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The Labs \ Source Viewer \ SSCLI \ System.Reflection.Emit \ SymbolType

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// ==++==
//
//
//
// The use and distribution terms for this software are contained in the file
// named license.txt, which can be found in the root of this distribution.
// By using this software in any fashion, you are agreeing to be bound by the
// terms of this license.
//
// You must not remove this notice, or any other, from this software.
//
//
// ==--==
namespace System.Reflection.Emit
{
using System.Runtime.InteropServices;
using System;
using System.Reflection;
using CultureInfo = System.Globalization.CultureInfo;
[Serializable()]
internal enum TypeKind
{
IsArray = 1,
IsPointer = 2,
IsByRef = 3
}
// This is a kind of Type object that will represent the compound expression of a parameter type or field type.
internal sealed class SymbolType : Type
{
#region Static Members
static internal Type FormCompoundType(char[] bFormat, Type baseType, int curIndex)
{
// This function takes a string to describe the compound type, such as "[,][]", and a baseType.
//
// Example: [2..4] - one dimension array with lower bound 2 and size of 3
// Example: [3, 5, 6] - three dimension array with lower bound 3, 5, 6
// Example: [-3, ] [] - one dimensional array of two dimensional array (with lower bound -3 for
// the first dimension)
// Example: []* - pointer to a one dimensional array
// Example: *[] - one dimensional array. The element type is a pointer to the baseType
// Example: []& - ByRef of a single dimensional array. Only one & is allowed and it must appear the last!
// Example: [?] - Array with unknown bound
SymbolType symbolType;
int iLowerBound;
int iUpperBound;
if (bFormat == null || curIndex == bFormat.Length) {
// we have consumed all of the format string
return baseType;
}
if (bFormat[curIndex] == '&') {
// ByRef case
symbolType = new SymbolType(TypeKind.IsByRef);
symbolType.SetFormat(bFormat, curIndex, 1);
curIndex++;
if (curIndex != bFormat.Length)
// ByRef has to be the last char!!
throw new ArgumentException(Environment.GetResourceString("Argument_BadSigFormat"));
symbolType.SetElementType(baseType);
return symbolType;
}
if (bFormat[curIndex] == '[') {
// Array type.
symbolType = new SymbolType(TypeKind.IsArray);
int startIndex = curIndex;
curIndex++;
iLowerBound = 0;
iUpperBound = -1;
// Example: [2..4] - one dimension array with lower bound 2 and size of 3
// Example: [3, 5, 6] - three dimension array with lower bound 3, 5, 6
// Example: [-3, ] [] - one dimensional array of two dimensional array (with lower bound -3 sepcified)
while (bFormat[curIndex] != ']') {
if (bFormat[curIndex] == '*') {
symbolType.m_isSzArray = false;
curIndex++;
}
// consume, one dimension at a time
if ((bFormat[curIndex] >= '0' && bFormat[curIndex] <= '9') || bFormat[curIndex] == '-') {
bool isNegative = false;
if (bFormat[curIndex] == '-') {
isNegative = true;
curIndex++;
}
// lower bound is specified. Consume the low bound
while (bFormat[curIndex] >= '0' && bFormat[curIndex] <= '9') {
iLowerBound = iLowerBound * 10;
iLowerBound += bFormat[curIndex] - '0';
curIndex++;
}
if (isNegative) {
iLowerBound = 0 - iLowerBound;
}
// set the upper bound to be less than LowerBound to indicate that upper bound it not specified yet!
iUpperBound = iLowerBound - 1;
}
if (bFormat[curIndex] == '.') {
// upper bound is specified
// skip over ".."
curIndex++;
if (bFormat[curIndex] != '.') {
// bad format!! Throw exception
throw new ArgumentException(Environment.GetResourceString("Argument_BadSigFormat"));
}
curIndex++;
// consume the upper bound
if ((bFormat[curIndex] >= '0' && bFormat[curIndex] <= '9') || bFormat[curIndex] == '-') {
bool isNegative = false;
iUpperBound = 0;
if (bFormat[curIndex] == '-') {
isNegative = true;
curIndex++;
}
// lower bound is specified. Consume the low bound
while (bFormat[curIndex] >= '0' && bFormat[curIndex] <= '9') {
iUpperBound = iUpperBound * 10;
iUpperBound += bFormat[curIndex] - '0';
curIndex++;
}
if (isNegative) {
iUpperBound = 0 - iUpperBound;
}
if (iUpperBound < iLowerBound) {
// User specified upper bound less than lower bound, this is an error.
