update examples to use typed pointers where appropriate

(found 2 regressions that still need to be handled)

docs/source/todo.rst

@@ -1,6 +1,10 @@
 TODO
 ====
 
+c64 (and cx16 as well) fileselector has 2 issues when using ^^ubyte (code size and compiler error about return statement)
+cx16 life code size regression when using ^^ubyte
+
+
 pointer arithmetic precedence issue?:
     ^^uword values
     cx16.r0 = values + (pos-1)      ; different outcome as:
@@ -9,7 +13,7 @@ pointer arithmetic precedence issue?:
 sorting.gnomesort_uw()   : when converted to ^^uword, the resulting code is MUCH larger than before  (peek/poke code gen problem?)
 (same with shellsort_uw and others)
 
-this doesn't work:
+this doesn't work but probably should:
         ^^uword xpositions_ptr
         repeat num_sprites {
             pokew(cx16.VERA_DATA0, xpositions_ptr^^)        ; must set data0 and data1 at the same time
@@ -21,7 +25,6 @@ STRUCTS and TYPED POINTERS (6502 codegen specific)
 --------------------------------------------------
 
 - implement the TODO's in PointerAssignmentsGen.
-- scan through 6502 examples to change untyped uword pointers to typed pointers
 - fix code size regressions (if any left)
 - update structpointers.rst docs with 6502 specific things?
 - optimize deref()  to not always add the field offset to the pointer value but using it in the Y register instead

examples/cx16/amiga.p8

@@ -158,7 +158,7 @@ widget {
         }
     }
 
-    sub icon(uword x, uword y, uword caption) {
+    sub icon(uword x, uword y, str caption) {
         const ubyte width = 56
         const ubyte height = 28
         highlightedrect(x, y, width, height, false, false)
@@ -170,7 +170,7 @@ widget {
     }
 
 
-    sub window_titlebar(uword x, uword y, uword width, uword titlestr, bool active) {
+    sub window_titlebar(uword x, uword y, uword width, str titlestr, bool active) {
         const ubyte height = 11
         widget.highlightedrect(x+widget.window_close_icon.width, y, width-64, height, true, active)
         gfx_hires.plot(x+widget.window_close_icon.width, y+height-1, 1) ; correct bottom left corner

examples/cx16/automatons.p8

@@ -55,7 +55,7 @@ main {
         for cx16.r9L in "Cellular Automaton #" {
             cx16.GRAPH_put_next_char(cx16.r9L)
         }
-        uword num_str = conv.str_ub(number)
+        ^^ubyte num_str = conv.str_ub(number)
         do {
             cx16.GRAPH_put_next_char(@(num_str))
             num_str++

examples/cx16/bobs.p8

@@ -176,7 +176,7 @@ main {
         uword vmem = vmembase * 2048        ; mkword(vmembase,0) * 8
         ubyte bank = vmembase>=32 as ubyte
         vmem += 35
-        uword number_str = conv.str_uw0(number)
+        ^^ubyte number_str = conv.str_uw0(number)
         uword pixelsptr = &numberpixels + (number_str[1] & 15)*7
         ubyte pix
         cx16.VERA_CTRL = 0

examples/cx16/floatparse.p8

@@ -60,7 +60,7 @@ main {
         txt.nl()
     }
 
-    sub parse(uword stringptr) -> float {
+    sub parse(str stringptr) -> float {
         if @(stringptr)==0
             return 0.0
 

examples/textelite.p8

@@ -373,7 +373,7 @@ market {
         }
     }
 
-    sub match(uword nameptr) -> ubyte {
+    sub match(str nameptr) -> ubyte {
         ubyte ci
         for ci in 0 to len(names)-1 {
             if util.prefix_matches(nameptr, names[ci])
@@ -429,7 +429,7 @@ galaxy {
         market.init(lsb(seed[0])+msb(seed[2]))
     }
 
-    sub search_closest_planet(uword nameptr) -> bool {
+    sub search_closest_planet(str nameptr) -> bool {
         ubyte x = planet.x
         ubyte y = planet.y
         ubyte current_planet_num = planet.number
@@ -911,7 +911,7 @@ planet {
             }
         }
 
-        sub concat_string(uword str_ptr) {
+        sub concat_string(str str_ptr) {
             repeat {
                 ubyte c = @(str_ptr)
                 if c==0
@@ -1005,7 +1005,7 @@ planet {
 }
 
 util {
-    sub prefix_matches(uword prefixptr, uword stringptr) -> bool {
+    sub prefix_matches(str prefixptr, str stringptr) -> bool {
         repeat {
             ubyte pc = @(prefixptr)
             ubyte sc = @(stringptr)
@@ -1019,7 +1019,7 @@ util {
         }
     }
 
-    sub print_right(ubyte width, uword s) {
+    sub print_right(ubyte width, str s) {
         repeat width - strings.length(s) {
             txt.spc()
         }