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scriptbinder.h
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C/C++ Source or Header
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1999-09-13
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10KB
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378 lines
/////////////////////////////////////////////////////////////////////////////
// Name: No names yet.
// Purpose: Contrib. demo
// Author: Aleksandras Gluchovas
// Modified by:
// Created: 22/09/98
// RCS-ID: $Id: scriptbinder.h,v 1.1 1999/09/13 14:29:40 JS Exp $
// Copyright: (c) Aleskandars Gluchovas
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef __SCRIPTBINDER_G__
#define __SCRIPTBINDER_G__
#if defined( wxUSE_TEMPLATE_STL )
#include <vector>
#ifdef WIN32
#include <bstring.h>
#else
#include <strclass.h>
#include <string.h>
#endif
#else
#include "wxstlvec.h"
#include "wx/string.h"
// FIXME:: dirty!
typedef wxString string;
#endif
#ifndef ASSERT
// assert yourself
#define ASSERT(x) if (!(x) ) throw;
#endif
#include "markup.h"
// just another portable stream class...
class ScriptStream
{
protected:
char* mpBuf;
size_t mSize;
size_t mCapacity;
public:
ScriptStream();
~ScriptStream();
void WriteBytes( const void* srcBuf, size_t count );
ScriptStream& operator<<( const char* str );
ScriptStream& operator<<( const string& str );
ScriptStream& operator<<( char ch );
void endl();
inline char* GetBuf() { return mpBuf; }
inline size_t GetBufSize() { return mSize; }
// clears current contents of the stream
void Reset() { mSize = 0; }
};
class ScriptTemplate;
// used internally by ScriptTemplate
enum TEMPLATE_VARIABLE_TYPES
{
TVAR_INTEGER,
TVAR_STRING,
TVAR_DOUBLE,
TVAR_REF_ARRAY
};
// helper structures used only by ScriptTemplate
struct TVarInfo
{
public:
const char* mName;
int mType;
int mOfs;
TVarInfo( const char* name, int ofs, int varType )
: mName(name),
mType( varType ),
mOfs( ofs )
{}
};
struct TArrayInfo : public TVarInfo
{
public:
int mRefOfs;
int mSizeIntOfs;
int mObjRefTemplOfs;
TArrayInfo( const char* name )
: TVarInfo( name, 0, TVAR_REF_ARRAY )
{}
};
// stores offset of the given member (of the given class)
// to (*pOfs), though the use of template classes would have
// solved this problem in much clearer fashion
// FOR NOW:: obtaining physical offset of class member
// does not appeare to be protable across compilers?
// FIXME:: +/- 1 problem
#ifdef __UNIX__
#define WEIRD_OFFSET 1
#else
#define WEIRD_OFFSET 0
#endif
#define GET_VAR_OFS( className, varName, pOfs ) \
{ \
int* className::* varPtr; \
varPtr = (int* className::*)&className::varName; \
\
(*pOfs) = int(*(int*)&varPtr)-WEIRD_OFFSET; \
}
class ScriptSection;
#if defined( wxUSE_TEMPLATE_STL )
typedef vector<TVarInfo*> TVarListT;
// container class for sections
typedef vector<ScriptSection*> SectListT;
#else
typedef TVarInfo* TVarInfoPtrT;
typedef ScriptSection* ScriptSectionPtrT;
typedef WXSTL_VECTOR_SHALLOW_COPY(TVarInfoPtrT) TVarListT;
// container class for sections
typedef WXSTL_VECTOR_SHALLOW_COPY(ScriptSectionPtrT) SectListT;
#endif
// class performs preprocessing of arbitrary scripts,
// replaces identifiers enclosed in $(..) tag, whith
// values of the corresponding class member variables
class ScriptTemplate
{
protected:
// do not use string object here - parsing of
// C string can be much faster (in debug v.)
char* mTText;
TVarListT mVars;
inline void PrintVar( TVarInfo* pInfo,
void* dataObj,
ScriptStream& stm );
public:
ScriptTemplate( const string& templateText );
virtual ~ScriptTemplate();
bool HasVar( const char* name );
// Member variables registration methods.
