src/Tizen.NUI.XamlBuild/src/public/XamlBuild/CompiledConverters/ExtentsTypeConverter.cs

   1 using Mono.Cecil;
   2 using Mono.Cecil.Cil;
   3 using System;
   4 using System.Collections.Generic;
   5 using System.ComponentModel;
   6 using System.Globalization;
   7 using System.Linq;
   8 using System.Reflection;
   9
  10 using Tizen.NUI;
  11 using Tizen.NUI.Xaml.Build.Tasks;
  12
  13 namespace Tizen.NUI.Xaml.Core.XamlC
  14 {
  15     internal class ExtentsTypeConverter : ICompiledTypeConverter
  16     {
  17         IEnumerable<Instruction> GenerateIL(ModuleDefinition module, params ushort[] args)
  18         {
  19             foreach (var d in args)
  20                 yield return Instruction.Create(OpCodes.Ldc_I4, d);
  21
  22             yield return Instruction.Create(OpCodes.Newobj, module.ImportCtorReference((XamlTask.nuiAssemblyName, XamlTask.nuiNameSpace, "Extents"),
  23                 parameterTypes: args.Select(a => ("mscorlib", "System", "UInt16")).ToArray()));
  24         }
  25
  26         public IEnumerable<Instruction> ConvertFromString(string value, ILContext context, BaseNode node)
  27         {
  28             var module = context.Body.Method.Module;
  29
  30             if (!string.IsNullOrEmpty(value))
  31             {
  32                 var thickness = value.Split(',');
  33
  34                 foreach (var thick in thickness)
  35                 {
  36                     if (thick.EndsWith("dp") || thick.EndsWith("px"))
  37                     {
  38                         return null;
  39                     }
  40                 }
  41
  42                 if (4 == thickness.Length)
  43                 {
  44                     ushort start, end, top, bottom;
  45
  46                     if (ushort.TryParse(thickness[0], NumberStyles.Number, CultureInfo.InvariantCulture, out start) &&
  47                         ushort.TryParse(thickness[1], NumberStyles.Number, CultureInfo.InvariantCulture, out end) &&
  48                         ushort.TryParse(thickness[2], NumberStyles.Number, CultureInfo.InvariantCulture, out top) &&
  49                         ushort.TryParse(thickness[2], NumberStyles.Number, CultureInfo.InvariantCulture, out bottom))
  50
  51                         return GenerateIL(module, start, end, top, bottom);
  52                 }
  53                 else if (1 == thickness.Length)
  54                 {
  55                     ushort v;
  56                     ushort.TryParse(thickness[0], NumberStyles.Number, CultureInfo.InvariantCulture, out v);
  57                     return GenerateIL(module, v, v, v, v);
  58                 }
  59             }
  60
  61             throw new XamlParseException($"Cannot convert \"{value}\" into Position", node);
  62         }
  63     }
  64 }