1
0
NaN
/// <summary> /// Generates IL for the script. /// </summary> /// <param name="generator"> The generator to output the CIL to. </param> /// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param> protected override void GenerateCode(ILGenerator generator, OptimizationInfo optimizationInfo) { // Method signature: object FunctionDelegate(Compiler.Scope scope, object thisObject, Library.FunctionInstance functionObject, object[] arguments) // Initialize the scope (note: the initial scope for a function is always declarative). this.InitialScope.GenerateScopeCreation(generator, optimizationInfo); // Verify the scope is correct. VerifyScope(generator); // In ES3 the "this" value must be an object. See 10.4.3 in the spec. if (this.StrictMode == false && this.MethodOptimizationHints.HasThis == true) { // if (thisObject == null || thisObject == Null.Value || thisObject == Undefined.Value) EmitHelpers.LoadThis(generator); generator.LoadNull(); generator.CompareEqual(); EmitHelpers.LoadThis(generator); EmitHelpers.EmitNull(generator); generator.CompareEqual(); generator.BitwiseOr(); EmitHelpers.LoadThis(generator); EmitHelpers.EmitUndefined(generator); generator.CompareEqual(); generator.BitwiseOr(); // { var startOfFalse = generator.CreateLabel(); generator.BranchIfFalse(startOfFalse); // thisObject = engine.Global; EmitHelpers.LoadScriptEngine(generator); generator.Call(ReflectionHelpers.ScriptEngine_Global); // } else { var endOfIf = generator.CreateLabel(); generator.Branch(endOfIf); generator.DefineLabelPosition(startOfFalse); // thisObject = TypeConverter.ToObject(thisObject); EmitHelpers.LoadThis(generator); EmitConversion.ToObject(generator, PrimitiveType.Any); // } generator.DefineLabelPosition(endOfIf); EmitHelpers.StoreThis(generator); } // Transfer the function name into the scope. if (string.IsNullOrEmpty(this.Name) == false && this.ArgumentNames.Contains(this.Name) == false && optimizationInfo.MethodOptimizationHints.HasVariable(this.Name)) { EmitHelpers.LoadFunction(generator); var functionName = new NameExpression(this.InitialScope, this.Name); functionName.GenerateSet(generator, optimizationInfo, PrimitiveType.Any, false); } // Transfer the arguments object into the scope. if (this.MethodOptimizationHints.HasArguments == true && this.ArgumentNames.Contains("arguments") == false) { // prototype EmitHelpers.LoadScriptEngine(generator); generator.Call(ReflectionHelpers.ScriptEngine_Object); generator.Call(ReflectionHelpers.FunctionInstance_InstancePrototype); // callee EmitHelpers.LoadFunction(generator); generator.CastClass(typeof(Library.UserDefinedFunction)); // scope EmitHelpers.LoadScope(generator); generator.CastClass(typeof(DeclarativeScope)); // argumentValues EmitHelpers.LoadArgumentsArray(generator); generator.NewObject(ReflectionHelpers.Arguments_Constructor); var arguments = new NameExpression(this.InitialScope, "arguments"); arguments.GenerateSet(generator, optimizationInfo, PrimitiveType.Any, false); } // Transfer the argument values into the scope. // Note: the arguments array can be smaller than expected. if (this.ArgumentNames.Count > 0) { var endOfArguments = generator.CreateLabel(); for (int i = 0; i < this.ArgumentNames.Count; i++) { // Check if a duplicate argument name exists. bool duplicate = false; for (int j = i + 1; j < this.ArgumentNames.Count; j++) if (this.ArgumentNames[i] == this.ArgumentNames[j]) { duplicate = true; break; } if (duplicate == true) continue; // Check if an array element exists. EmitHelpers.LoadArgumentsArray(generator); generator.LoadArrayLength(); generator.LoadInt32(i); generator.BranchIfLessThanOrEqual(endOfArguments); // Store the array element in the scope. EmitHelpers.LoadArgumentsArray(generator); generator.LoadInt32(i); generator.LoadArrayElement(typeof(object)); var argument = new NameExpression(this.InitialScope, this.ArgumentNames[i]); argument.GenerateSet(generator, optimizationInfo, PrimitiveType.Any, false); } generator.DefineLabelPosition(endOfArguments); } // Initialize any declarations. this.InitialScope.GenerateDeclarations(generator, optimizationInfo); //EmitHelpers.LoadScope(generator); //EmitConversion.ToObject(generator, PrimitiveType.Any); //generator.Pop(); // Generate code for the body of the function. this.AbstractSyntaxTree.GenerateCode(generator, optimizationInfo); // Define