X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.scl.runtime%2Fscl%2FDebug.scl;fp=bundles%2Forg.simantics.scl.runtime%2Fscl%2FDebug.scl;h=94112010044ae102b99fa350eb0e168ef6ffcf0d;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scl.runtime/scl/Debug.scl b/bundles/org.simantics.scl.runtime/scl/Debug.scl
new file mode 100644
index 000000000..941120100
--- /dev/null
+++ b/bundles/org.simantics.scl.runtime/scl/Debug.scl
@@ -0,0 +1,33 @@
+import "Prelude"
+import "JavaBuiltin" as Java
+
+importJava "java.lang.System" where
+    nanoTime :: () -> <Proc> Long
+
+"""
+Executes the expression and returns the result
+together with execution time in seconds.
+"""
+time :: (<e> a) -> <Proc,e> (a,Double)
+time f = do
+    beginTime = nanoTime ()
+    result = f
+    endTime = nanoTime ()
+    (result, Java.l2d (endTime-beginTime) * 1e-9)
+
+"""
+Prints the given text and returns
+the second parameter.
+"""
+trace :: String -> a -> a
+trace text value = runProc do
+    printString text
+    value
+
+"""
+Prints the given value and returns
+the second parameter.
+"""
+traceShow :: Show a => a -> b -> b
+traceShow p v = trace (show p) v
+