protected override bool CheckEmpty(WriterMethodBuilderContext context, GroboIL.Label notEmptyLabel)
{
context.LoadObjByRef(); // stack: [&obj]
context.Il.Call(Type.GetProperty("HasValue").GetGetMethod()); // stack: obj.HasValue
context.Il.Brtrue(notEmptyLabel); // if(obj.HasValue) goto notEmpty;
return(true);
}
private static void EmitNullableBne(GroboIL il, MethodInfo getMethod, GroboIL.Label returnFalse)
{
// a.GetValueOrDefault() == b.GetValueOrDefault() && a.HasValue == b.HasValue;
var type = getMethod.ReturnType;
var getValueOrDefault = type.GetMethod("GetValueOrDefault", new Type[0]);
var hasValue = type.GetMethod("get_HasValue");
var a = il.DeclareLocal(type);
var b = il.DeclareLocal(type);
il.Ldarg(0);
il.Call(getMethod);
il.Stloc(a);
il.Ldarg(1);
il.Call(getMethod);
il.Stloc(b);
il.Ldloca(a);
il.Call(getValueOrDefault);
il.Ldloca(b);
il.Call(getValueOrDefault);
il.Bne_Un(returnFalse);
il.Ldloca(a);
il.Call(hasValue);
il.Ldloca(b);
il.Call(hasValue);
il.Bne_Un(returnFalse);
}
private static void EmitSwitch <T>(TrieNode node, EmittingContext context)
{
var il = context.Il;
var curChar = context.CurChar;
int n = CalcSize(node.children.Keys.ToArray());
var defaultLabel = il.DefineLabel("default");
var labels = new GroboIL.Label[n];
for (int i = 0; i < labels.Length; ++i)
{
labels[i] = defaultLabel;
}
foreach (var key in node.children.Keys)
{
labels[key % n] = il.DefineLabel("case_" + key);
}
il.Ldloc(curChar); // stack: [curChar]
il.Ldc_I4(n); // stack: [curChar, n]
il.Rem(false); // stack: [curChar % n]
il.Switch(labels); // goto labels[curChar % n]; stack: []
il.Br(defaultLabel); // default;
foreach (var pair in node.children)
{
il.MarkLabel(labels[pair.Key % n]); // case_{key}; stack: []
InlineTrie <T>(pair.Value, context);
}
il.MarkLabel(defaultLabel);
il.Ldc_I4(0); // stack: [false]
il.Ret();
}
protected void SaveOrCheck(GroboIL il, EvaluationStack stack, GroboIL.Label label)
{
ESType[] labelStack;
if (!il.labelStacks.TryGetValue(label, out labelStack))
{
il.labelStacks.Add(label, stack.Reverse().ToArray());
Propogate(il, il.ilCode.GetLabelLineNumber(label), stack);
}
else
{
ESType[] merged;
var comparisonResult = CompareStacks(stack.Reverse().ToArray(), labelStack, out merged);
switch (comparisonResult)
{
case StacksComparisonResult.Equal:
return;
case StacksComparisonResult.Inconsistent:
ThrowError(il, string.Format("Inconsistent stack for the label '{0}'{1}Stack #1: {2}{1}Stack #2: {3}", label.Name, Environment.NewLine, stack, new EvaluationStack(labelStack)));
break;
case StacksComparisonResult.Equivalent:
il.labelStacks[label] = merged;
Propogate(il, il.ilCode.GetLabelLineNumber(label), new EvaluationStack(merged));
break;
}
}
}
// todo обобщить
private static void EmitExpressionAsVoid(Expression node, EmittingContext context)
{
var il = context.Il;
GroboIL.Label skipLabel = context.CanReturn ? il.DefineLabel("skip") : null;
Type resultType;
bool skipLabelUsed = ExpressionEmittersCollection.Emit(node, context, skipLabel, ResultType.Void, false, out resultType);
if (skipLabelUsed)
{
var endLabel = il.DefineLabel("end");
if (resultType != typeof(void))
