Golf tostring()

chameleonic.p8

@@ -143,63 +143,40 @@ kbd={}
 add(real_modules,kbd)
 function kbd:init()
  self.real=btn()
- self.down=0
+ self.state={btn=0}
 end
 
 function kbd:update()
  -- figure out what keys are _really_ pressed
- local now_real=btn()
- local was_real=self.real
+ local now_real,was_real=btn(),self.real
  self.real=now_real
 
  -- add keys that are really pressed 
  -- if they weren't really pressed before
  -- (they may have been force-
  --  released by :release())
- local real_pressed=(~was_real)&now_real
+ local real_pressed=~was_real&now_real
 
- local now_down=(self.down&now_real)|real_pressed
- local was_down=self.down
- self.down=now_down
+ local state=self.state
+ local now_down=state.btn&now_real|real_pressed
+ local was_down=state.btn
 
  -- deduce pressed/released by changes in down
- local pressed=(~was_down)&now_down
- local released=(~now_down)&was_down
-
- self.pressed=pressed
- self.released=released
+ state.btn,state.btnp,state.btnr=
+  now_down,
+  ~was_down&now_down,
+  ~now_down&was_down
 end
 
-function kbd:btn(i)
- return self.down&(1<<i)!=0
-end
-
-function kbd:btnp(i)
- return self.pressed&(1<<i)!=0
-end
-
-function kbd:btnr(i)
- return self.released&(1<<i)!=0
+for _kbdi in all(split"btn,btnp,btnr") do
+ kbd[_kbdi]=function(self,i,t) return 1<<i&self.state[_kbdi]!=0 end
 end
 
 function kbd:release(i)
- self.down&=~(1<<i)
+ self.state.btn&=~(1<<i)
 end
 
 function tostring(any)
- if type(any)=="function" then 
-     return "function" 
- end
- if any==nil then 
-     return "nil" 
- end
- if type(any)=="string" then
-     return any
- end
- if type(any)=="boolean" then
-     if any then return "true" end
-     return "false"
- end
  if type(any)=="table" then
   local str = "{ "
   for k,v in pairs(any) do
@@ -207,10 +184,7 @@ function tostring(any)
   end
   return str.."}"
  end
- if type(any)=="number" then
-     return ""..any
- end
-  return "unknown" -- should never show
+ return tostr(any)
 end
 
 -->8