С(ringe)

The С(ringe) language is a simplified copy of the C language.

The source code is compiled via AST into assembly code, that can be execute by Processor.

С(ringe) grammar:

I used EBNF syntax to describe grammar of my language.

Grammar for recursive descent:

G ::= St+, '\0' ;

St ::= [Cond | As | E | FuncDef], ';' ;

Blk ::= '{', St+, '}' ;

Cond ::= 'if', '(', E, ')', Blk, ['else', '(', ')', Blk] ;

As ::= Vas, '=', E ;

FuncDef ::= 'def', '!', Func, Blk ;

Func ::= Name, '(', ')' ;

StdFunc ::= ('print' | 'sqrt' | 'scan'), '(', E, ')' ;

E ::= T ((+ | -), T)* ;

T ::= P ((* | /), P)* ;

P ::= ('(', E, ')') | N | Var | StdFunc | Func ;

N ::= FloatingPointNumber ;

Var ::= Name ;

Grammar for tokenizer:

Name   ::= Letter, (Letter | Digit | "_")* ;

Letter ::= ('a'-'z') | ('A'-'Z') ;

FloatingPointNumber ::= ['-'], ('0' | NaturalNumber), '.', NaturalNumber ;

NaturalNumber       ::= DigitExcludingZero, Digit* ;

Digit               ::= '0' | DigitExcludingZero ;

DigitExcludingZero  ::= ('1'-'9');

How to use Language:

Input - is a program in С(ringe) language. You should pass a path to source code in the first argument of programm.

Output - is a assembly code. You should pass a path to place where you want to see your assembly code in the second argument of programm.