Qiskit / qiskit / 18819258504

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github

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Commit Message

Encapsulate VF2 configuration and return types (#14861)

* Encapsulate VF2 configuration and return types

The configuration of the Rust-space `vf2_layout_pass` is encapsulated
into a single struct, and the C API updated to use this form.  This has
benefits from C, in that we can modify the configuration, and C can more
explicitly update it (since there's no named arguments in C), but also
prospective benefits in our own internal Rust code, since it allows
simpler configuration sharing between the current `VF2Layout` and the
upcoming port of `VF2PostLayout` to Rust.

`strict_direction` and `avg_error_map` are not part of the new
`Vf2PassConfiguration` object because they're additional configurations
that apply only to the average-heuristic `VF2Layout`, and not
`VF2PostLayout` running in strict mode (which is the most "complete"
subgraph isomorphism checker).

The abstraction of the result return type is similarly in preparation
for `VF2PostLayout`.

* Fix styling and comments in C API

* Update documentation build

* Update crates/cext/src/transpiler/passes/vf2.rs

Co-authored-by: Julien Gacon <gaconju@gmail.com>

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Co-authored-by: Julien Gacon <gaconju@gmail.com>

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