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  ===
+
The Grammar follows as below
 +
 
 +
==== Empty  ====
  
 
   {}
 
   {}
  
=== Type Declaration  ===
+
==== Type Declaration  ====
  
 
   "type" typename [ existingtype | "{" TypeCode "}"]
 
   "type" typename [ existingtype | "{" TypeCode "}"]
  
=== VariableDeclaration  ===
+
==== VariableDeclaration  ====
  
 
   [ [[ETrice/GSoC/2012/GACL#Type_Declaration|type]] ] varname [ "=" { varname2 | [[ETrice/GSoC/2012/GACL#Expression|Expression]] } ] { ";" | "\n" }
 
   [ [[ETrice/GSoC/2012/GACL#Type_Declaration|type]] ] varname [ "=" { varname2 | [[ETrice/GSoC/2012/GACL#Expression|Expression]] } ] { ";" | "\n" }
  
=== Expression  ===
+
==== Expression  ====
  
 
   { [[ETrice/GSoC/2012/GACL#ArithmeticExpression|ArithmeticExpression]] | [[ETrice/GSoC/2012/GACL#LogicalExpression|LogicalExpression]] }
 
   { [[ETrice/GSoC/2012/GACL#ArithmeticExpression|ArithmeticExpression]] | [[ETrice/GSoC/2012/GACL#LogicalExpression|LogicalExpression]] }
  
==== ArithmeticExpression  ====
+
===== ArithmeticExpression  =====
  
 
   { [[ETrice/GSoC/2012/GACL#Expression|Expression]] { "+" | "-" | "*" | "/" | "**" | "^" | "%" | "div" } [[ETrice/GSoC/2012/GACL#Expression|Expression]] }  
 
   { [[ETrice/GSoC/2012/GACL#Expression|Expression]] { "+" | "-" | "*" | "/" | "**" | "^" | "%" | "div" } [[ETrice/GSoC/2012/GACL#Expression|Expression]] }  
 
  | {[[ETrice/GSoC/2012/GACL#Expression|Expression]] { "++" | "--" } } | { { "++" | "--" } [[ETrice/GSoC/2012/GACL#Expression|Expression]] }
 
  | {[[ETrice/GSoC/2012/GACL#Expression|Expression]] { "++" | "--" } } | { { "++" | "--" } [[ETrice/GSoC/2012/GACL#Expression|Expression]] }
  
==== LogicalExpression  ====
+
===== LogicalExpression  =====
  
 
   { [[ETrice/GSoC/2012/GACL#Expression|Expression]] { "<" | "<=" | "==" | ">" | ">=" | "|" | "||" | "&" | "&&" | "^" } [[ETrice/GSoC/2012/GACL#Expression|Expression]] }
 
   { [[ETrice/GSoC/2012/GACL#Expression|Expression]] { "<" | "<=" | "==" | ">" | ">=" | "|" | "||" | "&" | "&&" | "^" } [[ETrice/GSoC/2012/GACL#Expression|Expression]] }
  
=== Statement  ===
+
==== Statement  ====
  
 
   { [[ETrice/GSoC/2012/GACL#Expression|Expression]] | [[ETrice/GSoC/2012/GACL#Expression|Expression]] }
 
   { [[ETrice/GSoC/2012/GACL#Expression|Expression]] | [[ETrice/GSoC/2012/GACL#Expression|Expression]] }
  
=== StatementList  ===
+
==== StatementList  ====
  
 
   { [[ETrice/GSoC/2012/GACL#Empty|Empty]] | [[ETrice/GSoC/2012/GACL#Statement|Statement]] [[ETrice/GSoC/2012/GACL#Statementlist|Statementlist]] }
 
   { [[ETrice/GSoC/2012/GACL#Empty|Empty]] | [[ETrice/GSoC/2012/GACL#Statement|Statement]] [[ETrice/GSoC/2012/GACL#Statementlist|Statementlist]] }
  
=== Program  ===
+
==== Program  ====
  
   { [[ETrice/GSoC/2012/GACL#Statementlist | Statementlist]] }
+
   { [[ETrice/GSoC/2012/GACL#Statementlist| Statementlist]] }
  
 
<br>  
 
<br>  

Revision as of 11:38, 31 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 .

The Grammar follows as below

Empty

 {}

Type Declaration

 "type" typename [ existingtype | "{" TypeCode "}"]

VariableDeclaration

 [ type ] varname [ "=" { varname2 | Expression } ] { ";" | "\n" }

Expression

 { ArithmeticExpression | LogicalExpression }
ArithmeticExpression
 { Expression { "+" | "-" | "*" | "/" | "**" | "^" | "%" | "div" } Expression } 
| {Expression { "++" | "--" } } | { { "++" | "--" } Expression }
LogicalExpression
 { Expression { "<" | "<=" | "==" | ">" | ">=" | "|" | "||" | "&" | "&&" | "^" } Expression }

Statement

 { Expression | Expression }

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