+2001-10-29 Miguel de Icaza <miguel@ximian.com>
+
+ * cs-parser.jay: Add extra production for the second form of array
+ creation.
+
+ * expression.cs (ArrayCreation): Update to reflect the above
+ change.
+
+ * Small changes to prepare for Array initialization.
+
+2001-10-28 Miguel de Icaza <miguel@ximian.com>
+
+ * typemanager.cs (ImplementsInterface): interface might be null;
+ Deal with this problem;
+
+ Also, we do store negative hits on the cache (null values), so use
+ this instead of calling t.GetInterfaces on the type everytime.
+
+2001-10-28 Ravi Pratap <ravi@ximian.com>
+
+ * typemanager.cs (IsBuiltinType): New method to help determine the same.
+
+ * expression.cs (New::DoResolve): Get rid of array creation code and instead
+ split functionality out into different classes.
+
+ (New::FormArrayType): Move into NewBuiltinArray.
+
+ (Invocation::EmitArguments): Get rid of the MethodBase argument. Appears
+ quite useless.
+
+ (NewBuiltinArray): New class to handle creation of built-in arrays.
+
+ (NewBuiltinArray::DoResolve): Implement guts of array creation. Also take into
+ account creation of one-dimensional arrays.
+
+ (::Emit): Implement to use Newarr and Newobj opcodes accordingly.
+
+ (NewUserdefinedArray::DoResolve): Implement.
+
+ * cs-parser.jay (local_variable_type): Fix up to add the rank to the variable too.
+
+ * typemanager.cs (AddModule): Used to add a ModuleBuilder to the list of modules
+ we maintain inside the TypeManager. This is necessary to perform lookups on the
+ module builder.
+
+ (LookupType): Update to perform GetType on the module builders too.
+
+ * driver.cs (Driver): Add the ModuleBuilder to the list maintained by the TypeManager.
+
+ * exprssion.cs (NewUserdefinedArray::Emit): Implement.
+
+2001-10-23 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (New::DoResolve): Implement guts of array creation.
+
+ (New::FormLookupType): Rename to FormArrayType and modify ever so slightly.
+
+2001-10-27 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs: Fix bug I introduced lsat night that broke
+ Delegates.
+
+ (Expression.Resolve): Report a 246 error (can not resolve name)
+ if we find a SimpleName in the stream.
+
+ (Expression.ResolveLValue): Ditto.
+
+ (Expression.ResolveWithSimpleName): This function is a variant of
+ ResolveName, this one allows SimpleNames to be returned without a
+ warning. The only consumer of SimpleNames is MemberAccess
+
+2001-10-26 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (Invocation::DoResolve): Catch SimpleNames that
+ might arrive here. I have my doubts that this is correct.
+
+ * statement.cs (Lock): Implement lock statement.
+
+ * cs-parser.jay: Small fixes to support `lock' and `using'
+
+ * cs-tokenizer.cs: Remove extra space
+
+ * driver.cs: New flag --checked, allows to turn on integer math
+ checking.
+
+ * typemanger.cs: Load methodinfos for Threading.Monitor.Enter and
+ Threading.Monitor.Exit
+
+2001-10-23 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (IndexerAccess::DoResolveLValue): Set the
+ Expression Class to be IndexerAccess.
+
+ Notice that Indexer::DoResolve sets the eclass to Value.
+
+2001-10-22 Miguel de Icaza <miguel@ximian.com>
+
+ * class.cs (TypeContainer::Emit): Emit code for indexers.
+
+ * assign.cs (IAssignMethod): New interface implemented by Indexers
+ and Properties for handling assignment.
+
+ (Assign::Emit): Simplify and reuse code.
+
+ * expression.cs (IndexerAccess, PropertyExpr): Implement
+ IAssignMethod, clean up old code.
+
+2001-10-22 Ravi Pratap <ravi@ximian.com>
+
+ * typemanager.cs (ImplementsInterface): New method to determine if a type
+ implements a given interface. Provides a nice cache too.
+
+ * expression.cs (ImplicitReferenceConversion): Update checks to use the above
+ method.
+
+ (ConvertReferenceExplicit): Ditto.
+
+ * delegate.cs (Delegate::Populate): Update to define the parameters on the
+ various methods, with correct names etc.
+
+ * class.cs (Operator::OpType): New members Operator.UnaryPlus and
+ Operator.UnaryNegation.
+
+ * cs-parser.jay (operator_declarator): Be a little clever in the case where
+ we have a unary plus or minus operator.
+
+ * expression.cs (Unary): Rename memebers of Operator enum to UnaryPlus and
+ UnaryMinus.
+
+ * everywhere : update accordingly.
+
+ * everywhere : Change Negate and BitComplement to LogicalNot and OnesComplement
+ respectively.
+
+ * class.cs (Method::Define): For the case where we are implementing a method
+ inherited from an interface, we need to set the MethodAttributes.Final flag too.
+ Also set MethodAttributes.NewSlot and MethodAttributes.HideBySig.
+
+2001-10-21 Ravi Pratap <ravi@ximian.com>
+
+ * interface.cs (FindMembers): Implement to work around S.R.E
+ lameness.
+
+ * typemanager.cs (IsInterfaceType): Implement.
+
+ (FindMembers): Update to handle interface types too.
+
+ * expression.cs (ImplicitReferenceConversion): Re-write bits which
+ use IsAssignableFrom as that is not correct - it doesn't work.
+
+ * delegate.cs (DelegateInvocation): Derive from ExpressionStatement
+ and accordingly override EmitStatement.
+
+ * expression.cs (ConvertReferenceExplicit): Re-write similary, this time
+ using the correct logic :-)
+
+2001-10-19 Ravi Pratap <ravi@ximian.com>
+
+ * ../errors/cs-11.cs : Add to demonstrate error -11
+
+2001-10-17 Miguel de Icaza <miguel@ximian.com>
+
+ * assign.cs (Assign::Resolve): Resolve right hand side first, and
+ then pass this as a hint to ResolveLValue.
+
+ * expression.cs (FieldExpr): Add Location information
+
+ (FieldExpr::LValueResolve): Report assignment to readonly
+ variable.
+
+ (Expression::ExprClassFromMemberInfo): Pass location information.
+
+ (Expression::ResolveLValue): Add new method that resolves an
+ LValue.
+
+ (Expression::DoResolveLValue): Default invocation calls
+ DoResolve.
+
+ (Indexers): New class used to keep track of indexers in a given
+ Type.
+
+ (IStackStore): Renamed from LValue, as it did not really describe
+ what this did. Also ResolveLValue is gone from this interface and
+ now is part of Expression.
+
+ (ElementAccess): Depending on the element access type
+
+ * typemanager.cs: Add `indexer_name_type' as a Core type
+ (System.Runtime.CompilerServices.IndexerNameAttribute)
+
+ * statement.cs (Goto): Take a location.
+
+2001-10-18 Ravi Pratap <ravi@ximian.com>
+
+ * delegate.cs (Delegate::VerifyDelegate): New method to verify
+ if two delegates are compatible.
+
+ (NewDelegate::DoResolve): Update to take care of the case when
+ we instantiate a delegate from another delegate.
