Rather than require all files to be listed on the command-line (and having to
check consistency with `> Using` directives), the main catala CLI is now a bit
more clever.
⇒ There is a new assumption that a module name definition must match the file
name (up to case and extension) — with appropriate error handling to enforce it.
In exchange, `> Using` directives are now used to more transparently lookup the
appropriate `.catala_*` interfaces and the compiled artifacts for the used modules (handling transitive dependencies), with just standard `-I` flags for when they need to be looked up in different places.
rather than scattered in structures
The context is still hierarchical for defs though, so one needs to retrieve the
path to lookup in the correct context for info. Exceptions are enums and struct
defs, which are re-exposed at toplevel.
... and add a custom printer
Since this is a very common bug, this patch should gain us a lot of time when
debugging uncaught Not_found errors, because the element not found can now be
printed straight away without the need for further debugging.
The small cost is that one should remember to catch the correct specialised
`Foo.Map.Not_found _` exception rather than the standard `Not_found` (which
would type-check but not catch the exception). Using `find_opt` should be
preferred anyway.
Note that the other functions from the module `Map` that raise `Not_found` are
not affected ; these functions are `choose`, `min/max_binding`,
`find_first/last` which either take a predicate or fail on the empty map, so it
wouldn't make sense for them (and we probably don't use them much).
- We're able to say from the parser what the user could have written. It may not be complete due to the acceptable function of Menhir : it is only an indication given to the user (and not intended to be an adaptive documentation)
- .mli file added : module interface for suggestions
- Add a test that provides a typographical or a logical error.
- Documentation and type / name changes for suggestions
- suggestions.ml : improve details + algorithm implementation (see @Altgr reviews) + comments
- suggestions implementation : since we want to keep the same structure to display suggestion messages, Suggestion is no longer a formatted string but a string list. The goal is to have a similar formatted string for each suggestion, no matter what the error message is.
--> This involves changes to suggestions.mli, compiler/desugared/from_surface.ml (most important one) and compiler/surface/parser_driver.ml
(first working dynload test with compilation done by manual calls to ocaml)
A few pieces of the puzzle:
* Loading of interfaces only from Catala files
* Registration of toplevel values in modules compiled to OCaml, to allow access
using dynlink
* Shady conversion from OCaml runtime values to/from Catala expressions, to
allow interop (ffi) of compiled modules and the interpreter
Two interdependent changes here:
1. Enforce all instances of Shared_ast.gexpr to use the generic type for marks.
This makes the interfaces a tad simpler to manipulate: you now write
`('a, 'm) gexpr` rather than `('a, 'm mark) gexpr`.
2. Define a polymorphic `Custom` mark case for use by pass-specific annotations.
And leverage this in the typing module
The module is renamed to `Mark`, and functions renamed to avoid redundancy:
`Marked.mark` is now `Mark.add`
`Marked.unmark` is now `Mark.remove`
`Marked.map_under_mark` is now simply `Mark.map`
etc.
`Marked.same_mark_as` is replaced by `Mark.copy`, but with the arguments
swapped (which seemed more convenient throughout)
Since a type `Mark.t` would indicate a mark, and to avoid confusion, the type
`Marked.t` is renamed to `Mark.ed` as a shorthand for `Mark.marked` ; this part
can easily be removed if that's too much quirkiness.
This adds a few positions to the parser, and tweaks some others, vastly
improving the reporting of some errors (inconsistent functions definitions, but
also exceptions cycles, etc.)
* temporary and undocumented while waiting for discussion an approval
* previous patches already allowed definition (at toplevel) but there was no
syntax for calls
* no syntax for multi-args _local_ functions yet
Using them will lead to "not supported yet" errors soon after, but it's a start
to get to handling separate modules.
The idea is that `foo` can now also be `Bar.foo`, `Bar.Baz.foo`, `foo.Struc.fld`
can be `foo.Bar.Baz.Struc.fld`, etc.
The next steps are to enable the lookups to handle this paths, and to provide
ways to load the external modules to feed these lookups.
Closes#373
This forbids expressions such as `a and b or c`, avoiding the need to set an
implicit priority between `and`, `or` and `xor`, which I find error-prone.
Instead, when that appears, a message asking for explicit parentheses will be
shown to the user.
Implementation note: since that would be extremely tedious to do in the parser
directly, the parser is set to allow right-associativity without discrimination
for the logical operators, and the check is done during desugaring. This
required to explicit parentheses in the surface AST to discriminate the case
where the priority was explicit.
