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m4tx
added this pull request to stack #98
October 20, 2026 14:11
This change adds `as_read_only` method that returns a reference struct pointing to the `DeviceTreeNode` and removes `impl Node for &DeviceTreeNode`. There are two main reasons for making this change: * Unifying `FdtNodeMut` and `DeviceTreeNode` - since `FdtNodeMut` contains a mutable reference, it cannot be `Copy`, so for the `Node` trait implementation it exposes its own `as_read_only` method. * This allows us to properly store `parent_address_space` in objects returned by `child()`, `find_node`, etc. without any lifetime issues, self-referential structs, mutability problems, or similar. The main tradeoff is convenience - the users would need to call `as_read_only()` for every reading operation. To avoid this, convenience wrapper methods are added and unified via a macro shared by `FdtNodeMut` and `DeviceTreeNode`.
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This change adds
as_read_onlymethod that returns a reference struct pointing to theDeviceTreeNodeand removesimpl Node for &DeviceTreeNode.There are two main reasons for making this change:
FdtNodeMutandDeviceTreeNode- sinceFdtNodeMutcontains a mutable reference, it cannot beCopy, so for theNodetrait implementation it exposes its ownas_read_onlymethod.parent_address_spacein objects returned bychild(),find_node, etc. without any lifetime issues, self-referential structs, mutability problems, or similar.The main tradeoff is convenience - the users would need to call
as_read_only()for every reading operation. To avoid this, convenience wrapper methods are added and unified via a macro shared byFdtNodeMutandDeviceTreeNode.