| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | exports.verifyPseudoArgs = exports.pseudos = void 0;
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| 4 | // While filters are precompiled, pseudos get called when they are needed
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| 5 | exports.pseudos = {
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| 6 | empty: function (elem, _a) {
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| 7 | var adapter = _a.adapter;
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| 8 | return !adapter.getChildren(elem).some(function (elem) {
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| 9 | // FIXME: `getText` call is potentially expensive.
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| 10 | return adapter.isTag(elem) || adapter.getText(elem) !== "";
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| 11 | });
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| 12 | },
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| 13 | "first-child": function (elem, _a) {
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| 14 | var adapter = _a.adapter, equals = _a.equals;
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| 15 | var firstChild = adapter
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| 16 | .getSiblings(elem)
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| 17 | .find(function (elem) { return adapter.isTag(elem); });
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| 18 | return firstChild != null && equals(elem, firstChild);
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| 19 | },
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| 20 | "last-child": function (elem, _a) {
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| 21 | var adapter = _a.adapter, equals = _a.equals;
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| 22 | var siblings = adapter.getSiblings(elem);
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| 23 | for (var i = siblings.length - 1; i >= 0; i--) {
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| 24 | if (equals(elem, siblings[i]))
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| 25 | return true;
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| 26 | if (adapter.isTag(siblings[i]))
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| 27 | break;
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| 28 | }
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| 29 | return false;
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| 30 | },
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| 31 | "first-of-type": function (elem, _a) {
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| 32 | var adapter = _a.adapter, equals = _a.equals;
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| 33 | var siblings = adapter.getSiblings(elem);
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| 34 | var elemName = adapter.getName(elem);
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| 35 | for (var i = 0; i < siblings.length; i++) {
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| 36 | var currentSibling = siblings[i];
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| 37 | if (equals(elem, currentSibling))
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| 38 | return true;
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| 39 | if (adapter.isTag(currentSibling) &&
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| 40 | adapter.getName(currentSibling) === elemName) {
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| 41 | break;
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| 42 | }
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| 43 | }
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| 44 | return false;
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| 45 | },
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| 46 | "last-of-type": function (elem, _a) {
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| 47 | var adapter = _a.adapter, equals = _a.equals;
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| 48 | var siblings = adapter.getSiblings(elem);
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| 49 | var elemName = adapter.getName(elem);
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| 50 | for (var i = siblings.length - 1; i >= 0; i--) {
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| 51 | var currentSibling = siblings[i];
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| 52 | if (equals(elem, currentSibling))
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| 53 | return true;
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| 54 | if (adapter.isTag(currentSibling) &&
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| 55 | adapter.getName(currentSibling) === elemName) {
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| 56 | break;
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| 57 | }
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| 58 | }
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| 59 | return false;
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| 60 | },
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| 61 | "only-of-type": function (elem, _a) {
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| 62 | var adapter = _a.adapter, equals = _a.equals;
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| 63 | var elemName = adapter.getName(elem);
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| 64 | return adapter
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| 65 | .getSiblings(elem)
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| 66 | .every(function (sibling) {
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| 67 | return equals(elem, sibling) ||
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| 68 | !adapter.isTag(sibling) ||
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| 69 | adapter.getName(sibling) !== elemName;
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| 70 | });
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| 71 | },
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| 72 | "only-child": function (elem, _a) {
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| 73 | var adapter = _a.adapter, equals = _a.equals;
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| 74 | return adapter
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| 75 | .getSiblings(elem)
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| 76 | .every(function (sibling) { return equals(elem, sibling) || !adapter.isTag(sibling); });
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| 77 | },
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| 78 | };
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| 79 | function verifyPseudoArgs(func, name, subselect) {
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| 80 | if (subselect === null) {
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| 81 | if (func.length > 2) {
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| 82 | throw new Error("pseudo-selector :" + name + " requires an argument");
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| 83 | }
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| 84 | }
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| 85 | else if (func.length === 2) {
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| 86 | throw new Error("pseudo-selector :" + name + " doesn't have any arguments");
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| 87 | }
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| 88 | }
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| 89 | exports.verifyPseudoArgs = verifyPseudoArgs;
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