mirror of
https://github.com/GrammaticalFramework/gf-core.git
synced 2026-04-14 07:19:31 -06:00
59 lines
2.2 KiB
Plaintext
59 lines
2.2 KiB
Plaintext
GF 3.0
|
|
Krasimir Angelov, Björn Bringert, and Aarne Ranta
|
|
Beta release, 27 June 2008
|
|
|
|
|
|
GF Version 3.0 is a major revision of GF. The source language is a superset of the
|
|
language in 2.9, which means backward compatibility. But the target languages, the
|
|
compiler implementation, and the functionalities (e.g. the shell) have undergone
|
|
radical changes.
|
|
|
|
|
|
==New features==
|
|
|
|
Here is a summary of the main novelties visible to the user:
|
|
- **Size**: the source code and the executable binary size have gone
|
|
down to about the half of 2.9.
|
|
- **Portability**: the new back end format PGF (Portable Grammar Format) is
|
|
much simpler than the old GFC format, and therefore easier to port to new
|
|
platforms.
|
|
- **Multilingual web page support**: as an example of portability, GF 3.0 provides a
|
|
compiler from PGF to JavaScript. There are also JavaScript libraries for creating
|
|
translators and syntax editors as client-side web applications.
|
|
- **Incremental parsing**: there is a possibility of word completion when
|
|
input strings are sent to the parser.
|
|
- **Application programmer's interfaces**: both source-GF and PGF formats,
|
|
the shell, and the compiler are accessible via high-level APIs.
|
|
- **Resource library version 1.4**: more coverage, more languages; some of
|
|
the new GF language features are exploited.
|
|
- **Uniform character encoding**: UTF8 in generated files, user-definable in
|
|
source files
|
|
|
|
|
|
==Non-supported features==
|
|
|
|
There are some features of GF 2.9 that will //not// work in the 3.0 beta release.
|
|
- Java Editor GUI: we now see the JavaScript editor as the main form of
|
|
syntax editing.
|
|
- Pre-module multi-file grammar format: the grammar format of GF before version 2.0
|
|
is still not yet supported.
|
|
- Context-free and EBNF input grammar formats.
|
|
- Probabilistic GF grammars.
|
|
- Some output formats: LBNF.
|
|
- Some GF shell commands: while the main ones will be supported with their familiar
|
|
syntax and options, some old commands have not been included. The GF shell
|
|
command ``help -changes`` gives the actual list.
|
|
|
|
|
|
Users who want to have these features are welcome to contact us,
|
|
and even more welcome to contribute code that restores them!
|
|
|
|
|
|
==GF language extensions==
|
|
|
|
Operations for defining patterns.
|
|
|
|
Inheritance of overload groups.
|
|
|
|
|