Enable importing other source files

smnp/runtime/evaluators/imports.py

@@ -0,0 +1,19 @@
+from smnp.ast.node.none import NoneNode
+from smnp.program.interpreter import Interpreter
+from smnp.runtime.evaluator import Evaluator
+
+
+class ImportEvaluator(Evaluator):
+
+    @classmethod
+    def evaluator(cls, node, environment):
+        if type(node.type) == NoneNode:
+            cls._evaluateCodeImport(node, environment)
+        else:
+            raise RuntimeError("Importing types is not implemented yet")
+
+    @classmethod
+    def _evaluateCodeImport(cls, node, environment):
+        source = node.source
+        newEnvironment = Interpreter.interpretFile(source.value)
+        environment.extend(newEnvironment)