using System.Collections.Generic;
using Mono.Cecil;
using Mono.Cecil.Cil;
 
namespace Microsoft.Maui.Controls.Build.Tasks
{
	static class VariableDefinitionExtensions
	{
		public static IEnumerable<Instruction> LoadAs(this VariableDefinition self, XamlCache cache, TypeReference type, ModuleDefinition module, bool box = true, bool unbox = true)
		{
			var implicitOperator = self.VariableType.GetImplicitOperatorTo(cache, type, module);
 
			yield return Instruction.Create(OpCodes.Ldloc, self);
 
			if (!self.VariableType.InheritsFromOrImplements(cache, type) && implicitOperator != null)
				yield return Instruction.Create(OpCodes.Call, module.ImportReference(implicitOperator));
			else if (box && self.VariableType.IsValueType && !type.IsValueType)
				yield return Instruction.Create(OpCodes.Box, module.ImportReference(self.VariableType));
			else if (unbox && !self.VariableType.IsValueType && type.IsValueType)
				yield return Instruction.Create(OpCodes.Unbox_Any, module.ImportReference(type));
		}
	}
}