servo: Merge #18003 - Move percentage to mod.rs (from DarkDrek:move_percentage); r=canaltinova

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The tests in the issue worked for me locally.

---
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- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [X] These changes fix #18001 (github issue number if applicable).

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- [X] These changes do not require tests because they are just refactoring

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Source-Repo: https://github.com/servo/servo
Source-Revision: 955b62506042a330b7602a48d1d8899b0b6ae4af

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : 770982d859cef03d90bf397293474bb8c2241c09

servo/components/style/properties/gecko.mako.rs

@@ -62,9 +62,8 @@ use std::mem::{forget, uninitialized, transmute, zeroed};
 use std::{cmp, ops, ptr};
 use stylesheets::{MallocSizeOfWithRepeats, SizeOfState};
 use values::{self, Auto, CustomIdent, Either, KeyframesName};
-use values::computed::{NonNegativeAu, ToComputedValue};
+use values::computed::{NonNegativeAu, ToComputedValue, Percentage};
 use values::computed::effects::{BoxShadow, Filter, SimpleShadow};
-use values::computed::length::Percentage;
 use computed_values::border_style;
 
 pub mod style_structs {

servo/components/style/values/computed/length.rs

@@ -9,7 +9,7 @@ use ordered_float::NotNaN;
 use std::fmt;
 use style_traits::ToCss;
 use style_traits::values::specified::AllowedLengthType;
-use super::{Number, ToComputedValue, Context};
+use super::{Number, ToComputedValue, Context, Percentage};
 use values::{Auto, CSSFloat, Either, ExtremumLength, None_, Normal, specified};
 use values::computed::{NonNegativeAu, NonNegativeNumber};
 use values::generics::NonNegative;
@@ -19,47 +19,6 @@ use values::specified::length::ViewportPercentageLength;
 pub use super::image::Image;
 pub use values::specified::{Angle, BorderStyle, Time, UrlOrNone};
 
-/// A computed `<percentage>` value.
-///
-/// FIXME(emilio): why is this in length.rs?
-#[derive(Clone, Copy, Debug, Default, PartialEq, HasViewportPercentage)]
-#[cfg_attr(feature = "servo", derive(Deserialize, HeapSizeOf, Serialize))]
-pub struct Percentage(pub CSSFloat);
-
-impl Percentage {
-    /// 0%
-    #[inline]
-    pub fn zero() -> Self {
-        Percentage(0.)
-    }
-
-    /// 100%
-    #[inline]
-    pub fn hundred() -> Self {
-        Percentage(1.)
-    }
-}
-
-impl ToCss for Percentage {
-    fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
-        write!(dest, "{}%", self.0 * 100.)
-    }
-}
-
-impl ToComputedValue for specified::Percentage {
-    type ComputedValue = Percentage;
-
-    #[inline]
-    fn to_computed_value(&self, _: &Context) -> Percentage {
-        Percentage(self.get())
-    }
-
-    #[inline]
-    fn from_computed_value(computed: &Percentage) -> Self {
-        specified::Percentage::new(computed.0)
-    }
-}
-
 impl ToComputedValue for specified::NoCalcLength {
     type ComputedValue = Au;
 

