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forward/backward constructors instead of auto-constructors

db4
Doug Coleman 2009-06-11 14:31:04 -05:00
parent 4d9af7317e
commit 74fbe979bb
2 changed files with 13 additions and 5 deletions
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9
basis/constructors/constructors-tests.factor
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@ -69,11 +69,18 @@ CONSTRUCTOR: inherit2 ( a -- obj ) ;
TUPLE: inherit3 hp max-hp ;
TUPLE: inherit4 < inherit3 ;
TUPLE: inherit5 < inherit3 ;
CONSTRUCTOR: inherit3 ( -- obj )
dup max-hp>> >>hp ;
AUTO-CONSTRUCTOR: inherit4 ( -- obj )
BACKWARD-CONSTRUCTOR: inherit4 ( -- obj )
10 >>max-hp ;
[ 10 ] [ <inherit4> hp>> ] unit-test
FORWARD-CONSTRUCTOR: inherit5 ( -- obj )
5 >>hp
10 >>max-hp ;
[ 5 ] [ <inherit5> hp>> ] unit-test

9
basis/constructors/constructors.factor
View File

@ -48,9 +48,10 @@ MACRO:: slots>constructor ( class slots -- quot )
class lookup-initializer
'[ @ _ execute( obj -- obj ) ] effect define-declared ;
:: define-auto-constructor ( constructor-word class effect def -- )
:: define-auto-constructor ( constructor-word class effect def reverse? -- )
constructor-word class effect def (define-constructor)
class superclasses [ lookup-initializer ] map sift reverse
class superclasses [ lookup-initializer ] map sift
reverse? [ reverse ] when
'[ @ _ [ execute( obj -- obj ) ] each ] effect define-declared ;
: scan-constructor ( -- class word )
@ -60,7 +61,7 @@ MACRO:: slots>constructor ( class slots -- quot )
scan-constructor complete-effect parse-definition ;
SYNTAX: CONSTRUCTOR: parse-constructor define-constructor ;
SYNTAX: AUTO-CONSTRUCTOR: parse-constructor define-auto-constructor ;
SYNTAX: FORWARD-CONSTRUCTOR: parse-constructor f define-auto-constructor ;
SYNTAX: BACKWARD-CONSTRUCTOR: parse-constructor t define-auto-constructor ;
"initializers" create-vocab drop