The Tower Bridge in Sacramento, California GOLD Parsing System
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The following is a list of project updates from 2004.

December 18, 2004

New! GOLD Parser Builder 2.5 was released

The new version of the GOLD Parser Builder contains the following changes:

  • The functionality of Program Templates was expanded significantly. The templates contain a number of new tags and blocks that allow the entire contents of the Symbol Table, Rule Table, Character Set Table, DFA Table and LALR Table to be exported.
  • The 'Create a Skeleton Program' window now displays a 'scanning' message. When the window is first loaded, it scans the contents of the \templates folder. This can take a few moments.
  • The format of the file created by the 'Export to XML' tool was modified slightly.
  • Fixed the double-paste bug. When text was pasted into the Grammar Editor, it would be pasted twice.

You can get a copy from the Builder Download page.

Updated the command line version of the Builder

The "createskelprog" program was modified to support the new Program Template features. The remainder of the programs were also recompiled - just in case I fixed a bug and forgot about it. The version of each program is now 2.5.

Updated the online documentation

The online documentation was updated to reflect to new features that were added to Program Templates. In addition, the overall look and feel of the documentation was improved.

December 13, 2004

Updated! Eylem Ugurel submitted a new version of his Engine.

The new version of his engine is now called "LUDO" (Language for Unified Design and Operation). The download includes the source code for his LUDO Scripting Language.

Updated! Robert van Loenhout  submitted a new version of the Calitha Engine.

This new version of the "Calitha" Engine now supports error recovery. If a parse error occurs, a new token can be pushed onto the stack at runtime.

December 6, 2004

The Documentation was updated.

The look of the documentation was updated and few flaws were fixed. In particular, the documentation for the CGT file format contained a number of confusing errors.

Special thanks to Jens Olesen for finding the flaws.

November 22, 2004

New! GOLD Parser Builder 2.4.2 was released

The new version of the GOLD Parser Builder contains a number of improvements to the GUI and the overall performance of the system. The major changes are as follows:

  • The YACC to GOLD translator was integrated into the Builder. This is a simple utility that translates a grammar written in the YACC Meta-Language to the GOLD Meta-Language.
  • The Edit Menu now contains both a Find and Replace option.
  • The Test Window was improved slightly. When a 'parse action' is clicked, the description is now displayed at the bottom of the window.
  • Table generation was broken into two steps. Beforehand, the 'Next' button simply displayed 'Compute Tables'.  When clicked both the LALR and DFA tables were constructed - one after another.
  • The GUI library used by this application was updated. The overall efficiency of the library was improved. This includes both speed and memory requirements.
  • The Export to Formatted Text output was modified. The Log is now printed before any of the other tables. The file also contains a simple header message.
  • Fixed LALR and DFA State Browser scrollbars. The scrollbar was acting strangely when it was first clicked.

You can get a copy from the Builder Download page.

Made some website changes

The 'Changes by Version' caption in the menus was changed to 'Revision History' to match the terminology used in the Builder application and the webpage itself.

Updated the documentation

The online and downloadable documentation for the Builder was updated. The changes were rather minor.

Updated the Smalltalk IV and Commodore BASIC grammars

Both of these grammars had very minor errors - mainly to do with the descriptions.

Fixed the LALR Concept Page

The size of the HTML tables were in error. As a result, the page did not resize correctly.

November 12, 2004

Updated the Documentation

I forgot to update the online documentation for the new version of the Command Line Builder. I also updated the downloadable documentation.

November 1, 2004

Nikolaos Kavvadias submitted the grammar for Oberon-00

"Oberon-00 is a simple programming language proposed in [Wirth98] as a simple example of a common language that can be used for hardware and software compilation. Such language could be used for research purposes in the field of high-level synthesis (HLS) and as a testbed for hardware-software codesign. Oberon-00 is derived as a hardware-friendly subset of Oberon."

You can download a copy from the Grammar Download Page

The format of the Grammar Download page was modified

The Programming Languages table was broken into "Programming Languages" and "Academic Programming Languages" tables.

