Xamarin Public Jenkins (auto-signing) 7d7f676260 Imported Upstream version 5.16.0.100
Former-commit-id: 38faa55fb9669e35e7d8448b15c25dc447f25767
2018-08-07 15:19:03 +00:00

797 lines
22 KiB
C#

//
// module.cs: keeps a tree representation of the generated code
//
// Authors: Miguel de Icaza (miguel@gnu.org)
// Marek Safar (marek.safar@gmail.com)
//
// Dual licensed under the terms of the MIT X11 or GNU GPL
//
// Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
// Copyright 2003-2008 Novell, Inc.
// Copyright 2011 Xamarin Inc
//
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using Mono.CompilerServices.SymbolWriter;
using System.Linq;
using System.IO;
using System.Security.Cryptography;
using Mono.Security.Cryptography;
#if STATIC
using IKVM.Reflection;
using IKVM.Reflection.Emit;
#else
using System.Reflection;
using System.Reflection.Emit;
#endif
namespace Mono.CSharp
{
//
// Module (top-level type) container
//
public sealed class ModuleContainer : TypeContainer
{
#if STATIC
//
// Compiler generated container for static data
//
sealed class StaticDataContainer : CompilerGeneratedContainer
{
readonly Dictionary<int, Struct> size_types;
readonly Dictionary<string, FieldSpec> data_hashes;
public StaticDataContainer (ModuleContainer module)
: base (module, new MemberName ("<PrivateImplementationDetails>", Location.Null),
Modifiers.STATIC | Modifiers.INTERNAL)
{
size_types = new Dictionary<int, Struct> ();
data_hashes = new Dictionary<string, FieldSpec> (StringComparer.Ordinal);
}
public override void CloseContainer ()
{
base.CloseContainer ();
foreach (var entry in size_types) {
entry.Value.CloseContainer ();
}
}
public FieldSpec DefineInitializedData (byte[] data, Location loc)
{
Struct size_type;
if (!size_types.TryGetValue (data.Length, out size_type)) {
//
// Build common type for this data length. We cannot use
// DefineInitializedData because it creates public type,
// and its name is not unique among modules
//
size_type = new Struct (this, new MemberName ("$ArrayType=" + data.Length, loc), Modifiers.PRIVATE | Modifiers.COMPILER_GENERATED, null);
size_type.CreateContainer ();
size_type.DefineContainer ();
size_types.Add (data.Length, size_type);
// It has to work even if StructLayoutAttribute does not exist
size_type.TypeBuilder.__SetLayout (1, data.Length);
}
FieldSpec fs;
var data_hash = GenerateDataFieldName (data);
if (!data_hashes.TryGetValue (data_hash, out fs)) {
var name = "$field-" + data_hash;
const Modifiers fmod = Modifiers.STATIC | Modifiers.INTERNAL | Modifiers.READONLY;
var fbuilder = TypeBuilder.DefineField (name, size_type.CurrentType.GetMetaInfo (), ModifiersExtensions.FieldAttr (fmod) | FieldAttributes.HasFieldRVA);
fbuilder.__SetDataAndRVA (data);
fs = new FieldSpec (CurrentType, null, size_type.CurrentType, fbuilder, fmod);
data_hashes.Add (data_hash, fs);
}
return fs;
}
static string GenerateDataFieldName (byte[] bytes)
{
using (var hashProvider = new SHA1CryptoServiceProvider ())
{
return CryptoConvert.ToHex (hashProvider.ComputeHash (bytes));
}
}
}
StaticDataContainer static_data;
//
// Makes const data field inside internal type container
//
public FieldSpec MakeStaticData (byte[] data, Location loc)
{
if (static_data == null) {
static_data = new StaticDataContainer (this);
static_data.CreateContainer ();
static_data.DefineContainer ();
AddCompilerGeneratedClass (static_data);
}
return static_data.DefineInitializedData (data, loc);
}
#endif
public sealed class PatternMatchingHelper : CompilerGeneratedContainer
{
public PatternMatchingHelper (ModuleContainer module)
: base (module, new MemberName ("<PatternMatchingHelper>", Location.Null),
Modifiers.STATIC | Modifiers.INTERNAL | Modifiers.DEBUGGER_HIDDEN)
{
}
public Method NumberMatcher { get; private set; }
protected override bool DoDefineMembers ()
{
if (!base.DoDefineMembers ())
return false;
NumberMatcher = GenerateNumberMatcher ();
return true;
}
Method GenerateNumberMatcher ()
{
var loc = Location;
