Add support for upper-case hex and binary output to #fmt.

Only works for uints at present. Necessitated the addition of _str.to_upper.

src/comp/front/extfmt.rs

@@ -246,6 +246,9 @@ fn pieces_to_expr(vec[piece] pieces, vec[@ast.expr] args) -> @ast.expr {
             case (ty_hex(_)) {
                 ret make_conv_call(arg.span, "uint", cnv, arg);
             }
+            case (ty_bits) {
+                ret make_conv_call(arg.span, "uint", cnv, arg);
+            }
             case (_) {
                 log unsupported;
                 fail;

src/lib/ExtFmt.rs

@@ -315,6 +315,12 @@ mod RT {
             case (ty_hex_lower) {
                 ret _uint.to_str(u, 16u);
             }
+            case (ty_hex_upper) {
+                ret _str.to_upper(_uint.to_str(u, 16u));
+            }
+            case (ty_bits) {
+                ret _uint.to_str(u, 2u);
+            }
         }
     }
 

src/lib/_str.rs

@@ -470,6 +470,24 @@ fn connect(vec[str] v, str sep) -> str {
     ret s;
 }
 
+// FIXME: This only handles ASCII
+fn to_upper(str s) -> str {
+    auto outstr = "";
+    auto ascii_a = 'a' as u8;
+    auto ascii_z = 'z' as u8;
+    auto diff = 32u8;
+    for (u8 byte in s) {
+        auto next;
+        if (ascii_a <= byte && byte <= ascii_z) {
+            next = byte - diff;
+        } else {
+            next = byte;
+        }
+        push_byte(outstr, next);
+    }
+    ret outstr;
+}
+
 
 // Local Variables:
 // mode: rust;

src/test/run-pass/lib-str.rs

@@ -89,6 +89,16 @@ fn test_connect() {
   t(vec("hi"), " ", "hi");
 }
 
+fn test_to_upper() {
+  // to_upper doesn't understand unicode yet,
+  // but we need to at least preserve it
+  auto unicode = "\u65e5\u672c";
+  auto input = "abcDEF" + unicode + "xyz:.;";
+  auto expected = "ABCDEF" + unicode + "XYZ:.;";
+  auto actual = _str.to_upper(input);
+  check (_str.eq(expected, actual));
+}
+
 
 fn main() {
   test_bytes_len();
@@ -98,4 +108,5 @@ fn main() {
   test_substr();
   test_concat();
   test_connect();
+  test_to_upper();
 }

src/test/run-pass/syntax-extension-fmt.rs

@@ -23,4 +23,6 @@ fn main() {
   test(#fmt("%b", false), "false");
   test(#fmt("%c", 'A'), "A");
   test(#fmt("%x", 0xff_u), "ff");
+  test(#fmt("%X", 0x12ab_u), "12AB");
+  test(#fmt("%t", 0b11010101_u), "11010101");
 }