More flexible API for local variables;

Get type of local variable;  
Generalized getting of type/method attributes

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4825 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Control/StackFrame.cs

@@ -376,31 +376,15 @@ namespace Debugger
 		
 		#endregion
 		
-		/// <summary> Returns value of give local variable </summary>
-		public Value GetLocalVariableValue(ISymUnmanagedVariable symVar)
-		{
-			return new Value(this.AppDomain, new IdentifierExpression(symVar.Name), GetLocalVariableCorValue(symVar));
-		}
-		
-		ICorDebugValue GetLocalVariableCorValue(ISymUnmanagedVariable symVar)
-		{
-			try {
-				return CorILFrame.GetLocalVariable((uint)symVar.AddressField1);
-			} catch (COMException e) {
-				if ((uint)e.ErrorCode == 0x80131304) throw new GetValueException("Unavailable in optimized code");
-				throw;
-			}
-		}
-		
 		#region Convenience methods
 		
 		/// <summary> Get local variable with given name </summary>
 		/// <returns> Null if not found </returns>
 		public Value GetLocalVariableValue(string name)
 		{
-			foreach(ISymUnmanagedVariable symVar in this.MethodInfo.LocalVariables) {
-				if (symVar.Name == name) {
-					return GetLocalVariableValue(symVar);
+			foreach(LocalVariableInfo locVar in this.MethodInfo.LocalVariables) {
+				if (locVar.Name == name) {
+					return locVar.GetValue(this);
 				}
 			}
 			return null;
@@ -410,8 +394,8 @@ namespace Debugger
 		public List<Value> GetLocalVariableValues()
 		{
 			List<Value> values = new List<Value>();
-			foreach(ISymUnmanagedVariable symVar in this.MethodInfo.LocalVariables) {
-				values.Add(GetLocalVariableValue(symVar));
+			foreach(LocalVariableInfo locVar in this.MethodInfo.LocalVariables) {
+				values.Add(locVar.GetValue(this));
 			}
 			return values;
 		}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/ExpressionEvaluator.cs

@@ -115,7 +115,8 @@ namespace Debugger
 				val = (Value)expression.AcceptVisitor(this, null);
 				if (val != null && permRef)
 					val = val.GetPermanentReference();
-			} catch (GetValueException) {
+			} catch (GetValueException e) {
+				e.Expression = expression;
 				throw;
 			} catch (NotImplementedException e) {
 				throw new GetValueException(expression, "Language feature not implemented: " + e.Message);
@@ -125,7 +126,7 @@ namespace Debugger
 			}
 			
 			if (val != null && val.IsInvalid)
-				throw new DebuggerException("Expression is invalid right after evaluation");
+				throw new DebuggerException("Expression \"" + expression.PrettyPrint() + "\" is invalid right after evaluation");
 			
 			// Add the result to cache
 			context.Process.CachedExpressions[expression] = val;

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Interop/CorSym/ISymUnmanagedVariable.cs

@@ -17,11 +17,11 @@ namespace Debugger.Interop.CorSym
     public interface ISymUnmanagedVariable
     {
         [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
-        void GetName([In] uint cchName, out uint pcchName, [Out] IntPtr szName);
+        void GetName([In] uint cchName, out uint pcchName, [In] IntPtr szName);
         [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
         uint GetAttributes();
         [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
-        void GetSignature([In] uint cSig, out uint pcSig, [Out] IntPtr sig);
+        void GetSignature([In] uint cSig, out uint pcSig, [In] IntPtr sig);
         [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
         uint GetAddressKind();
         [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Metadata/DebugType.cs

@@ -721,6 +721,22 @@ namespace Debugger.MetaData
 			return (GetMembers(bindingFlags).Count > 0);
 		}
 		
+		public bool IsCompilerGenerated {
+			get {
+				if (this.IsClass || this.IsValueType) {
+					return MethodInfo.HasAnyAttribute(this.Module.MetaData, this.Token, typeof(System.Runtime.CompilerServices.CompilerGeneratedAttribute));
+				} else {
+					return false;
+				}
+			}
+		}
+		
+		public bool IsDisplayClass {
+			get {
+				return this.IsCompilerGenerated && this.Name.Contains("DisplayClass");
+			}
+		}
+		
 		public override string ToString()
 		{
 			return string.Format("{0}", this.FullName);

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Metadata/MethodInfo.cs

@@ -5,13 +5,14 @@
 //     <version>$Revision$</version>
 // </file>
 
-using ICSharpCode.NRefactory.Ast;
 using System;
 using System.Collections.Generic;
 using Debugger.Wrappers.CorDebug;
 using Debugger.Wrappers.CorSym;
 using Debugger.Wrappers.MetaData;
+using ICSharpCode.NRefactory.Ast;
 using Mono.Cecil.Signatures;
+using System.Runtime.InteropServices;
 
 namespace Debugger.MetaData
 {
@@ -311,32 +312,42 @@ namespace Debugger.MetaData
 			get {
 				if (hasDebuggerAttributeCache.HasValue) return hasDebuggerAttributeCache.Value;
 				
