m4 ./ChangeLog ./TODO m4/Makefile.am m4/builtin...

[Gary V. Vaughan]

CVSROOT:        /cvsroot/m4
Module name:    m4
Branch:         
Changes by:     Gary V. Vaughan <address@hidden>        03/06/16 06:43:45

Modified files:
        .              : ChangeLog TODO 
        m4             : Makefile.am builtin.c m4module.h m4private.h 
                         macro.c module.c symtab.c utility.c 
        modules        : evalparse.c gnu.c load.c m4.c 
        src            : freeze.c m4.h main.c stackovf.c 
Added files:
        m4             : m4.c 

Log message:
        Begin work on lifting the curse of the global variables.  To start
        with create a `struct m4' context container, and replace
        `m4__symtab' with `context->symtab' throughout.  This means
        initialising a context container in main, and adjusting many
        functions between main and the module entry points so that the
        container gets passed through.  It would have been nice to
        defer this until after 1.5, but it has a major effect on the
        user's module writing ABI, so it needs to be addressed now - at
        least in the areas that impact the ABI.  An interrelatated change
        in the symtab API removes the dependency on a global symbol table,
        and instead focuses on a passed table (from the context
        container).
        
        * TODO: Reminders for finishing context functionality.
        * m4/Makefile.am (libm4_la_SOURCES): Add m4.c.
        * m4/m4.c: New file. Manage new struct m4 objects to eliminate
        global variables and eventually allow m4 to be reentrant.
        * m4/m4private.h (m4): Define the new structure here...
        (M4_SYMTAB, m4_get_symtab): ...so we can have fast accessors that
        don't carry the overhead of a function call.
        * m4/m4module.h: Prototype extern functions from m4/m4.c.
        (m4): Declare type for new struct m4 objects.
        (M4SYMTAB): User macro to ease finding the symbol table for the
        current context for module developers.
        (m4_symbol_token): Renamed to m4_symbol_set_token which contains a
        verb.
        (M4_BUILTIN, m4_builtin_func, M4_BUILTIN_HANDLER)
        (m4_builtin_define, m4_builtin_pushdef, m4_builtin_table_install)
        (m4_call_macro, m4_dump_symbols, m4_expand_input)
        (M4_FINISH_HANDLER, M4_INIT_HANDLE, m4_macro_define)
        (m4_macro_pushdef, m4_macro_table_install, m4_module_load)
        (m4_module_unload, m4_process_macro, m4_symbol_set_token): Add an
        m4* context parameter. Changed definitions and all callers.
        (m4_symtab): Alias for m4_hash to decouple the
        m4_symtab api from m4_hash.
        (m4_symtab_apply, m4_symtab_apply_func): Use m4_symtab instead of
        m4_hash.
        (m4_symtab_create): New function to return an initialised
        m4_symtab.
        (m4_symtab_delete): New function to delete an m4_symtab's memory.
        (m4_symbol_define, m4_symbol_delete, m4_symbol_lookup)
        (m4_symbol_popdef, m4_symbol_pushdef): Add an m4_symtab parameter
        instead of simply using the global m4__symtab.  Changed
        definitions and all callers.
        * m4/m4private.h (m4__symtab_remove_module_references): Ditto.
        * m4/symtab.c (m4__symtab_init, m4__symtab_exit): Removed.
        * src/main.c (main): Create a context and use that instead of the
        former global m4__symtab.

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/ChangeLog.diff?tr1=1.174&tr2=1.175&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/TODO.diff?tr1=1.9&tr2=1.10&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/m4.c?rev=1.1
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/Makefile.am.diff?tr1=1.15&tr2=1.16&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/builtin.c.diff?tr1=1.17&tr2=1.18&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/m4module.h.diff?tr1=1.45&tr2=1.46&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/m4private.h.diff?tr1=1.20&tr2=1.21&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/macro.c.diff?tr1=1.24&tr2=1.25&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/module.c.diff?tr1=1.18&tr2=1.19&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/symtab.c.diff?tr1=1.34&tr2=1.35&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/m4/utility.c.diff?tr1=1.24&tr2=1.25&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/modules/evalparse.c.diff?tr1=1.6&tr2=1.7&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/modules/gnu.c.diff?tr1=1.19&tr2=1.20&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/modules/load.c.diff?tr1=1.8&tr2=1.9&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/modules/m4.c.diff?tr1=1.38&tr2=1.39&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/src/freeze.c.diff?tr1=1.25&tr2=1.26&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/src/m4.h.diff?tr1=1.11&tr2=1.12&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/src/main.c.diff?tr1=1.37&tr2=1.38&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/m4/m4/src/stackovf.c.diff?tr1=1.9&tr2=1.10&r1=text&r2=text