{
if (!resultType.IsStruct())
{
il.Pop();
}
else
{
using (var temp = context.DeclareLocal(resultType))
il.Stloc(temp);
}
}
il.Br(endLabel);
context.MarkLabelAndSurroundWithSP(skipLabel);
il.Pop();
context.MarkLabelAndSurroundWithSP(endLabel);
}
}
protected override bool EmitInternal(NewArrayExpression node, EmittingContext context, GroboIL.Label returnDefaultValueLabel, ResultType whatReturn, bool extend, out Type resultType)
{
var il = context.Il;
if (node.Expressions.Count != 1)
{
context.EmitLoadArguments(node.Expressions.ToArray());
il.Newobj(node.Type.GetConstructor(node.Expressions.Select(exp => exp.Type).ToArray()));
}
else
{
GroboIL.Label lengthIsNullLabel = context.CanReturn ? il.DefineLabel("lengthIsNull") : null;
Type lengthType;
var labelUsed = ExpressionEmittersCollection.Emit(node.Expressions.Single(), context, lengthIsNullLabel, out lengthType);
if (lengthType != typeof(int))
{
throw new InvalidOperationException("Cannot create an array with length of type '" + lengthType + "'");
}
if (labelUsed && context.CanReturn)
{
var lengthIsNotNullLabel = il.DefineLabel("lengthIsNotNull");
il.Br(lengthIsNotNullLabel);
context.MarkLabelAndSurroundWithSP(lengthIsNullLabel);
il.Pop();
il.Ldc_I4(0);
context.MarkLabelAndSurroundWithSP(lengthIsNotNullLabel);
}
il.Newarr(node.Type.GetElementType());
}
resultType = node.Type;
return(false);
}
public void EmitReturnDefaultValue(Type type, GroboIL.Label valueIsNullLabel, GroboIL.Label valueIsNotNullLabel)
{
Il.Br(valueIsNotNullLabel);
MarkLabelAndSurroundWithSP(valueIsNullLabel);
Il.Pop();
EmitLoadDefaultValue(type);
MarkLabelAndSurroundWithSP(valueIsNotNullLabel);
}
public static void ReadObjectNull(GroboIL il, GroboIL.Label finishMethod, GroboIL.Local buffer, GroboIL.Local offset, GroboIL.Local typeSize)
{
il.Ldloc(buffer);
il.Ldloc(offset);
il.Ldelem(typeof(byte));
WriteOffsetAppend(il, offset, 1);
il.Brtrue(finishMethod);
}
private static void EmitBne(GroboIL il, MethodInfo getMethod, GroboIL.Label returnFalse)
{
// a.Property == b.Property
il.Ldarg(0);
il.Call(getMethod);
il.Ldarg(1);
il.Call(getMethod);
il.Bne_Un(returnFalse);
}
protected override bool EmitInternal(BinaryExpression node, EmittingContext context, GroboIL.Label returnDefaultValueLabel, ResultType whatReturn, bool extend, out Type resultType)
{
if (node.Conversion != null)
{
throw new NotSupportedException("Coalesce with conversion is not supported");
}
// note ich: баг решарпера
// ReSharper disable HeuristicUnreachableCode
var left = node.Left;
var right = node.Right;
GroboIL il = context.Il;
GroboIL.Label valueIsNullLabel = il.DefineLabel("valueIsNull");
Type leftType;
bool labelUsed = ExpressionEmittersCollection.Emit(left, context, valueIsNullLabel, out leftType);
if (left.Type.IsValueType)
{
using (var temp = context.DeclareLocal(left.Type))
{
il.Stloc(temp);
il.Ldloca(temp);
}
}
labelUsed |= context.EmitNullChecking(left.Type, valueIsNullLabel);
if (left.Type.IsValueType)
{
if (!left.Type.IsNullable())
{
throw new InvalidOperationException("Type '" + left.Type + "' cannot be null");
}
if (node.Type != left.Type)
{
