LLOOP Overview

LLOOP - Reversible Object-Oriented Parser Generator

LLOOP allows to fully automate the management of command line options without any programming, just by providing a formal description of the options. Subsets of options can be defined within another set of options, thereby allowing to structure hierarchically all options.

The following diagram shows what is generated from the option specification(s). This functionality is thoroughly used by the generator itself (gspc.exe) and is therefore illustrated using specification excerpts and resulting generated code and outputs from there. "[...]" stands for information removed for readability purposes:

Options Specification [...] symbol MakeExeOption implements option( "Executable", "--make-exe", "Tells whether to generate a makefile that builds an executable", "--make-exe") ; symbol MakeLibOption implements option( "Library", "--make-lib", "Tells whether to generate a makefile that builds a library", "--make-lib") ; symbol PlatformOption implements option( "Platform", "--platform=<PLATFORM>", "Gives the name [...]", PlatformName) ; [...] symbol AdvancedMakefileOptionSet implements optionset( "Advanded Makefile Option Set", "Advanded Makefile Option Set", gspc_arguments_make.ArgumentMAK) ; [...]

C++ Parse Code gspc_arguments::Parser parser(argc, argv); parser.run(); C++ Formatted Usage Function >gspc -- usage: gspc [ options ] [...] --make-exe Executable --make-lib Library --platform=<PLATFORM> Platform [...] C++ Formatted Detailed Help Function >gspc -h help: [...] --make-exe Tells whether to generate a makefile that builds an executable --make-lib Tells whether to generate a makefile that builds a library --platform=<PLATFORM> Gives the name of the platform for which the executable or library shall be build. Possible values are 'windows', 'unix' and 'all'. [...] TCL/TK Forms Graphical Front End

Check also the following links:

• Complete example
• More information

Range of Application and References

The facilities offered by LLOOP make it suitable for a wide range of applications, even for simple operations:

• Application-level Configuration (e.g. ini, XML files...)
• Scenario Files
• Integrated Scripting for Dynamic Application or Testing
• Language Compilers and Interpreters. Reverse parsing allows automatic error correction
• Automated Command Line Options Management
• Log Files Analysing
• File Format Translating
• Communication Protocol Designing
• Capitalising, Re-use, Maintenance and Integration of technologies

Beside these common applications, LLOOP can also be used for:

• Generation of cross-platform General-Purpose Data Forms
• Rapid and generic building of Graphical Front Ends for command line applications

References

This file is part of the LLOOP Reversible Object-Oriented Parser Generator. Copyright (c) 2005-2006 Michel MEHL, France. All rights reserved. LLOOP is distributed by the company ERSA SaRL.