protected override bool DoDefineMembers ()
{
if (!base.DoDefineMembers ())
return false;
Location loc = Location;
var equals_parameters = ParametersCompiled.CreateFullyResolved (
new Parameter (new TypeExpression (Compiler.BuiltinTypes.Object, loc), "obj", 0, null, loc), Compiler.BuiltinTypes.Object);
Method equals = new Method (this, new TypeExpression (Compiler.BuiltinTypes.Bool, loc),
Modifiers.PUBLIC | Modifiers.OVERRIDE | Modifiers.DEBUGGER_HIDDEN, new MemberName ("Equals", loc),
equals_parameters, null);
equals_parameters[0].Resolve (equals, 0);
Method tostring = new Method (this, new TypeExpression (Compiler.BuiltinTypes.String, loc),
Modifiers.PUBLIC | Modifiers.OVERRIDE | Modifiers.DEBUGGER_HIDDEN, new MemberName ("ToString", loc),
Mono.CSharp.ParametersCompiled.EmptyReadOnlyParameters, null);
ToplevelBlock equals_block = new ToplevelBlock (Compiler, equals.ParameterInfo, loc);
TypeExpr current_type;
if (CurrentTypeParameters != null) {
var targs = new TypeArguments ();
for (int i = 0; i < CurrentTypeParameters.Count; ++i) {
targs.Add (new TypeParameterExpr (CurrentTypeParameters[i], Location));
}
current_type = new GenericTypeExpr (Definition, targs, loc);
} else {
current_type = new TypeExpression (Definition, loc);
}
var li_other = LocalVariable.CreateCompilerGenerated (CurrentType, equals_block, loc);
equals_block.AddStatement (new BlockVariableDeclaration (new TypeExpression (li_other.Type, loc), li_other));
var other_variable = new LocalVariableReference (li_other, loc);
MemberAccess system_collections_generic = new MemberAccess (new MemberAccess (
new QualifiedAliasMember ("global", "System", loc), "Collections", loc), "Generic", loc);
Expression rs_equals = null;
Expression string_concat = new StringConstant (Compiler.BuiltinTypes, "{", loc);
Expression rs_hashcode = new IntConstant (Compiler.BuiltinTypes, -2128831035, loc);
for (int i = 0; i < parameters.Count; ++i) {
var p = parameters [i];
var f = (Field) Members [i * 2];
MemberAccess equality_comparer = new MemberAccess (new MemberAccess (
system_collections_generic, "EqualityComparer",
new TypeArguments (new SimpleName (CurrentTypeParameters [i].Name, loc)), loc),
"Default", loc);
Arguments arguments_equal = new Arguments (2);
arguments_equal.Add (new Argument (new MemberAccess (new This (f.Location), f.Name)));
arguments_equal.Add (new Argument (new MemberAccess (other_variable, f.Name)));
Expression field_equal = new Invocation (new MemberAccess (equality_comparer,
"Equals", loc), arguments_equal);
Arguments arguments_hashcode = new Arguments (1);
arguments_hashcode.Add (new Argument (new MemberAccess (new This (f.Location), f.Name)));
Expression field_hashcode = new Invocation (new MemberAccess (equality_comparer,
"GetHashCode", loc), arguments_hashcode);
IntConstant FNV_prime = new IntConstant (Compiler.BuiltinTypes, 16777619, loc);
rs_hashcode = new Binary (Binary.Operator.Multiply,
new Binary (Binary.Operator.ExclusiveOr, rs_hashcode, field_hashcode),
FNV_prime);
Expression field_to_string = new Conditional (new BooleanExpression (new Binary (Binary.Operator.Inequality,
new MemberAccess (new This (f.Location), f.Name), new NullLiteral (loc))),
new Invocation (new MemberAccess (
new MemberAccess (new This (f.Location), f.Name), "ToString"), null),
new StringConstant (Compiler.BuiltinTypes, string.Empty, loc), loc);
if (rs_equals == null) {
rs_equals = field_equal;
string_concat = new Binary (Binary.Operator.Addition,
string_concat,
new Binary (Binary.Operator.Addition,
new StringConstant (Compiler.BuiltinTypes, " " + p.Name + " = ", loc),
field_to_string));
continue;
}
//
// Implementation of ToString () body using string concatenation
//
string_concat = new Binary (Binary.Operator.Addition,
new Binary (Binary.Operator.Addition,
string_concat,
new StringConstant (Compiler.BuiltinTypes, ", " + p.Name + " = ", loc)),
field_to_string);
rs_equals = new Binary (Binary.Operator.LogicalAnd, rs_equals, field_equal);