context.EmitValueAccess(left.Type);
}
else
{
il.Ldobj(left.Type);
}
}
var valueIsNotNullLabel = il.DefineLabel("valueIsNotNull");
il.Br(valueIsNotNullLabel);
if (labelUsed)
{
context.MarkLabelAndSurroundWithSP(valueIsNullLabel);
il.Pop();
}
Type rightType;
var result = ExpressionEmittersCollection.Emit(right, context, returnDefaultValueLabel, out rightType);
context.MarkLabelAndSurroundWithSP(valueIsNotNullLabel);
resultType = node.Type;
return(result);
// ReSharper restore HeuristicUnreachableCode
}
public int MarkLabel(GroboIL.Label label, ILInstructionComment comment)
{
if (labelLineNumbers.ContainsKey(label))
{
throw new InvalidOperationException(string.Format("The label '{0}' has already been marked", label.Name));
}
labelLineNumbers.Add(label, Count);
instructions.Add(new ILInstruction(InstructionKind.Label, default(OpCode), new LabelILInstructionParameter(label), comment));
return(Count++);
}
public static bool Emit(Expression node, EmittingContext context, GroboIL.Label returnDefaultValueLabel, ResultType whatReturn, bool extend, out Type resultType)
{
IExpressionEmitter emitter;
if (!expressionEmitters.TryGetValue(node.NodeType, out emitter))
{
throw new NotSupportedException("Node type '" + node.NodeType + "' is not supported");
}
return(emitter.Emit(node, context, returnDefaultValueLabel, whatReturn, extend, out resultType));
}
/// <summary>
/// Checks whether <c>obj</c> is empty
/// </summary>
/// <param name="context">Current context</param>
/// <param name="notEmptyLabel">Label where to go if <c>obj</c> is not empty</param>
/// <returns>true if <c>obj</c> can be empty</returns>
protected virtual bool CheckEmpty(SizeCounterMethodBuilderContext context, GroboIL.Label notEmptyLabel)
{
if (Type.IsValueType)
{
return(false);
}
context.LoadObj(); // stack: [obj]
context.Il.Brtrue(notEmptyLabel); // if(obj != null) goto notEmpty;
return(true);
}
private static void EmitNullableEquals(GroboIL il, MethodInfo getMethod, GroboIL.Label returnFalse)
{
// a.Equals(b)
var type = getMethod.ReturnType;
var local = il.DeclareLocal(type);
il.Ldarg(0);
il.Call(getMethod);
il.Stloc(local);
il.Ldloca(local);
il.Ldarg(1);
il.Call(getMethod);
il.Box(type);
il.Call(ObjectEquals, type);
il.Brfalse(returnFalse);
}
private void Visit(ForStatement stmt)
{
var loopStartLabel = Generator.DefineLabel("loopstart");
var indexLocal = Local(stmt.VarName);
var toLocal = Generator.DeclareLocal(typeof(ulong), "end");
var previousEndLabel = CurrentLoopEndLabel;
var endLabel = CurrentLoopEndLabel = Generator.DefineLabel("forend");
Visit(stmt.From);
Generator.Dup();
Generator.Ldobj(typeof(BitsValue));
Generator.Stloc(indexLocal);
Visit(stmt.To);
BitsValueToNumber();
Generator.Stloc(toLocal);
BitsValueToNumber();
Generator.MarkLabel(loopStartLabel);
Visit(stmt.Body);
// Increment index
Generator.Ldc_I8(1);
Generator.Conv <ulong>();
Generator.Add();
NumberToBitsValue();
Generator.Ldobj(typeof(BitsValue));
Generator.Stloc(indexLocal);
// Check index == max, if true branch to end
Generator.Ldloca(indexLocal);
BitsValueToNumber();
Generator.Dup();
Generator.Ldloc(toLocal);
