diff options
Diffstat (limited to 'share/doc/gccint/C_002b_002b-Expressions.html')
-rw-r--r-- | share/doc/gccint/C_002b_002b-Expressions.html | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/share/doc/gccint/C_002b_002b-Expressions.html b/share/doc/gccint/C_002b_002b-Expressions.html new file mode 100644 index 0000000..3eecec7 --- /dev/null +++ b/share/doc/gccint/C_002b_002b-Expressions.html @@ -0,0 +1,138 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 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 "Funding Free Software", the Front-Cover +Texts being (a) (see below), and with the Back-Cover Texts being (b) +(see below). A copy of the license is included in the section entitled +"GNU Free Documentation License". + +(a) The FSF's Front-Cover Text is: + +A GNU Manual + +(b) The FSF's Back-Cover Text is: + +You have freedom to copy and modify this GNU Manual, like GNU + software. Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>GNU Compiler Collection (GCC) Internals: C++ Expressions</title> + +<meta name="description" content="GNU Compiler Collection (GCC) Internals: C++ Expressions"> +<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: C++ Expressions"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="C-and-C_002b_002b-Trees.html#C-and-C_002b_002b-Trees" rel="up" title="C and C++ Trees"> +<link href="GIMPLE.html#GIMPLE" rel="next" title="GIMPLE"> +<link href="Statements-for-C-and-C_002b_002b.html#Statements-for-C-and-C_002b_002b" rel="previous" title="Statements for C and C++"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="C_002b_002b-Expressions"></a> +<div class="header"> +<p> +Previous: <a href="Statements-for-C-and-C_002b_002b.html#Statements-for-C-and-C_002b_002b" accesskey="p" rel="previous">Statements for C and C++</a>, Up: <a href="C-and-C_002b_002b-Trees.html#C-and-C_002b_002b-Trees" accesskey="u" rel="up">C and C++ Trees</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> +</div> +<hr> +<a name="C_002b_002b-Expressions-1"></a> +<h4 class="subsection">11.10.6 C++ Expressions</h4> + +<p>This section describes expressions specific to the C and C++ front +ends. +</p> +<dl compact="compact"> +<dt><code>TYPEID_EXPR</code></dt> +<dd> +<p>Used to represent a <code>typeid</code> expression. +</p> +</dd> +<dt><code>NEW_EXPR</code></dt> +<dt><code>VEC_NEW_EXPR</code></dt> +<dd> +<p>Used to represent a call to <code>new</code> and <code>new[]</code> respectively. +</p> +</dd> +<dt><code>DELETE_EXPR</code></dt> +<dt><code>VEC_DELETE_EXPR</code></dt> +<dd> +<p>Used to represent a call to <code>delete</code> and <code>delete[]</code> respectively. +</p> +</dd> +<dt><code>MEMBER_REF</code></dt> +<dd> +<p>Represents a reference to a member of a class. +</p> +</dd> +<dt><code>THROW_EXPR</code></dt> +<dd> +<p>Represents an instance of <code>throw</code> in the program. Operand 0, +which is the expression to throw, may be <code>NULL_TREE</code>. +</p> + +</dd> +<dt><code>AGGR_INIT_EXPR</code></dt> +<dd><p>An <code>AGGR_INIT_EXPR</code> represents the initialization as the return +value of a function call, or as the result of a constructor. An +<code>AGGR_INIT_EXPR</code> will only appear as a full-expression, or as the +second operand of a <code>TARGET_EXPR</code>. <code>AGGR_INIT_EXPR</code>s have +a representation similar to that of <code>CALL_EXPR</code>s. You can use +the <code>AGGR_INIT_EXPR_FN</code> and <code>AGGR_INIT_EXPR_ARG</code> macros to access +the function to call and the arguments to pass. +</p> +<p>If <code>AGGR_INIT_VIA_CTOR_P</code> holds of the <code>AGGR_INIT_EXPR</code>, then +the initialization is via a constructor call. The address of the +<code>AGGR_INIT_EXPR_SLOT</code> operand, which is always a <code>VAR_DECL</code>, +is taken, and this value replaces the first argument in the argument +list. +</p> +<p>In either case, the expression is void. +</p> + +</dd> +</dl> + + + + +</body> +</html> |