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35 lines
781 B
Makefile
35 lines
781 B
Makefile
#
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# mal (Make Lisp) Object Types and Functions
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#
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ifndef __mal_env_included
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__mal_env_included := true
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_TOP_DIR := $(dir $(lastword $(MAKEFILE_LIST)))
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include $(_TOP_DIR)types.mk
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#
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# ENV
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#
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# An ENV environment is a hash-map with an __outer__ reference to an
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# outer environment
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# Keys are stored as Make variables named $(env)_$(key). The outer
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# environment is the content of the variable itself.
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# 1: outer environment, or "" -> new environment
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ENV = $(call __new_obj,env,$1)
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# 1:env 2:key -> value or ""
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ENV_GET = $(if $1,$(or $($1_$2),$(call ENV_GET,$($1),$2)))
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# 1:env 2:key 3:value
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ENV_SET = $(eval $1_$2 := $3)
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# 1:env -> (encoded) keys
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env_keys = $(foreach k,$(patsubst $1_%,%,$(filter $1_%,$(.VARIABLES)))\
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,$(call _symbol_val,$k))
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endif
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