Move macros into their own crate

In preparation for procedural macros.

Makefile.in

@@ -9,6 +9,10 @@ LIB_TOP_SRC = $(VPATH)/src/html5.rs
 LIB_ALL_SRC = $(GEN_LIB_SRC) $(shell find $(VPATH)/src -type f -name '*.rs')
 LIB         = $(shell $(RUSTC) --crate-file-name "$(LIB_TOP_SRC)")
 
+MACROS_TOP_SRC = $(VPATH)/macros/mod.rs
+MACROS_ALL_SRC = $(shell find $(VPATH)/macros -type f -name '*.rs')
+MACROS          = $(shell $(RUSTC) --crate-file-name "$(MACROS_TOP_SRC)")
+
 EXT_TEST_TOP_SRC = $(VPATH)/test/mod.rs
 EXT_TEST_ALL_SRC = $(shell find $(VPATH)/test -type f -name '*.rs')
 
@@ -21,7 +25,10 @@ $(VPATH)/generated/char_ref_data.rs: $(VPATH)/codegen/gen-char-ref-data.py
 	mkdir -p $(dir $@)
 	$< $(VPATH) > $@
 
-$(LIB): $(LIB_ALL_SRC)
+$(MACROS): $(MACROS_ALL_SRC)
+	$(RUSTC) $(RUSTFLAGS) $(MACROS_TOP_SRC)
+
+$(LIB): $(MACROS) $(LIB_ALL_SRC)
 	$(RUSTC) $(RUSTFLAGS) $(LIB_TOP_SRC)
 
 tokenize-example: $(VPATH)/examples/tokenize-example.rs $(LIB)

src/macros.rs → macros/mod.rs

@@ -2,15 +2,20 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#[macro_escape];
+#[crate_id="html5-macros"];
+#[crate_type="dylib"];
 
+#[feature(macro_rules)];
+
+#[macro_export]
 macro_rules! unwrap_or_return( ($opt:expr, $retval:expr) => (
     match $opt {
         None => return $retval,
         Some(x) => x,
     }
 ))
 
+#[macro_export]
 macro_rules! test_eq( ($name:ident, $left:expr, $right:expr) => (
     #[test]
     fn $name() {

src/html5.rs

@@ -10,11 +10,12 @@
 #[phase(syntax)]
 extern crate phf_mac;
 
+#[phase(syntax)]
+extern crate macros = "html5-macros";
+
 extern crate phf;
 extern crate collections;
 
-mod macros;
-
 mod util {
     pub mod ascii;
     pub mod buffer_queue;