Implement Rust-side reconstruction of the nested IR to FlatIR.#1235
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Implement Rust-side reconstruction of the nested IR to FlatIR.#1235copybara-service[bot] wants to merge 1 commit into
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This change does not yet modify consumers in generate_bindings to use the realized children's items. Rather we derive the children_item_ids from the items passed by the frontend (if the nested_IR flag is enabled) to be consistent with the flat IR branch. Specifically, this change: - Implements `make_ir_from_tree` in `ir.rs` to reconstruct the declaration tree on the Rust side from `top_level_items`, and populate a lookup cache of itemId to items. - Ensures nested items are discoverable: `db::find_untyped_decl` looks up items in the reconstructed tree cache instead of `flat_ir.items`. - Propagates changes to IR structure and db to the relevant bindings generation logic ie. `generate_struct_and_union.rs` PiperOrigin-RevId: 933733681
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Implement Rust-side reconstruction of the nested IR to FlatIR.
This change does not yet modify consumers in generate_bindings to use the realized children's items. Rather we derive the children_item_ids from the items passed by the frontend (if the nested_IR flag is enabled) to be consistent with the flat IR branch.
Specifically, this change:
make_ir_from_treeinir.rsto reconstruct the declaration tree on the Rust side fromtop_level_items, and populate a lookup cache of itemId to items.db::find_untyped_decllooks up items in the reconstructed tree cache instead offlat_ir.items.generate_struct_and_union.rs