208 lines
8.5 KiB
C++
Executable File
208 lines
8.5 KiB
C++
Executable File
// Filename: dcPackerInterface.h
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// Created by: drose (15Jun04)
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//
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////////////////////////////////////////////////////////////////////
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//
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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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////////////////////////////////////////////////////////////////////
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#ifndef DCPACKERINTERFACE_H
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#define DCPACKERINTERFACE_H
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#include "dcbase.h"
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#include "dcSubatomicType.h"
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class DCFile;
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class DCField;
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class DCSimpleParameter;
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class DCSwitchParameter;
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class DCClassParameter;
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class DCArrayParameter;
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class DCAtomicField;
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class DCMolecularField;
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class DCPackData;
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class DCPackerCatalog;
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BEGIN_PUBLISH
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// This enumerated type is returned by get_pack_type() and represents
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// the best choice for a subsequent call to pack_*() or unpack_*().
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enum DCPackType {
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// This one should never be returned in a normal situation.
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PT_invalid,
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// These PackTypes are all fundamental types, and should be packed
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// (or unpacked) with the corresponding call to pack_double(),
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// pack_int(), etc. PT_blob is the same as PT_string, but implies
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// that the string contains binary data.
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PT_double,
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PT_int,
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PT_uint,
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PT_int64,
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PT_uint64,
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PT_string,
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PT_blob,
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// The remaining PackTypes imply a need to call push() and pop().
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// They are all variants on the same thing: a list of nested fields,
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// but the PackType provides a bit of a semantic context.
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PT_array,
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PT_field,
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PT_class,
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PT_switch,
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};
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END_PUBLISH
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////////////////////////////////////////////////////////////////////
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// Class : DCPackerInterface
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// Description : This defines the internal interface for packing
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// values into a DCField. The various different DC
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// objects inherit from this.
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//
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// Normally these methods are called only by the
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// DCPacker object; the user wouldn't normally call
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// these directly.
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////////////////////////////////////////////////////////////////////
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class EXPCL_DIRECT DCPackerInterface {
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public:
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DCPackerInterface(const string &name = string());
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DCPackerInterface(const DCPackerInterface ©);
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virtual ~DCPackerInterface();
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PUBLISHED:
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INLINE const string &get_name() const;
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int find_seek_index(const string &name) const;
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virtual DCField *as_field();
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virtual const DCField *as_field() const;
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virtual DCSwitchParameter *as_switch_parameter();
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virtual const DCSwitchParameter *as_switch_parameter() const;
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virtual DCClassParameter *as_class_parameter();
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virtual const DCClassParameter *as_class_parameter() const;
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INLINE bool check_match(const DCPackerInterface *other) const;
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bool check_match(const string &description, DCFile *dcfile = NULL) const;
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public:
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virtual void set_name(const string &name);
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INLINE bool has_fixed_byte_size() const;
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INLINE size_t get_fixed_byte_size() const;
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INLINE bool has_fixed_structure() const;
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INLINE bool has_range_limits() const;
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INLINE size_t get_num_length_bytes() const;
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INLINE bool has_nested_fields() const;
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INLINE int get_num_nested_fields() const;
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virtual int calc_num_nested_fields(size_t length_bytes) const;
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virtual DCPackerInterface *get_nested_field(int n) const;
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virtual bool validate_num_nested_fields(int num_nested_fields) const;
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INLINE DCPackType get_pack_type() const;
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virtual void pack_double(DCPackData &pack_data, double value,
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bool &pack_error, bool &range_error) const;
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virtual void pack_int(DCPackData &pack_data, int value,
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bool &pack_error, bool &range_error) const;
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virtual void pack_uint(DCPackData &pack_data, unsigned int value,
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bool &pack_error, bool &range_error) const;
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virtual void pack_int64(DCPackData &pack_data, PN_int64 value,
