From 29e3e7071218293c952afc8d7b74030b98287ef9 Mon Sep 17 00:00:00 2001
From: Joseph Montanaro <jfmonty2@gmail.com>
Date: Thu, 29 Jul 2021 19:34:56 -0700
Subject: [PATCH] skip bounds checking in danger mode

---
 fixedseq.nim | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/fixedseq.nim b/fixedseq.nim
index 4bdc88c..879c5e3 100644
--- a/fixedseq.nim
+++ b/fixedseq.nim
@@ -26,26 +26,30 @@ proc `$`*(s: FixedSeq): string =
 
 
 proc `[]`*(s: FixedSeq, i: Natural): FixedSeq.Contents =
-  if i > s.last:
-    raise newException(IndexDefect, "index " & $i & " is out of bounds.")
+  when not defined(danger):
+    if i > s.last:
+      raise newException(IndexDefect, "index " & $i & " is out of bounds.")
   s.data[i]
 
 
 proc `[]`*(s: var FixedSeq, i: Natural): var FixedSeq.Contents =
-  if i > s.last:
-    raise newException(IndexDefect, "index " & $i & " is out of bounds.")
+  when not defined(danger):
+    if i > s.last:
+      raise newException(IndexDefect, "index " & $i & " is out of bounds.")
   s.data[i]
 
 
 proc `[]`*(s: FixedSeq, i: BackwardsIndex): auto =
-  if s.last == -1:
-    raise newException(IndexDefect, "index out of bounds, the container is empty.") # matching stdlib again
+  when not defined(danger):
+    if s.last == -1:
+      raise newException(IndexDefect, "index out of bounds, the container is empty.") # matching stdlib again
   s.data[s.last - typeof(s.last)(i) + 1]
 
 
 proc `[]=`*(s: var FixedSeq, i: Natural, v: FixedSeq.Contents) =
-  if i > s.last:
-    raise newException(IndexDefect, "index " & $i & " is out of bounds.")
+  when not defined(danger):
+    if i > s.last:
+      raise newException(IndexDefect, "index " & $i & " is out of bounds.")
   s.data[i] = v
 
 
@@ -94,8 +98,9 @@ proc insert*(s: var FixedSeq, v: FixedSeq.Contents, idx: Natural = 0) =
 
 
 proc delete*(s: var FixedSeq, idx: Natural) =
-  if idx > s.last:
-    raise newException(IndexDefect, "index " & $idx & " is out of bounds.")
+  when not defined(danger):
+    if idx > s.last:
+      raise newException(IndexDefect, "index " & $idx & " is out of bounds.")
   s.data[idx] = -1
   dec s.last
   for i in typeof(s.last)(idx) .. s.last: