style: Avoid cloning all over the error reporter.

tests/unit/style/parsing/background.rs

@@ -15,7 +15,8 @@ use style::stylesheets::Origin;
 #[test]
 fn background_shorthand_should_parse_all_available_properties_when_specified() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("url(\"http://servo/test.png\") top center / 200px 200px repeat-x fixed padding-box \
         content-box red");
     let result = background::parse_value(&context, &mut parser).unwrap();
@@ -34,7 +35,8 @@ fn background_shorthand_should_parse_all_available_properties_when_specified() {
 #[test]
 fn background_shorthand_should_parse_when_some_fields_set() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("14px 40px repeat-y");
     let result = background::parse_value(&context, &mut parser).unwrap();
 
@@ -64,7 +66,8 @@ fn background_shorthand_should_parse_when_some_fields_set() {
 #[test]
 fn background_shorthand_should_parse_comma_separated_declarations() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("url(\"http://servo/test.png\") top left no-repeat, url(\"http://servo/test.png\") \
         center / 100% 100% no-repeat, white");
     let result = background::parse_value(&context, &mut parser).unwrap();
@@ -85,7 +88,8 @@ fn background_shorthand_should_parse_comma_separated_declarations() {
 #[test]
 fn background_shorthand_should_parse_position_and_size_correctly() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("7px 4px");
     let result = background::parse_value(&context, &mut parser).unwrap();
 
@@ -109,7 +113,8 @@ fn background_shorthand_should_parse_position_and_size_correctly() {
 #[test]
 fn background_shorthand_should_parse_origin_and_clip_correctly() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("padding-box content-box");
     let result = background::parse_value(&context, &mut parser).unwrap();
 

tests/unit/style/parsing/border.rs

@@ -15,7 +15,8 @@ use style_traits::ToCss;
 #[test]
 fn border_image_shorthand_should_parse_when_all_properties_specified() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("linear-gradient(red, blue) 30 30% 45 fill / 20px 40px / 10px \
                                  round stretch");
     let result = border_image::parse_value(&context, &mut parser).unwrap();
@@ -31,7 +32,8 @@ fn border_image_shorthand_should_parse_when_all_properties_specified() {
 #[test]
 fn border_image_shorthand_should_parse_without_width() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("linear-gradient(red, blue) 30 30% 45 fill / / 10px round stretch");
     let result = border_image::parse_value(&context, &mut parser).unwrap();
 
@@ -46,7 +48,8 @@ fn border_image_shorthand_should_parse_without_width() {
 #[test]
 fn border_image_shorthand_should_parse_without_outset() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("linear-gradient(red, blue) 30 30% 45 fill / 20px 40px round");
     let result = border_image::parse_value(&context, &mut parser).unwrap();
 
@@ -61,7 +64,8 @@ fn border_image_shorthand_should_parse_without_outset() {
 #[test]
 fn border_image_shorthand_should_parse_without_width_or_outset() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("linear-gradient(red, blue) 30 30% 45 fill round");
     let result = border_image::parse_value(&context, &mut parser).unwrap();
 
@@ -76,7 +80,8 @@ fn border_image_shorthand_should_parse_without_width_or_outset() {
 #[test]
 fn border_image_shorthand_should_parse_with_just_source() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("linear-gradient(red, blue)");
     let result = border_image::parse_value(&context, &mut parser).unwrap();
 
@@ -91,7 +96,8 @@ fn border_image_shorthand_should_parse_with_just_source() {
 #[test]
 fn border_image_outset_should_error_on_negative_length() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("-1em");
     let result = border_image_outset::parse(&context, &mut parser);
     assert_eq!(result, Err(()));
@@ -100,7 +106,8 @@ fn border_image_outset_should_error_on_negative_length() {
 #[test]
 fn border_image_outset_should_error_on_negative_number() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("-15");
     let result = border_image_outset::parse(&context, &mut parser);
     assert_eq!(result, Err(()));
@@ -109,7 +116,8 @@ fn border_image_outset_should_error_on_negative_number() {
 #[test]
 fn border_image_outset_should_return_number_on_plain_zero() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("0");
     let result = border_image_outset::parse(&context, &mut parser);
     assert_eq!(result.unwrap(), parse_longhand!(border_image_outset, "0"));
@@ -118,7 +126,8 @@ fn border_image_outset_should_return_number_on_plain_zero() {
 #[test]
 fn border_image_outset_should_return_length_on_length_zero() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("0em");
     let result = border_image_outset::parse(&context, &mut parser);
     assert_eq!(result.unwrap(), parse_longhand!(border_image_outset, "0em"));

tests/unit/style/parsing/column.rs

@@ -19,7 +19,8 @@ fn test_column_width() {
     assert_roundtrip_with_context!(column_width::parse, "0.3vw");
 
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
 
     let mut negative = Parser::new("-6px");
     assert!(column_width::parse(&context, &mut negative).is_err());
@@ -35,7 +36,8 @@ fn test_column_gap() {
     assert_roundtrip_with_context!(column_gap::parse, "0.3vw");
 
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
 
     let mut negative = Parser::new("-6px");
     assert!(column_gap::parse(&context, &mut negative).is_err());

tests/unit/style/parsing/effects.rs

@@ -38,7 +38,8 @@ fn test_clip() {
 #[test]
 fn test_longhands_parse_origin() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
 
     let mut parser = Parser::new("1px some-rubbish");
     let parsed = longhands::parse_origin(&context, &mut parser);

tests/unit/style/parsing/font.rs

@@ -53,7 +53,8 @@ fn font_feature_settings_should_parse_properly() {
 #[test]
 fn font_feature_settings_should_throw_on_bad_input() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
 
     let mut empty = Parser::new("");
     assert!(font_feature_settings::parse(&context, &mut empty).is_err());
@@ -103,7 +104,8 @@ fn font_weight_keyword_should_preserve_keyword() {
     use style::properties::longhands::font_weight::SpecifiedValue;
 
