Address API feedback

Finish rename in comments for s/EmojiMetadata/TypefaceEmojiSpan/

Bug: b/266007895
Fixes: N/A (docs)
Change-Id: I2f1f62035de0cd5da9255f1cf536bd407b446959

diff --git a/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiCompat.java b/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiCompat.java
index 6426ad5..9604796 100644
--- a/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiCompat.java
+++ b/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiCompat.java

@@ -1189,13 +1189,14 @@
         /**
          * Create EmojiSpan instance.
          *
-         * @param metadata EmojiMetadata instance, which can draw the emoji onto a Canvas.
+         * @param rasterizer TypefaceEmojiRasterizer instance, which can draw the emoji onto a
+         *                   Canvas.
          *
-         * @return EmojiSpan instance that can use EmojiMetadata to draw emoji.
+         * @return EmojiSpan instance that can use TypefaceEmojiRasterizer to draw emoji.
          */
         @RequiresApi(19)
         @NonNull
-        EmojiSpan createSpan(@NonNull TypefaceEmojiRasterizer metadata);
+        EmojiSpan createSpan(@NonNull TypefaceEmojiRasterizer rasterizer);
     }
 
 
@@ -1208,15 +1209,16 @@
         /**
          * Returns a TypefaceEmojiSpan.
          *
-         * @param metadata EmojiMetadata instance, which can draw the emoji onto a Canvas.
+         * @param rasterizer TypefaceEmojiRasterizer instance, which can draw the emoji onto a
+         *                   Canvas.
          *
          * @return {@link TypefaceEmojiSpan}
          */
         @RequiresApi(19)
         @NonNull
         @Override
-        public EmojiSpan createSpan(@NonNull TypefaceEmojiRasterizer metadata) {
-            return new TypefaceEmojiSpan(metadata);
+        public EmojiSpan createSpan(@NonNull TypefaceEmojiRasterizer rasterizer) {
+            return new TypefaceEmojiSpan(rasterizer);
         }
     }
 

diff --git a/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiProcessor.java b/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiProcessor.java
index 50cc247..6efcd7a 100644
--- a/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiProcessor.java
+++ b/emoji2/emoji2/src/main/java/androidx/emoji2/text/EmojiProcessor.java

@@ -580,20 +580,20 @@
      * @param charSequence the CharSequence that the emoji is in
      * @param start start index of the emoji in the CharSequence
      * @param end end index of the emoji in the CharSequence
-     * @param metadata EmojiMetadata instance for the emoji
+     * @param rasterizer TypefaceEmojiRasterizer instance for the emoji
      *
      * @return {@code true} if the OS can render emoji, {@code false} otherwise
      */
     private boolean hasGlyph(final CharSequence charSequence, int start, final int end,
-            final TypefaceEmojiRasterizer metadata) {
+            final TypefaceEmojiRasterizer rasterizer) {
         // if the existence is not calculated yet
-        if (metadata.getHasGlyph() == TypefaceEmojiRasterizer.HAS_GLYPH_UNKNOWN) {
+        if (rasterizer.getHasGlyph() == TypefaceEmojiRasterizer.HAS_GLYPH_UNKNOWN) {
             final boolean hasGlyph = mGlyphChecker.hasGlyph(charSequence, start, end,
-                    metadata.getSdkAdded());
-            metadata.setHasGlyph(hasGlyph);
+                    rasterizer.getSdkAdded());
+            rasterizer.setHasGlyph(hasGlyph);
         }
 
-        return metadata.getHasGlyph() == TypefaceEmojiRasterizer.HAS_GLYPH_EXISTS;
+        return rasterizer.getHasGlyph() == TypefaceEmojiRasterizer.HAS_GLYPH_EXISTS;
     }
 
     /**

diff --git a/emoji2/emoji2/src/main/java/androidx/emoji2/text/MetadataRepo.java b/emoji2/emoji2/src/main/java/androidx/emoji2/text/MetadataRepo.java
index 50e8495..f08ae06 100644
--- a/emoji2/emoji2/src/main/java/androidx/emoji2/text/MetadataRepo.java
+++ b/emoji2/emoji2/src/main/java/androidx/emoji2/text/MetadataRepo.java

@@ -50,8 +50,9 @@
     private final @NonNull MetadataList mMetadataList;
 
     /**
-     * char presentation of all EmojiMetadata's in a single array. All emojis we have are mapped to
-     * Private Use Area A, in the range U+F0000..U+FFFFD. Therefore each emoji takes 2 chars.
+     * char presentation of all TypefaceEmojiRasterizer's in a single array. All emojis we have are
+     * mapped to Private Use Area A, in the range U+F0000..U+FFFFD. Therefore each emoji takes 2
+     * chars.
      */
     private final @NonNull char[] mEmojiCharArray;
 
@@ -213,7 +214,7 @@
     }
 
     /**
-     * Add an EmojiMetadata to the index.
+     * Add a TypefaceEmojiRasterizer to the index.
      *
      * @hide
      */
@@ -228,8 +229,9 @@
     }
 
     /**
-     * Trie node that holds mapping from emoji codepoint(s) to EmojiMetadata. A single codepoint
-     * emoji is represented by a child of the root node.
+     * Trie node that holds mapping from emoji codepoint(s) to TypefaceEmojiRasterizer.
+     *
+     * A single codepoint emoji is represented by a child of the root node.
      *
      * @hide
      */

diff --git a/emoji2/emoji2/src/main/java/androidx/emoji2/text/TypefaceEmojiRasterizer.java b/emoji2/emoji2/src/main/java/androidx/emoji2/text/TypefaceEmojiRasterizer.java
index f5bbe43..f120b3c 100644
--- a/emoji2/emoji2/src/main/java/androidx/emoji2/text/TypefaceEmojiRasterizer.java
+++ b/emoji2/emoji2/src/main/java/androidx/emoji2/text/TypefaceEmojiRasterizer.java

@@ -89,7 +89,7 @@
     private static final ThreadLocal<MetadataItem> sMetadataItem = new ThreadLocal<>();
 
     /**
-     * Index of the EmojiMetadata in {@link MetadataList}.
+     * Index of the TypefaceEmojiRasterizer in {@link MetadataList}.
      */
     private final int mIndex;
 
@@ -148,7 +148,7 @@
     }
 
     /**
-     * @return a ThreadLocal instance of MetadataItem for this EmojiMetadata
+     * @return a ThreadLocal instance of MetadataItem for this TypefaceEmojiRasterizer
      */
     private MetadataItem getMetadataItem() {
         MetadataItem result = sMetadataItem.get();
@@ -159,10 +159,11 @@
         // MetadataList is a wrapper around the metadata ByteBuffer. MetadataItem is a wrapper with
         // an index (pointer) on this ByteBuffer that represents a single emoji. Both are FlatBuffer
         // classes that wraps a ByteBuffer and gives access to the information in it. In order not
-        // to create a wrapper class for each EmojiMetadata, we use mIndex as the index of the
-        // MetadataItem in the ByteBuffer. We need to reiniitalize the current thread local instance
-        // by executing the statement below. All the statement does is to set an int index in
-        // MetadataItem. the same instance is used by all EmojiMetadata classes in the same thread.
+        // to create a wrapper class for each TypefaceEmojiRasterizer, we use mIndex as the index
+        // of the MetadataItem in the ByteBuffer. We need to reiniitalize the current thread
+        // local instance by executing the statement below. All the statement does is to set an
+        // int index in MetadataItem. the same instance is used by all TypefaceEmojiRasterizer
+        // classes in the same thread.
         mMetadataRepo.getMetadataList().list(result, mIndex);
         return result;
     }