grass/src/common.rs

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Rust
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use std::convert::TryFrom;
use std::fmt::{self, Display};
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum Symbol {
/// .
Period,
/// #
Hash,
/// @
At,
/// $
Dollar,
/// (
OpenParen,
/// )
CloseParen,
/// {
OpenBrace,
/// }
CloseBrace,
/// [
OpenBracket,
/// ]
CloseBracket,
/// ,
Comma,
/// +
Plus,
/// -
Minus,
/// *
Mul,
/// /
Div,
/// :
Colon,
/// ;
SemiColon,
/// ~
Tilde,
/// >
Gt,
/// <
Lt,
/// ^
Xor,
/// =
Equal,
/// |
BitOr,
/// &
BitAnd,
/// %
Percent,
/// "
DoubleQuote,
/// '
SingleQuote,
}
impl Display for Symbol {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Symbol::Period => write!(f, "."),
Symbol::Hash => write!(f, "#"),
Symbol::At => write!(f, "@"),
Symbol::Dollar => write!(f, "$"),
Symbol::OpenParen => write!(f, "("),
Symbol::CloseParen => write!(f, "),"),
Symbol::OpenBrace => write!(f, "{{"),
Symbol::CloseBrace => write!(f, "}}"),
Symbol::OpenBracket => write!(f, "["),
Symbol::CloseBracket => write!(f, "]"),
Symbol::Comma => write!(f, ","),
Symbol::Plus => write!(f, "+"),
Symbol::Minus => write!(f, "-"),
Symbol::Mul => write!(f, "*"),
Symbol::Div => write!(f, "/"),
Symbol::Colon => write!(f, ":"),
Symbol::SemiColon => write!(f, ";"),
Symbol::Tilde => write!(f, "~"),
Symbol::Gt => write!(f, ">"),
Symbol::Lt => write!(f, "<"),
Symbol::Xor => write!(f, "^"),
Symbol::Equal => write!(f, "="),
Symbol::BitOr => write!(f, "|"),
Symbol::BitAnd => write!(f, "&"),
Symbol::Percent => write!(f, "%"),
Symbol::DoubleQuote => write!(f, "\""),
Symbol::SingleQuote => write!(f, "'"),
}
}
}
impl TryFrom<char> for Symbol {
type Error = &'static str;
fn try_from(c: char) -> Result<Self, Self::Error> {
match c {
'.' => Ok(Symbol::Period),
'#' => Ok(Symbol::Hash),
'@' => Ok(Symbol::At),
'$' => Ok(Symbol::Dollar),
'(' => Ok(Symbol::OpenParen),
')' => Ok(Symbol::CloseParen),
'{' => Ok(Symbol::OpenBrace),
'}' => Ok(Symbol::CloseBrace),
'[' => Ok(Symbol::OpenBracket),
']' => Ok(Symbol::CloseBracket),
',' => Ok(Symbol::Comma),
'+' => Ok(Symbol::Plus),
'-' => Ok(Symbol::Minus),
'*' => Ok(Symbol::Mul),
'/' => Ok(Symbol::Div),
':' => Ok(Symbol::Colon),
';' => Ok(Symbol::SemiColon),
'~' => Ok(Symbol::Tilde),
'>' => Ok(Symbol::Gt),
'<' => Ok(Symbol::Lt),
'^' => Ok(Symbol::Xor),
'=' => Ok(Symbol::Equal),
'|' => Ok(Symbol::BitOr),
'&' => Ok(Symbol::BitAnd),
'%' => Ok(Symbol::Percent),
'"' => Ok(Symbol::DoubleQuote),
'\'' => Ok(Symbol::SingleQuote),
_ => Err("invalid symbol"),
}
}
}
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct MediaQuery {}
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum AtRule {
// SASS specific @rules
/// Loads mixins, functions, and variables from other Sass stylesheets, and combines CSS from multiple stylesheets together
Use,
/// Loads a Sass stylesheet and makes its mixins, functions, and variables available when your stylesheet is loaded with the `@use` rule
Forward,
/// Extends the CSS at-rule to load styles, mixins, functions, and variables from other stylesheets
Import,
Mixin,
Include,
/// Defines custom functions that can be used in SassScript expressions
Function,
/// Allows selectors to inherit styles from one another
Extend,
/// Puts styles within it at the root of the CSS document
AtRoot,
/// Causes compilation to fail with an error message
Error,
/// Prints a warning without stopping compilation entirely
Warn,
/// Prints a message for debugging purposes
Debug,
If,
Each,
For,
While,
// CSS @rules
/// Defines the character set used by the style sheet
Charset,
/// Tells the CSS engine that all its content must be considered prefixed with an XML namespace
Namespace,
