add assignment info class family and change how assignments are handled

pythonbpf/vmlinux_parser/assignment_info.py

@@ -0,0 +1,34 @@
+from enum import Enum, auto
+from typing import Any, Callable, Dict, List, Optional, TypedDict
+from dataclasses import dataclass
+
+from pythonbpf.vmlinux_parser.dependency_node import Field
+
+
+@dataclass
+class AssignmentType(Enum):
+    CONSTANT = auto()
+    STRUCT = auto()
+    ARRAY = auto()  # probably won't be used
+    FUNCTION_POINTER = auto()
+    POINTER = auto()  # again, probably won't be used
+
+@dataclass
+class FunctionSignature(TypedDict):
+    return_type: str
+    param_types: List[str]
+    varargs: bool
+
+
+# Thew name of the assignment will be in the dict that uses this class
+@dataclass
+class AssignmentInfo(TypedDict):
+    value_type: AssignmentType
+    python_type: type
+    value: Optional[Any]
+    pointer_level: Optional[int]
+    signature: Optional[FunctionSignature]  # For function pointers
+    # The key of the dict is the name of the field.
+    #   Value is a tuple that contains the global variable representing that field
+    #   along with all the information about that field as a Field type.
+    members: Optional[Dict[str, tuple[str, Field]]]  # For structs.