using System;
using System.Collections.ObjectModel;
using System.Reflection;
using System.Reflection.Emit;

namespace System.Linq.Expressions
{
	/// <summary>Represents a constructor call.</summary>
	// Token: 0x0200002D RID: 45
	public sealed class NewExpression : Expression
	{
		// Token: 0x06000241 RID: 577 RVA: 0x0000BEE8 File Offset: 0x0000A0E8
		internal NewExpression(Type type, ReadOnlyCollection<Expression> arguments)
			: base(ExpressionType.New, type)
		{
			this.arguments = arguments;
		}

		// Token: 0x06000242 RID: 578 RVA: 0x0000BEFC File Offset: 0x0000A0FC
		internal NewExpression(ConstructorInfo constructor, ReadOnlyCollection<Expression> arguments, ReadOnlyCollection<MemberInfo> members)
			: base(ExpressionType.New, constructor.DeclaringType)
		{
			this.constructor = constructor;
			this.arguments = arguments;
			this.members = members;
		}

		/// <summary>Gets the called constructor.</summary>
		/// <returns>The <see cref="T:System.Reflection.ConstructorInfo" /> that represents the called constructor.</returns>
		// Token: 0x17000030 RID: 48
		// (get) Token: 0x06000243 RID: 579 RVA: 0x0000BF24 File Offset: 0x0000A124
		public ConstructorInfo Constructor
		{
			get
			{
				return this.constructor;
			}
		}

		/// <summary>Gets the arguments to the constructor.</summary>
		/// <returns>A collection of <see cref="T:System.Linq.Expressions.Expression" /> objects that represent the arguments to the constructor.</returns>
		// Token: 0x17000031 RID: 49
		// (get) Token: 0x06000244 RID: 580 RVA: 0x0000BF2C File Offset: 0x0000A12C
		public ReadOnlyCollection<Expression> Arguments
		{
			get
			{
				return this.arguments;
			}
		}

		/// <summary>Gets the members that can retrieve the values of the fields that were initialized with constructor arguments.</summary>
		/// <returns>A collection of <see cref="T:System.Reflection.MemberInfo" /> objects that represent the members that can retrieve the values of the fields that were initialized with constructor arguments.</returns>
		// Token: 0x17000032 RID: 50
		// (get) Token: 0x06000245 RID: 581 RVA: 0x0000BF34 File Offset: 0x0000A134
		public ReadOnlyCollection<MemberInfo> Members
		{
			get
			{
				return this.members;
			}
		}

		// Token: 0x06000246 RID: 582 RVA: 0x0000BF3C File Offset: 0x0000A13C
		internal override void Emit(EmitContext ec)
		{
			ILGenerator ig = ec.ig;
			Type type = base.Type;
			LocalBuilder localBuilder = null;
			if (type.IsValueType)
			{
				localBuilder = ig.DeclareLocal(type);
				ig.Emit(OpCodes.Ldloca, localBuilder);
				if (this.constructor == null)
				{
					ig.Emit(OpCodes.Initobj, type);
					ig.Emit(OpCodes.Ldloc, localBuilder);
					return;
				}
			}
			ec.EmitCollection<Expression>(this.arguments);
			if (type.IsValueType)
			{
				ig.Emit(OpCodes.Call, this.constructor);
				ig.Emit(OpCodes.Ldloc, localBuilder);
			}
			else
			{
				ig.Emit(OpCodes.Newobj, this.constructor ?? NewExpression.GetDefaultConstructor(type));
			}
		}

		// Token: 0x06000247 RID: 583 RVA: 0x0000BFF4 File Offset: 0x0000A1F4
		private static ConstructorInfo GetDefaultConstructor(Type type)
		{
			return type.GetConstructor(Type.EmptyTypes);
		}

		// Token: 0x040000BA RID: 186
		private ConstructorInfo constructor;

		// Token: 0x040000BB RID: 187
		private ReadOnlyCollection<Expression> arguments;

		// Token: 0x040000BC RID: 188
		private ReadOnlyCollection<MemberInfo> members;
	}
}