var parameters = ParametersCompiled.CreateFullyResolved (
new [] {
new Parameter (new TypeExpression (Compiler.BuiltinTypes.Object, loc), "obj", 0, null, loc),
new Parameter (new TypeExpression (Compiler.BuiltinTypes.Object, loc), "value", 0, null, loc),
new Parameter (new TypeExpression (Compiler.BuiltinTypes.Bool, loc), "enumType", 0, null, loc),
},
new [] {
Compiler.BuiltinTypes.Object,
Compiler.BuiltinTypes.Object,
Compiler.BuiltinTypes.Bool
});
var m = new Method (this, new TypeExpression (Compiler.BuiltinTypes.Bool, loc),
Modifiers.PUBLIC | Modifiers.STATIC | Modifiers.DEBUGGER_HIDDEN, new MemberName ("NumberMatcher", loc),
parameters, null);
parameters [0].Resolve (m, 0);
parameters [1].Resolve (m, 1);
parameters [2].Resolve (m, 2);
ToplevelBlock top_block = new ToplevelBlock (Compiler, parameters, loc);
m.Block = top_block;
//
// if (enumType)
// return Equals (obj, value);
//
var equals_args = new Arguments (2);
equals_args.Add (new Argument (top_block.GetParameterReference (0, loc)));
equals_args.Add (new Argument (top_block.GetParameterReference (1, loc)));
var if_type = new If (
top_block.GetParameterReference (2, loc),
new Return (new Invocation (new SimpleName ("Equals", loc), equals_args), loc),
loc);
top_block.AddStatement (if_type);
//
// if (obj is Enum || obj == null)
// return false;
//
var if_enum = new If (
new Binary (Binary.Operator.LogicalOr,
new Is (top_block.GetParameterReference (0, loc), new TypeExpression (Compiler.BuiltinTypes.Enum, loc), loc),
new Binary (Binary.Operator.Equality, top_block.GetParameterReference (0, loc), new NullLiteral (loc))),
new Return (new BoolLiteral (Compiler.BuiltinTypes, false, loc), loc),
loc);
top_block.AddStatement (if_enum);
var system_convert = new MemberAccess (new QualifiedAliasMember ("global", "System", loc), "Convert", loc);
var expl_block = new ExplicitBlock (top_block, loc, loc);
//
// var converted = System.Convert.ChangeType (obj, System.Convert.GetTypeCode (value));
//
var lv_converted = LocalVariable.CreateCompilerGenerated (Compiler.BuiltinTypes.Object, top_block, loc);
var arguments_gettypecode = new Arguments (1);
arguments_gettypecode.Add (new Argument (top_block.GetParameterReference (1, loc)));
var gettypecode = new Invocation (new MemberAccess (system_convert, "GetTypeCode", loc), arguments_gettypecode);
var arguments_changetype = new Arguments (1);
arguments_changetype.Add (new Argument (top_block.GetParameterReference (0, loc)));
arguments_changetype.Add (new Argument (gettypecode));
var changetype = new Invocation (new MemberAccess (system_convert, "ChangeType", loc), arguments_changetype);
expl_block.AddStatement (new StatementExpression (new SimpleAssign (new LocalVariableReference (lv_converted, loc), changetype, loc)));
//
// return converted.Equals (value)
//
var equals_arguments = new Arguments (1);
equals_arguments.Add (new Argument (top_block.GetParameterReference (1, loc)));
var equals_invocation = new Invocation (new MemberAccess (new LocalVariableReference (lv_converted, loc), "Equals"), equals_arguments);
expl_block.AddStatement (new Return (equals_invocation, loc));
var catch_block = new ExplicitBlock (top_block, loc, loc);
catch_block.AddStatement (new Return (new BoolLiteral (Compiler.BuiltinTypes, false, loc), loc));
top_block.AddStatement (new TryCatch (expl_block, new List<Catch> () {
new Catch (catch_block, loc)
}, loc, false));
m.Define ();
m.PrepareEmit ();
AddMember (m);
return m;
}
}
PatternMatchingHelper pmh;
public PatternMatchingHelper CreatePatterMatchingHelper ()
{
if (pmh == null) {
pmh = new PatternMatchingHelper (this);
pmh.CreateContainer ();
pmh.DefineContainer ();
pmh.Define ();
AddCompilerGeneratedClass (pmh);
}
return pmh;
}
public CharSet? DefaultCharSet;
public TypeAttributes DefaultCharSetType = TypeAttributes.AnsiClass;
readonly Dictionary<int, List<AnonymousTypeClass>> anonymous_types;
readonly Dictionary<ArrayContainer.TypeRankPair, ArrayContainer> array_types;
