Generator Debugger is a tool that helps the development of generators by providing means to follow, control and inspect the execution of a generator. An example of Generator Editor window is shown in Figure 5–5.

On top of the Generator Debugger window (as shown in Figure 5–5) you will find the usual menu bar and toolbar. Below them is the working area that is divided as follows:

The Generator stack at the top-left corner of the working area provides a list of the generators currently in the execution stack, the generator in execution being shown at the bottom of the list. The Generator view contains the currently executed generation definition. The part of the definition that is being processed is shown highlighted (please note that it is not possible to edit the generator definition here). The Element stack on the right of Generator window displays the stack of design elements that are being accessed by the generator, the currently accessed one being on the bottom of the list. The accumulation of this stack is the result of the generator’s navigation structure.

The Output stack on the lower-left corner of the window shows the target output streams like screen, files, etc., used by the generator. The current output is the last one in the list. The Output view in the middle of the lower part of the window displays the generated output for the current or the selected output. The Variables list on the lower-right corner of the window shows the currently allocated variables with their values.

Pop-up menu commands and/or double-clicking in the Generator Stack, Element Stack or Output panes will take you to the selected element or provide other operations on it.