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prim-types.fs
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prim-types.fs
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// Copyright (c) Microsoft Corporation. All Rights Reserved. See License.txt in the project root for license information.
#nowarn "25" // Incomplete match expressions
#nowarn "35" // This construct is deprecated: the treatment of this operator is now handled directly by the F# compiler and its meaning may not be redefined.
#nowarn "44" // This construct is deprecated. This function is for use by compiled F# code and should not be used directly
#nowarn "52" // The value has been copied to ensure the original is not mutated by this operation
#nowarn "60" // Override implementations in augmentations are now deprecated. Override implementations should be given as part of the initial declaration of a type.
#nowarn "61" // The containing type can use 'null' as a representation value for its nullary union case. This member will be compiled as a static member.
#nowarn "69" // Interface implementations in augmentations are now deprecated. Interface implementations should be given on the initial declaration of a type.
#nowarn "77" // Member constraints with the name 'Exp' are given special status by the F# compiler as certain .NET types are implicitly augmented with this member. This may result in compilation failures if you attempt to invoke the member constraint from your own code.
#nowarn "3218" // mismatch of parameter name for 'fst' and 'snd'
namespace Microsoft.FSharp.Core
open System
open System.Collections
open System.Collections.Generic
open System.Diagnostics
open System.Globalization
open System.Reflection
open System.Text
type Unit() =
override x.GetHashCode() = 0
override x.Equals(obj:obj) =
match obj with null -> true | :? Unit -> true | _ -> false
interface System.IComparable with
member x.CompareTo(_obj:obj) = 0
and unit = Unit
type SourceConstructFlags =
| None = 0
| SumType = 1
| RecordType = 2
| ObjectType = 3
| Field = 4
| Exception = 5
| Closure = 6
| Module = 7
| UnionCase = 8
| Value = 9
| KindMask = 31
| NonPublicRepresentation = 32
[<Flags>]
type CompilationRepresentationFlags =
| None = 0
| Static = 1
| Instance = 2
/// append 'Module' to the end of a non-unique module
| ModuleSuffix = 4
| UseNullAsTrueValue = 8
| Event = 16
[<AttributeUsage(AttributeTargets.Class,AllowMultiple=false)>]
type SealedAttribute(value:bool) =
inherit System.Attribute()
member x.Value = value
new() = new SealedAttribute(true)
[<AttributeUsage(AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type AbstractClassAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.GenericParameter,AllowMultiple=false)>]
[<Sealed>]
type EqualityConditionalOnAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.GenericParameter,AllowMultiple=false)>]
[<Sealed>]
type ComparisonConditionalOnAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type AllowNullLiteralAttribute(value: bool) =
inherit System.Attribute()
member x.Value = value
new () = new AllowNullLiteralAttribute(true)
[<AttributeUsage(AttributeTargets.Field,AllowMultiple=false)>]
[<Sealed>]
type VolatileFieldAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type DefaultAugmentationAttribute(value:bool) =
inherit System.Attribute()
member x.Value = value
[<AttributeUsage (AttributeTargets.Property,AllowMultiple=false)>]
[<Sealed>]
type CLIEventAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type CLIMutableAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type AutoSerializableAttribute(value:bool) =
inherit System.Attribute()
member x.Value = value
[<AttributeUsage (AttributeTargets.Field,AllowMultiple=false)>]
[<Sealed>]
type DefaultValueAttribute(check:bool) =
inherit System.Attribute()
member x.Check = check
new() = new DefaultValueAttribute(true)
[<AttributeUsage (AttributeTargets.Method,AllowMultiple=false)>]
[<Sealed>]
type EntryPointAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type ReferenceEqualityAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type StructuralComparisonAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type StructuralEqualityAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class ||| AttributeTargets.Interface ||| AttributeTargets.Delegate ||| AttributeTargets.Struct ||| AttributeTargets.Enum,AllowMultiple=false)>]
[<Sealed>]
type NoEqualityAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class ||| AttributeTargets.Struct,AllowMultiple=false)>]
[<Sealed>]
type CustomEqualityAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class ||| AttributeTargets.Struct,AllowMultiple=false)>]
[<Sealed>]
type CustomComparisonAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class ||| AttributeTargets.Interface ||| AttributeTargets.Delegate ||| AttributeTargets.Struct ||| AttributeTargets.Enum,AllowMultiple=false)>]
[<Sealed>]
type NoComparisonAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class ||| AttributeTargets.Parameter ||| AttributeTargets.Method ||| AttributeTargets.Property ||| AttributeTargets.Constructor,AllowMultiple=false)>]
[<Sealed>]
type ReflectedDefinitionAttribute(includeValue: bool) =
inherit System.Attribute()
new() = ReflectedDefinitionAttribute(false)
member x.IncludeValue = includeValue
[<AttributeUsage (AttributeTargets.Method ||| AttributeTargets.Class ||| AttributeTargets.Field ||| AttributeTargets.Interface ||| AttributeTargets.Struct ||| AttributeTargets.Delegate ||| AttributeTargets.Enum ||| AttributeTargets.Property,AllowMultiple=false)>]
[<Sealed>]
type CompiledNameAttribute(compiledName:string) =
inherit System.Attribute()
member x.CompiledName = compiledName