}
string_concat = new Binary (Binary.Operator.Addition,
string_concat,
new StringConstant (Compiler.BuiltinTypes, " }", loc));
//
// Equals (object obj) override
//
var other_variable_assign = new TemporaryVariableReference (li_other, loc);
equals_block.AddStatement (new StatementExpression (
new SimpleAssign (other_variable_assign,
new As (equals_block.GetParameterReference (0, loc),
current_type, loc), loc)));
Expression equals_test = new Binary (Binary.Operator.Inequality, other_variable, new NullLiteral (loc));
if (rs_equals != null)
equals_test = new Binary (Binary.Operator.LogicalAnd, equals_test, rs_equals);
equals_block.AddStatement (new Return (equals_test, loc));
equals.Block = equals_block;
equals.Define ();
Members.Add (equals);
//
// GetHashCode () override
//
Method hashcode = new Method (this, new TypeExpression (Compiler.BuiltinTypes.Int, loc),
Modifiers.PUBLIC | Modifiers.OVERRIDE | Modifiers.DEBUGGER_HIDDEN,
new MemberName ("GetHashCode", loc),
Mono.CSharp.ParametersCompiled.EmptyReadOnlyParameters, null);
//
// Modified FNV with good avalanche behavior and uniform
// distribution with larger hash sizes.
//
// const int FNV_prime = 16777619;
// int hash = (int) 2166136261;
// foreach (int d in data)
// hash = (hash ^ d) * FNV_prime;
// hash += hash << 13;
// hash ^= hash >> 7;
// hash += hash << 3;
// hash ^= hash >> 17;
// hash += hash << 5;
ToplevelBlock hashcode_top = new ToplevelBlock (Compiler, loc);
Block hashcode_block = new Block (hashcode_top, loc, loc);
hashcode_top.AddStatement (new Unchecked (hashcode_block, loc));
var li_hash = LocalVariable.CreateCompilerGenerated (Compiler.BuiltinTypes.Int, hashcode_top, loc);
hashcode_block.AddStatement (new BlockVariableDeclaration (new TypeExpression (li_hash.Type, loc), li_hash));
LocalVariableReference hash_variable_assign = new LocalVariableReference (li_hash, loc);
hashcode_block.AddStatement (new StatementExpression (
new SimpleAssign (hash_variable_assign, rs_hashcode)));
var hash_variable = new LocalVariableReference (li_hash, loc);
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.Addition, hash_variable,
new Binary (Binary.Operator.LeftShift, hash_variable, new IntConstant (Compiler.BuiltinTypes, 13, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.ExclusiveOr, hash_variable,
new Binary (Binary.Operator.RightShift, hash_variable, new IntConstant (Compiler.BuiltinTypes, 7, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.Addition, hash_variable,
new Binary (Binary.Operator.LeftShift, hash_variable, new IntConstant (Compiler.BuiltinTypes, 3, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.ExclusiveOr, hash_variable,
new Binary (Binary.Operator.RightShift, hash_variable, new IntConstant (Compiler.BuiltinTypes, 17, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.Addition, hash_variable,
new Binary (Binary.Operator.LeftShift, hash_variable, new IntConstant (Compiler.BuiltinTypes, 5, loc)))));
hashcode_block.AddStatement (new Return (hash_variable, loc));
hashcode.Block = hashcode_top;
hashcode.Define ();
Members.Add (hashcode);
//
// ToString () override
//
ToplevelBlock tostring_block = new ToplevelBlock (Compiler, loc);
tostring_block.AddStatement (new Return (string_concat, loc));
tostring.Block = tostring_block;
tostring.Define ();
Members.Add (tostring);
return true;
}
//
// Creates a proxy base method call inside this container for hoisted base member calls
//
public MethodSpec CreateHoistedBaseCallProxy (ResolveContext rc, MethodSpec method)
{
Method proxy_method;
//
// One proxy per base method is enough
//
if (hoisted_base_call_proxies == null) {
hoisted_base_call_proxies = new Dictionary<MethodSpec, Method> ();
proxy_method = null;
} else {
hoisted_base_call_proxies.TryGetValue (method, out proxy_method);
}
if (proxy_method == null) {
string name = CompilerGeneratedContainer.MakeName (method.Name, null, "BaseCallProxy", hoisted_base_call_proxies.Count);
MemberName member_name;
