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https://github.com/valitydev/wazuh-kibana-app.git
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87 lines
3.0 KiB
Markdown
87 lines
3.0 KiB
Markdown
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### Esrecurse [](http://travis-ci.org/estools/esrecurse)
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Esrecurse ([esrecurse](http://github.com/estools/esrecurse)) is
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[ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm)
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recursive traversing functionality.
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### Example Usage
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The following code will output all variables declared at the root of a file.
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```javascript
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esrecurse.visit(ast, {
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XXXStatement: function (node) {
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this.visit(node.left);
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// do something...
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this.visit(node.right);
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}
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});
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```
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We can use `Visitor` instance.
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```javascript
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var visitor = new esrecurse.Visitor({
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XXXStatement: function (node) {
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this.visit(node.left);
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// do something...
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this.visit(node.right);
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}
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});
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visitor.visit(ast);
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```
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We can inherit `Visitor` instance easily.
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```javascript
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function DerivedVisitor() {
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esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */);
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}
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util.inherits(DerivedVisitor, esrecurse.Visitor);
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DerivedVisitor.prototype.XXXStatement = function (node) {
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this.visit(node.left);
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// do something...
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this.visit(node.right);
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};
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```
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And you can invoke default visiting operation inside custom visit operation.
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```javascript
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function DerivedVisitor() {
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esrecurse.Visitor.call(/* this for constructor */ this /* visitor object automatically becomes this. */);
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}
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util.inherits(DerivedVisitor, esrecurse.Visitor);
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DerivedVisitor.prototype.XXXStatement = function (node) {
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// do something...
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this.visitChildren(node);
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};
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```
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### License
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Copyright (C) 2014 [Yusuke Suzuki](http://github.com/Constellation)
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(twitter: [@Constellation](http://twitter.com/Constellation)) and other contributors.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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