1 files changed, 197 insertions, 0 deletions
diff --git a/mcs/class/Microsoft.Build/Microsoft.Build.Internal/ExpressionConstructs.cs b/mcs/class/Microsoft.Build/Microsoft.Build.Internal/ExpressionConstructs.cs
new file mode 100644
index 0000000000..358f58e925
--- /dev/null
+++ b/mcs/class/Microsoft.Build/Microsoft.Build.Internal/ExpressionConstructs.cs
@@ -0,0 +1,197 @@
+//
+// ExpressionConstructs.cs
+//
+// Author:
+//   Atsushi Enomoto (atsushi@xamarin.com)
+//
+// Copyright (C) 2013 Xamarin Inc. (http://www.xamarin.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace Microsoft.Build.Internal.Expressions
+{
+	
+	class Locatable
+	{
+		public ILocation Location { get; set; }		
+	}
+	
+	partial class ExpressionList : ILocation, IEnumerable<Expression>
+	{
+		public ExpressionList ()
+		{
+		}
+		
+		public ExpressionList (Expression entry)
+		{
+			Add (entry);
+		}
+		
+		public int Count {
+			get { return list.Count; }
+		}
+		
+		//public int Line {
+		//	get { return list.Count == 0 ? 0 : list [0].Line; }
+		//}
+		public int Column {
+			get { return list.Count == 0 ? 0 : list [0].Column; }
+		}
+		public string File {
+			get { return list.Count == 0 ? null : list [0].File; }
+		}
+		public string ToLocationString ()
+		{
+			return list.Count == 0 ? null : list [0].Location.ToLocationString ();
+		}
+			
+		public IEnumerator<Expression> GetEnumerator ()
+		{
+			return list.GetEnumerator ();
+		}
+		
+		IEnumerator IEnumerable.GetEnumerator ()
+		{
+			return list.GetEnumerator ();
+		}
+		
+		List<Expression> list = new List<Expression> ();
+		
+		public ExpressionList Add (Expression expr)
+		{
+			list.Add (expr);
+			return this;
+		}
+		
+		public ExpressionList Insert (int pos, Expression expr)
+		{
+			list.Insert (pos, expr);
+			return this;
+		}
+	}
+
+	abstract partial class Expression : Locatable, ILocation
+	{
+		//public int Line {
+		//	get { return Location.Line; }
+		//}
+		public int Column {
+			get { return Location.Column; }
+		}
+		public string File {
+			get { return Location.File; }
+		}
+		public string ToLocationString ()
+		{
+			return Location.ToLocationString ();
+		}
+	}
+	
+	enum Operator
+	{
+		EQ,
+		NE,
+		LT,
+		LE,
+		GT,
+		GE,
+		And,
+		Or
+	}
+	
+	partial class BinaryExpression : Expression
+	{
+		public Operator Operator { get; set; }
+		public Expression Left { get; set; }
+		public Expression Right { get; set; }
+	}
+	
+	partial class BooleanLiteral : Expression
+	{
+		public bool Value { get; set; }
+	}
+
+	partial class NotExpression : Expression
+	{
+		public Expression Negated { get; set; }
+	}
+
+	partial class PropertyAccessExpression : Expression
+	{
+		public PropertyAccess Access { get; set; }
+	}
+	
+	enum PropertyTargetType
+	{
+		Object,
+		Type,
+	}
+	
+	class PropertyAccess : Locatable
+	{
+		public NameToken Name { get; set; }
+		public Expression Target { get; set; }
+		public PropertyTargetType TargetType { get; set; }
+		public ExpressionList Arguments { get; set; }
+	}
+
+	partial class ItemAccessExpression : Expression
+	{
+		public ItemApplication Application { get; set; }
+	}
+	
+	class ItemApplication : Locatable
+	{
+		public NameToken Name { get; set; }
+		public ExpressionList Expressions { get; set; }
+	}
+
+	partial class MetadataAccessExpression : Expression
+	{
+		public MetadataAccess Access { get; set; }
+	}
+	
+	class MetadataAccess : Locatable
+	{
+		public NameToken Metadata { get; set; }
+		public NameToken ItemType { get; set; }
+	}
+	
+	partial class StringLiteral : Expression
+	{
+		public NameToken Value { get; set; }
+	}
+
+	partial class RawStringLiteral : Expression
+	{
+		public NameToken Value { get; set; }
+	}
+	
+	partial class FunctionCallExpression : Expression
+	{
+		public NameToken Name { get; set; }
+		public ExpressionList Arguments { get; set; }
+	}
+}
+