void label(Tok s)
{
Var var = new Var();
String label1 = "L@@" + s.getValue();
io.Message(s + "[Label]");
var.setName(label1);
var.setType(Var.VAR_LABEL);
try
{
currenttree.add(var);
}
catch
{
io.Abort("PL0111: invalid label declaration");
}
if (tok.getId() != Tok.TOK_1_REL)
{
io.Abort("PL0112: ':' expected");
}
io.Message(tok + "[:]");
last_label = s.getValue();
tok.scan();
}
void label(Tok s)
{
Var var = new Var();
String label1 = "L@@"+s.getValue();
io.Message(s+"[Label]");
var.setName(label1);
var.setType(Var.VAR_LABEL);
try
{
currenttree.add(var);
}
catch
{
io.Abort("PL0111: invalid label declaration");
}
if (tok.getId() != Tok.TOK_1_REL) io.Abort("PL0112: ':' expected");
io.Message(tok+"[:]");
last_label = s.getValue();
tok.scan();
}
void ident_stmt(VarList curtree)
{
Tok s = new Tok(null);
VarList vars = new VarList();
Var V;
int gotType = Tok.TOK_BINARY;
s.setValue(tok.getValue());
s.setId(tok.getId());
tok.scan();
switch (tok.getId()) {
case Tok.TOK_1_EQUALS:
if (curtree.FindByName(s.getValue()) == null) io.Abort("PL0137: undeclared variable");
V = new Var(); V.setName(s.getValue()); vars.add(V);
io.Message(s+"[Variable]");
io.Message(tok+"[Equals]");
tok.scan();
gotType = bool_expr(0);
typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId());
null_stmt();
break;
case Tok.TOK_1_COMMA:
io.Message(s+"[Variable]");
if (curtree.FindByName(s.getValue()) == null) io.Abort("PL0137: undeclared variable");
V = new Var(); V.setName(s.getValue()); vars.add(V);
while (tok.getId() != Tok.TOK_1_EQUALS) {
if (tok.getFirstChar() != ',') io.Abort("PL0138: ',' or '=' expected");
io.Message(tok+"[Comma]");
tok.scan();
if (tok.getId() != Tok.TOK_IDENT) io.Abort("PL0139: ident expected");
if (curtree.FindByName(tok.getValue()) == null) io.Abort("PL0137: undeclared variable");
V = new Var(); V.setName(tok.getValue()); vars.add(V);
io.Message(tok+"[Variable]");
tok.scan();
}
io.Message(tok+"[Assign]");
tok.scan();
gotType = bool_expr(0);
typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId());
null_stmt();
break;
case Tok.TOK_1_REL:
label(s);
break;
default:
io.Abort("PL0140: not found expected token ':', ',' or '='");
break;
}
for (int i = 0; i < vars.Length(); i ++) {
typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(i).getName()).getTypeId());
emit.Store(curtree.FindByName(vars.FindByIndex(i).getName()));
if (i < vars.Length() -1)
emit.Load(curtree.FindByName(vars.FindByIndex(0).getName()));
}
}
int ident()
{
int Typecast = Tok.TOK_VOID;
if (io.getNextChar() == '(')
{
io.Message(tok + "[Ident]");
Var e = call_construct(tok.getValue());
Typecast = e.getTypeId();
if (Typecast == Tok.TOK_VOID)
{
io.Abort("PL0147: using void function where expecting a value");
}
emit.Call(e);
tok.scan();
}
else
{
if (currenttree.FindByName(tok.getValue()) == null)
{
io.Abort("PL0105: undeclared variable");
}
Typecast = currenttree.FindByName(tok.getValue()).getTypeId();
emit.Load(currenttree.FindByName(tok.getValue()));
io.Message(tok + "[Ident]");
tok.scan();
}
return(Typecast);
}
void ident_stmt(VarList curtree)
{
Tok s = new Tok(null);
VarList vars = new VarList();
Var V;
int gotType = Tok.TOK_BINARY;
s.setValue(tok.getValue());
s.setId(tok.getId());
tok.scan();
switch (tok.getId())
{
case Tok.TOK_1_EQUALS:
if (curtree.FindByName(s.getValue()) == null)
{
io.Abort("PL0137: undeclared variable");
}
V = new Var(); V.setName(s.getValue()); vars.add(V);
io.Message(s + "[Variable]");
io.Message(tok + "[Equals]");
tok.scan();
gotType = bool_expr(0);
typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId());
null_stmt();
break;
case Tok.TOK_1_COMMA:
io.Message(s + "[Variable]");
if (curtree.FindByName(s.getValue()) == null)
{
io.Abort("PL0137: undeclared variable");
}
V = new Var(); V.setName(s.getValue()); vars.add(V);
while (tok.getId() != Tok.TOK_1_EQUALS)
{
if (tok.getFirstChar() != ',')
{
io.Abort("PL0138: ',' or '=' expected");
}
io.Message(tok + "[Comma]");
tok.scan();
if (tok.getId() != Tok.TOK_IDENT)
{
io.Abort("PL0139: ident expected");
}
if (curtree.FindByName(tok.getValue()) == null)
{
io.Abort("PL0137: undeclared variable");
}
V = new Var(); V.setName(tok.getValue()); vars.add(V);
io.Message(tok + "[Variable]");
tok.scan();
}
io.Message(tok + "[Assign]");
tok.scan();
gotType = bool_expr(0);
typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(0).getName()).getTypeId());
null_stmt();
break;
case Tok.TOK_1_REL:
label(s);
break;
default:
io.Abort("PL0140: not found expected token ':', ',' or '='");
break;
}
for (int i = 0; i < vars.Length(); i++)
{
typeCheckAssign(gotType, curtree.FindByName(vars.FindByIndex(i).getName()).getTypeId());
emit.Store(curtree.FindByName(vars.FindByIndex(i).getName()));
if (i < vars.Length() - 1)
{
emit.Load(curtree.FindByName(vars.FindByIndex(0).getName()));
}
}
}