servo/components/style/values/computed/mod.rs

@@ -43,7 +43,7 @@ pub use super::specified::{BorderStyle, UrlOrNone};
 pub use super::generics::grid::GridLine;
 pub use super::specified::url::SpecifiedUrl;
 pub use self::length::{CalcLengthOrPercentage, Length, LengthOrNone, LengthOrNumber, LengthOrPercentage};
-pub use self::length::{LengthOrPercentageOrAuto, LengthOrPercentageOrNone, MaxLength, MozLength, Percentage};
+pub use self::length::{LengthOrPercentageOrAuto, LengthOrPercentageOrNone, MaxLength, MozLength};
 pub use self::length::NonNegativeLengthOrPercentage;
 pub use self::position::Position;
 pub use self::svg::{SVGLength, SVGOpacity, SVGPaint, SVGPaintKind, SVGStrokeDashArray, SVGWidth};
@@ -645,3 +645,42 @@ impl From<Au> for NonNegativeAu {
         NonNegative::<Au>(au)
     }
 }
+
+/// A computed `<percentage>` value.
+#[derive(Clone, Copy, Debug, Default, PartialEq, HasViewportPercentage)]
+#[cfg_attr(feature = "servo", derive(Deserialize, HeapSizeOf, Serialize))]
+pub struct Percentage(pub CSSFloat);
+
+impl Percentage {
+    /// 0%
+    #[inline]
+    pub fn zero() -> Self {
+        Percentage(0.)
+    }
+
+    /// 100%
+    #[inline]
+    pub fn hundred() -> Self {
+        Percentage(1.)
+    }
+}
+
+impl ToCss for Percentage {
+    fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
+        write!(dest, "{}%", self.0 * 100.)
+    }
+}
+
+impl ToComputedValue for specified::Percentage {
+    type ComputedValue = Percentage;
+
+    #[inline]
+    fn to_computed_value(&self, _: &Context) -> Percentage {
+        Percentage(self.get())
+    }
+
+    #[inline]
+    fn from_computed_value(computed: &Percentage) -> Self {
+        specified::Percentage::new(computed.0)
+    }
+}

servo/components/style/values/specified/length.rs

@@ -15,9 +15,9 @@ use std::{cmp, fmt, mem};
 use std::ascii::AsciiExt;
 use std::ops::Mul;
 use style_traits::{HasViewportPercentage, ToCss, ParseError, StyleParseError};
-use style_traits::values::specified::{AllowedLengthType, AllowedNumericType};
+use style_traits::values::specified::AllowedLengthType;
 use stylesheets::CssRuleType;
-use super::{AllowQuirks, Number, ToComputedValue};
+use super::{AllowQuirks, Number, ToComputedValue, Percentage};
 use values::{Auto, CSSFloat, Either, FONT_MEDIUM_PX, None_, Normal};
 use values::ExtremumLength;
 use values::computed::{self, Context};
@@ -756,124 +756,6 @@ pub type NonNegativeLengthOrAuto = Either<NonNegativeLength, Auto>;
 /// Either a NonNegativeLength or a NonNegativeNumber value.
 pub type NonNegativeLengthOrNumber = Either<NonNegativeLength, NonNegativeNumber>;
 