// NOTE:: GET_VAR_OFS() macro should be used
// to get offset of the class member (see #define above)
void AddStringVar ( const char* name, int ofs );
void AddIntegerVar( const char* name, int ofs );
void AddDoubleVar ( const char* name, int ofs );
void AddObjectRefArray( const char* name,
int ofsRefToFirstObj,
int ofsObjSizeInt,
int ofsObjRefTempl
);
// reads the script, replaces $(..) tags with values
// of registered members of dataObj object, and outputs
// the result to given text stream
void PrintScript( void* dataObj, ScriptStream& stm );
};
class ScriptSection;
// class manages section and aggregated sections of
// inter-linked documents
class ScriptSection
{
protected:
// NOTE:: "$(NAME)", $(ID), "$(BODY)" and "$(REFLIST)" aree
// reseved template variables of ScriptSection
// the below there members are registered to ScriptTemplate,
// GUID within the section tree (numeric)
ScriptSection* mpParent;
string mId; // $(ID)
string mName; // $(NAME)
string mBody; // $(BODY)
// NULL, if this section is not aggregated anywhere
SectListT mSubsections; // aggregated sectons
SectListT mReferences; // registered as $(REFLIST)
bool mAutoHide; // see autoHide arg, in constructor
bool mSortOn; // TRUE, if sort subsectons by naem
// tempalte for this section
ScriptTemplate* mpSectTempl;
// template used for links (or references) to this section
ScriptTemplate* mpRefTempl;
// do not call destructor of this object,
// call RemoveRef() instead
int mRefCount;
static int mIdCounter; // generator of GUIDs
// fields registered and used by ScriptTemplate object
void* mRefFirst;
int mArrSize;
protected:
virtual void AddRef();
virtual void RemoveRef();
void DoRemoveEmptySections(int& nRemoved, SectListT& removedLst);
void DoRemoveDeadLinks( SectListT& removedLst);
public:
// NOTE:: pass NULL to certain template, if your sure
// this kind of template will never be used,
// e.g. if section is contained but never referrenced,
// then pReferenceTemplate can be NULL
// if autoHide option is TRUE, the section will be automatically
// collapsed (not shown) if it doesn't contain any references
// to other sections (e.g. could be usefull for autoamically
// hiding empty index-sections).
ScriptSection( const string& name = "",
const string& body = "",
ScriptTemplate* pSectionTemplate = NULL,
ScriptTemplate* pReferenceTemplate = NULL,
bool autoHide = FALSE,
bool sorted = FALSE
);
// calls RemoveRef() to all aggreagated sections first,
// then to all referenced section - this way all
// sections (even not aggregated ones) become "garbage-collected"
// NOTE:: do not call destructor directlly, call RemoveRef()
// instead
virtual ~ScriptSection();
// if addToReferencesToo is TRUE, section is aggregated and
// also added to reference list of this section
void AddSection( ScriptSection* pSection, bool addToReferencesToo = FALSE );
// add cross-reference to this given section
void AddReference( ScriptSection* pReferredSection );
// subsection may be given of variable depth level,
// e.g. "publications/reviews/software"
ScriptSection* GetSubsection( const char* name );
// returns list aggregated sections
SectListT& GetSubsections();
// binds reserved template names ( $(..) ) to member
// vairalbes in the ScriptSection class, should be called
// to initialize each user-code provided script template
static void RegisterTemplate( ScriptTemplate& sectionTempalte );
// prints out section tree to the stream, starting from
// this section as a root node
virtual void Print( ScriptStream& stm );
// searches empty sections which has autoHide == TRUE,
// and colapses them (this method should be called )
// on the root-section of the sections tree
// NOTE:: does not work properly, yet!
void RemoveEmptySections();
};
// base class for documnetation generators
// (allows user code set up target script type,
// independently of documentation type)
class DocGeneratorBase
{
protected:
MarkupTagsT mTags;
// override this method to do some post processing
// after generation of document, or even write some
// data into output stream, before the section tree
// is flushed into it.
// return FALSE, if something has gone wrong and
// document cannot be saved now
virtual bool OnSaveDocument( ScriptStream& stm )
{ return 1; }
// override this method to provide reference to
// the top section of the document (used as default
// starting section when saving a document)
virtual ScriptSection* GetTopSection()
{ return 0; }
public:
DocGeneratorBase()
: mTags(0) // no defaul script
{}
// dectrouctors of polymorphic classes SHOULD be virtual
virtual ~DocGeneratorBase() {}
// returns tags, being used for specific target script
MarkupTagsT GetScriptMarkupTags() { return mTags; }
// sets tag array for specific script
// NOTE:: Why virtual? since approach with MarkupTagsT is
// "flowless" only in theory. Overriding this method
// allows document generators to check the type of the
// target script, and perhaps make some modifications
// to generator's tamplates, to match the specific script
virtual void SetScriptMarkupTags( MarkupTagsT tags )
{ mTags = tags; }
// seves document to file starting from the root-node of
// the document (provided by GetTopSection() method),
// or from "pFromSection" if it's not NULL.
// fopenOptions arg. is string passed to fopen() method,
// returns TRUE, if saving was successfull
virtual bool SaveDocument( const char* fname,
const char* fopenOptions = "w",
ScriptSection* pFromSection = NULL
);
};
#endif