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Problem: Need a new release Solution: Release Vim 9.1 Signed-off-by: Christian Brabandt <cb@256bit.org>
135 lines
5.3 KiB
Plaintext
135 lines
5.3 KiB
Plaintext
*debugger.txt* For Vim version 9.1. Last change: 2019 Dec 21
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VIM REFERENCE MANUAL by Gordon Prieur
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Debugger Support Features *debugger-support*
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These features are for integration with a debugger or an Integrated
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Programming Environment (IPE) or Integrated Development Environment (IDE).
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For the debugger running in a Vim terminal window see |terminal-debugger|.
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1. Debugger Features |debugger-features|
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2. Vim Compile Options |debugger-compilation|
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==============================================================================
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1. Debugger Features *debugger-features*
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The following features are available:
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Alternate Command Input |alt-input|
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Debug Signs |debug-signs|
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Debug Source Highlight |debug-highlight|
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Message Footer |gui-footer|
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Balloon Evaluation |balloon-eval|
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These features were added specifically for use in the Motif version of gvim.
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However, the |alt-input| and |debug-highlight| were written to be usable in
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both vim and gvim. Some of the other features could be used in the non-GUI
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vim with slight modifications. However, I did not do this nor did I test the
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reliability of building for vim or non Motif GUI versions.
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1.1 Alternate Command Input *alt-input*
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For Vim to work with a debugger there must be at least an input connection
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with a debugger or external tool. In many cases there will also be an output
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connection but this isn't absolutely necessary.
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The purpose of the input connection is to let the external debugger send
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commands to Vim. The commands sent by the debugger should give the debugger
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enough control to display the current debug environment and state.
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The current implementation is based on the X Toolkit dispatch loop and the
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XtAddInput() function call.
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1.2 Debug Signs *debug-signs*
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Many debuggers mark specific lines by placing a small sign or color highlight
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on the line. The |:sign| command lets the debugger set this graphic mark. Some
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examples where this feature would be used would be a debugger showing an arrow
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representing the Program Counter (PC) of the program being debugged. Another
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example would be a small stop sign for a line with a breakpoint. These visible
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highlights let the user keep track of certain parts of the state of the
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debugger.
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This feature can be used with more than debuggers, too. An IPE can use a sign
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to highlight build errors, searched text, or other things. The sign feature
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can also work together with the |debug-highlight| to ensure the mark is
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highly visible.
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Debug signs are defined and placed using the |:sign| command.
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1.3 Debug Source Highlight *debug-highlight*
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This feature allows a line to have a predominant highlight. The highlight is
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intended to make a specific line stand out. The highlight could be made to
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work for both vim and gvim, whereas the debug sign is, in most cases, limited
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to gvim. The one exception to this is Sun Microsystem's dtterm. The dtterm
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from Sun has a "sign gutter" for showing signs.
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1.4 Message Footer *gui-footer*
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The message footer can be used to display messages from a debugger or IPE. It
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can also be used to display menu and toolbar tips. The footer area is at the
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bottom of the GUI window, below the line used to display colon commands.
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The display of the footer is controlled by the 'guioptions' letter 'F'.
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1.5 Balloon Evaluation *balloon-eval*
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This feature allows a debugger, or other external tool, to display dynamic
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information based on where the mouse is pointing. The purpose of this feature
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was to allow Sun's Visual WorkShop debugger to display expression evaluations.
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However, the feature was implemented in as general a manner as possible and
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could be used for displaying other information as well. The functionality is
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limited though, for advanced popups see |popup-window|.
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Another way to use the balloon is with the 'balloonexpr' option. This is
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completely user definable.
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The Balloon Evaluation has some settable parameters too. For Motif the font
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list and colors can be set via X resources (XmNballoonEvalFontList,
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XmNballoonEvalBackground, and XmNballoonEvalForeground).
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The 'balloondelay' option sets the delay before an attempt is made to show a
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balloon.
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The 'ballooneval' and/or the 'balloonevalterm' option needs to be set to
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switch it on.
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Balloon evaluation is only available in the GUI when compiled with the
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|+balloon_eval| feature. For the terminal the |+balloon_eval_term| feature
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matters.
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The Balloon evaluation functions are also used to show a tooltip for the
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toolbar. The 'ballooneval' option does not need to be set for this. But the
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other settings apply.
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==============================================================================
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2. Vim Compile Options *debugger-compilation*
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The debugger features were added for use with Sun's Visual WorkShop Integrated
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Programming Environment (ipe). However, they were done in as generic a manner
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as possible so that integration with other debuggers could also use these
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features.
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The following compile time preprocessor variables control the features:
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Alternate Command Input ALT_X_INPUT
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Debug Glyphs FEAT_SIGNS
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Debug Highlights FEAT_SIGNS
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Message Footer FEAT_FOOTER
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Balloon Evaluation FEAT_BEVAL
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The support specifically for Sun Visual WorkShop has been removed, since the
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product no longer exists.
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For Sun NetBeans support see |netbeans|.
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vim:tw=78:sw=4:ts=8:noet:ft=help:norl:
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