-				MetaDataImport metaData = this.Module.MetaData;
-				hasDebuggerAttributeCache = false;
-				// Look on the method
-				foreach(CustomAttributeProps ca in metaData.EnumCustomAttributeProps(methodProps.Token, 0)) {
+				hasDebuggerAttributeCache =
+					// Look on the method
+					HasAnyAttribute(this.Module.MetaData, methodProps.Token,
+					                typeof(System.Diagnostics.DebuggerStepThroughAttribute),
+					                typeof(System.Diagnostics.DebuggerNonUserCodeAttribute),
+					                typeof(System.Diagnostics.DebuggerHiddenAttribute))
+					||
+					// Look on the type
+					HasAnyAttribute(this.Module.MetaData, this.DeclaringType.Token,
+					                typeof(System.Diagnostics.DebuggerStepThroughAttribute),
+					                typeof(System.Diagnostics.DebuggerNonUserCodeAttribute),
+					                typeof(System.Diagnostics.DebuggerHiddenAttribute));
+				return hasDebuggerAttributeCache.Value;
+			}
+		}
+		
+		internal static bool HasAnyAttribute(MetaDataImport metaData, uint token, params Type[] wantedAttrTypes)
+		{
+			foreach(CustomAttributeProps ca in metaData.EnumCustomAttributeProps(token, 0)) {
+				CorTokenType tkType = (CorTokenType)(ca.Type & 0xFF000000);
+				string attributeName;
+				if (tkType == CorTokenType.MemberRef) {
 					MemberRefProps constructorMethod = metaData.GetMemberRefProps(ca.Type);
-					TypeRefProps attributeType = metaData.GetTypeRefProps(constructorMethod.DeclaringType);
-					if (attributeType.Name == "System.Diagnostics.DebuggerStepThroughAttribute" ||
-					    attributeType.Name == "System.Diagnostics.DebuggerNonUserCodeAttribute" ||
-					    attributeType.Name == "System.Diagnostics.DebuggerHiddenAttribute")
-					{
-						hasDebuggerAttributeCache = true;
-					}
+					attributeName = metaData.GetTypeRefProps(constructorMethod.DeclaringType).Name;
+				} else if (tkType == CorTokenType.MethodDef) {
+					MethodProps constructorMethod = metaData.GetMethodProps(ca.Type);
+					attributeName = metaData.GetTypeDefProps(constructorMethod.ClassToken).Name;
+				} else {
+					throw new DebuggerException("Not expected: " + tkType);
 				}
-				// Look on the type
-				foreach(CustomAttributeProps ca in metaData.EnumCustomAttributeProps(this.DeclaringType.Token, 0)) {
-					MemberRefProps constructorMethod = metaData.GetMemberRefProps(ca.Type);
-					TypeRefProps attributeType = metaData.GetTypeRefProps(constructorMethod.DeclaringType);
-					if (attributeType.Name == "System.Diagnostics.DebuggerStepThroughAttribute" ||
-					    attributeType.Name == "System.Diagnostics.DebuggerNonUserCodeAttribute" ||
-					    attributeType.Name == "System.Diagnostics.DebuggerHiddenAttribute")
-					{
-						hasDebuggerAttributeCache = true;
-					}
+				foreach(Type wantedAttrType in wantedAttrTypes) {
+					if (attributeName == wantedAttrType.FullName)
+						return true;
 				}
-				return hasDebuggerAttributeCache.Value;
 			}
+			return false;
 		}
 		
 		internal void MarkAsNonUserCode()
@@ -413,19 +424,19 @@ namespace Debugger.MetaData
 		}
 		
 		[Debugger.Tests.Ignore]
-		public List<ISymUnmanagedVariable> LocalVariables {
+		public List<LocalVariableInfo> LocalVariables {
 			get {
 				if (this.SymMethod != null) { // TODO: Is this needed?
 					return GetLocalVariablesInScope(this.SymMethod.RootScope);
 				} else {
-					return new List<ISymUnmanagedVariable>();
+					return new List<LocalVariableInfo>();
 				}
 			}
 		}
 		
 		public string[] LocalVariableNames {
 			get {
-				List<ISymUnmanagedVariable> vars = LocalVariables;
+				List<LocalVariableInfo> vars = this.LocalVariables;
 				List<string> names = new List<string>();
 				for(int i = 0; i < vars.Count; i++) {
 					names.Add(vars[i].Name);
@@ -435,12 +446,29 @@ namespace Debugger.MetaData
 			}
 		}
 		
