2001-09-02 Miguel de Icaza <miguel@ximian.com>

[mono.git] / mcs / mcs / ChangeLog

2001-09-02  Miguel de Icaza  <miguel@ximian.com>

        * rootcontext.cs (RootContext::IsNamespace): new function, used to
        tell whether an identifier represents a namespace.

        * expression.cs (NamespaceExpr): A namespace expression, used only
        temporarly during expression resolution.
        (Expression::ResolveSimpleName, ::ResolvePrimary, ::ResolveName):
        utility functions to resolve names on expressions.

2001-09-01  Miguel de Icaza  <miguel@ximian.com>

        * codegen.cs: Add hook for StatementExpressions. 

        * class.cs: Fix inverted test for static flag in methods.

2001-09-02  Ravi Pratap  <ravi@ximian.com>

        * class.cs (Operator::CheckUnaryOperator): Correct error number used
        to make it coincide with MS' number.
        (Operator::CheckBinaryOperator): Ditto.

        * ../errors/errors.txt : Remove error numbers added earlier.

        * ../errors/cs1019.cs : Test case for error # 1019

        * ../errros/cs1020.cs : Test case for error # 1020

        * cs-parser.jay : Clean out commented cruft.
        (dimension_separators, dimension_separator): Comment out. Ostensibly not
        used anywhere - non-reducing rule.
        (namespace_declarations): Non-reducing rule - comment out.

        * enum.cs (Enum::AddEnum): Rename to AddEnumMember as I was getting confused
        with TypeContainer::AddEnum.

        * delegate.cs : New file for delegate handling classes.
        (Delegate): Class for declaring delegates.

        * makefile : Update.

        * cs-parser.jay (delegate_declaration): Implement.

2001-09-01  Ravi Pratap  <ravi@che.iitm.ac.in>

        * class.cs (Event::Define): Implement.
        (Event.EventBuilder): New member.

        * class.cs (TypeContainer::Populate): Update to define all enums and events
        we have.
        (Events): New property for the events arraylist we hold. Shouldn't we move to using
        readonly fields for all these cases ?

2001-08-31  Ravi Pratap  <ravi@che.iitm.ac.in>

        * class.cs (Property): Revamp to use the convention of making fields readonly.
        Accordingly modify code elsewhere.

        * class.cs : Apply patch from Mr. Mandar <go_mono@hotmail.com> for implementing
        the Define method of the Property class.

        * class.cs : Clean up applied patch and update references to variables etc. Fix 
        trivial bug.
        (TypeContainer::Populate): Update to define all the properties we have. Also
        define all enumerations.

        * enum.cs (Define): Implement.
        
2001-08-31  Ravi Pratap  <ravi@che.iitm.ac.in>

        * cs-parser.jay (overloadable_operator): The semantic value is an
        enum of the Operator class.
        (operator_declarator): Implement actions.
        (operator_declaration): Implement.

        * class.cs (Operator::CheckUnaryOperator): New static method to help in checking
        validity of definitions.
        (Operator::CheckBinaryOperator): Static method to check for binary operators
        (TypeContainer::AddOperator): New method to add an operator to a type.

        * cs-parser.jay (indexer_declaration): Added line to actually call the
        AddIndexer method so it gets added ;-)

        * ../errors/errors.txt : Update to include new error numbers. Are these numbers 
        already taken care of by the MS compiler ?  

2001-08-29  Ravi Pratap  <ravi@che.iitm.ac.in>

        * class.cs (Operator): New class for operator declarations.
        (Operator::OpType): Enum for the various operators.

2001-08-29  Ravi Pratap  <ravi@che.iitm.ac.in>

        * class.cs (TypeContainer::AddIndexer): Remove FIXME comment. We
        ostensibly handle this in semantic analysis.

        * cs-parser.jay (general_catch_clause): Comment out
        (specific_catch_clauses, specific_catch_clause): Ditto.
        (opt_general_catch_clause, opt_specific_catch_clauses): Ditto
        (catch_args, opt_catch_args): New productions.
        (catch_clause): Rewrite to use the new productions above
        (catch_clauses): Modify accordingly.
        (opt_catch_clauses): New production to use in try_statement
        (try_statement): Revamp. Basically, we get rid of one unnecessary rule
        and re-write the code in the actions to extract the specific and
        general catch clauses by being a little smart ;-)

        * ../tests/try.cs : Fix. It's not 'finalize' my friend, it's 'finally' !
        Hooray, try and catch statements parse fine !
        
