linq keyword expression

LINQ/LINQ/Interpreter/Expressions/Keywords/OutputProjection.vb

@@ -0,0 +1,22 @@
+Imports LINQ.Runtime
+Imports Microsoft.VisualBasic.ComponentModel.DataSourceModel
+
+Namespace Interpreter.Expressions
+
+    Public Class OutputProjection : Inherits Expression
+
+        Public Property fields As NamedValue(Of Expression)()
+
+        Sub New(fields As IEnumerable(Of NamedValue(Of Expression)))
+            Me.fields = fields.ToArray
+        End Sub
+
+        Public Overrides Function Exec(env As Environment) As Object
+            Throw New NotImplementedException()
+        End Function
+
+        Public Overrides Function ToString() As String
+            Return $"new {{{fields.Select(Function(a) $"{a.Name} = {a.Value}").JoinBy(", ")}}}"
+        End Function
+    End Class
+End Namespace

LINQ/LINQ/LINQ.vbproj

@@ -129,8 +129,9 @@
     <Compile Include="Interpreter\Executable.vb" />
     <Compile Include="Interpreter\Expressions\BinaryExpression.vb" />
     <Compile Include="Interpreter\Expressions\ArrayExpression.vb" />
-    <Compile Include="Interpreter\Expressions\WhereFilter.vb" />
-    <Compile Include="Interpreter\Expressions\SymbolDeclare.vb" />
+    <Compile Include="Interpreter\Expressions\Keywords\OutputProjection.vb" />
+    <Compile Include="Interpreter\Expressions\Keywords\WhereFilter.vb" />
+    <Compile Include="Interpreter\Expressions\Keywords\SymbolDeclare.vb" />
     <Compile Include="Interpreter\Query\AggregateExpression.vb" />
     <Compile Include="Interpreter\Query\Query.vb" />
     <Compile Include="Interpreter\Query\DataSoruce.vb" />