kc3-lang/libxkbcommon/src/messages-codes.h.jinja

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• Hash : dc63e5f8
  Author :
  Date : 2025-07-07T12:28:24
  

  Ensure config.h is always included first
  
  While `config.h` may not be necessary in every file, it ensures
  consistency and makes code refactoring safer.
  

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• src/messages-codes.h.jinja

• // NOTE: This file has been generated automatically by “{{script}}”.
  //       Do not edit manually!
  #pragma once
  
  #include "config.h"
  
  #include <stdint.h>
  
  /*
   * Macro sorcery: PREPEND_MESSAGE_ID enables the log functions to format messages
   * with the message ID only if the ID is not 0 (XKB_LOG_MESSAGE_NO_ID).
   * This avoid checking the ID value at run time.
   *
   * The trick resides in CHECK_ID:
   * • CHECK_ID(0) expands to:
   *   ‣ SECOND(MATCH0, WITH_ID, unused)
   *   ‣ SECOND(unused,WITHOUT_ID, WITH_ID, unused)
   *   ‣ WITHOUT_ID
   * • CHECK_ID(123) expands to:
   *   ‣ SECOND(MATCH123, WITH_ID, unused)
   *   ‣ WITH_ID
  */
  #define EXPAND(...)              __VA_ARGS__ /* needed for MSVC compatibility */
  
  #define JOIN_EXPAND(a, b)        a##b
  #define JOIN(a, b)               JOIN_EXPAND(a, b)
  
  #define SECOND_EXPAND(a, b, ...) b
  #define SECOND(...)              EXPAND(SECOND_EXPAND(__VA_ARGS__))
  
  #define MATCH0                   unused,WITHOUT_ID
  #define CHECK_ID(value)          SECOND(JOIN(MATCH, value), WITH_ID, unused)
  
  #define FORMAT_MESSAGE_WITHOUT_ID(id, fmt) fmt
  #define FORMAT_MESSAGE_WITH_ID(id, fmt)    "[XKB-%03d] " fmt, id
  #define PREPEND_MESSAGE_ID(id, fmt) JOIN(FORMAT_MESSAGE_, CHECK_ID(id))(id, fmt)
  
  /**
   * Special case when no message identifier is defined.
   */
  #define XKB_LOG_MESSAGE_NO_ID 0
  
  /**
   * @name Codes of the log messages
   */
  enum xkb_message_code {
      _XKB_LOG_MESSAGE_MIN_CODE = {{ entries[0].code }},
      {% for entry in entries %}
      /** {{ entry.description }} */
      {{ entry.message_code_constant }} = {{ entry.code }},
      {% endfor %}
      _XKB_LOG_MESSAGE_MAX_CODE = {{ entries[-1].code }}
  };
  
  typedef uint32_t xkb_message_code_t;
  

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