2001-08-28  Ravi Pratap  <ravi@che.iitm.ac.in>

        * statement.cs (Block::GetVariableType): Fix logic to extract the type
        string from the hashtable of variables.

        * cs-parser.jay (event_accessor_declarations): Trivial fix. Man, how did
        I end up making that mistake ;-)
        (catch_clauses): Fixed gross error which made Key and Value of the 
        DictionaryEntry the same : $1 !!

2001-08-28  Ravi Pratap  <ravi@che.iitm.ac.in>

        * cs-tokenizer.cs (initTokens): Add keywords 'add' and 'remove'

        * cs-parser.jay (event_declaration): Correct to remove the semicolon
        when the add and remove accessors are specified. 

2001-08-28  Ravi Pratap  <ravi@che.iitm.ac.in>

        * cs-parser.jay (IndexerDeclaration): New helper class to hold
        information about indexer_declarator.
        (indexer_declarator): Implement actions.
        (parsing_indexer): New local boolean used to keep track of whether
        we are parsing indexers or properties. This is necessary because 
        implicit_parameters come into picture even for the get accessor in the 
        case of an indexer.
        (get_accessor_declaration, set_accessor_declaration): Correspondingly modified.

        * class.cs (Indexer): New class for indexer declarations.
        (TypeContainer::AddIndexer): New method to add an indexer to a type.
        (TypeContainer::indexers): New member to hold list of indexers for the
        type.

2001-08-27  Ravi Pratap  <ravi@che.iitm.ac.in>

        * cs-parser.jay (add_accessor_declaration): Implement action.
        (remove_accessor_declaration): Implement action.
        (event_accessors_declaration): Implement
        (variable_declarators): swap statements for first rule - trivial.

        * class.cs (Event): New class to hold information about event
        declarations.
        (TypeContainer::AddEvent): New method to add an event to a type
        (TypeContainer::events): New member to hold list of events.

        * cs-parser.jay (event_declaration): Implement actions.

2001-08-27  Ravi Pratap  <ravi@che.iitm.ac.in>

        * cs-parser.jay (dim_separators): Implement. Make it a string
        concatenating all the commas together, just as they appear.
        (opt_dim_separators): Modify accordingly
        (rank_specifiers): Update accordingly. Basically do the same
        thing - instead, collect the brackets here.
        (opt_rank_sepcifiers): Modify accordingly.
        (array_type): Modify to actually return the complete type string
        instead of ignoring the rank_specifiers.
        (expression_list): Implement to collect the expressions
        (variable_initializer): Implement. We make it a list of expressions
        essentially so that we can handle the array_initializer case neatly too.
        (variable_initializer_list): Implement.
        (array_initializer): Make it a list of variable_initializers
        (opt_array_initializer): Modify accordingly.

        * expression.cs (New::NType): Add enumeration to help us
        keep track of whether we have an object/delegate creation
        or an array creation.
        (New:NewType, New::Rank, New::Indices, New::Initializers): New
        members to hold data about array creation.
        (New:New): Modify to update NewType
        (New:New): New Overloaded contructor for the array creation
        case.

        * cs-parser.jay (array_creation_expression): Implement to call
        the overloaded New constructor.
        
2001-08-26  Ravi Pratap  <ravi@che.iitm.ac.in>

        * class.cs (TypeContainer::Constructors): Return member
        constructors instead of returning null.

2001-08-26  Miguel de Icaza  <miguel@ximian.com>

        * typemanager.cs (InitCoreTypes): Initialize the various core
        types after we have populated the type manager with the user
        defined types (this distinction will be important later while
        compiling corlib.dll)

        * expression.cs, literal.cs, assign.cs, constant.cs: Started work
        on Expression Classification.  Now all expressions have a method
        `Resolve' and a method `Emit'.

