In a small change from Idris 1, this lifts to the nearest binder or
block, so doesn't lift past an explicit "do" in particular. Blocks are:
- case branches
- if branches
- scope of local function definitions, or any binder
- do blocks
Need to use 'check' which expands ambiguous names, rather than
'checkImp' which does nothing. It won't insert any new dots since it
checks in expression context.
It's a big patch, but the summary is that it's okay to use a pattern in
an erased position if either:
- the pattern can also be solved by unification (this is the same as
'dot patterns' for matching on non-constructor forms)
- the argument position is detaggable w.r.t. non-erased arguments, which
means we can tell which pattern it is without pattern matching
The second case, in particular, means we can still pattern match on
proof terms which turn out to be irrelevant, especially Refl.
Fixes#178
Rather than just raw Strings. They get evaluated immediately at the
point of elaboration, and this can be used to save repetition (e.g. of
shared library names) in declarations.
(In the Racket/Chez back ends)
A bit ugly, but it means that after making an executable, all the
necessary files are in the same directory ready for packaging. The
executable can still only be run when the libraries are in the
racket/chez library search path. In practice at the moment that means
they need to be in the current working directory...
Having a separate directory for generating executables will help deal
with packaging executables for back ends which need extra library
support, since we can copy the relevant libraries into the executable
directory and know where everything is.
To build the top level method and interface record correctly, we need to
know where to put the implicit arguments, so invent names if they don't
have them already then we'll know where to put things accurately.
Earlier solutions may influence later ones. Probably we should be
cleverer still here, and keep trying while any delayed elaborators are
run successfully, because really the order shouldn't matter!
When we check a scope in RigW, need to mark all linear things outside
that scope as irrelevant within the scope (since the scope may be used
multiple times).