October 29, 2004

The command-line version of the Builder was updated - again!

I have updated the arguments of the command line version of the Builder. The new format:

goldbuilder [options] Grammar [CGT-file] [Log-File]

is easier to use than the last version. The "options" section contains a new +export flag that will cause the system to export the tables to the log file.

October 28, 2004

The command-line version of the Builder was updated

The command-line version of the Builder is essentially a collection of three Windows applications that are designed to run without a user interface. When each program is started from the command line, it executes in the background. The command-line, however, continues immediately - regardless if the program has terminated.

This can be quite confusing (and annoying) for someone who starts the programs and expects the command-line interface to wait. This was an oversight on my part.

I renamed each of the command-line programs and replaced the original name with a batch file. When the batch file is started, it will execute  the associated program with the "start /wait" batch command. The system will properly wait for execution to finish.

October 23, 2004

New! The grammar for Brainf#ck was added

As legend states, the Brainf#ck Programming Language (also called BF by those not wanting to curse) was created by Urban Mller in 1993.  The language was designed, in part, so Mller could create the smallest  compiler ever. The first BF compiler was written for the Commodore Amiga  OS 2.0 and was only 240 bytes in size. The BF Programming Language only consists of 8 different instructions, an array and a pointer.

October 20, 2004

New! The grammar for ALGOL 60 was added

ALGOL is, by far, the most influential programming language developed to date. Although is did not achieve mass use, a large number of syntactic and semantic principles and concepts were developed and incorporated into the language. As a result, ALGOL is considered the main reference language in computer science.

You can get a copy from the Grammar Download page.

October 14, 2004

New! A YACC to GOLD Translator was released

This is a simple utility program that will translate a grammar written using the YACC Meta-Language to the GOLD Meta-Language.

The program will create the "hidden" rules that are implied with the %left and %right YACC directives. The %prec directive, which is primarily used for unary operators, is also supported. Currently, all other YACC directives such as embedded code, %union, %type, etc... are parsed by this utility program, but are discarded.

You can get a copy from the Builder Download page.

The YACC grammar was updated

The grammar that was posted on October 4th has a few minor flaws. You can download a copy from the Grammar Download Page

Added a link

I added a link on Links and Resources page to the Textpad website. Textpad is an easy-to-use and quite versatile text editor. The application supports syntax highlighting and Unicode, and has a huge number of editing features.

October 4, 2004

Added the grammar for the YACC compiler-compiler.

One of the oldest and most respected parsing engine generators available to  developers is YACC. Like "vi" "grep" and "awk", this software is considered  the de facto standard in the UNIX world. YACC, which is an acronym for Yet Another Compiler-Compiler, was developed by Stephen C. Johnson at AT&T. YACC can be used to create parsers using the C and C++  programming languages.

You can download a copy from the Grammar Download Page

October 2, 2004

New! GOLD Parser Builder 2.4.1 was released

  • Huge Addition! The LALR and DFA state windows were improved. Beforehand, both windows simply contained a listing of each state. This was hard to interpret since moving from state to state was done by scrolling. Both of the windows are now state 'browsers'. Links between states can be followed by double-clicking. I also added 'back' and 'forward' history buttons.
  • The log window is linked to the DFA and LALR state windows. If you double-click on a log item about a DFA or LALR state, it will open that state for you.
  • The text displayed in the LALR states for 'Reduce' actions was changed. The new format is designed to be easier to read. Beforehand, a reduction of rule 3 would be read 'Reduce 3'. Now it reads 'Reduce Rule 3'.
  • The style of the webpage created by Export Webpage Window was improved. The new format looks slightly better - still not be best, but definitely not the worst! :-).
  • Fixed a bug in the Export Webpage Window. The color information was not being written correctly to the file. As a result, the color styles were in error and the resulting tables were simply black.
  • Fixed a minor bug in the Test Window. The Test Window normally disables the 'Parse' button if a problem is found when constructing the parsing tables. Unfortunately, the button is not disabled if a problem is found in the DFA States.

