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skip bounds checking in danger mode

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This commit is contained in:
Joseph Montanaro
2021-07-29 19:34:56 -07:00
parent 7301597789
commit 29e3e70712
1 changed files with 15 additions and 10 deletions
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5
fixedseq.nim
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@@ -26,24 +26,28 @@ proc `$`*(s: FixedSeq): string =
proc `[]`*(s: FixedSeq, i: Natural): FixedSeq.Contents = proc `[]`*(s: FixedSeq, i: Natural): FixedSeq.Contents =
when not defined(danger):
if i > s.last: if i > s.last:
raise newException(IndexDefect, "index " & $i & " is out of bounds.") raise newException(IndexDefect, "index " & $i & " is out of bounds.")
s.data[i] s.data[i]
proc `[]`*(s: var FixedSeq, i: Natural): var FixedSeq.Contents = proc `[]`*(s: var FixedSeq, i: Natural): var FixedSeq.Contents =
when not defined(danger):
if i > s.last: if i > s.last:
raise newException(IndexDefect, "index " & $i & " is out of bounds.") raise newException(IndexDefect, "index " & $i & " is out of bounds.")
s.data[i] s.data[i]
proc `[]`*(s: FixedSeq, i: BackwardsIndex): auto = proc `[]`*(s: FixedSeq, i: BackwardsIndex): auto =
when not defined(danger):
if s.last == -1: if s.last == -1:
raise newException(IndexDefect, "index out of bounds, the container is empty.") # matching stdlib again raise newException(IndexDefect, "index out of bounds, the container is empty.") # matching stdlib again
s.data[s.last - typeof(s.last)(i) + 1] s.data[s.last - typeof(s.last)(i) + 1]
proc `[]=`*(s: var FixedSeq, i: Natural, v: FixedSeq.Contents) = proc `[]=`*(s: var FixedSeq, i: Natural, v: FixedSeq.Contents) =
when not defined(danger):
if i > s.last: if i > s.last:
raise newException(IndexDefect, "index " & $i & " is out of bounds.") raise newException(IndexDefect, "index " & $i & " is out of bounds.")
s.data[i] = v s.data[i] = v
@@ -94,6 +98,7 @@ proc insert*(s: var FixedSeq, v: FixedSeq.Contents, idx: Natural = 0) =
proc delete*(s: var FixedSeq, idx: Natural) = proc delete*(s: var FixedSeq, idx: Natural) =
when not defined(danger):
if idx > s.last: if idx > s.last:
raise newException(IndexDefect, "index " & $idx & " is out of bounds.") raise newException(IndexDefect, "index " & $idx & " is out of bounds.")
s.data[idx] = -1 s.data[idx] = -1