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-*- indented-text -*-
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USER VISIBLE CHANGES TO SID
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===========================
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Thu Feb 29 13:38:20 1996 Steve Folkes (smf@rivers.dra.hmg.gb)
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* Added support for an unreachable code macro (instead of a comment) in
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the C output languages.
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Fri Jul 22 14:32:00 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* FROZE VERSION 1.8.
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Tue Jul 19 14:05:20 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added assignment as an alternative to identity binding.
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Thu Jul 14 15:19:08 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added initialisers for non local variables.
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Fri Jul 1 14:09:02 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added support for non local variables within rules.
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* FROZE VERSION 1.7.
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Wed Jun 22 14:01:08 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added support for language specific options. Added options to control
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prototyping, use of numeric identifiers and casting of substituted
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parameters for C output language.
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Thu Jun 16 15:41:59 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added support for call by reference and action parameter mutation
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information.
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Fri May 27 13:33:04 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Changed the format of the C definition file to provide a parameter
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assignment operation (this should have been in from the start for
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consistent semantics). Also, the prefix section, maps section and all
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three assignment operation sections are now optional.
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Thu May 26 09:35:31 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Improved error messages. Made dump file be updated with information
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from the phase that failed in the case of an error (this is not always
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useful though - the grammar may be in a useless state after a failed
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transform; left recursion elimination is particularly bad for this).
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Tue May 17 15:30:33 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added a stricter ANSI C language that uses numeric identifiers to keep
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the identifier length below 32 characters.
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* FROZE VERSION 1.6.
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Mon May 16 15:43:04 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Changed the syntax of the input files so that the grammar looks more
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like a conventional programming language. Removed basics. Added a
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header file to the C language output.
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Wed Apr 27 14:41:48 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added "--show-errors" option to show the error table status, and a
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"--help" option to show the command line syntax.
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* FROZE VERSION 1.5.
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Tue Apr 26 12:26:53 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Changed command line syntax to be compatible with the TDF linker.
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Mon Apr 25 12:23:22 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* FROZE VERSION 1.4.
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Mon Mar 28 15:17:20 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added "#line" directives to header and trailer. Ensured that there is
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always a newline at the end of a code block.
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Fri Mar 11 11:36:25 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added support for anonymous rules and in alternative exception
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handlers. Fixed cycle detection routine used in needed function
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computation.
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* FROZE VERSION 1.3.
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Tue Mar 8 17:56:17 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Changed syntax of code blocks in action file. SID now inlines all
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actions, basics, assignments etc. and performs the substitutions.
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Substitutions allow for identifier and label substitution, as well as
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exception raising.
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Fri Mar 4 17:28:52 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Put name identifiers in a separate namespace. Stopped it being an
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error if the "-version" switch is used with no files specified.
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Wed Mar 2 17:23:47 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added a test mode language.
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* FROZE VERSION 1.2.
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Tue Mar 1 17:46:41 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added exception handling instead of old error reporting mechanism.
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Fri Feb 18 15:12:20 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added option of inlining rules that only contain basics. Changed
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output routines, so that parameters and results of inlined functions are
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substituted, rather than created and assigned to.
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Thu Feb 17 16:33:47 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Changed identifier prefixes. Made grammar printing mark inlinable
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rules with a '+'.
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Wed Feb 16 17:55:25 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Added predicate support. Improved factoring to allow alternatives
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with the same dataflow, but different names to be factored. Allowed
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types to be defined that were only the result types of terminals.
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Stopped rules being declared as entry points to the grammar multiple
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times.
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Fri Feb 4 16:54:38 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Fixed the cycle detection routines used in tail recursion detection.
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* FROZE VERSION 1.1.
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Wed Feb 2 17:20:07 1994 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Fixed the cycle detection routines used in left recursion detection.
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Fixed bug in outputting code for see through alternatives. Sorted error
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lists to make comparisons easier. Modified grammar printing to mark
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tail calls.
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Wed Dec 22 11:42:50 1993 Steve Folkes (smf@arrow.dra.hmg.gb)
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* Initial version of the new sid. Adds dataflow and marginally improved
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error handling to the original version of sid. Also fixes some bugs in
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the algorithms used in the earlier version of sid.
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* FROZE VERSION 1.0.
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