| <html lang="en"> |
| <head> |
| <title>Guile Types Module - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="Guile-Modules.html#Guile-Modules" title="Guile Modules"> |
| <link rel="prev" href="Guile-Printing-Module.html#Guile-Printing-Module" title="Guile Printing Module"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988-2019 Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being ``Free Software'' and ``Free Software Needs |
| Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,'' |
| and with the Back-Cover Texts as in (a) below. |
| |
| (a) The FSF's Back-Cover Text is: ``You are free to copy and modify |
| this GNU Manual. Buying copies from GNU Press supports the FSF in |
| developing GNU and promoting software freedom.'' |
| --> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="Guile-Types-Module"></a> |
| <p> |
| Previous: <a rel="previous" accesskey="p" href="Guile-Printing-Module.html#Guile-Printing-Module">Guile Printing Module</a>, |
| Up: <a rel="up" accesskey="u" href="Guile-Modules.html#Guile-Modules">Guile Modules</a> |
| <hr> |
| </div> |
| |
| <h5 class="subsubsection">23.3.5.2 Guile Types Module</h5> |
| |
| <p>This module provides a collection of utilities for working with |
| <code><gdb:type></code> objects. |
| |
| <p>Usage: |
| |
| <pre class="smallexample"> (use-modules (gdb types)) |
| </pre> |
| <div class="defun"> |
| — Scheme Procedure: <b>get-basic-type</b><var> type<a name="index-get_002dbasic_002dtype-2879"></a></var><br> |
| <blockquote><p>Return <var>type</var> with const and volatile qualifiers stripped, |
| and with typedefs and C<tt>++</tt> references converted to the underlying type. |
| |
| <p>C<tt>++</tt> example: |
| |
| <pre class="smallexample"> typedef const int const_int; |
| const_int foo (3); |
| const_int& foo_ref (foo); |
| int main () { return 0; } |
| </pre> |
| <p>Then in gdb: |
| |
| <pre class="smallexample"> (gdb) start |
| (gdb) guile (use-modules (gdb) (gdb types)) |
| (gdb) guile (define foo-ref (parse-and-eval "foo_ref")) |
| (gdb) guile (get-basic-type (value-type foo-ref)) |
| int |
| </pre> |
| </blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>type-has-field-deep?</b><var> type field<a name="index-type_002dhas_002dfield_002ddeep_003f-2880"></a></var><br> |
| <blockquote><p>Return <code>#t</code> if <var>type</var>, assumed to be a type with fields |
| (e.g., a structure or union), has field <var>field</var>. |
| Otherwise return <code>#f</code>. |
| This searches baseclasses, whereas <code>type-has-field?</code> does not. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>make-enum-hashtable</b><var> enum-type<a name="index-make_002denum_002dhashtable-2881"></a></var><br> |
| <blockquote><p>Return a Guile hash table produced from <var>enum-type</var>. |
| Elements in the hash table are referenced with <code>hashq-ref</code>. |
| </p></blockquote></div> |
| |
| </body></html> |
| |
