public void Visit(IdentifierNode node)
{
if (!scope.IsDefined(node.Text, out node.StaticType))
{
errors.Add(SemanticError.NotDeclaredVariable(node));
}
}
public void Visit(AssignmentNode node)
{
node.ExpressionRight.Accept(this);
if (!scope.IsDefined(node.ID.Text, out TypeInfo type))
{
errors.Add(SemanticError.NotDeclaredVariable(node.ID));
}
if (!(node.ExpressionRight.StaticType <= type))
{
errors.Add(SemanticError.CannotConvert(node, node.ExpressionRight.StaticType, type));
}
node.StaticType = node.ExpressionRight.StaticType;
}