[<AttributeUsage (AttributeTargets.Struct,AllowMultiple=false)>]
[<Sealed>]
type StructAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.GenericParameter ||| AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type MeasureAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type MeasureAnnotatedAbbreviationAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Interface,AllowMultiple=false)>]
[<Sealed>]
type InterfaceAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type ClassAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Field,AllowMultiple=false)>]
[<Sealed>]
type LiteralAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Assembly,AllowMultiple=false)>]
[<Sealed>]
type FSharpInterfaceDataVersionAttribute(major:int,minor:int,release:int) =
inherit System.Attribute()
member x.Major = major
member x.Minor = minor
member x.Release = release
[<AttributeUsage(AttributeTargets.All,AllowMultiple=false)>]
[<Sealed>]
type CompilationMappingAttribute(sourceConstructFlags:SourceConstructFlags,
variantNumber:int,
sequenceNumber:int,
resourceName:string,
typeDefinitions:System.Type[]) =
inherit System.Attribute()
member x.SourceConstructFlags = sourceConstructFlags
member x.SequenceNumber = sequenceNumber
member x.VariantNumber = variantNumber
new(sourceConstructFlags) = CompilationMappingAttribute(sourceConstructFlags,0,0)
new(sourceConstructFlags,sequenceNumber) = CompilationMappingAttribute(sourceConstructFlags,0,sequenceNumber)
new(sourceConstructFlags,variantNumber,sequenceNumber) = CompilationMappingAttribute(sourceConstructFlags,variantNumber,sequenceNumber,null,null)
new(resourceName, typeDefinitions) = CompilationMappingAttribute(SourceConstructFlags.None,0,0,resourceName, typeDefinitions)
member x.TypeDefinitions = typeDefinitions
member x.ResourceName = resourceName
[<AttributeUsage(AttributeTargets.All,AllowMultiple=false)>]
[<Sealed>]
type CompilationSourceNameAttribute(sourceName:string) =
inherit System.Attribute()
member x.SourceName = sourceName
//-------------------------------------------------------------------------
[<AttributeUsage(AttributeTargets.All,AllowMultiple=false)>]
[<Sealed>]
type CompilationRepresentationAttribute (flags : CompilationRepresentationFlags) =
inherit System.Attribute()
member x.Flags = flags
[<AttributeUsage(AttributeTargets.All,AllowMultiple=false)>]
[<Sealed>]
type ExperimentalAttribute(message:string) =
inherit System.Attribute()
member x.Message = message
[<AttributeUsage(AttributeTargets.Method,AllowMultiple=false)>]
[<Sealed>]
type CompilationArgumentCountsAttribute(counts:int[]) =
inherit System.Attribute()
member x.Counts =
let unboxPrim(x:obj) = (# "unbox.any !0" type ('T) x : 'T #)
(unboxPrim(counts.Clone()) : System.Collections.Generic.IEnumerable<int>)
[<AttributeUsage(AttributeTargets.Method,AllowMultiple=false)>]
[<Sealed>]
type CustomOperationAttribute(name:string) =
inherit System.Attribute()
let mutable isBinary = false
let mutable allowInto = false
let mutable isJoin = false
let mutable isGroupJoin = false
let mutable maintainsVarSpace = false
let mutable maintainsVarSpaceWithBind = false
let mutable joinOnWord = ""
member x.Name = name
member x.AllowIntoPattern with get() = allowInto and set v = allowInto <- v
member x.IsLikeZip with get() = isBinary and set v = isBinary <- v
member x.IsLikeJoin with get() = isJoin and set v = isJoin <- v
member x.IsLikeGroupJoin with get() = isGroupJoin and set v = isGroupJoin <- v
member x.JoinConditionWord with get() = joinOnWord and set v = joinOnWord <- v
member x.MaintainsVariableSpace with get() = maintainsVarSpace and set v = maintainsVarSpace <- v
member x.MaintainsVariableSpaceUsingBind with get() = maintainsVarSpaceWithBind and set v = maintainsVarSpaceWithBind <- v
[<AttributeUsage(AttributeTargets.Parameter,AllowMultiple=false)>]
[<Sealed>]
type ProjectionParameterAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Class ||| AttributeTargets.Interface ||| AttributeTargets.Struct ||| AttributeTargets.Delegate ||| AttributeTargets.Enum,AllowMultiple=false)>]
[<Sealed>]
type StructuredFormatDisplayAttribute(value:string) =
inherit System.Attribute()
member x.Value = value
[<AttributeUsage(AttributeTargets.All,AllowMultiple=false)>]
[<Sealed>]
type CompilerMessageAttribute(message:string, messageNumber : int) =
inherit System.Attribute()
let mutable isError = false
let mutable isHidden = false
member x.Message = message
member x.MessageNumber = messageNumber
member x.IsError with get() = isError and set v = isError <- v
member x.IsHidden with get() = isHidden and set v = isHidden <- v
[<AttributeUsage(AttributeTargets.Method ||| AttributeTargets.Property,AllowMultiple=false)>]
[<Sealed>]
type UnverifiableAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Method ||| AttributeTargets.Property,AllowMultiple=false)>]
[<Sealed>]
type NoDynamicInvocationAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Parameter,AllowMultiple=false)>]
[<Sealed>]
type OptionalArgumentAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Method,AllowMultiple=false)>]
[<Sealed>]
type GeneralizableValueAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Method,AllowMultiple=false)>]
[<Sealed>]
type RequiresExplicitTypeArgumentsAttribute() =
inherit System.Attribute()
[<AttributeUsage(AttributeTargets.Class,AllowMultiple=false)>]
[<Sealed>]
type RequireQualifiedAccessAttribute() =
inherit System.Attribute()
[<AttributeUsage (AttributeTargets.Class ||| AttributeTargets.Assembly,AllowMultiple=true)>]
[<Sealed>]
type AutoOpenAttribute(path:string) =
inherit System.Attribute()
member x.Path = path
new() = AutoOpenAttribute("")
/// This Attribute is used to make Value bindings like
/// let x = some code
/// operate like static properties.
