public static IEnumerable <Instruction> PushConvertedValue(this ValueNode node, ILContext context,
TypeReference targetTypeRef, TypeReference typeConverter, IEnumerable <Instruction> pushServiceProvider,
bool boxValueTypes, bool unboxValueTypes)
{
var module = context.Body.Method.Module;
var str = (string)node.Value;
//If the TypeConverter has a ProvideCompiledAttribute that can be resolved, shortcut this
Type compiledConverterType;
if (typeConverter?.GetCustomAttribute(module, ("Microsoft.Maui.Controls", "Microsoft.Maui.Controls.Xaml", "ProvideCompiledAttribute"))?.ConstructorArguments?.First().Value is string compiledConverterName && (compiledConverterType = Type.GetType(compiledConverterName)) != null)
{
var compiledConverter = Activator.CreateInstance(compiledConverterType);
var converter = typeof(ICompiledTypeConverter).GetMethods().FirstOrDefault(md => md.Name == "ConvertFromString");
IEnumerable <Instruction> instructions;
try
{
instructions = (IEnumerable <Instruction>)converter.Invoke(compiledConverter, new object[] {
node.Value as string, context, node as BaseNode
});
}
catch (System.Reflection.TargetInvocationException tie) when(tie.InnerException is XamlParseException)
{
throw tie.InnerException;
}
catch (System.Reflection.TargetInvocationException tie) when(tie.InnerException is BuildException)
{
throw tie.InnerException;
}
foreach (var i in instructions)
{
yield return(i);
}
if (targetTypeRef.IsValueType && boxValueTypes)
{
yield return(Instruction.Create(OpCodes.Box, module.ImportReference(targetTypeRef)));
}
yield break;
}
//If there's a [TypeConverter], use it
if (typeConverter != null)
{
var isExtendedConverter = typeConverter.ImplementsInterface(module.ImportReference(("Microsoft.Maui.Controls", "Microsoft.Maui.Controls", "IExtendedTypeConverter")));
var typeConverterCtorRef = module.ImportCtorReference(typeConverter, paramCount: 0);
var convertFromInvariantStringDefinition = isExtendedConverter
? module.ImportReference(("Microsoft.Maui.Controls", "Microsoft.Maui.Controls", "IExtendedTypeConverter"))
.ResolveCached()
.Methods.FirstOrDefault(md => md.Name == "ConvertFromInvariantString" && md.Parameters.Count == 2)
: typeConverter.ResolveCached()
.AllMethods()
.FirstOrDefault(md => md.methodDef.Name == "ConvertFromInvariantString" && md.methodDef.Parameters.Count == 1).methodDef;
var convertFromInvariantStringReference = module.ImportReference(convertFromInvariantStringDefinition);
yield return(Create(Newobj, typeConverterCtorRef));
yield return(Create(Ldstr, node.Value as string));
if (isExtendedConverter)
{
foreach (var instruction in pushServiceProvider)
{
yield return(instruction);
}
}
yield return(Instruction.Create(OpCodes.Callvirt, convertFromInvariantStringReference));
if (targetTypeRef.IsValueType && unboxValueTypes)
{
yield return(Instruction.Create(OpCodes.Unbox_Any, module.ImportReference(targetTypeRef)));
}
//ConvertFrom returns an object, no need to Box
yield break;
}
var originalTypeRef = targetTypeRef;
var isNullable = false;
MethodReference nullableCtor = null;
if (targetTypeRef.ResolveCached().FullName == "System.Nullable`1")
{
var nullableTypeRef = targetTypeRef;
targetTypeRef = ((GenericInstanceType)targetTypeRef).GenericArguments[0];
isNullable = true;
nullableCtor = originalTypeRef.GetMethods(md => md.IsConstructor && md.Parameters.Count == 1, module).Single().Item1;
nullableCtor = nullableCtor.ResolveGenericParameters(nullableTypeRef, module);
}
var implicitOperator = module.TypeSystem.String.GetImplicitOperatorTo(targetTypeRef, module);
//Obvious Built-in conversions
if (targetTypeRef.ResolveCached().BaseType != null && targetTypeRef.ResolveCached().BaseType.FullName == "System.Enum")
{
yield return(PushParsedEnum(targetTypeRef, str, node));
}
