diff options
Diffstat (limited to 'Xamarin.Forms.Build.Tasks')
-rw-r--r-- | Xamarin.Forms.Build.Tasks/CompiledConverters/ListStringTypeConverter.cs | 41 | ||||
-rw-r--r-- | Xamarin.Forms.Build.Tasks/Xamarin.Forms.Build.Tasks.csproj | 1 |
2 files changed, 42 insertions, 0 deletions
diff --git a/Xamarin.Forms.Build.Tasks/CompiledConverters/ListStringTypeConverter.cs b/Xamarin.Forms.Build.Tasks/CompiledConverters/ListStringTypeConverter.cs new file mode 100644 index 00000000..62d7d69d --- /dev/null +++ b/Xamarin.Forms.Build.Tasks/CompiledConverters/ListStringTypeConverter.cs @@ -0,0 +1,41 @@ +using System; +using System.Collections.Generic; +using System.Linq; + +using Mono.Cecil; +using Mono.Cecil.Cil; + +using Xamarin.Forms.Xaml; +using Xamarin.Forms.Build.Tasks; + +namespace Xamarin.Forms.Core.XamlC +{ + class ListStringTypeConverter : ICompiledTypeConverter + { + public IEnumerable<Instruction> ConvertFromString(string value, ModuleDefinition module, BaseNode node) + { + if (value == null) { + yield return Instruction.Create(OpCodes.Ldnull); + yield break; + } + var parts = value.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(s => s.Trim()).ToList(); + + var listCtor = module.Import(typeof(List<>)).Resolve().Methods.FirstOrDefault(md => md.IsConstructor && md.Parameters.Count == 1 && md.Parameters[0].ParameterType.FullName == "System.Int32"); + var listCtorRef = module.Import(listCtor); + listCtorRef = module.Import(listCtorRef.ResolveGenericParameters(module.Import(typeof(List<string>)), module)); + + var adder = module.Import(typeof(ICollection<>)).Resolve().Methods.FirstOrDefault(md => md.Name == "Add" && md.Parameters.Count == 1); + var adderRef = module.Import(adder); + adderRef = module.Import(adderRef.ResolveGenericParameters(module.Import(typeof(ICollection<string>)), module)); + + yield return Instruction.Create(OpCodes.Ldc_I4, parts.Count); + yield return Instruction.Create(OpCodes.Newobj, listCtorRef); + + foreach (var part in parts) { + yield return Instruction.Create(OpCodes.Dup); + yield return Instruction.Create(OpCodes.Ldstr, part); + yield return Instruction.Create(OpCodes.Callvirt, adderRef); + } + } + } +}
\ No newline at end of file diff --git a/Xamarin.Forms.Build.Tasks/Xamarin.Forms.Build.Tasks.csproj b/Xamarin.Forms.Build.Tasks/Xamarin.Forms.Build.Tasks.csproj index 21c51688..173473d0 100644 --- a/Xamarin.Forms.Build.Tasks/Xamarin.Forms.Build.Tasks.csproj +++ b/Xamarin.Forms.Build.Tasks/Xamarin.Forms.Build.Tasks.csproj @@ -109,6 +109,7 @@ <Compile Include="CompiledValueProviders\ICompiledValueProvider.cs" /> <Compile Include="CompiledValueProviders\TriggerValueProvider.cs" /> <Compile Include="CompiledValueProviders\PassthroughValueProvider.cs" /> + <Compile Include="CompiledConverters\ListStringTypeConverter.cs" /> </ItemGroup> <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" /> <Target Name="AfterBuild"> |