[<AttributeUsage(AttributeTargets.Property,AllowMultiple=false)>]
[<Sealed>]
type ValueAsStaticPropertyAttribute() =
inherit System.Attribute()
[<MeasureAnnotatedAbbreviation>] type float<[<Measure>] 'Measure> = float
[<MeasureAnnotatedAbbreviation>] type float32<[<Measure>] 'Measure> = float32
[<MeasureAnnotatedAbbreviation>] type decimal<[<Measure>] 'Measure> = decimal
[<MeasureAnnotatedAbbreviation>] type int<[<Measure>] 'Measure> = int
[<MeasureAnnotatedAbbreviation>] type sbyte<[<Measure>] 'Measure> = sbyte
[<MeasureAnnotatedAbbreviation>] type int16<[<Measure>] 'Measure> = int16
[<MeasureAnnotatedAbbreviation>] type int64<[<Measure>] 'Measure> = int64
/// <summary>Represents a managed pointer in F# code.</c></summary>
type byref<'T> = (# "!0&" #)
/// <summary>Represents a managed pointer in F# code.</summary>
type byref<'T, 'Kind> = (# "!0&" #)
/// Represents the types of byrefs in F# 4.5+
module ByRefKinds =
/// Represents a byref that can be written
[<Sealed>]
type Out() = class end
/// Represents a byref that can be read
[<Sealed>]
type In() = class end
/// Represents a byref that can be both read and written
[<Sealed>]
type InOut = class end
/// <summary>Represents a in-argument or readonly managed pointer in F# code. This type should only be used with F# 4.5+.</summary>
type inref<'T> = byref<'T, ByRefKinds.In>
/// <summary>Represents a out-argument managed pointer in F# code. This type should only be used with F# 4.5+.</summary>
type outref<'T> = byref<'T, ByRefKinds.Out>
#if FX_RESHAPED_REFLECTION
module PrimReflectionAdapters =
open System.Reflection
open System.Linq
// copied from BasicInlinedOperations
let inline box (x:'T) = (# "box !0" type ('T) x : obj #)
let inline unboxPrim<'T>(x:obj) = (# "unbox.any !0" type ('T) x : 'T #)
type System.Type with
member inline this.IsGenericType = this.GetTypeInfo().IsGenericType
member inline this.IsValueType = this.GetTypeInfo().IsValueType
member inline this.IsSealed = this.GetTypeInfo().IsSealed
member inline this.IsAssignableFrom(otherType: Type) = this.GetTypeInfo().IsAssignableFrom(otherType.GetTypeInfo())
member inline this.GetGenericArguments() = this.GetTypeInfo().GenericTypeArguments
member inline this.GetProperty(name) = this.GetRuntimeProperty(name)
member inline this.GetMethod(name, parameterTypes) = this.GetRuntimeMethod(name, parameterTypes)
member inline this.GetCustomAttributes(attributeType: Type, inherits: bool) : obj[] =
unboxPrim<_> (box (CustomAttributeExtensions.GetCustomAttributes(this.GetTypeInfo(), attributeType, inherits).ToArray()))
open PrimReflectionAdapters
#endif
module internal BasicInlinedOperations =
let inline unboxPrim<'T>(x:obj) = (# "unbox.any !0" type ('T) x : 'T #)
let inline box (x:'T) = (# "box !0" type ('T) x : obj #)
let inline not (b:bool) = (# "ceq" b false : bool #)
let inline (=) (x:int) (y:int) = (# "ceq" x y : bool #)
let inline (<>) (x:int) (y:int) = not(# "ceq" x y : bool #)
let inline (>=) (x:int) (y:int) = not(# "clt" x y : bool #)
let inline (>=.) (x:int64) (y:int64) = not(# "clt" x y : bool #)
let inline (>=...) (x:char) (y:char) = not(# "clt" x y : bool #)
let inline (<=...) (x:char) (y:char) = not(# "cgt" x y : bool #)
let inline (/) (x:int) (y:int) = (# "div" x y : int #)
let inline (+) (x:int) (y:int) = (# "add" x y : int #)
let inline (+.) (x:int64) (y:int64) = (# "add" x y : int64 #)
let inline (+..) (x:uint64) (y:uint64) = (# "add" x y : uint64 #)
let inline ( *. ) (x:int64) (y:int64) = (# "mul" x y : int64 #)
let inline ( *.. ) (x:uint64) (y:uint64) = (# "mul" x y : uint64 #)
let inline (^) (x:string) (y:string) = System.String.Concat(x,y)
let inline (<<<) (x:int) (y:int) = (# "shl" x y : int #)
let inline ( * ) (x:int) (y:int) = (# "mul" x y : int #)
let inline (-) (x:int) (y:int) = (# "sub" x y : int #)
let inline (-.) (x:int64) (y:int64) = (# "sub" x y : int64 #)
let inline (-..) (x:uint64) (y:uint64) = (# "sub" x y : uint64 #)
let inline (>) (x:int) (y:int) = (# "cgt" x y : bool #)
let inline (<) (x:int) (y:int) = (# "clt" x y : bool #)
let inline ignore _ = ()
let inline intOfByte (b:byte) = (# "" b : int #)
let inline raise (e: System.Exception) = (# "throw" e : 'U #)
let inline length (x: 'T[]) = (# "ldlen conv.i4" x : int #)