TypeArguments targs = null;
TypeSpec return_type = method.ReturnType;
var local_param_types = method.Parameters.Types;
if (method.IsGeneric) {
//
// Copy all base generic method type parameters info
//
var hoisted_tparams = method.GenericDefinition.TypeParameters;
var tparams = new TypeParameters ();
targs = new TypeArguments ();
targs.Arguments = new TypeSpec[hoisted_tparams.Length];
for (int i = 0; i < hoisted_tparams.Length; ++i) {
var tp = hoisted_tparams[i];
var local_tp = new TypeParameter (tp, null, new MemberName (tp.Name, Location), null);
tparams.Add (local_tp);
targs.Add (new SimpleName (tp.Name, Location));
targs.Arguments[i] = local_tp.Type;
}
member_name = new MemberName (name, tparams, Location);
//
// Mutate any method type parameters from original
// to newly created hoisted version
//
var mutator = new TypeParameterMutator (hoisted_tparams, tparams);
return_type = mutator.Mutate (return_type);
local_param_types = mutator.Mutate (local_param_types);
} else {
member_name = new MemberName (name);
}
var base_parameters = new Parameter[method.Parameters.Count];
for (int i = 0; i < base_parameters.Length; ++i) {
var base_param = method.Parameters.FixedParameters[i];
base_parameters[i] = new Parameter (new TypeExpression (local_param_types [i], Location),
base_param.Name, base_param.ModFlags, null, Location);
base_parameters[i].Resolve (this, i);
}
var cloned_params = ParametersCompiled.CreateFullyResolved (base_parameters, method.Parameters.Types);
if (method.Parameters.HasArglist) {
cloned_params.FixedParameters[0] = new Parameter (null, "__arglist", Parameter.Modifier.NONE, null, Location);
cloned_params.Types[0] = Module.PredefinedTypes.RuntimeArgumentHandle.Resolve ();
}
// Compiler generated proxy
proxy_method = new Method (this, new TypeExpression (return_type, Location),
Modifiers.PRIVATE | Modifiers.COMPILER_GENERATED | Modifiers.DEBUGGER_HIDDEN,
member_name, cloned_params, null);
var block = new ToplevelBlock (Compiler, proxy_method.ParameterInfo, Location) {
IsCompilerGenerated = true
};
var mg = MethodGroupExpr.CreatePredefined (method, method.DeclaringType, Location);
mg.InstanceExpression = new BaseThis (method.DeclaringType, Location);
if (targs != null)
mg.SetTypeArguments (rc, targs);
// Get all the method parameters and pass them as arguments
var real_base_call = new Invocation (mg, block.GetAllParametersArguments ());
Statement statement;
if (method.ReturnType.Kind == MemberKind.Void)
statement = new StatementExpression (real_base_call);
else
statement = new Return (real_base_call, Location);
block.AddStatement (statement);
proxy_method.Block = block;
members.Add (proxy_method);
proxy_method.Define ();
proxy_method.PrepareEmit ();
hoisted_base_call_proxies.Add (method, proxy_method);
}
return proxy_method.Spec;
}
public static AnonymousTypeClass Create (TypeContainer parent, IList<AnonymousTypeParameter> parameters, Location loc)
{
string name = ClassNamePrefix + parent.Module.CounterAnonymousTypes++;
ParametersCompiled all_parameters;
TypeParameters tparams = null;
SimpleName[] t_args;
if (parameters.Count == 0) {
all_parameters = ParametersCompiled.EmptyReadOnlyParameters;
t_args = null;
} else {
t_args = new SimpleName[parameters.Count];
tparams = new TypeParameters ();
Parameter[] ctor_params = new Parameter[parameters.Count];
for (int i = 0; i < parameters.Count; ++i) {
AnonymousTypeParameter p = parameters[i];
for (int ii = 0; ii < i; ++ii) {
if (parameters[ii].Name == p.Name) {
parent.Compiler.Report.Error (833, parameters[ii].Location,
"`{0}': An anonymous type cannot have multiple properties with the same name",
p.Name);
p = new AnonymousTypeParameter (null, "$" + i.ToString (), p.Location);
parameters[i] = p;
break;
}
}
t_args[i] = new SimpleName ("<" + p.Name + ">__T", p.Location);
tparams.Add (new TypeParameter (i, new MemberName (t_args[i].Name, p.Location), null, null, Variance.None));
ctor_params[i] = new Parameter (t_args[i], p.Name, Parameter.Modifier.NONE, null, p.Location);
}
all_parameters = new ParametersCompiled (ctor_params);
}
//
// Create generic anonymous type host with generic arguments
// named upon properties names
//
AnonymousTypeClass a_type = new AnonymousTypeClass (parent.Module, new MemberName (name, tparams, loc), parameters, loc);
Constructor c = new Constructor (a_type, name, Modifiers.PUBLIC | Modifiers.DEBUGGER_HIDDEN,
null, all_parameters, loc);
c.Block = new ToplevelBlock (parent.Module.Compiler, c.ParameterInfo, loc);
//
// Create fields and constructor body with field initialization
//
bool error = false;
for (int i = 0; i < parameters.Count; ++i) {
AnonymousTypeParameter p = parameters [i];
Field f = new Field (a_type, t_args [i], Modifiers.PRIVATE | Modifiers.READONLY | Modifiers.DEBUGGER_HIDDEN,
new MemberName ("<" + p.Name + ">", p.Location), null);
if (!a_type.AddField (f)) {
error = true;
continue;
}
c.Block.AddStatement (new StatementExpression (
new SimpleAssign (new MemberAccess (new This (p.Location), f.Name),
c.Block.GetParameterReference (i, p.Location))));
ToplevelBlock get_block = new ToplevelBlock (parent.Module.Compiler, p.Location);
get_block.AddStatement (new Return (
new MemberAccess (new This (p.Location), f.Name), p.Location));
Property prop = new Property (a_type, t_args [i], Modifiers.PUBLIC,
new MemberName (p.Name, p.Location), null);
prop.Get = new Property.GetMethod (prop, 0, null, p.Location);
prop.Get.Block = get_block;
a_type.AddMember (prop);
}
if (error)
return null;
a_type.AddConstructor (c);
return a_type;
}
void Define_Current(bool is_generic)
{
TypeExpr type;
MemberName name = new MemberName (QualifiedAliasMember.GlobalAlias, "System", null, Location);
name = new MemberName (name, "Collections", Location);
if (is_generic) {
name = new MemberName (name, "Generic", Location);
name = new MemberName (name, "IEnumerator", generic_args, Location);
type = iterator_type_expr;
} else {
name = new MemberName (name, "IEnumerator");
type = TypeManager.system_object_expr;
}
name = new MemberName (name, "Current", Location);
ToplevelBlock get_block = new ToplevelBlock (Compiler, Location);
get_block.AddStatement (new Return (new DynamicFieldExpr (CurrentField, Location), Location));
Accessor getter = new Accessor (get_block, 0, null, null, Location);
Property current = new Property (
this, type, Modifiers.DEBUGGER_HIDDEN, name, null, getter, null, false);
AddProperty (current);
}
public DisposeMethod(IteratorStorey host)
: base(host, TypeManager.system_void_expr, Modifiers.PUBLIC, new MemberName ("Dispose", host.Location))
{
host.AddMethod (this);
Block = new ToplevelBlock (Compiler, host.Iterator.Container, ParametersCompiled.EmptyReadOnlyParameters, Location);
Block.AddStatement (new DisposeMethodStatement (host.Iterator));
}
public override void Emit (DeclSpace parent)
{
if ((method.ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0) {
if (parent is Class) {
MethodBuilder mb = method_data.MethodBuilder;
mb.SetImplementationFlags (mb.GetMethodImplementationFlags () | MethodImplAttributes.Synchronized);
}
var field_info = ((EventField) method).backing_field;
FieldExpr f_expr = new FieldExpr (field_info, Location);
if ((method.ModFlags & Modifiers.STATIC) == 0)
f_expr.InstanceExpression = new CompilerGeneratedThis (field_info.Spec.MemberType, Location);
block = new ToplevelBlock (Compiler, ParameterInfo, Location);
block.AddStatement (new StatementExpression (
new CompoundAssign (Operation,
f_expr,
block.GetParameterReference (ParameterInfo[0].Name, Location),
Location)));
}
base.Emit (parent);
}
//
// Creates a proxy base method call inside this container for hoisted base member calls
//
public MethodSpec CreateHoistedBaseCallProxy (ResolveContext rc, MethodSpec method)
{
Method proxy_method;
//
// One proxy per base method is enough
//
if (hoisted_base_call_proxies == null) {
hoisted_base_call_proxies = new Dictionary<MethodSpec, Method> ();
proxy_method = null;
} else {
hoisted_base_call_proxies.TryGetValue (method, out proxy_method);
}
if (proxy_method == null) {
string name = CompilerGeneratedClass.MakeName (method.Name, null, "BaseCallProxy", hoisted_base_call_proxies.Count);
var base_parameters = new Parameter[method.Parameters.Count];
for (int i = 0; i < base_parameters.Length; ++i) {
var base_param = method.Parameters.FixedParameters[i];
base_parameters[i] = new Parameter (new TypeExpression (method.Parameters.Types[i], Location),
base_param.Name, base_param.ModFlags, null, Location);
base_parameters[i].Resolve (this, i);
}
var cloned_params = ParametersCompiled.CreateFullyResolved (base_parameters, method.Parameters.Types);
if (method.Parameters.HasArglist) {
cloned_params.FixedParameters[0] = new Parameter (null, "__arglist", Parameter.Modifier.NONE, null, Location);
cloned_params.Types[0] = Module.PredefinedTypes.RuntimeArgumentHandle.Resolve (Location);
}
GenericMethod generic_method;
MemberName member_name;
if (method.IsGeneric) {
//
// Copy all base generic method type parameters info
//
var hoisted_tparams = method.GenericDefinition.TypeParameters;
var targs = new TypeArguments ();
var type_params = new TypeParameter[hoisted_tparams.Length];
for (int i = 0; i < type_params.Length; ++i) {
var tp = hoisted_tparams[i];
targs.Add (new TypeParameterName (tp.Name, null, Location));
type_params[i] = new TypeParameter (tp, this, null, new MemberName (tp.Name), null);
}
member_name = new MemberName (name, targs, Location);
generic_method = new GenericMethod (NamespaceEntry, this, member_name, type_params,
new TypeExpression (method.ReturnType, Location), cloned_params);
} else {
member_name = new MemberName (name);
generic_method = null;
}
// Compiler generated proxy
proxy_method = new Method (this, generic_method, new TypeExpression (method.ReturnType, Location),
Modifiers.PRIVATE | Modifiers.COMPILER_GENERATED | Modifiers.DEBUGGER_HIDDEN,
member_name, cloned_params, null);
var block = new ToplevelBlock (Compiler, proxy_method.ParameterInfo, Location);
var mg = MethodGroupExpr.CreatePredefined (method, method.DeclaringType, Location);
mg.InstanceExpression = new BaseThis (method.DeclaringType, Location);
// Get all the method parameters and pass them as arguments
var real_base_call = new Invocation (mg, block.GetAllParametersArguments ());
Statement statement;
if (method.ReturnType == TypeManager.void_type)
statement = new StatementExpression (real_base_call);
else
statement = new Return (real_base_call, Location);
block.AddStatement (statement);
proxy_method.Block = block;
methods.Add (proxy_method);
proxy_method.Define ();
hoisted_base_call_proxies.Add (method, proxy_method);
}
return proxy_method.Spec;
}
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 static AnonymousTypeClass Create (CompilerContext ctx, TypeContainer parent, IList<AnonymousTypeParameter> parameters, Location loc)
{
string name = ClassNamePrefix + types_counter++;
SimpleName [] t_args = new SimpleName [parameters.Count];
TypeParameterName [] t_params = new TypeParameterName [parameters.Count];
Parameter [] ctor_params = new Parameter [parameters.Count];
for (int i = 0; i < parameters.Count; ++i) {
AnonymousTypeParameter p = (AnonymousTypeParameter) parameters [i];
t_args [i] = new SimpleName ("<" + p.Name + ">__T", p.Location);
t_params [i] = new TypeParameterName (t_args [i].Name, null, p.Location);
ctor_params [i] = new Parameter (t_args [i], p.Name, 0, null, p.Location);
}
//
// Create generic anonymous type host with generic arguments
// named upon properties names
//
AnonymousTypeClass a_type = new AnonymousTypeClass (parent.NamespaceEntry.SlaveDeclSpace,
new MemberName (name, new TypeArguments (t_params), loc), parameters, loc);
if (parameters.Count > 0)
a_type.SetParameterInfo (null);
Constructor c = new Constructor (a_type, name, Modifiers.PUBLIC | Modifiers.DEBUGGER_HIDDEN,
null, new AnonymousParameters (ctx, ctor_params), null, loc);
