90 lines
2.0 KiB
Factor
90 lines
2.0 KiB
Factor
! Copyright (C) 2011 Alex Vondrak.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors fry generic generic.parser generic.standard
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kernel present quotations sequences slots words
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graphviz
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graphviz.attributes
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;
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IN: graphviz.notation
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<<
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<PRIVATE
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! GENERIC#: =attr 1 ( graphviz-obj val -- graphviz-obj' )
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! M: edge/node =attr
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! present over attributes>> attr<< ;
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! M: sub/graph =attr
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! <graph-attributes> swap present >>attr add ;
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! M: edge/node/graph-attributes =attr
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! present >>attr ;
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: =attr-generic ( name -- generic )
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"=" prepend "graphviz.notation" 2dup lookup-word
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[ 2nip ] [
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create-word dup
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1 <standard-combination>
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( graphviz-obj val -- graphviz-obj' )
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define-generic
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] if* ;
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: =attr-method ( class name -- method name )
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[ =attr-generic create-method-in ] keep ;
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: sub/graph-=attr ( attr -- )
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[ graph subgraph ] dip [
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=attr-method
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setter-word 1quotation
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'[ <graph-attributes> swap present @ add ]
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define
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] curry bi@ ;
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: edge/node-=attr ( class attr -- )
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=attr-method
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writer-word 1quotation '[ present over attributes>> @ ]
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define ;
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: graph-obj-=attr ( class attr -- )
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over graph =
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[ nip sub/graph-=attr ]
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[ edge/node-=attr ] if ;
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: attrs-obj-=attr ( class attr -- )
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=attr-method
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setter-word 1quotation '[ present @ ]
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define ;
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: define-=attrs ( base-class attrs-class -- )
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dup "slots" word-prop [
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name>>
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[ attrs-obj-=attr ] keep
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graph-obj-=attr
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] 2with each ;
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PRIVATE>
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graph graph-attributes define-=attrs
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edge edge-attributes define-=attrs
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node node-attributes define-=attrs
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>>
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ALIAS: -> add-edge
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ALIAS: -- add-edge
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ALIAS: ~-> add-path
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ALIAS: ~-- add-path
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ALIAS: [graph <graph-attributes>
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ALIAS: [node <node-attributes>
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ALIAS: [edge <edge-attributes>
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ALIAS: [add-node <node>
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ALIAS: [add-edge <edge>
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ALIAS: [-> <edge>
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ALIAS: [-- <edge>
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ALIAS: ]; add
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! Can't really do add-path[ & add-nodes[ this way, since they
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! involve multiple objects.
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