UT_OptionEntry.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        UT_OptionEntry.h (C++, Utility Library)
 *
 * COMMENTS:    Individual options held within a UT_Options class.
 *
 */

#ifndef _UT_OPTIONENTRY_H_
#define _UT_OPTIONENTRY_H_

#include "UT_API.h"
#include "UT_SmallObject.h"
#include "UT_Assert.h"
#include "UT_IntArray.h"
#include "UT_StringArray.h"
#include "UT_StringHolder.h"
#include "UT_VectorTypes.h"
#include "UT_UniquePtr.h"
#include "UT_Options.h"

class UT_JSONValue;
class UT_JSONValueMap;
class UT_JSONWriter;

class UT_OptionEntry;
using UT_OptionEntryPtr = UT_UniquePtr<UT_OptionEntry>;

// The base class for data held by the UT_Options.
class UT_API UT_OptionEntry : public UT_SmallObject<UT_OptionEntry,
                                        UT_SMALLOBJECT_CLEANPAGES_DEFAULT,
                                        UT_SMALLOBJECT_PAGESIZE_DEFAULT,
                                        UT_SMALLOBJECT_THREADSAFE_ON>
{
public:
                                 UT_OptionEntry()
                                 { }
    virtual                     ~UT_OptionEntry()
                                 { }

    UT_OptionEntry(const UT_OptionEntry &) = delete;
    UT_OptionEntry &operator=(const UT_OptionEntry &) = delete;

    virtual UT_OptionType        getType() const
                                 { return UT_OPTION_INVALID; }
    virtual UT_OptionEntryPtr   clone() const
    {
        return UTmakeUnique<UT_OptionEntry>();
    }
    virtual int64                getMemoryUsage(bool inclusive) const
                                 { return inclusive ? sizeof(*this) : 0; }

    /// Hash a single option entry.
    unsigned                     hash() const;

    /// Compute equivalence for a given option entry
    unsigned                     isEqual(const UT_OptionEntry &cmp,
                                        fpreal64 tolerance = 0.0) const;

    bool                         getOptionString(UT_OptionFormat format,
                                         UT_WorkBuffer &result) const;
    bool                         getOptionString(UT_OptionFormat format,
                                         UT_String &result) const;

    enum UT_OptionTypeStorage
    {
        UT_OPTION_STORE_INVALID=-1,
        UT_OPTION_STORE_BOOL,
        UT_OPTION_STORE_INT,
        UT_OPTION_STORE_REAL,
        UT_OPTION_STORE_STRING,
        UT_OPTION_STORE_DICT,
    };

    /// Return the underlying storage type for the option
    static UT_OptionTypeStorage  optionStorage(UT_OptionType t)
    {
        switch (t)
        {
            case UT_OPTION_INT:
            case UT_OPTION_INTARRAY:
                return UT_OPTION_STORE_INT;

            case UT_OPTION_FPREAL:
            case UT_OPTION_VECTOR2:
            case UT_OPTION_VECTOR3:
            case UT_OPTION_VECTOR4:
            case UT_OPTION_QUATERNION:
            case UT_OPTION_MATRIX3:
            case UT_OPTION_MATRIX4:
            case UT_OPTION_UV:
            case UT_OPTION_UVW:
            case UT_OPTION_FPREALARRAY:
            case UT_OPTION_MATRIX2:
                return UT_OPTION_STORE_REAL;

            case UT_OPTION_STRING:
            case UT_OPTION_STRINGRAW:
            case UT_OPTION_STRINGARRAY:
                return UT_OPTION_STORE_STRING;

            case UT_OPTION_DICT:
            case UT_OPTION_DICTARRAY:
                return UT_OPTION_STORE_DICT;

            case UT_OPTION_BOOL:
                return UT_OPTION_STORE_BOOL;

            case UT_OPTION_INVALID:
            case UT_OPTION_NUM_TYPES:
                return UT_OPTION_STORE_INVALID;
        }
        UT_ASSERT(0);
        return UT_OPTION_STORE_INVALID;
    }
    /// Returns the tuple size, or 0 if the option is variadic (i.e. INTARRAY)
    static exint        optionSize(UT_OptionType t)
    {
        switch (t)
        {
            case UT_OPTION_INT:
            case UT_OPTION_FPREAL:
            case UT_OPTION_STRING:
            case UT_OPTION_STRINGRAW:
            case UT_OPTION_DICT:
            case UT_OPTION_BOOL:
                return 1;

            case UT_OPTION_VECTOR2:
            case UT_OPTION_UV:
                return 2;

