kc3-lang/harfbuzz/src/hb-dispatch.hh

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• Hash : 6d555ce8
  Author :
  Date : 2021-11-02T00:18:22
  

  [meta] Use std::forward instead of hb_forward()
  

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• src/hb-dispatch.hh

• /*
   * Copyright © 2007,2008,2009,2010  Red Hat, Inc.
   * Copyright © 2012,2018  Google, Inc.
   *
   *  This is part of HarfBuzz, a text shaping library.
   *
   * Permission is hereby granted, without written agreement and without
   * license or royalty fees, to use, copy, modify, and distribute this
   * software and its documentation for any purpose, provided that the
   * above copyright notice and the following two paragraphs appear in
   * all copies of this software.
   *
   * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
   * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
   * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
   * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
   * DAMAGE.
   *
   * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
   * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
   * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
   *
   * Red Hat Author(s): Behdad Esfahbod
   * Google Author(s): Behdad Esfahbod
   */
  
  #ifndef HB_DISPATCH_HH
  #define HB_DISPATCH_HH
  
  #include "hb.hh"
  
  /*
   * Dispatch
   */
  
  template <typename Context, typename Return=hb_empty_t, unsigned int MaxDebugDepth=0>
  struct hb_dispatch_context_t
  {
    private:
    /* https://en.wikipedia.org/wiki/Curiously_recurring_template_pattern */
    const Context* thiz () const { return static_cast<const Context *> (this); }
  	Context* thiz ()       { return static_cast<      Context *> (this); }
    public:
    const char *get_name () { return "UNKNOWN"; }
    static constexpr unsigned max_debug_depth = MaxDebugDepth;
    typedef Return return_t;
    template <typename T, typename F>
    bool may_dispatch (const T *obj HB_UNUSED, const F *format HB_UNUSED) { return true; }
    template <typename T, typename ...Ts>
    return_t dispatch (const T &obj, Ts&&... ds)
    { return obj.dispatch (thiz (), std::forward<Ts> (ds)...); }
    static return_t no_dispatch_return_value () { return Context::default_return_value (); }
    static bool stop_sublookup_iteration (const return_t r HB_UNUSED) { return false; }
    unsigned debug_depth = 0;
  };
  
  
  #endif /* HB_DISPATCH_HH */
  

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