| 1 |
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| 2 | #### command sub $(echo hi)
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| 3 | var x = $(echo hi)
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| 4 | var y = $(echo '')
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| 5 | # Make sure we can operate on these values
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| 6 | echo x=${x:-default} y=${y:-default}
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| 7 | ## STDOUT:
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| 8 | x=hi y=default
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| 9 | ## END
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| 10 |
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| 11 |
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| 12 | #### Set $HOME using 'var' (i.e. YSH string var in word evaluator)
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| 13 | var HOME = "foo"
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| 14 | echo $HOME
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| 15 | echo ~
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| 16 | ## STDOUT:
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| 17 | foo
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| 18 | foo
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| 19 | ## END
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| 20 |
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| 21 | #### Use shell var in YSH expression
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| 22 | x='abc'
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| 23 | var length = len(x) # length in BYTES, unlike ${#x}
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| 24 | echo $length
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| 25 | ## STDOUT:
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| 26 | 3
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| 27 | ## END
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| 28 |
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| 29 | #### Length doesn't apply to BashArray
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| 30 | x=(a b c)
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| 31 | x[10]=A
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| 32 | x[20]=B
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| 33 |
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| 34 | # shell style: length is 5
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| 35 | echo shell=${#x[@]}
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| 36 |
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| 37 | shopt --set parse_ysh_expr_sub
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| 38 |
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| 39 | # Length could be 20, but we may change the representation to Dict[int, str]
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| 40 | echo ysh=$[len(x)]
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| 41 |
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| 42 | ## status: 3
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| 43 | ## STDOUT:
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| 44 | shell=5
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| 45 | ## END
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| 46 |
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| 47 | #### $[len(x)] inside strings
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| 48 | var s = "abc"
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| 49 |
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| 50 | shopt --set parse_ysh_expr_sub
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| 51 |
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| 52 | echo -$[len(s)]-
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| 53 |
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| 54 | # This already has a meaning ...
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| 55 | #echo "-$len(x)-"
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| 56 | #echo "-${len}(x)-"
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| 57 |
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| 58 | ## STDOUT:
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| 59 | -3-
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| 60 | ## END
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| 61 |
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| 62 | #### Func with multiple args in multiple contexts
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| 63 | shopt --set ysh:upgrade # needed for math.ysh
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| 64 |
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| 65 | source $LIB_YSH/math.ysh
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| 66 |
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| 67 | var x = max(1+2, 3+4)
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| 68 | echo $x $[max(1+2, 3+4)]
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| 69 |
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| 70 | ## STDOUT:
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| 71 | 7 7
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| 72 | ## END
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| 73 |
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| 74 |
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| 75 | #### Trailing Comma in Param list
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| 76 | shopt --set ysh:upgrade # needed for math.ysh
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| 77 |
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| 78 | source $LIB_YSH/math.ysh
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| 79 |
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| 80 | var x = max(1+2, 3+4,)
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| 81 | echo $x $[max(1+2, 3+4,)]
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| 82 |
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| 83 | ## STDOUT:
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| 84 | 7 7
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| 85 | ## END
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| 86 |
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| 87 | #### nested expr contexts
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| 88 | var s = "123"
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| 89 |
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| 90 | shopt --set parse_ysh_expr_sub
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| 91 | # lex_mode_e.ShCommand -> Expr -> ShCommand -> Expr
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| 92 | var x = $(echo $'len\n' $[len(s)])
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| 93 | echo $x
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| 94 | ## STDOUT:
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| 95 | len 3
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| 96 | ## END
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| 97 |
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| 98 |
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| 99 | # TODO:
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| 100 | # - test keyword args
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| 101 | # - test splatting *args, **kwargs
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| 102 | # - Multiline parsing
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| 103 | #
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| 104 | # var x = max(
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| 105 | # 1+2,
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| 106 | # 3+4,
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| 107 | # )
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| 108 | # echo $x $max(
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| 109 | # 1+2,
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| 110 | # 3+4,
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| 111 | # )
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| 112 |
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| 113 | #### YSH var used with shell arithmetic
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| 114 | var w = "3"
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| 115 | echo lt=$(( w < 4 ))
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| 116 | echo gt=$(( w > 4 ))
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| 117 |
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| 118 | var z = 3
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| 119 | echo lt=$(( z < 4 ))
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| 120 | echo gt=$(( z > 4 ))
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| 121 | ## STDOUT:
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| 122 | lt=1
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| 123 | gt=0
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| 124 | lt=1
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| 125 | gt=0
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| 126 | ## END
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| 127 |
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| 128 | #### Parse { var x = 42 }
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| 129 | shopt -s ysh:upgrade
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| 130 | g() { var x = 42 }
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| 131 |
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| 132 | var x = 1
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| 133 | f() { var x = 42; setvar x = 43 }
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| 134 | f
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| 135 | echo x=$x
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| 136 | ## STDOUT:
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| 137 | x=1
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| 138 | ## END
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| 139 |
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| 140 | #### double quoted
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| 141 | var foo = "bar"
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| 142 | var x = "-$foo-${foo}-${undef:-default}-"
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| 143 | echo $x
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| 144 | ## STDOUT:
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| 145 | -bar-bar-default-
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| 146 | ## END
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| 147 |
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| 148 | #### double quoted respects strict_array
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| 149 | shopt -s strict:all
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| 150 | declare -a a=(one two three)
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| 151 | var x = "-${a[@]}-"
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| 152 | echo $x
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| 153 | ## status: 1
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| 154 | ## stdout-json: ""
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| 155 |
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| 156 | #### simple var sub $name $0 $1 $? etc.
