Introduce toDynamic conversion for AttributedString class

Summary: This diff introduces a way to convert AttributedString object to dynamic objects

Reviewed By: shergin

Differential Revision: D9801438

fbshipit-source-id: b762f54917ae90bf53c7f9d07f63b876d1265ece

ReactCommon/fabric/attributedstring/conversions.h

@@ -8,9 +8,10 @@
 #pragma once
 
 #include <fabric/attributedstring/conversions.h>
+#include <fabric/attributedstring/primitives.h>
+#include <fabric/attributedstring/AttributedString.h>
 #include <fabric/attributedstring/ParagraphAttributes.h>
 #include <fabric/attributedstring/TextAttributes.h>
-#include <fabric/attributedstring/primitives.h>
 #include <fabric/core/conversions.h>
 #include <fabric/graphics/conversions.h>
 #include <fabric/graphics/Geometry.h>
@@ -276,5 +277,19 @@ inline folly::dynamic toDynamic(const TextAttributes &textAttributes) {
   return _textAttributes;
 }
 
+inline folly::dynamic toDynamic(const AttributedString &attributedString) {
+  auto value = folly::dynamic::object();
+  auto fragments = folly::dynamic::array();
+  for (auto fragment : attributedString.getFragments()) {
+    folly::dynamic dynamicFragment = folly::dynamic::object();
+    dynamicFragment["string"] = fragment.string;
+    dynamicFragment["textAttributes"] = toDynamic(fragment.textAttributes);
+    fragments.push_back(dynamicFragment);
+  }
+  value("fragments", fragments);
+  value("string", attributedString.getString());
+  return value;
+}
+
 } // namespace react
 } // namespace facebook

ReactCommon/fabric/attributedstring/tests/AttributedStringTest.cpp

@@ -7,8 +7,40 @@
 
 #include <memory>
 
+#include <fabric/attributedstring/TextAttributes.h>
+#include <fabric/attributedstring/conversions.h>
+#include <fabric/attributedstring/primitives.h>
+#include <fabric/graphics/conversions.h>
 #include <gtest/gtest.h>
+#include <assert.h>
+#include <string>
+#include <iostream>
+namespace facebook {
+namespace react {
 
 TEST(AttributedStringTest, testSomething) {
-  // TODO
+  auto attString = new AttributedString();
+  auto fragment = new AttributedString::Fragment();
+  fragment->string = "test";
+
+  auto text = new TextAttributes();
+  text->foregroundColor = {colorFromComponents({100/255.0, 153/255.0, 200/255.0, 1.0})};
+  text->opacity = 0.5;
+  text->fontStyle = FontStyle::Italic;
+  text->fontWeight = FontWeight::Thin;
+  text->fontVariant = FontVariant::TabularNums;
+  fragment->textAttributes = *text;
+
+  attString->prependFragment(*fragment);
+
+  auto result = toDynamic(*attString);
+  assert(result["string"] == fragment->string);
+  auto textAttribute = result["fragments"][0]["textAttributes"];
+  assert(textAttribute["foregroundColor"] == toDynamic(text->foregroundColor));
+  assert(textAttribute["opacity"] == text->opacity);
+  assert(textAttribute["fontStyle"] == toString(*text->fontStyle));
+  assert(textAttribute["fontWeight"] == toString(*text->fontWeight));
+}
+
+}
 }