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// Copyright 2020 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_READER_SPIRV_ENUM_CONVERTER_H_
#define SRC_READER_SPIRV_ENUM_CONVERTER_H_
#include "spirv/unified1/spirv.h"
#include "src/ast/builtin.h"
#include "src/ast/pipeline_stage.h"
#include "src/ast/storage_class.h"
#include "src/reader/spirv/fail_stream.h"
#include "src/sem/storage_texture_type.h"
namespace tint {
namespace reader {
namespace spirv {
/// A converter from SPIR-V enums to Tint AST enums.
class EnumConverter {
public:
/// Creates a new enum converter.
/// @param fail_stream the error reporting stream.
explicit EnumConverter(const FailStream& fail_stream);
/// Destructor
~EnumConverter();
/// Converts a SPIR-V execution model to a Tint pipeline stage.
/// On failure, logs an error and returns kNone
/// @param model the SPIR-V entry point execution model
/// @returns a Tint AST pipeline stage
ast::PipelineStage ToPipelineStage(SpvExecutionModel model);
/// Converts a SPIR-V storage class to a Tint storage class.
/// On failure, logs an error and returns kNone
/// @param sc the SPIR-V storage class
/// @returns a Tint AST storage class
ast::StorageClass ToStorageClass(const SpvStorageClass sc);
/// Converts a SPIR-V Builtin value a Tint Builtin.
/// On failure, logs an error and returns kNone
/// @param b the SPIR-V builtin
/// @returns a Tint AST builtin
ast::Builtin ToBuiltin(SpvBuiltIn b);
/// Converts a possibly arrayed SPIR-V Dim to a Tint texture dimension.
/// On failure, logs an error and returns kNone
/// @param dim the SPIR-V Dim value
/// @param arrayed true if the texture is arrayed
/// @returns a Tint AST texture dimension
ast::TextureDimension ToDim(SpvDim dim, bool arrayed);
/// Converts a SPIR-V Image Format to a TexelFormat
/// On failure, logs an error and returns kNone
/// @param fmt the SPIR-V format
/// @returns a Tint AST format
ast::TexelFormat ToTexelFormat(SpvImageFormat fmt);
private:
/// Registers a failure and returns a stream for log diagnostics.
/// @returns a failure stream
FailStream Fail() { return fail_stream_.Fail(); }
FailStream fail_stream_;
};
} // namespace spirv
} // namespace reader
} // namespace tint
#endif // SRC_READER_SPIRV_ENUM_CONVERTER_H_