c.Block = new ToplevelBlock (ctx, c.ParameterInfo, loc);
//
// Create fields and contructor body with field initialization
//
bool error = false;
for (int i = 0; i < parameters.Count; ++i) {
AnonymousTypeParameter p = (AnonymousTypeParameter) parameters [i];
Field f = new Field (a_type, t_args [i], Modifiers.PRIVATE | Modifiers.READONLY,
new MemberName ("<" + p.Name + ">", p.Location), null);
if (!a_type.AddField (f)) {
error = true;
continue;
}
c.Block.AddStatement (new StatementExpression (
new SimpleAssign (new MemberAccess (new This (p.Location), f.Name),
c.Block.GetParameterReference (p.Name, p.Location))));
ToplevelBlock get_block = new ToplevelBlock (ctx, p.Location);
get_block.AddStatement (new Return (
new MemberAccess (new This (p.Location), f.Name), p.Location));
Property prop = new Property (a_type, t_args [i], Modifiers.PUBLIC,
new MemberName (p.Name, p.Location), null);
prop.Get = new Property.GetMethod (prop, 0, null, p.Location);
prop.Get.Block = get_block;
a_type.AddProperty (prop);
}
if (error)
return null;
a_type.AddConstructor (c);
return a_type;
}
protected override bool CheckBase()
{
// Don't check base, the destructor has special syntax
var base_type = Parent.PartialContainer.BaseType;
if (base_type == null)
return true;
if (Block != null) {
MethodGroupExpr method_expr = Expression.MethodLookup (Parent.Module.Compiler, Parent.Definition, base_type, MemberKind.Destructor, MetadataName, 0, Location);
if (method_expr == null)
throw new NotImplementedException ();
method_expr.IsBase = true;
method_expr.InstanceExpression = new CompilerGeneratedThis (Parent.Definition, Location);
ToplevelBlock new_block = new ToplevelBlock (Compiler, Block.StartLocation);
new_block.EndLocation = Block.EndLocation;
Block finaly_block = new ExplicitBlock (new_block, Location, Location);
Block try_block = new Block (new_block, block);
//
// 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))));
new_block.AddStatement (new TryFinally (try_block, finaly_block, Location));
block = new_block;
}
return true;
}
//
// Reformats this block to be top-level iterator block
//
public IteratorStorey ChangeToIterator (Iterator iterator, ToplevelBlock source)
{
IsIterator = true;
// Creates block with original statements
AddStatement (new IteratorStatement (iterator, new Block (this, source)));
source.statements = new List<Statement> (1);
source.AddStatement (new Return (iterator, iterator.Location));
source.IsIterator = false;
IteratorStorey iterator_storey = new IteratorStorey (iterator);
source.am_storey = iterator_storey;
return iterator_storey;
}
void Define_Current (bool is_generic)
{
TypeExpr type;
MemberName name = new MemberName (QualifiedAliasMember.GlobalAlias, "System", null, Location);
name = new MemberName (name, "Collections", Location);
if (is_generic) {
name = new MemberName (name, "Generic", Location);
name = new MemberName (name, "IEnumerator", generic_args, Location);
type = iterator_type_expr;
} else {
name = new MemberName (name, "IEnumerator");
type = new TypeExpression (Compiler.BuiltinTypes.Object, Location);
}
name = new MemberName (name, "Current", Location);
ToplevelBlock get_block = new ToplevelBlock (Compiler, Location);
get_block.AddStatement (new Return (new DynamicFieldExpr (CurrentField, Location), Location));
Property current = new Property (this, type, Modifiers.DEBUGGER_HIDDEN, name, null);
current.Get = new Property.GetMethod (current, 0, null, Location);
current.Get.Block = get_block;
AddProperty (current);
}
void DefineOverrides ()
{
Location loc = Location;
Method equals = new Method (this, null, TypeManager.system_boolean_expr,
Modifiers.PUBLIC | Modifiers.OVERRIDE | Modifiers.DEBUGGER_HIDDEN, new MemberName ("Equals", loc),
Mono.CSharp.ParametersCompiled.CreateFullyResolved (new Parameter (null, "obj", 0, null, loc), TypeManager.object_type), null);
Method tostring = new Method (this, null, TypeManager.system_string_expr,
