Enable importing other source files

smnp/runtime/evaluator.py

@@ -1,6 +1,7 @@
 from smnp.ast.node.block import BlockNode
 from smnp.ast.node.extend import ExtendNode
 from smnp.ast.node.function import FunctionDefinitionNode
+from smnp.ast.node.imports import ImportNode
 from smnp.ast.node.program import Program
 from smnp.error.runtime import RuntimeException
 from smnp.type.model import Type
@@ -71,8 +72,10 @@ def evaluate(node, environment):
     from smnp.runtime.evaluators.function import FunctionDefinitionEvaluator
     from smnp.runtime.evaluators.extend import ExtendEvaluator
     from smnp.runtime.evaluators.block import BlockEvaluator
+    from smnp.runtime.evaluators.imports import ImportEvaluator
     result = Evaluator.oneOf(
         Evaluator.forNodes(ProgramEvaluator.evaluate, Program),
+        Evaluator.forNodes(ImportEvaluator.evaluate, ImportNode),
         Evaluator.forNodes(FunctionDefinitionEvaluator.evaluate, FunctionDefinitionNode),
         Evaluator.forNodes(ExtendEvaluator.evaluate, ExtendNode),
         Evaluator.forNodes(BlockEvaluator.evaluate, BlockNode),

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)