1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use app_units::Au;
use std::fmt;
/// The real `ToCss` trait can't be implemented for types in crates that don't
/// depend on each other.
pub trait ToCss {
/// Serialize `self` in CSS syntax, writing to `dest`.
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write;
/// Serialize `self` in CSS syntax and return a string.
///
/// (This is a convenience wrapper for `to_css` and probably should not be overridden.)
#[inline]
fn to_css_string(&self) -> String {
let mut s = String::new();
self.to_css(&mut s).unwrap();
s
}
}
impl ToCss for Au {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
write!(dest, "{}px", self.to_f64_px())
}
}
macro_rules! impl_to_css_for_predefined_type {
($name: ty) => {
impl<'a> ToCss for $name {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
::cssparser::ToCss::to_css(self, dest)
}
}
};
}
impl_to_css_for_predefined_type!(f32);
impl_to_css_for_predefined_type!(i32);
impl_to_css_for_predefined_type!(u32);
impl_to_css_for_predefined_type!(::cssparser::Token<'a>);
impl_to_css_for_predefined_type!(::cssparser::RGBA);
impl_to_css_for_predefined_type!(::cssparser::Color);
#[macro_export]
macro_rules! define_css_keyword_enum {
($name: ident: $( $css: expr => $variant: ident ),+,) => {
__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]);
};
($name: ident: $( $css: expr => $variant: ident ),+) => {
__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]);
};
}
#[cfg(feature = "servo")]
#[macro_export]
macro_rules! __define_css_keyword_enum__add_optional_traits {
($name: ident [ $( $css: expr => $variant: ident ),+ ]) => {
__define_css_keyword_enum__actual! {
$name [ Deserialize, Serialize, HeapSizeOf ] [ $( $css => $variant ),+ ]
}
};
}
#[cfg(not(feature = "servo"))]
#[macro_export]
macro_rules! __define_css_keyword_enum__add_optional_traits {
($name: ident [ $( $css: expr => $variant: ident ),+ ]) => {
__define_css_keyword_enum__actual! {
$name [] [ $( $css => $variant ),+ ]
}
};
}
#[macro_export]
macro_rules! __define_css_keyword_enum__actual {
($name: ident [ $( $derived_trait: ident),* ] [ $( $css: expr => $variant: ident ),+ ]) => {
#[allow(non_camel_case_types)]
#[derive(Clone, Eq, PartialEq, Copy, Hash, RustcEncodable, Debug $(, $derived_trait )* )]
pub enum $name {
$( $variant ),+
}
impl $name {
pub fn parse(input: &mut ::cssparser::Parser) -> Result<$name, ()> {
match_ignore_ascii_case! { try!(input.expect_ident()),
$( $css => Ok($name::$variant), )+
_ => Err(())
}
}
}
impl ToCss for $name {
fn to_css<W>(&self, dest: &mut W) -> ::std::fmt::Result
where W: ::std::fmt::Write {
match *self {
$( $name::$variant => dest.write_str($css) ),+
}
}
}
}
}
pub mod specified {
use app_units::Au;
#[repr(u8)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum AllowedNumericType {
All,
NonNegative
}
impl AllowedNumericType {
#[inline]
pub fn is_ok(&self, value: f32) -> bool {
match *self {
AllowedNumericType::All => true,
AllowedNumericType::NonNegative => value >= 0.,
}
}
#[inline]
pub fn clamp(&self, val: Au) -> Au {
use std::cmp;
match *self {
AllowedNumericType::All => val,
AllowedNumericType::NonNegative => cmp::max(Au(0), val),
}
}
}
}
|