readonly Dictionary<TypeSpec, PointerContainer> pointer_types;
readonly Dictionary<TypeSpec, ReferenceContainer> reference_types;
readonly Dictionary<TypeSpec, ReadOnlyReferenceContainer> readonly_reference_types;
readonly Dictionary<TypeSpec, MethodSpec> attrs_cache;
readonly Dictionary<TypeSpec, AwaiterDefinition> awaiters;
readonly Dictionary<TypeSpec, TypeInfo> type_info_cache;
AssemblyDefinition assembly;
readonly CompilerContext context;
readonly RootNamespace global_ns;
readonly Dictionary<string, RootNamespace> alias_ns;
ModuleBuilder builder;
bool has_extenstion_method;
PredefinedAttributes predefined_attributes;
PredefinedTypes predefined_types;
PredefinedMembers predefined_members;
public Binary.PredefinedOperator[] OperatorsBinaryEqualityLifted;
public Binary.PredefinedOperator[] OperatorsBinaryLifted;
static readonly string[] attribute_targets = new string[] { "assembly", "module" };
public ModuleContainer (CompilerContext context)
: base (null, MemberName.Null, null, 0)
{
this.context = context;
caching_flags &= ~(Flags.Obsolete_Undetected | Flags.Excluded_Undetected);
containers = new List<TypeContainer> ();
anonymous_types = new Dictionary<int, List<AnonymousTypeClass>> ();
global_ns = new GlobalRootNamespace ();
alias_ns = new Dictionary<string, RootNamespace> ();
array_types = new Dictionary<ArrayContainer.TypeRankPair, ArrayContainer> ();
pointer_types = new Dictionary<TypeSpec, PointerContainer> ();
reference_types = new Dictionary<TypeSpec, ReferenceContainer> ();
readonly_reference_types = new Dictionary<TypeSpec, ReadOnlyReferenceContainer> ();
attrs_cache = new Dictionary<TypeSpec, MethodSpec> ();
awaiters = new Dictionary<TypeSpec, AwaiterDefinition> ();
type_info_cache = new Dictionary<TypeSpec, TypeInfo> ();
}
#region Properties
internal Dictionary<ArrayContainer.TypeRankPair, ArrayContainer> ArrayTypesCache {
get {
return array_types;
}
}
//
// Cache for parameter-less attributes
//
internal Dictionary<TypeSpec, MethodSpec> AttributeConstructorCache {
get {
return attrs_cache;
}
}
public override AttributeTargets AttributeTargets {
get {
return AttributeTargets.Assembly;
}
}
public ModuleBuilder Builder {
get {
return builder;
}
}
public override CompilerContext Compiler {
get {
return context;
}
}
public int CounterAnonymousTypes { get; set; }
public AssemblyDefinition DeclaringAssembly {
get {
return assembly;
}
}
internal DocumentationBuilder DocumentationBuilder {
get; set;
}
public override string DocCommentHeader {
get {
throw new NotSupportedException ();
}
}
public Evaluator Evaluator {
get; set;
}
public bool HasDefaultCharSet {
get {
return DefaultCharSet.HasValue;
}
}
public bool HasExtensionMethod {
get {
return has_extenstion_method;
}
set {
has_extenstion_method = value;
}
}
public bool HasTypesFullyDefined {
get; set;
}
//
// Returns module global:: namespace
//
public RootNamespace GlobalRootNamespace {
get {
return global_ns;
}
}
public override ModuleContainer Module {
get {
return this;
}
}
internal Dictionary<TypeSpec, PointerContainer> PointerTypesCache {
get {
return pointer_types;
}
}
internal PredefinedAttributes PredefinedAttributes {
get {
return predefined_attributes;
}
}
internal PredefinedMembers PredefinedMembers {
get {
return predefined_members;
}
}
internal PredefinedTypes PredefinedTypes {
get {
return predefined_types;
}
}
internal Dictionary<TypeSpec, ReferenceContainer> ReferenceTypesCache {
get {
return reference_types;
}
}
internal Dictionary<TypeSpec, ReadOnlyReferenceContainer> ReadonlyReferenceTypesCache {
get {
return readonly_reference_types;
}
}
internal Dictionary<TypeSpec, TypeInfo> TypeInfoCache {
get {
return type_info_cache;
}
}
public override string[] ValidAttributeTargets {
get {
return attribute_targets;
}
}
public Dictionary<string, string> GetResourceStrings { get; private set; }
#endregion
public override void Accept (StructuralVisitor visitor)
{
visitor.Visit (this);
}
public void AddAnonymousType (AnonymousTypeClass type)
{