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| 157 | ( exit 42 )
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| 158 | var status = $?
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| 159 | echo status=$status
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| 160 |
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| 161 | set -- a b c
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| 162 | var one = $1
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| 163 | var two = $2
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| 164 | echo $one $two
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| 165 |
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| 166 | var named = "$one" # equivalent to 'one'
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| 167 | echo named=$named
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| 168 |
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| 169 | ## STDOUT:
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| 170 | status=42
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| 171 | a b
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| 172 | named=a
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| 173 | ## END
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| 174 |
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| 175 | #### braced var sub ${x:-default}
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| 176 |
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| 177 | # without double quotes
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| 178 |
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| 179 | var b = ${foo:-default}
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| 180 | echo $b
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| 181 | var c = ${bar:-"-$b-"}
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| 182 | echo $c
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| 183 |
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| 184 | var d = "${bar:-"-$c-"}" # another one
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| 185 | echo $d
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| 186 |
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| 187 | ## STDOUT:
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| 188 | default
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| 189 | -default-
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| 190 | --default--
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| 191 | ## END
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| 192 |
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| 193 | #### braced var sub respects strict_array
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| 194 | set -- a b c
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| 195 | var x = ${undef:-"$@"}
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| 196 | echo $x
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| 197 | shopt -s strict_array
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| 198 | setvar x = ${undef:-"$@"}
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| 199 | echo $x
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| 200 | ## status: 1
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| 201 | ## STDOUT:
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| 202 | a b c
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| 203 | ## END
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| 204 |
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| 205 |
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| 206 | #### null / true / false
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| 207 | shopt -s ysh:upgrade
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| 208 | var n = null
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| 209 | if (n) {
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| 210 | echo yes
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| 211 | } else {
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| 212 | echo no
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| 213 | }
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| 214 | var t = true
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| 215 | if (t) {
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| 216 | echo yes
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| 217 | } else {
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| 218 | echo no
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| 219 | }
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| 220 | var f = false
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| 221 | if (f) {
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| 222 | echo yes
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| 223 | } else {
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| 224 | echo no
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| 225 | }
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| 226 | ## STDOUT:
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| 227 | no
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| 228 | yes
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| 229 | no
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| 230 | ## END
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| 231 |
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| 232 | #### multiline dict
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| 233 |
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| 234 | # Note: a pair has to be all on one line. We could relax that but there isn't
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| 235 | # a strong reason to now.
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| 236 |
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| 237 | var mydict = { a:1,
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| 238 | b: 2,
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| 239 | }
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| 240 |
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| 241 | shopt --set parse_ysh_expr_sub
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| 242 |
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| 243 | echo mydict=$[len(mydict)]
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| 244 | ## STDOUT:
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| 245 | mydict=2
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| 246 | ## END
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| 247 |
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| 248 | #### multiline array and command sub (only here docs disallowed)
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| 249 | var array = %(
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| 250 | one
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| 251 | two
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| 252 | three
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| 253 | )
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| 254 |
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| 255 | shopt --set parse_ysh_expr_sub
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| 256 |
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| 257 | echo array=$[len(array)]
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| 258 |
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| 259 | var comsub = $(
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| 260 | echo hi
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| 261 | echo bye
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| 262 | )
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| 263 | echo comsub=$[len(comsub)]
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| 264 |
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| 265 | ## STDOUT:
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| 266 | array=3
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| 267 | comsub=6
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| 268 | ## END
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| 269 |
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| 270 | #### obj=>method() - remove?
