Add .hash to integer types. Fixup of make and tmake. Updated map.c3 to become a working example. Fix bug in subarray -> pointer conversion. Search extension methods in std::core. Fix slice <-> slice copy.

lib/std/core/builtin.c3

@@ -147,3 +147,13 @@ macro bool @convertible(#expr, $To) @builtin
 {
 	return $checks($To x = #expr);
 }
+
+macro uint int.hash(int i) = i;
+macro uint uint.hash(uint i) = i;
+macro uint short.hash(short s) = s;
+macro uint ushort.hash(ushort s) = s;
+macro uint char.hash(char c) = c;
+macro uint ichar.hash(ichar c) = c;
+macro uint long.hash(long i) = (uint)((i >> 32) ^ i);
+macro uint ulong.hash(ulong i) = (uint)((i >> 32) ^ i);
+macro uint bool.hash(bool b) = (uint)b;

lib/std/core/mem_array.c3

@@ -26,7 +26,7 @@ macro talloc($Type, usize elements)
  **/
 macro make($Type, usize elements)
 {
-    $Type* ptr = calloc($sizeof($Type) * elements);
+    $Type* ptr = calloc($Type.sizeof * elements);
     return ptr[:elements];
 }
 
@@ -35,6 +35,6 @@ macro make($Type, usize elements)
  **/
 macro tmake($Type, usize elements)
 {
-    $Type* ptr = tcalloc($sizeof($Type) * elements, $alignof($Type[1]));
+    $Type* ptr = tcalloc($Type.sizeof * elements, $alignof($Type[1]));
     return ptr[:elements];
 }

lib/std/math.c3

@@ -138,5 +138,11 @@ macro bool is_power_of_2(x)
 	return x != 0 && (x & (x - 1)) == 0;
 }
 
+macro next_power_of_2(x)
+{
+	$typeof(x) y = 1;
+	while (y < x) y += y;
+	return y;
+}