chore: import upstream snapshot with attribution

python/mirage/resource/dev/dev.py

@@ -0,0 +1,71 @@
+# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
+
+from mirage.accessor.ram import RAMAccessor
+from mirage.commands.builtin.ram import COMMANDS
+from mirage.ops.ram import OPS as RAM_OPS
+from mirage.resource.base import BaseResource
+from mirage.types import ResourceName
+
+_DEV_NAMES = frozenset({"null", "zero"})
+_ZERO_CHUNK_SIZE = 1 << 20
+
+
+class _DevFiles:
+
+    def __contains__(self, key: str) -> bool:
+        name = key.strip("/")
+        return name in _DEV_NAMES
+
+    def __getitem__(self, key: str) -> bytes:
+        name = key.strip("/")
+        if name == "null":
+            return b""
+        if name == "zero":
+            return b"\x00" * _ZERO_CHUNK_SIZE
+        raise KeyError(key)
+
+    def __setitem__(self, key: str, value: bytes) -> None:
+        pass
+
+    def pop(self, key: str, default=None):
+        return default
+
+    def __iter__(self):
+        return iter(["/null", "/zero"])
+
+    def keys(self):
+        return ["/null", "/zero"]
+
+
+class DevStore:
+
+    def __init__(self) -> None:
+        self.files: _DevFiles = _DevFiles()
+        self.dirs: set[str] = {"/"}
+        self.modified: dict[str, str] = {}
+
+
+class DevResource(BaseResource):
+
+    name: str = ResourceName.RAM
+
+    def __init__(self) -> None:
+        super().__init__()
+        self._store = DevStore()
+        self.accessor = RAMAccessor(self._store)
+        for fn in COMMANDS:
+            self.register(fn)
+        for fn in RAM_OPS:
+            self.register_op(fn)