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| author | Daniel Dunbar <daniel@zuster.org> | 2009-05-21 16:28:43 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2009-05-21 16:28:43 +0000 |
| commit | 4ce774750042043fca78f50575f154f68296ab18 (patch) | |
| tree | 1080d3c2b60a126a6e4f52662108ff837d02b23a /www/resources/Regexp.c.html | |
| parent | 69c4c5548d5e366113b376d77520df7f79142403 (diff) | |
| download | klee-4ce774750042043fca78f50575f154f68296ab18.tar.gz | |
Start basic Regexp.c example for klee.
- A few other web page tweaks. git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@72215 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'www/resources/Regexp.c.html')
| -rw-r--r-- | www/resources/Regexp.c.html | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/www/resources/Regexp.c.html b/www/resources/Regexp.c.html new file mode 100644 index 00000000..cb3e3d75 --- /dev/null +++ b/www/resources/Regexp.c.html @@ -0,0 +1,78 @@ +<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN"> +<HTML> +<HEAD> +<TITLE>Enscript Output</TITLE> +</HEAD> +<BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#1F00FF" ALINK="#FF0000" VLINK="#9900DD"> +<A NAME="top"> +<A NAME="file1"> +<H1>Regexp.c</H1> + +<PRE> +<I><FONT COLOR="#B22222">/* + * Simple regular expression matching. + * + * From: + * The Practice of Programming + * Brian W. Kernighan, Rob Pike + * + */</FONT></I> + +#<B><FONT COLOR="#5F9EA0">include</FONT></B> <B><FONT COLOR="#BC8F8F"><klee/klee.h></FONT></B> + +<B><FONT COLOR="#228B22">static</FONT></B> <B><FONT COLOR="#228B22">int</FONT></B> <B><FONT COLOR="#0000FF">matchhere</FONT></B>(<B><FONT COLOR="#228B22">char</FONT></B>*,<B><FONT COLOR="#228B22">char</FONT></B>*); + +<B><FONT COLOR="#228B22">static</FONT></B> <B><FONT COLOR="#228B22">int</FONT></B> <B><FONT COLOR="#0000FF">matchstar</FONT></B>(<B><FONT COLOR="#228B22">int</FONT></B> c, <B><FONT COLOR="#228B22">char</FONT></B> *re, <B><FONT COLOR="#228B22">char</FONT></B> *text) { + <B><FONT COLOR="#A020F0">do</FONT></B> { + <B><FONT COLOR="#A020F0">if</FONT></B> (matchhere(re, text)) + <B><FONT COLOR="#A020F0">return</FONT></B> 1; + } <B><FONT COLOR="#A020F0">while</FONT></B> (*text != <B><FONT COLOR="#BC8F8F">'\0'</FONT></B> && (*text++ == c || c== <B><FONT COLOR="#BC8F8F">'.'</FONT></B>)); + <B><FONT COLOR="#A020F0">return</FONT></B> 0; +} + +<B><FONT COLOR="#228B22">static</FONT></B> <B><FONT COLOR="#228B22">int</FONT></B> <B><FONT COLOR="#0000FF">matchhere</FONT></B>(<B><FONT COLOR="#228B22">char</FONT></B> *re, <B><FONT COLOR="#228B22">char</FONT></B> *text) { + <B><FONT COLOR="#A020F0">if</FONT></B> (re[0] == <B><FONT COLOR="#BC8F8F">'\0'</FONT></B>) + <B><FONT COLOR="#A020F0">return</FONT></B> 0; + <B><FONT COLOR="#A020F0">if</FONT></B> (re[1] == <B><FONT COLOR="#BC8F8F">'*'</FONT></B>) + <B><FONT COLOR="#A020F0">return</FONT></B> matchstar(re[0], re+2, text); + <B><FONT COLOR="#A020F0">if</FONT></B> (re[0] == <B><FONT COLOR="#BC8F8F">'$'</FONT></B> && re[1]==<B><FONT COLOR="#BC8F8F">'\0'</FONT></B>) + <B><FONT COLOR="#A020F0">return</FONT></B> *text == <B><FONT COLOR="#BC8F8F">'\0'</FONT></B>; + <B><FONT COLOR="#A020F0">if</FONT></B> (*text!=<B><FONT COLOR="#BC8F8F">'\0'</FONT></B> && (re[0]==<B><FONT COLOR="#BC8F8F">'.'</FONT></B> || re[0]==*text)) + <B><FONT COLOR="#A020F0">return</FONT></B> matchhere(re+1, text+1); + <B><FONT COLOR="#A020F0">return</FONT></B> 0; +} + +<B><FONT COLOR="#228B22">int</FONT></B> <B><FONT COLOR="#0000FF">match</FONT></B>(<B><FONT COLOR="#228B22">char</FONT></B> *re, <B><FONT COLOR="#228B22">char</FONT></B> *text) { + <B><FONT COLOR="#A020F0">if</FONT></B> (re[0] == <B><FONT COLOR="#BC8F8F">'^'</FONT></B>) + <B><FONT COLOR="#A020F0">return</FONT></B> matchhere(re+1, text); + <B><FONT COLOR="#A020F0">do</FONT></B> { + <B><FONT COLOR="#A020F0">if</FONT></B> (matchhere(re, text)) + <B><FONT COLOR="#A020F0">return</FONT></B> 1; + } <B><FONT COLOR="#A020F0">while</FONT></B> (*text++ != <B><FONT COLOR="#BC8F8F">'\0'</FONT></B>); + <B><FONT COLOR="#A020F0">return</FONT></B> 0; +} + +<I><FONT COLOR="#B22222">/* + * Harness for testing with KLEE. + */</FONT></I> + +<I><FONT COLOR="#B22222">// The size of the buffer to test with. +</FONT></I>#<B><FONT COLOR="#5F9EA0">define</FONT></B> <FONT COLOR="#B8860B">SIZE</FONT> 7 + +<B><FONT COLOR="#228B22">int</FONT></B> <B><FONT COLOR="#0000FF">main</FONT></B>() { + <I><FONT COLOR="#B22222">// The input regular expression. +</FONT></I> <B><FONT COLOR="#228B22">char</FONT></B> re[SIZE]; + + <I><FONT COLOR="#B22222">// Make the input symbolic. +</FONT></I> klee_make_symbolic_name(re, <B><FONT COLOR="#A020F0">sizeof</FONT></B> re, <B><FONT COLOR="#BC8F8F">"re"</FONT></B>); + + <I><FONT COLOR="#B22222">// Try to match against a constant string "hello". +</FONT></I> match(re, <B><FONT COLOR="#BC8F8F">"hello"</FONT></B>); + + <B><FONT COLOR="#A020F0">return</FONT></B> 0; +} +</PRE> +<HR> +<ADDRESS>Generated by <A HREF="http://www.iki.fi/~mtr/genscript/">GNU enscript 1.6.4</A>.</ADDRESS> +</BODY> +</HTML> |