You can get a copy from the Builder Download page.

Updated the Documentation

I added a very simple explanation of Shift-Reduce and Reduce-Reduce conflicts. The downloadable documentation was also updated.

September 21, 2004

New! GOLD Parser Builder 2.4 was released

A new version fo the GOLD Parser Builder was just released. The new version contains a number of new tools and performance improvements. The changes include the following:

  • Major Update! The system will now automatically fix Shift-Reduce conflicts.
  • Added a 'Tip of the Day' window.
  • The grammar can now be exported to YACC.
  • I added some miscellaneous links to the Help Menu. These links include the Unicode Consortium and California State University, Sacramento.
  • Some internal changes were made to attempt to solve the mysterous Error 91 bug.
  • The semantic checks for grammars were enhanced. The system now better checks if all rules and terminals are defined properly.
  • Windows are displayed more efficiently. The system only reloads information into windows if the data has changed. Beforehand, anytime a window was 'displayed', information was reloaded.
  • The icons in the System Log were changed. The icons for 'Critical Error', 'Success', 'Warning' and 'Information' were replaced with better variants.

You can get a copy from the Builder Download page.

September 15, 2004

I added a link to PDF995.com

PDF995 is a free PDF converter which installs on your computer as a virtual printer. As a result, creating PDFs is as easy as printing a document!

I added a link to Planet-Source-Code.com

Planet Source Code is an online database containing a massive amount of free source code. The source is submitted by developers wishing feedback or wanting to help others in the development community.

September 13, 2004

New! I added copy of my Master's Project Report.

I recently converted the document, called "Design and Developement of a Grammar Oriented Parsing System", into the popular PDF format. The document is a total of 527 pages long  About 100 pages of which contain a side-by-side comparison of LALR states created by both YACC and GOLD for the ANSI C programming language.

You can get a copy on the Download page.

Special thanks to Masa Omae for converting the file to PDF.

September 9, 2004

New! I added a sample project by Matt Housell

Mat Housell submitted a sample project using the Calitha Engine. When a grammar is opened, the program does some syntax highlighting and creates a tree view.

August 27, 2004

I cleaned up the server files

I have removed all the useless "_vti_cnf" directories from the server. I may have, however, inadvertently broke something. If you find any pages that are not working correctly, please e-mail me.

August 26, 2004

I finally finished my Master's Project Report!

On Augest 24th 2004, I finally submitted the final version of my Master's Project Report to the College of Engineering & Computer Science at California State University, Sacramento.

The top of the project is - as you probably guessed - this parsing system. I will put a PDF of the report on this website when I get a chance.

Website updates should now go more smoothly.

I created a real simple utilty that can be used to upload websites to the Internet. I am currently using an good-ole-fashioned FTP program to manually copy each file to the server. Naturally, this can be a very long and tedious process.

The new program maintains a "sync" log of all files. It then selects those files which have changed and FTP's them to the server. The best part is that I can avoid those superfluous "_vti_cnf" directories!

A few of the Concept Pages were updated.

The pages about Deterministic Finite Automata, Backus-Naur Form, LALR Parsing and Regular Expressions were updated with proper terminology.

August 19, 2004

Great News! A new C# Engine is now available.

Vladimir Morozov created a new implementation of the Engine using both Marcus Klimstra's C# Engine and Alexender's Rai Delphi Engine as templates. It has the following features: the grammar properties and tables are immutable, the parser uses special transition vectors for DFA and LALR processing to make them faster, the parser object has to be created for each parsing string, the parser collects all comments in Hashtable with source line number as an index, the engine uses a resource file for error messages to support multiple languages.

You can download a copy on the Engine Download page.

New! A modified version of Klimstra's C# Engine source was submitted.

Adrian Moore modified Marcus Klimstra's Engine so that the Compiled Grammar Table file can be an embedded resource in the assembly's manifest. As a result, the Reduction, LookAheadReader, GrammarReader and GoldParser objects were modified. He also submitted a sample project.

