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short circuit unnecessary visits

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This commit is contained in:
Sebastian McKenzie 2015-05-10 20:00:26 +01:00
parent 3c81899ca7
commit 4ceb1d6f5e
1 changed files with 11 additions and 7 deletions
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18
src/babel/traversal/context.js
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@ -10,6 +10,10 @@ export default class TraversalContext {
this.opts = opts;
}
shouldVisit(node) {
return !!(this.opts.enter || this.opts[node.type] || t.VISITOR_KEYS[node.type]);
}
create(node, obj, key) {
return TraversalPath.get(this.parentPath, this, node, obj, key);
}
@ -25,7 +29,10 @@ export default class TraversalContext {
// build up initial queue
for (let i = 0; i < nodes.length; i++) {
if (nodes[i]) queue.push(this.create(node, nodes, i));
var node = nodes[i];
if (node && this.shouldVisit(node)) {
queue.push(this.create(node, nodes, i));
}
}
// visit the queue
@ -42,16 +49,13 @@ export default class TraversalContext {
}
}
// clear context from queued paths
for (let i = 0; i < queue.length; i++) {
//queue[i].clearContext();
}
return stop;
}
visitSingle(node, key) {
return this.create(node, node, key).visit();
if (this.shouldVisit(node[key])) {
return this.create(node, node, key).visit();
}
}
visit(node, key) {