Fix #89 - nested quotation literals

closes #142

src/fsharp/FSharp.Core.Unittests/SurfaceArea.4.0.fs

@@ -2795,14 +2795,17 @@ Microsoft.FSharp.Core.ReferenceEqualityAttribute: System.String ToString()
 Microsoft.FSharp.Core.ReferenceEqualityAttribute: System.Type GetType()
 Microsoft.FSharp.Core.ReferenceEqualityAttribute: Void .ctor()
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Boolean Equals(System.Object)
+Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Boolean IncludeValue
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Boolean IsDefaultAttribute()
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Boolean Match(System.Object)
+Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Boolean get_IncludeValue()
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Int32 GetHashCode()
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: System.Object TypeId
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: System.Object get_TypeId()
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: System.String ToString()
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: System.Type GetType()
 Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Void .ctor()
+Microsoft.FSharp.Core.ReflectedDefinitionAttribute: Void .ctor(Boolean)
 Microsoft.FSharp.Core.RequireQualifiedAccessAttribute: Boolean Equals(System.Object)
 Microsoft.FSharp.Core.RequireQualifiedAccessAttribute: Boolean IsDefaultAttribute()
 Microsoft.FSharp.Core.RequireQualifiedAccessAttribute: Boolean Match(System.Object)
@@ -3210,6 +3213,7 @@ Microsoft.FSharp.Linq.RuntimeHelpers.Grouping`2[K,T]: System.Type GetType()
 Microsoft.FSharp.Linq.RuntimeHelpers.Grouping`2[K,T]: Void .ctor(K, System.Collections.Generic.IEnumerable`1[T])
 Microsoft.FSharp.Linq.RuntimeHelpers.LeafExpressionConverter: Boolean Equals(System.Object)
 Microsoft.FSharp.Linq.RuntimeHelpers.LeafExpressionConverter: Int32 GetHashCode()
+Microsoft.FSharp.Linq.RuntimeHelpers.LeafExpressionConverter: Microsoft.FSharp.Quotations.FSharpExpr SubstHelperRaw(Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Quotations.FSharpVar[], System.Object[])
 Microsoft.FSharp.Linq.RuntimeHelpers.LeafExpressionConverter: Microsoft.FSharp.Quotations.FSharpExpr`1[T] SubstHelper[T](Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Quotations.FSharpVar[], System.Object[])
 Microsoft.FSharp.Linq.RuntimeHelpers.LeafExpressionConverter: System.Linq.Expressions.Expression QuotationToExpression(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Linq.RuntimeHelpers.LeafExpressionConverter: System.Linq.Expressions.Expression`1[T] ImplicitExpressionConversionHelper[T](T)
@@ -3299,6 +3303,8 @@ Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr P
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr PropertySet(Microsoft.FSharp.Quotations.FSharpExpr, System.Reflection.PropertyInfo, Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Collections.FSharpList`1[Microsoft.FSharp.Quotations.FSharpExpr]])
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr PropertySet(System.Reflection.PropertyInfo, Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Collections.FSharpList`1[Microsoft.FSharp.Quotations.FSharpExpr]])
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr Quote(Microsoft.FSharp.Quotations.FSharpExpr)
+Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr QuoteRaw(Microsoft.FSharp.Quotations.FSharpExpr)
+Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr QuoteTyped(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr Sequential(Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr Substitute(Microsoft.FSharp.Core.FSharpFunc`2[Microsoft.FSharp.Quotations.FSharpVar,Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr]])
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr TryFinally(Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Quotations.FSharpExpr)
@@ -3307,19 +3313,24 @@ Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr T
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr TypeTest(Microsoft.FSharp.Quotations.FSharpExpr, System.Type)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr UnionCaseTest(Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Reflection.UnionCaseInfo)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr Value(System.Object, System.Type)
+Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr ValueWithName(System.Object, System.Type, System.String)
+Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr ValueWithName[T](T, System.String)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr Value[T](T)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr Var(Microsoft.FSharp.Quotations.FSharpVar)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr VarSet(Microsoft.FSharp.Quotations.FSharpVar, Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr WhileLoop(Microsoft.FSharp.Quotations.FSharpExpr, Microsoft.FSharp.Quotations.FSharpExpr)
+Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr WithValue(System.Object, System.Type, Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr`1[T] Cast[T](Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr`1[T] GlobalVar[T](System.String)
+Microsoft.FSharp.Quotations.FSharpExpr: Microsoft.FSharp.Quotations.FSharpExpr`1[T] WithValue[T](T, Microsoft.FSharp.Quotations.FSharpExpr`1[T])
 Microsoft.FSharp.Quotations.FSharpExpr: System.Collections.Generic.IEnumerable`1[Microsoft.FSharp.Quotations.FSharpVar] GetFreeVars()
 Microsoft.FSharp.Quotations.FSharpExpr: System.String ToString()
 Microsoft.FSharp.Quotations.FSharpExpr: System.String ToString(Boolean)
 Microsoft.FSharp.Quotations.FSharpExpr: System.Type GetType()
 Microsoft.FSharp.Quotations.FSharpExpr: System.Type Type
 Microsoft.FSharp.Quotations.FSharpExpr: System.Type get_Type()
 Microsoft.FSharp.Quotations.FSharpExpr: Void RegisterReflectedDefinitions(System.Reflection.Assembly, System.String, Byte[])
+Microsoft.FSharp.Quotations.FSharpExpr: Void RegisterReflectedDefinitions(System.Reflection.Assembly, System.String, Byte[], System.Type[])
 Microsoft.FSharp.Quotations.FSharpExpr`1[T]: Boolean Equals(System.Object)
 Microsoft.FSharp.Quotations.FSharpExpr`1[T]: Int32 GetHashCode()
 Microsoft.FSharp.Quotations.FSharpExpr`1[T]: Microsoft.FSharp.Collections.FSharpList`1[Microsoft.FSharp.Quotations.FSharpExpr] CustomAttributes
@@ -3350,6 +3361,8 @@ Microsoft.FSharp.Quotations.PatternsModule: Int32 GetHashCode()
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Collections.FSharpList`1[Microsoft.FSharp.Quotations.FSharpExpr]] NewTuplePattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr] AddressOfPattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr] QuotePattern(Microsoft.FSharp.Quotations.FSharpExpr)
+Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr] QuoteRawPattern(Microsoft.FSharp.Quotations.FSharpExpr)
+Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr] QuoteTypedPattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpVar] VarPattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`2[Microsoft.FSharp.Collections.FSharpList`1[System.Tuple`2[Microsoft.FSharp.Quotations.FSharpVar,Microsoft.FSharp.Quotations.FSharpExpr]],Microsoft.FSharp.Quotations.FSharpExpr]] LetRecursivePattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`2[Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr],System.Reflection.FieldInfo]] FieldGetPattern(Microsoft.FSharp.Quotations.FSharpExpr)
@@ -3374,6 +3387,8 @@ Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`3[Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr],System.Reflection.PropertyInfo,Microsoft.FSharp.Collections.FSharpList`1[Microsoft.FSharp.Quotations.FSharpExpr]]] PropertyGetPattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`3[Microsoft.FSharp.Quotations.FSharpExpr,Microsoft.FSharp.Quotations.FSharpExpr,Microsoft.FSharp.Quotations.FSharpExpr]] IfThenElsePattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`3[Microsoft.FSharp.Quotations.FSharpVar,Microsoft.FSharp.Quotations.FSharpExpr,Microsoft.FSharp.Quotations.FSharpExpr]] LetPattern(Microsoft.FSharp.Quotations.FSharpExpr)
+Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`3[System.Object,System.Type,Microsoft.FSharp.Quotations.FSharpExpr]] WithValuePattern(Microsoft.FSharp.Quotations.FSharpExpr)
+Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`3[System.Object,System.Type,System.String]] ValueWithNamePattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`3[System.Type,Microsoft.FSharp.Collections.FSharpList`1[Microsoft.FSharp.Quotations.FSharpVar],Microsoft.FSharp.Quotations.FSharpExpr]] NewDelegatePattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`4[Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Quotations.FSharpExpr],System.Reflection.PropertyInfo,Microsoft.FSharp.Collections.FSharpList`1[Microsoft.FSharp.Quotations.FSharpExpr],Microsoft.FSharp.Quotations.FSharpExpr]] PropertySetPattern(Microsoft.FSharp.Quotations.FSharpExpr)
 Microsoft.FSharp.Quotations.PatternsModule: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`4[Microsoft.FSharp.Quotations.FSharpVar,Microsoft.FSharp.Quotations.FSharpExpr,Microsoft.FSharp.Quotations.FSharpExpr,Microsoft.FSharp.Quotations.FSharpExpr]] ForIntegerRangeLoopPattern(Microsoft.FSharp.Quotations.FSharpExpr)

