public void atCastExpr(CastExpr expr) throws CompileError {
String cname = resolveClassName(expr.getClassName());
String toClass = checkCastExpr(expr, cname);
int srcType = exprType;
exprType = expr.getType();
arrayDim = expr.getArrayDim();
className = cname;
if (toClass == null) atNumCastExpr(srcType, exprType); // built-in type
else bytecode.addCheckcast(toClass);
}
protected void atAssignCore(Expr expr, int op, ASTree right, int type, int dim, String cname)
throws CompileError {
if (op == PLUS_E && dim == 0 && type == CLASS) atStringPlusEq(expr, type, dim, cname, right);
else {
right.accept(this);
if (invalidDim(exprType, arrayDim, className, type, dim, cname, false)
|| (op != '=' && dim > 0)) badAssign(expr);
if (op != '=') {
int token = assignOps[op - MOD_E];
int k = lookupBinOp(token);
if (k < 0) fatal();
atArithBinExpr(expr, token, k, type);
}
}
if (op != '=' || (dim == 0 && !isRefType(type))) atNumCastExpr(exprType, type);
// type check should be done here.
}