@use 'config';
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@use 'sass:meta';
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@use 'sass:string';
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// BEM support Func
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@function selectorToString($selector) {
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$selector: meta.inspect($selector);
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$selector: string.slice($selector, 2, -2);
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@return $selector;
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}
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@function containsModifier($selector) {
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$selector: selectorToString($selector);
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@if string.index($selector, config.$modifier-separator) {
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@return true;
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} @else {
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@return false;
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}
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}
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@function containWhenFlag($selector) {
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$selector: selectorToString($selector);
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@if string.index($selector, '.' + config.$state-prefix) {
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@return true;
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} @else {
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@return false;
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}
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}
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@function containPseudoClass($selector) {
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$selector: selectorToString($selector);
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@if string.index($selector, ':') {
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@return true;
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} @else {
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@return false;
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}
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}
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@function hitAllSpecialNestRule($selector) {
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@return containsModifier($selector) or containWhenFlag($selector) or
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containPseudoClass($selector);
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}
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// join var name
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// joinVarName(('button', 'text-color')) => '--el-button-text-color'
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@function joinVarName($list) {
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$name: '--' + config.$namespace;
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@each $item in $list {
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@if $item != '' {
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$name: $name + '-' + $item;
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}
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}
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@return $name;
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}
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// getCssVarName('button', 'text-color') => '--el-button-text-color'
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@function getCssVarName($args...) {
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@return joinVarName($args);
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}
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// getCssVar('button', 'text-color') => var(--el-button-text-color)
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@function getCssVar($args...) {
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@return var(#{joinVarName($args)});
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}
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// getCssVarWithDefault(('button', 'text-color'), red) => var(--el-button-text-color, red)
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@function getCssVarWithDefault($args, $default) {
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@return var(#{joinVarName($args)}, #{$default});
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}
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// bem('block', 'element', 'modifier') => 'el-block__element--modifier'
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@function bem($block, $element: '', $modifier: '') {
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$name: config.$namespace + config.$common-separator + $block;
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@if $element != '' {
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$name: $name + config.$element-separator + $element;
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}
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@if $modifier != '' {
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$name: $name + config.$modifier-separator + $modifier;
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}
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// @debug $name;
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@return $name;
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}
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