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3cbfe485e4
Apparently some primordial version of Spencer's engine needed cdissect() and child functions to be able to continue matching from a previous position when re-called. That is dead code, though, since trivial inspection shows that cdissect can never be entered without having previously done zapmem which resets the relevant retry counter. I have also verified experimentally that no case in the Tcl regression tests reaches cdissect with a nonzero retry value. Accordingly, remove that logic. This doesn't really save any noticeable number of cycles in itself, but it is one step towards making dissect() and cdissect() equivalent, which will allow removing hundreds of lines of near-duplicated code. Since struct subre's "retry" field is no longer particularly related to any kind of retry, rename it to "id". As of this commit it's only used for identifying a subre node in debug printouts, so you might think we should get rid of the field entirely; but I have a plan for another use. |
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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/.