Make servo build again

52 files changed, 375 insertions, 316 deletions

diff --git a/src/rust-harfbuzz b/src/rust-harfbuzz
-Subproject f1670147011cee03a94c751d6d77a30c2330ee4
+Subproject 461dcedfb36240f3c82f1d193f8cb42c9528fe3
diff --git a/src/servo-gfx/compositor.rs b/src/servo-gfx/compositor.rs
index b419bebd0d7..f3820719f5d 100644
--- a/src/servo-gfx/compositor.rs
+++ b/src/servo-gfx/compositor.rs
@@ -1,7 +1,7 @@
 use azure::azure_hl::{DrawTarget};
 use geom::rect::Rect;
 
-struct LayerBuffer {
+pub struct LayerBuffer {
     draw_target: DrawTarget,
 
     // The rect in the containing RenderLayer that this represents.
@@ -13,7 +13,7 @@ struct LayerBuffer {
 
 /// A set of layer buffers. This is an atomic unit used to switch between the front and back
 /// buffers.
-struct LayerBufferSet {
+pub struct LayerBufferSet {
     buffers: ~[LayerBuffer]
 }
 
@@ -21,7 +21,7 @@ struct LayerBufferSet {
 The interface used to by the renderer to aquire draw targets for
 each rendered frame and submit them to be drawn to the display
 */
-trait Compositor {
+pub trait Compositor {
     fn begin_drawing(next_dt: pipes::Chan<LayerBufferSet>);
     fn draw(next_dt: pipes::Chan<LayerBufferSet>, +draw_me: LayerBufferSet);
 }
diff --git a/src/servo-gfx/display_list.rs b/src/servo-gfx/display_list.rs
index 49bab4d9ab0..bc1acfec228 100644
--- a/src/servo-gfx/display_list.rs
+++ b/src/servo-gfx/display_list.rs
@@ -95,7 +95,7 @@ trait DisplayListMethods {
     fn draw_into_context(ctx: &RenderContext);
 }
 
-impl DisplayList {
+pub impl DisplayList {
     static fn new() -> DisplayList {
         DisplayList { list: ~[] }
     }
diff --git a/src/servo-gfx/font.rs b/src/servo-gfx/font.rs
index a9cd0bce16a..d52940f11d1 100644
--- a/src/servo-gfx/font.rs
+++ b/src/servo-gfx/font.rs
@@ -43,7 +43,7 @@ pub trait FontHandleMethods {
 //
 // `new` should be part of trait FontHandleMethods.
 
-impl FontHandle {
+pub impl FontHandle {
     #[cfg(target_os = "macos")]
     static pub fn new_from_buffer(fctx: &native::FontContextHandle, buf: ~[u8], style: &SpecifiedFontStyle) -> Result<FontHandle, ()> {
         quartz::font::QuartzFontHandle::new_from_buffer(fctx, move buf, style)
@@ -56,7 +56,7 @@ impl FontHandle {
 }
 
 // Used to abstract over the shaper's choice of fixed int representation.
-type FractionalPixel = float;
+pub type FractionalPixel = float;
 
 pub type FontTableTag = u32;
 
@@ -80,11 +80,11 @@ pub type FontTable/& = quartz::font::QuartzFontTable;
 #[cfg(target_os = "linux")]
 pub type FontTable/& = freetype::font::FreeTypeFontTable;
 
-trait FontTableMethods {
+pub trait FontTableMethods {
     fn with_buffer(fn&(*u8, uint));
 }
 
-struct FontMetrics {
+pub struct FontMetrics {
     underline_size:   Au,
     underline_offset: Au,
     leading:          Au,
@@ -96,7 +96,7 @@ struct FontMetrics {
 }
 
 // TODO(Issue #200): use enum from CSS bindings for 'font-weight'
-enum CSSFontWeight {
+pub enum CSSFontWeight {
     FontWeight100,
     FontWeight200,
     FontWeight300,
@@ -239,7 +239,7 @@ pub impl FontGroup {
     }
 }
 
-struct RunMetrics {
+pub struct RunMetrics {
     // may be negative due to negative width (i.e., kerning of '.' in 'P.T.')
     advance_width: Au,
     ascent: Au, // nonzero
@@ -262,7 +262,7 @@ pub struct Font {
     backend: BackendType,
 }
 
-impl Font {
+pub impl Font {
     static fn new_from_buffer(ctx: &FontContext, buffer: ~[u8],
                               style: &SpecifiedFontStyle, backend: BackendType) -> Result<@Font, ()> {
 
@@ -395,9 +395,9 @@ pub impl Font : FontMethods {
         use azure::{AzDrawOptions,
                     AzGlyph,
                     AzGlyphBuffer};
-        use azure::bindgen::{AzCreateColorPattern,
-                             AzDrawTargetFillGlyphs,
-                             AzReleaseColorPattern};
+        use azure::azure::bindgen::{AzCreateColorPattern,
+                                    AzDrawTargetFillGlyphs,
+                                    AzReleaseColorPattern};
 
         let target = rctx.get_draw_target();
         let azfontref = self.get_azure_font();
diff --git a/src/servo-gfx/font_context.rs b/src/servo-gfx/font_context.rs
index 89cfb19d22c..4b230be7504 100644
--- a/src/servo-gfx/font_context.rs
+++ b/src/servo-gfx/font_context.rs
@@ -36,7 +36,7 @@ type FontContextHandle/& = quartz::font_context::QuartzFontContextHandle;
 #[cfg(target_os = "linux")]
 type FontContextHandle/& = freetype::font_context::FreeTypeFontContextHandle;
 
-trait FontContextHandleMethods {
+pub trait FontContextHandleMethods {
     pure fn clone(&const self) -> FontContextHandle;
     fn create_font_from_identifier(~str, UsedFontStyle) -> Result<FontHandle, ()>;
 }
diff --git a/src/servo-gfx/font_list.rs b/src/servo-gfx/font_list.rs
index ad8f1aafcb6..75991b9e044 100644
--- a/src/servo-gfx/font_list.rs
+++ b/src/servo-gfx/font_list.rs
@@ -22,7 +22,7 @@ pub impl FontListHandle {
     }
 }
 
-type FontFamilyMap = linear::LinearMap<~str, @FontFamily>;
+pub type FontFamilyMap = linear::LinearMap<~str, @FontFamily>;
 
 trait FontListHandleMethods {
     fn get_available_families(&const self, fctx: &native::FontContextHandle) -> FontFamilyMap;
@@ -132,7 +132,7 @@ pub impl FontFamily {
 
 // In the common case, each FontFamily will have a singleton FontEntry, or
 // it will have the standard four faces: Normal, Bold, Italic, BoldItalic.
-struct FontEntry {
+pub struct FontEntry {
     family: @FontFamily,
     face_name: ~str,
     priv weight: CSSFontWeight,
@@ -141,7 +141,7 @@ struct FontEntry {
     // TODO: array of OpenType features, etc.
 }
 
-impl FontEntry {
+pub impl FontEntry {
     static fn new(family: @FontFamily, handle: FontHandle) -> FontEntry {
         FontEntry {
             family: family,
diff --git a/src/servo-gfx/fontconfig/font_list.rs b/src/servo-gfx/fontconfig/font_list.rs
index 15b0d5f0e81..5242929b021 100644
--- a/src/servo-gfx/fontconfig/font_list.rs
+++ b/src/servo-gfx/fontconfig/font_list.rs
@@ -5,7 +5,7 @@ use fc = fontconfig;
 use ft = freetype;
 
 use gfx_font::FontHandle;
-use gfx_font_list::{FontEntry, FontFamily};
+use gfx_font_list::{FontEntry, FontFamily, FontFamilyMap};
 
 use core::dvec::DVec;
 use core::send_map::{linear, SendMap};
@@ -19,9 +19,11 @@ pub impl FontconfigFontListHandle {
         FontconfigFontListHandle { fctx: () }
     }
 
-    fn get_available_families(&const self,
-                              _fctx: &native::FontContextHandle)
-                           -> linear::LinearMap<~str, @FontFamily> {
+    fn get_available_families() -> FontFamilyMap {
         fail;
     }
+
+    fn load_variations_for_family(family: @FontFamily) {
+        fail
+    }
 }
diff --git a/src/servo-gfx/freetype/font.rs b/src/servo-gfx/freetype/font.rs
index ea4833a4673..7f44192a48e 100644
--- a/src/servo-gfx/freetype/font.rs
+++ b/src/servo-gfx/freetype/font.rs
@@ -6,6 +6,8 @@ use gfx_font::{
     FontHandle,
     FontHandleMethods,
     FontMetrics,
+    FontTable,
+    FontTableMethods,
     FontTableTag,
     FractionalPixel,
     SpecifiedFontStyle,
@@ -15,7 +17,7 @@ use geometry::Au;
 use text::glyph::GlyphIndex;
 use text::util::{float_to_fixed, fixed_to_float};
 
-use freetype::{
+use freetype::freetype::{
     FTErrorMethods,
     FT_Error,
     FT_F26Dot6,
@@ -30,7 +32,7 @@ use freetype::{
     FT_UInt,
     FT_Size_Metrics,
 };
-use freetype::bindgen::{
+use freetype::freetype::bindgen::{
     FT_Init_FreeType,
     FT_Done_FreeType,
     FT_New_Memory_Face,
@@ -48,6 +50,16 @@ fn fixed_to_float_ft(f: i32) -> float {
     fixed_to_float(6, f)
 }
 
