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.
See issue #587.
* Merge eval-ast and eval into a single conditional.
* Expand macros during the apply phase, removing lots of duplicate
tests, and increasing the overall consistency by allowing the macro
to be computed instead of referenced by name (`((defmacro! cond
(...)))` is currently illegal for example).
* Print "EVAL: $ast" at the top of EVAL if DEBUG-EVAL exists in the
MAL environment.
* Remove macroexpand and quasiquoteexpand special forms.
* Use pattern-matching style in process/step*.txt.
Unresolved issues:
c.2: unable to reproduce with gcc 11.12.0.
elm: the directory is unchanged.
groovy: sometimes fail, but not on each rebuild.
nasm: fails some new soft tests, but the issue is unreproducible when
running the interpreter manually.
objpascal: unreproducible with fpc 3.2.2.
ocaml: unreproducible with 4.11.1.
perl6: unreproducible with rakudo 2021.09.
Unrelated changes:
Reduce diff betweens steps.
Prevent defmacro! from mutating functions: c forth logo miniMAL vb.
dart: fix recent errors and warnings
ocaml: remove metadata from symbols.
Improve the logo implementation.
Encapsulate all representation in types.lg and env.lg, unwrap numbers.
Replace some manual iterations with logo control structures.
Reduce the diff between steps.
Use native iteration in env_get and env_map
Rewrite the reader with less temporary strings.
Reduce the number of temporary lists (for example, reverse iteration
with butlast requires O(n^2) allocations).
It seems possible to remove a few exceptions: GC settings
(Dockerfile), NO_SELF_HOSTING (IMPLS.yml) and step5_EXCLUDES
(Makefile.impls) .
- 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.
