Update lvcnrcheck with pass/fail information

bin/lvcnrcheck

@@ -51,6 +51,8 @@ else:
 
 def checkField(sim, field):
 
+    
+
     # Check validity of field against specification class `field`
     valid = field.valid(sim)
     msg = valid.msg if valid.msg is not None else ''
@@ -59,7 +61,7 @@ def checkField(sim, field):
     if isinstance(valid, err.Missing):
         print FIELD_INVALID.format(
             valid.name, field.name, 'undefined', msg).strip('')
-        return
+        return 1
 
     # Condition on being an attribute
     isAttribute = not isinstance(
@@ -69,11 +71,16 @@ def checkField(sim, field):
     value = sim.att(field.name) if isAttribute else type(sim[field.name])
     if isinstance(valid, err.Valid):
         print FIELD_VALID.format(valid.name, field.name, value, msg).strip()
+        return 0
     else:
         print FIELD_INVALID.format(valid.name, field.name, value, msg).strip()
+        return 1
 
 if __name__ == '__main__':
 
+    # Initialise checkInt. checkInt = 0 for pass and >0 for fail.
+    checkInt = 0
+
     sim = Sim(args.file)
 
     # Format 1
@@ -83,16 +90,16 @@ if __name__ == '__main__':
         print("## {0:s}\n".format(groupKey))
 
         for fieldKey, field in group.items():
-            checkField(sim, field())
+            checkInt += checkField(sim, field())
 
         print('')
-
+        
     if args.format > 1:
         # Format 2
         print('# Format 2\n')
 
         for fieldKey, field in format2.items():
-            checkField(sim, field())
+            checkInt += checkField(sim, field())
 
         print('')
 
@@ -101,7 +108,7 @@ if __name__ == '__main__':
         print('# Format 3\n')
 
         for fieldKey, field in format3.items():
-            checkField(sim, field())
+            checkInt += checkField(sim, field())
 
         print('')
 
@@ -110,7 +117,7 @@ if __name__ == '__main__':
     if len(phaseModes) > 0:
         print('# Phase Modes\n')
     for phaseMode in phaseModes:
-        checkField(sim, phaseMode)
+        checkInt += checkField(sim, phaseMode)
 
     print ('')
 
@@ -119,4 +126,10 @@ if __name__ == '__main__':
     if len(ampModes) > 0:
         print('# Amplitude Modes\n')
     for ampMode in ampModes:
-        checkField(sim, ampMode)
+        checkInt += checkField(sim, ampMode)
+        
+    # report back if the simulation has passed or failed the check
+    if checkInt == 0:
+        print('pass')
+    else:
+        print('fail')