+
+ * typemanager.cs (FindMembers): Don't even try to look up members
+ of Delegate types for now.
+
+2001-10-18 Ravi Pratap <ravi@ximian.com>
+
+ * delegate.cs (NewDelegate): New class to take care of delegate
+ instantiation.
+
+ * expression.cs (New): Split the delegate related code out into
+ the NewDelegate class.
+
+ * delegate.cs (DelegateInvocation): New class to handle delegate
+ invocation.
+
+ * expression.cs (Invocation): Split out delegate related code into
+ the DelegateInvocation class.
+
+2001-10-17 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (New::DoResolve): Implement delegate creation fully
+ and according to the spec.
+
+ (New::DoEmit): Update to handle delegates differently.
+
+ (Invocation::FullMethodDesc): Fix major stupid bug thanks to me
+ because of which we were printing out arguments in reverse order !
+
+ * delegate.cs (VerifyMethod): Implement to check if the given method
+ matches the delegate.
+
+ (FullDelegateDesc): Implement.
+
+ (VerifyApplicability): Implement.
+
+ * expression.cs (Invocation::DoResolve): Update to accordingly handle
+ delegate invocations too.
+
+ (Invocation::Emit): Ditto.
+
+ * ../errors/cs1593.cs : Added.
+
+ * ../errors/cs1594.cs : Added.
+
+ * delegate.cs (InstanceExpression, TargetMethod): New properties.
+
+2001-10-16 Ravi Pratap <ravi@ximian.com>
+
+ * typemanager.cs (intptr_type): Core type for System.IntPtr
+
+ (InitCoreTypes): Update for the same.
+
+ (iasyncresult_type, asynccallback_type): Ditto.
+
+ * delegate.cs (Populate): Fix to use System.Intptr as it is indeed
+ correct.
+
+ * typemanager.cs (AddDelegateType): Store a pointer to the Delegate class
+ too.
+
+ * delegate.cs (ConstructorBuilder, InvokeBuilder, ...): New members to hold
+ the builders for the 4 members of a delegate type :-)
+
+ (Populate): Define the BeginInvoke and EndInvoke methods on the delegate
+ type.
+
+ * expression.cs (New::DoResolve): Implement guts for delegate creation.
+
+ * ../errors/errors.txt : Update for an error (-11) which only we catch :-)
+
+2001-10-15 Miguel de Icaza <miguel@ximian.com>
+
+ * statement.cs (Break::Emit): Implement.
+ (Continue::Emit): Implement.
+
+ (For::Emit): Track old being/end loops; Set Begin loop, ack end loop
+ (While::Emit): Track old being/end loops; Set Begin loop, ack end loop
+ (Do::Emit): Track old being/end loops; Set Begin loop, ack end loop
+ (Foreach::Emit): Track old being/end loops; Set Begin loop, ack
+ end loop
+
+ * codegen.cs (EmitContext::LoopEnd, EmitContext::LoopBegin): New
+ properties that track the label for the current loop (begin of the
+ loop and end of the loop).
+
+2001-10-15 Ravi Pratap <ravi@ximian.com>
+
+ * delegate.cs (Emit): Get rid of it as there doesn't seem to be any ostensible
+ use of emitting anything at all.
+
+ * class.cs, rootcontext.cs : Get rid of calls to the same.
+
+ * delegate.cs (DefineDelegate): Make sure the class we define is also sealed.
+
+ (Populate): Define the constructor correctly and set the implementation
+ attributes.
+
+ * typemanager.cs (delegate_types): New hashtable to hold delegates that
+ have been defined.
+
+ (AddDelegateType): Implement.
+
+ (IsDelegateType): Implement helper method.
+
+ * delegate.cs (DefineDelegate): Use AddDelegateType instead of AddUserType.
+
+ * expression.cs (New::DoResolve): Check if we are trying to instantiate a delegate type
+ and accordingly handle it.
+
+ * delegate.cs (Populate): Take TypeContainer argument.
+ Implement bits to define the Invoke method. However, I still haven't figured out
+ how to take care of the native int bit :-(
+
+ * cs-parser.jay (delegate_declaration): Fixed the bug that I had introduced :-)
+ Qualify the name of the delegate, not its return type !
+
+ * expression.cs (ImplicitReferenceConversion): Implement guts of implicit array
+ conversion.
+
+ (StandardConversionExists): Checking for array types turns out to be recursive.
+
+ (ConvertReferenceExplicit): Implement array conversion.
+
+ (ExplicitReferenceConversionExists): New method to determine precisely that :-)
+
+2001-10-12 Ravi Pratap <ravi@ximian.com>
+
+ * cs-parser.jay (delegate_declaration): Store the fully qualified
+ name as it is a type declaration.
+
+ * delegate.cs (ReturnType, Name): Rename members to these. Make them
+ readonly.
+
+ (DefineDelegate): Renamed from Define. Does the same thing essentially,
+ as TypeContainer::DefineType.
+
+ (Populate): Method in which all the definition of the various methods (Invoke)
+ etc is done.
+
+ (Emit): Emit any code, if necessary. I am not sure about this really, but let's
+ see.
+
+ (CloseDelegate): Finally creates the delegate.
+
+ * class.cs (TypeContainer::DefineType): Update to define delegates.
+ (Populate, Emit and CloseType): Do the same thing here too.
+
+ * rootcontext.cs (ResolveTree, PopulateTypes, EmitCode, CloseTypes): Include
+ delegates in all these operations.
+
+2001-10-14 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs: LocalTemporary: a new expression used to
+ reference a temporary that has been created.
+
+ * assign.cs: Handle PropertyAccess back here, so that we can
+ provide the proper semantic access to properties.
+
+ * expression.cs (Expression::ConvertReferenceExplicit): Implement
+ a few more explicit conversions.
+
+ * modifiers.cs: `NEW' modifier maps to HideBySig.
+
+ * expression.cs (PropertyExpr): Make this into an
+ ExpressionStatement, and support the EmitStatement code path.
+
+ Perform get/set error checking, clean up the interface.
+
+ * assign.cs: recognize PropertyExprs as targets, and if so, turn
+ them into toplevel access objects.
+
+2001-10-12 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs: PropertyExpr::PropertyExpr: use work around the
+ SRE.
+
+ * typemanager.cs: Keep track here of our PropertyBuilders again to
+ work around lameness in SRE.
+
+2001-10-11 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (LValue::LValueResolve): New method in the
+ interface, used to perform a second resolution pass for LValues.
+
+ (This::DoResolve): Catch the use of this in static methods.
+
+ (This::LValueResolve): Implement.
+
+ (This::Store): Remove warning, assigning to `this' in structures
+ is
+
+ (Invocation::Emit): Deal with invocation of
+ methods on value types. We need to pass the address to structure
+ methods rather than the object itself. (The equivalent code to
+ emit "this" for structures leaves the entire structure on the
+ stack instead of a pointer to it).
+
+ (ParameterReference::DoResolve): Compute the real index for the
+ argument based on whether the method takes or not a `this' pointer
+ (ie, the method is static).
