swc_css_minifier/compressor/transform_function.rs
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use swc_common::Spanned;
use swc_css_ast::*;
use super::Compressor;
impl Compressor {
pub(super) fn compress_transform_function(&self, component_value: &mut ComponentValue) {
match component_value {
ComponentValue::Function(function)
if function.name == "translate" && function.value.len() == 3 =>
{
match (function.value.first(), function.value.get(2)) {
(Some(first), Some(ComponentValue::Integer(second))) if second.value == 0 => {
function.value = vec![first.clone()];
}
(Some(ComponentValue::Integer(first)), Some(second)) if first.value == 0 => {
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "translatey".into(),
raw: None,
});
function.value = vec![second.clone()];
}
_ => {}
}
}
ComponentValue::Function(function)
if function.name == "translate3d" && function.value.len() == 5 =>
{
match (
function.value.first(),
function.value.get(2),
function.value.get(4),
) {
(
Some(ComponentValue::Integer(first)),
Some(ComponentValue::Integer(second)),
Some(third),
) if first.value == 0 && second.value == 0 => {
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "translatez".into(),
raw: None,
});
function.value = vec![third.clone()];
}
_ => {}
}
}
ComponentValue::Function(function)
if function.name == "scale" && function.value.len() == 3 =>
{
match (function.value.first(), function.value.get(2)) {
(
Some(first @ ComponentValue::Integer(first_number)),
Some(ComponentValue::Integer(second_number)),
) if first_number.value == second_number.value => {
function.value = vec![first.clone()];
}
(Some(first), Some(ComponentValue::Integer(second_number)))
if second_number.value == 1 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "scalex".into(),
raw: None,
});
function.value = vec![first.clone()];
}
(Some(ComponentValue::Integer(first_number)), Some(second))
if first_number.value == 1 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "scaley".into(),
raw: None,
});
function.value = vec![second.clone()];
}
_ => {}
}
}
ComponentValue::Function(function)
if function.name == "scale3d" && function.value.len() == 5 =>
{
match (
function.value.first(),
function.value.get(2),
function.value.get(4),
) {
(
Some(first),
Some(ComponentValue::Integer(second_number)),
Some(ComponentValue::Integer(third_number)),
) if second_number.value == 1 && third_number.value == 1 => {
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "scalex".into(),
raw: None,
});
function.value = vec![first.clone()];
}
(
Some(ComponentValue::Integer(first_number)),
Some(second),
Some(ComponentValue::Integer(third_number)),
) if first_number.value == 1 && third_number.value == 1 => {
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "scaley".into(),
raw: None,
});
function.value = vec![second.clone()];
}
(
Some(ComponentValue::Integer(first_number)),
Some(ComponentValue::Integer(second_number)),
Some(third),
) if first_number.value == 1 && second_number.value == 1 => {
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "scalez".into(),
raw: None,
});
function.value = vec![third.clone()];
}
_ => {}
}
}
ComponentValue::Function(function)
if function.name == "matrix3d" && function.value.len() == 31 =>
{
match (
function.value.first(),
function.value.get(1),
function.value.get(2),
function.value.get(3),
function.value.get(4),
function.value.get(6),
function.value.get(8),
function.value.get(9),
function.value.get(10),
function.value.get(11),
function.value.get(12),
function.value.get(14),
function.value.get(16),
function.value.get(18),
function.value.get(20),
function.value.get(22),
function.value.get(24),
function.value.get(25),
function.value.get(26),
function.value.get(28),
function.value.get(30),
) {
(
Some(first),
Some(first_comma),
Some(second),
Some(second_comma),
Some(ComponentValue::Integer(third_number)),
Some(ComponentValue::Integer(fourth_number)),
Some(fifth),
Some(fifth_comma),
Some(sixth),
Some(sixth_comma),
Some(ComponentValue::Integer(seventh_number)),
Some(ComponentValue::Integer(eighth_number)),
Some(ComponentValue::Integer(ninth_number)),
Some(ComponentValue::Integer(tenth_number)),
Some(ComponentValue::Integer(eleventh_number)),
Some(ComponentValue::Integer(twelfth_number)),
Some(thirteenth),
Some(thirteenth_comma),
Some(fourteenth),
Some(ComponentValue::Integer(fifteenth_number)),
Some(ComponentValue::Integer(sixteenth_number)),
) if third_number.value == 0
&& fourth_number.value == 0
&& seventh_number.value == 0
&& eighth_number.value == 0
&& ninth_number.value == 0
&& tenth_number.value == 0
&& eleventh_number.value == 1
&& twelfth_number.value == 0
&& fifteenth_number.value == 0
&& sixteenth_number.value == 1 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "matrix".into(),
raw: None,
});
function.value = vec![
first.clone(),
first_comma.clone(),
second.clone(),
second_comma.clone(),
fifth.clone(),
fifth_comma.clone(),
sixth.clone(),
sixth_comma.clone(),
thirteenth.clone(),
thirteenth_comma.clone(),
fourteenth.clone(),
];
}
_ => {}
}
}
ComponentValue::Function(function)
if function.name == "rotate3d" && function.value.len() == 7 =>
{
match (
function.value.first(),
function.value.get(2),
function.value.get(4),
function.value.get(6),
) {
(
Some(ComponentValue::Integer(first_number)),
Some(ComponentValue::Integer(second_number)),
Some(ComponentValue::Integer(third_number)),
Some(fourth_value),
) if first_number.value == 1
&& second_number.value == 0
&& third_number.value == 0 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "rotatex".into(),
raw: None,
});
function.value = vec![fourth_value.clone()];
}
(
Some(ComponentValue::Integer(first_number)),
Some(ComponentValue::Integer(second_number)),
Some(ComponentValue::Integer(third_number)),
Some(fourth_value),
) if first_number.value == 0
&& second_number.value == 1
&& third_number.value == 0 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "rotatey".into(),
raw: None,
});
function.value = vec![fourth_value.clone()];
}
(
Some(ComponentValue::Integer(first_number)),
Some(ComponentValue::Integer(second_number)),
Some(ComponentValue::Integer(third_number)),
Some(fourth_value),
) if first_number.value == 0
&& second_number.value == 0
&& third_number.value == 1 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "rotate".into(),
raw: None,
});
function.value = vec![fourth_value.clone()];
}
_ => {}
}
}
ComponentValue::Function(function)
if function.name == "rotatez" && function.value.len() == 1 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "rotate".into(),
raw: None,
});
}
ComponentValue::Function(function)
if function.name == "skew" && function.value.len() == 3 =>
{
match (function.value.first(), function.value.get(2)) {
(Some(first), Some(ComponentValue::Integer(second_number)))
if second_number.value == 0 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "skewx".into(),
raw: None,
});
function.value = vec![first.clone()];
}
(Some(ComponentValue::Integer(first_number)), Some(second))
if first_number.value == 0 =>
{
function.name = FunctionName::Ident(Ident {
span: function.name.span(),
value: "skewy".into(),
raw: None,
});
function.value = vec![second.clone()];
}
_ => {}
}
}
_ => {}
}
}
}