-/// A percentage value.
-#[derive(Clone, Copy, Debug, Default, PartialEq)]
-#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
-pub struct Percentage {
-    /// The percentage value as a float.
-    ///
-    /// [0 .. 100%] maps to [0.0 .. 1.0]
-    value: CSSFloat,
-    /// If this percentage came from a calc() expression, this tells how
-    /// clamping should be done on the value.
-    calc_clamping_mode: Option<AllowedNumericType>,
-}
-
-no_viewport_percentage!(Percentage);
-
-impl ToCss for Percentage {
-    fn to_css<W>(&self, dest: &mut W) -> fmt::Result
-        where W: fmt::Write,
-    {
-        if self.calc_clamping_mode.is_some() {
-            dest.write_str("calc(")?;
-        }
-
-        write!(dest, "{}%", self.value * 100.)?;
-
-        if self.calc_clamping_mode.is_some() {
-            dest.write_str(")")?;
-        }
-        Ok(())
-    }
-}
-
-impl Percentage {
-    /// Create a percentage from a numeric value.
-    pub fn new(value: CSSFloat) -> Self {
-        Self {
-            value,
-            calc_clamping_mode: None,
-        }
-    }
-
-    /// Get the underlying value for this float.
-    pub fn get(&self) -> CSSFloat {
-        self.calc_clamping_mode.map_or(self.value, |mode| mode.clamp(self.value))
-    }
-
-    /// Reverse this percentage, preserving calc-ness.
-    ///
-    /// For example: If it was 20%, convert it into 80%.
-    pub fn reverse(&mut self) {
-        let new_value = 1. - self.value;
-        self.value = new_value;
-    }
-
-
-    /// Parse a specific kind of percentage.
-    pub fn parse_with_clamping_mode<'i, 't>(
-        context: &ParserContext,
-        input: &mut Parser<'i, 't>,
-        num_context: AllowedNumericType,
-    ) -> Result<Self, ParseError<'i>> {
-        // FIXME: remove early returns when lifetimes are non-lexical
-        match *input.next()? {
-            Token::Percentage { unit_value, .. } if num_context.is_ok(context.parsing_mode, unit_value) => {
-                return Ok(Percentage::new(unit_value))
-            }
-            Token::Function(ref name) if name.eq_ignore_ascii_case("calc") => {}
-            ref t => return Err(BasicParseError::UnexpectedToken(t.clone()).into())
-        }
-
-        let result = input.parse_nested_block(|i| {
-            CalcNode::parse_percentage(context, i)
-        })?;
-
-        // TODO(emilio): -moz-image-rect is the only thing that uses
-        // the clamping mode... I guess we could disallow it...
-        Ok(Percentage {
-            value: result,
-            calc_clamping_mode: Some(num_context),
-        })
-    }
-
-    /// Parses a percentage token, but rejects it if it's negative.
-    pub fn parse_non_negative<'i, 't>(context: &ParserContext,
-                                      input: &mut Parser<'i, 't>)
-                                      -> Result<Self, ParseError<'i>> {
-        Self::parse_with_clamping_mode(context, input, AllowedNumericType::NonNegative)
-    }
-
-    /// 0%
-    #[inline]
-    pub fn zero() -> Self {
-        Percentage {
-            value: 0.,
-            calc_clamping_mode: None,
-        }
-    }
-
-    /// 100%
-    #[inline]
-    pub fn hundred() -> Self {
-        Percentage {
-            value: 1.,
-            calc_clamping_mode: None,
-        }
-    }
-}
-
-impl Parse for Percentage {
-    #[inline]
-    fn parse<'i, 't>(
-        context: &ParserContext,
-        input: &mut Parser<'i, 't>
-    ) -> Result<Self, ParseError<'i>> {
-        Self::parse_with_clamping_mode(context, input, AllowedNumericType::All)
-    }
-}
-
 /// A length or a percentage value.
 #[allow(missing_docs)]
 #[cfg_attr(feature = "servo", derive(HeapSizeOf))]

servo/components/style/values/specified/mod.rs

@@ -41,7 +41,7 @@ pub use self::length::{AbsoluteLength, CalcLengthOrPercentage, CharacterWidth};
 pub use self::length::{FontRelativeLength, Length, LengthOrNone, LengthOrNumber};
 pub use self::length::{LengthOrPercentage, LengthOrPercentageOrAuto};
 pub use self::length::{LengthOrPercentageOrNone, MaxLength, MozLength};
-pub use self::length::{NoCalcLength, Percentage, ViewportPercentageLength};
+pub use self::length::{NoCalcLength, ViewportPercentageLength};
 pub use self::length::NonNegativeLengthOrPercentage;
 pub use self::rect::LengthOrNumberRect;
 pub use self::position::{Position, PositionComponent};
@@ -1046,3 +1046,121 @@ impl ToCss for Attr {
 }
 
