tailwindcss/lib/util/formatVariantSelector.js

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
function _export(target, all) {
    for(var name in all)Object.defineProperty(target, name, {
        enumerable: true,
        get: all[name]
    });
}
_export(exports, {
    selectorFunctions: ()=>selectorFunctions,
    formatVariantSelector: ()=>formatVariantSelector,
    finalizeSelector: ()=>finalizeSelector
});
const _postcssSelectorParser = /*#__PURE__*/ _interopRequireDefault(require("postcss-selector-parser"));
const _unesc = /*#__PURE__*/ _interopRequireDefault(require("postcss-selector-parser/dist/util/unesc"));
const _escapeClassName = /*#__PURE__*/ _interopRequireDefault(require("../util/escapeClassName"));
const _prefixSelector = /*#__PURE__*/ _interopRequireDefault(require("../util/prefixSelector"));
function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
        default: obj
    };
}
var ref;
let MERGE = ":merge";
let PARENT = "&";
let selectorFunctions = new Set([
    MERGE
]);
function formatVariantSelector(current, ...others) {
    for (let other of others){
        let incomingValue = resolveFunctionArgument(other, MERGE);
        if (incomingValue !== null) {
            let existingValue = resolveFunctionArgument(current, MERGE, incomingValue);
            if (existingValue !== null) {
                let existingTarget = `${MERGE}(${incomingValue})`;
                let splitIdx = other.indexOf(existingTarget);
                let addition = other.slice(splitIdx + existingTarget.length).split(" ")[0];
                current = current.replace(existingTarget, existingTarget + addition);
                continue;
            }
        }
        current = other.replace(PARENT, current);
    }
    return current;
}
/**
 * Given any node in a selector this gets the "simple" selector it's a part of
 * A simple selector is just a list of nodes without any combinators
 * Technically :is(), :not(), :has(), etc… can have combinators but those are nested
 * inside the relevant node and won't be picked up so they're fine to ignore
 *
 * @param {import('postcss-selector-parser').Node} node
 * @returns {import('postcss-selector-parser').Node[]}
 **/ function simpleSelectorForNode(node) {
    /** @type {import('postcss-selector-parser').Node[]} */ let nodes = [];
    // Walk backwards until we hit a combinator node (or the start)
    while(node.prev() && node.prev().type !== "combinator"){
        node = node.prev();
    }
    // Now record all non-combinator nodes until we hit one (or the end)
    while(node && node.type !== "combinator"){
        nodes.push(node);
        node = node.next();
    }
    return nodes;
}
/**
 * Resorts the nodes in a selector to ensure they're in the correct order
 * Tags go before classes, and pseudo classes go after classes
 *
 * @param {import('postcss-selector-parser').Selector} sel
 * @returns {import('postcss-selector-parser').Selector}
 **/ function resortSelector(sel) {
    sel.sort((a, b)=>{
        if (a.type === "tag" && b.type === "class") {
            return -1;
        } else if (a.type === "class" && b.type === "tag") {
            return 1;
        } else if (a.type === "class" && b.type === "pseudo" && b.value.startsWith("::")) {
            return -1;
        } else if (a.type === "pseudo" && a.value.startsWith("::") && b.type === "class") {
            return 1;
        }
        return sel.index(a) - sel.index(b);
    });
    return sel;
}
function eliminateIrrelevantSelectors(sel, base) {
    let hasClassesMatchingCandidate = false;
    sel.walk((child)=>{
        if (child.type === "class" && child.value === base) {
            hasClassesMatchingCandidate = true;
            return false // Stop walking
            ;
        }
    });
    if (!hasClassesMatchingCandidate) {
        sel.remove();
    }
// We do NOT recursively eliminate sub selectors that don't have the base class
// as this is NOT a safe operation. For example, if we have:
// `.space-x-2 > :not([hidden]) ~ :not([hidden])`
// We cannot remove the [hidden] from the :not() because it would change the
// meaning of the selector.
// TODO: Can we do this for :matches, :is, and :where?
}
var ref1;
function finalizeSelector(format, { selector , candidate , context , isArbitraryVariant , // Split by the separator, but ignore the separator inside square brackets:
//
// E.g.: dark:lg:hover:[paint-order:markers]
//           ┬  ┬     ┬            ┬
//           │  │     │            ╰── We will not split here
//           ╰──┴─────┴─────────────── We will split here
//
base =candidate.split(new RegExp(`\\${(ref1 = context === null || context === void 0 ? void 0 : (ref = context.tailwindConfig) === null || ref === void 0 ? void 0 : ref.separator) !== null && ref1 !== void 0 ? ref1 : ":"}(?![^[]*\\])`)).pop()  }) {
    var ref2;
    let ast = (0, _postcssSelectorParser.default)().astSync(selector);
    // We explicitly DO NOT prefix classes in arbitrary variants
    if ((context === null || context === void 0 ? void 0 : (ref2 = context.tailwindConfig) === null || ref2 === void 0 ? void 0 : ref2.prefix) && !isArbitraryVariant) {
        format = (0, _prefixSelector.default)(context.tailwindConfig.prefix, format);
    }
    format = format.replace(PARENT, `.${(0, _escapeClassName.default)(candidate)}`);
    let formatAst = (0, _postcssSelectorParser.default)().astSync(format);
    // Remove extraneous selectors that do not include the base class/candidate being matched against
    // For example if we have a utility defined `.a, .b { color: red}`
    // And the formatted variant is sm:b then we want the final selector to be `.sm\:b` and not `.a, .sm\:b`
    ast.each((sel)=>eliminateIrrelevantSelectors(sel, base));
    // Normalize escaped classes, e.g.:
    //
    // The idea would be to replace the escaped `base` in the selector with the
    // `format`. However, in css you can escape the same selector in a few
    // different ways. This would result in different strings and therefore we
    // can't replace it properly.