the return target - this is where the return statement jumps to. // ReturnTarget can be null if there were no return statements. if (optimizationInfo.ReturnTarget != null) generator.DefineLabelPosition(optimizationInfo.ReturnTarget); // Load the return value. If the variable is null, there were no return statements. if (optimizationInfo.ReturnVariable != null) // Return the value stored in the variable. Will be null if execution hits the end // of the function without encountering any return statements. generator.LoadVariable(optimizationInfo.ReturnVariable); else // There were no return statements - return null. generator.LoadNull(); }
/// <summary> /// Generates CIL for the relational operators. /// </summary> /// <param name="generator"> The generator to output the CIL to. </param> /// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param> private void GenerateRelational(ILGenerator generator, OptimizationInfo optimizationInfo) { // Get the statically-determined types of the left and right operands. PrimitiveType leftType = this.Left.ResultType; PrimitiveType rightType = this.Right.ResultType; // The relational operators compare strings if both of the operands are strings. if (leftType == PrimitiveType.String && rightType == PrimitiveType.String) { // Both of the operands are strings. // Load the left hand side operand onto the stack. this.Left.GenerateCode(generator, optimizationInfo); // Load the right hand side operand onto the stack. this.Right.GenerateCode(generator, optimizationInfo); // Compare the two strings. generator.Call(ReflectionHelpers.String_CompareOrdinal); switch (this.OperatorType) { case OperatorType.LessThan: generator.LoadInt32(0); generator.CompareLessThan(); break; case OperatorType.LessThanOrEqual: generator.LoadInt32(1); generator.CompareLessThan(); break; case OperatorType.GreaterThan: generator.LoadInt32(0); generator.CompareGreaterThan(); break; case OperatorType.GreaterThanOrEqual: generator.LoadInt32(-1); generator.CompareGreaterThan(); break; } } else if (leftType == PrimitiveType.Int32 && rightType == PrimitiveType.Int32) { // Both of the operands are integers. // Load the left hand side operand onto the stack. this.Left.GenerateCode(generator, optimizationInfo); // Load the right hand side operand onto the stack. this.Right.GenerateCode(generator, optimizationInfo); // Compare the two numbers. switch (this.OperatorType) { case OperatorType.LessThan: generator.CompareLessThan(); break; case OperatorType.GreaterThan: generator.CompareGreaterThan(); break; case OperatorType.LessThanOrEqual: // a <= b <--> (a > b) == false generator.CompareGreaterThan(); generator.LoadBoolean(false); generator.CompareEqual(); break; case OperatorType.GreaterThanOrEqual: // a >= b <--> (a < b) == false generator.CompareLessThan(); generator.LoadBoolean(false); generator.CompareEqual(); break; } } else if (PrimitiveTypeUtilities.IsNumeric(leftType) || PrimitiveTypeUtilities.IsNumeric(rightType)) { // At least one of the operands is a number. // Load the left hand side operand onto the stack. this.Left.GenerateCode(generator, optimizationInfo); // Convert the operand to a number. EmitConversion.ToNumber(generator, leftType); // Load the right hand side operand onto the stack. this.Right.GenerateCode(generator, optimizationInfo); // Convert the operand to a number. EmitConversion.ToNumber(generator, rightType); // Compare the two numbers. switch (this.OperatorType) { case OperatorType.LessThan: generator.CompareLessThan(); break; case OperatorType.GreaterThan: generator.CompareGreaterThan(); break; case OperatorType.LessThanOrEqual: // a <= b <--> (a > b) == false generator.CompareGreaterThanUnsigned(); generator.LoadBoolean(false); generator.CompareEqual(); break; case OperatorType.GreaterThanOrEqual: // a >= b <--> (a < b) == false generator.CompareLessThanUnsigned(); generator.LoadBoolean(false); generator.CompareEqual(); break; } } else { // It is unknown whether one of the operands is a string. // Load the left hand side operand onto the stack. this.Left.GenerateCode(generator, optimizationInfo); EmitConversion.ToAny(generator, leftType); // Load the right hand side operand onto the stack. this.Right.GenerateCode(generator, optimizationInfo); EmitConversion.ToAny(generator, rightType); switch (this.OperatorType) { case OperatorType.LessThan: generator.Call(ReflectionHelpers.TypeComparer_LessThan); break; case OperatorType.LessThanOrEqual: generator.Call(ReflectionHelpers.TypeComparer_LessThanOrEqual); break; case OperatorType.GreaterThan: generator.Call(ReflectionHelpers.TypeComparer_GreaterThan); break; case OperatorType.GreaterThanOrEqual: generator.Call(ReflectionHelpers.TypeComparer_GreaterThanOrEqual); break; } } }