+pub struct FreeTypeFontTable {
+    bogus: ()
+}
+
+pub impl FreeTypeFontTable : FontTableMethods {
+    fn with_buffer(blk: fn&(*u8, uint)) {
+        fail
+    }
+}
+
 pub struct FreeTypeFontHandle {
     // The font binary. This must stay valid for the lifetime of the font,
     // if the font is created using FT_Memory_Face.
@@ -184,7 +196,7 @@ pub impl FreeTypeFontHandle : FontHandleMethods {
         }
     }
 
-    fn get_table_for_tag(_tag: FontTableTag) -> Option<~[u8]> {
+    fn get_table_for_tag(_tag: FontTableTag) -> Option<FontTable> {
         fail;
     }
 }
diff --git a/src/servo-gfx/freetype/font_context.rs b/src/servo-gfx/freetype/font_context.rs
index 75cfad24d82..a190dff57be 100644
--- a/src/servo-gfx/freetype/font_context.rs
+++ b/src/servo-gfx/freetype/font_context.rs
@@ -1,11 +1,11 @@
 extern mod freetype;
 
-use freetype::{
+use freetype::freetype::{
     FTErrorMethods,
     FT_Error,
     FT_Library,
 };
-use freetype::bindgen::{
+use freetype::freetype::bindgen::{
     FT_Init_FreeType, 
     FT_Done_FreeType
 };
@@ -38,6 +38,10 @@ pub impl FreeTypeFontContextHandle {
 }
 
 pub impl FreeTypeFontContextHandle : FontContextHandleMethods {
+    pure fn clone(&const self) -> FreeTypeFontContextHandle {
+        fail
+    }
+
     fn create_font_from_identifier(_identifier: ~str, _style: UsedFontStyle)
         -> Result<FontHandle, ()> {
 
diff --git a/src/servo-gfx/opts.rs b/src/servo-gfx/opts.rs
index 477baf04927..6af78da8061 100644
--- a/src/servo-gfx/opts.rs
+++ b/src/servo-gfx/opts.rs
@@ -41,12 +41,12 @@ pub fn from_cmdline_args(args: &[~str]) -> Opts {
         copy opt_match.free
     };
 
-    let render_mode = match getopts::opt_maybe_str(copy opt_match, ~"o") {
+    let render_mode = match getopts::opt_maybe_str(&opt_match, ~"o") {
       Some(move output_file) => { Png(move output_file) }
       None => { Screen }
     };
 
-    let render_backend = match getopts::opt_maybe_str(copy opt_match, ~"r") {
+    let render_backend = match getopts::opt_maybe_str(&opt_match, ~"r") {
         Some(move backend_str) => {
             if backend_str == ~"direct2d" {
                 Direct2DBackend
@@ -65,12 +65,12 @@ pub fn from_cmdline_args(args: &[~str]) -> Opts {
         None => CairoBackend
     };
 
-    let tile_size: uint = match getopts::opt_maybe_str(copy opt_match, ~"s") {
+    let tile_size: uint = match getopts::opt_maybe_str(&opt_match, ~"s") {
         Some(move tile_size_str) => from_str::from_str(tile_size_str).get(),
         None => 512,
     };
 
-    let n_render_threads: uint = match getopts::opt_maybe_str(move opt_match, ~"t") {
+    let n_render_threads: uint = match getopts::opt_maybe_str(&opt_match, ~"t") {
         Some(move n_render_threads_str) => from_str::from_str(n_render_threads_str).get(),
         None => 1,      // FIXME: Number of cores.
     };
diff --git a/src/servo-gfx/render_context.rs b/src/servo-gfx/render_context.rs
index 2d77f52cf6c..6884a08277d 100644
--- a/src/servo-gfx/render_context.rs
+++ b/src/servo-gfx/render_context.rs
@@ -16,7 +16,7 @@ use geom::rect::Rect;
 use geom::size::Size2D;
 use std::arc::ARC;
 
-struct RenderContext {
+pub struct RenderContext {
     canvas: &LayerBuffer,
     font_ctx: @FontContext,
     opts: &Opts
diff --git a/src/servo-gfx/render_task.rs b/src/servo-gfx/render_task.rs
index 4c42055e321..cf01d889ae8 100644
--- a/src/servo-gfx/render_task.rs
+++ b/src/servo-gfx/render_task.rs
@@ -106,7 +106,7 @@ impl<C: Compositor Send> Renderer<C> {
         let layer_buffer_set_cell = Cell(move layer_buffer_set);
         let layer_buffer_set_channel_cell = Cell(move layer_buffer_set_channel);
 
-        #debug("renderer: rendering");
+        debug!("renderer: rendering");
 
         do util::time::time(~"rendering") {
             let layer_buffer_set = layer_buffer_set_cell.take();
@@ -150,7 +150,7 @@ impl<C: Compositor Send> Renderer<C> {
                 }
             };
 
-            #debug("renderer: returning surface");
+            debug!("renderer: returning surface");
             self.compositor.draw(move layer_buffer_set_channel, move layer_buffer_set);
         }
     }
diff --git a/src/servo-gfx/resource/http_loader.rs b/src/servo-gfx/resource/http_loader.rs
index 8c20c7eb559..f8acb1734b5 100644
--- a/src/servo-gfx/resource/http_loader.rs
+++ b/src/servo-gfx/resource/http_loader.rs
@@ -10,7 +10,7 @@ pub fn factory(url: Url, progress_chan: Chan<ProgressMsg>) {
     assert url.scheme == ~"http";
 
     do spawn |move url| {
-        #debug("http_loader: requesting via http: %?", copy url);
+        debug!("http_loader: requesting via http: %?", copy url);
         let request = uv_http_request(copy url);
         let errored = @mut false;
         do request.begin |event, copy url| {
@@ -18,13 +18,13 @@ pub fn factory(url: Url, progress_chan: Chan<ProgressMsg>) {
             match event {
                 http_client::Status(*) => { }
                 http_client::Payload(data) => {
-                    #debug("http_loader: got data from %?", url);
+                    debug!("http_loader: got data from %?", url);
                     let mut junk = None;
                     *data <-> junk;
                     progress_chan.send(Payload(option::unwrap(move junk)));
                 }
                 http_client::Error(*) => {
-                    #debug("http_loader: error loading %?", url);
+                    debug!("http_loader: error loading %?", url);
                     *errored = true;
                     progress_chan.send(Done(Err(())));
                 }
diff --git a/src/servo-gfx/resource/image_cache_task.rs b/src/servo-gfx/resource/image_cache_task.rs
index eb605b6e05e..a0840918c0c 100644
--- a/src/servo-gfx/resource/image_cache_task.rs
+++ b/src/servo-gfx/resource/image_cache_task.rs
@@ -178,7 +178,7 @@ impl ImageCache {
 
             for msg_handlers.each |handler| { (*handler)(&msg) }
 
-            #debug("image_cache_task: received: %?", msg);
+            debug!("image_cache_task: received: %?", msg);
 
             match move msg {
                 Prefetch(move url) => self.prefetch(move url),
@@ -249,7 +249,7 @@ impl ImageCache {
 
             do spawn |move to_cache, move url_cell| {
                 let url = url_cell.take();
-                #debug("image_cache_task: started fetch for %s", url.to_str());
+                debug!("image_cache_task: started fetch for %s", url.to_str());
 
                 let image = load_image_data(copy url, resource_task);
 
@@ -259,7 +259,7 @@ impl ImageCache {
                     Err(())
                 };
                 to_cache.send(StorePrefetchedImageData(copy url, move result));
-                #debug("image_cache_task: ended fetch for %s", (copy url).to_str());
+                debug!("image_cache_task: ended fetch for %s", (copy url).to_str());
             }
 
             self.set_state(move url, Prefetching(DoNotDecode));
@@ -327,7 +327,7 @@ impl ImageCache {
 
                 do spawn |move url_cell, move decode, move data, move to_cache| {
                     let url = url_cell.take();
-                    #debug("image_cache_task: started image decode for %s", url.to_str());
+                    debug!("image_cache_task: started image decode for %s", url.to_str());
                     let image = decode(data);
                     let image = if image.is_some() {
                         Some(ARC(~option::unwrap(move image)))
@@ -335,7 +335,7 @@ impl ImageCache {
                         None
                     };
                     to_cache.send(StoreImage(copy url, move image));
-                    #debug("image_cache_task: ended image decode for %s", url.to_str());
+                    debug!("image_cache_task: ended image decode for %s", url.to_str());
                 }
 
                 self.set_state(move url, Decoding);
diff --git a/src/servo-gfx/resource/resource_task.rs b/src/servo-gfx/resource/resource_task.rs
index d490214a9d6..444c52f95b2 100644
--- a/src/servo-gfx/resource/resource_task.rs
+++ b/src/servo-gfx/resource/resource_task.rs
@@ -100,11 +100,11 @@ impl ResourceManager {
 
         match self.get_loader_factory(&url) {
             Some(loader_factory) => {
-                #debug("resource_task: loading url: %s", to_str(copy url));
+                debug!("resource_task: loading url: %s", to_str(copy url));
                 loader_factory(move url, progress_chan);
             }
             None => {
-                #debug("resource_task: no loader for scheme %s", url.scheme);
+                debug!("resource_task: no loader for scheme %s", url.scheme);
                 progress_chan.send(Done(Err(())));
             }
         }
diff --git a/src/servo-gfx/servo_gfx.rc b/src/servo-gfx/servo_gfx.rc
index 71a107e34ab..9c2d670ec65 100644
--- a/src/servo-gfx/servo_gfx.rc
+++ b/src/servo-gfx/servo_gfx.rc
@@ -36,58 +36,68 @@ pub mod native;
 