List<AnonymousTypeClass> existing;
if (!anonymous_types.TryGetValue (type.Parameters.Count, out existing))
if (existing == null) {
existing = new List<AnonymousTypeClass> ();
anonymous_types.Add (type.Parameters.Count, existing);
}
existing.Add (type);
}
public void AddAttribute (Attribute attr, IMemberContext context)
{
attr.AttachTo (this, context);
if (attributes == null) {
attributes = new Attributes (attr);
return;
}
attributes.AddAttribute (attr);
}
public void AddAssemblyReferences (List<Assembly> names)
{
if (names == null)
return;
#if STATIC
foreach (var name in names) {
Builder.__GetAssemblyToken (name);
}
#endif
}
public override void AddTypeContainer (TypeContainer tc)
{
AddTypeContainerMember (tc);
}
public override void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
{
if (a.Target == AttributeTargets.Assembly) {
assembly.ApplyAttributeBuilder (a, ctor, cdata, pa);
return;
}
if (a.Type == pa.DefaultCharset) {
switch (a.GetCharSetValue ()) {
case CharSet.Ansi:
case CharSet.None:
break;
case CharSet.Auto:
DefaultCharSet = CharSet.Auto;
DefaultCharSetType = TypeAttributes.AutoClass;
break;
case CharSet.Unicode:
DefaultCharSet = CharSet.Unicode;
DefaultCharSetType = TypeAttributes.UnicodeClass;
break;
default:
Report.Error (1724, a.Location, "Value specified for the argument to `{0}' is not valid",
a.GetSignatureForError ());
break;
}
} else if (a.Type == pa.CLSCompliant) {
Attribute cls = DeclaringAssembly.CLSCompliantAttribute;
if (cls == null) {
Report.Warning (3012, 1, a.Location,
"You must specify the CLSCompliant attribute on the assembly, not the module, to enable CLS compliance checking");
} else if (DeclaringAssembly.IsCLSCompliant != a.GetBoolean ()) {
Report.SymbolRelatedToPreviousError (cls.Location, cls.GetSignatureForError ());
Report.Warning (3017, 1, a.Location,
"You cannot specify the CLSCompliant attribute on a module that differs from the CLSCompliant attribute on the assembly");
return;
}
}
builder.SetCustomAttribute ((ConstructorInfo) ctor.GetMetaInfo (), cdata);
}
public override void CloseContainer ()
{
if (anonymous_types != null) {
foreach (var atypes in anonymous_types)
foreach (var at in atypes.Value)
at.CloseContainer ();
}
base.CloseContainer ();
}
public TypeBuilder CreateBuilder (string name, TypeAttributes attr, int typeSize)
{
return builder.DefineType (name, attr, null, typeSize);
}
//
// Creates alias global namespace
//
public RootNamespace CreateRootNamespace (string alias)
{
if (alias == global_ns.Alias) {
RootNamespace.Error_GlobalNamespaceRedefined (Report, Location.Null);
return global_ns;
}
RootNamespace rn;
if (!alias_ns.TryGetValue (alias, out rn)) {
rn = new RootNamespace (alias);
alias_ns.Add (alias, rn);
}
return rn;
}
public void Create (AssemblyDefinition assembly, ModuleBuilder moduleBuilder)
{
this.assembly = assembly;
builder = moduleBuilder;
}
public override bool Define ()
{
DefineContainer ();
ExpandBaseInterfaces ();
base.Define ();
HasTypesFullyDefined = true;
return true;
}
public override bool DefineContainer ()
{
DefineNamespace ();
return base.DefineContainer ();
}
public void EnableRedefinition ()
{
is_defined = false;
}
public override void EmitContainer ()
{
if (OptAttributes != null)
OptAttributes.Emit ();
if (Compiler.Settings.Unsafe && !assembly.IsSatelliteAssembly) {
var pa = PredefinedAttributes.UnverifiableCode;
if (pa.IsDefined)
pa.EmitAttribute (builder);
}
foreach (var tc in containers) {
tc.PrepareEmit ();
}
base.EmitContainer ();
if (Compiler.Report.Errors == 0 && !Compiler.Settings.WriteMetadataOnly)
VerifyMembers ();
if (anonymous_types != null) {
foreach (var atypes in anonymous_types)
foreach (var at in atypes.Value)
at.EmitContainer ();
}
}
internal override void GenerateDocComment (DocumentationBuilder builder)
{
foreach (var tc in containers)
tc.GenerateDocComment (builder);
}
public AnonymousTypeClass GetAnonymousType (IList<AnonymousTypeParameter> parameters)
{
List<AnonymousTypeClass> candidates;
