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literals: Improve ${ word

db4
Slava Pestov 2009-05-05 15:54:49 -05:00
parent 764ee52cde
commit 8133436d6d
2 changed files with 20 additions and 5 deletions
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6
basis/literals/literals-tests.factor Normal file → Executable file
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@ -20,8 +20,10 @@ IN: literals.tests
[ { 1.0 { 0.5 1.5 } 4.0 } ] [ { 1.0 { $[ 1.0 2.0 / ] 1.5 } $[ 2.0 2.0 * ] } ] unit-test
<<
CONSTANT: constant-a 3
>>
[ { 3 10 "ftw" } ] [ ${ constant-a 10 "ftw" } ] unit-test
: sixty-nine ( -- a b ) 6 9 ;
[ { 6 9 } ] [ ${ sixty-nine } ] unit-test

19
basis/literals/literals.factor Normal file → Executable file
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@ -1,8 +1,21 @@
! (c) Joe Groff, see license for details
USING: accessors continuations kernel parser words quotations
combinators.smart vectors sequences ;
combinators.smart vectors sequences fry ;
IN: literals
SYNTAX: $ scan-word [ def>> call ] curry with-datastack >vector ;
<PRIVATE
! Use def>> call so that CONSTANT:s defined in the same file can
! be called
: expand-literal ( seq obj -- seq' )
'[ _ dup word? [ def>> call ] when ] with-datastack ;
: expand-literals ( seq -- seq' )
[ [ { } ] dip expand-literal ] map concat ;
PRIVATE>
SYNTAX: $ scan-word expand-literal >vector ;
SYNTAX: $[ parse-quotation with-datastack >vector ;
SYNTAX: ${ \ } [ [ ?execute ] { } map-as ] parse-literal ;
SYNTAX: ${ \ } [ expand-literals ] parse-literal ;