You can download a copy on the Engine Download page.

Update! Robert van Loenhout updated his popular Calitha C# Engine.

The new version has a number of modifications and enhancements. These include: corrects the camel/pascal case mistake in creation methods, includes strongly signed binaries, source includes different general purpose test key for building StronglyNamedAssembly solution, and supports fast multi-threaded creation of tokenizers and parsers.

You can download a copy on the Engine Download page.

The website was restructured.

The folder hierarchy of the website was restructured so that information is better organized. This new structure is better prepared for the eventual revamp of the Engine Pages.  For the most part, this will be invisible to website visitors.

The Unicode Page was modified

I forgot to give special thanks to Robert van Loenhout for his help.

August 11, 2004

I added some links.

I added a few links from different implementations of the Engine to their respective websites.

Updated the "Quick Menu" on the Engine Download page.

The new table is hopefully easier to use and for more aesthetically appealing. I also added a very simple version to the Builder Download page.

Fixed a link to the Java Engine Tutorial

The link that pointed to the Tutorial for the Java Engine was broken. The link now points to a local copy of the file.

Added the Commodore 64 Font

Download the Commodore 64 Font!Okay I admit, a True Type font has nothing to do with either parsing or grammars. However, I am very fond of the Commodore 64.

I created the original font a long time ago and just recently cleaned it up and added a number of new glyphs. I put a copy on the Grammar Download page.

July 25, 2004

New! Added the grammar for VB Script.

Vladimir Morozov submitted a grammer for the Visual Basic Scripting Language - VB Script. This is a version of Microsoft Visual Basic that can be used in webpages or for scripting tasks in Windows.

Updated the Unicode page.

The Concept Page about the Unicode Character Set was updated with two examples of extended ASCII. I added the character charts for both IBM-PC Extended ASCII and Mattel Aquarius Extended ASCII.

Few people are familiar with the Mattel Aquarius, and for good reason. It has the dubious honor of being known as the worst home computer of all time. This system was completely out-matched by all other home computers of 1984 - and even those older systems. It was only produced for 3 months and lead to the financial ruin of Mattel Electronics.

In other news ...

Work has started on version 2.4 of the GOLD Parser Builder. The new version will contain a number of minor enhancements and hopefully better compatability with Japanese and Korean versions of the Windows Operating System.

June 27, 2004

The Engine Download page was updated

The updated version is hopefully easier to navigate.

New! Added the grammar for PL/0

Eike Anderson submitted the grammar for PL/0. PL/0 is a simple programming language created by Niklaus Wirth in his 1976 book Algorithms + Data Structures = Programs. Essentially, the grammar is a subset of Pascal and Modula-2 - both of which Niklaus Wirth created.

June 19, 2004

The Engine Download page was updated

The updated version is hopefully easier to navigate.

June 7, 2004

New! GOLD Parser Builder 2.3 was released

  • Added a New Grammar Wizard. The Wizard allows you to create a basic grammar for a number of common programming language attributes.
  • Added two new variables to the Program Template format. These two new variables, %ID.Padded% and %Value.Padded%, allow the developer to specify identifiers and values that are right-padded with spaces such that each has the same width.
  • Program Templates are now more versatile. The identifier tags, such as ##ID-CASE, can appear anywhere in the template. Beforehand, these tags could only appear at the start of the template. With this change, the developer can create different symbol and rule lists using identifiers with different formats. In addition, this information was removed from the Create Skeleton Program window since a single displayed value is meaningless.

You can get a copy from the Builder Download page.

Great News! The Engine is now available in wxWidgets C++

Jorgen Bodde released an implementation of the GOLD Engine for wxWidgets (http://www.wxwidgets.org) which is a cross platform GUI toolkit. The source was ported from the Alexandre Rai engine (Delphi 5 version) to C++ and runs under Linux and Windows (MacOS and Solaris should also work).