        * codegen.cs, cs-parser.jay: Fixed the bug that stopped code
        generation from working.     Also add some temporary debugging
        code. 
        
2001-08-24  Miguel de Icaza  <miguel@ximian.com>

        * codegen.cs: Lots of code generation pieces.  This is only the
        beginning, will continue tomorrow with more touches of polish.  We
        handle the fundamentals of if, while, do, for, return.  Others are
        trickier and I need to start working on invocations soon.
        
        * gen-treedump.cs: Bug fix, use s.Increment here instead of
        s.InitStatement. 

        * codegen.cs (EmitContext): New struct, used during code
        emission to keep a context.   Most of the code generation will be
        here. 

        * cs-parser.jay: Add embedded blocks to the list of statements of
        this block.  So code generation proceeds in a top down fashion.

2001-08-23  Miguel de Icaza  <miguel@ximian.com>

        * statement.cs: Add support for multiple child blocks.

2001-08-22  Miguel de Icaza  <miguel@ximian.com>

        * codegen.cs (EmitCode): New function, will emit the code for a
        Block of code given a TypeContainer and its ILGenerator. 

        * statement.cs (Block): Standard public readonly optimization.
        (Block::Block constructors): Link children. 
        (Block::Child): Child Linker.
        (Block::EmitVariables): Emits IL variable declarations.

        * class.cs: Drop support for MethodGroups here, delay until
        Semantic Analysis.
        (Method::): Applied the same simplification that I did before, and
        move from Properties to public readonly fields.
        (Method::ParameterTypes): Returns the parameter types for the
        function, and implements a cache that will be useful later when I
        do error checking and the semantic analysis on the methods is
        performed.
        (Constructor::GetCallingConvention): Renamed from CallingConvetion
        and made a method, optional argument tells whether this is a class
        or a structure to apply the `has-this' bit.
        (Method::GetCallingConvention): Implement, returns the calling
        convention. 
        (Method::Define): Defines the type, a second pass is performed
        later to populate the methods.

        (Constructor::ParameterTypes): implement a cache similar to the
        one on Method::ParameterTypes, useful later when we do semantic
        analysis. 

        (TypeContainer::EmitMethod):  New method.  Emits methods.

        * expression.cs: Removed MethodGroup class from here.
        
        * parameter.cs (Parameters::GetCallingConvention): new method.

2001-08-21  Miguel de Icaza  <miguel@ximian.com>

        * class.cs (TypeContainer::Populate): Drop RootContext from the
        argument. 

        (Constructor::CallingConvention): Returns the calling convention.
        (Constructor::ParameterTypes): Returns the constructor parameter
        types. 
        
        (TypeContainer::AddConstructor): Keep track of default constructor
        and the default static constructor.

        (Constructor::) Another class that starts using `public readonly'
        instead of properties. 

        (Constructor::IsDefault): Whether this is a default constructor. 

        (Field::) use readonly public fields instead of properties also.

        (TypeContainer::TypeAttr, TypeContainer::AddConstructor): Keep
        track of static constructors;  If none is used, turn on
        BeforeFieldInit in the TypeAttributes. 

        * cs-parser.jay (opt_argument_list): now the return can be null
        for the cases where there are no arguments. 

        (constructor_declarator): If there is no implicit `base' or
        `this', then invoke the default parent constructor. 
        
        * modifiers.cs (MethodAttr): New static function maps a set of
        modifiers flags into a MethodAttributes enum
        (FieldAttr): renamed from `Map'.  So now we have FieldAttr,
        MethodAttr, TypeAttr to represent the various mappings where the
        modifiers are used.
        (FieldAttr): Map also `readonly' to `FieldAttributes.InitOnly'  

2001-08-19  Miguel de Icaza  <miguel@ximian.com>

        * parameter.cs (GetParameterInfo): Fix bug where there would be no
        method arguments.

        * interface.cs (PopulateIndexer): Implemented the code generator
        for interface indexers.

2001-08-17  Miguel de Icaza  <miguel@ximian.com>

        * interface.cs (InterfaceMemberBase): Now we track the new status
        here.  

        (PopulateProperty): Implement property population.  Woohoo!  Got
        Methods and Properties going today. 