 impl ComputedValueAsSpecified for Attr {}
+
+/// A percentage value.
+#[derive(Clone, Copy, Debug, Default, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
+pub struct Percentage {
+    /// The percentage value as a float.
+    ///
+    /// [0 .. 100%] maps to [0.0 .. 1.0]
+    value: CSSFloat,
+    /// If this percentage came from a calc() expression, this tells how
+    /// clamping should be done on the value.
+    calc_clamping_mode: Option<AllowedNumericType>,
+}
+
+no_viewport_percentage!(Percentage);
+
+impl ToCss for Percentage {
+    fn to_css<W>(&self, dest: &mut W) -> fmt::Result
+        where W: fmt::Write,
+    {
+        if self.calc_clamping_mode.is_some() {
+            dest.write_str("calc(")?;
+        }
+
+        write!(dest, "{}%", self.value * 100.)?;
+
+        if self.calc_clamping_mode.is_some() {
+            dest.write_str(")")?;
+        }
+        Ok(())
+    }
+}
+
+impl Percentage {
+    /// Create a percentage from a numeric value.
+    pub fn new(value: CSSFloat) -> Self {
+        Self {
+            value,
+            calc_clamping_mode: None,
+        }
+    }
+
+    /// Get the underlying value for this float.
+    pub fn get(&self) -> CSSFloat {
+        self.calc_clamping_mode.map_or(self.value, |mode| mode.clamp(self.value))
+    }
+
+    /// Reverse this percentage, preserving calc-ness.
+    ///
+    /// For example: If it was 20%, convert it into 80%.
+    pub fn reverse(&mut self) {
+        let new_value = 1. - self.value;
+        self.value = new_value;
+    }
+
+
+    /// Parse a specific kind of percentage.
+    pub fn parse_with_clamping_mode<'i, 't>(
+        context: &ParserContext,
+        input: &mut Parser<'i, 't>,
+        num_context: AllowedNumericType,
+    ) -> Result<Self, ParseError<'i>> {
+        // FIXME: remove early returns when lifetimes are non-lexical
+        match *input.next()? {
+            Token::Percentage { unit_value, .. } if num_context.is_ok(context.parsing_mode, unit_value) => {
+                return Ok(Percentage::new(unit_value))
+            }
+            Token::Function(ref name) if name.eq_ignore_ascii_case("calc") => {}
+            ref t => return Err(BasicParseError::UnexpectedToken(t.clone()).into())
+        }
+
+        let result = input.parse_nested_block(|i| {
+            CalcNode::parse_percentage(context, i)
+        })?;
+
+        // TODO(emilio): -moz-image-rect is the only thing that uses
+        // the clamping mode... I guess we could disallow it...
+        Ok(Percentage {
+            value: result,
+            calc_clamping_mode: Some(num_context),
+        })
+    }
+
+    /// Parses a percentage token, but rejects it if it's negative.
+    pub fn parse_non_negative<'i, 't>(context: &ParserContext,
+                                      input: &mut Parser<'i, 't>)
+                                      -> Result<Self, ParseError<'i>> {
+        Self::parse_with_clamping_mode(context, input, AllowedNumericType::NonNegative)
+    }
+
+    /// 0%
+    #[inline]
+    pub fn zero() -> Self {
+        Percentage {
+            value: 0.,
+            calc_clamping_mode: None,
+        }
+    }
+
+    /// 100%
+    #[inline]
+    pub fn hundred() -> Self {
+        Percentage {
+            value: 1.,
+            calc_clamping_mode: None,
+        }
+    }
+}
+
+impl Parse for Percentage {
+    #[inline]
+    fn parse<'i, 't>(
+        context: &ParserContext,
+        input: &mut Parser<'i, 't>
+    ) -> Result<Self, ParseError<'i>> {
+        Self::parse_with_clamping_mode(context, input, AllowedNumericType::All)
+    }
+}

servo/tests/unit/style/animated_properties.rs

@@ -8,7 +8,7 @@ use style::properties::animated_properties::Animatable;
 use style::properties::longhands::transform::computed_value::ComputedOperation as TransformOperation;
 use style::properties::longhands::transform::computed_value::T as TransformList;
 use style::values::animated::ToAnimatedValue;
-use style::values::computed::length::Percentage;
+use style::values::computed::Percentage;
 
 fn interpolate_rgba(from: RGBA, to: RGBA, progress: f64) -> RGBA {
     let from = from.to_animated_value();

servo/tests/unit/style/attr.rs

@@ -4,8 +4,7 @@
 
 use app_units::Au;
 use style::attr::{AttrValue, LengthOrPercentageOrAuto, parse_length};
-use style::values::computed::CalcLengthOrPercentage;
-use style::values::computed::length::Percentage;
+use style::values::computed::{CalcLengthOrPercentage, Percentage};
 
 #[test]
 fn test_length_calc() {

servo/tests/unit/style/properties/serialization.rs

@@ -314,8 +314,7 @@ mod shorthand_serialization {
             assert_eq!(serialization, "border-style: solid dotted;");
         }
 
-        use style::values::specified::BorderCornerRadius;
-        use style::values::specified::length::Percentage;
+        use style::values::specified::{BorderCornerRadius, Percentage};
 
         #[test]
         fn border_radius_should_serialize_correctly() {