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term rewriting macros fully implemented; still buggy

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This commit is contained in:
Araq 2012-09-03 00:55:44 +02:00
commit af7c92c003
22 changed files with 676 additions and 138 deletions
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12
compiler/semfold.nim
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@ -196,8 +196,7 @@ proc getIntervalType*(m: TMagic, n: PNode): PType =
let x = b.intVal|+|1
if (x and -x) == x and x >= 0:
result = makeRange(a.typ, 0, b.intVal)
of mModI, mModI64, mModU:
# so ... if you ever wondered about modulo's signedness; this defines it:
of mModU:
let a = n.sons[1]
let b = n.sons[2]
if b.kind in {nkIntLit..nkUInt64Lit}:
@ -205,6 +204,15 @@ proc getIntervalType*(m: TMagic, n: PNode): PType =
result = makeRange(a.typ, 0, b.intVal-1)
else:
result = makeRange(a.typ, b.intVal+1, 0)
of mModI, mModI64:
# so ... if you ever wondered about modulo's signedness; this defines it:
let a = n.sons[1]
let b = n.sons[2]
if b.kind in {nkIntLit..nkUInt64Lit}:
if b.intVal >= 0:
result = makeRange(a.typ, -(b.intVal-1), b.intVal-1)
else:
result = makeRange(a.typ, b.intVal+1, -(b.intVal+1))
of mDivI, mDivI64, mDivU:
binaryOp(`|div|`)
of mMinI, mMinI64: