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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/cppinternals/index.html | |
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diff --git a/share/doc/cppinternals/index.html b/share/doc/cppinternals/index.html new file mode 100644 index 0000000..db1fad9 --- /dev/null +++ b/share/doc/cppinternals/index.html @@ -0,0 +1,160 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>The GNU C Preprocessor Internals: Top</title> + +<meta name="description" content="The GNU C Preprocessor Internals: Top"> +<meta name="keywords" content="The GNU C Preprocessor Internals: Top"> +<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="#Top" rel="start" title="Top"> +<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> +<link href="#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="../dir/index.html" rel="up" title="(dir)"> +<link href="Conventions.html#Conventions" rel="next" title="Conventions"> +<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"> +<h1 class="settitle" align="center">The GNU C Preprocessor Internals</h1> + + + + + + + + + + + + + +<a name="SEC_Contents"></a> +<h2 class="contents-heading">Table of Contents</h2> + +<div class="contents"> + +<ul class="no-bullet"> + <li><a name="toc-Cpplib_002d_002d_002dthe-GNU-C-Preprocessor" href="#Cpplib_002d_002d_002dthe-GNU-C-Preprocessor">1 Cpplib—the GNU C Preprocessor</a></li> + <li><a name="toc-Conventions-1" href="Conventions.html#Conventions">Conventions</a></li> + <li><a name="toc-The-Lexer" href="Lexer.html#Lexer">The Lexer</a> + <ul class="no-bullet"> + <li><a name="toc-Overview" href="Lexer.html#Overview">Overview</a></li> + <li><a name="toc-Lexing-a-token" href="Lexer.html#Lexing-a-token">Lexing a token</a></li> + <li><a name="toc-Lexing-a-line-1" href="Lexer.html#Lexing-a-line-1">Lexing a line</a></li> + </ul></li> + <li><a name="toc-Hash-Nodes-1" href="Hash-Nodes.html#Hash-Nodes">Hash Nodes</a></li> + <li><a name="toc-Macro-Expansion-Algorithm" href="Macro-Expansion.html#Macro-Expansion">Macro Expansion Algorithm</a> + <ul class="no-bullet"> + <li><a name="toc-Internal-representation-of-macros" href="Macro-Expansion.html#Internal-representation-of-macros">Internal representation of macros</a></li> + <li><a name="toc-Macro-expansion-overview" href="Macro-Expansion.html#Macro-expansion-overview">Macro expansion overview</a></li> + <li><a name="toc-Scanning-the-replacement-list-for-macros-to-expand" href="Macro-Expansion.html#Scanning-the-replacement-list-for-macros-to-expand">Scanning the replacement list for macros to expand</a></li> + <li><a name="toc-Looking-for-a-function_002dlike-macro_0027s-opening-parenthesis" href="Macro-Expansion.html#Looking-for-a-function_002dlike-macro_0027s-opening-parenthesis">Looking for a function-like macro’s opening parenthesis</a></li> + <li><a name="toc-Marking-tokens-ineligible-for-future-expansion" href="Macro-Expansion.html#Marking-tokens-ineligible-for-future-expansion">Marking tokens ineligible for future expansion</a></li> + </ul></li> + <li><a name="toc-Token-Spacing-1" href="Token-Spacing.html#Token-Spacing">Token Spacing</a></li> + <li><a name="toc-Line-numbering" href="Line-Numbering.html#Line-Numbering">Line numbering</a> + <ul class="no-bullet"> + <li><a name="toc-Just-which-line-number-anyway_003f" href="Line-Numbering.html#Just-which-line-number-anyway_003f">Just which line number anyway?</a></li> + <li><a name="toc-Representation-of-line-numbers" href="Line-Numbering.html#Representation-of-line-numbers">Representation of line numbers</a></li> + </ul></li> + <li><a name="toc-The-Multiple_002dInclude-Optimization" href="Guard-Macros.html#Guard-Macros">The Multiple-Include Optimization</a></li> + <li><a name="toc-File-Handling" href="Files.html#Files">File Handling</a></li> + <li><a name="toc-Concept-Index-1" href="Concept-Index.html#Concept-Index">Concept Index</a></li> +</ul> +</div> + + +<a name="Top"></a> +<div class="header"> +<p> +Next: <a href="Conventions.html#Conventions" accesskey="n" rel="next">Conventions</a>, Up: <a href="../dir/index.html" accesskey="u" rel="up">(dir)</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="SEC_Top"></a> +<a name="Cpplib_002d_002d_002dthe-GNU-C-Preprocessor"></a> +<h2 class="chapter">1 Cpplib—the GNU C Preprocessor</h2> + +<p>The GNU C preprocessor is +implemented as a library, <em>cpplib</em>, so it can be easily shared between +a stand-alone preprocessor, and a preprocessor integrated with the C, +C++ and Objective-C front ends. It is also available for use by other +programs, though this is not recommended as its exposed interface has +not yet reached a point of reasonable stability. +</p> +<p>The library has been written to be re-entrant, so that it can be used +to preprocess many files simultaneously if necessary. It has also been +written with the preprocessing token as the fundamental unit; the +preprocessor in previous versions of GCC would operate on text strings +as the fundamental unit. +</p> +<p>This brief manual documents the internals of cpplib, and explains some +of the tricky issues. It is intended that, along with the comments in +the source code, a reasonably competent C programmer should be able to +figure out what the code is doing, and why things have been implemented +the way they have. +</p> +<table class="menu" border="0" cellspacing="0"> +<tr><td align="left" valign="top">• <a href="Conventions.html#Conventions" accesskey="1">Conventions</a>:</td><td> </td><td align="left" valign="top">Conventions used in the code. +</td></tr> +<tr><td align="left" valign="top">• <a href="Lexer.html#Lexer" accesskey="2">Lexer</a>:</td><td> </td><td align="left" valign="top">The combined C, C++ and Objective-C Lexer. +</td></tr> +<tr><td align="left" valign="top">• <a href="Hash-Nodes.html#Hash-Nodes" accesskey="3">Hash Nodes</a>:</td><td> </td><td align="left" valign="top">All identifiers are entered into a hash table. +</td></tr> +<tr><td align="left" valign="top">• <a href="Macro-Expansion.html#Macro-Expansion" accesskey="4">Macro Expansion</a>:</td><td> </td><td align="left" valign="top">Macro expansion algorithm. +</td></tr> +<tr><td align="left" valign="top">• <a href="Token-Spacing.html#Token-Spacing" accesskey="5">Token Spacing</a>:</td><td> </td><td align="left" valign="top">Spacing and paste avoidance issues. +</td></tr> +<tr><td align="left" valign="top">• <a href="Line-Numbering.html#Line-Numbering" accesskey="6">Line Numbering</a>:</td><td> </td><td align="left" valign="top">Tracking location within files. +</td></tr> +<tr><td align="left" valign="top">• <a href="Guard-Macros.html#Guard-Macros" accesskey="7">Guard Macros</a>:</td><td> </td><td align="left" valign="top">Optimizing header files with guard macros. +</td></tr> +<tr><td align="left" valign="top">• <a href="Files.html#Files" accesskey="8">Files</a>:</td><td> </td><td align="left" valign="top">File handling. +</td></tr> +<tr><td align="left" valign="top">• <a href="Concept-Index.html#Concept-Index" accesskey="9">Concept Index</a>:</td><td> </td><td align="left" valign="top">Index. +</td></tr> +</table> + +<hr> +<div class="header"> +<p> +Next: <a href="Conventions.html#Conventions" accesskey="n" rel="next">Conventions</a>, Up: <a href="../dir/index.html" accesskey="u" rel="up">(dir)</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |