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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_TINT_TRANSFORM_ADD_BLOCK_ATTRIBUTE_H_
#define SRC_TINT_TRANSFORM_ADD_BLOCK_ATTRIBUTE_H_
#include <string>
#include "src/tint/ast/internal_attribute.h"
#include "src/tint/transform/transform.h"
namespace tint::transform {
/// AddBlockAttribute is a transform that adds an
/// `@internal(block)` attribute to any structure that is used as the
/// store type of a buffer. If that structure is nested inside another structure
/// or an array, then it is wrapped inside another structure which gets the
/// `@internal(block)` attribute instead.
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, ast::InternalAttribute> {
public:
/// Constructor
/// @param program_id the identifier of the program that owns this node
/// @param nid the unique node identifier
BlockAttribute(ProgramID program_id, ast::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;
protected:
/// Runs the transform using the CloneContext built for transforming a
/// program. Run() is responsible for calling Clone() on the CloneContext.
/// @param ctx the CloneContext primed with the input program and
/// ProgramBuilder
/// @param inputs optional extra transform-specific input data
/// @param outputs optional extra transform-specific output data
void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) const override;
};
} // namespace tint::transform
#endif // SRC_TINT_TRANSFORM_ADD_BLOCK_ATTRIBUTE_H_