diff options
Diffstat (limited to 'Xamarin.Forms.Build.Tasks/CompiledConverters/BindingTypeConverter.cs')
-rw-r--r-- | Xamarin.Forms.Build.Tasks/CompiledConverters/BindingTypeConverter.cs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Xamarin.Forms.Build.Tasks/CompiledConverters/BindingTypeConverter.cs b/Xamarin.Forms.Build.Tasks/CompiledConverters/BindingTypeConverter.cs new file mode 100644 index 00000000..74990a86 --- /dev/null +++ b/Xamarin.Forms.Build.Tasks/CompiledConverters/BindingTypeConverter.cs @@ -0,0 +1,32 @@ +using System.Collections.Generic; +using System.Linq; + +using Mono.Cecil; +using Mono.Cecil.Cil; + +using Xamarin.Forms.Xaml; + +using static System.String; + +namespace Xamarin.Forms.Core.XamlC +{ + class BindingTypeConverter : ICompiledTypeConverter + { + public IEnumerable<Instruction> ConvertFromString(string value, ModuleDefinition module, BaseNode node) + { + if (IsNullOrEmpty(value)) + throw new XamlParseException($"Cannot convert \"{value}\" into {typeof(Binding)}", node); + + var bindingCtor = module.Import(typeof(Binding)).Resolve().Methods.FirstOrDefault(md => md.IsConstructor && md.Parameters.Count == 6); + var bindingCtorRef = module.Import(bindingCtor); + + yield return Instruction.Create(OpCodes.Ldstr, value); + yield return Instruction.Create(OpCodes.Ldc_I4, (int)BindingMode.Default); + yield return Instruction.Create(OpCodes.Ldnull); + yield return Instruction.Create(OpCodes.Ldnull); + yield return Instruction.Create(OpCodes.Ldnull); + yield return Instruction.Create(OpCodes.Ldnull); + yield return Instruction.Create(OpCodes.Newobj, bindingCtorRef); + } + } +}
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