// Throw error exception.
throw new ArgumentException(Environment.GetResourceString("Argument_BadSigFormat"));
}
}
}
if (bFormat[curIndex] == ',') {
// We have more dimension to deal with.
// now set the lower bound, the size, and increase the dimension count!
curIndex++;
symbolType.SetBounds(iLowerBound, iUpperBound);
// clear the lower and upper bound information for next dimension
iLowerBound = 0;
iUpperBound = -1;
}
else if (bFormat[curIndex] != ']') {
throw new ArgumentException(Environment.GetResourceString("Argument_BadSigFormat"));
}
}
// The last dimension information
symbolType.SetBounds(iLowerBound, iUpperBound);
// skip over ']'
curIndex++;
symbolType.SetFormat(bFormat, startIndex, curIndex - startIndex);
// set the base type of array
symbolType.SetElementType(baseType);
return FormCompoundType(bFormat, symbolType, curIndex);
}
else if (bFormat[curIndex] == '*') {
// pointer type.
symbolType = new SymbolType(TypeKind.IsPointer);
symbolType.SetFormat(bFormat, curIndex, 1);
curIndex++;
symbolType.SetElementType(baseType);
return FormCompoundType(bFormat, symbolType, curIndex);
}
return null;
}
#endregion
#region Data Members
internal TypeKind m_typeKind;
internal Type m_baseType;
internal int m_cRank;
// count of dimension
// If LowerBound and UpperBound is equal, that means one element.
// If UpperBound is less than LowerBound, then the size is not specified.
internal int[] m_iaLowerBound;
internal int[] m_iaUpperBound;
// count of dimension
private char[] m_bFormat;
// format string to form the full name.
private bool m_isSzArray = true;
#endregion
#region Constructor
internal SymbolType(TypeKind typeKind)
{
m_typeKind = typeKind;
m_iaLowerBound = new int[4];
m_iaUpperBound = new int[4];
}
#endregion
#region Internal Members
internal void SetElementType(Type baseType)
{
if (baseType == null)
throw new ArgumentNullException("baseType");
m_baseType = baseType;
}
internal void SetBounds(int lower, int upper)
{
// Increase the rank, set lower and upper bound
if (lower != 0 || upper != -1)
m_isSzArray = false;
if (m_iaLowerBound.Length <= m_cRank) {
// resize the bound array
int[] iaTemp = new int[m_cRank * 2];
Array.Copy(m_iaLowerBound, iaTemp, m_cRank);
m_iaLowerBound = iaTemp;
Array.Copy(m_iaUpperBound, iaTemp, m_cRank);
m_iaUpperBound = iaTemp;
}
m_iaLowerBound[m_cRank] = lower;
m_iaUpperBound[m_cRank] = upper;
m_cRank++;
}
internal void SetFormat(char[] bFormat, int curIndex, int length)
{
// Cache the text display format for this SymbolType
char[] bFormatTemp = new char[length];
Array.Copy(bFormat, curIndex, bFormatTemp, 0, length);
m_bFormat = bFormatTemp;
}
#endregion
#region Type Overrides
internal override bool IsSzArray {
get {
if (m_cRank > 1)
return false;
return m_isSzArray;
}
}
public override Type MakePointerType()
{
return SymbolType.FormCompoundType((new string(m_bFormat) + "*").ToCharArray(), m_baseType, 0);
}
public override Type MakeByRefType()
{
return SymbolType.FormCompoundType((new string(m_bFormat) + "&").ToCharArray(), m_baseType, 0);
}
public override Type MakeArrayType()
{
return SymbolType.FormCompoundType((new string(m_bFormat) + "[]").ToCharArray(), m_baseType, 0);
}
public override Type MakeArrayType(int rank)
{
if (rank <= 0)
throw new IndexOutOfRangeException();
string szrank = "";
if (rank == 1) {
szrank = "*";
}
else {
for (int i = 1; i < rank; i++)
szrank += ",";
}
string s = String.Format(CultureInfo.InvariantCulture, "[{0}]", szrank);
// [,,]
SymbolType st = SymbolType.FormCompoundType((new string(m_bFormat) + s).ToCharArray(), m_baseType, 0) as SymbolType;
return st;
}
public override int GetArrayRank()
{
if (!IsArray)
throw new NotSupportedException(Environment.GetResourceString("NotSupported_SubclassOverride"));
return m_cRank;
}
internal override int MetadataTokenInternal {
get {
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
}
public override Guid GUID {
get {
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
}
public override object InvokeMember(string name, BindingFlags invokeAttr, Binder binder, object target, object[] args, ParameterModifier[] modifiers, CultureInfo culture, string[] namedParameters)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override Module Module {
get {
Type baseType;
for (baseType = m_baseType; baseType is SymbolType; baseType = ((SymbolType)baseType).m_baseType)
;
return baseType.Module;