/// <summary> /// Generates CIL for the expression. /// </summary> /// <param name="generator"> The generator to output the CIL to. </param> /// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param> public override void GenerateCode(ILGenerator generator, OptimizationInfo optimizationInfo) { // Special-case the delete operator. if (this.OperatorType == OperatorType.Delete) { GenerateDelete(generator, optimizationInfo); return; } // If a return value is not expected, generate only the side-effects. /*if (optimizationInfo.SuppressReturnValue == true) { this.GenerateSideEffects(generator, optimizationInfo); return; }*/ // Special-case the typeof operator. if (this.OperatorType == OperatorType.Typeof) { GenerateTypeof(generator, optimizationInfo); return; } // Load the operand onto the stack. this.Operand.GenerateCode(generator, optimizationInfo); // Convert the operand to the correct type. switch (this.OperatorType) { case OperatorType.Plus: case OperatorType.Minus: EmitConversion.ToNumber(generator, this.Operand.ResultType); break; case OperatorType.BitwiseNot: EmitConversion.ToInt32(generator, this.Operand.ResultType); break; case OperatorType.LogicalNot: EmitConversion.ToBool(generator, this.Operand.ResultType); break; } // Apply the operator. switch (this.OperatorType) { case OperatorType.Plus: break; case OperatorType.Minus: generator.Negate(); break; case OperatorType.BitwiseNot: generator.BitwiseNot(); break; case OperatorType.LogicalNot: generator.LoadBoolean(false); generator.CompareEqual(); break; case OperatorType.Void: generator.Pop(); EmitHelpers.EmitUndefined(generator); break; default: throw new NotImplementedException(string.Format("Unsupported operator {0}", this.OperatorType)); } }
/// <summary> /// Generates CIL for the expression. /// </summary> /// <param name="generator"> The generator to output the CIL to. </param> /// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param> public override void GenerateCode(ILGenerator generator, OptimizationInfo optimizationInfo) { // If a return value is not expected, generate only the side-effects. /*if (optimizationInfo.SuppressReturnValue == true) { this.GenerateSideEffects(generator, optimizationInfo); return; }*/ // Special case the addition operator. if (this.OperatorType == OperatorType.Add) { GenerateAdd(generator, optimizationInfo); return; } // Special case the instanceof operator. if (this.OperatorType == OperatorType.InstanceOf) { GenerateInstanceOf(generator, optimizationInfo); return; } // Special case the in operator. if (this.OperatorType == OperatorType.In) { GenerateIn(generator, optimizationInfo); return; } // Special case the relational operators. if (this.OperatorType == OperatorType.LessThan || this.OperatorType == OperatorType.LessThanOrEqual || this.OperatorType == OperatorType.GreaterThan || this.OperatorType == OperatorType.GreaterThanOrEqual) { GenerateRelational(generator, optimizationInfo); return; } // Special case the logical operators. if (this.OperatorType == OperatorType.LogicalAnd || this.OperatorType == OperatorType.LogicalOr) { GenerateLogical(generator, optimizationInfo); return; } // Load the left hand side onto the stack. this.Left.GenerateCode(generator, optimizationInfo); // Convert the left argument. switch (this.OperatorType) { // Arithmetic operations. case OperatorType.Subtract: case OperatorType.Multiply: case OperatorType.Divide: case OperatorType.Modulo: EmitConversion.ToNumber(generator, this.Left.ResultType); break; // Bitwise operations. case OperatorType.BitwiseAnd: case OperatorType.BitwiseOr: case OperatorType.BitwiseXor: case OperatorType.LeftShift: case OperatorType.SignedRightShift: case OperatorType.UnsignedRightShift: EmitConversion.ToInt32(generator, this.Left.ResultType); break; // Equality operations. case OperatorType.Equal: case