pydevd debugger plugin

news/214.feature

@@ -0,0 +1 @@
+New pydevd resolver plugin for easier debugging

pydevd_plugins/__init__.py

@@ -0,0 +1,6 @@
+try:
+    __import__("pkg_resources").declare_namespace(__name__)
+except ImportError:  # pragma: no cover
+    import pkgutil
+
+    __path__ = pkgutil.extend_path(__path__, __name__)  # type: ignore

pydevd_plugins/extensions/__init__.py

@@ -0,0 +1,6 @@
+try:
+    __import__("pkg_resources").declare_namespace(__name__)
+except ImportError:  # pragma: no cover
+    import pkgutil
+
+    __path__ = pkgutil.extend_path(__path__, __name__)  # type: ignore

pydevd_plugins/extensions/pydevd_plugin_omegaconf.py

@@ -0,0 +1,130 @@
+# based on https://github.com/fabioz/PyDev.Debugger/tree/main/pydevd_plugins/extensions
+
+import sys
+from functools import lru_cache
+from typing import Any, Dict
+
+from _pydevd_bundle.pydevd_extension_api import TypeResolveProvider  # type: ignore
+
+
+@lru_cache(maxsize=128)
+def find_mod_attr(mod_name: str, attr: str) -> Any:
+    mod = sys.modules.get(mod_name)
+    return getattr(mod, attr, None)
+
+
+class Wrapper(object):
+    def __init__(self, target: Any, desc: str) -> None:
+        self.target = target
+        self.desc = desc
+
+    def __repr__(self) -> str:  # pragma: no cover
+        return self.desc
+
+    def __getattr__(self, attr: str) -> Any:  # pragma: no cover
+        return getattr(self.target, attr)
+
+    def __eq__(self, other: Any) -> Any:  # pragma: no cover
+        if isinstance(other, Wrapper):
+            return self.desc == other.desc and self.target == other.target
+        else:
+            return NotImplemented
+
+    def __ne__(self, other: Any) -> Any:  # pragma: no cover
+        return not self.__eq__(other)
+
+
+class OmegaConfNodeResolver(object):
+    def can_provide(self, type_object: Any, type_name: str) -> bool:
+        Node = find_mod_attr("omegaconf", "Node")
+
+        return Node is not None and issubclass(type_object, (Node, Wrapper))
+
+    def resolve(self, obj: Any, attribute: str) -> Any:
+        InterpolationResolutionError = find_mod_attr(
+            "omegaconf.errors", "InterpolationResolutionError"
+        )
+        Node = find_mod_attr("omegaconf", "Node")
+        DictConfig = find_mod_attr("omegaconf", "DictConfig")
+        ListConfig = find_mod_attr("omegaconf", "ListConfig")
+
+        if isinstance(obj, Wrapper):
+            obj = obj.target
+
+        if isinstance(obj, DictConfig):
+            field = obj.__dict__["_content"][attribute]
+        elif isinstance(obj, ListConfig):
+            field = obj.__dict__["_content"][int(attribute)]
+        else:  # pragma: no cover
+            assert False
+
+        if isinstance(field, Node) and field._is_interpolation():
+            try:
+                resolved = field._dereference_node()
+                desc = f"{field} -> {resolved}"
+                field = Wrapper(field, desc)
+            except InterpolationResolutionError as ex:
+                desc = f"{field} -> ERR: {ex}"
+                field = Wrapper(field, desc)
+
+        return field
+
+    def get_dictionary(self, obj: Any) -> Dict[str, Any]:
+        Container = find_mod_attr("omegaconf", "Container")
+        ListConfig = find_mod_attr("omegaconf", "ListConfig")
+        DictConfig = find_mod_attr("omegaconf", "DictConfig")
+        Node = find_mod_attr("omegaconf", "Node")
+        ValueNode = find_mod_attr("omegaconf", "ValueNode")
+
+        if isinstance(obj, Wrapper):
+            obj = obj.target
+
+        assert isinstance(obj, Node)
+
+        d: Dict[Any, Any] = {}
+
+        if isinstance(obj, Node):
+            if obj._is_missing() or obj._is_none():
+                return {}
+            if obj._is_interpolation():
+                if obj._parent is not None:
+                    resolved = obj._dereference_node(throw_on_resolution_failure=False)
+                else:
+                    resolved = None
+                if isinstance(obj, ValueNode):
+                    d = {}
+                elif isinstance(obj, Container):
+                    if resolved is not None:
+                        d = self.get_dictionary(resolved)
+                return d
+            else:
+                if isinstance(obj, ValueNode):
+                    d["_val"] = obj._value()
+
+        if isinstance(obj, ListConfig):
+            assert not obj._is_interpolation()
+            assert not obj._is_none()
+            assert not obj._is_missing()
+            for idx, node in enumerate(obj.__dict__["_content"]):
+                d[str(idx)] = node
+        elif isinstance(obj, DictConfig):
+            assert not obj._is_interpolation()
+            assert not obj._is_none()
+            assert not obj._is_missing()
+            for key in obj.keys():
+                node = obj._get_node(key, throw_on_missing_value=False)
+                is_inter = node._is_interpolation()
+                if is_inter:
+                    resolved = node._dereference_node(throw_on_resolution_failure=False)
+                    if resolved is not None:
+                        value = resolved
+                    else:
+                        value = node
+                else:
+                    value = node._value()
+
+                d[key] = value
+        return d
+
+
+TypeResolveProvider.register(OmegaConfNodeResolver)

requirements/dev.txt

@@ -14,3 +14,4 @@ pytest-mock
 sphinx
 towncrier
 twine
+pydevd