 #[cfg(target_os = "macos")]
 pub mod quartz {
+    #[path = "quartz/font.rs"]
     pub mod font;
+    #[path = "quartz/font_context.rs"]
     pub mod font_context;
+    #[path = "quartz/font_list.rs"]
     pub mod font_list;
 }
 
 #[cfg(target_os = "linux")]
 pub mod freetype {
+    #[path = "freetype/font.rs"]
     pub mod font;
+    #[path = "freetype/font_context.rs"]
     pub mod font_context;
 }
 
 #[cfg(target_os = "linux")]
 pub mod fontconfig {
+    #[path = "fontconfig/font_list.rs"]
     pub mod font_list;
 }
 
 // Images
 pub mod image {
+    #[path = "image/base.rs"]
     pub mod base;
     pub mod encode {
+        #[path = "image/encode/tga.rs"]
         pub mod tga;
     }
+    #[path = "image/holder.rs"]
     pub mod holder;
 }
 
 // Text
-pub mod text {
-    pub mod glyph;
-    pub mod text_run;
-    pub mod util;
-    pub mod shaper;
-
-    // Below are the actual platform-specific parts.
-    pub mod harfbuzz {
-        pub mod shaper;
-    }
-}
+#[path = "text/mod.rs"]
+pub mod text;
 
 // FIXME: Blech. This does not belong in the GFX module.
 pub mod resource {
+    #[path = "resource/file_loader.rs"]
     pub mod file_loader;
+    #[path = "resource/http_loader.rs"]
     pub mod http_loader;
+    #[path = "resource/image_cache_task.rs"]
     pub mod image_cache_task;
+    #[path = "resource/local_image_cache.rs"]
     pub mod local_image_cache;
+    #[path = "resource/resource_task.rs"]
     pub mod resource_task;
 }
 
 pub mod util {
+    #[path = "util/cache.rs"]
     pub mod cache;
+    #[path = "util/range.rs"]
     pub mod range;
+    #[path = "util/time.rs"]
     pub mod time;
+    #[path = "util/url.rs"]
     pub mod url;
+    #[path = "util/vec.rs"]
     pub mod vec;
 }
 
@@ -95,3 +105,7 @@ use servo_util = util;
 use gfx_font = font;
 use gfx_font_context = font_context;
 use gfx_font_list = font_list;
+pub use servo_gfx_font = font;
+pub use servo_gfx_font_list = font_list;
+pub use servo_gfx_util = util;
+
diff --git a/src/servo-gfx/servo_gfx.rs b/src/servo-gfx/servo_gfx.rs
deleted file mode 100644
index 013bab1a820..00000000000
--- a/src/servo-gfx/servo_gfx.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-// FIXME: Blech. We need crate-relative imports.
-pub use servo_gfx_font = font;
-pub use servo_gfx_font_list = font_list;
-pub use servo_gfx_util = util;
-
diff --git a/src/servo-gfx/text/glyph.rs b/src/servo-gfx/text/glyph.rs
index 76f5594b066..f88be885fa6 100644
--- a/src/servo-gfx/text/glyph.rs
+++ b/src/servo-gfx/text/glyph.rs
@@ -29,10 +29,10 @@ struct GlyphEntry {
 pure fn GlyphEntry(value: u32) -> GlyphEntry { GlyphEntry { value: value } }
 
 /// The index of a particular glyph within a font
-type GlyphIndex = u32;
+pub type GlyphIndex = u32;
 
 // TODO: unify with bit flags?
-enum BreakType {
+pub enum BreakType {
     BreakTypeNone,
     BreakTypeNormal,
     BreakTypeHyphen
@@ -426,7 +426,7 @@ impl DetailedGlyphStore {
 
 // This struct is used by GlyphStore clients to provide new glyph data.
 // It should be allocated on the stack and passed by reference to GlyphStore.
-struct GlyphData {
+pub struct GlyphData {
     index: GlyphIndex,
     advance: Au,
     offset: Point2D<Au>,
@@ -435,7 +435,7 @@ struct GlyphData {
     ligature_start: bool,
 }
 
-pure fn GlyphData(index: GlyphIndex, 
+pub pure fn GlyphData(index: GlyphIndex, 
                    advance: Au,
                    offset: Option<Point2D<Au>>,
                    is_missing: bool,
@@ -505,13 +505,13 @@ impl GlyphInfo {
 }
 
 // Public data structure and API for storing and retrieving glyph data
-struct GlyphStore {
+pub struct GlyphStore {
     // we use a DVec here instead of a mut vec, since this is much safer.
     entry_buffer: ~[GlyphEntry],
     detail_store: DetailedGlyphStore,
 }
 
-impl GlyphStore {
+pub impl GlyphStore {
     // Initializes the glyph store, but doesn't actually shape anything.
     // Use the set_glyph, set_glyphs() methods to store glyph data.
     static fn new(length: uint) -> GlyphStore {
diff --git a/src/servo-gfx/text/harfbuzz/shaper.rs b/src/servo-gfx/text/harfbuzz/shaper.rs
index faf06efa24f..4b501cad3d5 100644
--- a/src/servo-gfx/text/harfbuzz/shaper.rs
+++ b/src/servo-gfx/text/harfbuzz/shaper.rs
@@ -209,6 +209,9 @@ pub impl HarfbuzzShaper : ShaperMethods {
         self.save_glyph_results(text, glyphs, hb_buffer);
         hb_buffer_destroy(hb_buffer);
     }
+}
+
+pub impl HarfbuzzShaper {
 
     priv fn save_glyph_results(text: &str, glyphs: &mut GlyphStore, buffer: *hb_buffer_t) {
         let glyph_data = ShapedGlyphData::new(buffer);
@@ -239,8 +242,9 @@ pub impl HarfbuzzShaper : ShaperMethods {
             let mut i = 0u;
             while i < byte_max {
                 byteToGlyph[i] = NO_GLYPH;
-                let {ch, next} = str::char_range_at(text, i); ignore(ch);
-                i = next;
+                let range = str::char_range_at(text, i);
+                ignore(range.ch);
+                i = range.next;
             }
         }
         
@@ -260,9 +264,9 @@ pub impl HarfbuzzShaper : ShaperMethods {
         debug!("(char idx): char->(glyph index):");
         let mut i = 0u;
         while i < byte_max {
-            let {ch, next} = str::char_range_at(text, i);
-            debug!("%u: %? --> %d", i, ch, byteToGlyph[i] as int);
-            i = next;
+            let range = str::char_range_at(text, i);
+            debug!("%u: %? --> %d", i, range.ch, byteToGlyph[i] as int);
+            i = range.next;
         }
 
         // some helpers
@@ -285,16 +289,18 @@ pub impl HarfbuzzShaper : ShaperMethods {
             // find a range of chars corresponding to this glyph, plus
             // any trailing chars that do not have associated glyphs.
             while char_byte_span.end() < byte_max {
-                let {ch, next} = str::char_range_at(text, char_byte_span.end()); ignore(ch);
-                char_byte_span.extend_to(next);
+                let range = str::char_range_at(text, char_byte_span.end());
+                ignore(range.ch);
+                char_byte_span.extend_to(range.next);
 
                 debug!("Processing char byte span: off=%u, len=%u for glyph idx=%u",
                        char_byte_span.begin(), char_byte_span.length(), glyph_span.begin());
 
                 while char_byte_span.end() != byte_max && byteToGlyph[char_byte_span.end()] == NO_GLYPH {
                     debug!("Extending char byte span to include byte offset=%u with no associated glyph", char_byte_span.end());
-                    let {ch, next} = str::char_range_at(text, char_byte_span.end()); ignore(ch);
-                    char_byte_span.extend_to(next);
+                    let range = str::char_range_at(text, char_byte_span.end());
+                    ignore(range.ch);
+                    char_byte_span.extend_to(range.next);
                 }
 
                 // extend glyph range to max glyph index covered by char_span,
@@ -356,8 +362,9 @@ pub impl HarfbuzzShaper : ShaperMethods {
             // extend, clipping at end of text range.
             while covered_byte_span.end() < byte_max 
                 && byteToGlyph[covered_byte_span.end()] == NO_GLYPH {
-                let {ch, next} = str::char_range_at(text, covered_byte_span.end()); ignore(ch);
-                covered_byte_span.extend_to(next);
+                let range = str::char_range_at(text, covered_byte_span.end());
+                ignore(range.ch);
+                covered_byte_span.extend_to(range.next);
             }
 
             if covered_byte_span.begin() >= byte_max {
@@ -400,8 +407,9 @@ pub impl HarfbuzzShaper : ShaperMethods {
                 // set the other chars, who have no glyphs
                 let mut i = covered_byte_span.begin();
                 loop {
-                    let {ch, next} = str::char_range_at(text, i); ignore(ch);
-                    i = next;
+                    let range = str::char_range_at(text, i);
+                    ignore(range.ch);
+                    i = range.next;
                     if i >= covered_byte_span.end() { break; }
                     char_idx += 1;
                     glyphs.add_nonglyph_for_char_index(char_idx, false, false);
diff --git a/src/servo-gfx/text.rs b/src/servo-gfx/text/mod.rs
index 6b3fdd4ff0a..95eb34425e6 100644
--- a/src/servo-gfx/text.rs
+++ b/src/servo-gfx/text/mod.rs
@@ -7,3 +7,14 @@ servo.rc. This is not ideal and may be changed in the future. */
 pub use shaper::Shaper;
 pub use text_run::TextRun;
 pub use text_run::SendableTextRun;
+
+pub mod glyph;
+pub mod text_run;
+pub mod util;
+pub mod shaper;
+
+// Below are the actual platform-specific parts.
+pub mod harfbuzz {
+    #[path = "harfbuzz/shaper.rs"]
+    pub mod shaper;
+}
diff --git a/src/servo-gfx/text/shaper.rs b/src/servo-gfx/text/shaper.rs
index 319d5d3bdd0..46e499f6ad0 100644
--- a/src/servo-gfx/text/shaper.rs
+++ b/src/servo-gfx/text/shaper.rs
@@ -9,14 +9,14 @@ use text::glyph::GlyphStore;
 
 pub type Shaper/& = harfbuzz::shaper::HarfbuzzShaper;
 
