/*

* Copyright (c) 2000 - 2001 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

/** ----------------------------------------------------------------------- **

    @package:     NW_WBXML

    @synopsis:    default

    @description: Wbxml token definitions

 ** ----------------------------------------------------------------------- **/

#ifndef NW_PARSER_WBXML_PARSE_H

#define NW_PARSER_WBXML_PARSE_H

#include "cxml_proj.h"

#include "nw_wbxml_token.h"

#include "nw_wbxml_event.h"

#ifdef __cplusplus

extern "C" {

#endif /* __cplusplus */

/** ----------------------------------------------------------------------- **

    @struct:      NW_WBXML_CP_Registry_Entry

    @synopsis:    Registry entry.

    @scope:       public

    @variables:

       NW_Uint8 code_page

                  The code page.

       NW_Uint32 start_offset

                  Start offset.

    @description: Each entry must record if it is for tokens or attributes.

                  A trick to encode this without extra memory relies on the

                  use of two bytes in WBXML to encode a page switch.  With two 

                  bytes one has an even offset and one an odd offset.  We pick

                  the even if it is a tag page and the odd offset if it is an 

                  attribute page. 

 ** ----------------------------------------------------------------------- **/

typedef struct NW_WBXML_CP_Registry_Entry_s{

  NW_Uint8 code_page;

  NW_Uint32 start_offset;

}NW_WBXML_CP_Registry_Entry_t;

/** ----------------------------------------------------------------------- **

    @struct:      NW_WBXML_CP_Registry

    @synopsis:    The code page registry.

    @scope:       public

    @variables:

       NW_WBXML_CP_Registry_Entry_t* storage

                  Storage array.

       NW_WBXML_CP_Registry_Entry_t* current

                  Current entry.

       NW_Int32 count

                  Entry count.

    @description: The code page registry.

 ** ----------------------------------------------------------------------- **/

typedef struct NW_WBXML_CP_Registry_s {

  NW_WBXML_CP_Registry_Entry_t* storage;

  NW_WBXML_CP_Registry_Entry_t* current;

  NW_Int32 count;

  // WLIU_DEBUG:NW_Int32 realcount;

} NW_WBXML_CP_Registry_t;

/* ----------------------------------------------------------------------- **

   TO DO: the NW_Byte code pointer needs to be removed and put into a

   derived class in the buffer implementation 

** ----------------------------------------------------------------------- **/

/** ----------------------------------------------------------------------- **

    @struct:      NW_WBXML_Parser

    @synopsis:    The parser.

    @scope:       public

    @variables:

       const struct NW_WBXML_EventHandler_s* handler

                  Event handlers.

       void* context

                  Context to pass to event handlers.

       NW_Uint32 flags

                  The flags.

       NW_Uint32 state

                  The state.

       NW_Uint8 tag_code_page

                  The tag code page.

       NW_Uint8 attribute_code_page

                  The attribute code page.

       NW_WBXML_CP_Registry_t cp_registry

                  The code page registry.

       NW_Uint32 dictionary

                  1-based index into dictionary table.

       NW_WBXML_Document_t* doc

                  The document.

       NW_Uint32 offset

                  Offset into bytecode.

       NW_Uint32 left

                  Byte code left after current pointer.

       NW_Status_t status

                  Parser status from CallBacks.

       NW_Byte* p

                  Byte code pointer.

       NW_Uint8 ext_t_not_table_index

                  A boolean: whether the associated index with

                  EXT_T_[0,1,2] refs a string table or not, defaults

                  to 0 meaning use string table, 1 means associated

                  integer with EXT_T_[0,1,2] is not a string table

                  index

    @description: The parser.

