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while and killing centaurs with the flechette. - Fixed: Moving to an old level in a hub caused the old player's inventory to spawn owned by the current player (but still hanging off the old player), so the game would hang when trying to delete it. - Modified re2c so that it doesn't add a date to the file it generates. Thus, if it regenerates a file during a full rebuild, SVN won't see it as a change. Also updated it to 0.10.5. - Fixed: SC_GetString() did not properly terminate sc_String when the last token in the file had no white space after it. Since I could not actually find the problem (it works fine in debug mode and I saw no logic errors), I decided to take this opportunity to reimplement it using an re2c-generated scanner. Now it's 1.6x faster than before and correctness is easier to verify. - Fixed: FMODSoundRenderer::Shutdown() also needs to reset NumChannels. - Added back the Manifest to zdoom.rc for non-VC8 Windows compilers. - Fixed MinGW compilation again. Now it uses the same method as Makefile.linux to find all the source files so that it doesn't need to be manually updated each time source files are added or removed. - Added the SVN revision number to the version string. A new tool is used to obtain this information from the svnversion command and write it into a header file. If you don't have the svn command line tools installed or didn't check it out from the repository, you can still build. I added some rules for this to Makefile.linux, and I assume they work because they do for Makefile.mingw. - Fixed: MIDISong2 did not delete MusHeader in its destructor. SVN r200 (trunk)
188 lines
6.2 KiB
Text
188 lines
6.2 KiB
Text
re2c Version 0.10.5
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------------------
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Originally written by Peter Bumbulis (peter@csg.uwaterloo.ca)
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Currently maintained by:
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Dan Nuffer <nuffer at users.sourceforge.net>
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Marcus Boerger <helly at users.sourceforge.net>
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Hartmut Kaiser <hkaiser at users.sourceforge.net>
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The re2c distribution can be found at:
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http://sourceforge.net/projects/re2c/
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re2c has been developed and tested with the following compilers on various
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platforms in 32 bit and 64 bit mode:
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- GCC 3.3 ... 4.1
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- Microsoft VC 7, 7.1, 8
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- Intel 9.0
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- Sun C++ 5.8 (CXXFLAGS='-compat5 -library=stlport4')
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- MIPSpro Compilers: Version 7.4.4m
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GCC 2.x and Microsoft VC 6 are not capable of compiling re2c.
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Building re2c on unix like platforms requires autoconf 2.57 and bison (tested
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with 1.875 and later). Under windows you don't need autoconf or bison
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and can use the pregenerated files.
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You can build this software by simply typing the following commands:
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./configure
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make
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The above version will be based on the pregenerated scanner.cc file.
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If you want to build that file yourself (recommended when installing
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re2c) you need the following steps:
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./configure
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make
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rm -f scanner.cc
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make install
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Or you can create a rpm package and install it by the following commands:
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./configure
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make rpm
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rpm -Uhv <packagedir>/re2c-0.10.5-1.rpm
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If you want to build from CVS then the first thing you should do is
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regenerating all build files using the following command:
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./autogen.sh
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and then continue with one of the above described build methods. Or if you
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need to generate RPM packages for cvs builds use these commands:
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./autogen.sh
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./configure
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./makerpm <release>
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rpm -Uhv <packagedir>/re2c-0.10.5-<release>.rpm
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Here <realease> should be a number like 1. And <packagedir> must equal
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the directory where the makerpm step has written the generated rpm to.
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If you are on a debian system you can use the tool 'alien' to convert rpms
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to debian packages.
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When building with native SUN compilers you need to set the following compiler
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flags: CXXFLAGS='-g -compat5 -library=stlport4'.
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If you want to build re2c on a windows system you can either use cygwin and one
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of the methods described above or use Microsoft Visual C .NET 2002 or later
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with the solution files provided (re2c.sln for 2002/2003 and re2c-2005.sln for
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version 2005). re2c cannot be built with Microsoft Visual C 6.0 or earlier.
