Extension ID

com.castsoftware.reactjs

What's new?

Please see ReactJS - 1.2 - Release Notes for more information.

Description

This extension provides support for the ReactJS and React Native framework. 

In what situation should you install this extension?

If your Web application contains ReactJS or React Native source code and you want to view these object types and their links with other objects, then you should install this extension:

• creates HTML fragments, ReactJS applications, ReactJS components and ReactJS Forms.
• creates links between these objects.

ReactJS Application

This declaration will create a ReactJS application named App:

ReactDOM.render(
  <AppContainer>
    <Provider store={store}>
      <App version={appVersion} />
    </Provider>
  </AppContainer>,
  appElement
);

ReactJS Component

This declaration will create a ReactJS component named Sequence because the class inherits from Component or PureComponent. A component corresponds to a class which contains a render method. The render method is automatically called when the component is refered to in an HTML fragment:

import React, { Component } from 'react';
 
 class Sequence extends Component {
 
  shouldComponentUpdate(nextProps) {
    return this.props.positionFrom !== nextProps.positionFrom ||
      this.props.sequence !== nextProps.sequence ||
      this.props.nucleotidesPerRow !== nextProps.nucleotidesPerRow ||
      this.props.rowHeight !== nextProps.rowHeight;
  }
 
  render() {
    return (
      <g>
        {this.props.sequence.map((nucleotide, index) =>
          <Nucleotide
            type={nucleotide}
            position={this.props.positionFrom + index}
            key={index}
            index={index}
            onClick={this.props.onNucleotideClick}
            {...this.props}
          />,
        )}
      </g>
    );
  }
}

ReactJS Form

This declaration will create a ReactJS form named contact:

import React from 'react'
import { Field, reduxForm } from 'redux-form'

let ContactForm = props => {
  const { handleSubmit } = props
  return (
    <form onSubmit={handleSubmit}>
      <div>
        <label htmlFor="firstName">First Name</label>
        <Field name="firstName" component="input" type="text" />
      </div>
      <div>
        <label htmlFor="lastName">Last Name</label>
        <Field name="lastName" component="input" type="text" />
      </div>
      <div>
        <label htmlFor="email">Email</label>
        <Field name="email" component="input" type="email" />
      </div>
      <button type="submit">Submit</button>
    </form>
  )
}

ContactForm = reduxForm({
  // a unique name for the form
  form: 'contact'
})(ContactForm)

export default ContactFormrender() {
  return (
    <g>
      {this.props.sequence.map((nucleotide, index) =>
        <Nucleotide
          type={nucleotide}
          position={this.props.positionFrom + index}
          key={index}
          index={index}
          onClick={this.props.onNucleotideClick}
          {...this.props}
        />,
      )}
    </g>
  );
}

HTML fragment

This declaration will create a HTML fragment named render_fragment_1 starting with "<g>" and ending with "</g>". There can be several fragments in any function/method:

render() {
  return (
    <g>
      {this.props.sequence.map((nucleotide, index) =>
        <Nucleotide
          type={nucleotide}
          position={this.props.positionFrom + index}
          key={index}
          index={index}
          onClick={this.props.onNucleotideClick}
          {...this.props}
        />,
      )}
    </g>
  );
}

Supported versions

The following table displays the list of ReactJS versions that this extension supports:

Version	Supported
15.x
16.x
17.x

Files analyzed

Function Point, Quality and Sizing support

This extension provides the following support:

• Function Points (transactions): a green tick indicates that OMG Function Point counting and Transaction Risk Index are supported
• Quality and Sizing: a green tick indicates that CAST can measure size and that a minimum set of Quality Rules exist

Function Points (transactions)	Quality and Sizing

AIP Core compatibility

This extension is compatible with:

AIP Core release	Supported
8.3.x

Supported DBMS servers

DBMS	Supported?
CSS / PostgreSQL

Prerequisites

An installation of any compatible release of AIP Core (see table above)

Dependencies with other extensions

Some CAST extensions require the presence of other CAST extensions in order to function correctly. The ReactJS extension requires that the following other CAST extensions are also installed:

• HTML5/JavaScript
• Web Services Linker

Download and installation instructions

The extension will be automatically downloaded and installed in AIP Console when you deliver React code. You can also manually install the extension using the Application - Extensions interface. When installed, follow the instructions below to run a new analysis/snapshot to generate new results:

• Advanced onboarding - run and validate the initial analysis
• Advanced onboarding - snapshot generation and validation

Packaging, delivering and analyzing your source code

Once the extension is downloaded and installed, you can now package your source code and run an analysis. The process of packaging, delivering and analyzing your source code is described below:

What results can you expect?

Once the analysis/snapshot generation has completed, you can view the results in the normal manner:

Objects

The following objects are identified:

Links

Links from the ReactJS application

• A relyon link is created from the application to the HTML fragment of the application.
• A call link is created from the fragment to the ReactJS component refered to in the fragment
• A call link is created from the component to the render method of the class representing the component (as render method is automatically called).
• A call link is created from the render method to the fragment contained inside the render method

Please remember that components are called mainly from html fragments, and render methods are implicitly called from ReactJS components.

Click to enlarge:

Links from a HTML fragment

Many links are created from fragments, for example:

Click to enlarge:

HTML tags present in HTML fragments are linked to ReactJS components if they exist, or else a JavaScript function:

Click to enlarge:

HTML atribute values present in HTML fragments are linked to methods when they are represented between { ... }:

Click to enlarge:

When you have purely javascript code inside an html fragment, the javascript code is analyzed and you have links as you would have in conventional javascript code. You may also have javascript functions inside html fragments, in this case, functions are children of the html fragment.

Structural Rules

The following structural rules are provided:

Known Limitations

• React Without JSX is not supported.