Reformat evaluator #1

smnp/runtime/evaluators/string.py

@@ -0,0 +1,28 @@
+import re
+
+from smnp.error.runtime import RuntimeException
+from smnp.type.model import Type
+from smnp.type.value import Value
+
+
+def evaluateString(string, environment):
+    value = interpolate(string, environment)
+    return Value(Type.STRING, value)
+
+
+def interpolate(string, environment):
+    interpolated = string.value
+    for scope in reversed(environment.scopes):
+        for name, value in scope.items():
+            interpolated = interpolated.replace('{' + name + '}', value.stringify())
+
+    nonMatchedVariables = re.findall(r"\{\w+\}", interpolated)
+    if len(nonMatchedVariables) > 0:
+        raise RuntimeException(f"Variable '{nonMatchedVariables[0][1:len(nonMatchedVariables[0])-1]}' is not declared",
+                               (string.pos[0], string.pos[1] + string.value.find(nonMatchedVariables[0])+1))
+
+    return interpolated
+
+# or scope in reversed(environment.scopes):
+#         for k, v in scope.items():
+#             value = value.replace('{' + k + '}', v) #TODO: poprawic