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using System.Collections.Generic;
using Mono.Cecil;
using Mono.Cecil.Cil;
using Xamarin.Forms.Xaml;
using Xamarin.Forms.Build.Tasks;
namespace Xamarin.Forms.Core.XamlC
{
class TriggerValueProvider : ICompiledValueProvider
{
public IEnumerable<Instruction> ProvideValue(VariableDefinitionReference vardefref, ModuleDefinition module, BaseNode node, ILContext context)
{
var valueNode = ((IElementNode)node).Properties[new XmlName("", "Value")];
//if it's an elementNode, there's probably no need to convert it
if (valueNode is IElementNode)
yield break;
var value = ((string)((ValueNode)valueNode).Value);
var bpNode = ((ValueNode)((IElementNode)node).Properties[new XmlName("", "Property")]);
var bpRef = (new BindablePropertyConverter()).GetBindablePropertyFieldReference((string)bpNode.Value, module, bpNode);
TypeReference _;
var setValueRef = module.Import(module.Import(typeof(Trigger)).GetProperty(p => p.Name == "Value", out _).SetMethod);
//push the setter
yield return Instruction.Create(OpCodes.Ldloc, vardefref.VariableDefinition);
//push the value
foreach (var instruction in ((ValueNode)valueNode).PushConvertedValue(context, bpRef, valueNode.PushServiceProvider(context, bpRef: bpRef), boxValueTypes: true, unboxValueTypes: false))
yield return instruction;
//set the value
yield return Instruction.Create(OpCodes.Callvirt, setValueRef);
}
}
}
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