        Removed all the properties for interfaces, and replaced them with
        `public readonly' fields. 

2001-08-16  Miguel de Icaza  <miguel@ximian.com>

        * interface.cs (AddEvent, AddMethod, AddIndexer, AddProperty):
        initialize their hashtables/arraylists only when they are needed
        instead of doing this always.

        * parameter.cs: Handle refs and out parameters.

        * cs-parser.jay: Use an ArrayList to construct the arguments
        instead of the ParameterCollection, and then cast that to a
        Parameter[] array.

        * parameter.cs: Drop the use of ParameterCollection and use
        instead arrays of Parameters.

        (GetParameterInfo): Use the Type, not the Name when resolving
        types. 

2001-08-13  Miguel de Icaza  <miguel@ximian.com>

        * parameter.cs: Eliminate the properties Name, Type and ModFlags,
        and instead use public readonly fields.

        * class.cs: Put back walking code for type containers.

2001-08-11  Miguel de Icaza  <miguel@ximian.com>

        * class.cs (MakeConstant): Code to define constants.

        * rootcontext.cs (LookupType): New function.  Used to locate types 

        
2001-08-08  Miguel de Icaza  <miguel@ximian.com>

        * rootcontext.cs: OH MY!  My trick works!   It is amazing how nice
        this System.Reflection code is.  Kudos to Microsoft
        
        * typemanager.cs: Implement a type cache and avoid loading all
        types at boot time.  Wrap in LookupType the internals.  This made
        the compiler so much faster.  Wow.  I rule!
        
        * driver.cs: Make sure we always load mscorlib first (for
        debugging purposes, nothing really important).

        * Renamespaced things that were on `CSC' to `CIR'.  Maybe I should
        have moved to `CSC' rather than `CIR'.  Oh man!  The confussion!  

        * rootcontext.cs: Lookup types on their namespace;  Lookup types
        on namespaces that have been imported using the `using' keyword.

        * class.cs (TypeContainer::TypeAttr): Virtualize.
        (Class::TypeAttr): Return attributes suitable for this bad boy.
        (Struct::TypeAttr): ditto.
        Handle nested classes.
        (TypeContainer::) Remove all the type visiting code, it is now
        replaced with the rootcontext.cs code

        * rootcontext.cs (GetClassBases): Added support for structs. 

2001-08-06  Miguel de Icaza  <miguel@ximian.com>

        * interface.cs, statement.cs, class.cs, parameter.cs,
        rootcontext.cs, gen-treedump.cs, enum.cs, cs-parse.jay:
        Drop use of TypeRefs, and use strings instead.

2001-08-04  Miguel de Icaza  <miguel@ximian.com>

        * rootcontext.cs: 

        * class.cs (Struct::Struct): set the SEALED flags after
        checking the modifiers.
        (TypeContainer::TypeAttr): new property, returns the
        TypeAttributes for a class.  

        * cs-parser.jay (type_list): Oops, list production was creating a
        new list of base types.

        * rootcontext.cs (StdLib): New property.
        (GetInterfaceTypeByName): returns an interface by type name, and
        encapsulates error handling here.
        (GetInterfaces): simplified.
        (ResolveTree): Encapsulated all the tree resolution here.
        (CreateClass, GetClassBases, GetInterfaceOrClass): Create class
        types. 
        
        * driver.cs: Add support for --nostdlib, to avoid loading the
        default assemblies.
        (Main): Do not put tree resolution here. 

        * rootcontext.cs: Beginning of the class resolution.

2001-08-03  Miguel de Icaza  <miguel@ximian.com>

        * rootcontext.cs: Provide better error reporting. 

        * cs-parser.jay (interface_base): set our $$ to be interfaces.

        * rootcontext.cs (CreateInterface): Handle the case where there
        are no parent interfaces.
        
        (CloseTypes): Routine to flush types at the end.
        (CreateInterface): Track types.
        (GetInterfaces): Returns an array of Types from the list of
        defined interfaces.

        * typemanager.c (AddUserType): Mechanism to track user types (puts
        the type on the global type hash, and allows us to close it at the
        end). 
        
