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Revision history for Perl extension Yapp.
- original version; created by h2xs 1.18
0.01 Thu Jun 25 20:02:09 1998
0.02 Never released
0.03 Never released
0.04 Never released
- Fix installation of yapp.pl to $INST_SCRIPT
- $VERSION is now in Yapp/Driver to check compatibility
- Add debugging driver and debug option
- Bug in error recovery fixed: do not shift an $error reduction
- Add LeftValue, Curtok and Curval methods
- Add driver version compatibility check
0.05 Thu Jul 03 20:05:05 1998
- Add LeftValue, Curtok and Curval methods
0.06 Tue Jul 07 20:36:17 GMT 1998
- Error token '$error' becomes 'error' (like in yacc)
- The '$end' token becomes ''
0.07 Never released
- Default action become a separate entry in states hash
- $COMPATIBLE value changed to 0.08
- The grammar parser is now a Yapp parser module
- Comments can be either Perl (#...\n) or C /* ... */ style
- The parser accepts %type, %union and <type> constructs and
almost ignore them, except checking consistency between token
and non-terminal declarations (warnings)
- The parser now has error recovery and consistent error line numbers
- The parser now accepts "in rule" actions and generates pseudo
empty rules to reduce, named @x-y, where x is a sequential
number and y the 'dot position' in the rule for the driver
to know how many parameters to pass to semantic action sub
- Add "in rule" actions handling in Driver.pm
- Empty rhs need not be the first one anymore
- Warning if more than one empty rhs for a given lhs
0.08 Fri Jul 10 22:04:31 GMT 1998
- Changed 'print STDERR' to 'warn' in parser.
- Use of literal 'error' produces a warning and is treated as
the error token
- Add prefix 'YY' before each parser object methods to avoid
clashes with user written methods
- Renamed YYUserData to YYData (shorter and more consistent with
other methods names)
- Renamed YYLeftVal to YYSemval for same reasons
- Modified Driver.pm so Semval(-n..n) reacts like $-n..$n in yacc
0.09 Never released
- Changed test suite to 't/' style and add base tests for semantic
actions/values and associativity tests
- Check code to be (almost) Perl's -w compatible
- Updates to pod section in Yapp.pm reflecting most of those changes
0.10 Mon Jul 13 20:53:40 GMT 1998
- Cosmetic changes
0.11 Wed Jul 15 19:46:17 GMT 1998
- Renamed Yapp::Parse parameters with a leading yy
- Updated Yapp.pm pod section
0.12 Tue Jul 21 22:34:00 GMT 1998
0.13 Never released. (I'm not supersticious, but who knows...8-))
- Renaming to Parse::Yapp for better CPAN entry...
0.14 Wed Jul 29 21:43:03 GMT 1998
- Doc change: empty token is '', not undef (perl -w complains otherwise)
- Bug in _ReduceGrammar: used $ruleno instead of $#{$grammar{RULES}}
making no-terminal pointing to wrong rhs if useless rules.
0.15 Mon Aug 17 11:39:01 CEST 1998
- YappParse.yp modified to allow empty tail section (not even \n)
- YappParse.yp modified to diagnose lack of rules in grammar section
- Driver.pm has been modified so there is no performance impact at
loading when debugging is not used and to insure thread safety at
runtime
- Output.pm can now include driver code into the parser module to
make it 'standalone'
- Copyright notice in Driver has been changed to reflect its use
if included in a standalone parser
- A -s option has been added to yapp.pl to generate standalone parsers
- Usage in yapp.pl reflects this new option
- Updated Yapp.pm pod to add Standalone Parsers item
0.16 Sun Oct 25 12:36:05 CET 1998
- Output.pm modified not to use DATA handle, which seems broken on windows
systems when Parse::Yapp module is untarred and Output.pm hasn't its \n
converted to \r\n pairs.
- Added the %expect declaration, a la bison
- Updated Yapp.pm pod to reflect this new option
- The core of Parse::Yapp seems very stable now so I change the status from
alpha to beta and jump to version 0.20 directly.
0.20 Sun Dec 20 16:13:21 CET 1998
- Added YYExpect method in Parse/Yapp/Driver.pm
- Updated Yapp.pm pod to reflect this new method
- Modified Makefile.PL for using current Parse::Yapp version if recompiling
Parse/Yapp/Parse.pm from YappParse.yp ( $(PERL) -I. )
- Modified yapp.pl to add -V option and make output default to final name
of package, if -m option is specified. Usage updated.
- Added missing $@ check after eval of debugging driver.
