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<TITLE>flex: a fast lexical analyzer generator - Table of Contents</TITLE>
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<H1>Flex, version 2.5.23</H1>
<H2>A fast scanner generator</H2>
<H2>Edition 2.5.23, 21 October 2002</H2>
<ADDRESS>Vern Paxson</ADDRESS>
<ADDRESS>W. L. Estes</ADDRESS>
<ADDRESS>John Millaway</ADDRESS>
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<LI><A NAME="TOC1" HREF="flex.html#SEC1">Copyright</A>
<LI><A NAME="TOC2" HREF="flex.html#SEC2">Reporting Bugs</A>
<LI><A NAME="TOC3" HREF="flex.html#SEC3">Introduction</A>
<LI><A NAME="TOC4" HREF="flex.html#SEC4">Some Simple Examples</A>
<LI><A NAME="TOC5" HREF="flex.html#SEC5">Format of the Input File</A>
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<LI><A NAME="TOC6" HREF="flex.html#SEC6">Format of the Definitions Section</A>
<LI><A NAME="TOC7" HREF="flex.html#SEC7">Format of the Rules Section</A>
<LI><A NAME="TOC8" HREF="flex.html#SEC8">Format of the User Code Section</A>
<LI><A NAME="TOC9" HREF="flex.html#SEC9">Comments in the Input</A>
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<LI><A NAME="TOC10" HREF="flex.html#SEC10">Patterns</A>
<LI><A NAME="TOC11" HREF="flex.html#SEC11">How the Input Is Matched</A>
<LI><A NAME="TOC12" HREF="flex.html#SEC12">Actions</A>
<LI><A NAME="TOC13" HREF="flex.html#SEC13">The Generated Scanner</A>
<LI><A NAME="TOC14" HREF="flex.html#SEC14">Start Conditions</A>
<LI><A NAME="TOC15" HREF="flex.html#SEC15">Multiple Input Buffers</A>
<LI><A NAME="TOC16" HREF="flex.html#SEC16">End-of-File Rules</A>
<LI><A NAME="TOC17" HREF="flex.html#SEC17">Miscellaneous Macros</A>
<LI><A NAME="TOC18" HREF="flex.html#SEC18">Values Available To the User</A>
<LI><A NAME="TOC19" HREF="flex.html#SEC19">Interfacing with Yacc</A>
<LI><A NAME="TOC20" HREF="flex.html#SEC20">Scanner Options</A>
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<LI><A NAME="TOC21" HREF="flex.html#SEC21">Options for Specifing Filenames</A>
<LI><A NAME="TOC22" HREF="flex.html#SEC22">Options Affecting Scanner Behavior</A>
<LI><A NAME="TOC23" HREF="flex.html#SEC23">Code-Level And API Options</A>
<LI><A NAME="TOC24" HREF="flex.html#SEC24">Options for Scanner Speed and Size</A>
<LI><A NAME="TOC25" HREF="flex.html#SEC25">Debugging Options</A>
<LI><A NAME="TOC26" HREF="flex.html#SEC26">Miscellaneous Options</A>
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<LI><A NAME="TOC27" HREF="flex.html#SEC27">Performance Considerations</A>
<LI><A NAME="TOC28" HREF="flex.html#SEC28">Generating C++ Scanners</A>
<LI><A NAME="TOC29" HREF="flex.html#SEC29">Reentrant C Scanners</A>
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<LI><A NAME="TOC30" HREF="flex.html#SEC30">Uses for Reentrant Scanners</A>
<LI><A NAME="TOC31" HREF="flex.html#SEC31">An Overview of the Reentrant API</A>
<LI><A NAME="TOC32" HREF="flex.html#SEC32">Reentrant Example</A>
<LI><A NAME="TOC33" HREF="flex.html#SEC33">The Reentrant API in Detail</A>
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<LI><A NAME="TOC34" HREF="flex.html#SEC34">Declaring a Scanner As Reentrant</A>
<LI><A NAME="TOC35" HREF="flex.html#SEC35">The Extra Argument</A>
