Add semantics analyzer function to process file components

compiler.py

@@ -1977,6 +1977,22 @@ class Context:
         raise KeyError
 
 
+def semantics_analyzer(file: File) -> Context:
+    screen: Screen | None = None
+    constraints: dict[str, int | float] = {}
+    animations: dict[str, ContextAnimation] = {}
+    graphs: list[ContextGraph] = []
+    for child in file.children:
+        if isinstance(child, Screen):
+            pass
+        elif isinstance(child, Constant):
+            pass
+        elif isinstance(child, Animation):
+            pass
+        elif isinstance(child, Graph):
+            pass
+
+
 if __name__ == '__main__':
     try:
         with open("example.graph", encoding='utf-8') as file: