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| <h5 class="subsubsection">23.2.2.32 Python representation of lazy strings</h5> |
| |
| <p><a name="index-lazy-strings-in-python-2427"></a><a name="index-gdb_002eLazyString-2428"></a> |
| A <dfn>lazy string</dfn> is a string whose contents is not retrieved or |
| encoded until it is needed. |
| |
| <p>A <code>gdb.LazyString</code> is represented in <span class="sc">gdb</span> as an |
| <code>address</code> that points to a region of memory, an <code>encoding</code> |
| that will be used to encode that region of memory, and a <code>length</code> |
| to delimit the region of memory that represents the string. The |
| difference between a <code>gdb.LazyString</code> and a string wrapped within |
| a <code>gdb.Value</code> is that a <code>gdb.LazyString</code> will be treated |
| differently by <span class="sc">gdb</span> when printing. A <code>gdb.LazyString</code> is |
| retrieved and encoded during printing, while a <code>gdb.Value</code> |
| wrapping a string is immediately retrieved and encoded on creation. |
| |
| <p>A <code>gdb.LazyString</code> object has the following functions: |
| |
| <div class="defun"> |
| — Function: <b>LazyString.value</b> ()<var><a name="index-LazyString_002evalue-2429"></a></var><br> |
| <blockquote><p>Convert the <code>gdb.LazyString</code> to a <code>gdb.Value</code>. This value |
| will point to the string in memory, but will lose all the delayed |
| retrieval, encoding and handling that <span class="sc">gdb</span> applies to a |
| <code>gdb.LazyString</code>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Variable: <b>LazyString.address</b><var><a name="index-LazyString_002eaddress-2430"></a></var><br> |
| <blockquote><p>This attribute holds the address of the string. This attribute is not |
| writable. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Variable: <b>LazyString.length</b><var><a name="index-LazyString_002elength-2431"></a></var><br> |
| <blockquote><p>This attribute holds the length of the string in characters. If the |
| length is -1, then the string will be fetched and encoded up to the |
| first null of appropriate width. This attribute is not writable. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Variable: <b>LazyString.encoding</b><var><a name="index-LazyString_002eencoding-2432"></a></var><br> |
| <blockquote><p>This attribute holds the encoding that will be applied to the string |
| when the string is printed by <span class="sc">gdb</span>. If the encoding is not |
| set, or contains an empty string, then <span class="sc">gdb</span> will select the |
| most appropriate encoding when the string is printed. This attribute |
| is not writable. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Variable: <b>LazyString.type</b><var><a name="index-LazyString_002etype-2433"></a></var><br> |
| <blockquote><p>This attribute holds the type that is represented by the lazy string's |
| type. For a lazy string this is a pointer or array type. To |
| resolve this to the lazy string's character type, use the type's |
| <code>target</code> method. See <a href="Types-In-Python.html#Types-In-Python">Types In Python</a>. This attribute is not |
| writable. |
| </p></blockquote></div> |
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