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bool &pack_error, bool &range_error) const;
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virtual void pack_uint64(DCPackData &pack_data, PN_uint64 value,
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bool &pack_error, bool &range_error) const;
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virtual void pack_string(DCPackData &pack_data, const string &value,
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bool &pack_error, bool &range_error) const;
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virtual bool pack_default_value(DCPackData &pack_data, bool &pack_error) const;
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virtual void unpack_double(const char *data, size_t length, size_t &p,
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double &value, bool &pack_error, bool &range_error) const;
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virtual void unpack_int(const char *data, size_t length, size_t &p,
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int &value, bool &pack_error, bool &range_error) const;
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virtual void unpack_uint(const char *data, size_t length, size_t &p,
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unsigned int &value, bool &pack_error, bool &range_error) const;
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virtual void unpack_int64(const char *data, size_t length, size_t &p,
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PN_int64 &value, bool &pack_error, bool &range_error) const;
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virtual void unpack_uint64(const char *data, size_t length, size_t &p,
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PN_uint64 &value, bool &pack_error, bool &range_error) const;
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virtual void unpack_string(const char *data, size_t length, size_t &p,
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string &value, bool &pack_error, bool &range_error) const;
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virtual bool unpack_validate(const char *data, size_t length, size_t &p,
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bool &pack_error, bool &range_error) const;
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virtual bool unpack_skip(const char *data, size_t length, size_t &p,
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bool &pack_error) const;
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// These are the low-level interfaces for packing and unpacking
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// numbers from a buffer. You're responsible for making sure the
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// buffer has enough room, and for incrementing the pointer.
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INLINE static void do_pack_int8(char *buffer, int value);
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INLINE static void do_pack_int16(char *buffer, int value);
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INLINE static void do_pack_int32(char *buffer, int value);
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INLINE static void do_pack_int64(char *buffer, PN_int64 value);
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INLINE static void do_pack_uint8(char *buffer, unsigned int value);
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INLINE static void do_pack_uint16(char *buffer, unsigned int value);
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INLINE static void do_pack_uint32(char *buffer, unsigned int value);
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INLINE static void do_pack_uint64(char *buffer, PN_uint64 value);
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INLINE static void do_pack_float64(char *buffer, double value);
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INLINE static int do_unpack_int8(const char *buffer);
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INLINE static int do_unpack_int16(const char *buffer);
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INLINE static int do_unpack_int32(const char *buffer);
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INLINE static PN_int64 do_unpack_int64(const char *buffer);
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INLINE static unsigned int do_unpack_uint8(const char *buffer);
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INLINE static unsigned int do_unpack_uint16(const char *buffer);
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INLINE static unsigned int do_unpack_uint32(const char *buffer);
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INLINE static PN_uint64 do_unpack_uint64(const char *buffer);
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INLINE static double do_unpack_float64(const char *buffer);
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INLINE static void validate_int_limits(int value, int num_bits,
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bool &range_error);
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INLINE static void validate_int64_limits(PN_int64 value, int num_bits,
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bool &range_error);
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INLINE static void validate_uint_limits(unsigned int value, int num_bits,
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bool &range_error);
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INLINE static void validate_uint64_limits(PN_uint64 value, int num_bits,
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bool &range_error);
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const DCPackerCatalog *get_catalog() const;
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protected:
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virtual bool do_check_match(const DCPackerInterface *other) const=0;
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public:
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// These are declared public just so the derived classes can call
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// them easily. They're not intended to be called directly.
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virtual bool do_check_match_simple_parameter(const DCSimpleParameter *other) const;
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virtual bool do_check_match_class_parameter(const DCClassParameter *other) const;
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virtual bool do_check_match_switch_parameter(const DCSwitchParameter *other) const;
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virtual bool do_check_match_array_parameter(const DCArrayParameter *other) const;
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virtual bool do_check_match_atomic_field(const DCAtomicField *other) const;
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virtual bool do_check_match_molecular_field(const DCMolecularField *other) const;
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private:
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void make_catalog();
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protected:
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string _name;
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bool _has_fixed_byte_size;
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size_t _fixed_byte_size;
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bool _has_fixed_structure;
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bool _has_range_limits;
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size_t _num_length_bytes;
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bool _has_nested_fields;
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int _num_nested_fields;
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DCPackType _pack_type;
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private:
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DCPackerCatalog *_catalog;
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};
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#include "dcPackerInterface.I"
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#endif
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