refactor: consolidate tracers module types

openfisca_core/tracers/__init__.py

@@ -21,7 +21,6 @@
 #
 # See: https://www.python.org/dev/peps/pep-0008/#imports
 
-from . import types
 from .computation_log import ComputationLog
 from .flat_trace import FlatTrace
 from .full_tracer import FullTracer
@@ -38,5 +37,4 @@
     "SimpleTracer",
     "TraceNode",
     "TracingParameterNodeAtInstant",
-    "types",
 ]

openfisca_core/tracers/computation_log.py

@@ -4,10 +4,9 @@
 
 import numpy
 
+from openfisca_core import types as t
 from openfisca_core.indexed_enums import EnumArray
 
-from . import types as t
-
 
 class ComputationLog:
     _full_tracer: t.FullTracer

openfisca_core/tracers/flat_trace.py

@@ -2,10 +2,9 @@
 
 import numpy
 
+from openfisca_core import types as t
 from openfisca_core.indexed_enums import EnumArray
 
-from . import types as t
-
 
 class FlatTrace:
     _full_tracer: t.FullTracer

openfisca_core/tracers/full_tracer.py

@@ -5,7 +5,8 @@
 import sys
 import time
 
-from . import types as t
+from openfisca_core import types as t
+
 from .computation_log import ComputationLog
 from .flat_trace import FlatTrace
 from .performance_log import PerformanceLog

openfisca_core/tracers/simple_tracer.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from . import types as t
+from openfisca_core import types as t
 
 
 class SimpleTracer:

openfisca_core/tracers/trace_node.py

@@ -2,7 +2,7 @@
 
 import dataclasses
 
-from . import types as t
+from openfisca_core import types as t
 
 
 @dataclasses.dataclass

openfisca_core/types.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from collections.abc import Iterable, Sequence, Sized
+from collections.abc import Iterable, Iterator, Sequence, Sized
 from numpy.typing import DTypeLike, NDArray
 from typing import NewType, TypeVar, Union
 from typing_extensions import Protocol, Required, Self, TypeAlias, TypedDict
@@ -309,6 +309,97 @@ def get_variable(
     ) -> None | Variable: ...
 
 
+# Tracers
+
+#: A type representing a unit time.
+Time: TypeAlias = float
+
+#: A type representing a mapping of flat traces.
+FlatNodeMap: TypeAlias = dict["NodeKey", "FlatTraceMap"]
+
+#: A type representing a mapping of serialized traces.
+SerializedNodeMap: TypeAlias = dict["NodeKey", "SerializedTraceMap"]
+
+#: Key of a trace.
+NodeKey = NewType("NodeKey", str)
+
+
+class FlatTraceMap(TypedDict, total=True):
+    dependencies: list[NodeKey]
+    parameters: dict[NodeKey, None | ArrayLike[object]]
+    value: None | VarArray
+    calculation_time: Time
+    formula_time: Time
+
+
+class SerializedTraceMap(TypedDict, total=True):
+    dependencies: list[NodeKey]
+    parameters: dict[NodeKey, None | ArrayLike[object]]
+    value: None | ArrayLike[object]
+    calculation_time: Time
+    formula_time: Time
+
+
+class SimpleTraceMap(TypedDict, total=True):
+    name: VariableName
+    period: int | Period
+
+
+class ComputationLog(Protocol):
+    def print_log(self, __aggregate: bool = ..., __max_depth: int = ..., /) -> None: ...
+
+
+class FlatTrace(Protocol):
+    def get_trace(self, /) -> FlatNodeMap: ...
+    def get_serialized_trace(self, /) -> SerializedNodeMap: ...
+
+
+class FullTracer(Protocol):
+    @property
+    def trees(self, /) -> list[TraceNode]: ...
+    def browse_trace(self, /) -> Iterator[TraceNode]: ...
+    def get_nb_requests(self, __name: VariableName, /) -> int: ...
+
+
+class PerformanceLog(Protocol):
+    def generate_graph(self, __dir_path: str, /) -> None: ...
+    def generate_performance_tables(self, __dir_path: str, /) -> None: ...
+
+
+class SimpleTracer(Protocol):
+    @property
+    def stack(self, /) -> SimpleStack: ...
+    def record_calculation_start(
+        self, __name: VariableName, __period: PeriodInt | Period, /
+    ) -> None: ...
+    def record_calculation_end(self, /) -> None: ...
+
+
+class TraceNode(Protocol):
+    @property
+    def children(self, /) -> list[TraceNode]: ...
+    @property
+    def end(self, /) -> Time: ...
+    @property
+    def name(self, /) -> str: ...
+    @property
+    def parameters(self, /) -> list[TraceNode]: ...
+    @property
+    def parent(self, /) -> None | TraceNode: ...
+    @property
+    def period(self, /) -> PeriodInt | Period: ...
+    @property
+    def start(self, /) -> Time: ...
+    @property
+    def value(self, /) -> None | VarArray: ...
+    def calculation_time(self, *, __round: bool = ...) -> Time: ...
+    def formula_time(self, /) -> Time: ...
+    def append_child(self, __node: TraceNode, /) -> None: ...
+
+
+#: A stack of simple traces.
+SimpleStack: TypeAlias = list[SimpleTraceMap]
+
 # Variables
 
 #: For example "salary".