | done
|
| 172 |
|
| 173 | empty2
|
| 174 | done2
|
| 175 |
|
| 176 | space
|
| 177 | hi
|
| 178 | ## END
|