 ** ----------------------------------------------------------------------- **/

struct NW_WBXML_Parser_s {

  const struct NW_WBXML_EventHandler_s* handler; /* Event handlers */

  void* context;                           /* Context to pass to event handlers */

  NW_Uint32 flags;                         

  NW_Uint32 state;

  NW_Uint8 tag_code_page;

  NW_Uint8 attribute_code_page;

  NW_WBXML_CP_Registry_t cp_registry;

  NW_Uint32 dictionary;                     /* 1-based index into dictionary table */

  NW_WBXML_Document_t* doc;

  NW_Uint32 offset;                          /*Offset into bytecode */

  NW_Uint32 left;                            /* Byte code left after current pointer */

  NW_Status_t status;                       /* Parser status from CallBacks */

  NW_Byte* p;                               /*Byte code pointer */

  NW_Uint32 recursiveCallCnt;               /* counts "element parse/content parse" recursive calls*/

  /* a boolean, whether EXT_T_[0,1,2] refs a string table or not,

     defaults to 0 meaning use string table, 1 means associated

     integer with EXT_T_[0,1,2] is not a string table index */

  NW_Uint8 ext_t_not_table_index;

//  WLIU_DEBUG: NW_Int32 lastValid;

};

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_newInPlace

    @synopsis:    Parser initialization 

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

    @description: Parser initialization 

 ** ----------------------------------------------------------------------- **/

IMPORT_C void

NW_WBXML_Parser_newInPlace (NW_WBXML_Parser_t* parser);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_reset

    @synopsis:    Reset the parser.

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

    @description: Reset the parser.

 ** ----------------------------------------------------------------------- **/

void

NW_WBXML_Parser_reset (NW_WBXML_Parser_t* parser);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_delete

    @synopsis:    Destructor.

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

    @description: Destructor.

 ** ----------------------------------------------------------------------- **/

void

NW_WBXML_Parser_delete (NW_WBXML_Parser_t* parser);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_addCPRegistry

    @synopsis:    Add CP registry.

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

       [in] NW_WBXML_CP_Registry_Entry_t* storage

                  The entries.

       [in] NW_Int32 count

                  The number of entries.

    @description: Create an uninitialized code page registry. As long

                  as the registry is not created, it will be

                  ignored. Once it has been created, the parser will

                  check the REGISTRY_INIT flag. If this is not set, the

                  registry will be initialized as the parser runs. If

                  this is set, then the registry will be consulted when

                  updating the offset.

    @returns:     NW_Status_t

                  Status of operation.

       [NW_STAT_SUCCESS]

                  Always returns success.

 ** ----------------------------------------------------------------------- **/

NW_Status_t

NW_WBXML_Parser_addCPRegistry(NW_WBXML_Parser_t* parser,

                              NW_WBXML_CP_Registry_Entry_t* storage,

                              NW_Int32 count);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_registerHandler

    @synopsis:    Register handler.

    @scope:       public

    @parameters:

       [in] NW_WBXML_Parser_t* parser

                  The parser.

       [in] const struct NW_WBXML_EventHandler_s* handler

                  The handler.

       [in] void* context

                  The context.

    @description: Cache the parser's event handler and context.

    @returns:     NW_Status_t

                  Status of operation.

       [NW_STAT_SUCCESS]

                  Always returns success.

 ** ----------------------------------------------------------------------- **/

IMPORT_C NW_Status_t

NW_WBXML_Parser_registerHandler(NW_WBXML_Parser_t* parser,

                                const struct NW_WBXML_EventHandler_s* handler,

                                void* context);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_saveContext

    @synopsis:    Save parser context.

    @scope:       public

    @parameters:

       [in] NW_WBXML_Parser_t* parser

                  The parser.

       [out] NW_WBXML_Parser_t* context

                  The context.

    @description: Save/restore context can be used if the parser is to be

                  invoked reentrantly (in a callback).  Normally this should

                  be avoided since the only really safe way to do this is to

                  save the whole parser object on the stack. 

    @returns:     NW_Status_t

                  Status of operation.

       [NW_STAT_SUCCESS]

                  Always returns success.

 ** ----------------------------------------------------------------------- **/

NW_Status_t

NW_WBXML_Parser_saveContext(NW_WBXML_Parser_t* parser,

                            NW_WBXML_Parser_t* context);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_restoreContext

    @synopsis:    Restore parser context.

