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Diffstat (limited to 'docs/hooks.rst')
| -rw-r--r-- | docs/hooks.rst | 51 |
1 files changed, 15 insertions, 36 deletions
diff --git a/docs/hooks.rst b/docs/hooks.rst index 2a5d7b5f..1696d365 100644 --- a/docs/hooks.rst +++ b/docs/hooks.rst @@ -76,24 +76,21 @@ Command Processing Loop When you call `.cmdloop()`, the following sequence of events are repeated until the application exits: -1. Output the prompt -2. Accept user input -3. Call `preparse()` - for backwards compatibility with prior releases of cmd2, now deprecated -4. Parse user input into `Statement` object -5. Call methods registered with `register_postparsing_hook()` -6. Call `postparsing_precmd()` - for backwards compatibility with prior releases of cmd2, now deprecated -7. Redirect output, if user asked for it and it's allowed -8. Start timer -9. Call methods registered with `register_precmd_hook()` -10. Call `precmd()` - for backwards compatibility with ``cmd.Cmd`` -11. Add statement to history -12. Call `do_command` method -13. Call methods registered with `register_postcmd_hook()` -14. Call `postcmd(stop, statement)` - for backwards compatibility with ``cmd.Cmd`` -15. Stop timer and display the elapsed time -16. Stop redirecting output if it was redirected -17. Call methods registered with `register_cmdfinalization_hook()` -18. Call `postparsing_postcmd()` - for backwards compatibility - deprecated +#. Output the prompt +#. Accept user input +#. Parse user input into `Statement` object +#. Call methods registered with `register_postparsing_hook()` +#. Redirect output, if user asked for it and it's allowed +#. Start timer +#. Call methods registered with `register_precmd_hook()` +#. Call `precmd()` - for backwards compatibility with ``cmd.Cmd`` +#. Add statement to history +#. Call `do_command` method +#. Call methods registered with `register_postcmd_hook()` +#. Call `postcmd(stop, statement)` - for backwards compatibility with ``cmd.Cmd`` +#. Stop timer and display the elapsed time +#. Stop redirecting output if it was redirected +#. Call methods registered with `register_cmdfinalization_hook()` By registering hook methods, steps 4, 8, 12, and 16 allow you to run code during, and control the flow of the command processing loop. Be aware that @@ -305,21 +302,3 @@ If any command finalization hook raises an exception, no more command finalization hooks will be called. If the last hook to return a value returned ``True``, then the exception will be rendered, and the application will terminate. - -Deprecated Command Processing Hooks ------------------------------------ - -Inside the main loop, every time the user hits <Enter> the line is processed by the ``onecmd_plus_hooks`` method. - -.. automethod:: cmd2.cmd2.Cmd.onecmd_plus_hooks - -As the ``onecmd_plus_hooks`` name implies, there are a number of *hook* methods that can be defined in order to inject -application-specific behavior at various points during the processing of a line of text entered by the user. ``cmd2`` -increases the 2 hooks provided by ``cmd`` (**precmd** and **postcmd**) to 6 for greater flexibility. Here are -the various hook methods, presented in chronological order starting with the ones called earliest in the process. - -.. automethod:: cmd2.cmd2.Cmd.preparse - -.. automethod:: cmd2.cmd2.Cmd.postparsing_precmd - -.. automethod:: cmd2.cmd2.Cmd.postparsing_postcmd |