forked from osmocom/wireshark
8f1fff2e6a
into epan/ftypes. Re-write display filter routines using Lemon parser instead of yacc. Besides using a different tool, the new grammar is much simpler, while the display filter engine itself is more powerful and more easily extended. Add dftest executable, to test display filter "bytecode" generation. Add option to "configure" to build dftest or randpkt, both of which are not built by default. Implement Ed Warnicke's ideas about dranges in the new display filter and ftype code. Remove type FT_TEXT_ONLY in favor of FT_NONE, and have protocols registered as FT_PROTOCOL. Thus, FT_NONE is used only for simple labels in the proto tree, while FT_PROTOCOL is used for protocols. This was necessary for being able to make byte slices (ranges) out of protocols, like "frame[0:3]" Win32 Makefile.nmake's will be added tonight. svn path=/trunk/; revision=2967
60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
/* $Id: lemonflex-tail.inc,v 1.1 2001/02/01 20:21:25 gram Exp $ */
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/* This file is #include'd at the bottom of a Lex/Flex scanner
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for use with the Lemon parser. You must have #define'd:
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MODNAME module name for creating function names:
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Prototypes:
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void MODNAME_scanner_text(char *text);
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void MODNAME_scanner_cleanup(void);
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int MODNAME_wrap(void);
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*/
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#include <cppmagic.h>
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#define TEXT_FUNC CONCAT(MODNAME,_scanner_text)
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#define FILE_FUNC CONCAT(MODNAME,_scanner_file)
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#define CLEANUP_FUNC CONCAT(MODNAME,_scanner_cleanup)
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#define WRAP_FUNC CONCAT(MODNAME,_wrap)
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/* Resets scanner and assigns the char* argument
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* as the text to scan
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*/
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void
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TEXT_FUNC (const char *text)
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{
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yy_scan_string(text);
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}
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void
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FILE_FUNC (FILE* fh)
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{
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YY_BUFFER_STATE new_buffer;
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new_buffer = yy_create_buffer(fh, YY_BUF_SIZE);
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yy_switch_to_buffer(new_buffer);
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}
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void
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CLEANUP_FUNC (void)
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{
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BEGIN(INITIAL);
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yy_delete_buffer(YY_CURRENT_BUFFER);
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}
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/* Flex has an option '%option noyywrap' so that I don't have to
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* provide this yywrap function, but in order to maintain portability,
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* I'll just use this yywrap() function.
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*/
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int
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WRAP_FUNC ()
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{
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return 1; /* stop at EOF, instead of looking for next file */
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}
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