-trait ShaperMethods {
+pub trait ShaperMethods {
     fn shape_text(text: &str, glyphs: &mut GlyphStore);
 
 }
 
 // TODO(Issue #163): this is a workaround for static methods and
 // typedefs not working well together. It should be removed.
-impl Shaper {
+pub impl Shaper {
     static pub fn new(font: @Font) -> Shaper {
         harfbuzz::shaper::HarfbuzzShaper::new(font)
     }
diff --git a/src/servo-gfx/text/text_run.rs b/src/servo-gfx/text/text_run.rs
index 60acae0d6b5..c9eac0c1df1 100644
--- a/src/servo-gfx/text/text_run.rs
+++ b/src/servo-gfx/text/text_run.rs
@@ -42,7 +42,7 @@ impl SendableTextRun {
     }
 }
 
-impl TextRun {
+pub impl TextRun {
     static fn new(font: @Font, text: ~str) -> TextRun {
         let mut glyph_store = GlyphStore::new(str::char_len(text));
         TextRun::compute_potential_breaks(text, &mut glyph_store);
@@ -63,7 +63,9 @@ impl TextRun {
         let mut char_j = 0u;
         let mut prev_is_whitespace = false;
         while byte_i < text.len() {
-            let {ch, next} = str::char_range_at(text, byte_i);
+            let range = str::char_range_at(text, byte_i);
+            let ch = range.ch;
+            let next = range.next;
             // set char properties.
             match ch {
                 ' '  => { glyphs.set_char_is_space(char_j); },
diff --git a/src/servo-gfx/util/time.rs b/src/servo-gfx/util/time.rs
index a62626b5284..d96881ad258 100644
--- a/src/servo-gfx/util/time.rs
+++ b/src/servo-gfx/util/time.rs
@@ -7,7 +7,7 @@ pub fn time<T>(msg: &str, callback: fn() -> T) -> T{
     let end_time = precise_time_ns();
     let ms = ((end_time - start_time) / 1000000u64) as uint;
     if ms >= 5 {
-        #debug("%s took %u ms", msg, ms);
+        debug!("%s took %u ms", msg, ms);
     }
     return move val;
 }
diff --git a/src/servo-gfx/util/url.rs b/src/servo-gfx/util/url.rs
index d2e4eb9ccd3..6a3e25a0d55 100644
--- a/src/servo-gfx/util/url.rs
+++ b/src/servo-gfx/util/url.rs
@@ -22,7 +22,7 @@ pub fn make_url(str_url: ~str, current_url: Option<Url>) -> Url {
             ~"file://" + os::getcwd().push(str_url).to_str()
         } else {
             let current_url = current_url.get();
-            #debug("make_url: current_url: %?", current_url);
+            debug!("make_url: current_url: %?", current_url);
             if current_url.path.is_empty() || current_url.path.ends_with("/") {
                 current_url.scheme + "://" + current_url.host + "/" + str_url
             } else {
@@ -47,7 +47,7 @@ mod make_url_tests {
     fn should_create_absolute_file_url_if_current_url_is_none_and_str_url_looks_filey() {
         let file = ~"local.html";
         let url = make_url(move file, None);
-        #debug("url: %?", url);
+        debug!("url: %?", url);
         assert url.scheme == ~"file";
         assert url.path.contains(os::getcwd().to_str());
     }
diff --git a/src/servo/content/content_task.rs b/src/servo/content/content_task.rs
index bb41b96606c..4098a1d804e 100644
--- a/src/servo/content/content_task.rs
+++ b/src/servo/content/content_task.rs
@@ -48,7 +48,7 @@ pub enum PingMsg {
 
 pub type ContentTask = pipes::SharedChan<ControlMsg>;
 
-fn ContentTask(layout_task: LayoutTask,
+pub fn ContentTask(layout_task: LayoutTask,
                dom_event_port: pipes::Port<Event>,
                dom_event_chan: pipes::SharedChan<Event>,
                resource_task: ResourceTask,
@@ -102,7 +102,7 @@ pub struct Content {
     mut damage: Damage,
 }
 
-fn Content(layout_task: LayoutTask, 
+pub fn Content(layout_task: LayoutTask, 
            control_port: pipes::Port<ControlMsg>,
            control_chan: pipes::SharedChan<ControlMsg>,
            resource_task: ResourceTask,
diff --git a/src/servo/dom/bindings/document.rs b/src/servo/dom/bindings/document.rs
index 622e0c5360b..7b397ed9a1d 100644
--- a/src/servo/dom/bindings/document.rs
+++ b/src/servo/dom/bindings/document.rs
@@ -81,7 +81,7 @@ unsafe fn unwrap(obj: *JSObject) -> *rust_box<Document> {
 }
 
 extern fn finalize(_fop: *JSFreeOp, obj: *JSObject) {
-    #debug("document finalize!");
+    debug!("document finalize!");
     unsafe {
         let val = JS_GetReservedSlot(obj, 0);
         let _doc: @Document = cast::reinterpret_cast(&RUST_JSVAL_TO_PRIVATE(val));
diff --git a/src/servo/dom/bindings/element.rs b/src/servo/dom/bindings/element.rs
index e2748a10673..7a4d2ef1abc 100644
--- a/src/servo/dom/bindings/element.rs
+++ b/src/servo/dom/bindings/element.rs
@@ -23,7 +23,7 @@ use node::unwrap;
 
 
 extern fn finalize(_fop: *JSFreeOp, obj: *JSObject) {
-    #debug("element finalize!");
+    debug!("element finalize!");
     unsafe {
         let val = JS_GetReservedSlot(obj, 0);
         let _node: ~NodeBundle = cast::reinterpret_cast(&RUST_JSVAL_TO_PRIVATE(val));
diff --git a/src/servo/dom/bindings/node.rs b/src/servo/dom/bindings/node.rs
index e3458eeff84..e0697deb7ca 100644
--- a/src/servo/dom/bindings/node.rs
+++ b/src/servo/dom/bindings/node.rs
@@ -61,19 +61,19 @@ pub fn create(cx: *JSContext, node: Node, scope: NodeScope) -> jsobj unsafe {
     }
 }
 
-struct NodeBundle {
+pub struct NodeBundle {
     node: Node,
     scope: NodeScope,
 }
 
-fn NodeBundle(n: Node, s: NodeScope) -> NodeBundle {
+pub fn NodeBundle(n: Node, s: NodeScope) -> NodeBundle {
     NodeBundle {
         node : n,
         scope : s
     }
 }
 
-unsafe fn unwrap(obj: *JSObject) -> *rust_box<NodeBundle> {
+pub unsafe fn unwrap(obj: *JSObject) -> *rust_box<NodeBundle> {
     let val = js::GetReservedSlot(obj, 0);
     cast::reinterpret_cast(&JSVAL_TO_PRIVATE(val))
 }
diff --git a/src/servo/dom/bindings/utils.rs b/src/servo/dom/bindings/utils.rs
index da08350b775..86824a5c6c0 100644
--- a/src/servo/dom/bindings/utils.rs
+++ b/src/servo/dom/bindings/utils.rs
@@ -12,27 +12,27 @@ use js::glue::bindgen::*;
 use ptr::null;
 use content::content_task::{Content, task_from_context};
 
-enum DOMString {
+pub enum DOMString {
     str(~str),
     null_string
 }
 
-type rust_box<T> = {rc: uint, td: *sys::TypeDesc, next: *(), prev: *(), payload: T};
+pub type rust_box<T> = {rc: uint, td: *sys::TypeDesc, next: *(), prev: *(), payload: T};
 
-unsafe fn squirrel_away<T>(x: @T) -> *rust_box<T> {
+pub unsafe fn squirrel_away<T>(x: @T) -> *rust_box<T> {
     let y: *rust_box<T> = cast::reinterpret_cast(&x);
     cast::forget(x);
     y
 }
 
-unsafe fn squirrel_away_unique<T>(x: ~T) -> *rust_box<T> {
+pub unsafe fn squirrel_away_unique<T>(x: ~T) -> *rust_box<T> {
     let y: *rust_box<T> = cast::reinterpret_cast(&x);
     cast::forget(move x);
     y
 }
 
 //XXX very incomplete
-fn jsval_to_str(cx: *JSContext, v: JSVal) -> Result<~str, ()> {
+pub fn jsval_to_str(cx: *JSContext, v: JSVal) -> Result<~str, ()> {
     let jsstr;
     if RUST_JSVAL_IS_STRING(v) == 1 {
         jsstr = RUST_JSVAL_TO_STRING(v)
@@ -55,7 +55,7 @@ fn jsval_to_str(cx: *JSContext, v: JSVal) -> Result<~str, ()> {
     }
 }
 
