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| <a name="Macros-and-Functions"></a> |
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| Next: <a href="Identifiers.html#Identifiers" accesskey="n" rel="next">Identifiers</a>, Up: <a href="Tree-overview.html#Tree-overview" accesskey="u" rel="up">Tree overview</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="Trees"></a> |
| <h4 class="subsection">10.2.1 Trees</h4> |
| <a name="index-tree-1"></a> |
| <a name="index-TREE_005fCHAIN"></a> |
| <a name="index-TREE_005fTYPE"></a> |
| |
| <p>All GENERIC trees have two fields in common. First, <code>TREE_CHAIN</code> |
| is a pointer that can be used as a singly-linked list to other trees. |
| The other is <code>TREE_TYPE</code>. Many trees store the type of an |
| expression or declaration in this field. |
| </p> |
| <p>These are some other functions for handling trees: |
| </p> |
| <dl compact="compact"> |
| <dt><code>tree_size</code> |
| <a name="index-tree_005fsize"></a> |
| </dt> |
| <dd><p>Return the number of bytes a tree takes. |
| </p> |
| </dd> |
| <dt><code>build0</code> |
| <a name="index-build0"></a> |
| </dt> |
| <dt><code>build1</code> |
| <a name="index-build1"></a> |
| </dt> |
| <dt><code>build2</code> |
| <a name="index-build2"></a> |
| </dt> |
| <dt><code>build3</code> |
| <a name="index-build3"></a> |
| </dt> |
| <dt><code>build4</code> |
| <a name="index-build4"></a> |
| </dt> |
| <dt><code>build5</code> |
| <a name="index-build5"></a> |
| </dt> |
| <dt><code>build6</code> |
| <a name="index-build6"></a> |
| </dt> |
| <dd> |
| <p>These functions build a tree and supply values to put in each |
| parameter. The basic signature is ‘<samp>code, type, [operands]<!-- /@w --></samp>’. |
| <code>code</code> is the <code>TREE_CODE</code>, and <code>type</code> is a tree |
| representing the <code>TREE_TYPE</code>. These are followed by the |
| operands, each of which is also a tree. |
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