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implemented a[^1] notation

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This commit is contained in:
Araq 2015-03-26 02:12:26 +01:00
commit 5d63ecb3a4
13 changed files with 209 additions and 50 deletions
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7
compiler/parampatterns.nim
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@ -131,11 +131,10 @@ proc semNodeKindConstraints*(p: PNode): PNode =
result.strVal.add(ppEof)
type
TSideEffectAnalysis = enum
TSideEffectAnalysis* = enum
seUnknown, seSideEffect, seNoSideEffect
proc checkForSideEffects(n: PNode): TSideEffectAnalysis =
# XXX is 'raise' a side effect?
proc checkForSideEffects*(n: PNode): TSideEffectAnalysis =
case n.kind
of nkCallKinds:
# only calls can produce side effects:
@ -162,6 +161,8 @@ proc checkForSideEffects(n: PNode): TSideEffectAnalysis =
# an atom cannot produce a side effect:
result = seNoSideEffect
else:
# assume no side effect:
result = seNoSideEffect
for i in 0 .. <n.len:
let ret = checkForSideEffects(n.sons[i])
if ret == seSideEffect: return ret