containerSchema.h

//
// Copyright 2022 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
 
#ifndef PXR_IMAGING_HD_CONTAINER_SCHEMA_H
#define PXR_IMAGING_HD_CONTAINER_SCHEMA_H
 
#include "pxr/imaging/hd/schema.h"
 
PXR_NAMESPACE_OPEN_SCOPE
 
class HdContainerSchema : public HdSchema
{
public:
 
    HdContainerSchema(HdContainerDataSourceHandle container)
     : HdSchema(std::move(container))
    {}
 
    HD_API
    TfTokenVector GetNames() const;
 
    HD_API
    static HdContainerDataSourceHandle
    BuildRetained(
        size_t count,
        const TfToken *names,
        const HdDataSourceBaseHandle *values);
};
 
template<typename T>
class HdContainerOfTypedSampledDataSourcesSchema : public HdContainerSchema
{
public:
 
    HdContainerOfTypedSampledDataSourcesSchema(
        HdContainerDataSourceHandle container)
     : HdContainerSchema(std::move(container))
    {}
 
    typename T::Handle Get(const TfToken &name) const {
        return _GetTypedDataSource<T>(name);
    }
};
 
template<typename T>
using HdTypedContainerSchema = HdContainerOfTypedSampledDataSourcesSchema<T>;
 
template<typename Schema>
class HdContainerOfSchemasSchema : public HdContainerSchema
{
public:
 
    HdContainerOfSchemasSchema(HdContainerDataSourceHandle container)
     : HdContainerSchema(std::move(container))
    {}
 
    Schema Get(const TfToken &name) const {
        using DataSource = typename Schema::UnderlyingDataSource;
        return Schema(_GetTypedDataSource<DataSource>(name));
    }
};
 
template<typename T>
using HdSchemaBasedContainerSchema = HdContainerOfSchemasSchema<T>;
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif