steve
/
factor
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix check-slice

db4
Slava Pestov 2009-03-12 20:37:26 -05:00
parent 7cefd48884
commit a6b57c495f
2 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
core/sequences/sequences-tests.factor
View File

@ -13,6 +13,10 @@ IN: sequences.tests
[ V{ 4 5 } ] [ { 1 2 3 4 5 } 2 tail-slice* >vector ] unit-test
[ V{ 3 4 } ] [ 2 4 1 10 dup <slice> subseq >vector ] unit-test
[ V{ 3 4 } ] [ 0 2 2 4 1 10 dup <slice> <slice> subseq >vector ] unit-test
[ 0 10 "hello" <slice> ] must-fail
[ -10 3 "hello" <slice> ] must-fail
[ 2 1 "hello" <slice> ] must-fail
[ "cba" ] [ "abcdef" 3 head-slice reverse ] unit-test
[ 5040 ] [ [ 1 2 3 4 5 6 7 ] 1 [ * ] reduce ] unit-test

5
core/sequences/sequences.factor
View File

@ -221,8 +221,9 @@ TUPLE: slice-error from to seq reason ;
: check-slice ( from to seq -- from to seq )
3dup
[ 2drop 0 < "start < 0" slice-error ]
[ nip length > "end > sequence" slice-error ]
[ drop > "start > end" slice-error ] 3tri ; inline
[ [ drop ] 2dip length > "end > sequence" slice-error ]
[ drop > "start > end" slice-error ]
3tri ; inline
: <slice> ( from to seq -- slice )
dup slice? [ collapse-slice ] when