/// A conditional group rule that will apply its content if the device meets the criteria of the condition defined using a media query
Media,
/// A conditional group rule that will apply its content if the browser meets the criteria of the given condition
Supports,
/// Describes the aspect of layout changes that will be applied when printing the document
Page,
/// Describes the aspect of an external font to be downloaded
FontFace,
/// Describes the aspect of intermediate steps in a CSS animation sequence
Keyframes,
// @rules related to @font-feature-values
FontFeatureValues,
Swash,
Ornaments,
Annotation,
Stylistic,
Styleset,
CharacterVariant,
// Experimental CSS @rules
/// Describes the aspects of the viewport for small screen devices
///
/// Currently at the Working Draft stage
Viewport,
/// A conditional group rule that will apply its content if the document in which the style sheet is applied meets the criteria of the given condition
///
/// Deferred to Level 4 of CSS Spec
Document,
/// Defines specific counter styles that are not part of the predefined set of styles
///
/// At the Candidate Recommendation stage
CounterStyle,
}
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum Whitespace {
Space,
Tab,
Newline,
CarriageReturn,
}
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impl Display for Whitespace {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Whitespace::Space => write!(f, " "),
Whitespace::Tab => write!(f, "\t"),
Whitespace::Newline => writeln!(f),
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Whitespace::CarriageReturn => write!(f, "\r"),
}
}
}
impl TryFrom<char> for Whitespace {
type Error = &'static str;
fn try_from(c: char) -> Result<Self, Self::Error> {
match c {
' ' => Ok(Whitespace::Space),
'\t' => Ok(Whitespace::Tab),
'\n' => Ok(Whitespace::Newline),
'\r' => Ok(Whitespace::CarriageReturn),
_ => Err("invalid whitespace"),
}
}
}
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#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum Op {
Equal,
NotEqual,
GreaterThanEqual,
LessThanEqual,
}
impl Display for Op {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Op::Equal => write!(f, "=="),
Op::NotEqual => write!(f, "!="),
Op::GreaterThanEqual => write!(f, ">="),
Op::LessThanEqual => write!(f, "<="),
}
}
}
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum Keyword {
Important,
Infinity,
NaN,
Auto,
Inherit,
Initial,
Unset,
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True,
False,
Not,
And,
Or,
Null,
}
impl Display for Keyword {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Keyword::Important => write!(f, "!important"),
Keyword::Infinity => write!(f, "Infinity"),
Keyword::NaN => write!(f, "NaN"),
Keyword::Auto => write!(f, "auto"),
Keyword::Inherit => write!(f, "inherit"),
Keyword::Initial => write!(f, "initial"),
Keyword::Unset => write!(f, "unset"),
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Keyword::True => write!(f, "true"),
Keyword::False => write!(f, "false"),
Keyword::Not => write!(f, "not"),
Keyword::And => write!(f, "and"),
Keyword::Or => write!(f, "or"),
Keyword::Null => write!(f, "null"),
}
}
}
impl Into<&'static str> for Keyword {
fn into(self) -> &'static str {
match self {
Keyword::Important => "!important",
Keyword::Infinity => "Infinity",
Keyword::NaN => "NaN",
Keyword::Auto => "auto",
Keyword::Inherit => "inherit",
Keyword::Initial => "initial",
Keyword::Unset => "unset",
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Keyword::True => "true",
Keyword::False => "false",
Keyword::Not => "not",
Keyword::And => "and",
Keyword::Or => "or",
Keyword::Null => "null",
}
}
}
impl TryFrom<&str> for Keyword {
type Error = &'static str;
fn try_from(kw: &str) -> Result<Self, Self::Error> {
// todo: case insensitive?
