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implements -d:nimdiff switch for seeing generated C code diffs

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This commit is contained in:
Andreas Rumpf 2016-12-06 10:05:22 +01:00
commit 0d6f4f1bb1
1 changed files with 7 additions and 1 deletions
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8
compiler/cgen.nim
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@ -1245,7 +1245,13 @@ proc shouldRecompile(code: Rope, cfile: string): bool =
result = true
if optForceFullMake notin gGlobalOptions:
var objFile = toObjFile(cfile)
if writeRopeIfNotEqual(code, cfile): return
if not equalsFile(code, cfile):
if isDefined("nimdiff"):
copyFile(cfile, cfile & ".backup")
echo "diff ", cfile, ".backup ", cfile
writeRope(code, cfile)
return
if existsFile(objFile) and os.fileNewer(objFile, cfile): result = false
else:
writeRope(code, cfile)