traceur/src/codegeneration/scopeContainsThis.js

ES6 to ES5 compiler

// Copyright 2014 Traceur Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import {FindInFunctionScope} from './FindInFunctionScope.js'

class FindThis extends FindInFunctionScope {
  visitThisExpression(tree) {
    this.found = true;
  }
}

function scopeContainsThis(tree) {
  let visitor = new FindThis();
  visitor.visitAny(tree);
  return visitor.found;
}

export default scopeContainsThis;