let inline zeroCreate (n:int) = (# "newarr !0" type ('T) n : 'T[] #)
let inline get (arr: 'T[]) (n:int) = (# "ldelem.any !0" type ('T) arr n : 'T #)
let set (arr: 'T[]) (n:int) (x:'T) = (# "stelem.any !0" type ('T) arr n x #)
let inline objEq (xobj:obj) (yobj:obj) = (# "ceq" xobj yobj : bool #)
let inline int64Eq (x:int64) (y:int64) = (# "ceq" x y : bool #)
let inline int32Eq (x:int32) (y:int32) = (# "ceq" x y : bool #)
let inline floatEq (x:float) (y:float) = (# "ceq" x y : bool #)
let inline float32Eq (x:float32) (y:float32) = (# "ceq" x y : bool #)
let inline charEq (x:char) (y:char) = (# "ceq" x y : bool #)
let inline intOrder (x:int) (y:int) = if (# "clt" x y : bool #) then (0-1) else (# "cgt" x y : int #)
let inline int64Order (x:int64) (y:int64) = if (# "clt" x y : bool #) then (0-1) else (# "cgt" x y : int #)
let inline byteOrder (x:byte) (y:byte) = if (# "clt" x y : bool #) then (0-1) else (# "cgt" x y : int #)
let inline byteEq (x:byte) (y:byte) = (# "ceq" x y : bool #)
let inline int64 (x:int) = (# "conv.i8" x : int64 #)
let inline int32 (x:int64) = (# "conv.i4" x : int32 #)
let inline typeof<'T> =
let tok = (# "ldtoken !0" type('T) : System.RuntimeTypeHandle #)
System.Type.GetTypeFromHandle(tok)
let inline typedefof<'T> =
let ty = typeof<'T>
if ty.IsGenericType then ty.GetGenericTypeDefinition() else ty
let inline sizeof<'T> =
(# "sizeof !0" type('T) : int #)
let inline unsafeDefault<'T> : 'T = (# "ilzero !0" type ('T) : 'T #)
let inline isinstPrim<'T>(x:obj) = (# "isinst !0" type ('T) x : obj #)
let inline castclassPrim<'T>(x:obj) = (# "castclass !0" type ('T) x : 'T #)
let inline notnullPrim<'T when 'T : not struct>(x:'T) = (# "ldnull cgt.un" x : bool #)
let inline iscastPrim<'T when 'T : not struct>(x:obj) = (# "isinst !0" type ('T) x : 'T #)
open BasicInlinedOperations
module TupleUtils =
// adapted from System.Tuple::CombineHashCodes
let inline mask (n:int) (m:int) = (# "and" n m : int #)
let inline opshl (x:int) (n:int) : int = (# "shl" x (mask n 31) : int #)
let inline opxor (x:int) (y:int) : int = (# "xor" x y : int32 #)
let inline combineTupleHashes (h1 : int) (h2 : int) = (opxor ((opshl h1 5) + h1) h2)
let combineTupleHashCodes (codes : int []) =
let mutable (num : int32) = codes.Length - 1
while (num > 1) do
let mutable i = 0
while ((i * 2) < (num+1)) do
let index = i * 2
let num' = index + 1
if index = num then
set codes i (get codes index)
num <- i
else
set codes i (combineTupleHashes (get codes index) (get codes num))
if num' = num then
num <- i
i <- i + 1
combineTupleHashes (get codes 0) (get codes 1)
//-------------------------------------------------------------------------
// The main aim here is to bootstrap the definition of structural hashing
// and comparison. Calls to these form part of the auto-generated
// code for each new datatype.
module LanguagePrimitives =
module (* internal *) ErrorStrings =
// inline functions cannot call GetString, so we must make these bits public
[<ValueAsStaticProperty>]
let AddressOpNotFirstClassString = SR.GetString(SR.addressOpNotFirstClass)
[<ValueAsStaticProperty>]
let NoNegateMinValueString = SR.GetString(SR.noNegateMinValue)
// needs to be public to be visible from inline function 'average' and others
[<ValueAsStaticProperty>]
let InputSequenceEmptyString = SR.GetString(SR.inputSequenceEmpty)
// needs to be public to be visible from inline function 'average' and others
[<ValueAsStaticProperty>]
let InputArrayEmptyString = SR.GetString(SR.arrayWasEmpty)
// needs to be public to be visible from inline function 'average' and others
[<ValueAsStaticProperty>]
let InputMustBeNonNegativeString = SR.GetString(SR.inputMustBeNonNegative)
[<CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1034:NestedTypesShouldNotBeVisible")>] // nested module OK
module IntrinsicOperators =
//-------------------------------------------------------------------------
// Lazy and/or. Laziness added by the F# compiler.
let (&) e1 e2 = if e1 then e2 else false
let (&&) e1 e2 = if e1 then e2 else false
[<CompiledName("Or")>]
let (or) e1 e2 = if e1 then true else e2
let (||) e1 e2 = if e1 then true else e2
//-------------------------------------------------------------------------
// Address-of
// Note, "raise<'T> : exn -> 'T" is manually inlined below.
