move escape sequence parsing to tokenizer

examples/x11.zr

@@ -1,35 +0,0 @@
-// needs to be compiled with -m -C="-lX11"
-extern XOpenDisplay
-extern XDefaultRootWindow
-extern XCreateSimpleWindow
-extern XMapWindow
-extern XSelectInput
-extern XNextEvent
-extern XBlackPixel
-extern XWhitePixel
-extern XSetForeground
-extern XCreateGC
-extern XDefaultScreen
-extern XDrawString
-
-func main[] : i64
-    let dpy: ptr = XOpenDisplay(0)
-    let screen: ptr = XDefaultScreen(dpy)
-
-    let white: ptr = XWhitePixel(dpy, screen)
-    let black: ptr = XBlackPixel(dpy, screen)
-
-    let win: ptr = XCreateSimpleWindow(dpy, XDefaultRootWindow(dpy), 0, 0, 200, 100, 0, black, white)
-
-    XSelectInput(dpy, win, 1 << 15)
-    XMapWindow(dpy, win)
-
-    let gc: ptr = XCreateGC(dpy, win, 0, 0)
-    XSetForeground(dpy, gc, black)
-    
-    let ev: ptr = mem.alloc(256)
-    
-    while true
-        XNextEvent(dpy, ev)
-        if ev[0] == 12
-            XDrawString(dpy, win, gc, 20, 50, "Hello, World!", 13)