src/fsharp/FSharp.Core/Linq.fs

@@ -207,9 +207,11 @@ module LeafExpressionConverter =
        |> System.Reflection.MethodInfo.GetMethodFromHandle
        :?> MethodInfo
 
-    let SubstHelper<'T> (q:Expr, x:Var[], y:obj[]) : Expr<'T> =  
+    let SubstHelperRaw (q:Expr, x:Var[], y:obj[]) : Expr =  
         let d = Map.ofArray (Array.zip x y) 
-        q.Substitute(fun v -> v |> d.TryFind |> Option.map (fun x -> Expr.Value(x, v.Type))) |> Expr.Cast
+        q.Substitute(fun v -> v |> d.TryFind |> Option.map (fun x -> Expr.Value(x, v.Type)))
+
+    let SubstHelper<'T> (q:Expr, x:Var[], y:obj[]) : Expr<'T> =  SubstHelperRaw(q,x,y) |> Expr.Cast
 
     let showAll = 
 #if FX_RESHAPED_REFLECTION
@@ -385,6 +387,12 @@ module LeafExpressionConverter =
         methodhandleof (fun (x:Expr,y:Var[],z:obj[]) -> SubstHelper<obj> (x,y,z)) 
         |> System.Reflection.MethodInfo.GetMethodFromHandle 
         :?> MethodInfo
+
+    let substHelperRawMeth = 
+        methodhandleof (fun (x:Expr,y:Var[],z:obj[]) -> SubstHelperRaw (x,y,z)) 
+        |> System.Reflection.MethodInfo.GetMethodFromHandle 
+        :?> MethodInfo
+
     let (-->) ty1 ty2 = Reflection.FSharpType.MakeFunctionType(ty1, ty2)
 
     /// Extract member initialization expression stored in 'MemberInitializationHelper' (by QueryExtensions.fs)
@@ -762,7 +770,7 @@ module LeafExpressionConverter =
         | Patterns.IfThenElse(g, t, e) -> 
             Expression.Condition(ConvExprToLinqInContext env g, ConvExprToLinqInContext env t, ConvExprToLinqInContext env e) |> asExpr
 
-        | Patterns.Quote x ->  
+        | Patterns.QuoteTyped x ->  
             let fvs = x.GetFreeVars()
 
             Expression.Call(substHelperMeth.MakeGenericMethod [| x.Type |], 
@@ -771,6 +779,15 @@ module LeafExpressionConverter =
                                (Expression.NewArrayInit(typeof<obj>, [| for fv in fvs -> Expression.Convert(env.varEnv.[fv], typeof<obj>) |> asExpr |]) |> asExpr) |]) 
                     |> asExpr
 
+        | Patterns.QuoteRaw x ->  
+            let fvs = x.GetFreeVars()
+
+            Expression.Call(substHelperRawMeth, 
+                            [| (Expression.Constant x) |> asExpr; 
+                               (Expression.NewArrayInit(typeof<Var>, [| for fv in fvs -> Expression.Constant fv |> asExpr |])  |> asExpr);  
+                               (Expression.NewArrayInit(typeof<obj>, [| for fv in fvs -> Expression.Convert(env.varEnv.[fv], typeof<obj>) |> asExpr |]) |> asExpr) |]) 
+                    |> asExpr
+
         | Patterns.Let (v, e, b) -> 
             let vP = ConvVarToLinq v
             let envinner = { env with varEnv = Map.add v (vP |> asExpr) env.varEnv } 

src/fsharp/FSharp.Core/Linq.fsi

@@ -303,5 +303,8 @@ namespace Microsoft.FSharp.Linq.RuntimeHelpers
         /// A runtime helper used to evaluate nested quotation literals.
         val SubstHelper : Expr * Var[] * obj[] -> Expr<'T>
 
