public BlockContext(ResolveContext rc, ExplicitBlock block, TypeSpec returnType)
: this(rc.MemberContext, block, returnType)
{
if (rc.IsUnsafe)
{
flags |= ResolveContext.Options.UnsafeScope;
}
if (rc.HasSet(ResolveContext.Options.CheckedScope))
{
flags |= ResolveContext.Options.CheckedScope;
}
if (rc.IsInProbingMode)
{
flags |= ResolveContext.Options.ProbingMode;
}
if (rc.HasSet(ResolveContext.Options.FieldInitializerScope))
{
flags |= ResolveContext.Options.FieldInitializerScope;
}
if (rc.HasSet(ResolveContext.Options.ExpressionTreeConversion))
{
flags |= ResolveContext.Options.ExpressionTreeConversion;
}
if (rc.HasSet(ResolveContext.Options.BaseInitializer))
{
flags |= ResolveContext.Options.BaseInitializer;
}
}
public BlockContext (IMemberContext mc, ExplicitBlock block, TypeSpec returnType)
: base (mc)
{
if (returnType == null)
throw new ArgumentNullException ("returnType");
this.return_type = returnType;
// TODO: check for null value
CurrentBlock = block;
}
public FieldInitializerContext(IMemberContext mc, BlockContext constructorContext)
: base(mc, null, constructorContext.ReturnType)
{
flags |= Options.FieldInitializerScope | Options.ConstructorScope;
this.ctor_block = constructorContext.CurrentBlock.Explicit;
if (ctor_block.IsCompilerGenerated)
{
CurrentBlock = ctor_block;
}
}
public BlockContext (IMemberContext mc, ExplicitBlock block, TypeSpec returnType)
: base (mc)
{
if (returnType == null)
throw new ArgumentNullException ("returnType");
this.return_type = returnType;
// TODO: check for null value
CurrentBlock = block;
}
public BlockContext(ResolveContext rc, ExplicitBlock block, TypeSpec returnType)
: this(rc.MemberContext, block, returnType)
{
if (rc.IsUnsafe)
{
flags |= ResolveContext.Options.UnsafeScope;
}
if (rc.HasSet(ResolveContext.Options.CheckedScope))
{
flags |= ResolveContext.Options.CheckedScope;
}
}
public BlockContext (ResolveContext rc, ExplicitBlock block, TypeSpec returnType)
: this (rc.MemberContext, block, returnType)
{
if (rc.IsUnsafe)
flags |= ResolveContext.Options.UnsafeScope;
if (rc.HasSet (ResolveContext.Options.CheckedScope))
flags |= ResolveContext.Options.CheckedScope;
if (!rc.ConstantCheckState)
flags &= ~Options.ConstantCheckState;
if (rc.IsInProbingMode)
flags |= ResolveContext.Options.ProbingMode;
if (rc.HasSet (ResolveContext.Options.FieldInitializerScope))
flags |= ResolveContext.Options.FieldInitializerScope;
if (rc.HasSet (ResolveContext.Options.ExpressionTreeConversion))
flags |= ResolveContext.Options.ExpressionTreeConversion;
if (rc.HasSet (ResolveContext.Options.BaseInitializer))
flags |= ResolveContext.Options.BaseInitializer;
}
public TryFinally(Statement stmt, ExplicitBlock fini, Location loc)
: base(stmt, loc)
{
this.fini = fini;
}
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);
}
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;
}
public FieldInitializerContext (IMemberContext mc, ResolveContext constructorContext)
: base (mc, Options.FieldInitializerScope | Options.ConstructorScope)
{
this.ctor_block = constructorContext.CurrentBlock.Explicit;
}
public Except(ExplicitBlock block, Location loc)
{
this.block = block;
this.loc = loc;
}
void FabricateBodyStatement ()
{
//
// Delegate obj1 = backing_field
// do {
// Delegate obj2 = obj1;
// obj1 = Interlocked.CompareExchange (ref backing_field, Delegate.Combine|Remove(obj2, value), obj1);
// } while ((object)obj1 != (object)obj2)
//
var field_info = ((EventField) method).backing_field;
FieldExpr f_expr = new FieldExpr (field_info, Location);
if (!IsStatic)
f_expr.InstanceExpression = new CompilerGeneratedThis (Parent.CurrentType, Location);
var obj1 = LocalVariable.CreateCompilerGenerated (field_info.MemberType, block, Location);
var obj2 = LocalVariable.CreateCompilerGenerated (field_info.MemberType, block, Location);
block.AddStatement (new StatementExpression (new SimpleAssign (new LocalVariableReference (obj1, Location), f_expr)));
var cond = new BooleanExpression (new Binary (Binary.Operator.Inequality,
new Cast (new TypeExpression (Module.Compiler.BuiltinTypes.Object, Location), new LocalVariableReference (obj1, Location), Location),
new Cast (new TypeExpression (Module.Compiler.BuiltinTypes.Object, Location), new LocalVariableReference (obj2, Location), Location)));
var body = new ExplicitBlock (block, Location, Location);
block.AddStatement (new Do (body, cond, Location, Location));
body.AddStatement (new StatementExpression (
new SimpleAssign (new LocalVariableReference (obj2, Location), new LocalVariableReference (obj1, Location))));
var args_oper = new Arguments (2);
args_oper.Add (new Argument (new LocalVariableReference (obj2, Location)));
args_oper.Add (new Argument (block.GetParameterReference (0, Location)));
var op_method = GetOperation (Location);
var args = new Arguments (3);
args.Add (new Argument (f_expr, Argument.AType.Ref));
