building compiler in ANTLR using java as source language. its divided into 4 parts- 1. lexical analysis 2. syntax analysis 3. intermediate code generation 4. machine code generation

rules

-> class Program { * * } -> ( | [ ] ) ( , | [ ] )* ; -> = ; -> ( | void ) ( (( ) ( , )*)? ) -> { * * } -> ( , )* ; -> int | boolean -> ; -> ; -> if ( ) ( else )? -> for = , -> return ( )? ; -> break ; -> continue ; -> -> = -> += -> -= -> ( ( ( , )*)? ) -> callout ( ( , )* ) -> -> -> [ ] -> -> -> -> -> - -> ! -> ( ) -> | -> | | | -> + | - | * | / | % -> < | > | <= | >= -> == | != -> && | || -> | | -> * -> [a-zA-Z_] -> | -> [0-9] -> | [a-fA-F] -> | -> * -> 0x * -> true | false -> -> *