Run the parser in a separate task

src/servo/parser/html.rs

@@ -1,3 +1,5 @@
+import comm::{port, chan};
+
 type parser = {
     mut lookahead: option<char_or_eof>,
     reader: io::reader
@@ -162,3 +164,20 @@ fn parser(reader: io::reader) -> parser {
     ret { mut lookahead: none, reader: reader };
 }
 
+fn spawn_parser_task(filename: str) -> port<token> {
+    let result_port = port();
+    let result_chan = chan(result_port);
+    task::spawn_listener::<()> {|_child_port|
+        let file_data = io::read_whole_file(filename).get();
+        let reader = io::bytes_reader(file_data);
+        let parser = parser(reader);
+
+        loop {
+            let token = parser.parse();
+            result_chan.send(token);
+            if token == to_eof { break; }
+        }
+    };
+    ret result_port;
+}
+

src/servo/servo.rs

@@ -16,7 +16,12 @@ fn parse(filename: str) {
 
 fn main(args: [str]) {
     if args.len() >= 2u {
-        parse(args[1]);
+        let p = html::spawn_parser_task(args[1]);
+        loop {
+            let token = p.recv();
+            io::println(#fmt("token: %?", token));
+            if token == html::to_eof { break; }
+        }
     }
 
     // The platform event handler thread