+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>
- * expression.cs (LValue): Add new method AddressOf to be used by
+ * 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