文件操作 - processSelector.cjs

文件: /var/www/OLD/node_modules/csso/cjs/restructure/prepare/processSelector.cjs

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'use strict';

const cssTree = require('css-tree');
const specificity = require('./specificity.cjs');

const nonFreezePseudoElements = new Set([
    'first-letter',
    'first-line',
    'after',
    'before'
]);
const nonFreezePseudoClasses = new Set([
    'link',
    'visited',
    'hover',
    'active',
    'first-letter',
    'first-line',
    'after',
    'before'
]);

function processSelector(node, usageData) {
    const pseudos = new Set();

node.prelude.children.forEach(function(simpleSelector) {
        let tagName = '*';
        let scope = 0;

simpleSelector.children.forEach(function(node) {
            switch (node.type) {
                case 'ClassSelector':
                    if (usageData && usageData.scopes) {
                        const classScope = usageData.scopes[node.name] || 0;

if (scope !== 0 && classScope !== scope) {
                            throw new Error('Selector can\'t has classes from different scopes: ' + cssTree.generate(simpleSelector));
                        }

scope = classScope;
                    }

break;

case 'PseudoClassSelector': {
                    const name = node.name.toLowerCase();

if (!nonFreezePseudoClasses.has(name)) {
                        pseudos.add(`:${name}`);
                    }

break;
                }

case 'PseudoElementSelector': {
                    const name = node.name.toLowerCase();

if (!nonFreezePseudoElements.has(name)) {
                        pseudos.add(`::${name}`);
                    }

break;
                }

case 'TypeSelector':
                    tagName = node.name.toLowerCase();
                    break;

case 'AttributeSelector':
                    if (node.flags) {
                        pseudos.add(`[${node.flags.toLowerCase()}]`);
                    }

break;

case 'Combinator':
                    tagName = '*';
                    break;
            }
        });

simpleSelector.compareMarker = specificity(simpleSelector).toString();
        simpleSelector.id = null; // pre-init property to avoid multiple hidden class
        simpleSelector.id = cssTree.generate(simpleSelector);

if (scope) {
            simpleSelector.compareMarker += ':' + scope;
        }

if (tagName !== '*') {
            simpleSelector.compareMarker += ',' + tagName;
        }
    });

// add property to all rule nodes to avoid multiple hidden class
    node.pseudoSignature = pseudos.size > 0
        ? [...pseudos].sort().join(',')
        : false;
}

module.exports = processSelector;

文件操作 - processSelector.cjs

文件: /var/www/OLD/node_modules/csso/cjs/restructure/prepare/processSelector.cjs

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