OperatorType.StrictlyEqual: case OperatorType.NotEqual: case OperatorType.StrictlyNotEqual: EmitConversion.ToAny(generator, this.Left.ResultType); break; } // Load the right hand side onto the stack. this.Right.GenerateCode(generator, optimizationInfo); // Convert the right argument. switch (this.OperatorType) { // Arithmetic operations. case OperatorType.Subtract: case OperatorType.Multiply: case OperatorType.Divide: case OperatorType.Modulo: EmitConversion.ToNumber(generator, this.Right.ResultType); break; // Bitwise operations. case OperatorType.BitwiseAnd: case OperatorType.BitwiseOr: case OperatorType.BitwiseXor: EmitConversion.ToInt32(generator, this.Right.ResultType); break; case OperatorType.LeftShift: case OperatorType.SignedRightShift: case OperatorType.UnsignedRightShift: EmitConversion.ToUInt32(generator, this.Right.ResultType); generator.LoadInt32(0x1F); generator.BitwiseAnd(); break; // Equality operations. case OperatorType.Equal: case OperatorType.StrictlyEqual: case OperatorType.NotEqual: case OperatorType.StrictlyNotEqual: EmitConversion.ToAny(generator, this.Right.ResultType); break; } // Apply the operator. switch (this.OperatorType) { // Arithmetic operations. case OperatorType.Subtract: generator.Subtract(); break; case OperatorType.Multiply: generator.Multiply(); break; case OperatorType.Divide: generator.Divide(); break; case OperatorType.Modulo: generator.Remainder(); break; // Bitwise operations. case OperatorType.BitwiseAnd: generator.BitwiseAnd(); break; case OperatorType.BitwiseOr: generator.BitwiseOr(); break; case OperatorType.BitwiseXor: generator.BitwiseXor(); break; // Shift operations. case OperatorType.LeftShift: generator.ShiftLeft(); break; case OperatorType.SignedRightShift: generator.ShiftRight(); break; case OperatorType.UnsignedRightShift: generator.ShiftRightUnsigned(); EmitConversion.ToNumber(generator, PrimitiveType.UInt32); break; // Equality operations. case OperatorType.Equal: generator.Call(ReflectionHelpers.TypeComparer_Equals); break; case OperatorType.StrictlyEqual: generator.Call(ReflectionHelpers.TypeComparer_StrictEquals); break; case OperatorType.NotEqual: generator.Call(ReflectionHelpers.TypeComparer_Equals); generator.LoadBoolean(false); generator.CompareEqual(); break; case OperatorType.StrictlyNotEqual: generator.Call(ReflectionHelpers.TypeComparer_StrictEquals); generator.LoadBoolean(false); generator.CompareEqual(); break; default: throw new NotImplementedException(string.Format("Unsupported operator {0}", this.OperatorType)); } }
/// <summary> /// Pops the value on the stack, converts it from one type to another, then pushes the /// result onto the stack. Undefined is converted to the given default value. /// </summary> /// <param name="generator"> The IL generator. </param> /// <param name="fromType"> The type to convert from. </param> /// <param name="targetParameter"> The type to convert to and the default value, if there is one. </param> private static void EmitTypeConversion(ILGenerator generator, Type fromType, BinderArgument argument) { // Emit either the default value if there is one, otherwise emit "undefined". if (argument.HasDefaultValue) { // Check if the input value is undefined. var elseClause = generator.CreateLabel(); generator.Duplicate(); generator.BranchIfNull(elseClause); generator.Duplicate(); generator.LoadField(ReflectionHelpers.Undefined_Value); generator.CompareEqual(); generator.BranchIfTrue(elseClause); // Convert as per normal. EmitTypeConversion(generator, fromType, argument.Type); // Jump to the end. var endOfIf = generator.CreateLabel(); generator.Branch(endOfIf); generator.DefineLabelPosition(elseClause); // Pop the existing value and emit the default value. generator.Pop(); EmitUndefined(generator, argument); // Define the end of the block. generator.DefineLabelPosition(endOfIf); } else { // Convert as per normal. EmitTypeConversion(generator, fromType, argument.Type); } }
