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| <h4 class="subsection">27.2.1 <span class="sc">gdb/mi</span> Input Syntax</h4> |
| |
| <p><a name="index-input-syntax-for-_0040sc_007bgdb_002fmi_007d-2003"></a><a name="index-g_t_0040sc_007bgdb_002fmi_007d_002c-input-syntax-2004"></a> |
| <dl> |
| <dt><var>command</var><code> ==></code><dd><var>cli-command</var><code> | </code><var>mi-command</var> |
| |
| <br><dt><var>cli-command</var><code> ==></code><dd><code>[ </code><var>token</var><code> ] </code><var>cli-command</var> <var>nl</var>, where |
| <var>cli-command</var> is any existing <span class="sc">gdb</span> CLI command. |
| |
| <br><dt><var>mi-command</var><code> ==></code><dd><code>[ </code><var>token</var><code> ] "-" </code><var>operation</var><code> ( " " </code><var>option</var><code> )* |
| [ " --" ] ( " " </code><var>parameter</var><code> )* </code><var>nl</var> |
| |
| <br><dt><var>token</var><code> ==></code><dd>"any sequence of digits" |
| |
| <br><dt><var>option</var><code> ==></code><dd><code>"-" </code><var>parameter</var><code> [ " " </code><var>parameter</var><code> ]</code> |
| |
| <br><dt><var>parameter</var><code> ==></code><dd><var>non-blank-sequence</var><code> | </code><var>c-string</var> |
| |
| <br><dt><var>operation</var><code> ==></code><dd><em>any of the operations described in this chapter</em> |
| |
| <br><dt><var>non-blank-sequence</var><code> ==></code><dd><em>anything, provided it doesn't contain special characters such as |
| "-", </em><var>nl</var><em>, """ and of course " "</em> |
| |
| <br><dt><var>c-string</var><code> ==></code><dd><code>""" </code><var>seven-bit-iso-c-string-content</var><code> """</code> |
| |
| <br><dt><var>nl</var><code> ==></code><dd><code>CR | CR-LF</code> |
| </dl> |
| |
| <p class="noindent">Notes: |
| |
| <ul> |
| <li>The CLI commands are still handled by the <span class="sc">mi</span> interpreter; their |
| output is described below. |
| |
| <li>The <var>token</var>, when present, is passed back when the command |
| finishes. |
| |
| <li>Some <span class="sc">mi</span> commands accept optional arguments as part of the parameter |
| list. Each option is identified by a leading ‘<samp><span class="samp">-</span></samp>’ (dash) and may be |
| followed by an optional argument parameter. Options occur first in the |
| parameter list and can be delimited from normal parameters using |
| ‘<samp><span class="samp">--</span></samp>’ (this is useful when some parameters begin with a dash). |
| </ul> |
| |
| <p>Pragmatics: |
| |
| <ul> |
| <li>We want easy access to the existing CLI syntax (for debugging). |
| |
| <li>We want it to be easy to spot a <span class="sc">mi</span> operation. |
| </ul> |
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