            case UT_OPTION_VECTOR3:
            case UT_OPTION_UVW:
                return 3;

            case UT_OPTION_VECTOR4:
            case UT_OPTION_MATRIX2:
            case UT_OPTION_QUATERNION:
                return 4;
            case UT_OPTION_MATRIX3:
                return 9;
            case UT_OPTION_MATRIX4:
                return 16;

            case UT_OPTION_INTARRAY:
            case UT_OPTION_FPREALARRAY:
            case UT_OPTION_STRINGARRAY:
            case UT_OPTION_DICTARRAY:
                return 0;

            case UT_OPTION_INVALID:
            case UT_OPTION_NUM_TYPES:
                return -1;
        }
        UT_ASSERT(0);
        return -1;
    }
    UT_OptionTypeStorage         optionStorage() const
                                    { return optionStorage(getType()); }
    exint                        optionSize() const
                                    { return optionSize(getType()); }

    bool                         importOption(int64 &value) const;
    bool                         importOption(bool &value) const;
    bool                         importOption(fpreal64 &value) const;
    bool                         importOption(UT_StringHolder &value) const;
    bool                         importOption(UT_OptionsHolder &value) const;
    bool                         importOption(UT_Vector2D &value) const;
    bool                         importOption(UT_Vector3D &value) const;
    bool                         importOption(UT_Vector4D &value) const;
    bool                         importOption(UT_QuaternionD &value) const;
    bool                         importOption(UT_Matrix2D &value) const;
    bool                         importOption(UT_Matrix3D &value) const;
    bool                         importOption(UT_Matrix4D &value) const;

    // Generic import which handles arbitrary length int/float/string data
    bool                         importOption(UT_Array<int32> &value) const;
    bool                         importOption(UT_Array<int64> &value) const;
    bool                         importOption(UT_Array<fpreal32> &value) const;
    bool                         importOption(UT_Array<fpreal64> &value) const;
    bool                         importOption(UT_StringArray &value) const;
    bool                         importOption(UT_Array<UT_StringHolder> &value) const;
    bool                         importOption(UT_Array<UT_OptionsHolder> &value) const;

    // Returns the values directly, or a default value if the data is an
    // inappropriate type.
    int64                        getOptionI() const;
    bool                         getOptionB() const;
    fpreal64                     getOptionF() const;
    const UT_Vector2D           &getOptionV2() const;
    const UT_Vector3D           &getOptionV3() const;
    const UT_Vector4D           &getOptionV4() const;
    const UT_QuaternionD        &getOptionQ() const;
    const UT_Matrix2D           &getOptionM2() const;
    const UT_Matrix3D           &getOptionM3() const;
    const UT_Matrix4D           &getOptionM4() const;
    const UT_Vector2D           &getOptionUV() const;
    const UT_Vector3D           &getOptionUVW() const;

    // Note that, if the string value contains binary data with null
    // characters, the UT_String version of getOptionS will not be able to
    // tell you the length of the data, since UT_String doesn't store the
    // length.
    UT_StringHolder              getOptionS() const;
    const UT_OptionsHolder      &getOptionDict() const;
    const UT_Int64Array         &getOptionIArray() const;
    const UT_Fpreal64Array      &getOptionFArray() const;
    const UT_StringArray        &getOptionSArray() const;
    const UT_Array<UT_OptionsHolder>    &getOptionDictArray() const;

    /// Save a single option to a JSON stream.  This is saved with the schema
    /// @code
    /// {
    ///     "name":"UT_OptionEntry",
    ///     "type":"object",
    ///     "properties": {
    ///        "type":{
    ///           "type":"string",
    ///           "enum":{ UT_Options::getStringFromOptionType() },
    ///        },
    ///        "value":{
    ///            "type":["bool", "integer", "float", "string", "array"],
    ///            "items":{"type":"float"},
    ///            "description":"Basic type or an array.
    ///                           Arrays must be 2,3,4,9 or 16 floats.
    ///                           Data should match given type",
    ///        },
    ///     },
    /// }
    /// @endcode
    bool                         saveJSON(UT_JSONWriter &w, bool compact) const;
    /// As above, except save to a UT_JSONValue instead of requiring the value
    /// go directly to a stream.
    void                         saveJSON(UT_JSONValue &v, bool compact) const;