/// <summary> /// Pops the value on the stack, converts it to an integer, then pushes the integer result /// onto the stack. /// </summary> /// <param name="generator"> The IL generator. </param> /// <param name="fromType"> The type to convert from. </param> public static void ToInteger(ILGenerator generator, PrimitiveType fromType) { // Check that a conversion is actually necessary. if (fromType == PrimitiveType.Int32 || fromType == PrimitiveType.UInt32 || fromType == PrimitiveType.Bool) return; switch (fromType) { case PrimitiveType.Undefined: case PrimitiveType.Null: // Converting from undefined or null produces 0. generator.Pop(); generator.LoadInt32(0); break; case PrimitiveType.Number: // Converting from a number produces the following: // Any number between -2147483648 and +2147483647 -> itself // Any number smaller than -2147483648 -> -2147483648 // Any number larger than +2147483647 -> +2147483647 // NaN -> 0 // bool isPositiveInfinity = input > 2147483647.0 var isPositiveInfinity = generator.CreateTemporaryVariable(typeof(bool)); generator.Duplicate(); generator.LoadDouble(2147483647.0); generator.CompareGreaterThan(); generator.StoreVariable(isPositiveInfinity); // bool notNaN = input == input var notNaN = generator.CreateTemporaryVariable(typeof(bool)); generator.Duplicate(); generator.Duplicate(); generator.CompareEqual(); generator.StoreVariable(notNaN); // input = (int)input // Infinity -> -2147483648 // -Infinity -> -2147483648 // NaN -> -2147483648 generator.ConvertToInteger(); // input = input & -((int)notNaN) generator.LoadVariable(notNaN); generator.Negate(); generator.BitwiseAnd(); // input = input - (int)isPositiveInfinity generator.LoadVariable(isPositiveInfinity); generator.Subtract(); // The temporary variables are no longer needed. generator.ReleaseTemporaryVariable(notNaN); generator.ReleaseTemporaryVariable(isPositiveInfinity); break; case PrimitiveType.String: case PrimitiveType.ConcatenatedString: case PrimitiveType.Any: case PrimitiveType.Object: // Otherwise, fall back to calling TypeConverter.ToInteger() generator.Call(ReflectionHelpers.TypeConverter_ToInteger); break; default: throw new NotImplementedException(string.Format("Unsupported primitive type: {0}", fromType)); } }
/// <summary> /// Pops the value on the stack, converts it to a boolean, then pushes the boolean result /// onto the stack. /// </summary> /// <param name="generator"> The IL generator. </param> /// <param name="fromType"> The type to convert from. </param> public static void ToBool(ILGenerator generator, PrimitiveType fromType) { // Check that a conversion is actually necessary. if (fromType == PrimitiveType.Bool) return; switch (fromType) { case PrimitiveType.Undefined: case PrimitiveType.Null: // Converting from undefined or null produces false. generator.Pop(); generator.LoadInt32(0); break; case PrimitiveType.Int32: case PrimitiveType.UInt32: // Converting from an integer produces true if the integer is non-zero. generator.LoadInt32(0); generator.CompareGreaterThanUnsigned(); break; case PrimitiveType.Number: // Converting from a number produces true if the number is non-zero and not NaN. var temp = generator.CreateTemporaryVariable(fromType); generator.StoreVariable(temp); // input != 0 generator.LoadVariable(temp); generator.LoadDouble(0.0); generator.CompareEqual(); generator.LoadInt32(0); generator.CompareEqual(); // input == input generator.LoadVariable(temp); generator.Duplicate(); generator.CompareEqual(); // && generator.CompareEqual(); // The temporary variable is no longer needed. generator.ReleaseTemporaryVariable(temp); break; case PrimitiveType.String: // Converting from a string produces true if the string is not empty. generator.Call(ReflectionHelpers.String_Length); generator.LoadInt32(0); generator.CompareGreaterThan(); break; case PrimitiveType.ConcatenatedString: // Converting from a string produces true if the string is not empty. generator.Call(ReflectionHelpers.ConcatenatedString_Length); generator.LoadInt32(0); generator.CompareGreaterThan(); break; case PrimitiveType.Any: case PrimitiveType.Object: // Otherwise, fall back to calling TypeConverter.ToBoolean() generator.Call(ReflectionHelpers.TypeConverter_ToBoolean); break; default: throw new NotImplementedException(string.Format("Unsupported primitive type: {0}", fromType)); } }