-unsafe fn domstring_to_jsval(cx: *JSContext, string: &DOMString) -> JSVal {
+pub unsafe fn domstring_to_jsval(cx: *JSContext, string: &DOMString) -> JSVal {
     match *string {
       null_string => {
         JSVAL_NULL
diff --git a/src/servo/dom/bindings/window.rs b/src/servo/dom/bindings/window.rs
index b8748e6f05f..f28508c2e90 100644
--- a/src/servo/dom/bindings/window.rs
+++ b/src/servo/dom/bindings/window.rs
@@ -57,7 +57,7 @@ unsafe fn unwrap(obj: *JSObject) -> *rust_box<Window> {
 }
 
 extern fn finalize(_fop: *JSFreeOp, obj: *JSObject) {
-    #debug("finalize!");
+    debug!("finalize!");
     unsafe {
         let val = JS_GetReservedSlot(obj, 0);
         let _: @Window = cast::reinterpret_cast(&RUST_JSVAL_TO_PRIVATE(val));
diff --git a/src/servo/dom/cow.rs b/src/servo/dom/cow.rs
index 32c7ea1080c..fdcc01be1ba 100644
--- a/src/servo/dom/cow.rs
+++ b/src/servo/dom/cow.rs
@@ -224,7 +224,7 @@ impl<T:Copy Send,A> Scope<T,A> {
         let const_read_ptr = ptr::const_offset(h.read_ptr(), 0);
         let const_write_ptr = ptr::const_offset(h.write_ptr(), 0);
         if self.d.layout_active && const_read_ptr == const_write_ptr {
-            #debug["marking handle %? as dirty", h];
+            debug!("marking handle %? as dirty", h);
             h.set_write_ptr(cast::reinterpret_cast(&self.clone(h.read_ptr())));
             h.set_next_dirty(self.d.first_dirty);
             self.d.first_dirty = *h;
diff --git a/src/servo/dom/document.rs b/src/servo/dom/document.rs
index df9e8b6a485..d010b6e19d2 100644
--- a/src/servo/dom/document.rs
+++ b/src/servo/dom/document.rs
@@ -2,12 +2,12 @@ use newcss::stylesheet::Stylesheet;
 use dom::node::{NodeScope, Node};
 use std::arc::ARC;
 
-struct Document {
+pub struct Document {
     root: Node,
     scope: NodeScope,
 }
 
-fn Document(root: Node, scope: NodeScope) -> Document {
+pub fn Document(root: Node, scope: NodeScope) -> Document {
     Document {
         root : root,
         scope : scope,
diff --git a/src/servo/dom/element.rs b/src/servo/dom/element.rs
index 272f1c54b88..c489cd9ad72 100644
--- a/src/servo/dom/element.rs
+++ b/src/servo/dom/element.rs
@@ -4,7 +4,7 @@ use dvec::DVec;
 use geom::size::Size2D;
 use std::net::url::Url;
 
-struct ElementData {
+pub struct ElementData {
     tag_name: ~str,
     kind: ~ElementKind,
     attrs: DVec<~Attr>,
@@ -43,7 +43,7 @@ impl ElementData {
     }
 }
 
-fn ElementData(tag_name: ~str, kind: ~ElementKind) -> ElementData {
+pub fn ElementData(tag_name: ~str, kind: ~ElementKind) -> ElementData {
     ElementData {
         tag_name : move tag_name,
         kind : move kind,
@@ -51,29 +51,29 @@ fn ElementData(tag_name: ~str, kind: ~ElementKind) -> ElementData {
     }
 }
 
-struct Attr {
+pub struct Attr {
     name: ~str,
     value: ~str,
 }
 
-fn Attr(name: ~str, value: ~str) -> Attr {
+pub fn Attr(name: ~str, value: ~str) -> Attr {
     Attr {
         name : move name,
         value : move value,
     }
 }
 
-fn HTMLImageData() -> HTMLImageData {
+pub fn HTMLImageData() -> HTMLImageData {
     HTMLImageData {
         image: None
     }
 }
 
-struct HTMLImageData {
+pub struct HTMLImageData {
     mut image: Option<Url>
 }
 
-enum HeadingLevel {
+pub enum HeadingLevel {
     Heading1,
     Heading2,
     Heading3,
@@ -82,7 +82,7 @@ enum HeadingLevel {
     Heading6,
 }
 
-enum ElementKind {
+pub enum ElementKind {
     HTMLAnchorElement,
     HTMLAsideElement,
     HTMLBRElement,
diff --git a/src/servo/dom/event.rs b/src/servo/dom/event.rs
index d5e45ca01d9..f3242c93927 100644
--- a/src/servo/dom/event.rs
+++ b/src/servo/dom/event.rs
@@ -1,4 +1,4 @@
-enum Event {
+pub enum Event {
     ResizeEvent(uint, uint, pipes::Chan<()>),
     ReflowEvent        
 }
diff --git a/src/servo/dom/node.rs b/src/servo/dom/node.rs
index d3460de023d..bc11acb8d46 100644
--- a/src/servo/dom/node.rs
+++ b/src/servo/dom/node.rs
@@ -16,15 +16,15 @@ use ptr::null;
 use std::arc::ARC;
 use util::tree;
 
-enum NodeData = {
+pub enum NodeData = {
     tree: tree::Tree<Node>,
     kind: ~NodeKind,
 };
 
 /* The tree holding Nodes (read-only) */
-enum NodeTree { NodeTree }
+pub enum NodeTree { NodeTree }
 
-impl NodeTree : tree::ReadMethods<Node> {
+impl NodeTree {
     fn each_child(node: &Node, f: fn(&Node) -> bool) {
         tree::each_child(&self, node, f)
     }
@@ -32,7 +32,9 @@ impl NodeTree : tree::ReadMethods<Node> {
     fn get_parent(node: &Node) -> Option<Node> {
         tree::get_parent(&self, node)
     }
+}
 
+impl NodeTree : tree::ReadMethods<Node> {
     fn with_tree_fields<R>(n: &Node, f: fn(&tree::Tree<Node>) -> R) -> R {
         n.read(|n| f(&n.tree))
     }
@@ -91,14 +93,14 @@ pub enum NodeKind {
     Text(~str)
 }
 
-struct DoctypeData {
+pub struct DoctypeData {
     name: ~str,
     public_id: Option<~str>,
     system_id: Option<~str>,
     force_quirks: bool
 }
 
-fn DoctypeData(name: ~str, public_id: Option<~str>,
+pub fn DoctypeData(name: ~str, public_id: Option<~str>,
                system_id: Option<~str>, force_quirks: bool) -> DoctypeData {
     DoctypeData {
         name : move name,
@@ -110,7 +112,7 @@ fn DoctypeData(name: ~str, public_id: Option<~str>,
 
 
 
-fn define_bindings(compartment: &bare_compartment, doc: @Document,
+pub fn define_bindings(compartment: &bare_compartment, doc: @Document,
                    win: @Window) {
     bindings::window::init(compartment, win);
     bindings::document::init(compartment, doc);
@@ -129,11 +131,11 @@ enum LayoutData = {
     mut flow:  Option<@FlowContext>
 };
 
-type Node = cow::Handle<NodeData, LayoutData>;
+pub type Node = cow::Handle<NodeData, LayoutData>;
 
-type NodeScope = cow::Scope<NodeData, LayoutData>;
+pub type NodeScope = cow::Scope<NodeData, LayoutData>;
 
-fn NodeScope() -> NodeScope {
+pub fn NodeScope() -> NodeScope {
     cow::Scope()
 }
 
@@ -148,8 +150,7 @@ impl NodeScope : NodeScopeExtensions {
     }
 }
 
-#[allow(non_implicitly_copyable_typarams)]
-impl NodeScope : tree::ReadMethods<Node> {
+impl NodeScope {
     fn each_child(node: &Node, f: fn(&Node) -> bool) {
         tree::each_child(&self, node, f)
     }
@@ -157,18 +158,23 @@ impl NodeScope : tree::ReadMethods<Node> {
     fn get_parent(node: &Node) -> Option<Node> {
         tree::get_parent(&self, node)
     }
+}
 
+#[allow(non_implicitly_copyable_typarams)]
+impl NodeScope : tree::ReadMethods<Node> {
     fn with_tree_fields<R>(node: &Node, f: fn(&tree::Tree<Node>) -> R) -> R {
         self.read(node, |n| f(&n.tree))
     }
 }
 
-#[allow(non_implicitly_copyable_typarams)]
-impl NodeScope : tree::WriteMethods<Node> {
+impl NodeScope {
     fn add_child(node: Node, child: Node) {
         tree::add_child(&self, node, child)
     }
+}
 
+#[allow(non_implicitly_copyable_typarams)]
+impl NodeScope : tree::WriteMethods<Node> {
     pure fn eq(a: &Node, b: &Node) -> bool { a == b }
 
     fn with_tree_fields<R>(node: &Node, f: fn(&tree::Tree<Node>) -> R) -> R {
diff --git a/src/servo/dom/window.rs b/src/servo/dom/window.rs
index 7056ff94a8a..d6602374576 100644
--- a/src/servo/dom/window.rs
+++ b/src/servo/dom/window.rs
@@ -3,13 +3,13 @@ use content::content_task::{ControlMsg, Timer, ExitMsg};
 use js::jsapi::JSVal;
 use dvec::DVec;
 
-enum TimerControlMsg {
+pub enum TimerControlMsg {
     TimerMessage_Fire(~TimerData),
     TimerMessage_Close,
     TimerMessage_TriggerExit //XXXjdm this is just a quick hack to talk to the content task
 }
 
-struct Window {
+pub struct Window {
     timer_chan: Chan<TimerControlMsg>,
 
     drop {
@@ -63,7 +63,7 @@ impl Window {
     }
 }
 
-fn Window(content_chan: pipes::SharedChan<ControlMsg>) -> Window {
+pub fn Window(content_chan: pipes::SharedChan<ControlMsg>) -> Window {
         