else if (targetTypeRef.FullName == "System.Char")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, unchecked ((int)TryFormat(Char.Parse, node, str))));
}
else if (targetTypeRef.FullName == "System.SByte")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, unchecked ((int)TryFormat(s => SByte.Parse(s, CultureInfo.InvariantCulture), node, str))));
}
else if (targetTypeRef.FullName == "System.Int16")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, unchecked ((int)TryFormat(s => Int16.Parse(s, CultureInfo.InvariantCulture), node, str))));
}
else if (targetTypeRef.FullName == "System.Int32")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, TryFormat(s => Int32.Parse(s, CultureInfo.InvariantCulture), node, str)));
}
else if (targetTypeRef.FullName == "System.Int64")
{
yield return(Instruction.Create(OpCodes.Ldc_I8, TryFormat(s => Int64.Parse(s, CultureInfo.InvariantCulture), node, str)));
}
else if (targetTypeRef.FullName == "System.Byte")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, unchecked ((int)TryFormat(s => Byte.Parse(s, CultureInfo.InvariantCulture), node, str))));
}
else if (targetTypeRef.FullName == "System.UInt16")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, unchecked ((int)TryFormat(s => UInt16.Parse(s, CultureInfo.InvariantCulture), node, str))));
}
else if (targetTypeRef.FullName == "System.UInt32")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, unchecked ((int)TryFormat(s => UInt32.Parse(s, CultureInfo.InvariantCulture), node, str))));
}
else if (targetTypeRef.FullName == "System.UInt64")
{
yield return(Instruction.Create(OpCodes.Ldc_I8, unchecked ((long)TryFormat(s => UInt64.Parse(s, CultureInfo.InvariantCulture), node, str))));
}
else if (targetTypeRef.FullName == "System.Single")
{
yield return(Instruction.Create(OpCodes.Ldc_R4, TryFormat(s => Single.Parse(str, CultureInfo.InvariantCulture), node, str)));
}
else if (targetTypeRef.FullName == "System.Double")
{
yield return(Instruction.Create(OpCodes.Ldc_R8, TryFormat(s => Double.Parse(str, CultureInfo.InvariantCulture), node, str)));
}
else if (targetTypeRef.FullName == "System.Boolean")
{
if (TryFormat(Boolean.Parse, node, str))
{
yield return(Instruction.Create(OpCodes.Ldc_I4_1));
}
else
{
yield return(Instruction.Create(OpCodes.Ldc_I4_0));
}
}
else if (targetTypeRef.FullName == "System.TimeSpan")
{
var ts = TryFormat(s => TimeSpan.Parse(s, CultureInfo.InvariantCulture), node, str);
var ticks = ts.Ticks;
yield return(Instruction.Create(OpCodes.Ldc_I8, ticks));
yield return(Instruction.Create(OpCodes.Newobj, module.ImportCtorReference(("mscorlib", "System", "TimeSpan"), parameterTypes: new[] { ("mscorlib", "System", "Int64") })));
public static IEnumerable <Instruction> PushConvertedValue(this ValueNode node, ILContext context,
TypeReference targetTypeRef, TypeReference typeConverter, IEnumerable <Instruction> pushServiceProvider,
bool boxValueTypes, bool unboxValueTypes)
{
var module = context.Body.Method.Module;
var str = (string)node.Value;
//If the TypeConverter has a ProvideCompiledAttribute that can be resolved, shortcut this
var compiledConverterName = typeConverter?.GetCustomAttribute(module, ("Xamarin.Forms.Core", "Xamarin.Forms.Xaml", "ProvideCompiledAttribute"))?.ConstructorArguments?.First().Value as string;
Type compiledConverterType;
if (compiledConverterName != null && (compiledConverterType = Type.GetType(compiledConverterName)) != null)
{
var compiledConverter = Activator.CreateInstance(compiledConverterType);
var converter = typeof(ICompiledTypeConverter).GetMethods().FirstOrDefault(md => md.Name == "ConvertFromString");
var instructions = (IEnumerable <Instruction>)converter.Invoke(compiledConverter, new object[] {
node.Value as string, context, node as BaseNode
});