+        /// A runtime helper used to evaluate nested quotation literals.
+        val SubstHelperRaw : Expr * Var[] * obj[] -> Expr
+
         val internal (|SpecificCallToMethod|_|) : System.RuntimeMethodHandle -> (Expr -> (Expr option * Type list * Expr list) option)
 #endif

src/fsharp/FSharp.Core/Query.fs

@@ -1128,15 +1128,15 @@ module Query =
 
     let (|AnyNestedQuery|_|) e = 
         match e with 
-        | CallQueryBuilderRunValue (None, _, [_; Quote e ]) 
-        | CallQueryBuilderRunEnumerable (None, _, [_; Quote e ]) 
-        | CallQueryBuilderRunQueryable (Some _, _, [ Quote e ]) -> Some e
+        | CallQueryBuilderRunValue (None, _, [_; QuoteTyped e ]) 
+        | CallQueryBuilderRunEnumerable (None, _, [_; QuoteTyped e ]) 
+        | CallQueryBuilderRunQueryable (Some _, _, [ QuoteTyped e ]) -> Some e
         | _ -> None
 
     let (|EnumerableNestedQuery|_|) e = 
         match e with 
-        | CallQueryBuilderRunEnumerable (None, _, [_; Quote e ]) 
-        | CallQueryBuilderRunQueryable (Some _, _, [ Quote e ]) -> Some e
+        | CallQueryBuilderRunEnumerable (None, _, [_; QuoteTyped e ]) 
+        | CallQueryBuilderRunQueryable (Some _, _, [ QuoteTyped e ]) -> Some e
         | _ -> None
 
     /// Represents the result of TransInner - either a normal expression, or something we're about to turn into 

src/fsharp/FSharp.Core/quotations.fs

@@ -179,7 +179,7 @@ and
     | CoerceOp     of Type
     | NewArrayOp    of Type
     | NewDelegateOp   of Type
-    | QuoteOp 
+    | QuoteOp of bool
     | SequentialOp 
     | AddressOfOp 
     | VarSetOp
@@ -293,7 +293,7 @@ and [<CompiledName("FSharpExpr")>]
         | VarTerm(v)   -> wordL v.Name
         | LambdaTerm(v,b)   -> combL "Lambda" [varL v; expr b]
         | HoleTerm _  -> wordL "_"
-        | CombTerm(QuoteOp,args) -> combL "Quote" (exprs args)
+        | CombTerm(QuoteOp _,args) -> combL "Quote" (exprs args)
         | _ -> failwithf "Unexpected term in layout %A" x.Tree
 
 
@@ -357,6 +357,7 @@ module Patterns =
 
     let mkArrayTy (t:Type) = t.MakeArrayType();
     let mkExprTy (t:Type) = exprTyC.MakeGenericType([| t |])
+    let rawExprTy = typeof<Expr>
 
 
     //--------------------------------------------------------------------------
@@ -381,7 +382,13 @@ module Patterns =
     let (|Lambda|_|)        (E x) = match x with LambdaTerm(a,b)  -> Some (a,b) | _ -> None 
 
     [<CompiledName("QuotePattern")>]
-    let (|Quote|_|)         (E x) = match x with CombTerm(QuoteOp,[a])     -> Some (a)   | _ -> None 
+    let (|Quote|_|)         (E x) = match x with CombTerm(QuoteOp _,[a])     -> Some (a)   | _ -> None 
+
+    [<CompiledName("QuoteRawPattern")>]
+    let (|QuoteRaw|_|)         (E x) = match x with CombTerm(QuoteOp false,[a])     -> Some (a)   | _ -> None 
+
+    [<CompiledName("QuoteTypedPattern")>]
+    let (|QuoteTyped|_|)         (E x) = match x with CombTerm(QuoteOp true,[a])     -> Some (a)   | _ -> None 
 
