public override void CaseASAssignmentExp(ASAssignmentExp node)
{
InASAssignmentExp(node);
if (node.GetExp() != null)
{
node.GetExp().Apply(this);
}
if (node.GetLvalue() != null)
{
node.GetLvalue().Apply(this);
}
if (node.GetAssignop() != null)
{
node.GetAssignop().Apply(this);
}
OutASAssignmentExp(node);
}
public override void OutASAssignmentExp(ASAssignmentExp node)
{
AAssignmentExp replacer = null;
PAssignop assignop = node.GetAssignop();
Token token = null;
PBinop binop = null;
if (assignop is AAddAssignop)
{
token = ((AAddAssignop)assignop).GetToken();
binop = new APlusBinop(new TPlus("+", token.Line, token.Pos));
}
else if (assignop is ASubAssignop)
{
token = ((ASubAssignop)assignop).GetToken();
binop = new AMinusBinop(new TMinus("-", token.Line, token.Pos));
}
else if (assignop is AMulAssignop)
{
token = ((AMulAssignop)assignop).GetToken();
binop = new ATimesBinop(new TStar("*", token.Line, token.Pos));
}
else if (assignop is ADivAssignop)
{
token = ((ADivAssignop)assignop).GetToken();
binop = new ADivideBinop(new TDiv("/", token.Line, token.Pos));
}
else if (assignop is AModAssignop)
{
token = ((AModAssignop)assignop).GetToken();
binop = new AModuloBinop(new TMod("%", token.Line, token.Pos));
}
else// if (assignop is AAssignAssignop)
{
token = ((AAssignAssignop)assignop).GetToken();
}
PExp rightSide;
if (binop != null)
rightSide = new ABinopExp(new ALvalueExp((PLvalue)node.GetLvalue().Clone()),
binop,
(PExp)node.GetExp().Clone());
else
rightSide = (PExp)node.GetExp().Clone();
replacer = new AAssignmentExp(new TAssign("=", token.Line, token.Pos), (PLvalue)node.GetLvalue().Clone(), rightSide);
node.ReplaceBy(replacer);
replacer.Apply(this);
}