Generator.Bne_Un(loopStartLabel);
Generator.MarkLabel(endLabel);
CurrentLoopEndLabel = previousEndLabel;
Generator.Pop();
}
protected override bool CheckEmpty(WriterMethodBuilderContext context, GroboIL.Label notEmptyLabel)
{
context.LoadObj(); // stack: [obj]
if (context.Context.GroBufWriter.Options.HasFlag(GroBufOptions.WriteEmptyObjects))
{
context.Il.Brtrue(notEmptyLabel); // if(obj != null) goto notEmpty;
}
else
{
var emptyLabel = context.Il.DefineLabel("empty");
context.Il.Brfalse(emptyLabel); // if(obj == null) goto empty;
context.LoadObj(); // stack: [obj]
context.Il.Ldfld(Type.GetPrivateInstanceField(PlatformHelpers.HashtableCountFieldNames)); // stack: [obj.Count]
context.Il.Brtrue(notEmptyLabel); // if(obj.Count != 0) goto notEmpty;
context.Il.MarkLabel(emptyLabel);
}
return(true);
}
protected override bool CheckEmpty(WriterMethodBuilderContext context, GroboIL.Label notEmptyLabel)
{
context.LoadObj(); // stack: [obj]
if (context.Context.GroBufWriter.Options.HasFlag(GroBufOptions.WriteEmptyObjects))
{
context.Il.Brtrue(notEmptyLabel); // if(obj != null) goto notEmpty;
}
else
{
var emptyLabel = context.Il.DefineLabel("empty");
context.Il.Brfalse(emptyLabel); // if(obj == null) goto empty;
context.LoadObj(); // stack: [obj]
context.Il.Call(Type.GetProperty("Count", BindingFlags.Instance | BindingFlags.Public).GetGetMethod()); // stack: [&result[index], obj.Count]
context.Il.Brtrue(notEmptyLabel); // if(obj.Count != 0) goto notEmpty;
context.Il.MarkLabel(emptyLabel);
}
return(true);
}
protected override bool CheckEmpty(SizeCounterMethodBuilderContext context, GroboIL.Label notEmptyLabel)
{
context.LoadObj(); // stack: [obj]
if (context.Context.GroBufWriter.Options.HasFlag(GroBufOptions.WriteEmptyObjects))
{
context.Il.Brtrue(notEmptyLabel); // if(obj != null) goto notEmpty;
}
else
{
var emptyLabel = context.Il.DefineLabel("empty");
context.Il.Brfalse(emptyLabel); // if(obj == null) goto empty;
context.LoadObj(); // stack: [obj]
context.Il.Ldfld(Type.GetField("_size", BindingFlags.Instance | BindingFlags.NonPublic)); // stack: [obj.Count]
context.Il.Brtrue(notEmptyLabel); // if(obj.Count != 0) goto notEmpty;
context.Il.MarkLabel(emptyLabel);
}
return(true);
}
protected override bool CheckEmpty(WriterMethodBuilderContext context, GroboIL.Label notEmptyLabel)
{
context.LoadObj(); // stack: [obj]
if (context.Context.GroBufWriter.Options.HasFlag(GroBufOptions.WriteEmptyObjects))
{
context.Il.Brtrue(notEmptyLabel); // if(obj != null) goto notEmpty;
}
else
{
var emptyLabel = context.Il.DefineLabel("empty");
context.Il.Brfalse(emptyLabel); // if(obj == null) goto empty;
context.LoadObj(); // stack: [obj]
context.Il.Ldlen(); // stack: [obj.Length]
context.Il.Brtrue(notEmptyLabel); // if(obj.Length != 0) goto notEmpty;
context.Il.MarkLabel(emptyLabel);
}
return(true);
}
private void Visit(WhileStatement stmt)
{
var previousEndLabel = CurrentLoopEndLabel;
var loopStartLabel = Generator.DefineLabel("whilestart");
var loopEndLabel = CurrentLoopEndLabel = Generator.DefineLabel("whileend");
Generator.MarkLabel(loopStartLabel);
Visit(stmt.Condition);
BitsValueToNumber();