     Window {
         timer_chan: do task::spawn_listener |timer_port: Port<TimerControlMsg>,
diff --git a/src/servo/engine.rs b/src/servo/engine.rs
index df9670ac00f..6f6299f14e1 100644
--- a/src/servo/engine.rs
+++ b/src/servo/engine.rs
@@ -23,7 +23,7 @@ pub enum Msg {
     ExitMsg(Chan<()>)
 }
 
-struct Engine<C:Compositor Send Copy> {
+pub struct Engine<C:Compositor Send Copy> {
     request_port: comm::Port<Msg>,
     compositor: C,
     render_task: RenderTask,
@@ -33,7 +33,7 @@ struct Engine<C:Compositor Send Copy> {
     content_task: ContentTask
 }
 
-fn Engine<C:Compositor Send Copy>(compositor: C,
+pub fn Engine<C:Compositor Send Copy>(compositor: C,
                                   opts: &Opts,
                                   dom_event_port: pipes::Port<Event>,
                                   dom_event_chan: pipes::SharedChan<Event>,
diff --git a/src/servo/html/cssparse.rs b/src/servo/html/cssparse.rs
index 5856fc5ea83..be3c0293684 100644
--- a/src/servo/html/cssparse.rs
+++ b/src/servo/html/cssparse.rs
@@ -12,7 +12,7 @@ use std::net::url::Url;
 use std::net::url;
 
 /// Where a style sheet comes from.
-enum StylesheetProvenance {
+pub enum StylesheetProvenance {
     UrlProvenance(Url),
     InlineProvenance(Url, ~str),
 }
diff --git a/src/servo/html/hubbub_html_parser.rs b/src/servo/html/hubbub_html_parser.rs
index d9f0084f3ca..5e22722fe12 100644
--- a/src/servo/html/hubbub_html_parser.rs
+++ b/src/servo/html/hubbub_html_parser.rs
@@ -10,6 +10,7 @@ use resource::resource_task::{Done, Load, Payload, ResourceTask};
 
 use core::comm::{Chan, Port};
 use cssparse::{InlineProvenance, StylesheetProvenance, UrlProvenance, spawn_css_parser};
+use hubbub::hubbub;
 use hubbub::Attribute;
 use newcss::stylesheet::Stylesheet;
 use std::net::url::Url;
@@ -97,7 +98,7 @@ fn js_script_listener(to_parent : comm::Chan<~[~[u8]]>, from_parent : comm::Port
                                 break;
                             }
                             Done(Err(*)) => {
-                                #error("error loading script %s", url.to_str());
+                                error!("error loading script %s", url.to_str());
                             }
                         }
                     }
diff --git a/src/servo/layout/block.rs b/src/servo/layout/block.rs
index e2d06c5c950..2201523b033 100644
--- a/src/servo/layout/block.rs
+++ b/src/servo/layout/block.rs
@@ -11,11 +11,11 @@ use layout::display_list_builder::DisplayListBuilder;
 use layout::flow::{FlowContext, FlowTree, InlineBlockFlow, BlockFlow, RootFlow};
 use util::tree;
 
-struct BlockFlowData {
+pub struct BlockFlowData {
     mut box: Option<@RenderBox>
 }
 
-fn BlockFlowData() -> BlockFlowData {
+pub fn BlockFlowData() -> BlockFlowData {
     BlockFlowData {
         box: None
     }
diff --git a/src/servo/layout/box.rs b/src/servo/layout/box.rs
index 6bb127bd1b3..67b4bc78edd 100644
--- a/src/servo/layout/box.rs
+++ b/src/servo/layout/box.rs
@@ -71,7 +71,7 @@ padding, backgrounds. It is analogous to a CSS nonreplaced content box.
 
    It also holds data specific to different box types, such as text.
 */
-struct RenderBoxData {
+pub struct RenderBoxData {
     /* originating DOM node */
     node : Node,
     /* reference to containing flow context, which this box
@@ -105,32 +105,7 @@ pub enum SplitBoxResult {
     SplitDidNotFit(Option<@RenderBox>, Option<@RenderBox>)
 }
 
-trait RenderBoxMethods {
-    pure fn d(&self) -> &self/RenderBoxData;
-
-    pure fn is_replaced() -> bool;
-    pure fn can_split() -> bool;
-    pure fn is_whitespace_only() -> bool;
-    // TODO(Issue #220): this should be a pure/const method
-    fn can_merge_with_box(@self, other: @RenderBox) -> bool;
-    pure fn content_box() -> Rect<Au>;
-    pure fn border_box() -> Rect<Au>;
-    pure fn margin_box() -> Rect<Au>;
-
-    fn split_to_width(@self, &LayoutContext, Au, starts_line: bool) -> SplitBoxResult;
-    fn get_min_width(&LayoutContext) -> Au;
-    fn get_pref_width(&LayoutContext) -> Au;
-    fn get_used_width() -> (Au, Au);
-    fn get_used_height() -> (Au, Au);
-
-    fn build_display_list(@self,
-                          builder: &DisplayListBuilder,
-                          dirty: &Rect<Au>,
-                          offset: &Point2D<Au>,
-                          dl: &mut DisplayList);
-}
-
-fn RenderBoxData(node: Node, ctx: @FlowContext, id: int) -> RenderBoxData {
+pub fn RenderBoxData(node: Node, ctx: @FlowContext, id: int) -> RenderBoxData {
     RenderBoxData {
         node : node,
         mut ctx  : ctx,
@@ -140,7 +115,7 @@ fn RenderBoxData(node: Node, ctx: @FlowContext, id: int) -> RenderBoxData {
     }
 }
 
-impl RenderBox : RenderBoxMethods {
+impl RenderBox  {
     pure fn d(&self) -> &self/RenderBoxData {
         match *self {
             GenericBox(ref d)  => d,
diff --git a/src/servo/layout/box_builder.rs b/src/servo/layout/box_builder.rs
index a4e6f4fc595..8aa8a52b358 100644
--- a/src/servo/layout/box_builder.rs
+++ b/src/servo/layout/box_builder.rs
@@ -22,7 +22,7 @@ pub struct LayoutTreeBuilder {
     mut next_cid: int
 }
 
-impl LayoutTreeBuilder {
+pub impl LayoutTreeBuilder {
     static pure fn new() -> LayoutTreeBuilder {
         LayoutTreeBuilder {
             root_flow: None,
diff --git a/src/servo/layout/context.rs b/src/servo/layout/context.rs
index c85284bc923..554a8c22a65 100644
--- a/src/servo/layout/context.rs
+++ b/src/servo/layout/context.rs
@@ -6,7 +6,7 @@ use std::net::url::Url;
 
 /* Represents layout task context. */
 
-struct LayoutContext {
+pub struct LayoutContext {
     font_ctx: @FontContext,
     image_cache: @LocalImageCache,
     doc_url: Url,
diff --git a/src/servo/layout/debug.rs b/src/servo/layout/debug.rs
index 5833abb76e0..9e0b86afc2e 100644
--- a/src/servo/layout/debug.rs
+++ b/src/servo/layout/debug.rs
@@ -1,10 +1,10 @@
-trait BoxedDebugMethods {
+pub trait BoxedDebugMethods {
     pure fn dump(@self);
     pure fn dump_indent(@self, ident: uint);
     pure fn debug_str(@self) -> ~str;
 }
 
-trait DebugMethods {
+pub trait DebugMethods {
     pure fn dump(&self);
     pure fn dump_indent(&self, ident: uint);
     pure fn debug_str(&self) -> ~str;
diff --git a/src/servo/layout/flow.rs b/src/servo/layout/flow.rs
index ad3a894d746..ec5d4bf3362 100644
--- a/src/servo/layout/flow.rs
+++ b/src/servo/layout/flow.rs
@@ -43,7 +43,7 @@ Currently, the important types of flows are:
 
 /* The type of the formatting context, and data specific to each
 context, such as linebox structures or float lists */ 
-enum FlowContext {
+pub enum FlowContext {
     AbsoluteFlow(FlowData), 
     BlockFlow(FlowData, BlockFlowData),
     FloatFlow(FlowData),
@@ -63,20 +63,6 @@ enum FlowContextType {
     Flow_Table
 }
 
-trait FlowContextMethods {
-    pure fn d(&self) -> &self/FlowData;
-    pure fn inline(&self) -> &self/InlineFlowData;
-    pure fn block(&self) -> &self/BlockFlowData;
-    pure fn root(&self) -> &self/RootFlowData;
-    fn bubble_widths(@self, &LayoutContext);
-    fn assign_widths(@self, &LayoutContext);
-    fn assign_height(@self, &LayoutContext);
-    fn build_display_list_recurse(@self, &DisplayListBuilder, dirty: &Rect<Au>,
-                                  offset: &Point2D<Au>, &mut DisplayList);
-    pure fn foldl_boxes_for_node<B: Copy>(Node, +seed: B, cb: pure fn&(+a: B,@RenderBox) -> B) -> B;
-    pure fn iter_boxes_for_node<T>(Node, cb: pure fn&(@RenderBox) -> T);
-}
-
 /* A particular kind of layout context. It manages the positioning of
    render boxes within the context.  */
 struct FlowData {
@@ -106,7 +92,7 @@ fn FlowData(id: int) -> FlowData {
     }
 }
 
-impl FlowContext : FlowContextMethods {
+impl FlowContext  {
     pure fn d(&self) -> &self/FlowData {
         match *self {
             AbsoluteFlow(ref d)    => d,
@@ -216,22 +202,27 @@ impl FlowContext : FlowContextMethods {
 }
 
 /* The tree holding FlowContexts */
-enum FlowTree { FlowTree }
+pub enum FlowTree { FlowTree }
 
