gistfile1.diff

commit d6df5ee13b8c090b3e51b73f0083c77047ffef25
Author: Grzegorz Adam Hankiewicz <gradha@imap.cc>
Date:   Thu Dec 19 11:54:46 2013 +0100

    Attempt to make elapsed statement macro returning a value

diff --git a/lib/pure/times.nim b/lib/pure/times.nim
index 6483a42..1e31207 100644
--- a/lib/pure/times.nim
+++ b/lib/pure/times.nim
@@ -717,6 +717,23 @@ proc format*(info: TTimeInfo, f: string): string =
 
 {.pop.}
 
+template measureElapsed(timingProc: expr, body: stmt): expr {.immediate.} =
+  var result = timingProc()
+  try:
+    body
+  finally:
+    let t2 = timingProc()
+    result = t2 - result
+
+#template measureElapsed(timingProc, v: expr, body: stmt): stmt {.immediate.} =
+#  block:
+#    let t1: type(v) = timingProc()
+#    try:
+#      body
+#    finally:
+#      let t2: type(v) = timingProc()
+#      v = (t2 - t1)
+
 when isMainModule:
   # $ date --date='@2147483647'
   # Tue 19 Jan 03:14:07 GMT 2038
@@ -747,3 +764,14 @@ when isMainModule:
   # Interval tests
   assert((t4 - initInterval(years = 2)).format("yyyy") == "1995")
   assert((t4 - initInterval(years = 7, minutes = 34, seconds = 24)).format("yyyy mm ss") == "1990 24 10")
+
+  let ttt = measureElapsed(epochTime):
+    echo "Hey there"
+  #var cpuDiff, timeDiff: float
+
+  #measureElapsed(cpuTime, cpuDiff):
+  #  echo "Hey there"
+  #echo repr(cpuDiff)
+  #measureElapsed(epochTime, timeDiff):
+  #  echo "Hey there"
+  #echo repr(timeDiff)