Generator.Brfalse(loopEndLabel);
Visit(stmt.Body);
Generator.Br(loopStartLabel);
Generator.MarkLabel(loopEndLabel);
CurrentLoopEndLabel = previousEndLabel;
}
public static void WriteObjectNull(GroboIL il, GroboIL.Label finishMethod, GroboIL.Local buffer, GroboIL.Local offset, GroboIL.Local typeSize)
{
var _null = il.DeclareLocal(typeof(bool));
il.Ldnull();
il.Ceq();
il.Stloc(_null);
il.Ldloc(buffer);
il.Ldloc(offset);
il.Ldloc(_null);
il.Stelem(typeof(byte));
WriteOffsetAppend(il, offset, 1);
il.Ldloc(_null);
il.Brtrue(finishMethod);
}
protected override bool CheckEmpty(WriterMethodBuilderContext context, GroboIL.Label notEmptyLabel)
{
var il = context.Il;
context.LoadObjByRef(); // stack: [ref obj]
il.Ldfld(arrayField); // stack: [obj._array]
if (context.Context.GroBufWriter.Options.HasFlag(GroBufOptions.WriteEmptyObjects))
{
il.Brtrue(notEmptyLabel); // if(obj._array != null) goto notEmpty;
}
else
{
var emptyLabel = il.DefineLabel("empty");
il.Brfalse(emptyLabel); // if(obj._array == null) goto empty;
context.LoadObjByRef(); // stack: [ref obj]
il.Ldfld(countField); // stack: [obj._count]
il.Brtrue(notEmptyLabel); // if(obj._count != 0) goto notEmpty;
il.MarkLabel(emptyLabel);
}
return(true);
}
private static void EmitLoadIndex(Expression index, EmittingContext context, Type arrayType)
{
GroboIL il = context.Il;
GroboIL.Label indexIsNullLabel = context.CanReturn ? il.DefineLabel("indexIsNull") : null;
Type indexType;
bool labelUsed = ExpressionEmittersCollection.Emit(index, context, indexIsNullLabel, out indexType); // stack: [array, index]
if (indexType != typeof(int))
{
throw new InvalidOperationException("Unable to perform array index operator to type '" + arrayType + "'");
}
if (labelUsed && context.CanReturn)
{
var indexIsNotNullLabel = il.DefineLabel("indexIsNotNull");
il.Br(indexIsNotNullLabel);
context.MarkLabelAndSurroundWithSP(indexIsNullLabel);
il.Pop();
il.Ldc_I4(0);
context.MarkLabelAndSurroundWithSP(indexIsNotNullLabel);
}
}
public static void WriteNullableType <T>(GroboIL il, GroboIL.Label finishMethod, GroboIL.Local buffer, GroboIL.Local offset)
where T : struct
{
var _null = il.DeclareLocal(typeof(bool));
il.Call(typeof(Nullable <T>).GetProperty("HasValue").GetGetMethod());
il.Ldc_I4(0);
//il.Ldnull();
il.Ceq();
il.Stloc(_null);
il.Ldloc(buffer);
il.Ldloc(offset);
il.Ldloc(_null);
il.Stelem(typeof(byte));
WriteOffsetAppend(il, offset, 1);
il.Ldloc(_null);
il.Brtrue(finishMethod);
}
public bool EmitNullChecking(Type type, GroboIL.Label objIsNullLabel)
{
if (!type.IsValueType)
{
Il.Dup(); // stack: [obj, obj]
Il.Brfalse(objIsNullLabel); // if(obj == null) goto returnDefaultValue; stack: [obj]
return(true);
}
if (type.IsNullable())
{
using (var temp = DeclareLocal(type.MakeByRefType()))
{
Il.Stloc(temp);
Il.Ldnull();
Il.Ldloc(temp);
EmitHasValueAccess(type);
Il.Brfalse(objIsNullLabel);
Il.Pop();
Il.Ldloc(temp);
}
return(true);
}
return(false);
}
protected override bool EmitInternal(TryExpression node, EmittingContext context, GroboIL.Label returnDefaultValueLabel, ResultType whatReturn, bool extend, out Type resultType)
{
var il = context.Il;
