Phalcon
Phalcon is a web framework implemented as a C extension , every Phalcon's fan know that. It mean we cannot view source code of framework like another PHP framework.
File structure
.
└── tutorial
    ├── app
    │   ├── controllers
    │   │   ├── IndexController.php
    │   │   └── SignupController.php
    │   ├── models
    │   │   └── Users.php
    │   └── views
    └── public
        ├── css
        ├── img
        ├── index.php
        └── jsPhalcon Developer Tools
These tools are a collection of useful scripts to generate skeleton code. Core components of your application can be generated with a simple command, allowing you to easily develop applications using Phalcon.
Tutorial - basic
Auto complete for Phalcon framework in Eclipse
Thank for Phalcon Developer tool. It provide useful interface & class declaration scripts which support IDE auto complete function.
Assuming that, Phalcon developer tools is installed. If no, you can download or clone a cross platform package containing the developer tools from Github.
GitHub link : https://github.com/phalcon/phalcon-devtools
In Eclipse, you just need to add devtool path : phalcon-devtools/ide/PHALCON_VERSION by adding external Source Folder in PHP include Path / Libraries tab.