Difference between revisions of "ETrice/GSoC/2012/GACL"

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Although syntax for GACL is still being designed but here are few thought regarding syntax .  
 
Although syntax for GACL is still being designed but here are few thought regarding syntax .  
  
===== Empty =====
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===== Empty =====
  
 
   {}
 
   {}
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*'''StatementList'''
 
*'''StatementList'''
  
   { [[Empty]] | '''Statement''' '''StatementList''' }
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   { [[ETrice/GSoC/2012/GACL#Empty|Empty]] | '''Statement''' '''StatementList''' }
  
 
*'''Program'''
 
*'''Program'''

Revision as of 20:52, 30 March 2012

Contents

Generic Action Code Language (GACL)

GACL is the language to describe the Detail Code for execution of ROOM Models in eTrice plugin . GACL aims at dealing with all features commonly available in imperative languages , especially Java , C/C++ . It will act as complement of current version of eTrice which uses code written in target language stored in a string as execution code . GACL would make user able to write execution code independent of target language .

Development Details and Core Information

Features of GACL

  • Variable Declarations ( with optional initializers ) and Function Declaration .
  • Comparison & arithmetic expressions .
  • Basic types , and user defined types .
  • If-else blocks and ladders .
  • For , while , for each , enhanched for each .
  • Support for iterators (that can be used by for each loops ) .
  • Function Calls with arguments & diff types i.e. ref/value/address .
  • type checking and as much as possible implicit type casting .
  • Casts corresponding to static casts in C .

Thoughts on Syntax

Although syntax for GACL is still being designed but here are few thought regarding syntax .

Empty
 {}
  • Type Declaration
 "type" typename [ type | "{" TypeCode "}"]
  • VariableDeclaration
 [type] varname [ "=" { varname2 | Expression } ] { ";" | "\n" }
  • Expression
 { ArithmeticExpression | LogicalExpression }
    • ArithmeticExpression
 { Expression { "+" | "-" | "*" | "/" | "**" | "^" | "%" | "div" } Expression } 
| {Expression { "++" | "--" } } | { { "++" | "--" } Expression }
    • LogicalExpression
 { Expression { "<" | "<=" | "==" | ">" | ">=" | "|" | "||" | "&" | "&&" | "^" } Expression }
  • Statement
 { Expression | VariableDeclaration }
  • StatementList
 { Empty | Statement StatementList }
  • Program
 { StatementList}


Disambiguation

The syntax used to specify the grammar in brief is

  • Things written in double quotes ("") stand as string written in source .
  • Content inside braces ({}) represents required content .
  • Content inside square brackets ([]) represents optional content .
  • Everything rest is either terminal or non-terminals .
  • Empty and statement list need a more thought to be done . We would surely finally come up with a better solution .

Project Proposal

Click Here to see the project proposal at gsoc's website .

Click Here to see the project proposal in my github repository .

Useful Links