il.BeginExceptionBlock();
returnDefaultValueLabel = context.CanReturn ? il.DefineLabel("returnDefaultValue") : null;
bool returnDefaultValueLabelUsed = ExpressionEmittersCollection.Emit(node.Body, context, returnDefaultValueLabel, whatReturn, extend, out resultType);
EmittingContext.LocalHolder retValue = null;
var doneLabel = il.DefineLabel("done");
if (resultType == typeof(void))
{
if (returnDefaultValueLabelUsed)
{
context.MarkLabelAndSurroundWithSP(returnDefaultValueLabel);
}
il.Leave(doneLabel);
}
else
{
retValue = context.DeclareLocal(resultType);
il.Stloc(retValue);
il.Leave(doneLabel);
if (returnDefaultValueLabelUsed)
{
context.MarkLabelAndSurroundWithSP(returnDefaultValueLabel);
if (resultType.IsValueType)
{
il.Ldloca(retValue);
il.Initobj(resultType);
}
else
{
il.Ldnull();
il.Stloc(retValue);
}
il.Leave(doneLabel);
}
}
foreach (var catchBlock in node.Handlers)
{
bool disposeVariable = false;
var variable = catchBlock.Variable;
if (catchBlock.Filter == null)
{
il.BeginCatchBlock(catchBlock.Test);
if (variable == null)
{
il.Pop();
}
else
{
// todo вызвать ф-цию из AssignExpressionEmitter
var index = Array.IndexOf(context.Parameters, variable);
if (index >= 0)
{
il.Starg(index);
}
else
{
GroboIL.Local local;
if (!context.VariablesToLocals.TryGetValue(variable, out local))
{
local = context.DeclareLocal(variable.Type);
context.VariablesToLocals.Add(variable, local);
context.Variables.Push(variable);
disposeVariable = true;
}
il.Stloc(local);
}
}
}
else
{
il.BeginExceptFilterBlock();
il.Isinst(catchBlock.Test);
il.Dup();
var rightTypeLabel = il.DefineLabel("rightType");
il.Brtrue(rightTypeLabel);
il.Pop();
il.Ldc_I4(0);
var endFilterLabel = il.DefineLabel("endFilter");
il.Br(endFilterLabel);
context.MarkLabelAndSurroundWithSP(rightTypeLabel);
if (variable == null)
{
il.Pop();
}
else
{
// todo вызвать ф-цию из AssignExpressionEmitter
var index = Array.IndexOf(context.Parameters, variable);
if (index >= 0)
{
il.Starg(index);
}
else
{
GroboIL.Local local;
if (!context.VariablesToLocals.TryGetValue(variable, out local))
{
local = string.IsNullOrEmpty(variable.Name)
? context.Il.DeclareLocal(variable.Type)
: context.Il.DeclareLocal(variable.Type, variable.Name, appendUniquePrefix: false);
if (context.DebugInfoGenerator != null)
{
local.SetLocalSymInfo(local.Name);
}
context.VariablesToLocals.Add(variable, local);
context.Variables.Push(variable);
disposeVariable = true;
}
il.Stloc(local);
}
}
GroboIL.Label returnFalseLabel = context.CanReturn ? il.DefineLabel("returnFalse") : null;
Type filterResultType;
bool returnFalseLabelUsed = ExpressionEmittersCollection.Emit(catchBlock.Filter, context, returnFalseLabel, out filterResultType);
if (returnFalseLabelUsed)
{
il.Br(endFilterLabel);
context.MarkLabelAndSurroundWithSP(returnFalseLabel);
il.Pop();
il.Ldc_I4(0);
}
context.MarkLabelAndSurroundWithSP(endFilterLabel);
il.BeginCatchBlock(null);
il.Pop();
}
context.EmitLoadArguments(catchBlock.Body);
if (catchBlock.Body.Type != typeof(void))
{
il.Stloc(retValue);
}
if (disposeVariable)
{
context.VariablesToLocals.Remove(variable);
context.Variables.Pop();
}
