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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 | + | *'''Empty''' |
{} | {} | ||
| − | *Type Declaration | + | *'''Type Declaration''' |
"type" typename [ '''type''' | "{" TypeCode "}"] | "type" typename [ '''type''' | "{" TypeCode "}"] | ||
| − | *VariableDeclaration | + | *'''VariableDeclaration''' |
| − | ['''type'''] varname [ "=" { varname2 | Expression } ] { ";" | "\n" } | + | ['''type'''] varname [ "=" { varname2 | '''Expression''' } ] { ";" | "\n" } |
| − | *Expression | + | *'''Expression''' |
| − | { ArithmeticExpression | LogicalExpression } | + | { '''ArithmeticExpression''' | '''LogicalExpression''' } |
| − | **ArithmeticExpression | + | **'''ArithmeticExpression''' |
| − | { Expression { "+" | "-" | "*" | "/" | "**" | "^" | "%" | "div" } Expression } | {Expression { "++" | "--" } } | { { "++" | "--" } Expression } | + | { '''Expression''' { "+" | "-" | "*" | "/" | "**" | "^" | "%" | "div" } '''Expression''' } | {'''Expression''' { "++" | "--" } } | { { "++" | "--" } '''Expression''' } |
| − | **LogicalExpression | + | **'''LogicalExpression''' |
| − | { Expression { "<" | "<=" | "==" | ">" | ">=" | "|" | "||" | "&" | "&&" | "^" } Expression } | + | { '''Expression''' { "<" | "<=" | "==" | ">" | ">=" | "|" | "||" | "&" | "&&" | "^" } '''Expression''' } |
| − | *Statement | + | *'''Statement''' |
| − | { Expression | VariableDeclaration } | + | { '''Expression''' | '''VariableDeclaration''' } |
| − | *StatementList | + | *'''StatementList''' |
| − | { Empty | Statement StatementList } | + | { '''Empty''' | '''Statement''' '''StatementList''' } |
| − | *Program | + | *'''Program''' |
| − | { StatementList} | + | { '''StatementList'''} |
| − | <br> | + | <br> |
== Disambiguation == | == Disambiguation == | ||
Revision as of 20:33, 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 .