FinalGrammer.grm

! Welcome to GOLD Parser Builder 5.2
"Start Symbol"=<program>
{Hex Digit}      = {Digit} + [abcdefABCDEF]
{Oct Digit}      = [01234567]

{Id Head}        = {Letter} + [_]
{Id Tail}        = {Id Head} + {Digit}

{String Ch}      = {Printable} - ["]
{Char Ch}        = {Printable} - ['']
                        
     
StringLiteral = '"' ( {String Ch} | '\' {Printable} )* '"'
              

CharLitreral=''( {String Ch} | '\' {Printable} )''
            

Number=(1|2|3|4|5|6|7|8|9|0)+
      

FNumber=(1|2|3|4|5|6|7|8|9|0)+ '.' (1|2|3|4|5|6|7|8|9|0)+
      

id              ={ID Head}{ID Tail}*|'int'|'double'|'boolean'|'char'
    


<program> ::= <Declerations> <program>
          |

<Declerations>  ::= <Function Declertion>
          | <Function Prototype>
          | <VarDecleration>
          | <StructDecleration>
          | <ClassDecleration>
          | <ConstDecleration>    
          
!          | <Union Decl>
!          | <Enum Decl>
!          | <Typedef Decl>
              
! ===================================================================
! Function  Declaration
! ===================================================================

<Function Prototype> ::= <Type> id '(' <Types>  ')' ';'
                       | <Type> id '(' <Params> ')' ';'
                       | <Type> id '(' ')' ';'

<Function Declertion>  ::= <Type> id '(' <Params>  ')' '{'<MethodBody>'}'
                         | <Type> id '(' ')' '{'<MethodBody>'}'


<Params>     ::= <Type> id ',' <Params>
               | <Type> id
               
<Types>      ::= <Type>  ',' <Types>
               | <Type> 

<Type>::=id        

<ConstDecleration>::='const'<Type>id'='<Literal>';'
                        
<ClassDecleration>::='class'id'{'<BodyType>'}'';'
                      
<StructDecleration>::='struct'id'{'<BodyType>'}'';'

<BodyType>::=<AccessType><Declerations><BodyType>|<Declerations><BodyType>|<>
             
<AccessType>::='public'':'|'protected'':'|'private'':'
        
<Literal>::=StringLiteral|CharLitreral|Number|FNumber|'true'|'false'
         
<opt Value>::='='<Literal>|<>
             
<VarDecleration>::=<Type>id<opt Value><LoopVarDec>';'

<LoopVarDec>::=','id<opt Value><LoopVarDec>|<>             
                 
<MethodBody>::=<StatementSequence><MethodBody>|<>               
             
<LoopStatementSeq>::=<StatementSequence><LoopStatementSeq>|<>

<Assignment>::=<LValue><RValue>

<StatementSequence>::=<Assignment>';'|'if''('<Condition>')'<Factor of StatementSeq><ElseIF><Else>
                        |'while''('<Condition>')'<Factor of StatementSeq>
                        |'break'';'
                        |'return'<Experssion>';'|'return'';'
                        |'cin'<cin Param>';'
                        |'cout'<Opt cout param>';'
                        |';'
                        |<VarDecleration>
                        
<ElseIF>::='elseif''('<Condition>')'<Factor of StatementSeq><ElseIF>|<>
         
<Else>::='else'<Factor of StatementSeq>|<>
                    
<Factor of StatementSeq>::=<StatementSequence>|'{'<LoopStatementSeq>'}'
                         
<cin Param>::='>>'<LValue><cin Param>|'>>'<LValue>
           
<cout param>::=id|StringLiteral|CharLitreral|Number|FNumber
             
<Opt cout param>::='<<'<cout param><Opt cout param>|'<<'<cout param>
                    
<RValue>::='='<Experssion>|'('<ActualParameters>')'|'++'|'--'

<ActualParameters>::=<Experssion><LoopExperssion>|<>
                   
<LoopExperssion>::=','<Experssion><LoopExperssion>|<>
                 
<Condition>::=<CTerm><Loop CTerm>

<Loop CTerm>::='||'<CTerm><Loop CTerm>|<>

<CTerm>::=<CFact><Loop CFact>
        
<Loop CFact>::='&&'<CFact><Loop CFact>|<>
             
<CFact>::=<Experssion><Relop><Experssion>|<Experssion>
        
<Relop>::='=='|'!='|'>'|'>='|'<='|'<'

<Experssion>::='-'<Term><LoopTerm>|<Term><LoopTerm>
       
<LoopTerm>::='+'<Term><LoopTerm>|'-'<Term><LoopTerm>|<>
           
<Term>::=<Factor><LoopFactor>
       
<LoopFactor>::='*'<Factor><LoopFactor>|'/'<Factor><LoopFactor>|'%'<Factor><LoopFactor>|<>

<Factor>::=<LValue><Opt ActualParameters>|StringLiteral|CharLitreral|Number|FNumber|'('<Experssion>')'
         
<Opt ActualParameters>::='('<ActualParameters>')'|<>

<LValue>::=id<LoopLValue>
         
<LoopLValue>::='.'id<LoopLValue>|'['<Experssion>']'<LoopLValue>|<>