    @scope:       public

    @parameters:

       [in] NW_WBXML_Parser_t* parser

                  The parser.

       [in] NW_WBXML_Parser_t* context

                  The context.

    @description: Restore parser context. See description for saveContext().

    @returns:     NW_Status_t

                  Status of operation.

       [NW_STAT_SUCCESS]

                  Always returns success.

 ** ----------------------------------------------------------------------- **/

NW_Status_t

NW_WBXML_Parser_restoreContext(NW_WBXML_Parser_t* parser, 

                               NW_WBXML_Parser_t* context);

/* ----------------------------------------------------------------------- **

   Get and set methods

** ----------------------------------------------------------------------- **/

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_getOffset

    @synopsis:    Get offset.

    @scope:       public

    @parameters:

       [in] NW_WBXML_Parser_t* parser

                  The parser.

    @description: Get offset.

    @returns:     NW_Uint32

                  Read offset.

 ** ----------------------------------------------------------------------- **/

NW_Uint32 

NW_WBXML_Parser_getOffset(NW_WBXML_Parser_t* parser);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_setOffset

    @synopsis:    Set offset.

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

       [in] NW_Uint32 offset

                  New offset.

    @description: Set offset.

    @returns:     NW_Int32

                  Offset or -1 if out of range.

 ** ----------------------------------------------------------------------- **/

NW_Int32 

NW_WBXML_Parser_setOffset(NW_WBXML_Parser_t* parser, 

                          NW_Uint32 offset);  

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_setTagCodepage

    @synopsis:    Set tag codepage.

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

       [in] NW_Uint8 page

                  The page.

    @description: Set tag codepage.

    @returns:     NW_Status_t

                  Status of operation.

       [NW_STAT_SUCCESS]

                  Always returns success.

 ** ----------------------------------------------------------------------- **/

NW_Status_t

NW_WBXML_Parser_setTagCodepage(NW_WBXML_Parser_t* parser, 

                               NW_Uint8 page);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_getTagCodepage

    @synopsis:    Get tag codepage.

    @scope:       public

    @parameters:

       [in] NW_WBXML_Parser_t* parser

                  The parser.

    @description: Get tag codepage.

    @returns:     NW_Uint8

                  The code page.

 ** ----------------------------------------------------------------------- **/

NW_Uint8

NW_WBXML_Parser_getTagCodepage(NW_WBXML_Parser_t* parser);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_setAttrCodepage

    @synopsis:    Set attribute codepage.

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

       [in] NW_Uint8 page

                  The code page.

    @description: Set attribute codepage.

    @returns:     NW_Status_t

                  Status of operation.

       [NW_STAT_SUCCESS]

                  Always returns success.

 ** ----------------------------------------------------------------------- **/

NW_Status_t

NW_WBXML_Parser_setAttrCodepage(NW_WBXML_Parser_t* parser, 

                                NW_Uint8 page);

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_getAttrCodepage

    @synopsis:    Get attribute codepage.

    @scope:       public

    @parameters:

       [in] NW_WBXML_Parser_t* parser

                  The parser.

    @description: Get attribute codepage.

    @returns:     NW_Uint8

                  Code page.

 ** ----------------------------------------------------------------------- **/

NW_Uint8

NW_WBXML_Parser_getAttrCodepage(NW_WBXML_Parser_t* parser);

/* ----------------------------------------------------------------------- **

    Parse document elements 

** ----------------------------------------------------------------------- **/

/** ----------------------------------------------------------------------- **

    @function:    NW_WBXML_Parser_tagNameParse

    @synopsis:    Tag name parse.

    @scope:       public

    @parameters:

       [in-out] NW_WBXML_Parser_t* parser

                  The parser.

    @description: Parse the token and name part of a tag. This generates a

                  fully qualified token.

    @returns:     NW_Status_t

                  Status of operation.

       [NW_STAT_SUCCESS]

                  Tag name parsed.