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Debug scripts

The script is the optional program, written in JavaScript like language, with which you can customize the document analysis pipeline.

To debug the script you need to:

  1. Set at least one breakpoint.
  2. Enable and use the debugger.

Breakpoints

IntelliJ IDEA, the platform on which Studio is based, offers advanced breakpoint management.
For example, it is possible to set breakpoints that record a message or write the stack trace to a log file.
It is also possible to have breakpoints that self-cancel once encountered. Please refer to the IntelliJ IDEA documentation if you are interested in breakpoint management options.
The most common operations on breakpoints are described below.

Set breakpoints

To set a breakpoint:

  1. Open the script file.
  2. Find the line containing the statement before which you want the execution to stop.
  3. Click the gutter at the line.

    Info

    If the gutter shows row numbers, click to the right of the row number.

Toggle breakpoints

Single breakpoint

In the editor, right-click the breakpoint icon and check or uncheck Enabled.

In the Console tool window:

  1. Select the Breakpoints tab.
  2. Find the breakpoint and check or uncheck it.

All breakpoints

To disable all breakpoints:

  1. In the Console tool window, select the Breakpoints tab.
  2. Choose Disable all Breakpoints on the toolbar.

To enable all breakpoints:

  1. In the Console tool window, select the Breakpoints tab.
  2. Choose Enable all Breakpoints on the toolbar.

Delete breakpoints

Single breakpoint

In the editor, click the breakpoint icon in the gutter.

In the Console tool window:

  1. Select the Breakpoints tab
  2. Select the breakpoint.

    Warning

    Select the part of the breakpoint line containing the script name and the statement line number, not the left checkbox, that is used to disable and re-enable the breakpoint.

  3. Select Delete Selected Breakpoints on the toolbar.

Multiple breakpoints

  1. In the Console tool window, select the Breakpoints tab.
  2. Select the breakpoints to be deleted. Multiple selection is possible.

    Warning

    Select the part of the breakpoint line containing the script name and the statement line number, not the left checkbox, that is used to disable and re-enable the breakpoint.

  3. Select Delete Selected Breakpoints on the toolbar.

Find breakpoints in the source code

  1. Open the Bookmarks tool window.
  2. Expand Breakpoints then expand Script Line Breakpoints.
  3. Double-click a breakpoint.

    Or:

    Press F4.

Or:

  1. On the toolbar, select Show Options Menu > Navigate with Single Click.
  2. Select the breakpoint.

Debugger

Note

During a debug session, debugger commands are available both in the main toolbar and in the Debugger tab of the Console tool window.

Enable the debugger

  • Select Studio > Enable Script Debugger on the main menu.

Or:

  • Select Enable Script Debugger on the main toolbar.

Or:

  1. Open the Console tool window.
  2. Select the Debugger tab.
  3. Select Enable Script Debugger on the toolbar.

Disable the debugger

  • Select Studio > Disable Script Debugger on the main menu.

Or:

  • Select Disable Script Debugger on the main toolbar.

Or:

  1. Open the Console tool window.
  2. Select the Debugger tab.
  3. Select Disable Script Debugger on the toolbar.

Start debugging

Document preparation and analysis operations runs the script on each file they process.
Run the command you need and, if the debugger is enabled and at least one breakpoint is set and enabled, the execution of the script will stop before the execution of the statement on which the first breakpoint is defined.
The editor will show the script file with the breakpoint line highlighted.

Resume execution up to the next breakpoint

To resume the execution of the script up to the next breakpoint, or to the end if no other breakpoint is encountered, select Resume .

Resume execution ignoring all breakpoints

To resume the execution of the script to the end, ignoring breakpoints, select Resume ignoring all breakpoints .

Pause execution

To pause the execution select Pause .

Note

When pausing execution, it is not possible to know in advance the statement before which the execution will stop.

Terminate execution

To terminate the execution of the script so that subsequent statements are not executed, select Stop .

Step over

To execute the current statement without stepping into functions select Step Over .

Step into

To execute the current statement stepping into functions select Step Into .

Step out

To execute all the remaining function statements, stopping on the first statement of the caller immediately after the function call select Step Out .

Show the next statement

To show the next script statement in the editor select Show Execution Point .

Inspect the value of variables

The local variables are shown in the Variables panel of the Debugger tab.

To expand or collapse structured items like objects or arrays, use the expand/collapse toggle button to the left of the item.

To copy the value of a variable or variable member to the clipboard, right-click the item and select Copy Value.

Watches

Watches are variables or expressions you choose to monitor during debugging.
Use the Watches sub-panel of the Debugger panel inside the Console tool window to observe and manage watches.

Create a watch

To create a watch for a variable, in the Variables panel, right-click the variable and select Add to watches.

To create a watch for an expression:

  1. In the Watches panel select Create on the toolbar.
  2. Enter the expression and press Enter.

Edit a watch

To edit a watch, in the Watches panel:

  1. Double-click the watch to edit.
  2. Change the expression and press Enter.

Or:

  1. Select the watch to edit.
  2. Select Edit on the panel toolbar.
  3. Change the expression and press Enter.

Copy the value of a watch to the clipboard

To copy the value of a watch to the clipboard, right-click the watch and select Copy Value.

Delete watches

To delete a single watch, select the watch, then select Delete on the panel toolbar.

To delete all watches, select Delete all on the panel toolbar.

View the call stack

To view the call stack:

  1. Open the Console tool window.
  2. Select the Debugger tab. The call stack is shown in the Callstack panel and it's automatically updated .