[jackhill/mal.git] / ruby / step0_repl.rb

$: << File.expand_path(File.dirname(__FILE__))
require "mal_readline"

# read
def READ(str)
    return str
end

# eval
def EVAL(ast, env)
    return ast
end

# print
def PRINT(exp)
    return exp
end

# repl
def REP(str)
    return PRINT(EVAL(READ(str), {}))
end

# repl loop
while line = _readline("user> ")
    puts REP(line)
end
Commit	Line	Data
718887c3 JM	1	$: << File.expand_path(File.dirname(__FILE__))
718887c3 JM	2	require "mal_readline"
f705f0fc JM	3
	4	# read
	5	def READ(str)
	6	return str
	7	end
	8
	9	# eval
	10	def EVAL(ast, env)
	11	return ast
	12	end
	13
	14	# print
	15	def PRINT(exp)
	16	return exp
	17	end
	18
	19	# repl
	20	def REP(str)
	21	return PRINT(EVAL(READ(str), {}))
	22	end
	23
86b689f3	24	# repl loop
718887c3	25	while line = _readline("user> ")
f705f0fc JM	26	puts REP(line)
f705f0fc JM	27	end