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| 271 | var s = 'hi'
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| 272 |
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| 273 | # TODO: This does a bound method thing we probably don't want
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| 274 | var s2 = s=>upper()
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| 275 | echo $s2
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| 276 | ## STDOUT:
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| 277 | HI
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| 278 | ## END
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| 279 |
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| 280 | #### s->upper does NOT work, should be s.upper() or =>
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| 281 | var s = 'hi'
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| 282 | var method = s->upper
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| 283 | echo $method
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| 284 | ## status: 3
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| 285 | ## stdout-json: ""
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| 286 |
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| 287 | #### d.key
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| 288 | var d = {name: 'andy'}
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| 289 | var x = d.name
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| 290 | echo $x
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| 291 | ## STDOUT:
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| 292 | andy
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| 293 | ## END
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| 294 |
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| 295 | #### a ++ b for string/list concatenation
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| 296 | shopt -s parse_brace parse_ysh_expr_sub
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| 297 |
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| 298 | var i = 'abc'
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| 299 | var j = 'de'
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| 300 | var k = i ++ j
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| 301 | echo string $k
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| 302 |
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| 303 |
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| 304 | var a = [1, 2]
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| 305 | var b = [3]
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| 306 | var c = a ++ b
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| 307 | echo list len=$[len(c)]
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| 308 |
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| 309 | echo ---
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| 310 |
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| 311 | try {
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| 312 | = 'ab' ++ 3
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| 313 | }
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| 314 | echo Str Int $_status
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| 315 |
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| 316 | try {
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| 317 | = [1, 2] ++ 3
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| 318 | }
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| 319 | echo List Int $_status
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| 320 |
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| 321 | try {
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| 322 | = 3 ++ 'ab'
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| 323 | }
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| 324 | echo Int Str $_status
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| 325 |
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| 326 | ## STDOUT:
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| 327 | string abcde
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| 328 | list len=3
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| 329 | ---
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| 330 | Str Int 3
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| 331 | List Int 3
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| 332 | Int Str 3
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| 333 | ## END
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| 334 |
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| 335 | #### s ~~ glob and s !~~ glob
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| 336 | shopt -s ysh:all
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| 337 |
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| 338 | if ('foo.py' ~~ '*.py') {
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| 339 | echo yes
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| 340 | }
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| 341 | if ('foo.py' !~~ '*.sh') {
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| 342 | echo no
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| 343 | }
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| 344 | ## STDOUT:
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| 345 | yes
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| 346 | no
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| 347 | ## END
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| 348 |
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| 349 | #### Type Errors
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| 350 | shopt --set parse_brace
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| 351 |
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| 352 | # TODO: It might be nice to get a message
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| 353 | try {
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| 354 | var x = {} + []
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| 355 | }
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| 356 | echo $_status
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| 357 |
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| 358 | try {
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| 359 | setvar x = {} + 3
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| 360 | }
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| 361 | echo $_status
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| 362 |
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| 363 | try {
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| 364 | = 'foo' ++ 3
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| 365 | }
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| 366 | echo $_status
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| 367 |
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| 368 | try {
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| 369 | = 'foo' ++ 3
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| 370 | }
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| 371 | echo $_status
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| 372 |
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| 373 | ## STDOUT:
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| 374 | 3
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| 375 | 3
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| 376 | 3
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| 377 | 3
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| 378 | ## END
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| 379 |
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| 380 |
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| 381 | #### can't use ++ on integers
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| 382 | var x = 12 ++ 3
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| 383 | echo $x
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| 384 | ## status: 3
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| 385 | ## STDOUT:
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| 386 | ## END
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| 387 |
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| 388 | #### can't do mystr ++ mylist
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| 389 | = ["s"] + "t"
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| 390 | ## status: 3
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| 391 | ## STDOUT:
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| 392 | ## END
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| 393 |
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| 394 |
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| 395 | #### expression literals
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| 396 | var e = ^[1 + 2]
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| 397 |
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| 398 | shopt --set parse_ysh_expr_sub
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| 399 |
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| 400 | echo type=$[type(e)]
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| 401 | echo $[io->evalExpr(e)]
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| 402 |
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| 403 | var e = ^[2 < 1]
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| 404 | echo $[io->evalExpr(e)]
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| 405 |
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| 406 | var x = 42
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| 407 | var e = ^[42 === x and true]
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| 408 | echo $[io->evalExpr(e)]
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| 409 |
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| 410 | var mylist = ^[3, 4]
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| 411 | pp test_ (io->evalExpr(mylist))
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| 412 |
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| 413 | ## STDOUT:
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| 414 | type=Expr
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| 415 | 3
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| 416 | false
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| 417 | true
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| 418 | (List) [3,4]
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| 419 | ## END
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| 420 |
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| 421 | #### No list comprehension in ^[]
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| 422 |
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| 423 | var mylist = ^[x for x in y]
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| 424 | pp test_ (io->evalExpr(mylist))
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| 425 |
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| 426 | ## status: 2
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| 427 | ## STDOUT:
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| 428 | ## END
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| 429 |
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| 430 |
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| 431 | #### expression literals, evaluation failure
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| 432 | var e = ^[1 / 0]
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| 433 | call io->evalExpr(e)
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| 434 | ## status: 3
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| 435 | ## STDOUT:
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| 436 | ## END
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| 437 |
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| 438 | #### expression literals, lazy evaluation
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| 439 | shopt --set parse_ysh_expr_sub
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| 440 |
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| 441 | var x = 0
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| 442 | var e = ^[x]
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| 443 |
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| 444 | setvar x = 1
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| 445 | echo result=$[io->evalExpr(e)]
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| 446 | ## STDOUT:
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| 447 | result=1
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| 448 | ## END
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| 449 |
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| 450 | #### expression literals, sugar for strings
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| 451 | shopt --set parse_ysh_expr_sub
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| 452 |
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| 453 | var x = 0
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| 454 | var e = ^"x is $x"
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| 455 |
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| 456 | setvar x = 1
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| 457 | echo result=$[io->evalExpr(e)]
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| 458 | ## STDOUT:
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| 459 | result=x is 1
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| 460 | ## END
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