match kw {
"important" => Ok(Keyword::Important),
"infinity" => Ok(Keyword::Infinity),
"nan" => Ok(Keyword::NaN),
"auto" => Ok(Keyword::Auto),
"inherit" => Ok(Keyword::Inherit),
"initial" => Ok(Keyword::Initial),
"unset" => Ok(Keyword::Unset),
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"true" => Ok(Keyword::True),
"false" => Ok(Keyword::False),
"not" => Ok(Keyword::Not),
"and" => Ok(Keyword::And),
"or" => Ok(Keyword::Or),
"null" => Ok(Keyword::Null),
_ => Err("invalid keyword"),
}
}
}
#[derive(Debug)]
pub enum Color {
AliceBlue, // = 0xF0F8FF,
AntiqueWhite, // = 0xFAEBD7,
Aqua, // = 0x00FFFF,
Aquamarine, // = 0x7FFFD4,
Azure, // = 0xF0FFFF,
Beige, // = 0xF5F5DC,
Bisque, // = 0xFFE4C4,
Black, // = 0x000000,
BlanchedAlmond, // = 0xFFEBCD,
Blue, // = 0x0000FF,
BlueViolet, // = 0x8A2BE2,
Brown, // = 0xA52A2A,
BurlyWood, // = 0xDEB887,
CadetBlue, // = 0x5F9EA0,
Chartreuse, // = 0x7FFF00,
Chocolate, // = 0xD2691E,
Coral, // = 0xFF7F50,
CornflowerBlue, // = 0x6495ED,
Cornsilk, // = 0xFFF8DC,
Crimson, // = 0xDC143C,
Cyan, //0x00FFFF
DarkBlue, // = 0x00008B,
DarkCyan, // = 0x008B8B,
DarkGoldenRod, // = 0xB8860B,
DarkGray, // = 0xA9A9A9,
DarkGrey, //0xA9A9A9
DarkGreen, // = 0x006400,
DarkKhaki, // = 0xBDB76B,
DarkMagenta, // = 0x8B008B,
DarkOliveGreen, // = 0x556B2F,
DarkOrange, // = 0xFF8C00,
DarkOrchid, // = 0x9932CC,
DarkRed, // = 0x8B0000,
DarkSalmon, // = 0xE9967A,
DarkSeaGreen, // = 0x8FBC8F,
DarkSlateBlue, // = 0x483D8B,
DarkSlateGray, // = 0x2F4F4F,
DarkSlateGrey, //0x2F4F4F
DarkTurquoise, // = 0x00CED1,
DarkViolet, // = 0x9400D3,
DeepPink, // = 0xFF1493,
DeepSkyBlue, // = 0x00BFFF,
DimGray, // = 0x696969,
DimGrey, //0x696969
DodgerBlue, // = 0x1E90FF,
FireBrick, // = 0xB22222,
FloralWhite, // = 0xFFFAF0,
ForestGreen, // = 0x228B22,
Fuchsia, // = 0xFF00FF,
Gainsboro, // = 0xDCDCDC,
GhostWhite, // = 0xF8F8FF,
Gold, // = 0xFFD700,
GoldenRod, // = 0xDAA520,
Gray, // = 0x808080,
Grey, //0x808080
Green, // = 0x008000,
GreenYellow, // = 0xADFF2F,
HoneyDew, // = 0xF0FFF0,
HotPink, // = 0xFF69B4,
IndianRed, // = 0xCD5C5C,
Indigo, // = 0x4B0082,
Ivory, // = 0xFFFFF0,
Khaki, // = 0xF0E68C,
Lavender, // = 0xE6E6FA,
LavenderBlush, // = 0xFFF0F5,
LawnGreen, // = 0x7CFC00,
LemonChiffon, // = 0xFFFACD,
LightBlue, // = 0xADD8E6,
LightCoral, // = 0xF08080,
LightCyan, // = 0xE0FFFF,
LightGoldenRodYellow, // = 0xFAFAD2,
LightGray, // = 0xD3D3D3,
LightGrey, //0xD3D3D3
LightGreen, // = 0x90EE90,
LightPink, // = 0xFFB6C1,
LightSalmon, // = 0xFFA07A,
LightSeaGreen, // = 0x20B2AA,
LightSkyBlue, // = 0x87CEFA,
LightSlateGray, // = 0x778899,
LightSlateGrey, //0x778899
LightSteelBlue, // = 0xB0C4DE,
LightYellow, // = 0xFFFFE0,
