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#!/usr/bin/env ruby
def getlist(stack, markermode, markerautoclear)
if markermode
h = []
wm = false
loop do
t = stack.pop
wm = t == :mark
break if wm
h << t
break if stack.empty?
end
stack.push(:mark) if wm && !markerautoclear
h.reverse
else
n = stack.pop
stack.pop(n)
end
end
def handle(str, stack, markermode, markerautoclear, destructiveprint)
exit if str.nil?
str.split.each do |token|
case token
when /[+-][0-9]+/
stack.push(token.to_i)
when "+", "add", "plus"
a, b = stack.pop(2)
stack.push(a + b)
when ".+", ".add", ".plus", ".sum"
h = getlist(stack, markermode, markerautoclear)
stack.push(h.sum)
when "-", "sub", "subtract", "minus"
a, b = stack.pop(2)
stack.push(a - b)
when "*", "mul", "multiply", "times"
a, b = stack.pop(2)
stack.push(a * b)
when "/", "div", "divide"
a, b = stack.pop(2)
stack.push(a / b)
when "%", "mod", "modulate", "rem", "remainder"
a, b = stack.pop(2)
stack.push(a % b)
when "d", "roll"
n = stack.pop
d = stack.pop
n.times { stack.push(rand(d) + 1) }
when "c", "copy", "dup"
h = stack.pop
stack.push(h)
stack.push(h)
when ".c", ".copy", ".dup"
h = getlist(stack, markermode, markerautoclear)
stack.push(*h)
stack.push(:mark) if markermode && !markerautoclear
stack.push(*h)
when "s", "swap"
a, b = stack.pop(2)
stack.push(b, a)
when "r", "rot", "rotate"
a, b, c = stack.pop(3)
stack.push(b, c, a)
when ".r", ".rot", ".rotate"
c = stack.pop
h = getlist(stack, markermode, markerautoclear)
stack.push(*h.rotate(c))
when "o", "over"
a, b = stack.pop(2)
stack.push(a, b, a)
when "p", "print"
t = stack.pop
puts t
stack.push(t) unless destructiveprint
when ".ex", ".explode"
x = stack.pop
h = getlist(stack, markermode, markerautoclear)
lm = 0
loop do
m = h.count(x)
break if m == lm
(m-lm).times { h << (rand(x) + 1) }
lm = m
end
stack.push(*h)
when ".k", ".kh", ".keep", ".keephigh", ".keephighest"
k = stack.pop
h = getlist(stack, markermode, markerautoclear)
h.sort!
stack.push(*h.pop(k))
when ".kl", ".keeplow", ".keeplowest"
k = stack.pop
h = getlist(stack, markermode, markerautoclear)
h.sort!
stack.push(*h.shift(k))
when ">", "gt", "greaterthan"
c = stack.pop
h = stack.pop
stack.push(c > h ? 1 : 0)
when ".>", ".gt", ".greaterthan"
c = stack.pop
h = getlist(stack, markermode, markerautoclear)
stack.push(h.count{ |d| c > d })
when ">=", "gteq", "greaterthanorequalto"
c = stack.pop
h = stack.pop
stack.push(c >= h ? 1 : 0)
when ".>=", ".gteq", ".greaterthanorequalto"
c = stack.pop
h = getlist(stack, markermode, markerautoclear)
stack.push(h.count{ |d| c >= d })
when "=", "eq", "equalto"
c = stack.pop
h = stack.pop
stack.push(c == h ? 1 : 0)
when ".=", ".eq", ".equalto"
c = stack.pop
h = getlist(stack, markermode, markerautoclear)
stack.push(h.count{ |d| c == d })
when "<=", "lteq", "lessthanorequalto"
c = stack.pop
h = stack.pop
stack.push(c <= h ? 1 : 0)
when ".<=", ".lteq", ".lessthanorequalto"
c = stack.pop
h = getlist(stack, markermode, markerautoclear)
stack.push(h.count{ |d| c <= d })
when "<", "lt", "lessthan"
c = stack.pop
h = stack.pop
stack.push(c < h ? 1 : 0)
when ".<", ".lt", ".lessthan"
c = stack.pop
h = getlist(stack, markermode, markerautoclear)
stack.push(h.count{ |d| c < d })
when "!", "drop"
stack.pop
when ".!", ".drop"
getlist(stack, markermode, markerautoclear)
when "m", "mark"
stack.push(:mark)
when "~s", "~stack"
puts stack.join(" ")
when "~mm", "~markermode"
markermode = !markermode
when "~mac", "~markerautoclear"
markerautoclear = !markerautoclear
when "~dp", "~destructiveprint"
destructiveprint = !destructiveprint
when "~state"
print "Stack: "
pp stack
print "Marker Mode: #{markermode ? "ON " : "OFF"} "
puts "Marker Auto-Clear: #{markerautoclear ? "ON " : "OFF"}"
puts "Destructive Print: #{destructiveprint ? "ON " : "OFF"}"
when "~q", "~quit"
exit
else
puts "I don't know how to #{token}!"
end
end
[markermode, markerautoclear, destructiveprint]
end
stk = []
mm = true
mac = false
dp = true
if $stdin.tty?
loop do
print "> "
mm, mac, dp = handle(gets, stk, mm, mac, dp)
end
else
mm, mac, dp = handle($stdin.read, stk, mm, mac, dp)
end
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