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re2c is a great tool for writing fast and flexible lexers. It has
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served many people well for many years. re2c is on the order of 2-3
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times faster than a flex based scanner, and its input model is much
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more flexible.
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For an introduction to re2c refer to the lessons sub directory.
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Peter's original version 0.5 ANNOUNCE and README follows.
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--
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re2c is a tool for generating C-based recognizers from regular
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expressions. re2c-based scanners are efficient: for programming
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languages, given similar specifications, an re2c-based scanner is
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typically almost twice as fast as a flex-based scanner with little or no
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increase in size (possibly a decrease on cisc architectures). Indeed,
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re2c-based scanners are quite competitive with hand-crafted ones.
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Unlike flex, re2c does not generate complete scanners: the user must
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supply some interface code. While this code is not bulky (about 50-100
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lines for a flex-like scanner; see the man page and examples in the
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distribution) careful coding is required for efficiency (and
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correctness). One advantage of this arrangement is that the generated
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code is not tied to any particular input model. For example, re2c
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generated code can be used to scan data from a null-byte terminated
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buffer as illustrated below.
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Given the following source
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#define NULL ((char*) 0)
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char *scan(char *p)
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{
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#define YYCTYPE char
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#define YYCURSOR p
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#define YYLIMIT p
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#define YYFILL(n)
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/*!re2c
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[0-9]+ {return YYCURSOR;}
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[\000-\377] {return NULL;}
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*/
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}
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re2c will generate
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/* Generated by re2c on Sat Apr 16 11:40:58 1994 */
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#line 1 "simple.re"
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#define NULL ((char*) 0)
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char *scan(char *p)
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{
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#define YYCTYPE char
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#define YYCURSOR p
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#define YYLIMIT p
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#define YYFILL(n)
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{
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YYCTYPE yych;
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unsigned int yyaccept;
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if((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
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yych = *YYCURSOR;
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if(yych <= '/') goto yy4;
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if(yych >= ':') goto yy4;
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yy2: yych = *++YYCURSOR;
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goto yy7;
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yy3:
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#line 9
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{return YYCURSOR;}
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yy4: yych = *++YYCURSOR;
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yy5:
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#line 10
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{return NULL;}
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yy6: ++YYCURSOR;
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if(YYLIMIT == YYCURSOR) YYFILL(1);
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yych = *YYCURSOR;
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yy7: if(yych <= '/') goto yy3;
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if(yych <= '9') goto yy6;
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goto yy3;
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}
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#line 11
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}
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Note that most compilers will perform dead-code elimination to remove
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all YYCURSOR, YYLIMIT comparisions.
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re2c was developed for a particular project (constructing a fast REXX
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scanner of all things!) and so while it has some rough edges, it should
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be quite usable. More information about re2c can be found in the
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(admittedly skimpy) man page; the algorithms and heuristics used are
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described in an upcoming LOPLAS article (included in the distribution).
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Probably the best way to find out more about re2c is to try the supplied
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examples. re2c is written in C++, and is currently being developed
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under Linux using gcc 2.5.8.
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Peter
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--
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re2c is distributed with no warranty whatever. The code is certain to
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contain errors. Neither the author nor any contributor takes
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responsibility for any consequences of its use.
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re2c is in the public domain. The data structures and algorithms used
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in re2c are all either taken from documents available to the general
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public or are inventions of the author. Programs generated by re2c may
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be distributed freely. re2c itself may be distributed freely, in source
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or binary, unchanged or modified. Distributors may charge whatever fees
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they can obtain for re2c.
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If you do make use of re2c, or incorporate it into a larger project an
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acknowledgement somewhere (documentation, research report, etc.) would
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be appreciated.
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Please send bug reports and feedback (including suggestions for
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improving the distribution) to
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peter@csg.uwaterloo.ca
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Include a small example and the banner from parser.y with bug reports.
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