immutable-error.mu « 1.vm « archive - mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

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# compare mutable.mu

def main [
  local-scope
  x:&:num <- new number:type
  foo x
]

def foo x:&:num [
  local-scope
  load-inputs
  *x <- copy 34  # will cause an error because x is immutable in this function
]

/* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

c{0: 0 (((1 string-address)) <- ((new)) abc/) -- nil
c{0: 1 (((2 integer)) <- ((find-next)) ((1 string-address)) ((/ literal)) ((0 literal))) -- nil
c{1: 0 ✓ (((1 string-address)) <- ((new)) abc/)
c{1: 1 ✓ (((2 integer)) <- ((find-next)) ((1 string-address)) ((/ literal)) ((0 literal)))
cn0: convert-names in main
cn0: (((1 string-address)) <- ((new)) abc/) nil nil
cn0: checking arg abc/
cn0: checking oarg ((1 string-address))
maybe-add: ((1 string-address))
cn0: (((2 integer)) <- ((find-next)) ((1 string-address)) ((/ literal)) ((0 literal))) nil nil
cn0: checking arg ((1 string-address))
maybe-add: ((1 string-address))
cn0: checking arg ((/ literal))
cn0: checking arg ((0 literal))
cn0: checking oarg ((2 integer))
maybe-add: ((2 integer))
cn1: (((1 string-address)) <- ((new)) abc/)
cn1: (((2 integer)) <- ((find-next)) ((1 string-address)) ((/ literal)) ((0 literal)))
schedule: main
run: main 0: (((1 string-address)) <- ((new)) abc/)
run: main 0: 1000 => ((1 string-address))
mem: ((1 string-address)): 1 <= 1000
run: main 1: (((2 integer)) <- ((find-next)) ((1 string-address)) ((/ literal)) ((0 literal)))
mem: ((1 string-address)) => 1000
run: find-next/main 0: (((default-space space-address)) <- ((new)) ((space literal)) ((30 literal)))
run: find-next/main 0: 1005 => ((default-space space-address))
run: find-next/main 1: (((1 string-address)) <- ((next-input)))
arg: nil 0 (1000 #\/ 0)
run: find-next/main 1: 1000 => ((1 string-address))
mem: ((1 string-address)): 1007 <= 1000
run: find-next/main 2: (((2 character)) <- ((next-input)))
arg: nil 1 (1000 #\/ 0)
run: find-next/main 2: #\/ => ((2 character))
mem: ((2 character)): 1008 <= #\/
run: find-next/main 3: (((3 integer)) <- ((next-input)))
arg: nil 2 (1000 #\/ 0)
run: find-next/main 3: 0 => ((3 integer))
mem: ((3 integer)): 1009 <= 0
run: find-next/main 4: (((4 integer)) <- ((length)) ((1 string-address) (deref)))
array-len: ((1 string-address) (deref))
mem: ((1000 integer) (raw)) => 4
run: find-next/main 4: 4 => ((4 integer))
mem: ((4 integer)): 1010 <= 4
run: find-next/main 5: (((5 boolean)) <- ((greater-or-equal)) ((3 integer)) ((4 integer)))
mem: ((3 integer)) => 0
mem: ((4 integer)) => 4
run: find-next/main 5: nil => ((5 boolean))
mem: ((5 boolean)): 1011 <= nil
run: find-next/main 6: (((jump-if)) ((5 boolean)) ((5 offset)))
mem: ((5 boolean)) => nil
run: find-next/main 7: (((6 byte)) <- ((index)) ((1 string-address) (deref)) ((3 integer)))
mem: ((3 integer)) => 0
array-len: ((1000 string) (raw))
mem: ((1000 integer) (raw)) => 4
mem: ((1001 byte) (raw)) => a
run: find-next/main 7: #\a => ((6 byte))
mem: ((6 byte)): 1012 <= #\a
run: find-next/main 8: (((7 boolean)) <- ((equal)) ((6 byte)) ((2 character)))
mem: ((6 byte)) => a
mem: ((2 character)) => /
run: find-next/main 8: nil => ((7 boolean))
mem: ((7 boolean)): 1013 <= nil
run: find-next/main 9: (((jump-if)) ((7 boolean)) ((2 offset)))
mem: ((7 boolean)) => nil
run: find-next/main 10: (((3 integer)) <- ((add)) ((3 integer)) ((1 literal)))
