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C# ILGenerator.ConvertUnsignedToDouble方法代码示例

本文整理汇总了C#中Jurassic.Compiler.ILGenerator.ConvertUnsignedToDouble方法的典型用法代码示例。如果您正苦于以下问题:C# ILGenerator.ConvertUnsignedToDouble方法的具体用法?C# ILGenerator.ConvertUnsignedToDouble怎么用?C# ILGenerator.ConvertUnsignedToDouble使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Jurassic.Compiler.ILGenerator的用法示例。


在下文中一共展示了ILGenerator.ConvertUnsignedToDouble方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: ToNumber

        /// <summary>
        /// Pops the value on the stack, converts it to a double, then pushes the double result
        /// onto the stack.
        /// </summary>
        /// <param name="generator"> The IL generator. </param>
        /// <param name="fromType"> The type to convert from. </param>
        public static void ToNumber(ILGenerator generator, PrimitiveType fromType)
        {
            // Check that a conversion is actually necessary.
            if (fromType == PrimitiveType.Number)
                return;

            switch (fromType)
            {
                case PrimitiveType.Undefined:
                    // Converting from undefined produces NaN.
                    generator.Pop();
                    generator.LoadDouble(double.NaN);
                    break;

                case PrimitiveType.Null:
                    // Converting from null produces 0.
                    generator.Pop();
                    generator.LoadDouble(0.0);
                    break;

                case PrimitiveType.Bool:
                    // Converting from a boolean produces 0 if the boolean is false, or 1 if the boolean is true.
                    generator.ConvertToDouble();
                    break;

                case PrimitiveType.Int32:
                    // Converting from int32 produces the same number.
                    generator.ConvertToDouble();
                    break;

                case PrimitiveType.UInt32:
                    // Converting from a number produces the following:
                    generator.ConvertUnsignedToDouble();
                    break;

                case PrimitiveType.String:
                case PrimitiveType.ConcatenatedString:
                case PrimitiveType.Any:
                case PrimitiveType.Object:
                    // Otherwise, fall back to calling TypeConverter.ToNumber()
                    generator.Call(ReflectionHelpers.TypeConverter_ToNumber);
                    break;

                default:
                    throw new NotImplementedException(string.Format("Unsupported primitive type: {0}", fromType));
            }
        }
开发者ID:paulbartrum,项目名称:jurassic,代码行数:53,代码来源:EmitConversion.cs

示例2: EmitConversionToObject


//.........这里部分代码省略.........
            if (fromType.IsValueType == false)
            {
                var startOfElse = generator.CreateLabel();
                endOfNullCheck = generator.CreateLabel();
                generator.Duplicate();
                generator.BranchIfNotNull(startOfElse);
                generator.Pop();
                EmitHelpers.EmitNull(generator);
                generator.Branch(endOfNullCheck);
                generator.DefineLabelPosition(startOfElse);
            }

            switch (Type.GetTypeCode(fromType))
            {
                case TypeCode.Boolean:
                    generator.Box(typeof(bool));
                    break;
                case TypeCode.Byte:
                    generator.Box(typeof(int));
                    break;
                case TypeCode.Char:
                    generator.LoadInt32(1);
                    generator.NewObject(ReflectionHelpers.String_Constructor_Char_Int);
                    break;
                
                case TypeCode.DBNull:
                    throw new NotSupportedException("DBNull is not a supported return type.");
                case TypeCode.Decimal:
                    generator.Call(ReflectionHelpers.Decimal_ToDouble);
                    generator.Box(typeof(double));
                    break;
                case TypeCode.Double:
                    generator.Box(typeof(double));
                    break;
                case TypeCode.Empty:
                    throw new NotSupportedException("Empty is not a supported return type.");
                case TypeCode.Int16:
                    generator.Box(typeof(int));
                    break;
                case TypeCode.Int32:
                    generator.Box(typeof(int));
                    break;
                case TypeCode.Int64:
                    generator.ConvertToDouble();
                    generator.Box(typeof(double));
                    break;

                case TypeCode.DateTime:
                case TypeCode.Object:
                    // Check if the type must be wrapped with a ClrInstanceWrapper.
                    // Note: if the type is a value type it cannot be a primitive or it would
                    // have been handled elsewhere in the switch.
                    ILLabel endOfWrapCheck = null;
                    if (fromType.IsValueType == false)
                    {
                        generator.Duplicate();
                        generator.Call(ReflectionHelpers.TypeUtilities_IsPrimitiveOrObject);
                        endOfWrapCheck = generator.CreateLabel();
                        generator.BranchIfTrue(endOfWrapCheck);
                    }

                    // The type must be wrapped.
                    var temp = generator.CreateTemporaryVariable(fromType);
                    generator.StoreVariable(temp);
                    generator.LoadArgument(0);
                    generator.LoadVariable(temp);
                    if (fromType.IsValueType == true)
                        generator.Box(fromType);
                    generator.ReleaseTemporaryVariable(temp);
                    generator.NewObject(ReflectionHelpers.ClrInstanceWrapper_Constructor);
                    
                    // End of wrap check.
                    if (fromType.IsValueType == false)
                        generator.DefineLabelPosition(endOfWrapCheck);
                    break;

                case TypeCode.SByte:
                    generator.Box(typeof(int));
                    break;
                case TypeCode.Single:
                    generator.Box(typeof(double));
                    break;
                case TypeCode.String:
                    break;
                case TypeCode.UInt16:
                    generator.Box(typeof(int));
                    break;
                case TypeCode.UInt32:
                    generator.Box(typeof(uint));
                    break;
                case TypeCode.UInt64:
                    generator.ConvertUnsignedToDouble();
                    generator.Box(typeof(double));
                    break;
            }

            // Label the end of the null check.
            if (fromType.IsValueType == false)
                generator.DefineLabelPosition(endOfNullCheck);
        }
开发者ID:leesanghyun2,项目名称:mp-onlinevideos2,代码行数:101,代码来源:ClrBinder.cs


注:本文中的Jurassic.Compiler.ILGenerator.ConvertUnsignedToDouble方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。