<LI><A NAME="TOC36" HREF="flex.html#SEC36">Global Variables Replaced By Macros</A>
<LI><A NAME="TOC37" HREF="flex.html#SEC37">Init and Destroy Functions</A>
<LI><A NAME="TOC38" HREF="flex.html#SEC38">Accessing Variables with Reentrant Scanners</A>
<LI><A NAME="TOC39" HREF="flex.html#SEC39">Extra Data</A>
<LI><A NAME="TOC40" HREF="flex.html#SEC40">About yyscan_t</A>
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<LI><A NAME="TOC41" HREF="flex.html#SEC41">Functions and Macros Available in Reentrant C Scanners</A>
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<LI><A NAME="TOC42" HREF="flex.html#SEC42">Incompatibilities with Lex and Posix</A>
<LI><A NAME="TOC43" HREF="flex.html#SEC43">Memory Management</A>
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<LI><A NAME="TOC44" HREF="flex.html#SEC44">The Default Memory Management</A>
<LI><A NAME="TOC45" HREF="flex.html#SEC45">Overriding The Default Memory Management</A>
<LI><A NAME="TOC46" HREF="flex.html#SEC46">A Note About yytext And Memory</A>
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<LI><A NAME="TOC47" HREF="flex.html#SEC47">Serialized Tables</A>
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<LI><A NAME="TOC48" HREF="flex.html#SEC48">Creating Serialized Tables</A>
<LI><A NAME="TOC49" HREF="flex.html#SEC49">Loading and Unloading Serialized Tables</A>
<LI><A NAME="TOC50" HREF="flex.html#SEC50">Tables File Format</A>
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<LI><A NAME="TOC51" HREF="flex.html#SEC51">Diagnostics</A>
<LI><A NAME="TOC52" HREF="flex.html#SEC52">Limitations</A>
<LI><A NAME="TOC53" HREF="flex.html#SEC53">Additional Reading</A>
<LI><A NAME="TOC54" HREF="flex.html#SEC54">FAQ</A>
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<LI><A NAME="TOC55" HREF="flex.html#SEC55">When was flex born?</A>
<LI><A NAME="TOC56" HREF="flex.html#SEC56">How do I expand \ escape sequences in C-style quoted strings?</A>
<LI><A NAME="TOC57" HREF="flex.html#SEC57">Why do flex scanners call fileno if it is not ANSI compatible?</A>
<LI><A NAME="TOC58" HREF="flex.html#SEC58">Does flex support recursive pattern definitions?</A>
<LI><A NAME="TOC59" HREF="flex.html#SEC59">How do I skip huge chunks of input (tens of megabytes) while using flex?</A>
<LI><A NAME="TOC60" HREF="flex.html#SEC60">Flex is not matching my patterns in the same order that I defined them.</A>
<LI><A NAME="TOC61" HREF="flex.html#SEC61">My actions are executing out of order or sometimes not at all.</A>
<LI><A NAME="TOC62" HREF="flex.html#SEC62">How can I have multiple input sources feed into the same scanner at the same time?</A>
<LI><A NAME="TOC63" HREF="flex.html#SEC63">Can I build nested parsers that work with the same input file?</A>
<LI><A NAME="TOC64" HREF="flex.html#SEC64">How can I match text only at the end of a file?</A>
<LI><A NAME="TOC65" HREF="flex.html#SEC65">How can I make REJECT cascade across start condition boundaries?</A>
<LI><A NAME="TOC66" HREF="flex.html#SEC66">Why can't I use fast or full tables with interactive mode?</A>
<LI><A NAME="TOC67" HREF="flex.html#SEC67">How much faster is -F or -f than -C?</A>
<LI><A NAME="TOC68" HREF="flex.html#SEC68">If I have a simple grammar can't I just parse it with flex?</A>