// Byref usage checks prohibit type instantiations involving byrefs.
[<NoDynamicInvocation>]
let inline (~&) (obj : 'T) : byref<'T> =
ignore obj // pretend the variable is used
let e = new System.ArgumentException(ErrorStrings.AddressOpNotFirstClassString)
(# "throw" (e :> System.Exception) : byref<'T> #)
[<NoDynamicInvocation>]
let inline (~&&) (obj : 'T) : nativeptr<'T> =
ignore obj // pretend the variable is used
let e = new System.ArgumentException(ErrorStrings.AddressOpNotFirstClassString)
(# "throw" (e :> System.Exception) : nativeptr<'T> #)
open IntrinsicOperators
#if FX_RESHAPED_REFLECTION
open PrimReflectionAdapters
#endif
[<CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1034:NestedTypesShouldNotBeVisible")>] // nested module OK
module IntrinsicFunctions =
// Unboxing, type casts, type tests
type TypeNullnessSemantics = int
// CLI reference types
let TypeNullnessSemantics_NullIsExtraValue = 1
// F# types with [<UseNullAsTrueValue>]
let TypeNullnessSemantics_NullTrueValue = 2
// F# record, union, tuple, function types
let TypeNullnessSemantics_NullNotLiked = 3
// structs
let TypeNullnessSemantics_NullNever = 4
// duplicated from above since we're using integers in this section
let CompilationRepresentationFlags_PermitNull = 8
let getTypeInfo (ty:Type) =
if ty.IsValueType
then TypeNullnessSemantics_NullNever else
let mappingAttrs = ty.GetCustomAttributes(typeof<CompilationMappingAttribute>, false)
if mappingAttrs.Length = 0
then TypeNullnessSemantics_NullIsExtraValue
elif ty.Equals(typeof<unit>) then
TypeNullnessSemantics_NullTrueValue
elif typeof<Delegate>.IsAssignableFrom(ty) then
TypeNullnessSemantics_NullIsExtraValue
elif ty.GetCustomAttributes(typeof<AllowNullLiteralAttribute>, false).Length > 0 then
TypeNullnessSemantics_NullIsExtraValue
else
let reprAttrs = ty.GetCustomAttributes(typeof<CompilationRepresentationAttribute>, false)
if reprAttrs.Length = 0 then
TypeNullnessSemantics_NullNotLiked
else
let reprAttr = get reprAttrs 0
let reprAttr = (# "unbox.any !0" type (CompilationRepresentationAttribute) reprAttr : CompilationRepresentationAttribute #)
if (# "and" reprAttr.Flags CompilationRepresentationFlags_PermitNull : int #) = 0
then TypeNullnessSemantics_NullNotLiked
else TypeNullnessSemantics_NullTrueValue
[<CodeAnalysis.SuppressMessage("Microsoft.Performance","CA1812:AvoidUninstantiatedInternalClasses")>]
type TypeInfo<'T>() =
// Compute an on-demand per-instantiation static field
static let info = getTypeInfo typeof<'T>
// Publish the results of that computation
static member TypeInfo = info
// Note: cheap nullness test for generic value:
// IL_0000: ldarg.1
// IL_0001: box !TKey
// IL_0006: brtrue.s IL_000e
// worst case: nothing known about source or destination
let UnboxGeneric<'T>(source: obj) =
if notnullPrim(source) or TypeInfo<'T>.TypeInfo <> TypeNullnessSemantics_NullNotLiked then
unboxPrim<'T>(source)
else
//System.Console.WriteLine("UnboxGeneric, x = {0}, 'T = {1}", x, typeof<'T>)
raise (System.NullReferenceException())
// better: source is NOT TypeNullnessSemantics_NullNotLiked
let inline UnboxFast<'T>(source: obj) =
// assert not(TypeInfo<'T>.TypeInfo = TypeNullnessSemantics_NullNotLiked)
unboxPrim<'T>(source)
// worst case: nothing known about source or destination
let TypeTestGeneric<'T>(source: obj) =
if notnullPrim(isinstPrim<'T>(source)) then true
elif notnullPrim(source) then false
else (TypeInfo<'T>.TypeInfo = TypeNullnessSemantics_NullTrueValue)
// quick entry: source is NOT TypeNullnessSemantics_NullTrueValue
let inline TypeTestFast<'T>(source: obj) =
//assert not(TypeInfo<'T>.TypeInfo = TypeNullnessSemantics_NullTrueValue)
notnullPrim(isinstPrim<'T>(source))
let Dispose<'T when 'T :> IDisposable >(resource:'T) =
match box resource with
| null -> ()
| _ -> resource.Dispose()
let FailInit() : unit = raise (InvalidOperationException(SR.GetString(SR.checkInit)))
let FailStaticInit() : unit = raise (InvalidOperationException(SR.GetString(SR.checkStaticInit)))
let CheckThis (x : 'T when 'T : not struct) =
match box x with
| null -> raise (InvalidOperationException(SR.GetString(SR.checkInit)))
| _ -> x
let inline MakeDecimal low medium high isNegative scale = Decimal(low,medium,high,isNegative,scale)
let inline GetString (source: string) (index:int) = source.Chars(index)
let inline CreateInstance<'T when 'T : (new : unit -> 'T) >() =
(System.Activator.CreateInstance() : 'T)
