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GSL Examples

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Vorachet Jaroensawas

This document discusses using the GSL code generator to generate C code from an XML model. It provides instructions for installing GSL, generating code from a sample XML model called cppsystem.xml, and compiling the generated C code. It also notes some advantages of GSL like being fast, small, and not requiring an IDE. Finally, it discusses two issues with GSL for model merging and parsing element attributes and provides alternatives using Eclipse Epsilon.

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gsl_example If you are looking for usage examples of the FOR&IF control 鍖ow statement of iMatix GSL code generator, I created a simpli鍖ed C program functions model in XML and use GSL to generate C header and source 鍖les. GSL can be found here https://github.com/imatix/gsl (1) GSL speci鍖cation can be found here https://imatix-legacy.github.io/gslgen/gsldoc4.htm (2) Demo The GSL application concept for the demo (cppsystem.xml) (cppsystem.gsl, cmake,gsl, main,gsl, service_cpp.gsl, service_h.gsl) XML ------ 1..* -- GSL template | 1 | | | GSL command line ------ * -- output text file (CMakeLists.txt, ex_serv1.cpp, ex_serv2.cpp serv1.cpp, serv1.h, serv2.cpp, serv2.h) GSL command line program You will have to install the GSL command line program. GSL installation guide can be found here https://github.com/imatix/gsl What I have on my computer $ gsl GSL/4.1.4 Copyright (c) 1996-2016 iMatix Corporation syntax: gsl -<option> ... -<attr>[:<value>] ... <filename> ... .. more detail about the command-line options omitted CMake (https://cmake.org/) is required if you want to compile the example C code 鍖les demonstrated by this project
Generate code $ git clone https://github.com/vorachet/gsl_example.git $ cd gsl_example $ mkdir generated $ gsl cppsystem Once the command gsl cppsystemcan be executed successfully, generated code 鍖les will be saved in the ```generated`` folder gsl_example/generated CMakeLists.txt ex_serv1.cpp ex_serv2.cpp serv1.cpp serv1.h serv2.cpp serv2.h Compile code This step is optional. It deonstrates the creation of CMakeLists.txtand how to create executable C programs (ex_serv1, ex_serv2) from the example project. $ cd generated $ mkdir build $ cd build $ cmake .. $ make gsl_example/generated/build CMakeCache.txt CMakeFiles/ many files here Makefile cmake_install.cmake ex_serv1 ex_serv2 What I've learned Advantages of GSL
Super Fast Tiny program (<1Mb) Good Documentation No need to develop metamodels Built-in XML-based metamodel parser No IDE/Workbech/GUI required GSL can be one of your productive software engineering tools. GSL has developed by Pieter. (R.I.P Pieter Hintjens - the creator of ZMQ and GSL). Pieter contributed many productive works to the software industry. I am still looking for a solution for the following GSL application issues Issue-1 Merge task - How to use GSL to preserve manual code modi鍖cations across re- generations ? Issue-2 To parse the attr2tag (XML element rather than XML attribute) with the following example XML model seems not possible with GSL? <concept attr1="value1"> <attr2>value2</attr2> </concept> As an MDE learner who uses more than one code generation tool, the following notes may be useful if you are going to 鍖x the issues and don't mind using alternative tools di鍖ernt approach. Eclipse Epsilon (https://www.eclipse.org/epsilon) The Epsilon has features to satsify the issues. Issue-1 can be satis鍖ed by https://www.eclipse.org/epsilon/doc/egl/#merge-engine. Issue-2 can be satis鍖ed by the Eclipse Flexmi https://www.eclipse.org/epsilon/doc/鍖exmi/ I very much like a shell based environment and often perform MDE tasks with shell scripts. I developed mdeshell, a bash shell script based modeling environment that facilitates the de鍖nition of XML-based EMF metamodels/models and the execution of Model-2-Text transformation based on Model-Driven Engineering system implemented by the Eclipse Emfatic and the Epsilon Flexmi/EGL/EGX. Find more detail here https://github.com/vorachet/mdeshell

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GSL Examples

  • 1. gsl_example If you are looking for usage examples of the FOR&IF control 鍖ow statement of iMatix GSL code generator, I created a simpli鍖ed C program functions model in XML and use GSL to generate C header and source 鍖les. GSL can be found here https://github.com/imatix/gsl (1) GSL speci鍖cation can be found here https://imatix-legacy.github.io/gslgen/gsldoc4.htm (2) Demo The GSL application concept for the demo (cppsystem.xml) (cppsystem.gsl, cmake,gsl, main,gsl, service_cpp.gsl, service_h.gsl) XML ------ 1..* -- GSL template | 1 | | | GSL command line ------ * -- output text file (CMakeLists.txt, ex_serv1.cpp, ex_serv2.cpp serv1.cpp, serv1.h, serv2.cpp, serv2.h) GSL command line program You will have to install the GSL command line program. GSL installation guide can be found here https://github.com/imatix/gsl What I have on my computer $ gsl GSL/4.1.4 Copyright (c) 1996-2016 iMatix Corporation syntax: gsl -<option> ... -<attr>[:<value>] ... <filename> ... .. more detail about the command-line options omitted CMake (https://cmake.org/) is required if you want to compile the example C code 鍖les demonstrated by this project
  • 2. Generate code $ git clone https://github.com/vorachet/gsl_example.git $ cd gsl_example $ mkdir generated $ gsl cppsystem Once the command gsl cppsystemcan be executed successfully, generated code 鍖les will be saved in the ```generated`` folder gsl_example/generated CMakeLists.txt ex_serv1.cpp ex_serv2.cpp serv1.cpp serv1.h serv2.cpp serv2.h Compile code This step is optional. It deonstrates the creation of CMakeLists.txtand how to create executable C programs (ex_serv1, ex_serv2) from the example project. $ cd generated $ mkdir build $ cd build $ cmake .. $ make gsl_example/generated/build CMakeCache.txt CMakeFiles/ many files here Makefile cmake_install.cmake ex_serv1 ex_serv2 What I've learned Advantages of GSL
  • 3. Super Fast Tiny program (<1Mb) Good Documentation No need to develop metamodels Built-in XML-based metamodel parser No IDE/Workbech/GUI required GSL can be one of your productive software engineering tools. GSL has developed by Pieter. (R.I.P Pieter Hintjens - the creator of ZMQ and GSL). Pieter contributed many productive works to the software industry. I am still looking for a solution for the following GSL application issues Issue-1 Merge task - How to use GSL to preserve manual code modi鍖cations across re- generations ? Issue-2 To parse the attr2tag (XML element rather than XML attribute) with the following example XML model seems not possible with GSL? <concept attr1="value1"> <attr2>value2</attr2> </concept> As an MDE learner who uses more than one code generation tool, the following notes may be useful if you are going to 鍖x the issues and don't mind using alternative tools di鍖ernt approach. Eclipse Epsilon (https://www.eclipse.org/epsilon) The Epsilon has features to satsify the issues. Issue-1 can be satis鍖ed by https://www.eclipse.org/epsilon/doc/egl/#merge-engine. Issue-2 can be satis鍖ed by the Eclipse Flexmi https://www.eclipse.org/epsilon/doc/鍖exmi/ I very much like a shell based environment and often perform MDE tasks with shell scripts. I developed mdeshell, a bash shell script based modeling environment that facilitates the de鍖nition of XML-based EMF metamodels/models and the execution of Model-2-Text transformation based on Model-Driven Engineering system implemented by the Eclipse Emfatic and the Epsilon Flexmi/EGL/EGX. Find more detail here https://github.com/vorachet/mdeshell