nested_tokenization.h

// Copyright 2023 The Pigweed 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
//
//     https://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.
 
// This file provides common utilities across all token types.
#pragma once
 
#include <inttypes.h>
 
#include "pw_preprocessor/arguments.h"
#include "pw_tokenizer/config.h"
 
#define PW_TOKENIZER_NESTED_PREFIX PW_TOKENIZER_NESTED_PREFIX_STR[0]
 
#define PW_TOKEN_FMT(...) PW_DELEGATE_BY_ARG_COUNT(_PW_TOKEN_FMT_, __VA_ARGS__)
 
// Case: no argument (no specified domain)
#define _PW_TOKEN_FMT_0() PW_TOKENIZER_NESTED_PREFIX_STR "#%08" PRIx32
 
// Case: one argument (specified domain)
#define _PW_TOKEN_FMT_1(domain_value) \
  PW_TOKENIZER_NESTED_PREFIX_STR      \
  "{" domain_value                    \
  "}"                                 \
  "#%08" PRIx32
 
#define PW_NESTED_TOKEN_FMT(...) \
  PW_DELEGATE_BY_ARG_COUNT(_PW_NESTED_TOKEN_FMT_, __VA_ARGS__)
 
// Case: no argument (no specified domain)
#define _PW_NESTED_TOKEN_FMT_0()                                    \
  PW_TOKENIZER_NESTED_PREFIX_STR "{" PW_TOKENIZER_NESTED_PREFIX_STR \
                                 "#%" PRIx32 "}#%08" PRIx32
 
// Case: one argument (specified domain)
#define _PW_NESTED_TOKEN_FMT_1(domain_value)                        \
  PW_TOKENIZER_NESTED_PREFIX_STR "{" PW_TOKENIZER_NESTED_PREFIX_STR \
                                 "{" domain_value "}#%" PRIx32 "}#%08" PRIx32