    /// Create a UT_OptionEntry from a simple JSON value. This is not a
    /// dictionary with type information. It is a single value which may be
    /// an int, float, string, etc. The UT_OptionEntry type is inferred from
    /// the JSON type.
    /// If allow_type, then if a value contains "type" and "value" it is parsed
    /// as a TypedMap.  Otherwise, it will always be a option.
    /// If allow_dict, then nested maps will become dictionaries.  If both
    /// allow_type and allow_dict, things that look like types will be
    /// treated as types and then fall back to dictionaries.
    static UT_OptionEntryPtr    createEntry(const UT_JSONValue &v, bool allow_type = true, bool allow_dict = false);

    /// Create a UT_OptionEntry from a JSON map.  This is a dictionary
    /// with type information.
    static UT_OptionEntryPtr    createEntryFromTypedMap(const UT_JSONValueMap &map,
                                                UT_String &error_str);

    /// Convert string to and from UT_OptionType values.
    static UT_OptionType getOptionTypeFromString(const char *optiontypestr);
    static const char   *getStringFromOptionType(UT_OptionType optiontype);
};

UT_API size_t format(char *buffer, size_t bufsize, const UT_OptionEntry &o);


// A templatized version of the class above for holding specific data types.
template<class T, UT_OptionType ID>
class UT_OptionEntryImpl : public UT_OptionEntry
{
public:
    typedef T                    value_type;

                                 UT_OptionEntryImpl(const T &value)
                                     : myValue(value)
                                 { }
                                ~UT_OptionEntryImpl() override
                                 { }

    const T                     &getValue() const
                                 { return myValue; }
    UT_OptionType                getType() const override
                                 { return ID; }
    UT_OptionEntryPtr            clone() const override
    {
        return UTmakeUnique<UT_OptionEntryImpl>(myValue);
    }

    int64 getMemoryUsage(bool inclusive) const override
    {
        int64 mem = inclusive ? sizeof(*this) : 0;
        return mem;
    }

protected:
    T                            myValue;
};

typedef UT_OptionEntryImpl<int64, UT_OPTION_INT> UT_OptionInt;
typedef UT_OptionEntryImpl<bool, UT_OPTION_BOOL> UT_OptionBool;
typedef UT_OptionEntryImpl<fpreal64, UT_OPTION_FPREAL> UT_OptionFpreal;
typedef UT_OptionEntryImpl<UT_Vector2D, UT_OPTION_VECTOR2> UT_OptionVector2;
typedef UT_OptionEntryImpl<UT_Vector3D, UT_OPTION_VECTOR3> UT_OptionVector3;
typedef UT_OptionEntryImpl<UT_Vector4D, UT_OPTION_VECTOR4> UT_OptionVector4;
typedef UT_OptionEntryImpl<UT_QuaternionD, UT_OPTION_QUATERNION> UT_OptionQuaternion;
typedef UT_OptionEntryImpl<UT_Matrix2D, UT_OPTION_MATRIX2> UT_OptionMatrix2;
typedef UT_OptionEntryImpl<UT_Matrix3D, UT_OPTION_MATRIX3> UT_OptionMatrix3;
typedef UT_OptionEntryImpl<UT_Matrix4D, UT_OPTION_MATRIX4> UT_OptionMatrix4;
typedef UT_OptionEntryImpl<UT_Vector2D, UT_OPTION_UV> UT_OptionUV;
typedef UT_OptionEntryImpl<UT_Vector3D, UT_OPTION_UVW> UT_OptionUVW;

class UT_OptionString :
    public UT_OptionEntryImpl<UT_StringHolder, UT_OPTION_STRING>
{
public:
    typedef UT_OptionEntryImpl<UT_StringHolder, UT_OPTION_STRING> Base;

    UT_OptionString(const UT_StringHolder &value) : Base(value) {}

    int64 getMemoryUsage(bool inclusive) const override
    {
        int64 mem = inclusive ? sizeof(*this) : 0;
        mem += myValue.getMemoryUsage(false);
        return mem;
    }
};

class UT_OptionDict :
    public UT_OptionEntryImpl<UT_OptionsHolder, UT_OPTION_DICT>
{
public:
    typedef UT_OptionEntryImpl<UT_OptionsHolder, UT_OPTION_DICT> Base;

    UT_OptionDict(const UT_OptionsHolder &value) : Base(value) {}

    int64 getMemoryUsage(bool inclusive) const override
    {
        int64 mem = inclusive ? sizeof(*this) : 0;
        mem += myValue.getMemoryUsage(false);
        return mem;
    }
};

class UT_OptionInt64Array :
    public UT_OptionEntryImpl<UT_Int64Array, UT_OPTION_INTARRAY>
{
public:
    typedef UT_OptionEntryImpl<UT_Int64Array, UT_OPTION_INTARRAY> Base;

