Friday, March 25, 2011

New omc-parser code project

I recently opened a google code project to handle all the source files of this master's thesis.

The link is here:

Command-line access:

Use this command to anonymously check out the latest project source code:
# Non-members may check out a read-only working copy anonymously over HTTP.
svn checkout omc-parser-read-only

It is a good place to keep my code safe and also to report all the issues that I get during the development.

I have just setup a development environment in Linux and I want to be able to switch and keep updated all my source code between both operative systems.

Soon I will write an article about software configuration management for students that are developing a thesis, and my experience with this website will definitely help.

Wednesday, March 23, 2011

Tables generator ready

Now my work consist on build part of the code automatically from the Flex and Bison code generated in C.

In order to build this it is necessary to read the lexer.c and parser.c file and generate the that contains the arrays used for the automata machine, and the and used for the actions after a token is found for lexer and a shift reduce rule to build the AST for the parser. The files needs to be rebuild also from the parser.c code.

For making this machine customized for any language, it is necessary to link the generated files together with the main files and, so those files will be generated also with a sufix which will identify the machine.

For my thesis, the exercise 10 and exercise 4 are the examples I am using for testing the machine, so the machines will contain all these files with the sufix 10 and 4 respectively.

Some code cleaning is still necessary to do, but this does not affect the current work, it will be complemented later after the Error Handled is improved in the parser.

Friday, March 11, 2011

Parser Prototype done

This week is been very productive, after a good explanation of how to build the AST, I manage to build the typed AST for MetaModelica, it means that the goals for the prototype are reached and now I can move to the next phase which is to build the Lexer Generator.

There are still things to do, like cleaning the code from unused variables and better performance of the loops, besides the error handling which is another major milestone in this project.

Thursday, March 10, 2011

The Parser is now Parsing

After dealing with the C code generated by BISON, with more than 15 arrays and crazy GOTO statements, I have managed to create the first parser in MetaModelica that parses the exercise 10 of the MetaModelica examples (for those who have read the MetaModelica Document).

For the rest of the mortals, what I have achieve is to make the code of a program to be recognized by another program (Compiler Parser). However there are more stuff to do before this task is complete, including the generation of the AST, error handling and cleaning of the code.

It is now week 10 and hopefully 10 weeks more to go and finish this project. Next activities will be to focus on the MetaModelica code generation based on the Flex and Bison files.