<LI><A NAME="TOC69" HREF="flex.html#SEC69">Why doesn't yyrestart() set the start state back to INITIAL?</A>
<LI><A NAME="TOC70" HREF="flex.html#SEC70">How can I match C-style comments?</A>
<LI><A NAME="TOC71" HREF="flex.html#SEC71">The '.' isn't working the way I expected.</A>
<LI><A NAME="TOC72" HREF="flex.html#SEC72">Can I get the flex manual in another format?</A>
<LI><A NAME="TOC73" HREF="flex.html#SEC73">Does there exist a "faster" NDFA->DFA algorithm?</A>
<LI><A NAME="TOC74" HREF="flex.html#SEC74">How does flex compile the DFA so quickly?</A>
<LI><A NAME="TOC75" HREF="flex.html#SEC75">How can I use more than 8192 rules?</A>
<LI><A NAME="TOC76" HREF="flex.html#SEC76">How do I abandon a file in the middle of a scan and switch to a new file?</A>
<LI><A NAME="TOC77" HREF="flex.html#SEC77">How do I execute code only during initialization (only before the first scan)?</A>
<LI><A NAME="TOC78" HREF="flex.html#SEC78">How do I execute code at termination?</A>
<LI><A NAME="TOC79" HREF="flex.html#SEC79">Where else can I find help?</A>
<LI><A NAME="TOC80" HREF="flex.html#SEC80">Can I include comments in the "rules" section of the file?</A>
<LI><A NAME="TOC81" HREF="flex.html#SEC81">I get an error about undefined yywrap().</A>
<LI><A NAME="TOC82" HREF="flex.html#SEC82">How can I change the matching pattern at run time?</A>
<LI><A NAME="TOC83" HREF="flex.html#SEC83">How can I expand macros in the input?</A>
<LI><A NAME="TOC84" HREF="flex.html#SEC84">How can I build a two-pass scanner?</A>
<LI><A NAME="TOC85" HREF="flex.html#SEC85">How do I match any string not matched in the preceding rules?</A>
<LI><A NAME="TOC86" HREF="flex.html#SEC86">I am trying to port code from AT&T lex that uses yysptr and yysbuf.</A>
<LI><A NAME="TOC87" HREF="flex.html#SEC87">Is there a way to make flex treat NULL like a regular character?</A>
<LI><A NAME="TOC88" HREF="flex.html#SEC88">Whenever flex can not match the input it says "flex scanner jammed".</A>
<LI><A NAME="TOC89" HREF="flex.html#SEC89">Why doesn't flex have non-greedy operators like perl does?</A>
<LI><A NAME="TOC90" HREF="flex.html#SEC90">Memory leak - 16386 bytes allocated by malloc.</A>
<LI><A NAME="TOC91" HREF="flex.html#SEC91">How do I track the byte offset for lseek()?</A>
<LI><A NAME="TOC92" HREF="flex.html#SEC92">How do I use my own I/O classes in a C++ scanner?</A>
<LI><A NAME="TOC93" HREF="flex.html#SEC93">How do I skip as many chars as possible?</A>
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</UL>
<LI><A NAME="TOC154" HREF="flex.html#SEC154">Appendices</A>
<UL>
<LI><A NAME="TOC155" HREF="flex.html#SEC155">Makefiles and Flex</A>
<LI><A NAME="TOC156" HREF="flex.html#SEC156">C Scanners with Bison Parsers</A>
</UL>
<LI><A NAME="TOC157" HREF="flex.html#SEC157">Indices</A>
<UL>
<LI><A NAME="TOC158" HREF="flex.html#SEC158">Concept Index</A>
<LI><A NAME="TOC159" HREF="flex.html#SEC159">Index of Functions and Macros</A>
<LI><A NAME="TOC160" HREF="flex.html#SEC160">Index of Variables</A>
<LI><A NAME="TOC161" HREF="flex.html#SEC161">Index of Data Types</A>
<LI><A NAME="TOC162" HREF="flex.html#SEC162">Index of Hooks</A>
<LI><A NAME="TOC163" HREF="flex.html#SEC163">Index of Scanner Options</A>
</UL>
</UL>
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