// Copyright 2023 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.

#include "src/tint/lang/spirv/writer/raise/raise.h"

#include <utility>

#include "src/tint/lang/core/ir/transform/add_empty_entry_point.h"
#include "src/tint/lang/core/ir/transform/bgra8unorm_polyfill.h"
#include "src/tint/lang/core/ir/transform/binary_polyfill.h"
#include "src/tint/lang/core/ir/transform/block_decorated_structs.h"
#include "src/tint/lang/core/ir/transform/builtin_polyfill.h"
#include "src/tint/lang/core/ir/transform/demote_to_helper.h"
#include "src/tint/lang/core/ir/transform/multiplanar_external_texture.h"
#include "src/tint/lang/core/ir/transform/robustness.h"
#include "src/tint/lang/core/ir/transform/std140.h"
#include "src/tint/lang/spirv/writer/raise/builtin_polyfill.h"
#include "src/tint/lang/spirv/writer/raise/expand_implicit_splats.h"
#include "src/tint/lang/spirv/writer/raise/handle_matrix_arithmetic.h"
#include "src/tint/lang/spirv/writer/raise/merge_return.h"
#include "src/tint/lang/spirv/writer/raise/shader_io.h"
#include "src/tint/lang/spirv/writer/raise/var_for_dynamic_index.h"

namespace tint::spirv::writer::raise {

Result<SuccessType, std::string> Raise(core::ir::Module* module, const Options& options) {
#define RUN_TRANSFORM(name, ...)         \
    do {                                 \
        auto result = name(__VA_ARGS__); \
        if (!result) {                   \
            return result;               \
        }                                \
    } while (false)

    core::ir::transform::BinaryPolyfillConfig binary_polyfills;
    binary_polyfills.bitshift_modulo = true;
    binary_polyfills.int_div_mod = true;
    RUN_TRANSFORM(core::ir::transform::BinaryPolyfill, module, binary_polyfills);

    core::ir::transform::BuiltinPolyfillConfig core_polyfills;
    core_polyfills.count_leading_zeros = true;
    core_polyfills.count_trailing_zeros = true;
    core_polyfills.first_leading_bit = true;
    core_polyfills.first_trailing_bit = true;
    core_polyfills.saturate = true;
    core_polyfills.texture_sample_base_clamp_to_edge_2d_f32 = true;
    RUN_TRANSFORM(core::ir::transform::BuiltinPolyfill, module, core_polyfills);

    if (!options.disable_robustness) {
        core::ir::transform::RobustnessConfig config;
        if (options.disable_image_robustness) {
            config.clamp_texture = false;
        }
        config.disable_runtime_sized_array_index_clamping =
            options.disable_runtime_sized_array_index_clamping;
        RUN_TRANSFORM(core::ir::transform::Robustness, module, config);
    }

    RUN_TRANSFORM(core::ir::transform::MultiplanarExternalTexture, module,
                  options.external_texture_options);

    RUN_TRANSFORM(core::ir::transform::AddEmptyEntryPoint, module);
    RUN_TRANSFORM(core::ir::transform::Bgra8UnormPolyfill, module);
    RUN_TRANSFORM(core::ir::transform::BlockDecoratedStructs, module);
    RUN_TRANSFORM(BuiltinPolyfill, module);
    RUN_TRANSFORM(core::ir::transform::DemoteToHelper, module);
    RUN_TRANSFORM(ExpandImplicitSplats, module);
    RUN_TRANSFORM(HandleMatrixArithmetic, module);
    RUN_TRANSFORM(MergeReturn, module);
    RUN_TRANSFORM(ShaderIO, module,
                  ShaderIOConfig{options.clamp_frag_depth, options.emit_vertex_point_size});
    RUN_TRANSFORM(core::ir::transform::Std140, module);
    RUN_TRANSFORM(VarForDynamicIndex, module);

    return Success;
}

}  // namespace tint::spirv::writer::raise