0.21 Thu Dec 24 17:55:47 GMT 1998
- Corrected a weird bug in Lalr.pm (_SolveConflicts & _SetDefaults) about
shift/reduce conflicts on non-associative tokens
- Added a test in base.t to check non-associative conflicts and error
token handling
- Added some doc to explain YYExpect can include YYCurtok when non-associ-
ative errors happen
0.22 Wed Mar 10 17:03:39 CET 1999
- Moved Parse path tree under lib to be conformant with standard Perl
modules distributions
- Added Parse::Yapp::Options class as parent of Parse::Yapp::Grammar
to handle various options.
- As the Output method is not really 'public' yet, it now takes its
arguments as hash list, like YYParse. Can break code of people not
using the yapp.pl front-end.
Of course, its arguments are handled by Parse::Yapp::Options
- Added #line "inputfile" trace in generated grammar by default for input
source line numbers (obvious reason for adding that :-).
- Added language, linenumbers, inputfile, classname, standalone and input
options which default to ( 'Perl', 1, undef, 'Parser', 0, undef )
- Modified yapp.pl for new parameter list
- Idem for t/base.t and t/calc.t
- Modified Grammar.pm so it uses linenumbers option to know it must output
line numbers and inputfile as the filename. If inputfile is undef, then
use 'unkown'.
- Added a new flag -n to yapp.pl to disable line numbers in parser output
- Renamed yapp.pl to yapp (bored of typing .pl)
- Wrote pod for yapp frontend (so now there's a man 1 page !)
- Added article in copyright notice when using the standalone parser option
0.30 Sat Apr 3 15:36:58 CEST 1999
- Corrected a silly bug in yapp front-end, calling Output method with
inputfile parameter, which was already done with the constructor
- Change to yapp frontend so the F<*.output> file goes to the same
directory than the F<*.yp> source file
- Corrected Head method in Parse::Yapp::Grammar so it returns '' if there
is no header code, to avoid a warning with perl's -w switch
- Same for Tail method, so no line number is output if there is no trailer
code
- Corrected a bug in Grammar.pm, to make useful rules useless if their lhs
are not reachable.
0.31 Fri May 7 21:06:32 CEST 1999
- Won some milliseconds in Driver.pm by not calling an anonymous sub if
there is no semantic action: just get the first semantic value as result
- Added a patch from Andy Wardley (thanks) which allow people to specify
their own template rather than the standard one from Output.pm
- Added option C<-b> to yapp to specify a 'shebang'. If value is an empty
string, $Config{perlpath} is used.
1.00 Wed Oct 20 17:52:38 CEST 1999
- Corrected a bug in Options.pm to have it run with Perl 5.6.0
1.01 Tue Mar 28 18:50:19 CEST 2000
- In YappParse.yp, if declaring a token with %left/%right/%nonassoc and
later redefining it with token lost precedence/associativity. Now, it
emits a warning
- In Lalr.pm, _FirstSfx, incorrectly looped when epsilon was in firstset
instead of beeing nullable (this one was weird)
- In Driver.pm, check for a call to YYErrok after calling error routine
to abort error recovery and continue normal parsing
- New method YYLexer added in Driver.pm, to get a reference to the lexer
routine
- In Driver.pm, $check variable was not always cleaned up
1.02 Mon May 1 13:42:03 CEST 2000
- English corrections in README file (thanks to Donald Lancon)
- New email address
- Updated copyright boundaries
- Various cleanups in Grammar.pm and Lalr.pm
1.03 Sun Nov 5 13:14:49 CEST 2000
- In Lalr.pm, _Preds, recursivity removed
- English corrections in Parse::Yapp pod section (thanks to Julian Trudy)
- Updated copyright boundaries
- Stress test added (compile and check a full C++ grammar)
1.04 Mon Feb 12 16:46:37 CET 2001
- Bug correction in YappParse.yp _Lexer sub to accept '\\' literals
(Thanks to Denis Barbier to catch this one)
1.05 Sun Nov 4 20:32:32 CET 2001
1.06 Wed Jun 14 2017
- First Release In Over 15 Years,
How's That For Long-Term Stability?!? :-)
- Bug Fix, Unescaped Left Curly Braces { In Regular Expressions,
Fatal Since Perl v5.25.1, Minor Changes In YappParse.yp & Parse.pm
- Typo Fixes, POD Spelling & Syntax
- Copyright Assignment Documents, Desarmenien To Braswell
1.20 Wed Jun 14 2017
- Bug Fix, CPAN Version Dependencies Failure,
Enable Module Version In Parse::Yapp,
Not Just Distribution Version In Parse::Yapp::Driver
- Bump Version
1.21 Fri Aug 04 2017
- Typo Fixes, POD Spelling (thanks to Gregor Herrmann)
- Bug Fix, Missing POD Encoding (thanks to Gregor Herrmann)
1.22 Sat Nov 17 2018
- Release to the public of ported code