static void Branch()
{
int target;
string name;
Label lab;
if (la.kind == brn_Sym)
{
Get();
}
else if (la.kind == bze_Sym)
{
Get();
}
else
{
SynErr(67);
}
string mnemonic = token.val;
IO.Write(token.val);
IO.Write("", 5);
if (la.kind == number_Sym)
{
Number(out target);
CodeGen.TwoWord(mnemonic, target);
}
else if (la.kind == identifier_Sym)
{
Ident(out name);
LabelEntry entry = LabelTable.Find(name);
if (entry == null)
{
lab = new Label(!known);
int lineNumber = token.line;
LabelTable.Insert(new LabelEntry(name, lab, lineNumber));
}
else
{
lab = entry.label;
entry.AddReference(token.line);
}
IO.Write(name);
IO.Write("", 10 - name.Length);
CodeGen.Branch(mnemonic, lab);
}
else
{
SynErr(68);
}
}
static void TwoWord()
{
int value;
if (la.kind == dsp_Sym)
{
Get();
}
else if (la.kind == ldc_Sym)
{
Get();
}
else if (la.kind == lda_Sym)
{
Get();
}
else if (la.kind == ldl_Sym)
{
Get();
}
else if (la.kind == stl_Sym)
{
Get();
}
else
{
SynErr(65);
}
string mnemonic = token.val;
IO.Write(token.val);
IO.Write("", 8 - token.val.Length);
if (la.kind == number_Sym)
{
Number(out value);
CodeGen.TwoWord(mnemonic, value);
}
else if (la.kind == identifier_Sym)
{
Variable(out value);
CodeGen.TwoWord(mnemonic, value);
}
else
{
SynErr(66);
}
}