Mal implementation by Crystal

.gitignore

@@ -57,3 +57,4 @@ nim/nimcache
 .ivy2
 .sbt
 groovy/*.class
+.crystal

Makefile

@@ -10,7 +10,7 @@ PYTHON = python
 # Settings
 #
 
-IMPLS = bash c clojure coffee cpp cs erlang factor forth go groovy \
+IMPLS = bash c clojure coffee cpp crystal cs erlang factor forth go groovy \
 	haskell java julia js lua make mal ocaml matlab miniMAL nim \
 	perl php ps python r racket ruby rust scala swift vb guile
 
@@ -43,6 +43,7 @@ EXCLUDE_TESTS += test^ruby^step5 # test completes, even at 100,000
 EXCLUDE_TESTS += test^rust^step5 # no catching stack overflows
 EXCLUDE_TESTS += test^ocaml^step5 # test completes, even at 1,000,000
 EXCLUDE_TESTS += test^vb^step5   # completes at 10,000
+EXCLUDE_TESTS += test^crystal^step5   # test completes, even at 1,000,000
 
 EXCLUDE_PERFS = perf^mal  # TODO: fix this
 
@@ -57,6 +58,7 @@ c_STEP_TO_PROG =       c/$($(1))
 clojure_STEP_TO_PROG = clojure/src/$($(1)).clj
 coffee_STEP_TO_PROG =  coffee/$($(1)).coffee
 cpp_STEP_TO_PROG =     cpp/$($(1))
+crystal_STEP_TO_PROG = crystal/$($(1))
 cs_STEP_TO_PROG =      cs/$($(1)).exe
 erlang_STEP_TO_PROG =  erlang/$($(1))
 factor_STEP_TO_PROG =  factor/src/$($(1))/$($(1)).factor
@@ -98,6 +100,7 @@ c_RUNSTEP =       ../$(2) $(3)
 clojure_RUNSTEP = lein with-profile +$(1) trampoline run $(3)
 coffee_RUNSTEP =  coffee ../$(2) $(3)
 cpp_RUNSTEP =     ../$(2) $(3)
+crystal_RUNSTEP = ../$(2) $(3)
 cs_RUNSTEP =      mono ../$(2) --raw $(3)
 erlang_RUNSTEP =  ../$(2) $(3)
 factor_RUNSTEP =  factor ../$(2) $(3)

README.md

@@ -139,6 +139,13 @@ cd coffee
 coffee ./stepX_YYY
 ```
 
+### Crystal
+
+```
+cd crystal
+crystal run ./stepX_YYY.cr
+```
+
 ### Erlang
 
 *The Erlang implementation was created by [Nathan Fiedler (nlfiedler)](https://github.com/nlfiedler)*

crystal/Makefile

@@ -0,0 +1,26 @@
+STEPS = step0_repl.cr step1_read_print.cr step2_eval.cr step3_env.cr \
+        step4_if_fn_do.cr step5_tco.cr step6_file.cr step7_quote.cr \
+	step8_macros.cr step9_try.cr stepA_mal.cr
+
+STEP_BINS = $(STEPS:%.cr=%)
+LAST_STEP_BIN = $(word $(words $(STEP_BINS)),$(STEP_BINS))
+
+all: $(STEP_BINS) mal
+
+mal: $(LAST_STEP_BIN)
+	cp $< $@
+
+$(STEP_BINS): %: %.cr $(MAL_LIB)
+	crystal build --release $<
+
+clean:
+	rm -rf $(STEP_BINS) mal .crystal
+
+stats: $(MODULES) stepA_mal.cr
+	@wc $^
+
+stats-lisp: env.cr core.cr stepA_mal.cr
+	@wc $^
+
+.PHONY: all clean stats stats-lisp
+