/// <summary> /// Generates CIL for the expression. /// </summary> /// <param name="generator"> The generator to output the CIL to. </param> /// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param> public override void GenerateCode(ILGenerator generator, OptimizationInfo optimizationInfo) { // If a return value is not expected, generate only the side-effects. /*if (optimizationInfo.SuppressReturnValue == true) * { * this.GenerateSideEffects(generator, optimizationInfo); * return; * }*/ // Special case the addition operator. if (this.OperatorType == OperatorType.Add) { GenerateAdd(generator, optimizationInfo); return; } // Special case the instanceof operator. if (this.OperatorType == OperatorType.InstanceOf) { GenerateInstanceOf(generator, optimizationInfo); return; } // Special case the in operator. if (this.OperatorType == OperatorType.In) { GenerateIn(generator, optimizationInfo); return; } // Special case the relational operators. if (this.OperatorType == OperatorType.LessThan || this.OperatorType == OperatorType.LessThanOrEqual || this.OperatorType == OperatorType.GreaterThan || this.OperatorType == OperatorType.GreaterThanOrEqual) { GenerateRelational(generator, optimizationInfo); return; } // Special case the logical operators. if (this.OperatorType == OperatorType.LogicalAnd || this.OperatorType == OperatorType.LogicalOr) { GenerateLogical(generator, optimizationInfo); return; } // Load the left hand side onto the stack. this.Left.GenerateCode(generator, optimizationInfo); // Convert the left argument. switch (this.OperatorType) { // Arithmetic operations. case OperatorType.Subtract: case OperatorType.Multiply: case OperatorType.Divide: case OperatorType.Modulo: EmitConversion.ToNumber(generator, this.Left.ResultType); break; // Bitwise operations. case OperatorType.BitwiseAnd: case OperatorType.BitwiseOr: case OperatorType.BitwiseXor: case OperatorType.LeftShift: case OperatorType.SignedRightShift: case OperatorType.UnsignedRightShift: EmitConversion.ToInt32(generator, this.Left.ResultType); break; // Equality operations. case OperatorType.Equal: case OperatorType.StrictlyEqual: case OperatorType.NotEqual: case OperatorType.StrictlyNotEqual: EmitConversion.ToAny(generator, this.Left.ResultType); break; } // Load the right hand side onto the stack. this.Right.GenerateCode(generator, optimizationInfo); // Convert the right argument. switch (this.OperatorType) { // Arithmetic operations. case OperatorType.Subtract: case OperatorType.Multiply: case OperatorType.Divide: case OperatorType.Modulo: EmitConversion.ToNumber(generator, this.Right.ResultType); break; // Bitwise operations. case OperatorType.BitwiseAnd: case OperatorType.BitwiseOr: case OperatorType.BitwiseXor: EmitConversion.ToInt32(generator, this.Right.ResultType); break; case OperatorType.LeftShift: case OperatorType.SignedRightShift: case OperatorType.UnsignedRightShift: EmitConversion.ToUInt32(generator, this.Right.ResultType); generator.LoadInt32(0x1F); generator.BitwiseAnd(); break; // Equality operations. case OperatorType.Equal: case OperatorType.StrictlyEqual: case OperatorType.NotEqual: case OperatorType.StrictlyNotEqual: EmitConversion.ToAny(generator, this.Right.ResultType); break; } // Apply the operator. switch (this.OperatorType) { // Arithmetic operations. case OperatorType.Subtract: generator.Subtract(); break; case OperatorType.Multiply: generator.Multiply(); break; case OperatorType.Divide: generator.Divide(); break; case OperatorType.Modulo: generator.Remainder(); break; // Bitwise operations. case OperatorType.BitwiseAnd: generator.BitwiseAnd(); break; case OperatorType.BitwiseOr: generator.BitwiseOr(); break; case OperatorType.BitwiseXor: generator.BitwiseXor(); break; // Shift operations. case OperatorType.LeftShift: generator.ShiftLeft(); break; case OperatorType.SignedRightShift: generator.ShiftRight(); break; case OperatorType.UnsignedRightShift: generator.ShiftRightUnsigned(); EmitConversion.ToNumber(generator, PrimitiveType.UInt32); break; // Equality operations. case OperatorType.Equal: generator.Call(ReflectionHelpers.TypeComparer_Equals); break; case OperatorType.StrictlyEqual: generator.Call(ReflectionHelpers.TypeComparer_StrictEquals); break; case OperatorType.NotEqual: generator.Call(ReflectionHelpers.TypeComparer_Equals); generator.LoadBoolean(false); generator.CompareEqual(); break; case OperatorType.StrictlyNotEqual: generator.Call(ReflectionHelpers.TypeComparer_StrictEquals); generator.LoadBoolean(false); generator.CompareEqual(); break; default: throw new NotImplementedException(string.Format("Unsupported operator {0}", this.OperatorType)); } }