public virtual object VisitFixedBufferNode(FixedBufferNode fixedBufferNode, object data)
{
stackMap.Push(fixedBufferNode);
fixedBufferNode.Attributes.AcceptVisitor(this, data);
fixedBufferNode.FixedBufferConstants.AcceptVisitor(this, data);
fixedBufferNode.Type.AcceptVisitor(this, data);
if (fixedBufferNode.Value != null)
{
fixedBufferNode.Value.AcceptVisitor(this, data);
}
stackMap.Pop();
return(null);
}
private void ParseFixedBuffer(StructNode st, FixedBufferNode node)
{
if (st == null)
{
ReportError("fixed buffer authorized only in structure declaration.");
}
if (!node.IsUnsafe)
{
ReportError("fixed buffer authorized only in unsafe context.");
}
if ((node.Modifiers & Modifier.Static) != Modifier.Empty)
{
ReportError("fixed buffer can not be declared as static.");
}
if ( node.Type is TypePointerNode )
{
ReportError("fixed buffer can not be pointer.");
}
else
{
StringCollection strColl = new StringCollection();
string type_str = ((TypeNode)node.Type).Identifier.QualifiedIdentifier.ToLower();
strColl.AddRange(new string[] { "sbyte", "byte", "short", "ushort", "int", "uint", "long", "ulong", "char", "float", "double", "bool" });
if (!strColl.Contains(type_str))
{
ReportError("fixed buffer element type must be of type sbyte, byte, short, ushort, int, uint, long, ulong, char, float, double or bool.");
}
}
AssertAndAdvance(TokenID.LBracket);
ConstantExpression expr = new ConstantExpression(curtok);
expr.Value = ParseExpression(TokenID.RBracket);
node.FixedBufferConstants.Add( expr );
AssertAndAdvance(TokenID.RBracket);
}
/// <summary>
///
/// </summary>
/// <param name="type"> type of the field</param>
/// <param name="name"> name in qualified form ( if it is an explicit interface declaration) </param>
private void ParseFixedBuffer(IType type, QualifiedIdentifierExpression name)
{
uint mask = ~(uint)Modifier.FxedBufferdMods;
if (((uint)curmods & mask) != (uint)Modifier.Empty)
ReportError("field declaration contains illegal modifiers");
FixedBufferNode node = new FixedBufferNode(curtok);
StructNode st = (StructNode)typeStack.Peek();
st.FixedBuffers.Add(node);
node.Modifiers = curmods;
curmods = Modifier.Empty;
if ((node.Modifiers & Modifier.Unsafe) != Modifier.Empty)
{
//unsafe modifier -> unsafe type.
isUnsafe++;
node.IsUnsafeDeclared = true;
}
node.IsUnsafe = isUnsafe > 0;
CheckStaticClass(st, node.Modifiers, true);
if (curAttributes.Count > 0)
{
node.Attributes = curAttributes;
curAttributes = new NodeCollection<AttributeNode>();
}
node.Type = type;
QualifiedIdentifierExpression fieldName = new QualifiedIdentifierExpression(name.RelatedToken);
fieldName.Expressions.Add(name);
node.Names.Add(fieldName);
//fixed buffer
// if the current type is not a structure, it is invalid
ParseFixedBuffer(st, node);
while (curtok.ID == TokenID.Comma)
{
Advance(); // over comma
QualifiedIdentifierExpression ident = ParseQualifiedIdentifier(false, false, true);
node.Names.Add(ident);
ParseFixedBuffer(st, node);
}
if (curtok.ID == TokenID.Semi)
{
Advance();
}
}
public virtual object VisitFixedBufferNode(FixedBufferNode fixedBufferNode, object data)
{
stackMap.Push(fixedBufferNode);
fixedBufferNode.Attributes.AcceptVisitor(this, data);
fixedBufferNode.FixedBufferConstants.AcceptVisitor(this, data);
fixedBufferNode.Type.AcceptVisitor(this, data);
if (fixedBufferNode.Value != null )
{
fixedBufferNode.Value.AcceptVisitor(this, data);
}
stackMap.Pop();
return null;
}