Replace getCurrentException

nimbus/nimbus.nim

@@ -183,10 +183,8 @@ proc process*() =
     while nimbus.state == Running:
       try:
         poll()
-      except CatchableError:
-        debug "Exception in poll()",
-          exc = getCurrentException().name,
-          err = getCurrentExceptionMsg()
+      except CatchableError as e:
+        debug "Exception in poll()", exc = e.name, err = e.msg
 
   # Stop loop
   waitFor stop()

nimbus/vm/interpreter_dispatch.nim

@@ -347,9 +347,8 @@ proc executeOpcodes(computation: BaseComputation) =
 
     try:
       computation.selectVM(fork)
-    except:
-      let msg = getCurrentExceptionMsg()
-      computation.setError(&"Opcode Dispatch Error msg={msg}, depth={computation.msg.depth}", true)
+    except CatchableError as e:
+      computation.setError(&"Opcode Dispatch Error msg={e.msg}, depth={computation.msg.depth}", true)
 
   computation.nextProc()
   if computation.isError():

nimbus/vm/precompiles.nim

@@ -358,14 +358,12 @@ proc execPrecompiles*(computation: BaseComputation, fork: Fork): bool {.inline.}
       of paEcMul: bn256ecMul(computation, fork)
       of paPairing: bn256ecPairing(computation, fork)
       of paBlake2bf: blake2bf(computation)
-    except OutOfGas:
-      let msg = getCurrentExceptionMsg()
+    except OutOfGas as e:
       # cannot use setError here, cyclic dependency
-      computation.error = Error(info: msg, burnsGas: true)
-    except CatchableError:
-      let msg = getCurrentExceptionMsg()
+      computation.error = Error(info: e.msg, burnsGas: true)
+    except CatchableError as e:
       if fork >= FKByzantium and precompile > paIdentity:
-        computation.error = Error(info: msg, burnsGas: true)
+        computation.error = Error(info: e.msg, burnsGas: true)
       else:
         # swallow any other precompiles errors
-        debug "execPrecompiles validation error", msg=msg
+        debug "execPrecompiles validation error", msg=e.msg