You can download a copy on the Engine Download page.

Update! Robert van Loenhout has updated his C# Engine

Robert van Loenhout updated his popular Calitha Engine and updated the online documentation. The new version add the TrimReduction property that is found in the ActiveX Engine.

Update! Dmitry Gazko has updated his Java Programming Language grammar

This grammar is based on a partial conversion of Sun Java 1.0-2.0 specification. You can download a copy from the Grammar Download Page

Redesigned the Engine Download page

The Engine Download page was coming complex and confusing. As a result, each of the different implementations of the GOLD Engine were organized into different tables.

May 17, 2004

Updated the Documentation - again...

The Documentation was updated again. The syntax diagrams used in the Meta-Language documentation were incorrect.

May 16, 2004

Updated the Documentation

The Documentation for the GOLD Meta-Language was updated to include a description and example of Virtual Terminals. The downloadable version of the documentation was also updated.

May 15, 2004

New! GOLD Parser Builder 2.2.1 was released

A new version of the GOLD Parser Builder is now available. This version improves the GUI and fixes a bug.  The changes include the following:

  • Added a Most Recently Used (MRU) section to the file menu. This feature is found in most applications. The most recently used files are displayed at the bottom of the File Menu.
  • Made some revisions to the GUI library.
  • Fixed a bug in the DFA table construction. Kleene Stars were not functioning correctly if applied to a literal string (e.g. 'bug'*). Special thanks to Rick Sprague for finding this error.

You can get a copy from the Builder Download page.

The Command-Line version of the Builder was updated

The same bug that affected the Windows version of the GOLD Parser Builder, also affected the command-line version. All three of the command-line programs were updated and some additional features were added. The Documentation was also updated.

You can get a copy from the Builder Download page.

The News pages were updated.

The New Archive was organized into "2003" and "2002" pages. Naturally, I doubt anyone will ever read these, but it is important to keep a history.

May 12, 2004

Added a downloadable version of the GOLD Builder Documentation

The GOLD Parser Builder normally opens the online documentation when it is selected from the Help menu. Since the documentation changes from time to time, this makes sure that the latest version is always displayed.

However, there are cases where the developer may want to look at the documentation without connecting to the Internet. This file will solve this problem.

Added the grammar for Cascading Style Sheets

Cascading Style Sheets was originally proposed in 1994 by Hakon Wium Lie during "Mosaic and the Web" conference in Chicago.

Shortly afterwards, Hakon Wium Lie teamed up with Bert Bos who was developing a web browser called "Argo". Together the format of the first Cascading Style Sheets was developed and, with Thomas Reardon of Microsoft, was submitted to the W3C Committee in late 1996.

You can download a copy from the Grammar Download Page

May 11, 2004

Great News! The GOLD Parser Engine is now available in Python!

Milosz A. Krajewski developed a pure implemention the GOLD Parser Engine using the Python Programming Language. You can download a copy on the Engine Download page.

New! Dmitry Gazko has submitted a grammar for the Java Programming Language

This grammar is based on a partial conversion of Sun Java 1.0-2.0 specification. You can download a copy from the Grammar Download Page

New! Christian Beaumont submitted a grammar he wrote called "Pokchi/J"

This grammar defines a JavaScript like language with some C# like extensions. You can download a copy from the Grammar Download Page

Changed the website bullet used for "Documentation"

The new bullet is a simple purple-ish document with a question mark.

