diff options
Diffstat (limited to 'src/interp/g-util.boot')
| -rw-r--r-- | src/interp/g-util.boot | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/interp/g-util.boot b/src/interp/g-util.boot index f06675df..155d7985 100644 --- a/src/interp/g-util.boot +++ b/src/interp/g-util.boot @@ -40,12 +40,17 @@ namespace BOOT module g_-util where getTypeOfSyntax: %Form -> %Mode pairList: (%List,%List) -> %List + mkList: %List -> %List ++ $interpOnly := false --% Utility Functions of General Use +mkList u == + u => ["LIST",:u] + nil + ELEMN(x, n, d) == null x => d n = 1 => car x @@ -57,6 +62,25 @@ PPtoFile(x, fname) == SHUT stream x +ScanOrPairVec(f, ob) == + $seen: local := MAKE_-HASHTABLE 'EQ + + CATCH('ScanOrPairVecAnswer, ScanOrInner(f, ob)) where + ScanOrInner(f, ob) == + HGET($seen, ob) => nil + PAIRP ob => + HPUT($seen, ob, true) + ScanOrInner(f, QCAR ob) + ScanOrInner(f, QCDR ob) + nil + VECP ob => + HPUT($seen, ob, true) + for i in 0..#ob-1 repeat ScanOrInner(f, ob.i) + nil + FUNCALL(f, ob) => + THROW('ScanOrPairVecAnswer, true) + nil + ++ Query properties for an entity in a given environment. get: (%Thing,%Symbol,%List) -> %Thing |