shaderMetadataHelpers.h

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//
// Copyright 2018 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
 
#ifndef PXR_USD_SDR_SHADER_METADATA_HELPERS_H
#define PXR_USD_SDR_SHADER_METADATA_HELPERS_H
 
 
#include "pxr/pxr.h"
#include "pxr/usd/sdr/api.h"
#include "pxr/base/tf/token.h"
#include "pxr/usd/sdr/declare.h"
 
#include <limits>
 
PXR_NAMESPACE_OPEN_SCOPE
 
namespace ShaderMetadataHelpers
{
    SDR_API
    bool
    IsTruthy(const TfToken& key, const NdrTokenMap& metadata);
 
    SDR_API
    std::string
    StringVal(const TfToken& key, const NdrTokenMap& metadata,
              const std::string& defaultValue = std::string());
 
    SDR_API
    TfToken
    TokenVal(const TfToken& key, const NdrTokenMap& metadata,
             const TfToken& defaultValue = TfToken());
 
    SDR_API
    int
    IntVal(const TfToken& key, const NdrTokenMap& metadata,
           int defaultValue = std::numeric_limits<int>::max());
 
    SDR_API
    NdrStringVec
    StringVecVal(const TfToken& key, const NdrTokenMap& metadata);
 
    SDR_API
    NdrTokenVec
    TokenVecVal(const TfToken& key, const NdrTokenMap& metadata);
 
    SDR_API
    NdrOptionVec
    OptionVecVal(const std::string& optionStr);
 
    SDR_API
    std::string
    CreateStringFromStringVec(const NdrStringVec& stringVec);
 
    SDR_API
    bool
    IsPropertyAnAssetIdentifier(const NdrTokenMap& metadata);
 
    SDR_API
    bool
    IsPropertyATerminal(const NdrTokenMap& metadata);
 
    // if it's a valid role as defined by SdrPropertyRole tokens.
    SDR_API
    TfToken
    GetRoleFromMetadata(const NdrTokenMap& metadata);
}
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif // PXR_USD_SDR_SHADER_METADATA_HELPERS_H