The rewrite engine is an absolutely brilliant invention by John Brant and Don Roberts, introduced with the Refactoring Browser (see “A Refactoring Tool for Smalltalk”, 1997). It gives us AST-level matching and rewriting with astonishing power.
if (n <= 1) return;，推荐阅读同城约会获取更多信息
Copyright © 1997-2026 by www.people.com.cn all rights reserved，推荐阅读Line官方版本下载获取更多信息
The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.
while (len = 4) {