2001-08-02  Miguel de Icaza  <miguel@ximian.com>

        * tree.cs: Removed RecordType, added RecordClass, RecordStruct and
        RecordInterface instead.

        * cs-parser.jay: Updated to reflect changes above.

        * decl.cs (Definition): Keep track of the TypeBuilder type that
        represents this type here.  Not sure we will use it in the long
        run, but wont hurt for now.

        * driver.cs: Smaller changes to accomodate the new code.

        Call ResolveInterfaceBases, Call ResolveClassBases, Save assembly
        when done. 

        * rootcontext.cs (CreateInterface):  New method, used to create
        the System.TypeBuilder type for interfaces.
        (ResolveInterfaces): new entry point to resolve the interface
        hierarchy. 
        (CodeGen): Property, used to keep track of the code generator.

2001-07-26  Miguel de Icaza  <miguel@ximian.com>

        * cs-parser.jay: Add a second production for delegate_declaration
        with `VOID'.

        (enum_body): Put an opt_comma here instead of putting it on
        enum_body or enum_member_declarations so we can handle trailing
        commas on enumeration members.  Gets rid of a shift/reduce.
        
        (type_list): Need a COMMA in the middle.

        (indexer_declaration): Tell tokenizer to recognize get/set

        * Remove old targets.

        * Re-add the parser target.

2001-07-13  Simon Cozens <simon@simon-cozens.org>

        * cs-parser.jay: Add precendence rules for a number of operators
        ot reduce the number of shift/reduce conflicts in the grammar.
        
2001-07-17  Miguel de Icaza  <miguel@ximian.com>

        * tree.cs: moved IGenerator interface and renamed it to ITreeDump
        and put it here.

        Get rid of old crufty code.

        * rootcontext.cs: Use this to keep track of the parsed
        representation and the defined types available to the program. 

        * gen-treedump.cs: adjust for new convention.

        * type.cs: Split out the type manager, and the assembly builder
        from here. 

        * typemanager.cs: the type manager will live here now.

        * cil-codegen.cs: And the code generator here. 

2001-07-14  Sean MacIsaac  <macisaac@ximian.com>

        * makefile: Fixed up for easy making.

2001-07-13  Simon Cozens <simon@simon-cozens.org>

        * cs-parser.jay (rank_specifier): Remove a conflict by reordering
        the 

        (unary_expression): Expand pre_increment_expression and
        post_decrement_expression to reduce a shift/reduce.

2001-07-11  Simon Cozens

        * cs-tokenizer.cs: Hex numbers should begin with a 0.

        Improve allow_keyword_as_indent name.

2001-06-19  Miguel de Icaza  <miguel@ximian.com>

        * Adjustments for Beta2. 

2001-06-13  Miguel de Icaza  <miguel@ximian.com>

        * decl.cs: Added `Define' abstract method.
        (InTransit): new property, used to catch recursive definitions. 

        * interface.cs: Implement `Define'. 

        * modifiers.cs: Map Modifiers.constants to
        System.Reflection.TypeAttribute flags.

        * class.cs: Keep track of types and user-defined types.
        (BuilderInit): New method for creating an assembly
        (ResolveType): New function to launch the resolution process, only
        used by interfaces for now.

        * cs-parser.jay: Keep track of Classes, Structs and Interfaces
        that are inserted into the name space. 

2001-06-08  Miguel de Icaza  <miguel@ximian.com>

        * ARGH.  I have screwed up my tree so many times due to the use of
        rsync rather than using CVS.  Going to fix this at once. 

        * driver.cs: Objetify driver.  Load assemblies, use assemblies to
        load types.

2001-06-07  Miguel de Icaza  <miguel@ximian.com>

        * Experiment successful: Use System.Type rather that our own
        version of Type.  

2001-05-25  Miguel de Icaza  <miguel@ximian.com>

        * cs-parser.jay: Removed nsAliases from here.

        Use new namespaces, handle `using XXX;' 

        * namespace.cs: Reimplemented namespace handling, use a recursive
        definition of the class.  Now we can keep track of using clauses
        and catch invalid using clauses.

2001-05-24  Miguel de Icaza  <miguel@ximian.com>

        * gen-treedump.cs: Adapted for all the renaming.