     [<CompiledName("IfThenElsePattern")>]
     let (|IfThenElse|_|)          = function Comb3(IfThenElseOp,e1,e2,e3) -> Some(e1,e2,e3) | _ -> None
@@ -577,14 +584,15 @@ module Patterns =
             | NewDelegateOp ty,_     -> ty
             | DefaultValueOp ty,_     -> ty
             | TypeTestOp _,_     -> typeof<bool>
-            | QuoteOp,[expr]        -> mkExprTy (typeOf expr)
+            | QuoteOp true,[expr]        -> mkExprTy (typeOf expr)
+            | QuoteOp false,[_]        -> rawExprTy
             | TryFinallyOp,[e1;_]        -> typeOf e1
             | TryWithOp,[e1;_;_]        -> typeOf e1
             | WhileLoopOp,_ 
             | VarSetOp,_
             | AddressSetOp,_ -> typeof<Unit> 
             | AddressOfOp,_ -> raise <| System.InvalidOperationException (SR.GetString(SR.QcannotTakeAddress))
-            | (QuoteOp | SequentialOp | TryWithOp | TryFinallyOp | IfThenElseOp | AppOp),_ -> failwith "unreachable"
+            | (QuoteOp _ | SequentialOp | TryWithOp | TryFinallyOp | IfThenElseOp | AppOp),_ -> failwith "unreachable"
 
 
     //--------------------------------------------------------------------------
@@ -656,7 +664,7 @@ module Patterns =
 
     // [Correct by definition]
     let mkVar v       = E(VarTerm v )
-    let mkQuote(a)    = E(CombTerm(QuoteOp,[(a:>Expr)] ))
+    let mkQuote(a,isTyped)    = E(CombTerm(QuoteOp isTyped,[(a:>Expr)] ))
 
     let mkValue (v,ty) = mkFE0 (ValueOp(v,ty,None))
     let mkValueWithName (v,ty,nm) = mkFE0 (ValueOp(v,ty,Some nm))
@@ -1363,12 +1371,14 @@ module Patterns =
                let idx = u_int st
                (fun env -> E(HoleTerm(a env.typeInst , idx)))
         | 4 -> let a = u_Expr st
-               (fun env -> mkQuote(a env))
+               (fun env -> mkQuote(a env, true))
         | 5 -> let a = u_Expr st
                let attrs = u_list u_Expr st
                (fun env -> let e = (a env) in EA(e.Tree,(e.CustomAttributes @ List.map (fun attrf -> attrf env) attrs)))
         | 6 -> let a = u_dtype st
                (fun env -> mkVar(Var.Global("this", a env.typeInst)))
+        | 7 -> let a = u_Expr st
+               (fun env -> mkQuote(a env, false))
         | _ -> failwith "u_Expr"
 
     and u_VarDecl st = 
@@ -1922,7 +1932,11 @@ type Expr with
     static member PropertySet (property:PropertyInfo, value:Expr, ?args) = 
         mkStaticPropSet(property, defaultArg args [], value)
 
-    static member Quote (expr:Expr) = mkQuote expr
+    static member Quote (expr:Expr) = mkQuote (expr, true)
+
+    static member QuoteRaw (expr:Expr) = mkQuote (expr, false)
+
+    static member QuoteTyped (expr:Expr) = mkQuote (expr, true)
 
     static member Sequential (e1:Expr, e2:Expr) = 
         mkSequential (e1, e2)
@@ -2178,7 +2192,7 @@ module ExprShape =
             | WhileLoopOp,[e1;e2]     -> mkWhileLoop(e1,e2)
             | TryFinallyOp,[e1;e2]     -> mkTryFinally(e1,e2)
             | TryWithOp,[e1;Lambda(v1,e2);Lambda(v2,e3)]     -> mkTryWith(e1,v1,e2,v2,e3)
-            | QuoteOp,[e1]     -> mkQuote(e1)
+            | QuoteOp flg,[e1]     -> mkQuote(e1,flg)
             | ValueOp(v,ty,None),[]  -> mkValue(v,ty)
             | ValueOp(v,ty,Some nm),[]  -> mkValueWithName(v,ty,nm)
             | WithValueOp(v,ty),[e]  -> mkValueWithDefn(v,ty,e)