+
+ * codegen.cs (EmitContext::GetTemporaryStorage): Used to store
+ value types returned from functions when we need to invoke a
+ method on the sturcture.
+
+
+2001-10-11 Ravi Pratap <ravi@ximian.com>
+
+ * class.cs (TypeContainer::DefineType): Method to actually do the business of
+ defining the type in the Modulebuilder or Typebuilder. This is to take
+ care of nested types which need to be defined on the TypeBuilder using
+ DefineNestedMethod.
+
+ (TypeContainer::GetClassBases): Implement. Essentially the code from the
+ methods in RootContext, only ported to be part of TypeContainer.
+
+ (TypeContainer::GetInterfaceOrClass): Ditto.
+
+ (TypeContainer::LookupInterfaceOrClass, ::MakeFQN): Ditto.
+
+ * interface.cs (Interface::DefineInterface): New method. Does exactly
+ what RootContext.CreateInterface did earlier, only it takes care of nested types
+ too.
+
+ (Interface::GetInterfaces): Move from RootContext here and port.
+
+ (Interface::GetInterfaceByName): Same here.
+
+ * rootcontext.cs (ResolveTree): Re-write.
+
+ (PopulateTypes): Re-write.
+
+ * class.cs (TypeContainer::Populate): Populate nested types too.
+ (TypeContainer::Emit): Emit nested members too.
+
+ * typemanager.cs (AddUserType): Do not make use of the FullName property,
+ instead just use the name argument passed in as it is already fully
+ qualified.
+
+ (FindMembers): Check in the Builders to TypeContainer mapping instead of the name
+ to TypeContainer mapping to see if a type is user-defined.
+
+ * class.cs (TypeContainer::CloseType): Implement.
+
+ (TypeContainer::DefineDefaultConstructor): Use Basename, not Name while creating
+ the default constructor.
+
+ (TypeContainer::Populate): Fix minor bug which led to creating default constructors
+ twice.
+
+ (Constructor::IsDefault): Fix up logic to determine if it is the default constructor
+
+ * interface.cs (CloseType): Create the type here.
+
+ * rootcontext.cs (CloseTypes): Re-write to recursively close types by running through
+ the hierarchy.
+
+ Remove all the methods which are now in TypeContainer.
+
+2001-10-10 Ravi Pratap <ravi@ximian.com>
+
+ * delegate.cs (Define): Re-write bits to define the delegate
+ correctly.
+
+2001-10-10 Miguel de Icaza <miguel@ximian.com>
+
+ * makefile: Renamed the compiler to `mcs.exe' instead of compiler.exe
+
+ * expression.cs (ImplicitReferenceConversion): handle null as well
+ as a source to convert to any reference type.
+
+ * statement.cs (Return): Perform any implicit conversions to
+ expected return type.
+
+ Validate use of return statement.
+
+ * codegen.cs (EmitContext): Pass the expected return type here.
+
+ * class.cs (Method, Constructor, Property): Pass expected return
+ type to EmitContext.
+
+2001-10-09 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs: Make DoResolve take an EmitContext instead of a
+ TypeContainer.
+
+ Replaced `l' and `location' for `loc', for consistency.
+
+ (Error, Warning): Remove unneeded Tc argument.
+
+ * assign.cs, literal.cs, constant.cs: Update to new calling
+ convention.
+
+ * codegen.cs: EmitContext now contains a flag indicating whether
+ code is being generated in a static method or not.
+
+ * cs-parser.jay: DecomposeQI, new function that replaces the old
+ QualifiedIdentifier. Now we always decompose the assembled
+ strings from qualified_identifier productions into a group of
+ memberaccesses.
+
+2001-10-08 Miguel de Icaza <miguel@ximian.com>
+
+ * rootcontext.cs: Deal with field-less struct types correctly now
+ by passing the size option to Define Type.
+
+ * class.cs: Removed hack that created one static field.
+
+2001-10-07 Miguel de Icaza <miguel@ximian.com>
+
+ * statement.cs: Moved most of the code generation here.
+
+2001-10-09 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (New::DoResolve): Revert changes for array creation, doesn't
+ seem very right.
+
+ (ElementAccess): Remove useless bits for now - keep checks as the spec
+ says.
+
+2001-10-08 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (ElementAccess::DoResolve): Remove my crap code
+ and start performing checks according to the spec.
+
+2001-10-07 Ravi Pratap <ravi@ximian.com>
+
+ * cs-parser.jay (type_suffix*): Remove - they are redundant. Use
+ rank_specifiers instead.
+
+ (rank_specifiers): Change the order in which the rank specifiers are stored
+
+ (local_variable_declaration): Use opt_rank_specifier instead of type_suffixes.
+
+ * expression.cs (ElementAccess): Implement the LValue interface too.
+
+2001-10-06 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (ConvertExplicitStandard): Add. Same as ConvertExplicit
+ except that user defined conversions are not included.
+
+ (UserDefinedConversion): Update to use the ConvertExplicitStandard to
+ perform the conversion of the return type, if necessary.
+
+ (New::DoResolve): Check whether we are creating an array or an object
+ and accordingly do the needful.
+
+ (New::Emit): Same here.
+
+ (New::DoResolve): Implement guts of array creation.
+
+ (New::FormLookupType): Helper function.
+
+2001-10-07 Miguel de Icaza <miguel@ximian.com>
+
+ * codegen.cs: Removed most of the code generation here, and move the
+ corresponding code generation bits to the statement classes.
+
+ Added support for try/catch/finalize and throw.
+
+ * cs-parser.jay: Added support for try/catch/finalize.
+
+ * class.cs: Catch static methods having the flags override,
+ virtual or abstract.
+
+ * expression.cs (UserCast): This user cast was not really doing
+ what it was supposed to do. Which is to be born in fully resolved
+ state. Parts of the resolution were being performed at Emit time!
+
+ Fixed this code.
+
+2001-10-05 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs: Implicity convert the result from UserCast.
+
+2001-10-05 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Expression::FindMostEncompassingType): Fix bug which
+ prevented it from working correctly.
+
+ (ConvertExplicit): Make the first try, a call to ConvertImplicitStandard, not
+ merely ConvertImplicit.
+
+2001-10-05 Miguel de Icaza <miguel@ximian.com>
+
+ * typemanager.cs: Make the LookupTypeContainer function static,
+ and not per-instance.
+
+ * class.cs: Make static FindMembers (the one that takes a Type
+ argument).
+
+ * codegen.cs: Add EmitForeach here.
+
+ * cs-parser.jay: Make foreach a toplevel object instead of the
+ inline expansion, as we need to perform semantic analysis on it.
+
+2001-10-05 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Expression::ImplicitUserConversion): Rename to
+ UserDefinedConversion.
+
+ (Expression::UserDefinedConversion): Take an extra argument specifying
+ whether we look for explicit user conversions too.
+
+ (Expression::ImplicitUserConversion): Make it a call to UserDefinedConversion.
+
+ (UserDefinedConversion): Incorporate support for user defined explicit conversions.
+
+ (ExplicitUserConversion): Make it a call to UserDefinedConversion
+ with the appropriate arguments.
+
+ * cs-parser.jay (cast_expression): Record location too.
