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of different parsers having different YYSTYPE unions that they want to use with it. I defined a new union core_YYSTYPE that is just the (very short) list of semantic values returned by the core scanner. I had originally worried that this would require an extra interface layer, but actually we can have parser.c's base_yylex (formerly filtered_base_yylex) take care of that at no extra cost. Names associated with the core scanner are now "core_yy_foo", with "base_yy_foo" being used in the core Bison parser and the parser.c interface layer. This solves the last serious stumbling block to eliminating plpgsql's separate lexer. One restriction that will still be present is that plpgsql and the core will have to agree on the token numbers assigned to tokens that can be returned by the core lexer. Since Bison doesn't seem willing to accept external assignments of those numbers, we'll have to live with decreeing that core and plpgsql grammars declare these tokens first and in the same order. |
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| configure | ||
| configure.in | ||
| COPYRIGHT | ||
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| README | ||
| README.CVS | ||
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Changes between all PostgreSQL releases are recorded in the file HISTORY. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.