Modifiers.PUBLIC | Modifiers.OVERRIDE | Modifiers.DEBUGGER_HIDDEN, new MemberName ("ToString", loc),
Mono.CSharp.ParametersCompiled.EmptyReadOnlyParameters, null);
ToplevelBlock equals_block = new ToplevelBlock (Compiler, equals.Parameters, loc);
TypeExpr current_type;
if (IsGeneric)
current_type = new GenericTypeExpr (this, loc);
else
current_type = new TypeExpression (TypeBuilder, loc);
equals_block.AddVariable (current_type, "other", loc);
LocalVariableReference other_variable = new LocalVariableReference (equals_block, "other", loc);
MemberAccess system_collections_generic = new MemberAccess (new MemberAccess (
new QualifiedAliasMember ("global", "System", loc), "Collections", loc), "Generic", loc);
Expression rs_equals = null;
Expression string_concat = new StringConstant ("{", loc);
Expression rs_hashcode = new IntConstant (-2128831035, loc);
for (int i = 0; i < parameters.Count; ++i) {
AnonymousTypeParameter p = (AnonymousTypeParameter) parameters [i];
Field f = (Field) Fields [i];
MemberAccess equality_comparer = new MemberAccess (new MemberAccess (
system_collections_generic, "EqualityComparer",
new TypeArguments (new SimpleName (TypeParameters [i].Name, loc)), loc),
"Default", loc);
Arguments arguments_equal = new Arguments (2);
arguments_equal.Add (new Argument (new MemberAccess (new This (f.Location), f.Name)));
arguments_equal.Add (new Argument (new MemberAccess (other_variable, f.Name)));
Expression field_equal = new Invocation (new MemberAccess (equality_comparer,
"Equals", loc), arguments_equal);
Arguments arguments_hashcode = new Arguments (1);
arguments_hashcode.Add (new Argument (new MemberAccess (new This (f.Location), f.Name)));
Expression field_hashcode = new Invocation (new MemberAccess (equality_comparer,
"GetHashCode", loc), arguments_hashcode);
IntConstant FNV_prime = new IntConstant (16777619, loc);
rs_hashcode = new Binary (Binary.Operator.Multiply,
new Binary (Binary.Operator.ExclusiveOr, rs_hashcode, field_hashcode),
FNV_prime);
Expression field_to_string = new Conditional (new Binary (Binary.Operator.Inequality,
new MemberAccess (new This (f.Location), f.Name), new NullLiteral (loc)),
new Invocation (new MemberAccess (
new MemberAccess (new This (f.Location), f.Name), "ToString"), null),
new StringConstant (string.Empty, loc));
if (rs_equals == null) {
rs_equals = field_equal;
string_concat = new Binary (Binary.Operator.Addition,
string_concat,
new Binary (Binary.Operator.Addition,
new StringConstant (" " + p.Name + " = ", loc),
field_to_string));
continue;
}
//
// Implementation of ToString () body using string concatenation
//
string_concat = new Binary (Binary.Operator.Addition,
new Binary (Binary.Operator.Addition,
string_concat,
new StringConstant (", " + p.Name + " = ", loc)),
field_to_string);
rs_equals = new Binary (Binary.Operator.LogicalAnd, rs_equals, field_equal);
}
string_concat = new Binary (Binary.Operator.Addition,
string_concat,
new StringConstant (" }", loc));
//
// Equals (object obj) override
//
LocalVariableReference other_variable_assign = new LocalVariableReference (equals_block, "other", loc);
equals_block.AddStatement (new StatementExpression (
new SimpleAssign (other_variable_assign,
new As (equals_block.GetParameterReference ("obj", loc),
current_type, loc), loc)));
Expression equals_test = new Binary (Binary.Operator.Inequality, other_variable, new NullLiteral (loc));
if (rs_equals != null)
equals_test = new Binary (Binary.Operator.LogicalAnd, equals_test, rs_equals);
equals_block.AddStatement (new Return (equals_test, loc));
equals.Block = equals_block;
equals.Define ();
AddMethod (equals);
//
// GetHashCode () override
//
Method hashcode = new Method (this, null, TypeManager.system_int32_expr,
Modifiers.PUBLIC | Modifiers.OVERRIDE | Modifiers.DEBUGGER_HIDDEN,
new MemberName ("GetHashCode", loc),
Mono.CSharp.ParametersCompiled.EmptyReadOnlyParameters, null);
//
// Modified FNV with good avalanche behavior and uniform
// distribution with larger hash sizes.