Lime, // = 0x00FF00,
LimeGreen, // = 0x32CD32,
Linen, // = 0xFAF0E6,
Magenta, //0xFF00FF
Maroon, // = 0x800000,
MediumAquaMarine, // = 0x66CDAA,
MediumBlue, // = 0x0000CD,
MediumOrchid, // = 0xBA55D3,
MediumPurple, // = 0x9370DB,
MediumSeaGreen, // = 0x3CB371,
MediumSlateBlue, // = 0x7B68EE,
MediumSpringGreen, // = 0x00FA9A,
MediumTurquoise, // = 0x48D1CC,
MediumVioletRed, // = 0xC71585,
MidnightBlue, // = 0x191970,
MintCream, // = 0xF5FFFA,
MistyRose, // = 0xFFE4E1,
Moccasin, // = 0xFFE4B5,
NavajoWhite, // = 0xFFDEAD,
Navy, // = 0x000080,
OldLace, // = 0xFDF5E6,
Olive, // = 0x808000,
OliveDrab, // = 0x6B8E23,
Orange, // = 0xFFA500,
OrangeRed, // = 0xFF4500,
Orchid, // = 0xDA70D6,
PaleGoldenRod, // = 0xEEE8AA,
PaleGreen, // = 0x98FB98,
PaleTurquoise, // = 0xAFEEEE,
PaleVioletRed, // = 0xDB7093,
PapayaWhip, // = 0xFFEFD5,
PeachPuff, // = 0xFFDAB9,
Peru, // = 0xCD853F,
Pink, // = 0xFFC0CB,
Plum, // = 0xDDA0DD,
PowderBlue, // = 0xB0E0E6,
Purple, // = 0x800080,
RebeccaPurple, // = 0x663399,
Red, // = 0xFF0000,
RosyBrown, // = 0xBC8F8F,
RoyalBlue, // = 0x4169E1,
SaddleBrown, // = 0x8B4513,
Salmon, // = 0xFA8072,
SandyBrown, // = 0xF4A460,
SeaGreen, // = 0x2E8B57,
SeaShell, // = 0xFFF5EE,
Sienna, // = 0xA0522D,
Silver, // = 0xC0C0C0,
SkyBlue, // = 0x87CEEB,
SlateBlue, // = 0x6A5ACD,
SlateGray, // = 0x708090,
SlateGrey, //0x708090
Snow, // = 0xFFFAFA,
SpringGreen, // = 0x00FF7F,
SteelBlue, // = 0x4682B4,
Tan, // = 0xD2B48C,
Teal, // = 0x008080,
Thistle, // = 0xD8BFD8,
Tomato, // = 0xFF6347,
Turquoise, // = 0x40E0D0,
Violet, // = 0xEE82EE,
Wheat, // = 0xF5DEB3,
White, // = 0xFFFFFF,
WhiteSmoke, // = 0xF5F5F5,
Yellow, // = 0xFFFF00,
YellowGreen, // = 0x9ACD32,
Other(u32),
}
impl TryFrom<&str> for Color {
type Error = &'static str;
fn try_from(string: &str) -> Result<Self, Self::Error> {
match string {
"aliceblue" => Ok(Color::AliceBlue),
"antiquewhite" => Ok(Color::AntiqueWhite),
"aqua" => Ok(Color::Aqua),
"aquamarine" => Ok(Color::Aquamarine),
"azure" => Ok(Color::Azure),
"beige" => Ok(Color::Beige),
"bisque" => Ok(Color::Bisque),
"black" => Ok(Color::Black),
"blanchedalmond" => Ok(Color::BlanchedAlmond),
"blue" => Ok(Color::Blue),
"blueviolet" => Ok(Color::BlueViolet),
"brown" => Ok(Color::Brown),
"burlywood" => Ok(Color::BurlyWood),
"cadetblue" => Ok(Color::CadetBlue),
"chartreuse" => Ok(Color::Chartreuse),
"chocolate" => Ok(Color::Chocolate),
"coral" => Ok(Color::Coral),
"cornflowerblue" => Ok(Color::CornflowerBlue),
"cornsilk" => Ok(Color::Cornsilk),
"crimson" => Ok(Color::Crimson),
"cyan" => Ok(Color::Cyan),
"darkblue" => Ok(Color::DarkBlue),
"darkcyan" => Ok(Color::DarkCyan),