args.Add (new Argument (new Cast (
new TypeExpression (field_info.MemberType, Location),
new Invocation (MethodGroupExpr.CreatePredefined (op_method, op_method.DeclaringType, Location), args_oper),
Location)));
args.Add (new Argument (new LocalVariableReference (obj1, Location)));
var cas = Module.PredefinedMembers.InterlockedCompareExchange_T.Resolve (Location);
if (cas == null)
return;
body.AddStatement (new StatementExpression (new SimpleAssign (
new LocalVariableReference (obj1, Location),
new Invocation (MethodGroupExpr.CreatePredefined (cas, cas.DeclaringType, Location), args))));
}
//
// Initializes all hoisted variables
//
public void EmitStoreyInstantiation (EmitContext ec, ExplicitBlock block)
{
// There can be only one instance variable for each storey type
if (Instance != null)
throw new InternalErrorException ();
//
// Create an instance of this storey
//
ResolveContext rc = new ResolveContext (ec.MemberContext);
rc.CurrentBlock = block;
var storey_type_expr = CreateStoreyTypeExpression (ec);
var source = new New (storey_type_expr, null, Location).Resolve (rc);
//
// When the current context is async (or iterator) lift local storey
// instantiation to the currect storey
//
if (ec.CurrentAnonymousMethod is StateMachineInitializer && (block.HasYield || block.HasAwait)) {
//
// Unfortunately, normal capture mechanism could not be used because we are
// too late in the pipeline and standart assign cannot be used either due to
// recursive nature of GetStoreyInstanceExpression
//
var field = ec.CurrentAnonymousMethod.Storey.AddCompilerGeneratedField (
LocalVariable.GetCompilerGeneratedName (block), storey_type_expr, true);
field.Define ();
field.Emit ();
var fexpr = new FieldExpr (field, Location);
fexpr.InstanceExpression = new CompilerGeneratedThis (ec.CurrentType, Location);
fexpr.EmitAssign (ec, source, false, false);
Instance = fexpr;
} else {
var local = TemporaryVariableReference.Create (source.Type, block, Location);
if (source.Type.IsStruct) {
local.LocalInfo.CreateBuilder (ec);
} else {
local.EmitAssign (ec, source);
}
Instance = local;
}
EmitHoistedFieldsInitialization (rc, ec);
// TODO: Implement properly
//SymbolWriter.DefineScopeVariable (ID, Instance.Builder);
}
//
// Creates a link between hoisted variable block and the anonymous method storey
//
// An anonymous method can reference variables from any outer block, but they are
// hoisted in their own ExplicitBlock. When more than one block is referenced we
// need to create another link between those variable storeys
//
public void AddReferenceFromChildrenBlock (ExplicitBlock block)
{
if (children_references == null)
children_references = new List<ExplicitBlock> ();
if (!children_references.Contains (block))
children_references.Add (block);
}
public AnonymousMethodStorey (ExplicitBlock block, TypeDefinition parent, MemberBase host, TypeParameters tparams, string name, MemberKind kind)
: base (parent, MakeMemberName (host, name, parent.PartialContainer.CounterAnonymousContainers, tparams, block.StartLocation),
tparams, 0, kind)
{
OriginalSourceBlock = block;
ID = parent.PartialContainer.CounterAnonymousContainers++;
}
public override void Emit()
{
var base_type = Parent.PartialContainer.BaseType;
if (base_type != null && Block != null) {
var base_dtor = MemberCache.FindMember (base_type,
new MemberFilter (MetadataName, 0, MemberKind.Destructor, null, null), BindingRestriction.InstanceOnly) as MethodSpec;
if (base_dtor == null)
throw new NotImplementedException ();
MethodGroupExpr method_expr = MethodGroupExpr.CreatePredefined (base_dtor, base_type, Location);
method_expr.InstanceExpression = new BaseThis (base_type, Location);
var try_block = new ExplicitBlock (block, block.StartLocation, block.EndLocation) {
IsCompilerGenerated = true
};
var finaly_block = new ExplicitBlock (block, Location, Location) {
IsCompilerGenerated = true
};
//
// 0-size arguments to avoid CS0250 error
// TODO: Should use AddScopeStatement or something else which emits correct
// debugger scope
//
finaly_block.AddStatement (new StatementExpression (new Invocation (method_expr, new Arguments (0)), Location.Null));
var tf = new TryFinally (try_block, finaly_block, Location);
block.WrapIntoDestructor (tf, try_block);
}
base.Emit ();
}
public FieldInitializerContext(IMemberContext mc, ResolveContext constructorContext)
: base(mc, Options.FieldInitializerScope | Options.ConstructorScope)
{
this.ctor_block = constructorContext.CurrentBlock.Explicit;
}
public FieldInitializerContext (IMemberContext mc, BlockContext constructorContext)
: base (mc, null, constructorContext.ReturnType)
{
flags |= Options.FieldInitializerScope | Options.ConstructorScope;
this.ctor_block = constructorContext.CurrentBlock.Explicit;
if (ctor_block.IsCompilerGenerated)
CurrentBlock = ctor_block;
}