+
+ * expression.cs (Cast): Record location info.
+
+ (Expression::ConvertExplicit): Take location argument.
+
+ (UserImplicitCast): Change name to UserCast. Take an extra constructor argument
+ to determine if we are doing explicit conversions.
+
+ (UserCast::Emit): Update accordingly.
+
+ (Expression::ConvertExplicit): Report an error if everything fails.
+
+ * ../errors/cs0030.cs : Add.
+
+2001-10-04 Miguel de Icaza <miguel@ximian.com>
+
+ * modifiers.cs: If the ABSTRACT keyword is present, also set the
+ virtual and newslot bits.
+
+ * class.cs (TypeContainer::RegisterRequiredImplementations):
+ Record methods we need.
+
+ (TypeContainer::MakeKey): Helper function to make keys for
+ MethodBases, since the Methodbase key is useless.
+
+ (TypeContainer::Populate): Call RegisterRequiredImplementations
+ before defining the methods.
+
+ Create a mapping for method_builders_to_methods ahead of time
+ instead of inside a tight loop.
+
+ (::RequireMethods): Accept an object as the data to set into the
+ hashtable so we can report interface vs abstract method mismatch.
+
+2001-10-03 Miguel de Icaza <miguel@ximian.com>
+
+ * report.cs: Make all of it static.
+
+ * rootcontext.cs: Drop object_type and value_type computations, as
+ we have those in the TypeManager anyways.
+
+ Drop report instance variable too, now it is a global.
+
+ * driver.cs: Use try/catch on command line handling.
+
+ Add --probe option to debug the error reporting system with a test
+ suite.
+
+ * report.cs: Add support for exiting program when a probe
+ condition is reached.
+
+2001-10-03 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Binary::DoNumericPromotions): Fix the case when
+ we do a forcible conversion regardless of type, to check if
+ ForceConversion returns a null.
+
+ (Binary::error19): Use location to report error.
+
+ (Unary::error23): Use location here too.
+
+ * ../errors/cs0019.cs : Check in.
+
+ * ../errors/cs0023.cs : Check in.
+
+ * expression.cs (Expression.MemberLookup): Return null for a rather esoteric
+ case of a non-null MethodInfo object with a length of 0 !
+
+ (Binary::ResolveOperator): Flag error if overload resolution fails to find
+ an applicable member - according to the spec :-)
+ Also fix logic to find members in base types.
+
+ (Unary::ResolveOperator): Same here.
+
+ (Unary::report23): Change name to error23 and make first argument a TypeContainer
+ as I was getting thoroughly confused between this and error19 :-)
+
+ * expression.cs (Expression::ImplicitUserConversion): Re-write fully
+ (::FindMostEncompassedType): Implement.
+ (::FindMostEncompassingType): Implement.
+ (::StandardConversionExists): Implement.
+
+ (UserImplicitCast): Re-vamp. We now need info about most specific
+ source and target types so that we can do the necessary conversions.
+
+ (Invocation::MakeUnionSet): Completely re-write to make sure we form a proper
+ mathematical union with no duplicates.
+
+2001-10-03 Miguel de Icaza <miguel@ximian.com>
+
+ * rootcontext.cs (RootContext::PopulateTypes): Populate containers
+ in order from base classes to child classes, so that we can in
+ child classes look up in our parent for method names and
+ attributes (required for handling abstract, virtual, new, override
+ constructs: we need to instrospect our base class, and if we dont
+ populate the classes in order, the introspection might be
+ incorrect. For example, a method could query its parent before
+ the parent has any methods and would determine that the parent has
+ no abstract methods (while it could have had them)).
+
+ (RootContext::CreateType): Record the order in which we define the
+ classes.
+
+2001-10-02 Miguel de Icaza <miguel@ximian.com>
+
+ * class.cs (TypeContainer::Populate): Also method definitions can
+ fail now, keep track of this.
+
+ (TypeContainer::FindMembers): Implement support for
+ DeclaredOnly/noDeclaredOnly flag.
+
+ (Constructor::Emit) Return the ConstructorBuilder.
+
+ (Method::Emit) Return the MethodBuilder.
+ Check for abstract or virtual methods to be public.
+
+ * rootcontext.cs (RootContext::CreateType): Register all the
+ abstract methods required for the class to be complete and the
+ interface methods that must be implemented.
+
+ * cs-parser.jay: Report error 501 (method requires body if it is
+ not marked abstract or extern).
+
+ * expression.cs (TypeOf::Emit): Implement.
+
+ * typemanager.cs: runtime_handle_type, new global type.
+
+ * class.cs (Property::Emit): Generate code for properties.
+
+2001-10-02 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Unary::ResolveOperator): Find operators on base type
+ too - we now conform exactly to the spec.
+
+ (Binary::ResolveOperator): Same here.
+
+ * class.cs (Operator::Define): Fix minor quirk in the tests.
+
+ * ../errors/cs0215.cs : Added.
+
+ * ../errors/cs0556.cs : Added.
+
+ * ../errors/cs0555.cs : Added.
+
+2001-10-01 Miguel de Icaza <miguel@ximian.com>
+
+ * cs-tokenizer.cs: Reimplemented Location to be a struct with a
+ single integer which is really efficient
+
+2001-10-01 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Expression::ImplicitUserConversion): Use location
+ even in the case when we are examining True operators.
+
+ * class.cs (Operator::Define): Perform extensive checks to conform
+ with the rules for operator overloading in the spec.
+
+ * expression.cs (Expression::ImplicitReferenceConversion): Implement
+ some of the other conversions mentioned in the spec.
+
+ * typemanager.cs (array_type): New static member for the System.Array built-in
+ type.
+
+ (cloneable_interface): For System.ICloneable interface.
+
+ * driver.cs (Driver::Driver): Initialize TypeManager's core types even before
+ we start resolving the tree and populating types.
+
+ * ../errors/errors.txt : Update for error numbers -7, -8, -9, -10
+
+2001-10-01 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (Expression::ExprClassFromMemberInfo,
+ Expression::Literalize): Create literal expressions from
+ FieldInfos which are literals.
+
+ (ConvertNumericExplicit, ImplicitNumericConversion): Fix a few
+ type casts, because they were wrong. The test suite in tests
+ caught these ones.
+
+ (ImplicitNumericConversion): ushort to ulong requires a widening
+ cast.
+
+ Int32 constant to long requires widening cast as well.
+
+ * literal.cs (LongLiteral::EmitLong): Do not generate i4 constants
+ for integers because the type on the stack is not i4.
+
+2001-09-30 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (report118): require location argument.
+
+ * parameter.cs: Do not dereference potential null value.
+
+ * class.cs: Catch methods that lack the `new' keyword when
+ overriding a name. Report warnings when `new' is used without
+ anything being there to override.
+
+ * modifiers.cs: Handle `NEW' as MethodAttributes.NewSlot.
+
+ * class.cs: Only add constructor to hashtable if it is non-null
+ (as now constructors can fail on define).
+
+ (TypeManager, Class, Struct): Take location arguments.
+
+ Catch field instance initialization in structs as errors.
