private LinkerSymbol CreateCustomAttributeArgument(string symbolName, int count, string name, MosaCustomAttribute.Argument arg, bool isField)
{
string nameForSymbol = (name == null) ? count.ToString() : name;
nameForSymbol = symbolName + ":" + nameForSymbol;
var symbol = Linker.CreateSymbol(nameForSymbol + Metadata.CustomAttributeArgument, SectionKind.ROData, TypeLayout.NativePointerAlignment, 0);
var writer1 = new EndianAwareBinaryWriter(symbol.Stream, Architecture.Endianness);
// 1. Pointer to name (if named)
if (name != null)
{
var nameSymbol = EmitStringWithLength(nameForSymbol + Metadata.NameString, name);
Linker.Link(LinkType.AbsoluteAddress, NativePatchType, symbol, (int)writer1.Position, 0, nameSymbol, 0);
}
writer1.WriteZeroBytes(TypeLayout.NativePointerSize);
// 2. Is Argument A Field
writer1.Write(isField, TypeLayout.NativePointerSize);
// 3. Argument Type Pointer
Linker.Link(LinkType.AbsoluteAddress, NativePatchType, symbol, (int)writer1.Position, 0, arg.Type.FullName + Metadata.TypeDefinition, SectionKind.ROData, 0);
writer1.WriteZeroBytes(TypeLayout.NativePointerSize);
// 4. Argument Size
writer1.Write(ComputeArgumentSize(arg.Type, arg.Value), TypeLayout.NativePointerSize);
// 5. Argument Value
WriteArgument(writer1, symbol, arg.Type, arg.Value);
// Return symbol for linker usage
return symbol;
}
private LinkerSymbol CreateCustomAttribute(MosaUnit unit, MosaCustomAttribute ca, int position)
{
// Emit custom attribute list
string name = unit.FullName + ">>" + position.ToString() + ":" + ca.Constructor.DeclaringType.Name;
var customAttributeSymbol = Linker.CreateSymbol(name + Metadata.CustomAttribute, SectionKind.ROData, TypeLayout.NativePointerAlignment, 0);
var writer1 = new EndianAwareBinaryWriter(customAttributeSymbol.Stream, Architecture.Endianness);
// 1. Pointer to Attribute Type
Linker.Link(LinkType.AbsoluteAddress, NativePatchType, customAttributeSymbol, (int)writer1.Position, 0, ca.Constructor.DeclaringType.FullName + Metadata.TypeDefinition, SectionKind.ROData, 0);
writer1.WriteZeroBytes(TypeLayout.NativePointerSize);
// 2. Pointer to Constructor Method Definition
Linker.Link(LinkType.AbsoluteAddress, NativePatchType, customAttributeSymbol, (int)writer1.Position, 0, ca.Constructor.FullName + Metadata.MethodDefinition, SectionKind.ROData, 0);
writer1.WriteZeroBytes(TypeLayout.NativePointerSize);
// 3. Number of Arguments (Both unnamed and named)
writer1.Write((uint)(ca.Arguments.Length + ca.NamedArguments.Length), TypeLayout.NativePointerSize);
// 4. Pointers to Custom Attribute Arguments (Both unnamed and named)
for (int i = 0; i < ca.Arguments.Length; i++)
{
// Build definition
var customAttributeArgumentSymbol = CreateCustomAttributeArgument(name, i, null, ca.Arguments[i], false);
// Link
Linker.Link(LinkType.AbsoluteAddress, NativePatchType, customAttributeSymbol, (int)writer1.Position, 0, customAttributeArgumentSymbol, 0);
writer1.WriteZeroBytes(TypeLayout.NativePointerSize);
}
foreach (var namedArg in ca.NamedArguments)
{
// Build definition
var customAttributeArgumentSymbol = CreateCustomAttributeArgument(name, 0, namedArg.Name, namedArg.Argument, namedArg.IsField);
// Link
Linker.Link(LinkType.AbsoluteAddress, NativePatchType, customAttributeSymbol, (int)writer1.Position, 0, customAttributeArgumentSymbol, 0);
writer1.WriteZeroBytes(TypeLayout.NativePointerSize);
}
// Return customAttributeSymbol for linker usage
return customAttributeSymbol;
}
