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author | Karl Berry <karl@freefriends.org> | 2021-02-25 19:22:25 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2021-02-25 19:22:25 +0000 |
commit | ad547a6b5986815fda458221149728d9d9ab1d87 (patch) | |
tree | 16296910eb3eca724371474ea9aea3994dc69614 /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-dispatch.hh | |
parent | 947b43de3dd21d58ccc2ffadefc4441ea1c2a813 (diff) |
restore Build,TODO from r57911
git-svn-id: svn://tug.org/texlive/trunk@57915 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-dispatch.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-dispatch.hh | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-dispatch.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-dispatch.hh new file mode 100644 index 00000000000..7eace86e546 --- /dev/null +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-dispatch.hh @@ -0,0 +1,61 @@ +/* + * 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 +{ + hb_dispatch_context_t () : debug_depth (0) {} + 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 (), hb_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; +}; + + +#endif /* HB_DISPATCH_HH */ |