mem: ((3 integer)) => 0
run: find-next/main 10: 1 => ((3 integer))
mem: ((3 integer)): 1009 <= 1
run: find-next/main 11: (((jump)) ((-7 offset)))
run: find-next/main 5: (((5 boolean)) <- ((greater-or-equal)) ((3 integer)) ((4 integer)))
mem: ((3 integer)) => 1
mem: ((4 integer)) => 4
run: find-next/main 5: nil => ((5 boolean))
mem: ((5 boolean)): 1011 <= nil
run: find-next/main 6: (((jump-if)) ((5 boolean)) ((5 offset)))
mem: ((5 boolean)) => nil
run: find-next/main 7: (((6 byte)) <- ((index)) ((1 string-address) (deref)) ((3 integer)))
mem: ((3 integer)) => 1
array-len: ((1000 string) (raw))
mem: ((1000 integer) (raw)) => 4
mem: ((1002 byte) (raw)) => b
run: find-next/main 7: #\b => ((6 byte))
mem: ((6 byte)): 1012 <= #\b
run: find-next/main 8: (((7 boolean)) <- ((equal)) ((6 byte)) ((2 character)))
mem: ((6 byte)) => b
mem: ((2 character)) => /
run: find-next/main 8: nil => ((7 boolean))
mem: ((7 boolean)): 1013 <= nil
run: find-next/main 9: (((jump-if)) ((7 boolean)) ((2 offset)))
mem: ((7 boolean)) => nil
run: find-next/main 10: (((3 integer)) <- ((add)) ((3 integer)) ((1 literal)))
mem: ((3 integer)) => 1
run: find-next/main 10: 2 => ((3 integer))
mem: ((3 integer)): 1009 <= 2
run: find-next/main 11: (((jump)) ((-7 offset)))
run: find-next/main 5: (((5 boolean)) <- ((greater-or-equal)) ((3 integer)) ((4 integer)))
mem: ((3 integer)) => 2
mem: ((4 integer)) => 4
run: find-next/main 5: nil => ((5 boolean))
mem: ((5 boolean)): 1011 <= nil
run: find-next/main 6: (((jump-if)) ((5 boolean)) ((5 offset)))
mem: ((5 boolean)) => nil
run: find-next/main 7: (((6 byte)) <- ((index)) ((1 string-address) (deref)) ((3 integer)))
mem: ((3 integer)) => 2
array-len: ((1000 string) (raw))
mem: ((1000 integer) (raw)) => 4
mem: ((1003 byte) (raw)) => c
run: find-next/main 7: #\c => ((6 byte))
mem: ((6 byte)): 1012 <= #\c
run: find-next/main 8: (((7 boolean)) <- ((equal)) ((6 byte)) ((2 character)))
mem: ((6 byte)) => c
mem: ((2 character)) => /
run: find-next/main 8: nil => ((7 boolean))
mem: ((7 boolean)): 1013 <= nil
run: find-next/main 9: (((jump-if)) ((7 boolean)) ((2 offset)))
mem: ((7 boolean)) => nil
run: find-next/main 10: (((3 integer)) <- ((add)) ((3 integer)) ((1 literal)))
mem: ((3 integer)) => 2
run: find-next/main 10: 3 => ((3 integer))
mem: ((3 integer)): 1009 <= 3
run: find-next/main 11: (((jump)) ((-7 offset)))
run: find-next/main 5: (((5 boolean)) <- ((greater-or-equal)) ((3 integer)) ((4 integer)))
mem: ((3 integer)) => 3
mem: ((4 integer)) => 4
run: find-next/main 5: nil => ((5 boolean))
mem: ((5 boolean)): 1011 <= nil
run: find-next/main 6: (((jump-if)) ((5 boolean)) ((5 offset)))
mem: ((5 boolean)) => nil
run: find-next/main 7: (((6 byte)) <- ((index)) ((1 string-address) (deref)) ((3 integer)))
mem: ((3 integer)) => 3
array-len: ((1000 string) (raw))
mem: ((1000 integer) (raw)) => 4
mem: ((1004 byte) (raw)) => /
run: find-next/main 7: #\/ => ((6 byte))
mem: ((6 byte)): 1012 <= #\/
run: find-next/main 8: (((7 boolean)) <- ((equal)) ((6 byte)) ((2 character)))
mem: ((6 byte)) => /
mem: ((2 character)) => /
run: find-next/main 8: t => ((7 boolean))
mem: ((7 boolean)): 1013 <= t
run: find-next/main 9: (((jump-if)) ((7 boolean)) ((2 offset)))
mem: ((7 boolean)) => t
run: find-next/main 12: (((reply)) ((3 integer)))
mem: ((3 integer)) => 3
run: main 1: 3 => ((2 integer))
mem: ((2 integer)): 2 <= 3
schedule: done with routine nil