The documentation analysis report generation is split into two processes:

1. Collect data and save it

2. Generate different reports from saved data

This was chosen because the data collection step takes a long time (~ 1 minute), but it's needed for every single report. So if you want to generate the simple doc coverage, and the extended one, you need the same base data - you just display it in a different way.

generateCoverage() in QA_Peardoc_Coverage generates and returns the array with the computed coverage data. It can be serialized and saved, since all the Renderer classes use it as input.

Classes implementing the QA_Peardoc_Coverage_Renderer interface provide a render() method that takes the data returned by generateCoverage() and return the analysis, most times a string containing HTML code.