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store struct class in struct-array

db4
Joe Groff 2009-08-26 13:13:19 -05:00
parent 5a298a00fd
commit 4a9f885ac9
1 changed files with 14 additions and 7 deletions
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21
basis/struct-arrays/struct-arrays.factor
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@ -4,10 +4,14 @@ USING: accessors alien alien.c-types byte-arrays kernel libc
math sequences sequences.private ;
IN: struct-arrays
: c-type-struct-class ( c-type -- class )
c-type boxed-class>> ; foldable
TUPLE: struct-array
{ underlying c-ptr read-only }
{ length array-capacity read-only }
{ element-size array-capacity read-only } ;
{ element-size array-capacity read-only }
{ class read-only } ;
M: struct-array length length>> ;
M: struct-array byte-length [ length>> ] [ element-size>> ] bi * ;
@ -19,25 +23,28 @@ M: struct-array set-nth-unsafe
[ nth-unsafe swap ] [ element-size>> ] bi memcpy ;
M: struct-array new-sequence
element-size>> [ * <byte-array> ] 2keep struct-array boa ; inline
[ element-size>> [ * <byte-array> ] 2keep ]
[ class>> ] bi struct-array boa ; inline
M: struct-array resize ( n seq -- newseq )
[ [ element-size>> * ] [ underlying>> ] bi resize ] [ element-size>> ] 2bi
[ [ element-size>> * ] [ underlying>> ] bi resize ]
[ [ element-size>> ] [ class>> ] bi ] 2bi
struct-array boa ;
: <struct-array> ( length c-type -- struct-array )
heap-size [ * <byte-array> ] 2keep struct-array boa ; inline
[ heap-size [ * <byte-array> ] 2keep ]
[ c-type-struct-class ] bi struct-array boa ; inline
ERROR: bad-byte-array-length byte-array ;
: byte-array>struct-array ( byte-array c-type -- struct-array )
heap-size [
[ heap-size [
[ dup length ] dip /mod 0 =
[ drop bad-byte-array-length ] unless
] keep struct-array boa ; inline
] keep ] [ c-type-struct-class ] bi struct-array boa ; inline
: <direct-struct-array> ( alien length c-type -- struct-array )
heap-size struct-array boa ; inline
[ heap-size ] [ c-type-struct-class ] bi struct-array boa ; inline
: malloc-struct-array ( length c-type -- struct-array )
[ heap-size calloc ] 2keep <direct-struct-array> ; inline