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60 lines
2.1 KiB
Smalltalk
60 lines
2.1 KiB
Smalltalk
FileStream fileIn: 'types.st'.
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FileStream fileIn: 'printer.st'.
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Object subclass: Core [
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Ns := Dictionary new.
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Core class >> Ns [ ^Ns ]
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Core class >> coerce: block [
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block value ifTrue: [ ^MALObject True ] ifFalse: [ ^MALObject False ]
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]
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Core class >> printedArgs: args readable: readable sep: sep [
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| items |
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items := args collect:
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[ :arg | Printer prStr: arg printReadably: readable ].
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"NOTE: {} join returns the unchanged array"
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items isEmpty ifTrue: [ ^'' ] ifFalse: [ ^items join: sep ]
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]
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]
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Core Ns at: #+ put:
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[ :args | MALNumber new: args first value + args second value ].
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Core Ns at: #- put:
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[ :args | MALNumber new: args first value - args second value ].
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Core Ns at: #* put:
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[ :args | MALNumber new: args first value * args second value ].
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Core Ns at: #/ put:
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[ :args | MALNumber new: args first value // args second value ].
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Core Ns at: #'pr-str' put:
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[ :args | MALString new: (Core printedArgs: args readable: true sep: ' ') ].
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Core Ns at: #str put:
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[ :args | MALString new: (Core printedArgs: args readable: false sep: '') ].
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Core Ns at: #prn put:
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[ :args | (Core printedArgs: args readable: true sep: ' ') displayNl.
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MALObject Nil ].
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Core Ns at: #println put:
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[ :args | (Core printedArgs: args readable: false sep: ' ') displayNl.
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MALObject Nil ].
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Core Ns at: #list put: [ :args | MALList new: (OrderedCollection from: args) ].
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Core Ns at: #'list?' put:
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[ :args | Core coerce: [ args first type = #list ] ].
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Core Ns at: #'empty?' put:
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[ :args | Core coerce: [ args first value isEmpty ] ].
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Core Ns at: #count put:
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[ :args | MALNumber new: args first value size ].
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Core Ns at: #= put:
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[ :args | Core coerce: [ args first = args second ] ].
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Core Ns at: #< put:
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[ :args | Core coerce: [ args first value < args second value ] ].
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Core Ns at: #<= put:
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[ :args | Core coerce: [ args first value <= args second value ] ].
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Core Ns at: #> put:
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[ :args | Core coerce: [ args first value > args second value ] ].
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Core Ns at: #>= put:
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[ :args | Core coerce: [ args first value >= args second value ] ].
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