// Declarations -> Decl | Decls
Declarations *parseDeclarations( FILE *source )
{
Token token = scanner(source);
int i;
Declaration decl;
Declarations *decls;
switch(token.type){
case FloatDeclaration:
case IntegerDeclaration:
decl = parseDeclaration(source, token);
decls = parseDeclarations(source);
return makeDeclarationTree( decl, decls );
case PrintOp:
case Alphabet:
for (i = strlen(token.tok) - 1; i >= 0; i--) {
ungetc(token.tok[i], source);
}
return NULL;
case EOFsymbol:
return NULL;
default:
printf("Syntax Error: Expect declarations %s\n", token.tok);
exit(1);
}
}
Declarations *parseDeclarations( FILE *source )//changed
{
Token token = scanner(source);
Declaration decl;
Declarations *decls;
switch(token.type){
case FloatDeclaration:
case IntegerDeclaration:
decl = parseDeclaration(source, token);
decls = parseDeclarations(source);
return makeDeclarationTree( decl, decls );
case PrintOp:
case Alphabet:
//ungetc(token.tok[0], source);
ungetstring(token.tok,source);
return NULL;
case EOFsymbol:
return NULL;
default:
printf("Syntax Error: Expect declarations %s\n", token.tok);
exit(1);
}
}