    UT_OptionInt64Array(const UT_Int64Array &value)
        : Base(value) {}
    UT_OptionInt64Array(const UT_Array<int64> &value)
        : Base(UT_Int64Array())
    {
        myValue = value;
    }
    UT_OptionInt64Array(const UT_Array<int32> &value)
        : Base(UT_Int64Array())
    {
        myValue.setSizeNoInit(value.entries());
        for (exint i = 0; i < value.entries(); ++i)
            myValue(i) = value(i);
    }

    void fetchValue(UT_Int64Array &value) const { value = myValue; }
    void fetchValue(UT_IntArray &value) const
    {
        value.setSizeNoInit(myValue.entries());
        for (exint i = 0; i < myValue.entries(); ++i)
            value(i) = myValue(i);
    }

    int64 getMemoryUsage(bool inclusive) const override
    {
        int64 mem = inclusive ? sizeof(*this) : 0;
        mem += myValue.getMemoryUsage(false);
        return mem;
    }
};

class UT_OptionFpreal64Array :
    public UT_OptionEntryImpl<UT_Fpreal64Array, UT_OPTION_FPREALARRAY>
{
public:
    typedef UT_OptionEntryImpl<UT_Fpreal64Array, UT_OPTION_FPREALARRAY> Base;

    UT_OptionFpreal64Array(const UT_Fpreal64Array &value)
        : Base(value) {}
    UT_OptionFpreal64Array(const UT_Array<fpreal64> &value)
        : Base(UT_Fpreal64Array())
    {
        myValue = value;
    }
    UT_OptionFpreal64Array(const UT_Array<fpreal32> &value)
        : Base(UT_Fpreal64Array())
    {
        myValue.setSizeNoInit(value.entries());
        for (exint i = 0; i < value.entries(); ++i)
            myValue(i) = value(i);
    }

    void fetchValue(UT_Fpreal64Array &value) const { value = myValue; }
    void fetchValue(UT_Fpreal32Array &value) const
    {
        value.setSizeNoInit(myValue.entries());
        for (exint i = 0; i < myValue.entries(); ++i)
            value(i) = myValue(i);
    }

    int64 getMemoryUsage(bool inclusive) const override
    {
        int64 mem = inclusive ? sizeof(*this) : 0;
        mem += myValue.getMemoryUsage(false);
        return mem;
    }
};

class UT_OptionStringArray :
    public UT_OptionEntryImpl<UT_StringArray, UT_OPTION_STRINGARRAY>
{
public:
    typedef UT_OptionEntryImpl<UT_StringArray, UT_OPTION_STRINGARRAY> Base;

    UT_OptionStringArray(const UT_StringArray &value) : Base(value) {}
    UT_OptionStringArray(const UT_Array<UT_StringHolder> &value)
        : Base(UT_StringArray())
    {
        myValue.setSize(value.entries());
        for (exint i = 0; i < value.entries(); ++i)
            myValue(i) = value(i);
    }

    int64         getMemoryUsage(bool inclusive) const override
    {
        int64 mem = inclusive ? sizeof(*this) : 0;
        mem += myValue.getMemoryUsage(false);
        return mem;
    }
};

class UT_OptionDictArray :
    public UT_OptionEntryImpl<UT_Array<UT_OptionsHolder>, UT_OPTION_DICTARRAY>
{
public:
    typedef UT_OptionEntryImpl<UT_Array<UT_OptionsHolder>, UT_OPTION_DICTARRAY> Base;

    UT_OptionDictArray(const UT_Array<UT_OptionsHolder> &value) : Base(value) {}
    int64 getMemoryUsage(bool inclusive) const override
    {
        int64 mem = inclusive ? sizeof(*this) : 0;
        mem += myValue.getMemoryUsage(false);
        return mem;
    }
};

// UT_OptionStringRaw is the same as UT_OptionString, but it returns a getType
// value tagging it as a "raw" string so that getPyOptionString() and
// appendPyDictionary() won't add quotes around the value.
class UT_OptionStringRaw : public UT_OptionString
{
public:
    UT_OptionStringRaw(const UT_StringHolder &value) : UT_OptionString(value) {}

    UT_OptionType getType() const override { return UT_OPTION_STRINGRAW; }
    UT_OptionEntryPtr            clone() const override
    {
        return UTmakeUnique<UT_OptionStringRaw>(myValue);
    }
};

#endif