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# -*- coding: utf-8 -*-
require_relative 'atom'
require_relative 'error'
require_relative 'macro'
require_relative 'to_ruby'
module MIKU
class Primitive
include Atom
include ToRuby
def initialize(func)
@func = func.to_sym
end
def call(*args)
send(@func, *args)
end
def self.injecting_method(name, method = nil)
method = name unless method
define_method(name){ |symtable, *objects|
unless objects.empty?
first, *rest = *objects
rest.inject(eval(symtable, first)){|a, b|
a.__send__(method, eval(symtable, b)) } end } end
def self.consing_method(name, method = nil)
method = name unless method
define_method(name){ |symtable, *objects|
unless objects.empty?
objects.map{ |x| eval(symtable, x) }.enum_for(:each_cons, 2).all?{ |a|
a[0].__send__(method, a[1]) } end } end
injecting_method(:+)
injecting_method(:-)
injecting_method(:*)
injecting_method(:/)
consing_method(:<)
consing_method(:>)
consing_method(:<=)
consing_method(:>=)
consing_method(:eq, :equal?)
consing_method(:eql, :==)
consing_method(:equal, :===)
def backquote(symtable, val)
result = []
val.each{|n|
if not n.is_a?(List) then
result << n
elsif n.car == :comma then
result << eval(symtable, n[1])
elsif n.car == :comma_at then
list = eval(symtable, n[1])
raise ExceptionDelegator.new(',@がリスト以外に対して適用されました', ArgumentError) if not list.is_a?(List)
result.concat(list.to_a) if list
else
result << backquote(symtable, n)
end
}
result
end
def cons(symtable, head, tail)
Cons.new(eval(symtable, head), eval(symtable, tail))
end
def eval(symtable, node)
miku_eval_another(symtable, node)
end
def _not(symtable, sexp)
not eval(symtable, sexp) end
def if(symtable, condition, true_case, false_case = nil)
if(eval(symtable, condition)) then
eval(symtable, true_case)
else
eval(symtable, false_case)
end
end
def list(symtable, *args)
args.map{|n| eval(symtable, n) }.to_cons
end
def listp(symtable, val)
eval(symtable, val).is_a?(List)
end
def quote(symtable, val)
val
end
def set(symtable, key, val, *args)
raise ExceptionDelegator.new('setに与える引数は偶数個にして下さい', ArgumentError) if args.size == 1
key = eval(symtable, key)
val = eval(symtable, val)
symtable.set(key, val)
return val if args.empty?
set(symtable, *args)
end
def defun(symtable, key, val, *args)
raise ExceptionDelegator.new('defunに与える引数は偶数個にして下さい', ArgumentError) if args.size == 1
key = eval(symtable, key)
val = eval(symtable, val)
symtable.defun(key, val)
return val if args.empty?
defun(symtable, *args)
end
def function(symtable, symbol)
if symbol.is_a? Symbol
symtable[symbol].cdr
else
symbol end end
def macro(symtable, alist, *body)
Macro.new(alist, body)
end
def macro_expand_all(symtable, sexp)
macro_expand_all_ne(symtable, eval(symtable, sexp))
end
def macro_expand_all_ne(symtable, sexp)
if sexp.is_a?(List)
expanded = macro_expand_ne(symtable, sexp)
case expanded
in [Symbol => macro, *] if symtable[macro].cdr.is_a?(Macro)
macro_expand_all_ne(symtable, expanded)
in List
expanded.map(&method(:macro_expand_all_ne).curry.(symtable))
else
expanded
end
else
sexp
end
end
def macro_expand_ne(symtable, sexp)
if sexp.is_a? List
macro = if(sexp.car.is_a? Symbol)
symtable[sexp.car].cdr
else
eval(symtable, sexp.car) end
if macro.is_a?(Macro)
macro.macro_expand(*sexp.cdr)
else
sexp end
else
sexp end end
def to_ruby(symtable, sexp)
MIKU::ToRuby.to_ruby(macro_expand_all(symtable, sexp))
end
def to_ruby_ne(symtable, sexp)
MIKU::ToRuby.to_ruby(macro_expand_all_ne(symtable, sexp))
end
def macro_expand(symtable, sexp)
macro_expand_ne(symtable, eval(symtable, sexp))
end
def negi(parenttable, alist, *body)
# body = body.map{ |node| macro_expand(parenttable, node) }
lambda{ |*args|
symtable = parenttable.miracle_binding(alist, args)
body.inject(nil){ |last, operator|
eval(symtable, operator) } } end
def require_runtime_library(symtable, filename)
require eval(symtable, filename)
end
end
end
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