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97 lines
3.0 KiB
Makefile
97 lines
3.0 KiB
Makefile
#
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# mal (Make Lisp)
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#
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_TOP_DIR := $(dir $(lastword $(MAKEFILE_LIST)))
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include $(_TOP_DIR)types.mk
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include $(_TOP_DIR)reader.mk
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include $(_TOP_DIR)printer.mk
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include $(_TOP_DIR)env.mk
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include $(_TOP_DIR)core.mk
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SHELL := /bin/bash
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INTERACTIVE ?= yes
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EVAL_DEBUG ?=
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# READ: read and parse input
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define READ
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$(if $(READLINE_EOF)$(__ERROR),,$(call READ_STR,$(if $(1),$(1),$(call READLINE,"user> "))))
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endef
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# EVAL: evaluate the parameter
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define LET
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$(strip \
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$(word 1,$(2) \
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$(foreach var,$(call _nth,$(1),0),\
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$(foreach val,$(call _nth,$(1),1),\
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$(call ENV_SET,$(2),$($(var)_value),$(call EVAL,$(val),$(2)))\
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$(foreach left,$(call srest,$(call srest,$(1))),
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$(if $(call _EQ,0,$(call _count,$(left))),\
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,\
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$(call LET,$(left),$(2))))))))
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endef
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define EVAL_AST
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$(strip \
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$(and $(EVAL_DEBUG),$(info EVAL_AST: $(call _pr_str,$(1))))\
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$(if $(call _symbol?,$(1)),\
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$(foreach key,$($(1)_value),\
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$(call ENV_GET,$(2),$(key))),\
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$(if $(call _list?,$(1)),\
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$(call _smap,EVAL,$(1),$(2)),\
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$(if $(call _vector?,$(1)),\
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$(call _smap_vec,EVAL,$(1),$(2)),\
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$(if $(call _hash_map?,$(1)),\
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$(foreach new_hmap,$(call __new_obj,hmap),\
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$(foreach v,$(call __get_obj_values,$(1)),\
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$(eval $(v:$(1)_%=$(new_hmap)_%) := $(call EVAL,$($(v)),$(2))))\
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$(eval $(new_hmap)_size := $($(1)_size))\
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$(new_hmap)),\
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$(1))))))
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endef
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define EVAL_INVOKE
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$(if $(__ERROR),,\
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$(and $(EVAL_DEBUG),$(info EVAL_INVOKE: $(call _pr_str,$(1))))
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$(foreach a0,$(call _nth,$(1),0),\
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$(if $(call _EQ,def!,$($(a0)_value)),\
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$(foreach a1,$(call _nth,$(1),1),\
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$(foreach a2,$(call _nth,$(1),2),\
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$(foreach res,$(call EVAL,$(a2),$(2)),\
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$(if $(__ERROR),,\
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$(if $(call ENV_SET,$(2),$($(a1)_value),$(res)),$(res),))))),\
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$(if $(call _EQ,let*,$($(a0)_value)),\
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$(foreach a1,$(call _nth,$(1),1),\
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$(foreach a2,$(call _nth,$(1),2),\
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$(call EVAL,$(a2),$(call LET,$(a1),$(call ENV,$(2)))))),\
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$(foreach el,$(call EVAL_AST,$(1),$(2)),\
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$(call _apply,$(call sfirst,$(el)),$(call srest,$(el))))))))
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endef
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define EVAL
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$(strip $(if $(__ERROR),,\
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$(and $(EVAL_DEBUG),$(info EVAL: $(call _pr_str,$(1))))\
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$(if $(call _list?,$(1)),\
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$(strip $(call EVAL_INVOKE,$(1),$(2))),\
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$(call EVAL_AST,$(1),$(2)))))
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endef
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# PRINT:
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define PRINT
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$(if $(__ERROR),Error: $(call _pr_str,$(__ERROR),yes),$(if $(1),$(call _pr_str,$(1),yes)))$(if $(__ERROR),$(eval __ERROR :=),)
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endef
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# REPL:
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REPL_ENV := $(call ENV)
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REP = $(call PRINT,$(strip $(call EVAL,$(strip $(call READ,$(1))),$(REPL_ENV))))
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REPL = $(info $(call REP,$(call READLINE,"user> ")))$(if $(READLINE_EOF),,$(call REPL))
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# Setup the environment
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REPL_ENV := $(call ENV_SET,$(REPL_ENV),+,number_plus)
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REPL_ENV := $(call ENV_SET,$(REPL_ENV),-,number_subtract)
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REPL_ENV := $(call ENV_SET,$(REPL_ENV),*,number_multiply)
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REPL_ENV := $(call ENV_SET,$(REPL_ENV),/,number_divide)
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# repl loop
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$(if $(strip $(INTERACTIVE)),$(call REPL))
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