47 lines
1.8 KiB
Rust
47 lines
1.8 KiB
Rust
use std::collections::BTreeMap;
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use super::Builtin;
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use crate::common::QuoteKind;
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use crate::value::Value;
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pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
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decl!(f "if", |args| {
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let cond: &Value = arg!(args, 0, "condition");
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let if_true = arg!(args, 1, "if-true").clone();
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let if_false = arg!(args, 2, "if-false").clone();
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if cond.is_true() {
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Some(if_true)
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} else {
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Some(if_false)
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}
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});
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decl!(f "feature-exists", |args| {
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let feature: &Value = arg!(args, 0, "feature");
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match feature.clone().unquote().to_string().as_str() {
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// A local variable will shadow a global variable unless
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// `!global` is used.
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"global-variable-shadowing" => Some(Value::False),
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// the @extend rule will affect selectors nested in pseudo-classes
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// like :not()
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"extend-selector-pseudoclass" => Some(Value::False),
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// Full support for unit arithmetic using units defined in the
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// [Values and Units Level 3][] spec.
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"units-level-3" => Some(Value::False),
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// The Sass `@error` directive is supported.
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"at-error" => Some(Value::True),
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// The "Custom Properties Level 1" spec is supported. This means
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// that custom properties are parsed statically, with only
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// interpolation treated as SassScript.
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"custom-property" => Some(Value::False),
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_ => Some(Value::False),
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}
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});
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decl!(f "unit", |args| {
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let number = arg!(args, 0, "number");
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let unit = match number {
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Value::Dimension(_, u) => u.to_string(),
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_ => String::new()
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};
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Some(Value::Ident(unit, QuoteKind::Double))
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});
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} |