Mercurial > projects > mde
diff mde/mergetag/iface/IDataSection.d @ 14:0047b364b6d9
Changed much of the mergetag structure and some functionality. First tests on windows.
Changes to mergetag Reader methods. New functionality allowing a dataSecCreator to cause sections to be skipped.
Moved several of the mergetag modules and some of their contents around. Moved all interfaces to separate modules in iface/ .
IReader & IWriter interfaces exist; MTTReader, MTBReader, MTTWriter, MTBWriter & DualWriter all now exist and implement IReader/IWriter (although the MTB variants are dummy classes); makeReader & makeWriter should both be fully functional.
Tested building on windows with partial success (works but window won't open).
Included a temporary hack from windows to get supported resolutions information.
committer: Diggory Hardy <diggory.hardy@gmail.com>
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Fri, 07 Mar 2008 17:51:02 +0000 |
parents | |
children | 9cb7b9310168 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mde/mergetag/iface/IDataSection.d Fri Mar 07 17:51:02 2008 +0000 @@ -0,0 +1,51 @@ +/** This module contains the interface IDataSection used by DataSet. +* +* It has been given its own module to avoid cyclic dependancies and separate out the functionality +* of mergetag. +* +* Also some base mergetag symbols have been moved here. +*/ +module mde.mergetag.iface.IDataSection; + +/** Typedef for data & section indexes (can be changed to ulong if necessary.) */ +typedef char[] ID; + +/** + * Interface for data storage classes, generally called DataSections, which contain all data-tags + * loaded from a single section of a file. + * + * A class implementing this may implement the addTag function to do whatever it likes with the + * data passed. DefaultData is one implementation which separates this data out into supported + * types and stores it appropriately (allowing merging with existing entries by keeping whichever + * tag was last loaded), while ignoring unsupported types. A different + * implementation could filter out the tags desired and use them directly, and ignore the rest. + * + * The tango.scrapple.text.convert.parseTo module provides a useful set of templated functions to + * convert the data accordingly. It is advised to keep the type definitions as defined in the file- + * format except for user-defined types, although this isn't necessary for library operation + * (addTag and writeAll are solely responsible for using and setting the type, ID and data fields). + * + * Another idea for a DataSection class: + * Use a void*[ID] variable to store all data (may also need a type var for each item). + * addTag should call a templated function which calls parse then casts to a void* and stores the data. + * Use a templated get(T)(ID) method which checks the type and casts to T. + */ +interface IDataSection +{ + /** Delegate passed to writeAll. */ + typedef void delegate (char[],ID,char[]) ItemDelg; + + /** Handles parsing of data items for all recognised types. + * + * Should ignore unsupported types/unwanted tags. + * + * TextExceptions (thrown by parseTo/parseFrom) are caught and a warning logged; execution + * then continues (so the offending tag gets dropped). */ + void addTag (char[],ID,char[]); + + /** Responsible for getting all data tags saved. + * + * writeAll should call the ItemDelg once for each tag to be saved with parameters in the same + * form as received by addTag (char[] type, ID id, char[] data). */ + void writeAll (ItemDelg); +}