}
if (node.Fault != null)
{
il.BeginFaultBlock();
EmitExpressionAsVoid(node.Fault, context);
}
if (node.Finally != null)
{
il.BeginFinallyBlock();
EmitExpressionAsVoid(node.Finally, context);
}
il.EndExceptionBlock();
context.MarkLabelAndSurroundWithSP(doneLabel);
if (retValue != null)
{
il.Ldloc(retValue);
retValue.Dispose();
}
return(false);
}
protected override bool EmitInternal(UnaryExpression node, EmittingContext context, GroboIL.Label returnDefaultValueLabel, ResultType whatReturn, bool extend, out Type resultType)
{
Type operandType;
var result = ExpressionEmittersCollection.Emit(node.Operand, context, returnDefaultValueLabel, ResultType.Value, extend, out operandType);
GroboIL il = context.Il;
if (node.NodeType == ExpressionType.IsTrue || node.NodeType == ExpressionType.IsFalse)
{
if (!operandType.IsNullable())
{
if (node.Method != null)
{
il.Call(node.Method);
}
else if (operandType == typeof(bool))
{
if (node.NodeType == ExpressionType.IsFalse)
{
il.Ldc_I4(1);
il.Xor();
}
}
else
{
throw new InvalidOperationException("Cannot perform operation '" + node.NodeType + "' to a type '" + operandType + "'");
}
}
else
{
using (var temp = context.DeclareLocal(operandType))
{
il.Stloc(temp);
il.Ldloca(temp);
context.EmitHasValueAccess(operandType);
var returnFalseLabel = il.DefineLabel("returnFalse");
il.Brfalse(returnFalseLabel);
il.Ldloca(temp);
context.EmitValueAccess(operandType);
if (node.Method != null)
{
il.Call(node.Method);
}
else if (operandType == typeof(bool?))
{
if (node.NodeType == ExpressionType.IsFalse)
{
il.Ldc_I4(1);
il.Xor();
}
}
else
{
throw new InvalidOperationException("Cannot perform operation '" + node.NodeType + "' to a type '" + operandType + "'");
}
var doneLabel = il.DefineLabel("done");
il.Br(doneLabel);
context.MarkLabelAndSurroundWithSP(returnFalseLabel);
il.Ldc_I4(0);
context.MarkLabelAndSurroundWithSP(doneLabel);
}
}
}
else
{
if (!operandType.IsNullable())
{
if (node.Method != null)
{
il.Call(node.Method);
}
else
{
if (operandType.IsStruct())
{
throw new InvalidOperationException("Cannot perform operation '" + node.NodeType + "' to a struct '" + operandType + "'");
}
switch (node.NodeType)
{
case ExpressionType.UnaryPlus:
break;
case ExpressionType.Negate:
il.Neg();
break;
case ExpressionType.NegateChecked:
using (var temp = context.DeclareLocal(operandType))
{
il.Stloc(temp);
il.Ldc_I4(0);
context.EmitConvert(typeof(int), operandType);
il.Ldloc(temp);
il.Sub_Ovf(operandType.Unsigned());
}
break;
case ExpressionType.Increment:
il.Ldc_I4(1);
context.EmitConvert(typeof(int), operandType);
il.Add();
break;
case ExpressionType.Decrement:
il.Ldc_I4(1);
context.EmitConvert(typeof(int), operandType);
il.Sub();
break;
case ExpressionType.OnesComplement:
il.Not();
break;
default:
throw new InvalidOperationException("Node type '" + node.NodeType + "' invalid at this point");
}
}
}
else
{
using (var temp = context.DeclareLocal(operandType))
{
il.Stloc(temp);
il.Ldloca(temp);
context.EmitHasValueAccess(operandType);
var returnNullLabel = il.DefineLabel("returnLabel");
il.Brfalse(returnNullLabel);
Type argumentType = operandType.GetGenericArguments()[0];