    //
    //               base: bg-[rgb(255,0,0)]
    //   base in selector: bg-\\[rgb\\(255\\,0\\,0\\)\\]
    //       escaped base: bg-\\[rgb\\(255\\2c 0\\2c 0\\)\\]
    //
    ast.walkClasses((node)=>{
        if (node.raws && node.value.includes(base)) {
            node.raws.value = (0, _escapeClassName.default)((0, _unesc.default)(node.raws.value));
        }
    });
    let simpleStart = _postcssSelectorParser.default.comment({
        value: "/*__simple__*/"
    });
    let simpleEnd = _postcssSelectorParser.default.comment({
        value: "/*__simple__*/"
    });
    // We can safely replace the escaped base now, since the `base` section is
    // now in a normalized escaped value.
    ast.walkClasses((node)=>{
        if (node.value !== base) {
            return;
        }
        let parent = node.parent;
        let formatNodes = formatAst.nodes[0].nodes;
        // Perf optimization: if the parent is a single class we can just replace it and be done
        if (parent.nodes.length === 1) {
            node.replaceWith(...formatNodes);
            return;
        }
        let simpleSelector = simpleSelectorForNode(node);
        parent.insertBefore(simpleSelector[0], simpleStart);
        parent.insertAfter(simpleSelector[simpleSelector.length - 1], simpleEnd);
        for (let child of formatNodes){
            parent.insertBefore(simpleSelector[0], child);
        }
        node.remove();
        // Re-sort the simple selector to ensure it's in the correct order
        simpleSelector = simpleSelectorForNode(simpleStart);
        let firstNode = parent.index(simpleStart);
        parent.nodes.splice(firstNode, simpleSelector.length, ...resortSelector(_postcssSelectorParser.default.selector({
            nodes: simpleSelector
        })).nodes);
        simpleStart.remove();
        simpleEnd.remove();
    });
    // This will make sure to move pseudo's to the correct spot (the end for
    // pseudo elements) because otherwise the selector will never work
    // anyway.
    //
    // E.g.:
    //  - `before:hover:text-center` would result in `.before\:hover\:text-center:hover::before`
    //  - `hover:before:text-center` would result in `.hover\:before\:text-center:hover::before`
    //
    // `::before:hover` doesn't work, which means that we can make it work for you by flipping the order.
    function collectPseudoElements(selector) {
        let nodes = [];
        for (let node of selector.nodes){
            if (isPseudoElement(node)) {
                nodes.push(node);
                selector.removeChild(node);
            }
            if (node === null || node === void 0 ? void 0 : node.nodes) {
                nodes.push(...collectPseudoElements(node));
            }
        }
        return nodes;
    }
    // Remove unnecessary pseudo selectors that we used as placeholders
    ast.each((selector)=>{
        selector.walkPseudos((p)=>{
            if (selectorFunctions.has(p.value)) {
                p.replaceWith(p.nodes);
            }
        });
        let pseudoElements = collectPseudoElements(selector);
        if (pseudoElements.length > 0) {
            selector.nodes.push(pseudoElements.sort(sortSelector));
        }
    });
    return ast.toString();
}
// Note: As a rule, double colons (::) should be used instead of a single colon
// (:). This distinguishes pseudo-classes from pseudo-elements. However, since
// this distinction was not present in older versions of the W3C spec, most
// browsers support both syntaxes for the original pseudo-elements.
let pseudoElementsBC = [
    ":before",
    ":after",
    ":first-line",
    ":first-letter"
];
// These pseudo-elements _can_ be combined with other pseudo selectors AND the order does matter.
let pseudoElementExceptions = [
    "::file-selector-button"
];
// This will make sure to move pseudo's to the correct spot (the end for
// pseudo elements) because otherwise the selector will never work
// anyway.
//
// E.g.:
//  - `before:hover:text-center` would result in `.before\:hover\:text-center:hover::before`
//  - `hover:before:text-center` would result in `.hover\:before\:text-center:hover::before`
//
// `::before:hover` doesn't work, which means that we can make it work
// for you by flipping the order.
function sortSelector(a, z) {
    // Both nodes are non-pseudo's so we can safely ignore them and keep
    // them in the same order.
    if (a.type !== "pseudo" && z.type !== "pseudo") {
        return 0;
    }
    // If one of them is a combinator, we need to keep it in the same order
    // because that means it will start a new "section" in the selector.
    if (a.type === "combinator" ^ z.type === "combinator") {
        return 0;
    }
    // One of the items is a pseudo and the other one isn't. Let's move
    // the pseudo to the right.
    if (a.type === "pseudo" ^ z.type === "pseudo") {
        return (a.type === "pseudo") - (z.type === "pseudo");
    }
    // Both are pseudo's, move the pseudo elements (except for
    // ::file-selector-button) to the right.
    return isPseudoElement(a) - isPseudoElement(z);
}
function isPseudoElement(node) {
    if (node.type !== "pseudo") return false;
    if (pseudoElementExceptions.includes(node.value)) return false;
    return node.value.startsWith("::") || pseudoElementsBC.includes(node.value);
}
function resolveFunctionArgument(haystack, needle, arg) {
    let startIdx = haystack.indexOf(arg ? `${needle}(${arg})` : needle);
    if (startIdx === -1) return null;
    // Start inside the `(`
    startIdx += needle.length + 1;
    let target = "";
    let count = 0;
    for (let char of haystack.slice(startIdx)){
        if (char !== "(" && char !== ")") {
            target += char;
        } else if (char === "(") {
            target += char;
            count++;
        } else if (char === ")") {
            if (--count < 0) break; // unbalanced
            target += char;
        }
    }
    return target;
}