"darkgoldenrod" => Ok(Color::DarkGoldenRod),
"darkgray" => Ok(Color::DarkGray),
"darkgrey" => Ok(Color::DarkGrey),
"darkgreen" => Ok(Color::DarkGreen),
"darkkhaki" => Ok(Color::DarkKhaki),
"darkmagenta" => Ok(Color::DarkMagenta),
"darkolivegreen" => Ok(Color::DarkOliveGreen),
"darkorange" => Ok(Color::DarkOrange),
"darkorchid" => Ok(Color::DarkOrchid),
"darkred" => Ok(Color::DarkRed),
"darksalmon" => Ok(Color::DarkSalmon),
"darkseagreen" => Ok(Color::DarkSeaGreen),
"darkslateblue" => Ok(Color::DarkSlateBlue),
"darkslategray" => Ok(Color::DarkSlateGray),
"darkslategrey" => Ok(Color::DarkSlateGrey),
"darkturquoise" => Ok(Color::DarkTurquoise),
"darkviolet" => Ok(Color::DarkViolet),
"deeppink" => Ok(Color::DeepPink),
"deepskyblue" => Ok(Color::DeepSkyBlue),
"dimgray" => Ok(Color::DimGray),
"dimgrey" => Ok(Color::DimGrey),
"dodgerblue" => Ok(Color::DodgerBlue),
"firebrick" => Ok(Color::FireBrick),
"floralwhite" => Ok(Color::FloralWhite),
"forestgreen" => Ok(Color::ForestGreen),
"fuchsia" => Ok(Color::Fuchsia),
"gainsboro" => Ok(Color::Gainsboro),
"ghostwhite" => Ok(Color::GhostWhite),
"gold" => Ok(Color::Gold),
"goldenrod" => Ok(Color::GoldenRod),
"gray" => Ok(Color::Gray),
"grey" => Ok(Color::Grey),
"green" => Ok(Color::Green),
"greenyellow" => Ok(Color::GreenYellow),
"honeydew" => Ok(Color::HoneyDew),
"hotpink" => Ok(Color::HotPink),
"indianred" => Ok(Color::IndianRed),
"indigo" => Ok(Color::Indigo),
"ivory" => Ok(Color::Ivory),
"khaki" => Ok(Color::Khaki),
"lavender" => Ok(Color::Lavender),
"lavenderblush" => Ok(Color::LavenderBlush),
"lawngreen" => Ok(Color::LawnGreen),
"lemonchiffon" => Ok(Color::LemonChiffon),
"lightblue" => Ok(Color::LightBlue),
"lightcoral" => Ok(Color::LightCoral),
"lightcyan" => Ok(Color::LightCyan),
"lightgoldenrodyellow" => Ok(Color::LightGoldenRodYellow),
"lightgray" => Ok(Color::LightGray),
"lightgrey" => Ok(Color::LightGrey),
"lightgreen" => Ok(Color::LightGreen),
"lightpink" => Ok(Color::LightPink),
"lightsalmon" => Ok(Color::LightSalmon),
"lightseagreen" => Ok(Color::LightSeaGreen),
"lightskyblue" => Ok(Color::LightSkyBlue),
"lightslategray" => Ok(Color::LightSlateGray),
"lightslategrey" => Ok(Color::LightSlateGrey),
"lightsteelblue" => Ok(Color::LightSteelBlue),
"lightyellow" => Ok(Color::LightYellow),
"lime" => Ok(Color::Lime),
"limegreen" => Ok(Color::LimeGreen),
"linen" => Ok(Color::Linen),
"magenta" => Ok(Color::Magenta),
"maroon" => Ok(Color::Maroon),
"mediumaquamarine" => Ok(Color::MediumAquaMarine),
"mediumblue" => Ok(Color::MediumBlue),
"mediumorchid" => Ok(Color::MediumOrchid),
"mediumpurple" => Ok(Color::MediumPurple),
"mediumseagreen" => Ok(Color::MediumSeaGreen),