+
+ accepting_filter: a new filter for FindMembers that is static so
+ that we dont create an instance per invocation.
+
+ (Constructor::Define): Catch errors where a struct constructor is
+ parameterless
+
+ * cs-parser.jay: Pass location information for various new
+ constructs.
+
+ * delegate.cs (Delegate): take a location argument.
+
+ * driver.cs: Do not call EmitCode if there were problesm in the
+ Definition of the types, as many Builders wont be there.
+
+ * decl.cs (Decl::Decl): Require a location argument.
+
+ * cs-tokenizer.cs: Handle properly hex constants that can not fit
+ into integers, and find the most appropiate integer for it.
+
+ * literal.cs: Implement ULongLiteral.
+
+ * rootcontext.cs: Provide better information about the location of
+ failure when CreateType fails.
+
+2001-09-29 Miguel de Icaza <miguel@ximian.com>
+
+ * rootcontext.cs (RootContext::PopulateTypes): Populates structs
+ as well.
+
+ * expression.cs (Binary::CheckShiftArguments): Add missing type
+ computation.
+ (Binary::ResolveOperator): Add type to the logical and and logical
+ or, Bitwise And/Or and Exclusive Or code paths, it was missing
+ before.
+
+ (Binary::DoNumericPromotions): In the case where either argument
+ is ulong (and most signed types combined with ulong cause an
+ error) perform implicit integer constant conversions as well.
+
+2001-09-28 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (UserImplicitCast): Method should always be
+ non-null.
+ (Invocation::BetterConversion): Simplified test for IntLiteral.
+
+ (Expression::ImplicitNumericConversion): Split this routine out.
+ Put the code that performs implicit constant integer conversions
+ here.
+
+ (Expression::Resolve): Become a wrapper around DoResolve so we can
+ check eclass and type being set after resolve.
+
+ (Invocation::Badness): Remove this dead function
+
+ (Binary::ResolveOperator): Do not compute the expensive argumnets
+ unless we have a union for it.
+
+ (Probe::Emit): Is needs to do an isinst and then
+ compare against null.
+
+ (::CanConvert): Added Location argument. If the Location argument
+ is null (Location.Null), then we do not report errors. This is
+ used by the `probe' mechanism of the Explicit conversion. We do
+ not want to generate an error for something that the user
+ explicitly requested to be casted. But the pipeline for an
+ explicit cast first tests for potential implicit casts.
+
+ So for now, if the Location is null, it means `Probe only' to
+ avoid adding another argument. Might have to revise this
+ strategy later.
+
+ (ClassCast): New class used to type cast objects into arbitrary
+ classes (used in Explicit Reference Conversions).
+
+ Implement `as' as well.
+
+ Reverted all the patches from Ravi below: they were broken:
+
+ * The use of `level' as a mechanism to stop recursive
+ invocations is wrong. That was there just to catch the
+ bug with a strack trace but not as a way of addressing
+ the problem.
+
+ To fix the problem we have to *understand* what is going
+ on and the interactions and come up with a plan, not
+ just get things going.
+
+ * The use of the type conversion cache that I proposed
+ last night had an open topic: How does this work across
+ protection domains. A user defined conversion might not
+ be public in the location where we are applying the
+ conversion, a different conversion might be selected
+ (ie, private A->B (better) but public B->A (worse),
+ inside A, A->B applies, but outside it, B->A will
+ apply).
+
+ * On top of that (ie, even if the above is solved),
+ conversions in a cache need to be abstract. Ie, `To
+ convert from an Int to a Short use an OpcodeCast', not
+ `To convert from an Int to a Short use the OpcodeCast on
+ the variable 5' (which is what this patch was doing).
+
+2001-09-28 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Invocation::ConversionExists): Re-write to use
+ the conversion cache
+
+ (Expression::ConvertImplicit): Automatic bailing out if level != 0. Also
+ cache all conversions done, not just user-defined ones.
+
+ (Invocation::BetterConversion): The real culprit. Use ConversionExists
+ to determine if a conversion exists instead of acutually trying to
+ perform the conversion. It's faster too.
+
+ (Expression::ConvertExplicit): Modify to use ConversionExists to check
+ and only then attempt the implicit conversion.
+
+2001-09-28 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (ConvertImplicit): Use a cache for conversions
+ already found. Check level of recursion and bail out if necessary.
+
+2001-09-28 Miguel de Icaza <miguel@ximian.com>
+
+ * typemanager.cs (string_concat_string_string, string_concat_object_object):
+ Export standard methods that we expect for string operations.
+
+ * statement.cs (Block::UsageWarning): Track usage of variables and
+ report the errors for not used variables.
+
+ * expression.cs (Conditional::Resolve, ::Emit): Implement ?:
+ operator.
+
+2001-09-27 Miguel de Icaza <miguel@ximian.com>
+
+ * codegen.cs: remove unnneded code
+
+ * expression.cs: Removed BuiltinTypeAccess class
+
+ Fix the order in which implicit conversions are
+ done.
+
+ The previous fixed dropped support for boxed conversions (adding a
+ test to the test suite now)
+
+ (UserImplicitCast::CanConvert): Remove test for source being null,
+ that code is broken. We should not feed a null to begin with, if
+ we do, then we should track the bug where the problem originates
+ and not try to cover it up here.
+
+ Return a resolved expression of type UserImplicitCast on success
+ rather than true/false. Ravi: this is what I was talking about,
+ the pattern is to use a static method as a "constructor" for
+ objects.
+
+ Also, do not create arguments until the very last minute,
+ otherwise we always create the arguments even for lookups that
+ will never be performed.
+
+ (UserImplicitCast::Resolve): Eliminate, objects of type
+ UserImplicitCast are born in a fully resolved state.
+
+ * typemanager.cs (InitCoreTypes): Init also value_type
+ (System.ValueType).
+
+ * expression.cs (Cast::Resolve): First resolve the child expression.
+
+ (LValue): Add new method AddressOf to be used by
+ the `&' operator.
+
+ Change the argument of Store to take an EmitContext instead of an
+ ILGenerator, because things like FieldExpr need to be able to call
+ their children expression to generate the instance code.
+
+ (Expression::Error, Expression::Warning): Sugar functions for
+ reporting errors.
+
+ (Expression::MemberLookup): Accept a TypeContainer instead of a
+ Report as the first argument.
+
+ (Expression::ResolvePrimary): Killed. I still want to improve
+ this as currently the code is just not right.
+
+ (Expression::ResolveMemberAccess): Simplify, but it is still
+ wrong.
+
+ (Unary::Resolve): Catch errors in AddressOf operators.
+
+ (LocalVariableReference::Emit, ::Store, ::AddressOf): typecast
+ index to a byte for the short-version, or the compiler will choose
+ the wrong Emit call, which generates the wrong data.
+
+ (ParameterReference::Emit, ::Store): same.
+
+ (FieldExpr::AddressOf): Implement.
+
+ * typemanager.cs: TypeManager: made public variable instead of
+ property.
+
+ * driver.cs: document --fatal.
+
+ * report.cs (ErrorMessage, WarningMessage): new names for the old
+ Error and Warning classes.
