//only supporting simple assignments (=) now, not compound assignments (ie +=, *= etc)
public void genAssignmentExpression(AssignExprNode expr)
{
genExpression(expr.rhs);
assembly.addLine("pop eax"); //rhs --> eax
IdentExprNode lvar = (IdentExprNode)expr.lhs;
OILNode lsym = lvar.idsym;
switch (lsym.type)
{
case OILType.ParamDecl:
uint pofs = ((CGParamDeclNode)(lsym.cgnode)).addr;
assembly.addLine("mov [ebp+" + pofs + "],eax");
break;
case OILType.VarDecl:
uint vofs = ((CGVarDeclNode)(lsym.cgnode)).addr;
assembly.addLine("mov [ebp-" + vofs + "],eax");
break;
default:
break;
}
}
public virtual TResult Visit(AssignExprNode node) => this.VisitChildren(node);
//-------------------------------------------------
public AssignExprNode makeAssignExpressionNode(AssignExprNode.OPERATOR oper, ExprNode lhs, ExprNode rhs)
{
AssignExprNode node = new AssignExprNode(oper, lhs, rhs);
return(node);
}