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Neither keywords nor strings are modified by evaluation, so evaluating map keys is a no-op. Document this in the guide. |
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| .. | ||
| .gitignore | ||
| core.sml | ||
| Dockerfile | ||
| env.sml | ||
| LargeInt.sml | ||
| main.sml | ||
| Makefile | ||
| printer.sml | ||
| reader.sml | ||
| README.md | ||
| run | ||
| step0_repl.mlb | ||
| step0_repl.sml | ||
| step1_read_print.mlb | ||
| step1_read_print.sml | ||
| step2_eval.mlb | ||
| step2_eval.sml | ||
| step3_env.mlb | ||
| step3_env.sml | ||
| step4_if_fn_do.mlb | ||
| step4_if_fn_do.sml | ||
| step6_file.mlb | ||
| step6_file.sml | ||
| step7_quote.mlb | ||
| step7_quote.sml | ||
| step8_macros.mlb | ||
| step8_macros.sml | ||
| step9_try.mlb | ||
| step9_try.sml | ||
| stepA_mal.mlb | ||
| stepA_mal.sml | ||
| types.sml | ||
| util.sml | ||
SML-MAL
This is Make-A-Lisp in Standard ML.
Building
Just run make.
Building requires a Standard ML compiler with basis library. This MAL implementation has been tested and works with Poly/ML, MLton, and Moscow ML.
On Ubuntu, you can run apt-get install polyml libpolyml-dev.
By setting sml_MODE to polyml, mosml, or mlton on invoking make you
can select which compiler to use. The Makefile has some hacks to figure out
how to make the different compilers build everything.
Running
You can build a mal binary from the final step with make dist:
$ make dist
$ ./mal
Mal [sml]
user> (map (fn* (x) (println "Odelay!")) [1 2 3 4 5])
Odelay!
Odelay!
Odelay!
Odelay!
Odelay!
(nil nil nil nil nil)
user>