foreach (var i in instructions)
{
yield return(i);
}
if (targetTypeRef.IsValueType && boxValueTypes)
{
yield return(Instruction.Create(OpCodes.Box, module.ImportReference(targetTypeRef)));
}
yield break;
}
//If there's a [TypeConverter], use it
if (typeConverter != null)
{
var isExtendedConverter = typeConverter.ImplementsInterface(module.ImportReference(("Xamarin.Forms.Core", "Xamarin.Forms", "IExtendedTypeConverter")));
var typeConverterCtorRef = module.ImportCtorReference(typeConverter, paramCount: 0, predicate: md => !md.IsStatic);
var convertFromInvariantStringDefinition = isExtendedConverter
? module.ImportReference(("Xamarin.Forms.Core", "Xamarin.Forms", "IExtendedTypeConverter"))
.ResolveCached()
.Methods.FirstOrDefault(md => md.Name == "ConvertFromInvariantString" && md.Parameters.Count == 2)
: typeConverter.ResolveCached()
.AllMethods()
.FirstOrDefault(md => md.Name == "ConvertFromInvariantString" && md.Parameters.Count == 1);
var convertFromInvariantStringReference = module.ImportReference(convertFromInvariantStringDefinition);
yield return(Instruction.Create(OpCodes.Newobj, typeConverterCtorRef));
yield return(Instruction.Create(OpCodes.Ldstr, node.Value as string));
if (isExtendedConverter)
{
foreach (var instruction in pushServiceProvider)
{
yield return(instruction);
}
}
yield return(Instruction.Create(OpCodes.Callvirt, convertFromInvariantStringReference));
if (targetTypeRef.IsValueType && unboxValueTypes)
{
yield return(Instruction.Create(OpCodes.Unbox_Any, module.ImportReference(targetTypeRef)));
}
//ConvertFrom returns an object, no need to Box
yield break;
}
var originalTypeRef = targetTypeRef;
var isNullable = false;
MethodReference nullableCtor = null;
if (targetTypeRef.ResolveCached().FullName == "System.Nullable`1")
{
var nullableTypeRef = targetTypeRef;
targetTypeRef = ((GenericInstanceType)targetTypeRef).GenericArguments[0];
isNullable = true;
nullableCtor = originalTypeRef.GetMethods(md => md.IsConstructor && md.Parameters.Count == 1, module).Single().Item1;
nullableCtor = nullableCtor.ResolveGenericParameters(nullableTypeRef, module);
}
var implicitOperator = module.TypeSystem.String.GetImplicitOperatorTo(targetTypeRef, module);
//Obvious Built-in conversions
if (targetTypeRef.ResolveCached().BaseType != null && targetTypeRef.ResolveCached().BaseType.FullName == "System.Enum")
{
yield return(PushParsedEnum(targetTypeRef, str, node));
}
else if (targetTypeRef.FullName == "System.Char")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, Char.Parse(str)));
}
else if (targetTypeRef.FullName == "System.SByte")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, SByte.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.Int16")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, Int16.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.Int32")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, Int32.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.Int64")
{
yield return(Instruction.Create(OpCodes.Ldc_I8, Int64.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.Byte")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, Byte.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.UInt16")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, unchecked ((int)UInt16.Parse(str, CultureInfo.InvariantCulture))));
}
else if (targetTypeRef.FullName == "System.UInt32")
{
yield return(Instruction.Create(OpCodes.Ldc_I4, UInt32.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.UInt64")
{
yield return(Instruction.Create(OpCodes.Ldc_I8, unchecked ((long)UInt64.Parse(str, CultureInfo.InvariantCulture))));
}
else if (targetTypeRef.FullName == "System.Single")
{
yield return(Instruction.Create(OpCodes.Ldc_R4, Single.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.Double")