April 28, 2004

New! GOLD Parser Builder 2.2 was released

A new version of the GOLD Parser Builder is now available. This version greatly improves performance, fixes a few bugs and adds a few minor features. The changes include the following:

  • Added 'Virtual' terminals. These terminals are specified in the "Virtual Terminals" parameter. The system will enter these terminals into the symbol table, but they will not be entered into the Deterministic Finite Automata. As a result, the terminals will not be recognized by the tokenizer, but can, instead, be created by a specialized version of the Engine or by the developer. This can help developers parse languages which are not context free - such as Python.
  • Added a few new options to the exporting to formatted text or web pages. You can now exclude LALR lookahead sets and unstarted configurations when exporting the parse tables.
  • Added a 'Trim Reductions' button to the Test Window toolbar. Beforehand, this option could only be changed from the main menu.
  • The Test Window can now export the parse action table. Before, the test window would only export the parse tree.
  • The acronym for 'GOLD' was changed again. The new acronym stands for Grammar Oriented Language Developer. This should be the last time the acronym is changed.
  • Fixed a bug when creating skeleton programs. If the Symbol or Rule prefix was blank, the system was adding the text 'Space'. This made if it difficult to create constant names without prefixes.
  • Possibly fixed a bug concerning how the toolbar icons are displayed. On some systems, the toolbars were failing to remove the mask color (color that is transparent) on the icons. I made some revisions to the GUI library that might fix this. Time will only tell, though.

You can get a copy from the Builder Download page.

New! A command line version of GOLD Builder was released

This is a command line version of the Windows 32-bit application. The three major features of the Builder Application: Compiled Grammar Table file generation, Skeleton Program Creation and Grammar Testing, were implemented using separate executables.

You can get a copy from the Builder Download page.

New! A new version of the  ActiveX implementation of the Engine is available

The new version of the ActiveX DLL has a number of performance and usage enhancements. In particular, it is now able to read UTF-16 encoded text files. A new method, CurrentColumn was also added.

Update! The online documentation was updated

The look and feel of the documentation was updated for the Builder, Compiled Gramamr Table files,  Program Templates and the ActiveX Engine

Documentation for the command line version of the Builder was also added.

Updated the 'GOLD Meta-Language' grammar

The grammar used to parse a grammar written in the GOLD Meta-Language was updated. The updated file contains better notation and terminology.

Updated the ANSI C grammar

The ANSI C grammar had a number of flaws. The new version successfully parses actual source programs.

April 22, 2004

Project Update

I should be able to get back to work on creating version 2.2 of the GOLD Parser Builder and responding to e-mails (I am very behind). I am almost complete with my Master's Thesis on GOLD.

The next version of the Builder will contain "virtual" terminals as well as a number of improvements.

March 7, 2004

Updated the LISP grammar

The LISP grammar was not correct - not even close to being correct.

February 25, 2004

Great News! The GOLD Parser Engine is now available in ANSI C.

Justim Holmes has created a version of the GOLD Parser Engine using pure ANSI C. The Parse() method returns the actual rule reduced rather than a result code. -1 is returned for a parse error.He also included a program template and example program.

You can download a copy on the Engine Download page.

Update! The Visual Basic .NET grammar was modified

Vladimir Morozov fixed a few flaws in the Visual Basic .NET  grammar. 1. The definition for strings did not allow the double double-quote override. 2. A real literal does not need to have a   fraction if followed by an exponent. 3. Escaped identifiers can contain a null string and 4. Rem works the same as the apostrophe.

Added a grammar for Commodore PET BASIC

This version of the BASIC Programming Language was implemented on the Commodore 64. I wrote this grammar to amuse myself and to remember the fun I had on that 8-bit wonder.

Added a grammar for HTML

This grammar requires little explanation - being the dominant format used for websites. Like XML, HTML is a descendant of SGML (Standardized General Markup Language).

February 3, 2004

The website look and feel was updated - slightly

I finally made some design changes to the website - which were long overdue. Basically the "template" was changed. I hope you like the new look, because it took me forever   to change all the pages. :)

February 1, 2004

Update! Dmitry Lamdan submitted a new version of Grammar Edit

Dmitry Lamdan submitted a new version of his popular Grammar Edit application. This application contextually highlights reserved words, terminals, rules, etc... and even interactively allows the developer see which rules and terminals have been defined and those which have not yet been.

You can download a copy on the Builder Download page.

