// Copyright (c) 2017 Google Inc.

//

// 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 "source/extensions.h"

#include <cassert>

#include <sstream>

#include <string>

#include "source/binary.h"

#include "source/table2.h"

namespace spvtools {

std::string GetExtensionString(const spv_parsed_instruction_t* inst) {

  if ((inst->opcode != static_cast<uint16_t>(spv::Op::OpExtension)) &&

      (inst->opcode !=

       static_cast<uint16_t>(spv::Op::OpConditionalExtensionINTEL))) {

    return "ERROR_not_op_extension";

  }

  const bool is_conditional =

      inst->opcode ==

      static_cast<uint16_t>(spv::Op::OpConditionalExtensionINTEL);

  assert(inst->num_operands == (is_conditional ? 2 : 1));

  const uint16_t op_i = is_conditional ? 1 : 0;

  const auto& operand = inst->operands[op_i];

  assert(operand.type == SPV_OPERAND_TYPE_LITERAL_STRING);

  assert(inst->num_words > operand.offset);

  (void)operand; /* No unused variables in release builds. */

  return spvDecodeLiteralStringOperand(*inst, op_i);

}

std::string ExtensionSetToString(const ExtensionSet& extensions) {

  std::stringstream ss;

  for (auto extension : extensions) {

    ss << ExtensionToString(extension) << " ";

  }

  return ss.str();

}

}  // namespace spvtools