nodejs-electron/harfbuzz-replace-HbScopedPointer.patch

From 5fcaeafcab5460ea65e4a7bdee6589002adf74d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20R=C3=B6ttsches?= <drott@chromium.org>
Date: Mon, 13 Feb 2023 13:26:16 +0000
Subject: [PATCH] Use hb::unique_ptr instead of custom HbScopedPointer
MIME-Version: 1.0
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This was an earlier local RAII implementation that we no longer need now
that HarfBuzz provides helpers for this.

Change-Id: Idc47ce2717c75556acb03e2ccccb50ec87ed3cca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4239980
Reviewed-by: Munira Tursunova <moonira@google.com>
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1104453}
---
 .../platform/fonts/shaping/harfbuzz_shaper.cc | 39 ++++---------------
 1 file changed, 7 insertions(+), 32 deletions(-)

diff --git a/third_party/blink/renderer/platform/fonts/shaping/harfbuzz_shaper.cc b/third_party/blink/renderer/platform/fonts/shaping/harfbuzz_shaper.cc
index c165a1703395a..dc1377a90a9f7 100644
--- a/third_party/blink/renderer/platform/fonts/shaping/harfbuzz_shaper.cc
+++ b/third_party/blink/renderer/platform/fonts/shaping/harfbuzz_shaper.cc
@@ -35,6 +35,7 @@
 #include <unicode/uchar.h>
 #include <unicode/uscript.h>
 #include <algorithm>
+#include <hb-cplusplus.hh>
 #include <memory>
 #include <utility>
 
@@ -194,33 +195,6 @@ struct ReshapeQueueItem {
       : action_(action), start_index_(start), num_characters_(num) {}
 };
 
-template <typename T>
-class HarfBuzzScopedPtr {
-  STACK_ALLOCATED();
-
- public:
-  typedef void (*DestroyFunction)(T*);
-
-  HarfBuzzScopedPtr(T* ptr, DestroyFunction destroy)
-      : ptr_(ptr), destroy_(destroy) {
-    DCHECK(destroy_);
-  }
-  HarfBuzzScopedPtr(const HarfBuzzScopedPtr&) = delete;
-  HarfBuzzScopedPtr& operator=(const HarfBuzzScopedPtr&) = delete;
-  ~HarfBuzzScopedPtr() {
-    if (ptr_)
-      (*destroy_)(ptr_);
-  }
-
-  T* Get() const{ return ptr_; }
-  operator T *() const {return ptr_;}
-  void Set(T* ptr) { ptr_ = ptr; }
-
- private:
-  T* ptr_;
-  DestroyFunction destroy_;
-};
-
 //
 // Represents a context while shaping a range.
 //
@@ -239,7 +214,7 @@ struct RangeContext {
         text_direction(direction),
         start(start),
         end(end),
-        buffer(hb_buffer_create(), hb_buffer_destroy),
+        buffer(hb_buffer_create()),
         options(options) {
     DCHECK_GE(end, start);
     font_features.Initialize(font->GetFontDescription());
@@ -249,7 +224,7 @@ struct RangeContext {
   const TextDirection text_direction;
   const unsigned start;
   const unsigned end;
-  const HarfBuzzScopedPtr<hb_buffer_t> buffer;
+  const hb::unique_ptr<hb_buffer_t> buffer;
   FontFeatures font_features;
   Deque<ReshapeQueueItem> reshape_queue;
   const ShapeOptions options;
@@ -1032,7 +1007,7 @@ void HarfBuzzShaper::GetGlyphData(const
                                   UScriptCode script,
                                   bool is_horizontal,
                                   GlyphDataList& glyphs) {
-  HarfBuzzScopedPtr<hb_buffer_t> hb_buffer(hb_buffer_create(), hb_buffer_destroy);
+  hb::unique_ptr<hb_buffer_t> hb_buffer(hb_buffer_create());
   hb_buffer_set_language(hb_buffer, locale.HarfbuzzLanguage());
   hb_buffer_set_script(hb_buffer, ICUScriptToHBScript(script));
   hb_buffer_set_direction(hb_buffer,