iframe-proxy | Sunbelt Computer Software

26 lines (19 loc) · 719 Bytes

const { getParser, initGrammars, loadAllGrammars } = require('./dist/extraction/grammars');

(async () => {

await initGrammars();

await loadAllGrammars();

const parser = getParser('python');

const code = `class Child(Parent):

pass`;

const tree = parser.parse(code);

function walk(node, depth = 0) {

const indent = ' '.repeat(depth);

const preview = node.text.substring(0, 30).replace(/\n/g, '\\n');

console.log(`${indent}${node.type} [${node.startPosition.row}:${node.startPosition.column}] "${preview}"`);

for (let i = 0; i < node.namedChildCount; i++) {

const child = node.namedChild(i);

if (child) walk(child, depth + 1);

}

walk(tree.rootNode);

})();

Sunbelt Computer Software