-		List<ISymUnmanagedVariable> GetLocalVariablesInScope(ISymUnmanagedScope symScope)
+		List<LocalVariableInfo> GetLocalVariablesInScope(ISymUnmanagedScope symScope)
 		{
-			List<ISymUnmanagedVariable> vars = new List<ISymUnmanagedVariable>();
+			List<LocalVariableInfo> vars = new List<LocalVariableInfo>();
 			foreach (ISymUnmanagedVariable symVar in symScope.Locals) {
-				if (!symVar.Name.StartsWith("CS$")) { // TODO: Generalize
-					vars.Add(symVar);
+				int start;
+				SignatureReader sigReader = new SignatureReader(symVar.Signature);
+				LocalVarSig.LocalVariable locVarSig = sigReader.ReadLocalVariable(sigReader.Blob, 0, out start);
+				DebugType type = DebugType.CreateFromSignature(this.Module, locVarSig.Type, this.DeclaringType);
+				// Compiler generated?
+				if ((symVar.Attributes & 1) == 1) {
+					if (type.IsDisplayClass) {
+						
+					}
+				} else {
+					ISymUnmanagedVariable symVarCopy = symVar;
+					LocalVariableInfo locVar = new LocalVariableInfo(
+						symVar.Name,
+						type,
+						delegate(StackFrame context) {
+							return GetLocalVariableValue(context, symVarCopy);
+						}
+					);
+					vars.Add(locVar);
 				}
 			}
 			foreach(ISymUnmanagedScope childScope in symScope.Children) {
@@ -448,5 +476,51 @@ namespace Debugger.MetaData
 			}
 			return vars;
 		}
+		
+		static Value GetLocalVariableValue(StackFrame context, ISymUnmanagedVariable symVar)
+		{
+			ICorDebugValue corVal;
+			try {
+				corVal = context.CorILFrame.GetLocalVariable((uint)symVar.AddressField1);
+			} catch (COMException e) {
+				if ((uint)e.ErrorCode == 0x80131304) throw new GetValueException("Unavailable in optimized code");
+				throw;
+			}
+			return new Value(context.AppDomain, new IdentifierExpression(symVar.Name), corVal);
+		}
+	}
+	
+	public class LocalVariableInfo
+	{
+		public delegate Value LocalVariableValueGetter(StackFrame context);
+		
+		string name;
+		DebugType type;
+		LocalVariableValueGetter getter;
+		
+		public string Name {
+			get { return name; }
+		}
+		
+		public DebugType Type {
+			get { return type; }
+		}
+		
+		public LocalVariableInfo(string name, DebugType type, LocalVariableValueGetter getter)
+		{
+			this.name = name;
+			this.type = type;
+			this.getter = getter;
+		}
+		
+		public Value GetValue(StackFrame context)
+		{
+			return getter(context);
+		}
+		
+		public override string ToString()
+		{
+			return this.Type.ToString() + " " + this.Name;
+		}
 	}
 }

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Mono.Cecil/Mono.Cecil.Signatures/SignatureReader.cs

@@ -41,6 +41,12 @@ namespace Mono.Cecil.Signatures {
 		byte [] m_blobData;
 		IDictionary m_signatures;
 		
+		public byte[] Blob {
+			get {
+				return m_blobData;
+			}
+		}
+		
 		public SignatureReader (byte [] blobData)
 		{
 			m_blobData = blobData;
@@ -325,7 +331,7 @@ namespace Mono.Cecil.Signatures {
 			return types;
 		}
 
-		LocalVarSig.LocalVariable ReadLocalVariable (byte [] data, int pos, out int start)
+		public LocalVarSig.LocalVariable ReadLocalVariable (byte [] data, int pos, out int start)
 		{
 			start = pos;
 			LocalVarSig.LocalVariable lv = new LocalVarSig.LocalVariable ();

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Wrappers/CorDebug/ICorDebugGenericValue.cs

@@ -16,6 +16,7 @@ namespace Debugger.Wrappers.CorDebug
 	{
 		public unsafe Byte[] RawValue {
 			get {
+				// TODO: Unset fixing insead
 				Byte[] retValue = new Byte[(int)Size];
 				IntPtr pValue = Marshal.AllocHGlobal(retValue.Length);
 				GetValue(pValue);

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Wrappers/CorSym/ISymUnmanagedVariable.cs

@@ -18,6 +18,22 @@ namespace Debugger.Wrappers.CorSym
 				return Util.GetString(GetName);
 			}
 		}
+		
+		const int defaultSigSize = 8;
+		
+		public unsafe byte[] Signature {
+			get {
+				byte[] sig = new byte[defaultSigSize];
+				uint acualSize;
+				fixed(byte* pSig = sig)
+					this.GetSignature((uint)sig.Length, out acualSize, new IntPtr(pSig));
+				Array.Resize(ref sig, (int)acualSize);
+				if (acualSize > defaultSigSize)
+					fixed(byte* pSig = sig)
+						this.GetSignature((uint)sig.Length, out acualSize, new IntPtr(pSig));
+				return sig;
+			}
+		}
 	}
 }