        * expression.cs (Expression): this class now has a Type property
        which returns an expression Type.

        (Probe::, New::, TypeOf::, SizeOf::, Constant::): renamed from
        `Type', as this has a different meaning now in the base

2001-05-22  Miguel de Icaza  <miguel@ximian.com>

        * interface.cs, class.cs: Removed from all the sources the
        references to signature computation, as we can not do method
        signature computation during the parsing time, as we are not
        trying to solve at that point distinguishing:

        class X {
                void a (Blah x) {}
                void a (NS.Blah x) {}
        }

        Which depending on the context might be valid or not, as we do not
        know if Blah is the same thing as NS.Blah at that point.

        * Redid everything so the code uses TypeRefs now instead of
        Types.  TypeRefs are just temporary type placeholders, that need
        to be resolved.  They initially have a pointer to a string and the
        current scope in which they are used.  This is used later by the
        compiler to resolve the reference to an actual Type. 

        * DeclSpace is no longer a CIR.Type, and neither are
        TypeContainers (Class and Struct) nor Interfaces nor Enums.  They
        are all DeclSpaces, but no Types. 

        * type.cs (TypeRefManager): This implements the TypeRef manager,
        which keeps track of all the types that need to be resolved after
        the parsing has finished. 

2001-05-13  Miguel de Icaza  <miguel@ximian.com>

        * ARGH.  We are going to have to store `foreach' as a class rather
        than resolving it, as we need to verify error 1579 after name
        resolution.   *OR* we could keep a flag that says `This request to
        IEnumerator comes from a foreach statement' which we can then use
        to generate the error.

2001-05-10  Miguel de Icaza  <miguel@ximian.com>

        * class.cs (TypeContainer.AddMethod): we now add methods to the
        MethodGroup instead of the method hashtable.  

        * expression.cs: Add MethodGroup abstraction, which gets us one
        step closer to the specification in the way we handle method
        declarations.  

        * cs-parser.jay (primary_expression): qualified_identifier now
        tried to match up an identifier to a local variable reference or
        to a parameter reference.

        current_local_parameters is now a parser global variable that
        points to the current parameters for the block, used during name
        lookup.

        (property_declaration): Now creates an implicit `value' argument to
        the set accessor.

2001-05-09  Miguel de Icaza  <miguel@ximian.com>

        * parameter.cs: Do not use `param' arguments as part of the
        signature, per the spec.

2001-05-08  Miguel de Icaza  <miguel@ximian.com>

        * decl.cs: Base class for classes, structs and interfaces.  This
        is the "Declaration Space" 

        * cs-parser.jay: Use CheckDef for checking declaration errors
        instead of having one on each function.

        * class.cs: Factor out some code for handling error handling in
        accordance to the "Declarations" section in the "Basic Concepts"
        chapter in the ECMA C# spec.

        * interface.cs: Make all interface member classes derive from
        InterfaceMemberBase.

2001-05-07  Miguel de Icaza  <miguel@ximian.com>

        * Many things: all interfaces are parsed and generated in
        gen-treedump.  Support for member variables, constructors,
        destructors, properties, constants is there.

        Beginning of the IL backend, but very little done, just there for
        testing purposes. 

2001-04-29  Miguel de Icaza  <miguel@ximian.com>

        * cs-parser.jay: Fix labeled statement.

        * cs-tokenizer.cs (escape): Escape " and ' always.
        ref_line, ref_name: keep track of the line/filename as instructed
        by #line by the compiler.
        Parse #line.

2001-04-27  Miguel de Icaza  <miguel@ximian.com>

        * System.CodeDOM/CodeBinaryOperatorExpression.cs: Rearrange enum
        to match the values in System.CodeDOM.

        Divid renamed to Divide.

        * System.CodeDOM/CodeForLoopStatement.cs: Always have valid
        statements. 
        (Statements.set): remove.

        * System.CodeDOM/CodeCatchClause.cs: always have a valid
        statements. 

        * System.CodeDOM/CodeIfStatement.cs: trueStatements and
        falseStatements always have valid values. 

        * cs-parser.jay: Use System.CodeDOM now.