[ri4pp:2007] - Shift/Reduce conflict by "Aleksandar Acic" <alexboyds@gmail.com>

Ako neko zna kako treba preurediti datu gramatiku, da bi se prevazisao
Shift/Reduce conflict koji Cup prijavljuje prilikom uvodjenja akcija u
sledece smene iza terminala WHILE i LPAREN

molim da mi odgovori.

 

unmatched ::=       IF LPAREN condition RPAREN statement

                         |  IF LPAREN error RPAREN statement {:
System.out.println("Neispravna konstrukcija logickog izraza\n"); 

                                    p=false; :}

                         |  IF LPAREN condition RPAREN matched ELSE
unmatched

                         |  IF LPAREN error RPAREN matched ELSE unmatched {:
System.out.println("Neispravna konstrukcija logickog izraza\n"); 

                                     p=false; :}

                         |          WHILE {:!!!!!!!!!:} LPAREN {:!!!!!!!!!:}
condition RPAREN   unmatched

                         |          WHILE LPAREN error RPAREN unmatched {:
System.out.println("Neispravna konstrukcija logickog izraza\n"); 

                                                 p=false; :};

 

 

matched  ::=  designator:des EQUAL{:Output.write("=");:} expr:exp SEMI
{:sem.checkAssign(des,exp,expleft);Output.write(";\n"); :}

                                    |  error SEMI  {:
System.out.println("Neispravna konstrukcija izraza dodele\n"); 

                                     p=false; :}

                                    |    designator LPAREN LPAREN SEMI

                                    |    designator LPAREN act_pars RPAREN
SEMI

                                    |    designator:des ART_OP_INC SEMI
{:RESULT=sem.checkInc(des,desleft);:}

                                    |    designator:des ART_OP_DEC SEMI
{:RESULT=sem.checkDec(des,desleft);:}

                                    |    BREAK SEMI 

                                    |    RETURN SEMI{:  if (!isVoid)
System.out.println("Greska: Metoda je deklarisana kao void i mora imati
ispravan return iskaz!");   returnExists=true;Output.write("return;");:}

 

                                    |    RETURN{:Output.write(" return ");:}
expr SEMI{:  if (isVoid) System.out.println("Greska: Metoda je deklarisana
kao void! i ne sme imati return vrednost!"); returnExists=true;
Output.write(" ;");  :}

 

                                    |    READ LPAREN designator RPAREN SEMI

                                    |    PRINT LPAREN expr RPAREN SEMI

                                    |    PRINT LPAREN expr COMMA  NUMBER
RPAREN SEMI

                                    |    LBRACE RBRACE

                                    |    LBRACE stmt_list RBRACE

                                    

                                    |    IF LPAREN condition RPAREN matched
ELSE matched

                                    |    IF LPAREN error RPAREN matched ELSE
matched {: System.out.println("Neispravna konstrukcija logickog izraza\n"); 

                                        p=false; :}

                                    |           WHILE {:!!!!!!:} LPAREN
{:!!!!!!:} condition RPAREN   matched

                                    |           WHILE LPAREN error RPAREN
matched {: System.out.println("Neispravna konstrukcija logickog izraza\n"); 

                                                p=false; :};

Pozdrav

Aleksandar Acic