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def sub_vars(string)
outvars = []
blockvars = []
vars = string.split(",").map(&:strip)
vars.each do |var|
if var =~ /[a-z_][a-zA-Z0-9_]*?/ then
outvars << "Patter::Var"
blockvars << var
else
outvars << var
end
end
return outvars.join(", "), blockvars.join(", ")
end
def sub_funs(string, funs)
funs.each do |fun|
string.gsub!(/#{fun}\((.*?)\)/, "#{fun}.call(\\1)")
end
return string
end
lines = $stdin.readlines.map(&:chomp)
funs = []
puts "require './patter'"
puts
lines.each do |line|
if line =~ /\s*([a-z_][a-zA-Z0-9_]*?)\((.*)\) is\s*$/ then
unless funs.include?($1) then
funs << $1
puts "#{$1} = Patter::Fun.new"
end
arg, blk = sub_vars($2)
if blk.empty? then
puts "#{$1}.when(#{arg}) do"
else
puts "#{$1}.when(#{arg}) do |#{blk}|"
end
else
puts sub_funs(line, funs)
end
end
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