danog/dart-sass
1
0
Fork 0
mirror of https://github.com/danog/dart-sass.git synced 2025-01-22 05:41:14 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add selector-replace().

Browse Source
This commit is contained in:
Natalie Weizenbaum 2016-09-22 14:09:35 -07:00 committed by Natalie Weizenbaum
parent 63ec19f469
commit a993a7667e
2 changed files with 28 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
lib/src/extend/extender.dart
View File

@ -32,6 +32,12 @@ class Extender {
new Extender()._extendList(
selector, {target: new Set()..add(new ExtendSource(source, null))});
static SelectorList replace(
SelectorList selector, SelectorList source, SimpleSelector target) =>
new Extender()._extendList(
selector, {target: new Set()..add(new ExtendSource(source, null))},
replace: true);
CssStyleRule addSelector(
CssValue<SelectorList> selectorValue, FileSpan span) {
var selector = selectorValue.value;
@ -93,14 +99,15 @@ class Extender {
}
SelectorList _extendList(
SelectorList list, Map<SimpleSelector, Set<ExtendSource>> extensions) {
SelectorList list, Map<SimpleSelector, Set<ExtendSource>> extensions,
{bool replace: false}) {
// This could be written more simply using [List.map], but we want to avoid
// any allocations in the common case where no extends apply.
var changed = false;
List<ComplexSelector> newList;
for (var i = 0; i < list.components.length; i++) {
var complex = list.components[i];
var extended = _extendComplex(complex, extensions);
var extended = _extendComplex(complex, extensions, replace: replace);
if (extended == null) {
if (changed) newList.add(complex);
} else {
@ -116,7 +123,8 @@ class Extender {
}
Iterable<ComplexSelector> _extendComplex(ComplexSelector complex,
Map<SimpleSelector, Set<ExtendSource>> extensions) {
Map<SimpleSelector, Set<ExtendSource>> extensions,
{bool replace: false}) {
// This could be written more simply using [List.map], but we want to avoid
// any allocations in the common case where no extends apply.
var changed = false;
@ -124,7 +132,7 @@ class Extender {
for (var i = 0; i < complex.components.length; i++) {
var component = complex.components[i];
if (component is CompoundSelector) {
var extended = _extendCompound(component, extensions);
var extended = _extendCompound(component, extensions, replace: replace);
// TODO: follow the first law of extend (https://github.com/sass/sass/blob/7774aa3/lib/sass/selector/sequence.rb#L114-L118)
if (extended == null) {
if (changed) {
@ -162,7 +170,8 @@ class Extender {
List<List<ComplexSelectorComponent>> _extendCompound(
CompoundSelector compound,
Map<SimpleSelector, Set<ExtendSource>> extensions) {
Map<SimpleSelector, Set<ExtendSource>> extensions,
{bool replace: false}) {
var changed = false;
List<List<ComplexSelectorComponent>> extended;
for (var i = 0; i < compound.components.length; i++) {
@ -183,9 +192,11 @@ class Extender {
if (unified == null) continue;
if (!changed) {
extended = [
[compound]
];
extended = replace
? []
: [
[compound]
];
}
changed = true;
extended.add(complex.components

9
lib/src/functions.dart
View File

@ -730,6 +730,15 @@ void defineCoreFunctions(Environment environment) {
return Extender.extend(selector, source, target).asSassList;
});
environment.defineFunction(
"selector-replace", r"$selector, $original, $replacement", (arguments) {
var selector = arguments[0].assertSelector(name: "selector");
var target = arguments[1].assertSimpleSelector(name: "original");
var source = arguments[2].assertSelector(name: "replacement");
return Extender.replace(selector, source, target).asSassList;
});
// ## Introspection
environment.defineFunction("inspect", r"$value",