Update! Robert van Loenhout has updated his C# Engine

Robert van Loenhout updated his GOLD Parser Engine so the parser can accept a Stream object instead of a FileStream. In addition, he made some other changes to fix bugs and enhance performance. He also submitted an updated version of his detailed documentation.

You can download a copy on the Engine Download page.

A bug in the ANSI Grammar was fixed

Tom van Dijck found a bug in the grammar concerning variable initialization. The grammar did not allow variable initialization for all variables.

January 21, 2004

Added the grammar for Visual Basic .NET

Visual Basic .NET is the latest version in the long evoluation of the BASIC programming language. The Visual Basic .NET programming language  is far more "clean" and orthagonal than its predecessors. Although some of the old constructs exist, the language is far easier to read and write.

You can download a copy on the Grammar Download page.

The Visual Basic sample projects were updated.

The Visual Basic sample projects includes a rather old verison of the GOLD Parser Engine - v1.1. The file were updated with the latest version.

The source code for the Visual Basic 5 version of the Engine was updated

The source code that was on the site was for version 1.1 of the Engine.

January 19, 2004

New! GOLD Parser Builder 2.1.1 was released.

The new version of the GOLD Parser Builder contains two bug fixes and a few minor enhancements. The changes are as follows:

  • Added a browse button to the 'Create a Skeleton Program' window.
  • The behavior of the Test Window was slightly changed.
  • The system now displays the 'Working' dialog when opening a file that was dragged and dropped.
  • The shortcut key for the Test menu was changed from Alt-E to Alt-S.
  • Fixed a 'Set Constant' bug. The set constants {#xxxx) and {&xxxx} were not valid when defining terminals.
  • Fixed a bug when creating skeleton programs.
January 18, 2004

Added a link to the Links and Resources page.

I added a link in the to WorldMaker's GOLDDotNet Project. This website contains Max Battcher's fast growing selection of excellent GOLD tools. These include his new EvParser, which is a wrapper class,  and GOLDDot software, which can be used with AT&T Dot to create graphs of rules, and parse tables.

The "Description" line on the main page was changed

On the main page, the text that read "A Free, Multi-Platform, Parser Generator" was changed to "A Free, Multi-Language, Parser Generator." This is a very simple update.

January 11, 2004

New! GOLD Parser Builder 2.1 was released.

A new version of the GOLD Parser Builder is now available. This version greatly improves performance, fixes a few bugs and adds a few minor features. The changes include the following:

  • Major Update! The LALR table generation algorithm was reengineered. The old algorithm would slow down exponentially for complex grammars. The new algorithm, in some cases, is twice as fast in computing tables.
  • Two buttons were added to the Test Window. One of the buttons allows the user to display the 'Set Error Recovery Limit' value. The other button allows the user to save the parse tree.
  • The toolbar icon used for the System Log was changed. Beforehand, the icon consisted of a pencil - which was not very representative of the System Log. The new icon will hopefully work better than the last.
  • The help icon was updated. The new version is slightly better.
  • Updated the Log Window. When you click on a log item, the window will now display the title and description.

You can get a copy from the Builder Download page.

Added a grammar for AT&T Graphviz (aka Dot)

This grammar, submitted by Richard Scheider, is for a graph language from AT&T known by the names Graphviz and Dot.

January 2, 2004

New! Dmitry Lamdan submitted a specialized grammar editor!

Dmitry Lamdan submitted an excellent application designed to write grammars. The application contextually highlights reserved words, terminals, rules, etc... and even interactively allows the developer see which rules and terminals have been defined and those which have not yet been.

You can download a copy on the Builder Download page.

New! A new .NET Engine is available!

Robert van Loenhout submitted a new version of the engine for the Microsoft .NET architecture. This version was written in Microsoft C#. He also supplied full documentation for using the DLL. You can download a copy on the Engine Download page.

Updated the Downloadable Builder Documentation

The CHM file was updated to included the latest documentation such as Program Templates. The style of the documentation was updated for better readibility.

Click inline-arrow-r.gif (99 bytes)here to read the 2003 news archive.