if (!anonymous_types.TryGetValue (parameters.Count, out candidates))
return null;
int i;
foreach (AnonymousTypeClass at in candidates) {
for (i = 0; i < parameters.Count; ++i) {
if (!parameters [i].Equals (at.Parameters [i]))
break;
}
if (i == parameters.Count)
return at;
}
return null;
}
//
// Return container with awaiter definition. It never returns null
// but all container member can be null for easier error reporting
//
public AwaiterDefinition GetAwaiter (TypeSpec type)
{
AwaiterDefinition awaiter;
if (awaiters.TryGetValue (type, out awaiter))
return awaiter;
awaiter = new AwaiterDefinition ();
//
// Predefined: bool IsCompleted { get; }
//
awaiter.IsCompleted = MemberCache.FindMember (type, MemberFilter.Property ("IsCompleted", Compiler.BuiltinTypes.Bool),
BindingRestriction.InstanceOnly) as PropertySpec;
//
// Predefined: GetResult ()
//
// The method return type is also result type of await expression
//
awaiter.GetResult = MemberCache.FindMember (type, MemberFilter.Method ("GetResult", 0,
ParametersCompiled.EmptyReadOnlyParameters, null),
BindingRestriction.InstanceOnly) as MethodSpec;
//
// Predefined: INotifyCompletion.OnCompleted (System.Action)
//
var nc = PredefinedTypes.INotifyCompletion;
awaiter.INotifyCompletion = !nc.Define () || type.ImplementsInterface (nc.TypeSpec, false);
awaiters.Add (type, awaiter);
return awaiter;
}
public override void GetCompletionStartingWith (string prefix, List<string> results)
{
var names = Evaluator.GetVarNames ();
results.AddRange (names.Where (l => l.StartsWith (prefix)));
}
public RootNamespace GetRootNamespace (string name)
{
RootNamespace rn;
alias_ns.TryGetValue (name, out rn);
return rn;
}
public override string GetSignatureForError ()
{
return "<module>";
}
public Binary.PredefinedOperator[] GetPredefinedEnumAritmeticOperators (TypeSpec enumType, bool nullable)
{
TypeSpec underlying;
Binary.Operator mask = 0;
if (nullable) {
underlying = Nullable.NullableInfo.GetEnumUnderlyingType (this, enumType);
mask = Binary.Operator.NullableMask;
} else {
underlying = EnumSpec.GetUnderlyingType (enumType);
}
var operators = new[] {
new Binary.PredefinedOperator (enumType, underlying,
mask | Binary.Operator.AdditionMask | Binary.Operator.SubtractionMask | Binary.Operator.DecomposedMask, enumType),
new Binary.PredefinedOperator (underlying, enumType,
mask | Binary.Operator.AdditionMask | Binary.Operator.SubtractionMask | Binary.Operator.DecomposedMask, enumType),
new Binary.PredefinedOperator (enumType, mask | Binary.Operator.SubtractionMask, underlying)
};
return operators;
}
public void InitializePredefinedTypes ()
{
predefined_attributes = new PredefinedAttributes (this);
predefined_types = new PredefinedTypes (this);
predefined_members = new PredefinedMembers (this);
OperatorsBinaryEqualityLifted = Binary.CreateEqualityLiftedOperatorsTable (this);
OperatorsBinaryLifted = Binary.CreateStandardLiftedOperatorsTable (this);
}
public override bool IsClsComplianceRequired ()
{
return DeclaringAssembly.IsCLSCompliant;
}
public Attribute ResolveAssemblyAttribute (PredefinedAttribute a_type)
{
Attribute a = OptAttributes.Search ("assembly", a_type);
if (a != null) {
a.Resolve ();
}
return a;
}
public void SetDeclaringAssembly (AssemblyDefinition assembly)
{
// TODO: This setter is quite ugly but I have not found a way around it yet
this.assembly = assembly;
}
public void LoadGetResourceStrings (List<string> fileNames)
{
foreach (var fileName in fileNames) {
if (!File.Exists (fileName)) {
Report.Error (1566, "Error reading resource file `{0}'", fileName);
return;
}
foreach (var l in File.ReadLines (fileName)) {
if (GetResourceStrings == null)
GetResourceStrings = new Dictionary<string, string> ();
var line = l.Trim ();
if (line.Length == 0 || line [0] == '#' || line [0] == ';')
continue;
var epos = line.IndexOf ('=');
if (epos < 0)
continue;
var key = line.Substring (0, epos).Trim ();
var value = line.Substring (epos + 1).Trim ();
GetResourceStrings [key] = value;
}
}
}
}
}