src/tint/lang/wgsl/ast/transform/add_block_attribute.h

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#ifndef SRC_TINT_LANG_WGSL_AST_TRANSFORM_ADD_BLOCK_ATTRIBUTE_H_
#define SRC_TINT_LANG_WGSL_AST_TRANSFORM_ADD_BLOCK_ATTRIBUTE_H_

#include <string>

#include "src/tint/lang/wgsl/ast/internal_attribute.h"
#include "src/tint/lang/wgsl/ast/transform/transform.h"

namespace tint::ast::transform {

/// AddBlockAttribute is a transform that wrap the store type of a buffer into a struct if possible,
/// then adds an `@internal(block)` attribute to the wrapper struct.
class AddBlockAttribute final : public Castable<AddBlockAttribute, Transform> {
  public:
    /// BlockAttribute is an InternalAttribute that is used to decorate a
    // structure that is used as a buffer in SPIR-V or GLSL.
    class BlockAttribute final : public Castable<BlockAttribute, InternalAttribute> {
      public:
        /// Constructor
        /// @param generation_id the identifier of the program that owns this node
        /// @param nid the unique node identifier
        BlockAttribute(GenerationID generation_id, NodeID nid);
        /// Destructor
        ~BlockAttribute() override;

        /// @return a short description of the internal attribute which will be
        /// displayed as `@internal(<name>)`
        std::string InternalName() const override;

        /// Performs a deep clone of this object using the CloneContext `ctx`.
        /// @param ctx the clone context
        /// @return the newly cloned object
        const BlockAttribute* Clone(CloneContext& ctx) const override;
    };

    /// Constructor
    AddBlockAttribute();

    /// Destructor
    ~AddBlockAttribute() override;

    /// @copydoc Transform::Apply
    ApplyResult Apply(const Program& program,
                      const DataMap& inputs,
                      DataMap& outputs) const override;
};

}  // namespace tint::ast::transform

#endif  // SRC_TINT_LANG_WGSL_AST_TRANSFORM_ADD_BLOCK_ATTRIBUTE_H_