@phenomnomnominal/tsquery
Version:
Query TypeScript ASTs with the esquery API!
68 lines • 2.6 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getVisitorKeys = exports.adjacent = exports.sibling = void 0;
const traverse_1 = require("../traverse");
function sibling(node, selector, ancestors) {
return !!(((0, traverse_1.findMatches)(node, selector.right, ancestors) &&
findSibling(node, ancestors, siblingLeft)) ||
(selector.left.subject &&
(0, traverse_1.findMatches)(node, selector.left, ancestors) &&
findSibling(node, ancestors, siblingRight)));
function siblingLeft(prop, index) {
return prop
.slice(0, index)
.some((precedingSibling) => (0, traverse_1.findMatches)(precedingSibling, selector.left, ancestors));
}
function siblingRight(prop, index) {
return prop
.slice(index, prop.length)
.some((followingSibling) => (0, traverse_1.findMatches)(followingSibling, selector.right, ancestors));
}
}
exports.sibling = sibling;
function adjacent(node, selector, ancestors) {
return !!(((0, traverse_1.findMatches)(node, selector.right, ancestors) &&
findSibling(node, ancestors, adjacentLeft)) ||
(selector.right.subject &&
(0, traverse_1.findMatches)(node, selector.left, ancestors) &&
findSibling(node, ancestors, adjacentRight)));
function adjacentLeft(prop, index) {
return index > 0 && (0, traverse_1.findMatches)(prop[index - 1], selector.left, ancestors);
}
function adjacentRight(prop, index) {
return (index < prop.length - 1 &&
(0, traverse_1.findMatches)(prop[index + 1], selector.right, ancestors));
}
}
exports.adjacent = adjacent;
function findSibling(node, ancestors, test) {
const [parent] = ancestors;
if (!parent) {
return false;
}
const keys = getVisitorKeys(node.parent || null);
return keys.some((key) => {
const prop = node.parent[key];
if (Array.isArray(prop)) {
const index = prop.indexOf(node);
if (index === -1) {
return false;
}
return test(prop, index);
}
return false;
});
}
const FILTERED_KEYS = ['parent'];
function getVisitorKeys(node) {
return node
? Object.keys(node)
.filter((key) => !FILTERED_KEYS.includes(key))
.filter((key) => {
const value = node[key];
return Array.isArray(value) || typeof value === 'object';
})
: [];
}
exports.getVisitorKeys = getVisitorKeys;
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