+
+ * cs-parser.jay (member_access): Turn built-in access to types
+ into a normal simplename
+
+2001-09-27 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Invocation::BetterConversion): Fix to cope
+ with q being null, since this was introducing a bug.
+
+ * expression.cs (ConvertImplicit): Do built-in conversions first.
+
+2001-09-27 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (UserImplicitCast::Resolve): Fix bug.
+
+2001-09-27 Ravi Pratap <ravi@ximian.com>
+
+ * class.cs (TypeContainer::AddConstructor): Fix a stupid bug
+ I had introduced long ago (what's new ?).
+
+ * expression.cs (UserImplicitCast::CanConvert): Static method to do
+ the work of all the checking.
+ (ConvertImplicit): Call CanConvert and only then create object if necessary.
+ (UserImplicitCast::CanConvert, ::Resolve): Re-write.
+
+ (Unary::Operator): Rename Add and Subtract to Addition and Subtraction because
+ that is the right way.
+
+ (Invocation::MakeUnionSet): Convenience function to make unions of sets for
+ overloading resolution. Use everywhere instead of cutting and pasting code.
+
+ (Binary::ResolveOperator): Use MakeUnionSet.
+
+ (UserImplicitCast::CanConvert, ::Resolve): Update to take care of the case when
+ we have to convert to bool types. Not complete yet.
+
+2001-09-27 Miguel de Icaza <miguel@ximian.com>
+
+ * typemanager.cs (TypeManager::CSharpName): support ushort.
+
+ * expression.cs (Expression::TryImplicitIntConversion): Attempts
+ to provide an expression that performsn an implicit constant int
+ conversion (section 6.1.6).
+ (Expression::ConvertImplicitRequired): Reworked to include
+ implicit constant expression conversions.
+
+ (Expression::ConvertNumericExplicit): Finished.
+
+ (Invocation::Emit): If InstanceExpression is null, then it means
+ that we perform a call on this.
+
+2001-09-26 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (Unary::Emit): Remove some dead code.
+ (Probe): Implement Resolve and Emit for `is'.
+ (Expression::ConvertImplicitRequired): Attempt to do constant
+ expression conversions here. Maybe should be moved to
+ ConvertImplicit, but I am not sure.
+ (Expression::ImplicitLongConstantConversionPossible,
+ Expression::ImplicitIntConstantConversionPossible): New functions
+ that tell whether is it possible to apply an implicit constant
+ expression conversion.
+
+ (ConvertNumericExplicit): Started work on explicit numeric
+ conversions.
+
+ * cs-parser.jay: Update operator constants.
+
+ * parameter.cs (Parameters::GetParameterInfo): Hook up VerifyArgs
+ (Parameters::GetSignature): Hook up VerifyArgs here.
+ (Parameters::VerifyArgs): Verifies that no two arguments have the
+ same name.
+
+ * class.cs (Operator): Update the operator names to reflect the
+ ones that the spec expects (as we are just stringizing the
+ operator names).
+
+ * expression.cs (Unary::ResolveOperator): Fix bug: Use
+ MethodInfo's ReturnType instead of LookupMethodByBuilder as the
+ previous usage did only work for our methods.
+ (Expression::ConvertImplicit): Handle decimal implicit numeric
+ conversions as well.
+ (Expression::InternalTypeConstructor): Used to invoke constructors
+ on internal types for default promotions.
+
+ (Unary::Emit): Implement special handling for the pre/post
+ increment/decrement for overloaded operators, as they need to have
+ the same semantics as the other operators.
+
+ (Binary::ResolveOperator): ditto.
+ (Invocation::ConversionExists): ditto.
+ (UserImplicitCast::Resolve): ditto.
+
+2001-09-26 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Unary::Emit and Binary::Emit): If we have an overloaded
+ operator, return after emitting body. Regression tests pass again !
+
+ * expression.cs (ConvertImplicit): Take TypeContainer as first argument
+ (Unary::ForceConversion, Binary::ForceConversion): Ditto.
+ (Invocation::OverloadResolve): Ditto.
+ (Invocation::BetterFunction, BetterConversion, ConversionExists): Ditto.
+
+ * everywhere : update calls to the above methods accordingly.
+
+2001-09-26 Miguel de Icaza <miguel@ximian.com>
+
+ * assign.cs (Assign): Make it inherit from ExpressionStatement.
+
+ * expression.cs (ExpressionStatement): New base class used for
+ expressions that can appear in statements, so that we can provide
+ an alternate path to generate expression that do not leave a value
+ on the stack.
+
+ (Expression::Emit, and all the derivatives): We no longer return
+ whether a value is left on the stack or not. Every expression
+ after being emitted leaves a single value on the stack.
+
+ * codegen.cs (EmitContext::EmitStatementExpression): Use the
+ facilties of ExpressionStatement if possible.
+
+ * cs-parser.jay: Update statement_expression.
+
+2001-09-25 Miguel de Icaza <miguel@ximian.com>
+
+ * driver.cs: Change the wording of message
+
+2001-09-25 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Binary::ResolveOperator): Had forgottten to set
+ the type of the expression to the return type of the method if
+ we have an overloaded operator match ! The regression tests pass again !
+ (Unary::ResolveOperator): Ditto.
+
+ * expression.cs (Invocation::ConversionExists): Correct the member lookup
+ to find "op_Implicit", not "implicit" ;-)
+ (UserImplicitCast): New class to take care of user-defined implicit conversions.
+ (ConvertImplicit, ForceConversion): Take TypeContainer argument
+
+ * everywhere : Correct calls to the above accordingly.
+
+ * expression.cs (UserImplicitCast::Resolve, ::Emit): Implement.
+ (ConvertImplicit): Do user-defined conversion if it exists.
+
+2001-09-24 Miguel de Icaza <miguel@ximian.com>
+
+ * assign.cs: track location.
+ (Resolve): Use implicit conversions on assignment.
+
+ * literal.cs: Oops. Not good, Emit of short access values should
+ pass (Bytes) or the wrong argument will be selected.
+
+ * expression.cs (Unary::Emit): Emit code for -expr.
+
+ (Unary::ResolveOperator): Handle `Substract' for non-constants
+ (substract from zero from the non-constants).
+ Deal with Doubles as well.
+
+ (Expression::ConvertImplicitRequired): New routine that reports an
+ error if no implicit conversion exists.
+
+ (Invocation::OverloadResolve): Store the converted implicit
+ expressions if we make them
+
+2001-09-24 Ravi Pratap <ravi@ximian.com>
+
+ * class.cs (ConstructorInitializer): Take a Location argument.
+ (ConstructorBaseInitializer): Same here.
+ (ConstructorThisInitializer): Same here.
+
+ * cs-parser.jay : Update all calls accordingly.
+
+ * expression.cs (Unary, Binary, New): Take location argument.
+ Update accordingly everywhere.
+
+ * cs-parser.jay : Update all calls to the above to take a location
+ argument.
+
+ * class.cs : Ditto.
+
+2001-09-24 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Invocation::BetterFunction): Take TypeContainer argument
+ (Invocation::BetterConversion): Same here
+ (Invocation::ConversionExists): Ditto.