let inline GetArray (source: 'T array) (index:int) = (# "ldelem.any !0" type ('T) source index : 'T #)
let inline SetArray (target: 'T array) (index:int) (value:'T) = (# "stelem.any !0" type ('T) target index value #)
let inline GetArraySub arr (start:int) (len:int) =
let len = if len < 0 then 0 else len
let dst = zeroCreate len
for i = 0 to len - 1 do
SetArray dst i (GetArray arr (start + i))
dst
let inline SetArraySub arr (start:int) (len:int) (src:_[]) =
for i = 0 to len - 1 do
SetArray arr (start+i) (GetArray src i)
let inline GetArray2D (source: 'T[,]) (index1: int) (index2: int) = (# "ldelem.multi 2 !0" type ('T) source index1 index2 : 'T #)
let inline SetArray2D (target: 'T[,]) (index1: int) (index2: int) (value: 'T) = (# "stelem.multi 2 !0" type ('T) target index1 index2 value #)
let inline GetArray2DLength1 (arr: 'T[,]) = (# "ldlen.multi 2 0" arr : int #)
let inline GetArray2DLength2 (arr: 'T[,]) = (# "ldlen.multi 2 1" arr : int #)
let inline Array2DZeroCreate (n:int) (m:int) = (# "newarr.multi 2 !0" type ('T) n m : 'T[,] #)
let GetArray2DSub (src: 'T[,]) src1 src2 len1 len2 =
let len1 = (if len1 < 0 then 0 else len1)
let len2 = (if len2 < 0 then 0 else len2)
let dst = Array2DZeroCreate len1 len2
for i = 0 to len1 - 1 do
for j = 0 to len2 - 1 do
SetArray2D dst i j (GetArray2D src (src1 + i) (src2 + j))
dst
let SetArray2DSub (dst: 'T[,]) src1 src2 len1 len2 src =
for i = 0 to len1 - 1 do
for j = 0 to len2 - 1 do
SetArray2D dst (src1+i) (src2+j) (GetArray2D src i j)
let inline GetArray3D (source: 'T[,,]) (index1: int) (index2: int) (index3: int) =
(# "ldelem.multi 3 !0" type ('T) source index1 index2 index3 : 'T #)
let inline SetArray3D (target: 'T[,,]) (index1: int) (index2: int) (index3: int) (value:'T) =
(# "stelem.multi 3 !0" type ('T) target index1 index2 index3 value #)
let inline GetArray3DLength1 (arr: 'T[,,]) = (# "ldlen.multi 3 0" arr : int #)
let inline GetArray3DLength2 (arr: 'T[,,]) = (# "ldlen.multi 3 1" arr : int #)
let inline GetArray3DLength3 (arr: 'T[,,]) = (# "ldlen.multi 3 2" arr : int #)
let inline Array3DZeroCreate (n1:int) (n2:int) (n3:int) = (# "newarr.multi 3 !0" type ('T) n1 n2 n3 : 'T[,,] #)
let GetArray3DSub (src: 'T[,,]) src1 src2 src3 len1 len2 len3 =
let len1 = (if len1 < 0 then 0 else len1)
let len2 = (if len2 < 0 then 0 else len2)
let len3 = (if len3 < 0 then 0 else len3)
let dst = Array3DZeroCreate len1 len2 len3
for i = 0 to len1 - 1 do
for j = 0 to len2 - 1 do
for k = 0 to len3 - 1 do
SetArray3D dst i j k (GetArray3D src (src1+i) (src2+j) (src3+k))
dst
let SetArray3DSub (dst: 'T[,,]) src1 src2 src3 len1 len2 len3 src =
for i = 0 to len1 - 1 do
for j = 0 to len2 - 1 do
for k = 0 to len3 - 1 do
SetArray3D dst (src1+i) (src2+j) (src3+k) (GetArray3D src i j k)
let inline GetArray4D (source: 'T[,,,]) (index1: int) (index2: int) (index3: int) (index4: int) =
(# "ldelem.multi 4 !0" type ('T) source index1 index2 index3 index4 : 'T #)
let inline SetArray4D (target: 'T[,,,]) (index1: int) (index2: int) (index3: int) (index4: int) (value:'T) =
(# "stelem.multi 4 !0" type ('T) target index1 index2 index3 index4 value #)
let inline Array4DLength1 (arr: 'T[,,,]) = (# "ldlen.multi 4 0" arr : int #)
let inline Array4DLength2 (arr: 'T[,,,]) = (# "ldlen.multi 4 1" arr : int #)
let inline Array4DLength3 (arr: 'T[,,,]) = (# "ldlen.multi 4 2" arr : int #)
let inline Array4DLength4 (arr: 'T[,,,]) = (# "ldlen.multi 4 3" arr : int #)
let inline Array4DZeroCreate (n1:int) (n2:int) (n3:int) (n4:int) = (# "newarr.multi 4 !0" type ('T) n1 n2 n3 n4 : 'T[,,,] #)
let GetArray4DSub (src: 'T[,,,]) src1 src2 src3 src4 len1 len2 len3 len4 =
let len1 = (if len1 < 0 then 0 else len1)
let len2 = (if len2 < 0 then 0 else len2)
let len3 = (if len3 < 0 then 0 else len3)
let len4 = (if len4 < 0 then 0 else len4)
let dst = Array4DZeroCreate len1 len2 len3 len4
for i = 0 to len1 - 1 do
for j = 0 to len2 - 1 do
for k = 0 to len3 - 1 do
for m = 0 to len4 - 1 do
SetArray4D dst i j k m (GetArray4D src (src1+i) (src2+j) (src3+k) (src4+m))
dst
let SetArray4DSub (dst: 'T[,,,]) src1 src2 src3 src4 len1 len2 len3 len4 src =
for i = 0 to len1 - 1 do
for j = 0 to len2 - 1 do
for k = 0 to len3 - 1 do
for m = 0 to len4 - 1 do
SetArray4D dst (src1+i) (src2+j) (src3+k) (src4+m) (GetArray4D src i j k m)
let inline anyToString nullStr x =
match box x with
| null -> nullStr
| :? System.IFormattable as f -> f.ToString(null,System.Globalization.CultureInfo.InvariantCulture)