{
yield return(Instruction.Create(OpCodes.Ldc_R8, Double.Parse(str, CultureInfo.InvariantCulture)));
}
else if (targetTypeRef.FullName == "System.Boolean")
{
if (Boolean.Parse(str))
{
yield return(Instruction.Create(OpCodes.Ldc_I4_1));
}
else
{
yield return(Instruction.Create(OpCodes.Ldc_I4_0));
}
}
else if (targetTypeRef.FullName == "System.TimeSpan")
{
var ts = TimeSpan.Parse(str, CultureInfo.InvariantCulture);
var ticks = ts.Ticks;
var timeSpanCtorRef = module.ImportCtorReference(("mscorlib", "System", "TimeSpan"), paramCount: 1);
yield return(Instruction.Create(OpCodes.Ldc_I8, ticks));
yield return(Instruction.Create(OpCodes.Newobj, timeSpanCtorRef));
}
else if (targetTypeRef.FullName == "System.DateTime")
{
var dt = DateTime.Parse(str, CultureInfo.InvariantCulture);
var ticks = dt.Ticks;
var dateTimeCtorRef = module.ImportCtorReference(("mscorlib", "System", "DateTime"), paramCount: 1);
yield return(Instruction.Create(OpCodes.Ldc_I8, ticks));
yield return(Instruction.Create(OpCodes.Newobj, dateTimeCtorRef));
}
else if (targetTypeRef.FullName == "System.String" && str.StartsWith("{}", StringComparison.Ordinal))
{
yield return(Instruction.Create(OpCodes.Ldstr, str.Substring(2)));
}
else if (targetTypeRef.FullName == "System.String")
{
yield return(Instruction.Create(OpCodes.Ldstr, str));
}
else if (targetTypeRef.FullName == "System.Object")
{
yield return(Instruction.Create(OpCodes.Ldstr, str));
}
else if (targetTypeRef.FullName == "System.Decimal")
{
decimal outdecimal;
if (decimal.TryParse(str, NumberStyles.Number, CultureInfo.InvariantCulture, out outdecimal))
{
var vardef = new VariableDefinition(module.ImportReference(("mscorlib", "System", "Decimal")));
context.Body.Variables.Add(vardef);
//Use an extra temp var so we can push the value to the stack, just like other cases
// IL_0003: ldstr "adecimal"
// IL_0008: ldc.i4.s 0x6f
// IL_000a: call class [mscorlib]System.Globalization.CultureInfo class [mscorlib]System.Globalization.CultureInfo::get_InvariantCulture()
// IL_000f: ldloca.s 0
// IL_0011: call bool valuetype [mscorlib]System.Decimal::TryParse(string, valuetype [mscorlib]System.Globalization.NumberStyles, class [mscorlib]System.IFormatProvider, [out] valuetype [mscorlib]System.Decimal&)
// IL_0016: pop
yield return(Instruction.Create(OpCodes.Ldstr, str));
yield return(Instruction.Create(OpCodes.Ldc_I4, 0x6f)); //NumberStyles.Number
var getInvariant = module.ImportPropertyGetterReference(("mscorlib", "System.Globalization", "CultureInfo"),
propertyName: "InvariantCulture");
yield return(Instruction.Create(OpCodes.Call, getInvariant));
yield return(Instruction.Create(OpCodes.Ldloca, vardef));
var tryParse = module.ImportMethodReference(("mscorlib", "System", "Decimal"),
methodName: "TryParse",
paramCount: 4);
yield return(Instruction.Create(OpCodes.Call, tryParse));
yield return(Instruction.Create(OpCodes.Pop));
yield return(Instruction.Create(OpCodes.Ldloc, vardef));
}
else
{
yield return(Instruction.Create(OpCodes.Ldc_I4_0));
var decimalctor = module.ImportCtorReference(("mscorlib", "System", "Decimal"),
paramCount: 1,
predicate: md => md.Parameters[0].ParameterType.FullName == "System.Int32");
yield return(Instruction.Create(OpCodes.Newobj, decimalctor));
}
}
else if (implicitOperator != null)
{
yield return(Instruction.Create(OpCodes.Ldstr, node.Value as string));
yield return(Instruction.Create(OpCodes.Call, module.ImportReference(implicitOperator)));
}
else
{
yield return(Instruction.Create(OpCodes.Ldnull));
}
if (isNullable)
{
yield return(Instruction.Create(OpCodes.Newobj, module.ImportReference(nullableCtor)));
}
if (originalTypeRef.IsValueType && boxValueTypes)
{
yield return(Instruction.Create(OpCodes.Box, module.ImportReference(originalTypeRef)));
}
}