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test-p10.soar
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test-p10.soar
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setup {
source common.soar
sp {apply*init*add-state-name
(state <s> ^operator.name init)
-->
(<s> ^name p10)
}
sp {propose*return-nil
"Special case for empty list"
(state <s> ^name p10
^input nil)
-->
(<s> ^operator.name p10-return-nil)
}
sp {apply*return-nil
(state <s> ^operator.name p10-return-nil)
-->
(<s> ^result.head nil)
}
sp {propose*zip
"First we zip the list with a shifted version of itself. Then we can just
iterate over the pairs. Anywhere where the pairs differ, we have to encode."
(state <s> ^name p10
^input <first>
-^zipped)
(<first> ^next <second>)
-->
(<s> ^operator <o>)
(<o> ^name bebot*list*zip
^first <first>
^second <second>
^return-to zipped)
}
sp {p10-func*elaborate*info
"Add info about this operator to the lib*library structure on the
top state."
(state <s> ^superstate nil
^bebot*library.operators <ops>)
-->
(<ops> ^p10-func <args>)
(<args> ^default <def>
^required <req>)
(<def> ^return-to result)
(<req> ^value nil
^previous nil)
}
sp {p10*propose*fold-left
(state <s> ^name p10
^zipped <zipped>
-^result <result>)
-->
(<s> ^operator <o>)
(<o> ^name bebot*list*fold-left
^func p10-func
^head <zipped>
^initial-value <builder>)
(<builder> ^head nil ^end nil ^count 0)
}
sp {apply*p10-func*duplicate*value
"If the pair in the zipped list are the same, increment the counter
and move along"
(state <s> ^operator <o>)
(<o> ^name p10-func
^value <value>
^previous <builder>)
(<value> ^first <same>
^second <same>)
(<builder> ^head <head>
^end <end>
^count <count>)
-->
(<s> ^result <new-builder>)
(<new-builder> ^head <head>
^end <end>
^count (+ <count> 1))
}
sp {p10-func*propose*encode
"We're in a sub-state which means we hit a pair in the zip list that
are unequal. Propose encoding the count/value. Have to do this with
with an operator for o-support..."
(state <s> ^name p10-func
-^encoded)
-->
(<s> ^operator.name p10-func*encode)
}
sp {p10-func*apply*encode
(state <s> ^operator.name p10-func*encode
^value.first <value>
^previous.count <count>)
-->
(<s> ^encoded <encoding>)
(<encoding> ^value <value>
^count (+ <count> 1))
}
sp {p10-func*propose*add
"Now that the count/value is encoded, use the builder to add it to the end
of the result list"
(state <s> ^name p10-func
^previous <builder>
^encoded <encoding>)
-->
(<s> ^operator <o>)
(<o> ^name bebot*list*builder*add
^this <builder>
^value <encoding>)
}
sp {p10-func*apply*add-return
"HACK: At the same time that the list is extended, reset the counter and return
the result back up to fold-left"
(state <s> ^operator <o>
^superstate <ss>)
(<o> ^name bebot*list*builder*add
^this <builder>)
(<builder> ^count <count>)
-->
(<builder> ^count <count> -
^count 0)
(<ss> ^result <builder>)
}
}
test "can run-length encode an empty list" {
sp {apply*init
(state <s> ^operator.name init)
-->
(<s> ^input nil)
}
sp {pass
(state <s> ^name p10
^result.head nil)
-->
(pass)
}
}
test "can run-length encode a list with a single value" {
sp {apply*init
(state <s> ^operator.name init)
-->
(<s> ^input (list a a a a a a a))
}
sp {pass
(state <s> ^name p10
^result.head <r0>)
(<r0> ^next nil ^value (^value a ^count 7))
-->
(pass)
}
}
test "can run-length encode a list" {
sp {apply*init
(state <s> ^operator.name init)
-->
(<s> ^input (list a a a a b c c a a d e e e e))
}
sp {pass
(state <s> ^name p10
^result.head <r0>)
(<r0> ^next <r1> ^value (^value a ^count 4))
(<r1> ^next <r2> ^value (^value b ^count 1))
(<r2> ^next <r3> ^value (^value c ^count 2))
(<r3> ^next <r4> ^value (^value a ^count 2))
(<r4> ^next <r5> ^value (^value d ^count 1))
(<r5> ^next nil ^value (^value e ^count 4))
-->
(pass)
}
}