| obj -> obj.ToString()
let anyToStringShowingNull x = anyToString "null" x
module HashCompare =
//-------------------------------------------------------------------------
// LanguagePrimitives.HashCompare: Physical Equality
//-------------------------------------------------------------------------
// NOTE: compiler/optimizer is aware of this function and optimizes calls to it in many situations
// where it is known that PhysicalEqualityObj is identical to reference comparison
let PhysicalEqualityIntrinsic (x:'T) (y:'T) : bool when 'T : not struct =
objEq (box x) (box y)
let inline PhysicalEqualityFast (x:'T) (y:'T) : bool when 'T : not struct =
PhysicalEqualityIntrinsic x y
let PhysicalHashIntrinsic (input: 'T) : int when 'T : not struct =
System.Runtime.CompilerServices.RuntimeHelpers.GetHashCode(box input)
let inline PhysicalHashFast (input: 'T) =
PhysicalHashIntrinsic input
//-------------------------------------------------------------------------
// LanguagePrimitives.HashCompare: Comparison
//
// Bi-modal generic comparison helper implementation.
//
// The comparison implementation is run in either Equivalence Relation or Partial
// Equivalence Relation (PER) mode which governs what happens when NaNs are compared.
//
// Some representations chosen by F# are legitimately allowed to be null, e.g. the None value.
// However, null values don't support the polymorphic virtual comparison operation CompareTo
// so the test for nullness must be made on the caller side.
//-------------------------------------------------------------------------
let FailGenericComparison (obj: obj) =
raise (new System.ArgumentException(String.Format(SR.GetString(SR.genericCompareFail1), obj.GetType().ToString())))
/// This type has two instances - fsComparerER and fsComparerThrow.
/// - fsComparerER = ER semantics = no throw on NaN comparison = new GenericComparer(false) = GenericComparer = GenericComparison
/// - fsComparerPER = PER semantics = local throw on NaN comparison = new GenericComparer(true) = LessThan/GreaterThan etc.
type GenericComparer(throwsOnPER:bool) =
interface System.Collections.IComparer
member c.ThrowsOnPER = throwsOnPER
/// The unique exception object that is thrown locally when NaNs are compared in PER mode (by fsComparerPER)
/// This exception should never be observed by user code.
let NaNException = new System.Exception()
/// Implements generic comparison between two objects. This corresponds to the pseudo-code in the F#
/// specification. The treatment of NaNs is governed by "comp".
let rec GenericCompare (comp:GenericComparer) (xobj:obj,yobj:obj) =
(*if objEq xobj yobj then 0 else *)
match xobj,yobj with
| null,null -> 0
| null,_ -> -1
| _,null -> 1
// Use Ordinal comparison for strings
| (:? string as x),(:? string as y) -> System.String.CompareOrdinal(x, y)
// Permit structural comparison on arrays
| (:? System.Array as arr1),_ ->
match arr1,yobj with
// Fast path
| (:? (obj[]) as arr1), (:? (obj[]) as arr2) -> GenericComparisonObjArrayWithComparer comp arr1 arr2
// Fast path
| (:? (byte[]) as arr1), (:? (byte[]) as arr2) -> GenericComparisonByteArray arr1 arr2
| _ , (:? System.Array as arr2) -> GenericComparisonArbArrayWithComparer comp arr1 arr2
| _ -> FailGenericComparison xobj
// Check for IStructuralComparable
| (:? IStructuralComparable as x),_ ->
x.CompareTo(yobj,comp)
// Check for IComparable
| (:? System.IComparable as x),_ ->
if comp.ThrowsOnPER then
match xobj,yobj with
| (:? float as x),(:? float as y) ->
if (System.Double.IsNaN x || System.Double.IsNaN y) then
raise NaNException
| (:? float32 as x),(:? float32 as y) ->
if (System.Single.IsNaN x || System.Single.IsNaN y) then
raise NaNException
| _ -> ()
x.CompareTo(yobj)
| (:? nativeint as x),(:? nativeint as y) -> if (# "clt" x y : bool #) then (-1) else (# "cgt" x y : int #)
| (:? unativeint as x),(:? unativeint as y) -> if (# "clt.un" x y : bool #) then (-1) else (# "cgt.un" x y : int #)
| _,(:? IStructuralComparable as yc) ->
let res = yc.CompareTo(xobj,comp)
if res < 0 then 1 elif res > 0 then -1 else 0
| _,(:? System.IComparable as yc) ->
// Note -c doesn't work here: be careful of comparison function returning minint
let c = yc.CompareTo(xobj) in
if c < 0 then 1 elif c > 0 then -1 else 0
| _ -> FailGenericComparison xobj
/// specialcase: Core implementation of structural comparison on arbitrary arrays.