//
// const int FNV_prime = 16777619;
// int hash = (int) 2166136261;
// foreach (int d in data)
// hash = (hash ^ d) * FNV_prime;
// hash += hash << 13;
// hash ^= hash >> 7;
// hash += hash << 3;
// hash ^= hash >> 17;
// hash += hash << 5;
ToplevelBlock hashcode_top = new ToplevelBlock (Compiler, loc);
Block hashcode_block = new Block (hashcode_top);
hashcode_top.AddStatement (new Unchecked (hashcode_block));
hashcode_block.AddVariable (TypeManager.system_int32_expr, "hash", loc);
LocalVariableReference hash_variable = new LocalVariableReference (hashcode_block, "hash", loc);
LocalVariableReference hash_variable_assign = new LocalVariableReference (hashcode_block, "hash", loc);
hashcode_block.AddStatement (new StatementExpression (
new SimpleAssign (hash_variable_assign, rs_hashcode)));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.Addition, hash_variable,
new Binary (Binary.Operator.LeftShift, hash_variable, new IntConstant (13, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.ExclusiveOr, hash_variable,
new Binary (Binary.Operator.RightShift, hash_variable, new IntConstant (7, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.Addition, hash_variable,
new Binary (Binary.Operator.LeftShift, hash_variable, new IntConstant (3, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.ExclusiveOr, hash_variable,
new Binary (Binary.Operator.RightShift, hash_variable, new IntConstant (17, loc)))));
hashcode_block.AddStatement (new StatementExpression (
new CompoundAssign (Binary.Operator.Addition, hash_variable,
new Binary (Binary.Operator.LeftShift, hash_variable, new IntConstant (5, loc)))));
hashcode_block.AddStatement (new Return (hash_variable, loc));
hashcode.Block = hashcode_top;
hashcode.Define ();
AddMethod (hashcode);
//
// ToString () override
//
ToplevelBlock tostring_block = new ToplevelBlock (Compiler, loc);
tostring_block.AddStatement (new Return (string_concat, loc));
tostring.Block = tostring_block;
tostring.Define ();
AddMethod (tostring);
}
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);
ToplevelBlock new_block = new ToplevelBlock (Compiler, Block.StartLocation);
new_block.EndLocation = Block.EndLocation;
Block finaly_block = new ExplicitBlock (new_block, Location, Location);
Block try_block = new Block (new_block, block);
//
// 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))));
new_block.AddStatement (new TryFinally (try_block, finaly_block, Location));
block = new_block;
}
base.Emit ();
}
void Define_Current (bool is_generic)
{
MemberName left;
TypeExpr type;
if (is_generic) {
left = new MemberName (
"System.Collections.Generic.IEnumerator",
generic_args, Location);
type = iterator_type_expr;
} else {
left = new MemberName ("System.Collections.IEnumerator", Location);
type = TypeManager.system_object_expr;
}
MemberName name = new MemberName (left, "Current", Location);
ToplevelBlock get_block = new ToplevelBlock (Location);
get_block.AddStatement (new Return (new DynamicFieldExpr (CurrentField, Location), Location));
Accessor getter = new Accessor (get_block, 0, null, null, Location);
Property current = new Property (
this, type, Modifiers.DEBUGGER_HIDDEN, name, null, getter, null, false);
AddProperty (current);
}
protected override bool CheckBase ()
{
flags |= MethodAttributes.Virtual;
if (!base.CheckBase ())
return false;
if (Parent.PartialContainer.BaseCache == null)
return true;
Type base_type = Parent.PartialContainer.BaseCache.Container.Type;
if (base_type != null && Block != null) {
MethodGroupExpr method_expr = Expression.MethodLookup (Parent.Module.Compiler, Parent.TypeBuilder, base_type, MetadataName, Location);
if (method_expr == null)
throw new NotImplementedException ();
method_expr.IsBase = true;
method_expr.InstanceExpression = new CompilerGeneratedThis (Parent.TypeBuilder, Location);
ToplevelBlock new_block = new ToplevelBlock (Compiler, Block.StartLocation);
new_block.EndLocation = Block.EndLocation;
Block finaly_block = new ExplicitBlock (new_block, Location, Location);
Block try_block = new Block (new_block, block);
//
// 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))));
new_block.AddStatement (new TryFinally (try_block, finaly_block, Location));
block = new_block;
}
return true;
}
