116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file dcPackerCatalog.h
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* @author drose
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* @date 2004-06-21
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*/
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#ifndef DCPACKERCATALOG_H
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#define DCPACKERCATALOG_H
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#include "dcbase.h"
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class DCPackerInterface;
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class DCPacker;
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class DCSwitchParameter;
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/**
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* This object contains the names of all of the nested fields available within
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* a particular field. It is created on demand when a catalog is first
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* requested from a particular field; its ownership is retained by the field
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* so it must not be deleted.
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*/
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class EXPCL_DIRECT_DCPARSER DCPackerCatalog {
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private:
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DCPackerCatalog(const DCPackerInterface *root);
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DCPackerCatalog(const DCPackerCatalog ©);
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~DCPackerCatalog();
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public:
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// The Entry class records the static catalog data: the name of each field
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// and its relationship to its parent.
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class Entry {
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public:
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std::string _name;
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const DCPackerInterface *_field;
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const DCPackerInterface *_parent;
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int _field_index;
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};
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// The LiveCatalog class adds the dynamic catalog data: the actual location
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// of each field within the data record. This might be different for
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// different data records (since some data fields have a dynamic length).
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class LiveCatalogEntry {
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public:
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size_t _begin;
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size_t _end;
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};
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class LiveCatalog {
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public:
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INLINE size_t get_begin(int n) const;
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INLINE size_t get_end(int n) const;
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INLINE int get_num_entries() const;
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INLINE const Entry &get_entry(int n) const;
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INLINE int find_entry_by_name(const std::string &name) const;
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INLINE int find_entry_by_field(const DCPackerInterface *field) const;
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private:
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typedef pvector<LiveCatalogEntry> LiveEntries;
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LiveEntries _live_entries;
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const DCPackerCatalog *_catalog;
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friend class DCPackerCatalog;
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};
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INLINE int get_num_entries() const;
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INLINE const Entry &get_entry(int n) const;
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int find_entry_by_name(const std::string &name) const;
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int find_entry_by_field(const DCPackerInterface *field) const;
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const LiveCatalog *get_live_catalog(const char *data, size_t length) const;
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void release_live_catalog(const LiveCatalog *live_catalog) const;
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private:
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void add_entry(const std::string &name, const DCPackerInterface *field,
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const DCPackerInterface *parent, int field_index);
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void r_fill_catalog(const std::string &name_prefix, const DCPackerInterface *field,
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const DCPackerInterface *parent, int field_index);
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void r_fill_live_catalog(LiveCatalog *live_catalog, DCPacker &packer,
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const DCSwitchParameter *&last_switch) const;
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const DCPackerCatalog *update_switch_fields(const DCSwitchParameter *dswitch,
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const DCPackerInterface *switch_case) const;
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const DCPackerInterface *_root;
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LiveCatalog *_live_catalog;
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typedef pvector<Entry> Entries;
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Entries _entries;
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typedef pmap<std::string, int> EntriesByName;
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EntriesByName _entries_by_name;
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typedef pmap<const DCPackerInterface *, int> EntriesByField;
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EntriesByField _entries_by_field;
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typedef pmap<const DCPackerInterface *, DCPackerCatalog *> SwitchCatalogs;
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SwitchCatalogs _switch_catalogs;
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typedef pmap<const DCSwitchParameter *, std::string> SwitchPrefixes;
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SwitchPrefixes _switch_prefixes;
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friend class DCPackerInterface;
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};
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#include "dcPackerCatalog.I"
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#endif
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