I was thinking about compiling the dummy example and including a simple example usage, but it turns out functional.h isn't (currently) available for extensions.
Acknowledge the minimal functional backend, highlighting what's new/different for our SExpr targets.
Add and use the reference `minimal backend`.
Use `note` directives to point out missing code sections (highlighting that the included diffs are not complete).
Racket *is* still strongly-typed, it's just dynamic instead of static. Adjust phrasing to reflect that.
Adjust some of the literal includes, adding a new section from the `Functional::AbstractVisitor`, splitting the `Module::write_eval()` in twain and adding a `smtlib.cc` literal include for the node iteration, as well as for the `FunctionalSmtBackend` to compare against the minimal backend.
Move `Backend` description up to minimal functional backend section.
Add `dummy.cc`, loosely based on `backends/functional/test_generic.cc` but as an actualy backend and without the memory testing.
Skeleton section for minimal functional backend, describing the aforementioned `dummy.cc`.
celltypes: Extra type props
Now with `is_internal`, `is_metainfo`, and `has_effects`.
Each type property has a comment specifying usage/meaning.
Type properties (sans `is_internal`) get a default value of false.
`CellTypes::setup_*_type()` methods get their own `CellType` struct assignments with named fields being assigned true to improve readability.
Also remove `is_evaluable` from cell types that aren't actually `eval`-able,
instead using `is_combinatorial` which afaict is what the flag was being used as a proxy for.
Now with `is_internal`, `is_metainfo`, and `has_effects`.
Each type property has a comment specifying usage/meaning.
Type properties (sans `is_internal`) get a default value of false.
`CellTypes::setup_*_type()` methods get their own `CellType` struct assignments with named fields being assigned true to improve readability.
As the intro paragraph (now) says:
> This section will introduce the SMT-LIB functional backend and what changes are needed...
The example is intended to be read without prior knowledge of the SMT-LIB backend, but the previous version glossed over a lot and instead focused on *just* what was changed.
This version should now be easier to follow without prior knowledge, while still being able to learn enough about the `Smt` version to adapt it to a different s-expression target that isn't Rosette.
Also adds a few `literalinclude`s of smtlib.cc, which is now copied to `docs/source/generated` along with producing the rosette diff on the fly (which now also has up to 20 lines of context, enabling the full `Module::write()` diff to be literal included).
Looks up the cell type for each cell in the design, returning the value of `CellType::is_<property>`.
Only works for exact match, and only for internal cells.
Also add a simple test checking a small design with an $add cell and an $sdff cell.