-impl FlowTree : tree::ReadMethods<@FlowContext> {
+impl FlowTree {
     fn each_child(ctx: @FlowContext, f: fn(box: @FlowContext) -> bool) {
         tree::each_child(&self, &ctx, |box| f(*box) )
     }
+}
 
+impl FlowTree : tree::ReadMethods<@FlowContext> {
     fn with_tree_fields<R>(box: &@FlowContext, f: fn(&tree::Tree<@FlowContext>) -> R) -> R {
         f(&box.d().tree)
     }
 }
 
-impl FlowTree : tree::WriteMethods<@FlowContext> {
+impl FlowTree {
     fn add_child(parent: @FlowContext, child: @FlowContext) {
         tree::add_child(&self, parent, child)
     }
+}
+
+impl FlowTree : tree::WriteMethods<@FlowContext> {
 
     pure fn eq(a: &@FlowContext, b: &@FlowContext) -> bool { core::box::ptr_eq(*a, *b) }
 
diff --git a/src/servo/layout/inline.rs b/src/servo/layout/inline.rs
index f1885e8b6ac..2846f01d05d 100644
--- a/src/servo/layout/inline.rs
+++ b/src/servo/layout/inline.rs
@@ -39,12 +39,12 @@ serve as the starting point, but the current design doesn't make it
 hard to try out that alternative.
 */
 
-struct NodeRange {
+pub struct NodeRange {
     node: Node,
     range: Range,
 }
 
-impl NodeRange {
+pub impl NodeRange {
     static pure fn new(node: Node, range: &const Range) -> NodeRange {
         NodeRange { node: node, range: copy *range }
     }
@@ -557,7 +557,7 @@ impl LineboxScanner {
     }
 }
 
-struct InlineFlowData {
+pub struct InlineFlowData {
     // A vec of all inline render boxes. Several boxes may
     // correspond to one Node/Element.
     boxes: DVec<@RenderBox>,
@@ -570,7 +570,7 @@ struct InlineFlowData {
     elems: ElementMapping
 }
 
-fn InlineFlowData() -> InlineFlowData {
+pub fn InlineFlowData() -> InlineFlowData {
     InlineFlowData {
         boxes: DVec(),
         lines: DVec(),
diff --git a/src/servo/layout/layout_task.rs b/src/servo/layout/layout_task.rs
index 94894a243e3..664c20a481f 100644
--- a/src/servo/layout/layout_task.rs
+++ b/src/servo/layout/layout_task.rs
@@ -75,7 +75,7 @@ impl Damage {
     }
 }
 
-struct BuildData {
+pub struct BuildData {
     node: Node,
     url: Url,
     dom_event_chan: pipes::SharedChan<Event>,
@@ -84,7 +84,7 @@ struct BuildData {
     damage: Damage,
 }
 
-fn LayoutTask(render_task: RenderTask,
+pub fn LayoutTask(render_task: RenderTask,
               img_cache_task: ImageCacheTask,
               opts: Opts) -> LayoutTask {
     do spawn_listener::<Msg> |from_content, move img_cache_task, move opts| {
diff --git a/src/servo/layout/root.rs b/src/servo/layout/root.rs
index 9532bca5bed..d9c8ce9580d 100644
--- a/src/servo/layout/root.rs
+++ b/src/servo/layout/root.rs
@@ -10,11 +10,11 @@ use layout::flow::{FlowContext, FlowTree, InlineBlockFlow, BlockFlow, RootFlow};
 use layout::display_list_builder::DisplayListBuilder;
 use util::tree;
 
-struct RootFlowData {
+pub struct RootFlowData {
     mut box: Option<@RenderBox>
 }
 
-fn RootFlowData() -> RootFlowData {
+pub fn RootFlowData() -> RootFlowData {
     RootFlowData {
         box: None
     }
diff --git a/src/servo/platform/osmain.rs b/src/servo/platform/osmain.rs
index 31dd22f3779..16d9dc5b5ba 100644
--- a/src/servo/platform/osmain.rs
+++ b/src/servo/platform/osmain.rs
@@ -14,9 +14,10 @@ use geom::size::Size2D;
 use gfx::compositor::{Compositor, LayerBuffer, LayerBufferSet};
 use gfx::opts::Opts;
 use gfx::util::time;
-use layers::ImageLayer;
+use layers::layers::ImageLayer;
 use std::cell::Cell;
 use std::cmp::FuzzyEq;
+use glut::glut;
 
 pub struct OSMain {
     chan: comm::Chan<Msg>
@@ -40,12 +41,12 @@ pub enum Msg {
     Exit
 }
 
-fn OSMain(dom_event_chan: pipes::SharedChan<Event>, opts: Opts) -> OSMain {
+pub fn OSMain(dom_event_chan: pipes::SharedChan<Event>, opts: Opts) -> OSMain {
     let dom_event_chan = Cell(move dom_event_chan);
     OSMain {
         chan: do on_osmain::<Msg> |po, move dom_event_chan, move opts| {
             do platform::runmain {
-                #debug("preparing to enter main loop");
+                debug!("preparing to enter main loop");
 
                 // FIXME: Use the servo options.
                 let mode;
@@ -139,7 +140,7 @@ fn mainloop(mode: Mode,
                 AddKeyHandler(move key_ch) => key_handlers.push(move key_ch),
                 BeginDrawing(move sender) => lend_surface(surfaces, move sender),
                 Draw(move sender, move draw_target) => {
-                    #debug("osmain: received new frame");
+                    debug!("osmain: received new frame");
                     return_surface(surfaces, move draw_target);
                     lend_surface(surfaces, move sender);
 
@@ -226,7 +227,7 @@ fn mainloop(mode: Mode,
     match window {
         GlutWindow(window) => {
             do glut::reshape_func(window) |width, height| {
-                #debug("osmain: window resized to %d,%d", width as int, height as int);
+                debug!("osmain: window resized to %d,%d", width as int, height as int);
                 check_for_messages();
                 resize_rate_limiter.window_resized(width as uint, height as uint);
                 //composite();
@@ -286,7 +287,7 @@ fn lend_surface(surfaces: &SurfaceSet, receiver: pipes::Chan<LayerBufferSet>) {
             rect: copy layer_buffer.rect,
             stride: layer_buffer.stride
         };
-        #debug("osmain: lending surface %?", layer_buffer);
+        debug!("osmain: lending surface %?", layer_buffer);
         move layer_buffer
     };
     surfaces.front.layer_buffer_set.buffers = move old_layer_buffers;
diff --git a/src/servo/servo.rc b/src/servo/servo.rc
index 2add8bd301d..d58a485651a 100755
--- a/src/servo/servo.rc
+++ b/src/servo/servo.rc
@@ -23,67 +23,215 @@ extern mod stb_image;
 extern mod std;
 
 pub mod content {
+    #[path = "content/content_task.rs"]
     pub mod content_task;
 }
 
 pub mod css {
+    #[path = "css/select_handler.rs"]
     priv mod select_handler;
+    #[path = "css/node_util.rs"]
     priv mod node_util;
+    #[path = "css/node_void_ptr.rs"]
     priv mod node_void_ptr;
 
+    #[path = "css/select.rs"]
     pub mod select;
+    #[path = "css/matching.rs"]
     pub mod matching;
+    #[path = "css/node_style.rs"]
     pub mod node_style;
 }
 
 pub mod dom {
     pub mod bindings {
+        #[path = "dom/bindings/document.rs"]
         pub mod document;
+        #[path = "dom/bindings/element.rs"]
         pub mod element;
+        #[path = "dom/bindings/node.rs"]
         pub mod node;
+        #[path = "dom/bindings/utils.rs"]
         pub mod utils;
+        #[path = "dom/bindings/window.rs"]
         pub mod window;
     }
+    #[path = "dom/cow.rs"]
     pub mod cow;
+    #[path = "dom/document.rs"]
     pub mod document;
+    #[path = "dom/element.rs"]
     pub mod element;
+    #[path = "dom/event.rs"]
     pub mod event;
+    #[path = "dom/node.rs"]
     pub mod node;
+    #[path = "dom/window.rs"]
     pub mod window;
 }
 
 pub mod engine;
 
 pub mod layout {
+    #[path = "layout/block.rs"]
     pub mod block;
+    #[path = "layout/box.rs"]
     pub mod box;
+    #[path = "layout/box_builder.rs"]
     pub mod box_builder;
+    #[path = "layout/context.rs"]
     pub mod context;
+    #[path = "layout/debug.rs"]
     pub mod debug;
+    #[path = "layout/display_list_builder.rs"]
     pub mod display_list_builder;
+    #[path = "layout/flow.rs"]
     pub mod flow;
+    #[path = "layout/layout_task.rs"]
     pub mod layout_task;
+    #[path = "layout/inline.rs"]
     pub mod inline;
+    #[path = "layout/root.rs"]
     pub mod root;
+    #[path = "layout/text.rs"]
     pub mod text;
+    #[path = "layout/traverse.rs"]
     pub mod traverse;
+    #[path = "layout/aux.rs"]
     mod aux;
 }
 
 pub mod html {
+    #[path = "html/cssparse.rs"]
     pub mod cssparse;
+    #[path = "html/hubbub_html_parser.rs"]
     pub mod hubbub_html_parser;
 }
 
 pub mod platform {
+    #[path = "platform/base.rs"]
     pub mod base;
+    #[path = "platform/osmain.rs"]
     pub mod osmain;
+    #[path = "platform/resize_rate_limiter.rs"]
     priv mod resize_rate_limiter;
 }
 