+
+ (Invocation::ConversionExists): Implement.
+
+2001-09-22 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (OverloadResolve): Improve some more to catch errors 1502 and 1503
+ Also take an additional TypeContainer argument.
+
+ * All over : Pass in TypeContainer as argument to OverloadResolve.
+
+ * typemanager.cs (CSharpName): Update to check for the string type and return
+ that too.
+
+ * expression.cs (Invocation::FullMethodDesc): New static method to return a string fully describing
+ a given method.
+
+2001-09-21 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Invocation::OverloadResolve): Re-write to conform more to the spec.
+ (Invocation::BetterFunction): Implement.
+ (Invocation::BetterConversion): Implement.
+ (Invocation::ConversionExists): Skeleton, no implementation yet.
+
+ Okay, things work fine !
+
+2001-09-21 Miguel de Icaza <miguel@ximian.com>
+
+ * typemanager.cs: declare and load enum_type, delegate_type and
+ void_type.
+
+ * expression.cs (Expression::Emit): Now emit returns a value that
+ tells whether a value is left on the stack or not. This strategy
+ might be reveted tomorrow with a mechanism that would address
+ multiple assignments.
+ (Expression::report118): Utility routine to report mismatches on
+ the ExprClass.
+
+ (Unary::Report23): Report impossible type/operator combination
+ utility function.
+
+ (Unary::IsIncrementableNumber): Whether the type can be
+ incremented or decremented with add.
+ (Unary::ResolveOperator): Also allow enumerations to be bitwise
+ complemented.
+ (Unary::ResolveOperator): Implement ++, !, ~, ++ and --.
+
+ (Invocation::Emit): Deal with new Emit convetion.
+
+ * All Expression derivatives: Updated their Emit method to return
+ whether they leave values on the stack or not.
+
+ * codegen.cs (CodeGen::EmitStatement): Pop values left on the
+ stack for expressions that are statements.
+
+2001-09-20 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (LValue): New interface. Must be implemented by
+ LValue objects.
+ (LocalVariableReference, ParameterReference, FieldExpr): Implement
+ LValue interface.
+
+ * assign.cs (Assign::Emit, Assign::Resolve): Use new LValue
+ interface for generating code, simplifies the code.
+
+2001-09-20 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (everywhere): Comment out return statements in ::Resolve
+ methods to avoid the warnings.
+
+2001-09-20 Miguel de Icaza <miguel@ximian.com>
+
+ * driver.cs (parse): Report error 2001 if we can not open the
+ source file.
+
+ * expression.cs (SimpleName::ResolveSimpleName): Error if we can
+ not resolve it.
+
+ * cs-parser.jay (QualifierIdentifier): Pass location to SimpleName
+ object.
+
+ * statement.cs (Block::EmitMeta): Reuse the count across all the variables,
+ otherwise nested blocks end up with the same index.
+
+ * codegen.cs (CodeGen::EmitTopBlock): Pass initial sequence
+
+ * expression.cs: Instead of having FIXMEs in the Resolve
+ functions, throw exceptions so it is obvious that we are facing a
+ bug.
+
+ * cs-parser.jay (invocation_expression): Pass Location information.
+
+ * codegen.cs (CodeGen::Save, CodeGen::CodeGen, CodeGen::Basename):
+ Use a basename for those routines because .NET does not like paths
+ on them.
+
+ * class.cs (TypeContainer::AddMethod): Do not call DefineName if the name was
+ already defined.
+
+2001-09-19 Miguel de Icaza <miguel@ximian.com>
+
+ * typemanager.cs (TypeManager::CoreLookupType): A function to make sure that we
+ are loading the correct data types (throws an exception if not).
+ (TypeManager::InitCoreTypes): Use CoreLookupType
+
+ * expression.cs (Unary::ResolveOperator): return the child
+ expression for expressions which are just +expr.
+ (Unary::ResolveOperator): Return negative literals for -LITERAL
+ expressions (otherwise they are Unary {Literal}).
+ (Invocation::Badness): Take into account `Implicit constant
+ expression conversions'.
+
+ * literal.cs (LongLiteral): Implement long literal class.
+ (IntLiteral): export the `Value' of the intliteral.
+
+2001-09-19 Ravi Pratap <ravi@ximian.com>
+
+ * expression.cs (Binary::Emit): Finally get the emission right ! Woo!
+
+ * class.cs (Operator::Define): Change the methodname prefix to 'op_'
+ instead of 'Operator'
+
+ * expression.cs (Binary::ResolveOperator): Update accordingly.
+ (Unary::Operator): Change names to 'Add' and 'Subtract' instead 'Plus'
+ and 'Minus'
+
+ * cs-parser.jay (unary_expression): Update to use the new names.
+
+ * gen-treedump.cs (GetUnary): Same here.
+
+ * expression.cs (Unary::Resolve): Implement.
+ (Binary::ResolveOperator): Re-write bits to quietly continue if no overloaded
+ operators are found instead of making noise ;-)
+ (Unary::ResolveOperator): New method to do precisely the same thing which
+ Binary::ResolveOperator does for Binary expressions.
+ (Unary.method, .Arguments): Add.
+ (Unary::OperName): Implement.
+ (Unary::ForceConversion): Copy and Paste !
+
+ * class.cs (Operator::Define): Fix a small bug for the case when we have
+ a unary operator.
+
+ * expression.cs (Unary::Emit): Implement. Need to find the right Opcodes
+ for the inbuilt operators. Only overloading works for now ;-)
+
+2001-09-18 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (CheckedExpr::Resolve, CheckedExpr::Emit,
+ UnCheckedExpr::Resolve, UnCheckedExpr::Emit): Implement.
+
+ * expression.cs (This::Emit): Implement.
+ (This::Resolve): Implement.
+ (TypeOf:Resolve): Implement.
+ (Expression::ResolveSimpleName): Add an implicit this to instance
+ field references.
+ (MemberAccess::Resolve): Deal with Parameters and Fields.
+ Bind instance variable to Field expressions.
+ (FieldExpr::Instance): New field used to track the expression that
+ represents the object instance.
+ (FieldExpr::Resolve): Track potential errors from MemberLookup not
+ binding
+ (FieldExpr::Emit): Implement.
+
+ * codegen.cs (EmitIf, EmitStatement, EmitBlock): Propagate whether
+ the last instruction contains a return opcode to avoid generating
+ the last `ret' instruction (this generates correct code, and it is
+ nice to pass the peverify output).
+
+ * class.cs (TypeContainer::EmitFieldInitializers): Implement field
+ initializer for static and instance variables.
+ (Constructor::Emit): Allow initializer to be null in the case of
+ static constructors. Only emit initializer for instance
+ constructors.
+
+ (TypeContainer::FindMembers): Return a null array if there are no
+ matches.
+
+ Also fix the code for the MemberTypes.Method branch, as it was not
+ scanning that for operators (or tried to access null variables before).
+
+ * assign.cs (Assign::Emit): Handle instance and static fields.
+
+ * TODO: Updated.
+
+ * driver.cs: Stop compilation if there are parse errors.
+
+ * cs-parser.jay (constructor_declaration): Provide default base
+ initializer for non-static constructors.
