Super awesome recreative assembler. Execute with ruby and pipe into nasm

sarcasm.rb

$pushed = []
def push(*args) $pushed = args; args.map {|r| "push #{r}" } end
def pop_pushed; $pushed.reverse.map {|r| "pop #{r}" } end

puts DATA.read.gsub(/^\s*jmp\s*[^\n]*/, '%error "Dijkstra said: No!"').gsub(/=([^\n]*)/) {|c| (eval $1).join("\n  ") }
__END__
BITS 64
section .text

global math
math:
  =push("rax", "rbx")
  sub r12, r11
  =pop_pushed
  jmp math
  ret