| 1 | ## our_shell: ysh
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| 2 |
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| 3 | # Test YSH expressions within $[]
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| 4 |
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| 5 | #### $[f(x)]
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| 6 | var a = %(a b c)
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| 7 | echo $[len(a)]
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| 8 | ## STDOUT:
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| 9 | 3
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| 10 | ## END
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| 11 |
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| 12 | #### $[d['key']]
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| 13 | var d = {}
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| 14 | setvar d['key'] = 42
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| 15 | echo $[d['key']]
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| 16 | ## STDOUT:
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| 17 | 42
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| 18 | ## END
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| 19 |
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| 20 | #### $[d.key]
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| 21 | var d = {}
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| 22 | setvar d['key'] = 42
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| 23 | echo $[d.key]
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| 24 | ## STDOUT:
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| 25 | 42
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| 26 | ## END
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| 27 |
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| 28 | #### In Double quotes
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| 29 | var a = %(a b c)
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| 30 | var obj = /d+/
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| 31 | var d = {}
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| 32 | setvar d['key'] = 42
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| 33 | echo "func $[len(a)]"
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| 34 | echo "key $[d['key']]"
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| 35 | echo "key $[d.key]"
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| 36 | echo "dq $[d["key"]]"
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| 37 | ## STDOUT:
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| 38 | func 3
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| 39 | key 42
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| 40 | key 42
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| 41 | dq 42
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| 42 | ## END
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| 43 |
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| 44 | #### @[expr_splice] in expression mode
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| 45 |
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| 46 | # In addition to:
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| 47 | # write -- @[x]
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| 48 | #
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| 49 | # We can also do:
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| 50 | # var y = @[x]
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| 51 | # write -- @y
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| 52 |
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| 53 | var x = [1, 2, 3]
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| 54 |
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| 55 | var y = @[x] ++ ['99']
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| 56 |
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| 57 | #= y
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| 58 |
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| 59 | # note: related bug in parsing [[ in test/ysh-parse-errors.sh
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| 60 | #assert [['1', '2', '3'] === y]
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| 61 |
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| 62 | assert [ ['1', '2', '3', '99'] === y]
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| 63 |
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| 64 | pp test_ (y)
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| 65 |
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| 66 | pp test_ (@[[4, 5, 6]])
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| 67 |
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| 68 | var bad = [42, []]
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| 69 | pp test_ (@[ bad ]) # cannot be stringified
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| 70 |
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| 71 | ## status: 3
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| 72 | ## STDOUT:
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| 73 | (List) ["1","2","3","99"]
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| 74 | (List) ["4","5","6"]
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| 75 | ## END
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| 76 |
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| 77 |
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| 78 | #### $[expr_sub] in expression mode
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| 79 |
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| 80 | # Test that $[...] works in expression mode, not just in command/word mode
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| 81 |
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| 82 | # Basic integer expression
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| 83 | var a = $[42]
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| 84 | pp test_ (a)
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| 85 |
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| 86 | # Arithmetic expression
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| 87 | var b = $[1 + 2]
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| 88 | pp test_ (b)
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| 89 |
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| 90 | # Function call
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| 91 | var arr = [1, 2, 3]
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| 92 | var c = $[len(arr)]
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| 93 | pp test_ (c)
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| 94 |
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| 95 | # Nested expression
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| 96 | var d = $[$[5] + $[10]]
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| 97 | echo "d = $d"
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| 98 |
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| 99 | # Combined with @[] splice
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| 100 | var items = [10, 20, 30]
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| 101 | var e = @[items]
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| 102 | echo "len(e) = $[len(e)]"
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| 103 |
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| 104 | # Error case: list cannot be stringified
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| 105 | var x = $[ [42] ]
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| 106 |
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| 107 | ## status: 3
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| 108 | ## STDOUT:
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| 109 | (Str) "42"
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| 110 | (Str) "3"
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| 111 | (Str) "3"
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| 112 | d = 15
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| 113 | len(e) = 3
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| 114 | ## END
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