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("normal");
     let result = font_weight::parse(&context, &mut parser);
     assert_eq!(result.unwrap(), SpecifiedValue::Normal);

tests/unit/style/parsing/inherited_text.rs

@@ -111,7 +111,8 @@ fn webkit_text_stroke_shorthand_should_parse_properly() {
     use style::properties::shorthands::_webkit_text_stroke;
 
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
 
     let mut parser = Parser::new("thin red");
     let result = _webkit_text_stroke::parse_value(&context, &mut parser).unwrap();
@@ -132,7 +133,8 @@ fn line_height_should_return_number_on_plain_zero() {
     use style::properties::longhands::line_height;
 
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("0");
     let result = line_height::parse(&context, &mut parser);
     assert_eq!(result.unwrap(), parse_longhand!(line_height, "0"));
@@ -145,7 +147,8 @@ fn line_height_should_return_length_on_length_zero() {
     use style::properties::longhands::line_height;
 
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("0px");
     let result = line_height::parse(&context, &mut parser);
     assert_eq!(result.unwrap(), parse_longhand!(line_height, "0px"));

tests/unit/style/parsing/mask.rs

@@ -14,7 +14,8 @@ use style::stylesheets::Origin;
 #[test]
 fn mask_shorthand_should_parse_all_available_properties_when_specified() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("url(\"http://servo/test.png\") luminance 7px 4px / 70px 50px \
                                  repeat-x padding-box border-box subtract");
     let result = mask::parse_value(&context, &mut parser).unwrap();
@@ -33,7 +34,8 @@ fn mask_shorthand_should_parse_all_available_properties_when_specified() {
 #[test]
 fn mask_shorthand_should_parse_when_some_fields_set() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("14px 40px repeat-y");
     let result = mask::parse_value(&context, &mut parser).unwrap();
 
@@ -62,7 +64,8 @@ fn mask_shorthand_should_parse_when_some_fields_set() {
 #[test]
 fn mask_shorthand_should_parse_position_and_size_correctly() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("7px 4px");
     let result = mask::parse_value(&context, &mut parser).unwrap();
 
@@ -86,7 +89,8 @@ fn mask_shorthand_should_parse_position_and_size_correctly() {
 #[test]
 fn mask_shorthand_should_parse_origin_and_clip_correctly() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("padding-box content-box");
     let result = mask::parse_value(&context, &mut parser).unwrap();
 
@@ -109,7 +113,8 @@ fn mask_shorthand_should_parse_origin_and_clip_correctly() {
 #[test]
 fn mask_shorthand_should_parse_mode_everywhere() {
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new("luminance 7px 4px repeat-x padding-box");
     assert!(mask::parse_value(&context, &mut parser).is_ok());
 

tests/unit/style/parsing/mod.rs

@@ -11,7 +11,8 @@ use style::stylesheets::Origin;
 
 fn parse<T, F: Fn(&ParserContext, &mut Parser) -> Result<T, ()>>(f: F, s: &str) -> Result<T, ()> {
     let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
     let mut parser = Parser::new(s);
     f(&context, &mut parser)
 }
@@ -24,7 +25,8 @@ macro_rules! assert_roundtrip_with_context {
     };
     ($fun:expr,$input:expr, $output:expr) => {
         let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
-        let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+        let reporter = CSSErrorReporterTest;
+        let context = ParserContext::new(Origin::Author, &url, &reporter);
         let mut parser = Parser::new($input);
         let parsed = $fun(&context, &mut parser)
                      .expect(&format!("Failed to parse {}", $input));
@@ -61,7 +63,8 @@ macro_rules! assert_roundtrip {
 macro_rules! assert_parser_exhausted {
     ($name:ident, $string:expr, $should_exhausted:expr) => {{
         let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
-        let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+        let reporter = CSSErrorReporterTest;
+        let context = ParserContext::new(Origin::Author, &url, &reporter);
         let mut parser = Parser::new($string);
         let parsed = $name::parse(&context, &mut parser);
         assert_eq!(parsed.is_ok(), true);
@@ -72,7 +75,8 @@ macro_rules! assert_parser_exhausted {
 macro_rules! parse_longhand {
     ($name:ident, $s:expr) => {{
         let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
-        let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+        let reporter = CSSErrorReporterTest;
+        let context = ParserContext::new(Origin::Author, &url, &reporter);
         $name::parse(&context, &mut Parser::new($s)).unwrap()
     }};
 }

tests/unit/style/parsing/outline.rs

@@ -28,7 +28,8 @@ fn test_outline_style() {
         // except that 'hidden' is not a legal outline style.
 
         let url = ::servo_url::ServoUrl::parse("http://localhost").unwrap();
-        let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+        let reporter = CSSErrorReporterTest;
+        let context = ParserContext::new(Origin::Author, &url, &reporter);
         let mut parser = Parser::new(r#"hidden"#);
         let parsed = outline_style::parse(&context, &mut parser);
         assert!(parsed.is_err());

tests/unit/style/parsing/ui.rs

@@ -27,7 +27,8 @@ fn test_moz_user_select() {
     assert_roundtrip_with_context!(_moz_user_select::parse, "-moz-text");
 
     let url = ServoUrl::parse("http://localhost").unwrap();
-    let context = ParserContext::new(Origin::Author, &url, Box::new(CSSErrorReporterTest));
+    let reporter = CSSErrorReporterTest;
+    let context = ParserContext::new(Origin::Author, &url, &reporter);
 
     let mut negative = Parser::new("potato");
     assert!(_moz_user_select::parse(&context, &mut negative).is_err());