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import boolbase from "boolbase";
import { isTraversal } from "../sort.js";
/** Used as a placeholder for :has. Will be replaced with the actual element. */
export const PLACEHOLDER_ELEMENT = {};
export function ensureIsTag(next, adapter) {
if (next === boolbase.falseFunc)
return boolbase.falseFunc;
return (elem) => adapter.isTag(elem) && next(elem);
}
export function getNextSiblings(elem, adapter) {
const siblings = adapter.getSiblings(elem);
if (siblings.length <= 1)
return [];
const elemIndex = siblings.indexOf(elem);
if (elemIndex < 0 || elemIndex === siblings.length - 1)
return [];
return siblings.slice(elemIndex + 1).filter(adapter.isTag);
}
function copyOptions(options) {
// Not copied: context, rootFunc
return {
xmlMode: !!options.xmlMode,
lowerCaseAttributeNames: !!options.lowerCaseAttributeNames,
lowerCaseTags: !!options.lowerCaseTags,
quirksMode: !!options.quirksMode,
cacheResults: !!options.cacheResults,
pseudos: options.pseudos,
adapter: options.adapter,
equals: options.equals,
};
}
const is = (next, token, options, context, compileToken) => {
const func = compileToken(token, copyOptions(options), context);
return func === boolbase.trueFunc
? next
: func === boolbase.falseFunc
? boolbase.falseFunc
: (elem) => func(elem) && next(elem);
};
/*
* :not, :has, :is, :matches and :where have to compile selectors
* doing this in src/pseudos.ts would lead to circular dependencies,
* so we add them here
*/
export const subselects = {
is,
/**
* `:matches` and `:where` are aliases for `:is`.
*/
matches: is,
where: is,
not(next, token, options, context, compileToken) {
const func = compileToken(token, copyOptions(options), context);
return func === boolbase.falseFunc
? next
: func === boolbase.trueFunc
? boolbase.falseFunc
: (elem) => !func(elem) && next(elem);
},
has(next, subselect, options, _context, compileToken) {
const { adapter } = options;
const opts = copyOptions(options);
opts.relativeSelector = true;
const context = subselect.some((s) => s.some(isTraversal))
? // Used as a placeholder. Will be replaced with the actual element.
[PLACEHOLDER_ELEMENT]
: undefined;
const compiled = compileToken(subselect, opts, context);
if (compiled === boolbase.falseFunc)
return boolbase.falseFunc;
const hasElement = ensureIsTag(compiled, adapter);
// If `compiled` is `trueFunc`, we can skip this.
if (context && compiled !== boolbase.trueFunc) {
/*
* `shouldTestNextSiblings` will only be true if the query starts with
* a traversal (sibling or adjacent). That means we will always have a context.
*/
const { shouldTestNextSiblings = false } = compiled;
return (elem) => {
if (!next(elem))
return false;
context[0] = elem;
const childs = adapter.getChildren(elem);
const nextElements = shouldTestNextSiblings
? [...childs, ...getNextSiblings(elem, adapter)]
: childs;
return adapter.existsOne(hasElement, nextElements);
};
}
return (elem) => next(elem) &&
adapter.existsOne(hasElement, adapter.getChildren(elem));
},
};
//# sourceMappingURL=subselects.js.map