Readability
* Use implicit parameter transmission ($(_list?) instead of $(call
_list?,$1),
first/lastword instead of word 1/words,
$1 instead of $(1).
* Use an undefined $(rem) macro and some automatic stripping (if,
foreach) to indent code with less calls to `strip` functions.
* Name the Make macro implementing a MAL core function exactly like the
function (modulo the encoding above) and simplify core_ns accordingly.
* Replace empty results representing `nil` with explicit MAL values.
* Implement large conditionals with a computed variable name, as already
done in printer.mk. For QUASIQUOTE and EVAL, this reduces a lot the
diff between steps.
* Represent the reader state as an explicit global variable instead of
passing the same name as argument again and again.
* Merge read-atom into read-form so that the switch on first character
is more visible.
Encapsulation
* Hide most representations into types.mk.
* Implement the type as a suffix in order to avoid a conditional in
_obj_type.
* Implement _error with throw.
* Create distinct types for keywords and macros.
* Move most metadata and atom stuff from core.mk to types.mk.
* Move parameter association from env to types because it hides more
about the representation of functions.
Representation
* Encode Make special characters in all strings/keywords/symbols, so
they can be used directly as spaced words and/or variable names for
map keys. (The encoding adding separating characters is kept for
read-string and seq).
* Change representation of numbers/strings/keywords/symbols, reducing
the number of Make variables.
Various
* Allow keyword argument for keyword core function.
* Shorten time-mes,slurp,readline...
* Remove obsolete stuff:
* `get` and `contains?` for vectors
* `count` for hash-maps
* `_join` from util.mk.
* `type` from core.mk.
* Add a function listing env_keys for DEBUG-EVAL.
* Fix some includes.
- Reorder README to have implementation list after "learning tool"
bullet.
- This also moves tests/ and libs/ into impls. It would be preferrable
to have these directories at the top level. However, this causes
difficulties with the wasm implementations which need pre-open
directories and have trouble with paths starting with "../../". So
in lieu of that, symlink those directories to the top-level.
- Move the run_argv_test.sh script into the tests directory for
general hygiene.