-pub mod util {
-    pub mod actor;
-    pub mod tree;
-}
+#[path = "util/mod.rs"]
+pub mod util;
 
 use servo_util = util;
+
+#[cfg(target_os="macos")]
+extern mod core_graphics;
+#[cfg(target_os="macos")]
+extern mod core_text;
+
+use engine::{Engine, ExitMsg, LoadURLMsg};  // FIXME: "ExitMsg" is pollution.
+use platform::osmain::{AddKeyHandler, OSMain};
+
+use core::comm::*;  // FIXME: Bad!
+use core::option::swap_unwrap;
+use core::pipes::{Port, Chan};
+
+pub use gfx::opts::{Opts, Png, Screen};  // FIXME: Do we really want "Screen" and "Png" visible?
+pub use gfx::resource;
+pub use gfx::resource::image_cache_task::ImageCacheTask;
+pub use gfx::resource::resource_task::ResourceTask;
+pub use gfx::text;
+pub use gfx::util::url::make_url;
+
+fn main() {
+    let args = os::args();
+    run(&gfx::opts::from_cmdline_args(args))
+}
+
+#[allow(non_implicitly_copyable_typarams)]
+fn run(opts: &Opts) {
+    match opts.render_mode {
+      Screen => run_pipeline_screen(opts),
+      Png(outfile) => {
+        assert opts.urls.is_not_empty();
+        if opts.urls.len() > 1u {
+            fail ~"servo asks that you stick to a single URL in PNG output mode"
+        }
+        run_pipeline_png(opts, outfile)
+      }
+    }
+}
+
+fn run_pipeline_screen(opts: &Opts) {
+    let (dom_event_chan, dom_event_port) = pipes::stream();
+    let dom_event_chan = pipes::SharedChan(move dom_event_chan);
+
+    // The platform event handler thread
+    let osmain = OSMain(dom_event_chan.clone(), copy *opts);
+
+    // Send each file to render then wait for keypress
+    let (keypress_to_engine, keypress_from_osmain) = pipes::stream();
+    osmain.chan.send(AddKeyHandler(move keypress_to_engine));
+
+    // Create a servo instance
+    let resource_task = ResourceTask();
+    let image_cache_task = ImageCacheTask(copy resource_task);
+    let engine_task = Engine(osmain, opts, move dom_event_port, move dom_event_chan,
+                             move resource_task, move image_cache_task);
+
+    for opts.urls.each |filename| {
+        let url = make_url(copy *filename, None);
+        debug!("master: Sending url `%s`", url.to_str());
+        engine_task.send(LoadURLMsg(move url));
+        debug!("master: Waiting for keypress");
+
+        match keypress_from_osmain.try_recv() {
+          Some(*) => { }
+          None => { error!("keypress stream closed unexpectedly") }
+        };
+    }
+
+    // Shut everything down
+    debug!("master: Shut down");
+    let (exit_chan, exit_response_from_engine) = pipes::stream();
+    engine_task.send(engine::ExitMsg(move exit_chan));
+    exit_response_from_engine.recv();
+
+    osmain.chan.send(platform::osmain::Exit);
+}
+
+fn run_pipeline_png(_opts: &Opts, _outfile: &str) {
+    fail ~"PNG compositor is broken";
+}
+
+#[cfg(broken)]
+fn run_pipeline_png(url: ~str, outfile: &str) {
+    // Use a PNG encoder as the graphics compositor
+    use gfx::png_compositor;
+    use png_compositor::PngCompositor;
+    use io::{Writer, buffered_file_writer};
+    use resource::resource_task::ResourceTask;
+    use resource::image_cache_task::SyncImageCacheTask;
+
+    listen(|pngdata_from_compositor| {
+        let (dom_event_chan, dom_event_port) = pipes::stream();
+        let dom_event_chan = pipes::SharedChan(move dom_event_chan);
+
+        let compositor = PngCompositor(pngdata_from_compositor);
+        let resource_task = ResourceTask();
+        // For the PNG pipeline we are using a synchronous image task so that all images will be
+        // fulfilled before the first paint.
+        let image_cache_task = SyncImageCacheTask(resource_task);
+        let engine_task = Engine(copy compositor, move dom_event_port, move dom_event_chan,
+                                 move resource_task, move image_cache_task);
+        engine_task.send(LoadURLMsg(make_url(copy url, None)));
+
+        match buffered_file_writer(&Path(outfile)) {
+          Ok(writer) => writer.write(pngdata_from_compositor.recv()),
+          Err(e) => fail e
+        }
+
+        let (exit_chan, exit_response_from_engine) = pipes::stream();
+        engine_task.send(engine::ExitMsg(move exit_chan));
+        exit_response_from_engine.recv();
+        compositor.send(png_compositor::Exit);
+    })
+}
diff --git a/src/servo/servo.rs b/src/servo/servo.rs
deleted file mode 100644
index 7c23784072a..00000000000
--- a/src/servo/servo.rs
+++ /dev/null
@@ -1,113 +0,0 @@
-#[cfg(target_os="macos")]
-extern mod core_graphics;
-#[cfg(target_os="macos")]
-extern mod core_text;
-
-use engine::{Engine, ExitMsg, LoadURLMsg};  // FIXME: "ExitMsg" is pollution.
-use platform::osmain::{AddKeyHandler, OSMain};
-
-use core::comm::*;  // FIXME: Bad!
-use core::option::swap_unwrap;
-use core::pipes::{Port, Chan};
-
-pub use gfx::opts::{Opts, Png, Screen};  // FIXME: Do we really want "Screen" and "Png" visible?
-pub use gfx::resource;
-pub use gfx::resource::image_cache_task::ImageCacheTask;
-pub use gfx::resource::resource_task::ResourceTask;
-pub use gfx::text;
-pub use gfx::util::url::make_url;
-
-fn main() {
-    let args = os::args();
-    run(&gfx::opts::from_cmdline_args(args))
-}
-
-#[allow(non_implicitly_copyable_typarams)]
-fn run(opts: &Opts) {
-    match opts.render_mode {
-      Screen => run_pipeline_screen(opts),
-      Png(outfile) => {
-        assert opts.urls.is_not_empty();
-        if opts.urls.len() > 1u {
-            fail ~"servo asks that you stick to a single URL in PNG output mode"
-        }
-        run_pipeline_png(opts, outfile)
-      }
-    }
-}
-
-fn run_pipeline_screen(opts: &Opts) {
-    let (dom_event_chan, dom_event_port) = pipes::stream();
-    let dom_event_chan = pipes::SharedChan(move dom_event_chan);
-
-    // The platform event handler thread
-    let osmain = OSMain(dom_event_chan.clone(), copy *opts);
-
-    // Send each file to render then wait for keypress
-    let (keypress_to_engine, keypress_from_osmain) = pipes::stream();
-    osmain.chan.send(AddKeyHandler(move keypress_to_engine));
-
-    // Create a servo instance
-    let resource_task = ResourceTask();
-    let image_cache_task = ImageCacheTask(copy resource_task);
-    let engine_task = Engine(osmain, opts, move dom_event_port, move dom_event_chan,
-                             move resource_task, move image_cache_task);
-
-    for opts.urls.each |filename| {
-        let url = make_url(copy *filename, None);
-        #debug["master: Sending url `%s`", url.to_str()];
-        engine_task.send(LoadURLMsg(move url));
-        #debug["master: Waiting for keypress"];
-
-        match keypress_from_osmain.try_recv() {
-          Some(*) => { }
-          None => { #error("keypress stream closed unexpectedly") }
-        };
-    }
-
-    // Shut everything down
-    #debug["master: Shut down"];
-    let (exit_chan, exit_response_from_engine) = pipes::stream();
-    engine_task.send(engine::ExitMsg(move exit_chan));
-    exit_response_from_engine.recv();
-
-    osmain.chan.send(platform::osmain::Exit);
-}
-
-fn run_pipeline_png(_opts: &Opts, _outfile: &str) {
-    fail ~"PNG compositor is broken";
-}
-
-#[cfg(broken)]
-fn run_pipeline_png(url: ~str, outfile: &str) {
-    // Use a PNG encoder as the graphics compositor
-    use gfx::png_compositor;
-    use png_compositor::PngCompositor;
-    use io::{Writer, buffered_file_writer};
-    use resource::resource_task::ResourceTask;
-    use resource::image_cache_task::SyncImageCacheTask;
-
-    listen(|pngdata_from_compositor| {
-        let (dom_event_chan, dom_event_port) = pipes::stream();
-        let dom_event_chan = pipes::SharedChan(move dom_event_chan);
-
-        let compositor = PngCompositor(pngdata_from_compositor);
-        let resource_task = ResourceTask();
-        // For the PNG pipeline we are using a synchronous image task so that all images will be
-        // fulfilled before the first paint.
-        let image_cache_task = SyncImageCacheTask(resource_task);
-        let engine_task = Engine(copy compositor, move dom_event_port, move dom_event_chan,
-                                 move resource_task, move image_cache_task);
-        engine_task.send(LoadURLMsg(make_url(copy url, None)));
-
-        match buffered_file_writer(&Path(outfile)) {
-          Ok(writer) => writer.write(pngdata_from_compositor.recv()),
-          Err(e) => fail e
-        }
-
-        let (exit_chan, exit_response_from_engine) = pipes::stream();
-        engine_task.send(engine::ExitMsg(move exit_chan));
-        exit_response_from_engine.recv();
-        compositor.send(png_compositor::Exit);
-    })
-}
diff --git a/src/servo/util.rs b/src/servo/util/mod.rs
index 977812af1fe..730d5fc1c26 100644
--- a/src/servo/util.rs
+++ b/src/servo/util/mod.rs
@@ -1,3 +1,5 @@
 pub use gfx::util::cache;
 pub use gfx::util::time;
 
+pub mod actor;
+pub mod tree;