83 lines
3.6 KiB
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83 lines
3.6 KiB
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<title>Ada Mode Intro - Debugging with GDB</title>
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<link rel="up" href="Ada.html#Ada" title="Ada">
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<link rel="next" href="Omissions-from-Ada.html#Omissions-from-Ada" title="Omissions from Ada">
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Permission is granted to copy, distribute and/or modify this document
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<div class="node">
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<a name="Ada-Mode-Intro"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Omissions-from-Ada.html#Omissions-from-Ada">Omissions from Ada</a>,
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Up: <a rel="up" accesskey="u" href="Ada.html#Ada">Ada</a>
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<hr>
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</div>
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<h5 class="subsubsection">15.4.10.1 Introduction</h5>
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<p><a name="index-Ada-mode_002c-general-1058"></a>
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The Ada mode of <span class="sc">gdb</span> supports a fairly large subset of Ada expression
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syntax, with some extensions.
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The philosophy behind the design of this subset is
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<ul>
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<li>That <span class="sc">gdb</span> should provide basic literals and access to operations for
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arithmetic, dereferencing, field selection, indexing, and subprogram calls,
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leaving more sophisticated computations to subprograms written into the
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program (which therefore may be called from <span class="sc">gdb</span>).
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<li>That type safety and strict adherence to Ada language restrictions
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are not particularly important to the <span class="sc">gdb</span> user.
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<li>That brevity is important to the <span class="sc">gdb</span> user.
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</ul>
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<p>Thus, for brevity, the debugger acts as if all names declared in
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user-written packages are directly visible, even if they are not visible
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according to Ada rules, thus making it unnecessary to fully qualify most
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names with their packages, regardless of context. Where this causes
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ambiguity, <span class="sc">gdb</span> asks the user's intent.
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<p>The debugger will start in Ada mode if it detects an Ada main program.
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As for other languages, it will enter Ada mode when stopped in a program that
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was translated from an Ada source file.
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<p>While in Ada mode, you may use `<tt>–</tt>' for comments. This is useful
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mostly for documenting command files. The standard <span class="sc">gdb</span> comment
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(‘<samp><span class="samp">#</span></samp>’) still works at the beginning of a line in Ada mode, but not in the
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middle (to allow based literals).
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</body></html>
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