+ (constructor_declarator): Do not provide a default base
+ initializers if none was specified.
+ Catch the fact that constructors should not have parameters.
+
+ * class.cs: Do not emit parent class initializers for static
+ constructors, that should be flagged as an error.
+
+2001-09-18 Ravi Pratap <ravi@ximian.com>
+
+ * class.cs (RegisterMethodBuilder): Remove : it's unnecessary.
+ Move back code into TypeContainer::Populate.
+
+2001-09-18 Ravi Pratap <ravi@ximian.com>
+
+ * class.cs (TypeContainer::AddConstructor): Fix the check to
+ compare against Name, not Basename.
+ (Operator::OpType): Change Plus and Minus to Add and Subtract.
+
+ * cs-parser.jay : Update accordingly.
+
+ * class.cs (TypeContainer::FindMembers): For the case where we are searching
+ for methods, don't forget to look into the operators too.
+ (RegisterMethodBuilder): Helper method to take care of this for
+ methods, constructors and operators.
+ (Operator::Define): Completely revamp.
+ (Operator.OperatorMethod, MethodName): New fields.
+ (TypeContainer::Populate): Move the registering of builders into
+ RegisterMethodBuilder.
+ (Operator::Emit): Re-write.
+
+ * expression.cs (Binary::Emit): Comment out code path to emit method
+ invocation stuff for the case when we have a user defined operator. I am
+ just not able to get it right !
+
+2001-09-17 Miguel de Icaza <miguel@ximian.com>
+
+ * expression.cs (Expression::OverloadResolve): Drop TypeContainer
+ argument.
+
+ (Expression::MemberLookup): Provide a version that allows to
+ specify the MemberTypes and BindingFlags.
+
+ * statement.cs (Block::GetVariableInfo): Forgot to recurse here,
+ so it was not fetching variable information from outer blocks.
+
+ * modifiers.cs: (Modifiers::TypeAttr): Invert condition on
+ Beforefieldinit as it was buggy.
+
+ * rootcontext.cs (::LookupInterfaceOrClass): Removed an Error -200
+ that Ravi put here.
+
+ * class.cs (Constructor::Emit): Only emit if block is not null.
+ (TypeContainer::EmitDefaultConstructor): Removed routine, now we
+ deal with this by semantically definining it as if the user had
+ done it.
+
+ (TypeContainer::FindMembers): Removed ad-hoc hack to deal with
+ constructors as we now "emit" them at a higher level.
+
+ (TypeContainer::DefineDefaultConstructor): Used to define the
+ default constructors if none was provided.
+
+ (ConstructorInitializer): Add methods Resolve and Emit.
+
+ * expression.cs: Cast to ConstructorInfo instead of MethodInfo
+
+2001-09-17 Ravi Pratap <ravi@ximian.com>
+
+ * class.cs (TypeContainer::EmitDefaultConstructor): Register
+ the default constructor builder with our hashtable for methodbuilders
+ to methodcores.
+
+ * expression.cs (Invocation::OverloadResolve): Add a check for pd == null
+ and argument_count is 0 in which case we have a match.
+ (Binary::ResolveOperator): More null checking and miscellaneous coding
+ style cleanup.
+
+2001-09-17 Ravi Pratap <ravi@ximian.com>
+
+ * rootcontext.cs (IsNameSpace): Compare against null.
+
+ * everywhere : Correct spelling to 'Greater' and to 'Subtract'
+
+ * class.cs (Operator::OpType): Change names to match the ones in Binary::Operator
+ and Unary::Operator.
+
+ * cs-parser.jay (operator_declaration, CheckBinaryOperator, CheckUnaryOperator): Update
+ accordingly.
+
+ * expression.cs (Binary::method): New member to hold the MethodBase for the case when
+ we have overloaded operators.
+ (Binary::ResolveOperator): Implement the part which does the operator overload
+ resolution.
+
+ * class.cs (Operator::Emit): Implement.
+ (TypeContainer::Emit): Emit the operators we have too.
+
+ * expression.cs (Binary::Emit): Update to emit the appropriate code for
+ the case when we have a user-defined operator.
+
+2001-09-17 Miguel de Icaza <miguel@ximian.com>
+
+ * rootcontext.cs: Fix bug: tree.Namespaces might be null.
+
+2001-09-16 Ravi Pratap <ravi@ximian.com>
+
+ * class.cs (EmitStaticFieldInitializers, EmitFieldInitializers): Make public.
+ (TypeContainer::EmitConstructor): Remove and move code into Contructor::Emit.
+ (Constructor::Emit): Implement.
+ (EmitStaticFieldInitializers, EmitFieldInitializers): Ensure we return immediately
+ if we have no work to do.
+ (TypeContainer::Emit): Pass in TypeContainer as argument to the constructor's
+ Emit method.
+
+ * interface.cs (Interface::InterfaceAttr): Re-write to be more correct and complete.
+ (Interface::IsTopLevel): Add. Same as TypeContainer::IsTopLevel.
+
+ * class.cs (TypeContainer::IsTopLevel): Modify to use parent.Parent instead
+ of parent.parent.
+
+2001-09-15 Ravi Pratap <ravi@ximian.com>
+
+ * tree.cs (Tree::namespaces): New hashtable to keep track of namespaces
+ in the source.
+ (Tree::RecordNamespace): Method to do what the name says ;-)
+ (Tree::Namespaces): Property to get at the namespaces hashtable.
+
+ * cs-parser.jay (namespace_declaration): Call RecordNamespace to
+ keep track.
+
+ * rootcontext.cs (IsNamespace): Fixed it :-)
+
+2001-09-14 Miguel de Icaza <miguel@ximian.com>
+
+ * class.cs (TypeContainer::FindMembers): Add support for
+ constructors.
+ (MethodCore): New class that encapsulates both the shared aspects
+ of a Constructor and a Method.
+ (Method, Constructor): Factored pieces into MethodCore.
+
+ * driver.cs: Added --fatal which makes errors throw exceptions.
+ Load System assembly as well as part of the standard library.
+
+ * report.cs: Allow throwing exceptions on errors for debugging.
+
+ * modifiers.cs: Do not use `parent', instead use the real type
+ container to evaluate permission settings.
+
+ * class.cs: Put Ravi's patch back in. He is right, and we will
+ have to cope with the
+
+2001-09-14 Ravi Pratap <ravi@ximian.com>
+
+ * modifiers.cs (TypeAttr, MethodAttr, FieldAttr): Map protected internal to
+ FamORAssem, not FamANDAssem.
+
+2001-09-14 Miguel de Icaza <miguel@ximian.com>
+
+ * driver.cs: Added --parse option that only parses its input files
+ and terminates.
+
+ * class.cs: Reverted last change from Ravi to IsTopLevel. That is
+ incorrect. IsTopLevel is not used to tell whether an object is
+ root_types or not (that can be achieved by testing this ==
+ root_types). But to see if this is a top-level *class* (not
+ necessarly our "toplevel" container).
+
2001-09-14 Ravi Pratap <ravi@ximian.com>
* enum.cs (Enum::Define): Modify to call the Lookup method on the
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