if (node.Method != null)
{
il.Ldloca(temp);
context.EmitValueAccess(operandType);
il.Call(node.Method);
}
else
{
switch (node.NodeType)
{
case ExpressionType.UnaryPlus:
il.Ldloca(temp);
context.EmitValueAccess(operandType);
break;
case ExpressionType.Negate:
il.Ldloca(temp);
context.EmitValueAccess(operandType);
il.Neg();
break;
case ExpressionType.NegateChecked:
il.Ldc_I4(0);
context.EmitConvert(typeof(int), argumentType);
il.Ldloca(temp);
context.EmitValueAccess(operandType);
il.Sub_Ovf(argumentType.Unsigned());
break;
case ExpressionType.Increment:
il.Ldloca(temp);
context.EmitValueAccess(operandType);
il.Ldc_I4(1);
context.EmitConvert(typeof(int), argumentType);
il.Add();
break;
case ExpressionType.Decrement:
il.Ldloca(temp);
context.EmitValueAccess(operandType);
il.Ldc_I4(1);
context.EmitConvert(typeof(int), argumentType);
il.Sub();
break;
case ExpressionType.OnesComplement:
il.Ldloca(temp);
context.EmitValueAccess(operandType);
il.Not();
break;
default:
throw new InvalidOperationException("Node type '" + node.NodeType + "' invalid at this point");
}
}
il.Newobj(operandType.GetConstructor(new[] { argumentType }));
var doneLabel = il.DefineLabel("done");
il.Br(doneLabel);
context.MarkLabelAndSurroundWithSP(returnNullLabel);
context.EmitLoadDefaultValue(operandType);
context.MarkLabelAndSurroundWithSP(doneLabel);
}
}
}
resultType = node.Type;
return(result);
}
public int GetLabelLineNumber(GroboIL.Label label)
{
int result;
return(labelLineNumbers.TryGetValue(label, out result) ? result : -1);
}
private static void EmitStatic(GroboIL il, MethodInfo getMethod, MethodInfo staticMethod, GroboIL.Label returnFalse)
{
// Equals(a.Property, b.Property)
il.Ldarg(0);
il.Call(getMethod);
il.Ldarg(1);
il.Call(getMethod);
il.Call(staticMethod);
il.Brfalse(returnFalse);
}
protected override bool EmitInternal(LambdaExpression node, EmittingContext context, GroboIL.Label returnDefaultValueLabel, ResultType whatReturn, bool extend, out Type resultType)
{
var parameterTypes = node.Parameters.Select(parameter => parameter.Type).ToArray();
Type[] constantTypes;
var compiledLambda = CompileAndLoadConstants(node, context, out constantTypes);
var il = context.Il;
Type rawSubLambdaType;
if (!Extensions.IsMono)
{
context.LoadCompiledLambdaPointer(compiledLambda);
rawSubLambdaType = typeof(IntPtr);
}
else
{
rawSubLambdaType = Extensions.GetDelegateType(constantTypes.Concat(parameterTypes).ToArray(), node.ReturnType);
context.LoadCompiledLambda(compiledLambda);
il.Castclass(rawSubLambdaType);
}
resultType = Extensions.GetDelegateType(parameterTypes, node.ReturnType);
var types = constantTypes.Concat(new[] { rawSubLambdaType }).ToArray();
var module = (ModuleBuilder)(context.TypeBuilder == null ? null : context.TypeBuilder.Module);
var subLambdaInvoker = DynamicMethodInvokerBuilder.BuildDynamicMethodInvoker(module, constantTypes, node.ReturnType, parameterTypes);
il.Newobj(subLambdaInvoker.GetConstructor(types));
il.Ldftn(subLambdaInvoker.GetMethod("Invoke"));
il.Newobj(resultType.GetConstructor(new[] { typeof(object), typeof(IntPtr) }));
return(false);
}