"mediumslateblue" => Ok(Color::MediumSlateBlue),
"mediumspringgreen" => Ok(Color::MediumSpringGreen),
"mediumturquoise" => Ok(Color::MediumTurquoise),
"mediumvioletred" => Ok(Color::MediumVioletRed),
"midnightblue" => Ok(Color::MidnightBlue),
"mintcream" => Ok(Color::MintCream),
"mistyrose" => Ok(Color::MistyRose),
"moccasin" => Ok(Color::Moccasin),
"navajowhite" => Ok(Color::NavajoWhite),
"navy" => Ok(Color::Navy),
"oldlace" => Ok(Color::OldLace),
"olive" => Ok(Color::Olive),
"olivedrab" => Ok(Color::OliveDrab),
"orange" => Ok(Color::Orange),
"orangered" => Ok(Color::OrangeRed),
"orchid" => Ok(Color::Orchid),
"palegoldenrod" => Ok(Color::PaleGoldenRod),
"palegreen" => Ok(Color::PaleGreen),
"paleturquoise" => Ok(Color::PaleTurquoise),
"palevioletred" => Ok(Color::PaleVioletRed),
"papayawhip" => Ok(Color::PapayaWhip),
"peachpuff" => Ok(Color::PeachPuff),
"peru" => Ok(Color::Peru),
"pink" => Ok(Color::Pink),
"plum" => Ok(Color::Plum),
"powderblue" => Ok(Color::PowderBlue),
"purple" => Ok(Color::Purple),
"rebeccapurple" => Ok(Color::RebeccaPurple),
"red" => Ok(Color::Red),
"rosybrown" => Ok(Color::RosyBrown),
"royalblue" => Ok(Color::RoyalBlue),
"saddlebrown" => Ok(Color::SaddleBrown),
"salmon" => Ok(Color::Salmon),
"sandybrown" => Ok(Color::SandyBrown),
"seagreen" => Ok(Color::SeaGreen),
"seashell" => Ok(Color::SeaShell),
"sienna" => Ok(Color::Sienna),
"silver" => Ok(Color::Silver),
"skyblue" => Ok(Color::SkyBlue),
"slateblue" => Ok(Color::SlateBlue),
"slategray" => Ok(Color::SlateGray),
"slategrey" => Ok(Color::SlateGrey),
"snow" => Ok(Color::Snow),
"springgreen" => Ok(Color::SpringGreen),
"steelblue" => Ok(Color::SteelBlue),
"tan" => Ok(Color::Tan),
"teal" => Ok(Color::Teal),
"thistle" => Ok(Color::Thistle),
"tomato" => Ok(Color::Tomato),
"turquoise" => Ok(Color::Turquoise),
"violet" => Ok(Color::Violet),
"wheat" => Ok(Color::Wheat),
"white" => Ok(Color::White),
"whitesmoke" => Ok(Color::WhiteSmoke),
"yellow" => Ok(Color::Yellow),
"yellowgreen" => Ok(Color::YellowGreen),
_ => Err("invalid color"),
}
}
}
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub struct Pos {
line: u32,
column: u32,
}
impl Pos {
pub const fn new() -> Self {
Pos { line: 0, column: 0 }
}
pub const fn line(self) -> u32 {
self.line
}
pub const fn column(self) -> u32 {
self.column
}
pub fn newline(&mut self) {
self.line += 1;
self.column = 0;
}
pub fn next_char(&mut self) {
self.column += 1;
}
pub fn chars(&mut self, num: u32) {
self.column += num;
}
}
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impl Display for Pos {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "line:{} col:{}", self.line, self.column)
}
}