Add call stack to RuntimeException based errors

smnp/program/interpreter.py

@@ -1,5 +1,6 @@
 from smnp.ast.parser import parse
 from smnp.environment.factory import createEnvironment
+from smnp.error.runtime import RuntimeException
 from smnp.program.FileReader import readLines
 from smnp.runtime.evaluator import evaluate
 from smnp.token.tokenizer import tokenize
@@ -9,18 +10,22 @@ class Interpreter:
 
     @staticmethod
     def interpretFile(file, printTokens=False, printAst=False):
-        lines = readLines(file)
-
-        tokens = tokenize(lines)
-        if printTokens:
-            print(tokens)
-
-        ast = parse(tokens)
-        if printAst:
-            ast.print()
-
         environment = createEnvironment()
 
-        evaluate(ast, environment)
+        try:
+            lines = readLines(file)
 
-        return environment
+            tokens = tokenize(lines)
+            if printTokens:
+                print(tokens)
+
+            ast = parse(tokens)
+            if printAst:
+                ast.print()
+
+            evaluate(ast, environment)
+
+            return environment
+        except RuntimeException as e:
+            e.environment = environment
+            raise e