}
}
public override Assembly Assembly {
get {
Type baseType;
for (baseType = m_baseType; baseType is SymbolType; baseType = ((SymbolType)baseType).m_baseType)
;
return baseType.Assembly;
}
}
public override RuntimeTypeHandle TypeHandle {
get {
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
}
public override string Name {
get {
Type baseType;
string sFormat = new string(m_bFormat);
for (baseType = m_baseType; baseType is SymbolType; baseType = ((SymbolType)baseType).m_baseType)
sFormat = new string(((SymbolType)baseType).m_bFormat) + sFormat;
return baseType.Name + sFormat;
}
}
public override string FullName {
get { return TypeNameBuilder.ToString(this, TypeNameBuilder.Format.FullName); }
}
public override string AssemblyQualifiedName {
get { return TypeNameBuilder.ToString(this, TypeNameBuilder.Format.AssemblyQualifiedName); }
}
public override string ToString()
{
return TypeNameBuilder.ToString(this, TypeNameBuilder.Format.ToString);
}
public override string Namespace {
get { return m_baseType.Namespace; }
}
public override Type BaseType {
get { return typeof(System.Array); }
}
protected override ConstructorInfo GetConstructorImpl(BindingFlags bindingAttr, Binder binder, CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
[System.Runtime.InteropServices.ComVisible(true)]
public override ConstructorInfo[] GetConstructors(BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
protected override MethodInfo GetMethodImpl(string name, BindingFlags bindingAttr, Binder binder, CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override MethodInfo[] GetMethods(BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override FieldInfo GetField(string name, BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override FieldInfo[] GetFields(BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override Type GetInterface(string name, bool ignoreCase)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override Type[] GetInterfaces()
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override EventInfo GetEvent(string name, BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override EventInfo[] GetEvents()
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
protected override PropertyInfo GetPropertyImpl(string name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override PropertyInfo[] GetProperties(BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override Type[] GetNestedTypes(BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override Type GetNestedType(string name, BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override MemberInfo[] GetMember(string name, MemberTypes type, BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override MemberInfo[] GetMembers(BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
[System.Runtime.InteropServices.ComVisible(true)]
public override InterfaceMapping GetInterfaceMap(Type interfaceType)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override EventInfo[] GetEvents(BindingFlags bindingAttr)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
protected override TypeAttributes GetAttributeFlagsImpl()
{
// Return the attribute flags of the base type?
Type baseType;
for (baseType = m_baseType; baseType is SymbolType; baseType = ((SymbolType)baseType).m_baseType)
;
return baseType.Attributes;
}
protected override bool IsArrayImpl()
{
return m_typeKind == TypeKind.IsArray;
}
protected override bool IsPointerImpl()
{
return m_typeKind == TypeKind.IsPointer;
}
protected override bool IsByRefImpl()
{
return m_typeKind == TypeKind.IsByRef;
}
protected override bool IsPrimitiveImpl()
{
return false;
}
protected override bool IsValueTypeImpl()
{
return false;
}
protected override bool IsCOMObjectImpl()
{
return false;
}
public override Type GetElementType()
{
return m_baseType;
}
protected override bool HasElementTypeImpl()
{
return m_baseType != null;
}
public override Type UnderlyingSystemType {
get { return this; }
}
public override object[] GetCustomAttributes(bool inherit)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override object[] GetCustomAttributes(Type attributeType, bool inherit)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
public override bool IsDefined(Type attributeType, bool inherit)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_NonReflectedType"));
}
#endregion
}
}