void abbrev_prefix(ConsVisitor abbrev)
{
abbrev.visit_Atom_car().visit(Abbrev.get_symbol(lookahead));
if (Token.QUOTE == lookahead) {
match(Token.QUOTE);
} else if (Token.BACKQUOTE == lookahead) {
match(Token.BACKQUOTE);
} else if (Token.COMMA == lookahead) {
match(Token.COMMA);
} else if (Token.SPLICE == lookahead) {
match(Token.SPLICE);
} else {
throw new SyntaxError(m_attrib.loc, lookahead, Token.CLOSE_PAREN, Token.BOOL, Token.NUM, Token.CHAR, Token.STRING, Token.ID, Token.OPEN_PAREN, Token.QUOTE, Token.BACKQUOTE, Token.COMMA, Token.SPLICE);
}
}
void abbreviation(ConsVisitor cons)
{
if (Token.QUOTE == lookahead ||
Token.BACKQUOTE == lookahead ||
Token.COMMA == lookahead ||
Token.SPLICE == lookahead) {
abbrev_prefix(cons);
ConsVisitor cdr = cons.visit_Cons_cdr();
cdr.visit();
datum(cdr, true);
cdr.visit_cdr();
cdr.visitEnd();
} else {
throw new SyntaxError(m_attrib.loc, lookahead, Token.QUOTE, Token.BACKQUOTE, Token.COMMA, Token.SPLICE);
}
}
public SafeConsVisitor(ConsVisitor cons)
{
m_cons = cons;
}
void list_contents_tail(ConsVisitor cons)
{
if (Token.CLOSE_PAREN == lookahead) {
cons.visit_cdr();
} else if (
Token.BOOL == lookahead ||
Token.NUM == lookahead ||
Token.CHAR == lookahead ||
Token.STRING == lookahead ||
Token.ID == lookahead ||
Token.OPEN_PAREN == lookahead ||
Token.QUOTE == lookahead ||
Token.BACKQUOTE == lookahead ||
Token.COMMA == lookahead ||
Token.SPLICE == lookahead ||
Token.VECTOR == lookahead) {
ConsVisitor cdr = cons.visit_Cons_cdr();
cdr.visit();
datum(cdr, true);
list_contents_tail(cdr);
cdr.visitEnd();
} else if (Token.DOT == lookahead) {
dot_tail(cons);
} else {
throw new SyntaxError(m_attrib.loc, lookahead, Token.DOT, Token.CLOSE_PAREN, Token.BOOL, Token.NUM, Token.CHAR, Token.STRING, Token.ID, Token.OPEN_PAREN, Token.QUOTE, Token.BACKQUOTE, Token.COMMA, Token.SPLICE);
}
}
void list_contents(ConsVisitor cons)
{
if (Token.BOOL == lookahead ||
Token.NUM == lookahead ||
Token.CHAR == lookahead ||
Token.STRING == lookahead ||
Token.ID == lookahead ||
Token.OPEN_PAREN == lookahead ||
Token.QUOTE == lookahead ||
Token.BACKQUOTE == lookahead ||
Token.COMMA == lookahead ||
Token.SPLICE == lookahead ||
Token.VECTOR == lookahead) {
datum(cons, true);
list_contents_tail(cons);
} else {
throw new SyntaxError(m_attrib.loc, lookahead, Token.BOOL, Token.NUM, Token.CHAR, Token.STRING, Token.ID, Token.OPEN_PAREN, Token.QUOTE, Token.BACKQUOTE, Token.COMMA, Token.SPLICE);
}
}
void list(ConsVisitor cons, bool set_car)
{
if (Token.CLOSE_PAREN == lookahead) {
match(Token.CLOSE_PAREN);
if (set_car) {
cons.visit_car();
} else {
cons.visit_cdr();
}
} else if (
Token.BOOL == lookahead ||
Token.NUM == lookahead ||
Token.CHAR == lookahead ||
Token.STRING == lookahead ||
Token.ID == lookahead ||
Token.OPEN_PAREN == lookahead ||
Token.QUOTE == lookahead ||
Token.BACKQUOTE == lookahead ||
Token.COMMA == lookahead ||
Token.SPLICE == lookahead ||
Token.VECTOR == lookahead) {
ConsVisitor new_cons = set_car ? cons.visit_Cons_car() : cons.visit_Cons_cdr();
new_cons.visit();
list_contents(new_cons);
new_cons.visitEnd();
match(Token.CLOSE_PAREN);
} else {
throw new SyntaxError(m_attrib.loc, lookahead, Token.CLOSE_PAREN, Token.BOOL, Token.NUM, Token.CHAR, Token.STRING, Token.ID, Token.OPEN_PAREN, Token.QUOTE, Token.BACKQUOTE, Token.COMMA, Token.SPLICE, Token.VECTOR);
}
}
void dot_tail(ConsVisitor cons)
{
if (Token.DOT == lookahead) {
match(Token.DOT);
datum(cons, false);
} else {
throw new SyntaxError(m_attrib.loc, lookahead, Token.DOT);
}
}
void datum(ConsVisitor cons, bool set_car)
{
if (Token.BOOL == lookahead ||
Token.NUM == lookahead ||
Token.CHAR == lookahead ||
Token.STRING == lookahead ||
Token.ID == lookahead) {
AtomVisitor atom = set_car ? cons.visit_Atom_car() : cons.visit_Atom_cdr();
//atom.visit();
simple_datum(atom);
//atom.visitEnd();
} else if (Token.OPEN_PAREN == lookahead) {
match(Token.OPEN_PAREN);
list(cons, set_car);
} else if (
Token.QUOTE == lookahead ||
Token.BACKQUOTE == lookahead ||
Token.COMMA == lookahead ||
Token.SPLICE == lookahead) {
ConsVisitor new_cons = set_car ? cons.visit_Cons_car() : cons.visit_Cons_cdr();
new_cons.visit();
abbreviation(new_cons);
new_cons.visitEnd();
} else if (Token.VECTOR == lookahead) {
VectVisitor vec = set_car ? cons.visit_Vect_car() : cons.visit_Vect_cdr();
vec.visit();
vector(vec);
vec.visitEnd();
} else {
// ERROR
throw new SyntaxError(m_attrib.loc, lookahead, Token.BOOL, Token.NUM, Token.CHAR, Token.STRING, Token.ID, Token.OPEN_PAREN, Token.QUOTE, Token.BACKQUOTE, Token.COMMA, Token.SPLICE);
}
}
public ConsMultiVisitor(ConsVisitor car, ConsVisitor cdr)
{
this.car = car;
this.cdr = cdr;
}