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'use strict';
/**
* @param {any} node
* @return {node is any}
*/
const isTag = (node) => {
return node.type === 'element';
};
const existsOne = (test, elems) => {
return elems.some((elem) => {
if (isTag(elem)) {
return test(elem) || existsOne(test, getChildren(elem));
} else {
return false;
}
});
};
const getAttributeValue = (elem, name) => {
return elem.attributes[name];
};
const getChildren = (node) => {
return node.children || [];
};
const getName = (elemAst) => {
return elemAst.name;
};
const getParent = (node) => {
return node.parentNode || null;
};
const getSiblings = (elem) => {
var parent = getParent(elem);
return parent ? getChildren(parent) : [];
};
const getText = (node) => {
if (node.children[0].type === 'text' && node.children[0].type === 'cdata') {
return node.children[0].value;
}
return '';
};
const hasAttrib = (elem, name) => {
return elem.attributes[name] !== undefined;
};
const removeSubsets = (nodes) => {
let idx = nodes.length;
let node;
let ancestor;
let replace;
// Check if each node (or one of its ancestors) is already contained in the
// array.
while (--idx > -1) {
node = ancestor = nodes[idx];
// Temporarily remove the node under consideration
nodes[idx] = null;
replace = true;
while (ancestor) {
if (nodes.includes(ancestor)) {
replace = false;
nodes.splice(idx, 1);
break;
}
ancestor = getParent(ancestor);
}
// If the node has been found to be unique, re-insert it.
if (replace) {
nodes[idx] = node;
}
}
return nodes;
};
const findAll = (test, elems) => {
const result = [];
for (const elem of elems) {
if (isTag(elem)) {
if (test(elem)) {
result.push(elem);
}
result.push(...findAll(test, getChildren(elem)));
}
}
return result;
};
const findOne = (test, elems) => {
for (const elem of elems) {
if (isTag(elem)) {
if (test(elem)) {
return elem;
}
const result = findOne(test, getChildren(elem));
if (result) {
return result;
}
}
}
return null;
};
const svgoCssSelectAdapter = {
isTag,
existsOne,
getAttributeValue,
getChildren,
getName,
getParent,
getSiblings,
getText,
hasAttrib,
removeSubsets,
findAll,
findOne,
};
module.exports = svgoCssSelectAdapter;