From b0a7f5691113534c2cf771f2dd3cece5e93bc7d4 Mon Sep 17 00:00:00 2001
From: Frank Tang <ftang@chromium.org>
Date: Tue, 03 Nov 2020 23:20:37 -0800
Subject: [PATCH] Update to ICU68-1

ICU68-1 change the output skeleton format. So we need to change
resolvedOptions code for 68 migration.

Chromium roll
https://chromium-review.googlesource.com/c/chromium/src/+/2474093

Bug: v8:10945
Change-Id: I3b2c7fbe8abb22df8fa51287c498ca3245b8c55b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2477431
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70972}

(ported to work with <ICU-68.1 and rebased to qtwebengine)
---

diff --git a/src/3rdparty/chromium/v8/src/objects/js-number-format.cc b/src/3rdparty/chromium/v8/src/objects/js-number-format.cc
index 6f3d97a619..83cf021fb1 100644
--- a/src/3rdparty/chromium/v8/src/objects/js-number-format.cc
+++ b/src/3rdparty/chromium/v8/src/objects/js-number-format.cc
@@ -390,17 +390,20 @@ Handle<String> CurrencySignString(Isolate* isolate,
 Handle<String> UnitDisplayString(Isolate* isolate,
                                  const icu::UnicodeString& skeleton) {
   // Ex: skeleton as
-  // "measure-unit/length-meter .### rounding-mode-half-up unit-width-full-name"
+  // <ICU-68.1:  "measure-unit/length-meter .### rounding-mode-half-up unit-width-full-name".
+  // >=ICU-68.1: "unit/length-meter .### rounding-mode-half-up unit-width-full-name"
   if (skeleton.indexOf("unit-width-full-name") >= 0) {
     return ReadOnlyRoots(isolate).long_string_handle();
   }
   // Ex: skeleton as
-  // "measure-unit/length-meter .### rounding-mode-half-up unit-width-narrow".
+  // <ICU-68.1:  "measure-unit/length-meter .### rounding-mode-half-up unit-width-narrow".
+  // >=ICU-68.1: "unit/length-meter .### rounding-mode-half-up unit-width-narrow".
   if (skeleton.indexOf("unit-width-narrow") >= 0) {
     return ReadOnlyRoots(isolate).narrow_string_handle();
   }
   // Ex: skeleton as
-  // "measure-unit/length-foot .### rounding-mode-half-up"
+  // <ICU-68.1:  "measure-unit/length-foot .### rounding-mode-half-up"
+  // >=ICU-68.1: "unit/length-foot .### rounding-mode-half-up"
   return ReadOnlyRoots(isolate).short_string_handle();
 }
 
@@ -423,7 +426,8 @@ Notation NotationFromSkeleton(const icu::UnicodeString& skeleton) {
     return Notation::COMPACT;
   }
   // Ex: skeleton as
-  // "measure-unit/length-foot .### rounding-mode-half-up"
+  // <ICU-68.1:  "measure-unit/length-foot .### rounding-mode-half-up"
+  // >=ICU-68.1: "unit/length-foot .### rounding-mode-half-up"
   return Notation::STANDARD;
 }
 
@@ -563,14 +567,23 @@ namespace {
 
 // Ex: percent .### rounding-mode-half-up
 // Special case for "percent"
-// Ex: "measure-unit/length-kilometer per-measure-unit/duration-hour .###
-// rounding-mode-half-up" should return "kilometer-per-unit".
-// Ex: "measure-unit/duration-year .### rounding-mode-half-up" should return
-// "year".
+// <ICU-68.1:
+//   Ex: "measure-unit/length-kilometer per-measure-unit/duration-hour .###
+//   rounding-mode-half-up" should return "kilometer-per-unit".
+//   Ex: "measure-unit/duration-year .### rounding-mode-half-up" should return
+// >=ICU-68.1:
+//   Ex: "unit/milliliter-per-acre .### rounding-mode-half-up"
+//   should return "milliliter-per-acre".
+//   Ex: "unit/year .### rounding-mode-half-up" should return
+//   "year".
 std::string UnitFromSkeleton(const icu::UnicodeString& skeleton) {
   std::string str;
   str = skeleton.toUTF8String<std::string>(str);
+#if U_ICU_VERSION_MAJOR_NUM < 68
   std::string search("measure-unit/");
+#else
+  std::string search("unit/");
+#endif
   size_t begin = str.find(search);
   if (begin == str.npos) {
     // Special case for "percent".
@@ -579,20 +592,41 @@ std::string UnitFromSkeleton(const icu::UnicodeString& skeleton) {
     }
     return "";
   }
+#if U_ICU_VERSION_MAJOR_NUM < 68
   // Skip the type (ex: "length").
   // "measure-unit/length-kilometer per-measure-unit/duration-hour"
   //                     b
   begin = str.find("-", begin + search.size());
+#else
+  // Ex:
+  // "unit/acre .### rounding-mode-half-up"
+  //       b
+  // Ex:
+  // "unit/milliliter-per-acre .### rounding-mode-half-up"
+  //       b
+  begin += search.size();
+#endif
   if (begin == str.npos) {
     return "";
   }
+#if U_ICU_VERSION_MAJOR_NUM < 68
   begin++;  // Skip the '-'.
+#endif
   // Find the end of the subtype.
   size_t end = str.find(" ", begin);
-  // "measure-unit/length-kilometer per-measure-unit/duration-hour"
-  //                      b        e
+  // <ICU-68.1:
+  //   "measure-unit/length-kilometer per-measure-unit/duration-hour"
+  //                        b        e
+  // >=ICU-68.1:
+  //   Ex:
+  //   "unit/acre .### rounding-mode-half-up"
+  //         b   e
+  //   Ex:
+  //   "unit/milliliter-per-acre .### rounding-mode-half-up"
+  //         b                  e
   if (end == str.npos) {
     end = str.size();
+#if U_ICU_VERSION_MAJOR_NUM < 68
     return str.substr(begin, end - begin);
   }
   // "measure-unit/length-kilometer per-measure-unit/duration-hour"
@@ -626,18 +660,37 @@ std::string UnitFromSkeleton(const icu::UnicodeString& skeleton) {
   // "measure-unit/length-kilometer per-measure-unit/duration-hour"
   //                      [result ]                           b   e
   return result + "-per-" + str.substr(begin, end - begin);
+#else
+  }
+  return str.substr(begin, end - begin);
+#endif
 }
 
 Style StyleFromSkeleton(const icu::UnicodeString& skeleton) {
   if (skeleton.indexOf("currency/") >= 0) {
     return Style::CURRENCY;
   }
+#if U_ICU_VERSION_MAJOR_NUM < 68
   if (skeleton.indexOf("measure-unit/") >= 0) {
+#else
+  if (skeleton.indexOf("unit/") >= 0) {
+#endif
     return Style::UNIT;
   }
+#if U_ICU_VERSION_MAJOR_NUM < 68
   if (skeleton.indexOf("percent ") >= 0) {
     return Style::PERCENT;
   }
+#else
+  if (skeleton.indexOf("percent") >= 0) {
+    // percent precision-integer rounding-mode-half-up scale/100
+    if (skeleton.indexOf("scale/100") >= 0) {
+      return Style::PERCENT;
+    } else {
+      return Style::UNIT;
+    }
+  }
+#endif
   return Style::DECIMAL;
 }