and GenericComparisonArbArrayWithComparer (comp:GenericComparer) (x:System.Array) (y:System.Array) : int =
#if FX_NO_ARRAY_LONG_LENGTH
if x.Rank = 1 && y.Rank = 1 then
let lenx = x.Length
let leny = y.Length
let c = intOrder lenx leny
if c <> 0 then c else
let basex = (x.GetLowerBound(0))
let basey = (y.GetLowerBound(0))
let c = intOrder basex basey
if c <> 0 then c else
let rec check i =
if i >= lenx then 0 else
let c = GenericCompare comp ((x.GetValue(i + basex)),(y.GetValue(i + basey)))
if c <> 0 then c else check (i + 1)
check 0
elif x.Rank = 2 && y.Rank = 2 then
let lenx0 = x.GetLength(0)
let leny0 = y.GetLength(0)
let c = intOrder lenx0 leny0
if c <> 0 then c else
let lenx1 = x.GetLength(1)
let leny1 = y.GetLength(1)
let c = intOrder lenx1 leny1
if c <> 0 then c else
let basex0 = (x.GetLowerBound(0))
let basex1 = (x.GetLowerBound(1))
let basey0 = (y.GetLowerBound(0))
let basey1 = (y.GetLowerBound(1))
let c = intOrder basex0 basey0
if c <> 0 then c else
let c = intOrder basex1 basey1
if c <> 0 then c else
let rec check0 i =
let rec check1 j =
if j >= lenx1 then 0 else
let c = GenericCompare comp ((x.GetValue(i + basex0,j + basex1)), (y.GetValue(i + basey0,j + basey1)))
if c <> 0 then c else check1 (j + 1)
if i >= lenx0 then 0 else
let c = check1 0
if c <> 0 then c else
check0 (i + 1)
check0 0
else
let c = intOrder x.Rank y.Rank
if c <> 0 then c else
let ndims = x.Rank
// check lengths
let rec precheck k =
if k >= ndims then 0 else
let c = intOrder (x.GetLength(k)) (y.GetLength(k))
if c <> 0 then c else
let c = intOrder (x.GetLowerBound(k)) (y.GetLowerBound(k))
if c <> 0 then c else
precheck (k+1)
let c = precheck 0
if c <> 0 then c else
let idxs : int[] = zeroCreate ndims
let rec checkN k baseIdx i lim =
if i >= lim then 0 else
set idxs k (baseIdx + i)
let c =
if k = ndims - 1
then GenericCompare comp ((x.GetValue(idxs)), (y.GetValue(idxs)))
else check (k+1)
if c <> 0 then c else
checkN k baseIdx (i + 1) lim
and check k =
if k >= ndims then 0 else
let baseIdx = x.GetLowerBound(k)
checkN k baseIdx 0 (x.GetLength(k))
check 0
#else
if x.Rank = 1 && y.Rank = 1 then
let lenx = x.LongLength
let leny = y.LongLength
let c = int64Order lenx leny
if c <> 0 then c else
let basex = int64 (x.GetLowerBound(0))
let basey = int64 (y.GetLowerBound(0))
let c = int64Order basex basey
if c <> 0 then c else
let rec check i =
if i >=. lenx then 0 else
let c = GenericCompare comp ((x.GetValue(i +. basex)), (y.GetValue(i +. basey)))
if c <> 0 then c else check (i +. 1L)
check 0L
elif x.Rank = 2 && y.Rank = 2 then
let lenx0 = x.GetLongLength(0)
let leny0 = y.GetLongLength(0)
let c = int64Order lenx0 leny0
if c <> 0 then c else
let lenx1 = x.GetLongLength(1)
let leny1 = y.GetLongLength(1)
let c = int64Order lenx1 leny1
if c <> 0 then c else
let basex0 = int64 (x.GetLowerBound(0))
let basey0 = int64 (y.GetLowerBound(0))
let c = int64Order basex0 basey0
if c <> 0 then c else
let basex1 = int64 (x.GetLowerBound(1))
let basey1 = int64 (y.GetLowerBound(1))
let c = int64Order basex1 basey1
if c <> 0 then c else
let rec check0 i =
let rec check1 j =
if j >=. lenx1 then 0 else
let c = GenericCompare comp ((x.GetValue(i +. basex0,j +. basex1)), (y.GetValue(i +. basey0,j +. basey1)))
if c <> 0 then c else check1 (j +. 1L)
if i >=. lenx0 then 0 else
let c = check1 0L
if c <> 0 then c else
check0 (i +. 1L)
check0 0L
else
let c = intOrder x.Rank y.Rank
if c <> 0 then c else
let ndims = x.Rank
// check lengths
let rec precheck k =
if k >= ndims then 0 else
let c = int64Order (x.GetLongLength(k)) (y.GetLongLength(k))
if c <> 0 then c else
let c = intOrder (x.GetLowerBound(k)) (y.GetLowerBound(k))
if c <> 0 then c else
precheck (k+1)
let c = precheck 0
if c <> 0 then c else
let idxs : int64[] = zeroCreate ndims
let rec checkN k baseIdx i lim =
if i >=. lim then 0 else
set idxs k (baseIdx +. i)
let c =