Defend against Message.unknownFields being impossibly null

wire-gson-support/src/test/java/com/squareup/dinosaurs/Dinosaur.java

@@ -0,0 +1,252 @@
+// Code generated by Wire protocol buffer compiler, do not edit.
+// Source file: squareup/dinosaurs/dinosaur.proto
+package com.squareup.dinosaurs;
+
+import com.squareup.geology.Period;
+import com.squareup.wire.FieldEncoding;
+import com.squareup.wire.Message;
+import com.squareup.wire.ProtoAdapter;
+import com.squareup.wire.ProtoReader;
+import com.squareup.wire.ProtoWriter;
+import com.squareup.wire.WireField;
+import com.squareup.wire.internal.Internal;
+import java.io.IOException;
+import java.lang.Double;
+import java.lang.Object;
+import java.lang.Override;
+import java.lang.String;
+import java.lang.StringBuilder;
+import java.util.List;
+import okio.ByteString;
+
+public final class Dinosaur extends Message<Dinosaur, Dinosaur.Builder> {
+  public static final ProtoAdapter<Dinosaur> ADAPTER = new ProtoAdapter_Dinosaur();
+
+  private static final long serialVersionUID = 0L;
+
+  public static final String DEFAULT_NAME = "";
+
+  public static final Double DEFAULT_LENGTH_METERS = 0.0d;
+
+  public static final Double DEFAULT_MASS_KILOGRAMS = 0.0d;
+
+  public static final Period DEFAULT_PERIOD = Period.CRETACEOUS;
+
+  /**
+   * Common name of this dinosaur, like "Stegosaurus".
+   */
+  @WireField(
+      tag = 1,
+      adapter = "com.squareup.wire.ProtoAdapter#STRING"
+  )
+  public final String name;
+
+  /**
+   * URLs with images of this dinosaur.
+   */
+  @WireField(
+      tag = 2,
+      adapter = "com.squareup.wire.ProtoAdapter#STRING",
+      label = WireField.Label.REPEATED
+  )
+  public final List<String> picture_urls;
+
+  @WireField(
+      tag = 3,
+      adapter = "com.squareup.wire.ProtoAdapter#DOUBLE"
+  )
+  public final Double length_meters;
+
+  @WireField(
+      tag = 4,
+      adapter = "com.squareup.wire.ProtoAdapter#DOUBLE"
+  )
+  public final Double mass_kilograms;
+
+  @WireField(
+      tag = 5,
+      adapter = "com.squareup.geology.Period#ADAPTER"
+  )
+  public final Period period;
+
+  public Dinosaur(String name, List<String> picture_urls, Double length_meters,
+      Double mass_kilograms, Period period) {
+    this(name, picture_urls, length_meters, mass_kilograms, period, ByteString.EMPTY);
+  }
+
+  public Dinosaur(String name, List<String> picture_urls, Double length_meters,
+      Double mass_kilograms, Period period, ByteString unknownFields) {
+    super(ADAPTER, unknownFields);
+    this.name = name;
+    this.picture_urls = Internal.immutableCopyOf("picture_urls", picture_urls);
+    this.length_meters = length_meters;
+    this.mass_kilograms = mass_kilograms;
+    this.period = period;
+  }
+
+  @Override
+  public Builder newBuilder() {
+    Builder builder = new Builder();
+    builder.name = name;
+    builder.picture_urls = Internal.copyOf("picture_urls", picture_urls);
+    builder.length_meters = length_meters;
+    builder.mass_kilograms = mass_kilograms;
+    builder.period = period;
+    builder.addUnknownFields(unknownFields());
+    return builder;
+  }
+
+  @Override
+  public boolean equals(Object other) {
+    if (other == this) return true;
+    if (!(other instanceof Dinosaur)) return false;
+    Dinosaur o = (Dinosaur) other;
+    return unknownFields().equals(o.unknownFields())
+        && Internal.equals(name, o.name)
+        && picture_urls.equals(o.picture_urls)
+        && Internal.equals(length_meters, o.length_meters)
+        && Internal.equals(mass_kilograms, o.mass_kilograms)
+        && Internal.equals(period, o.period);
+  }
+
+  @Override
+  public int hashCode() {
+    int result = super.hashCode;
+    if (result == 0) {
+      result = unknownFields().hashCode();
+      result = result * 37 + (name != null ? name.hashCode() : 0);
+      result = result * 37 + picture_urls.hashCode();
+      result = result * 37 + (length_meters != null ? length_meters.hashCode() : 0);
+      result = result * 37 + (mass_kilograms != null ? mass_kilograms.hashCode() : 0);
+      result = result * 37 + (period != null ? period.hashCode() : 0);
+      super.hashCode = result;
+    }
+    return result;
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder builder = new StringBuilder();
+    if (name != null) builder.append(", name=").append(name);
+    if (!picture_urls.isEmpty()) builder.append(", picture_urls=").append(picture_urls);
+    if (length_meters != null) builder.append(", length_meters=").append(length_meters);
+    if (mass_kilograms != null) builder.append(", mass_kilograms=").append(mass_kilograms);
+    if (period != null) builder.append(", period=").append(period);
+    return builder.replace(0, 2, "Dinosaur{").append('}').toString();
+  }
+
+  public static final class Builder extends Message.Builder<Dinosaur, Builder> {
+    public String name;
+
+    public List<String> picture_urls;
+
+    public Double length_meters;
+
+    public Double mass_kilograms;
+
+    public Period period;
+
+    public Builder() {
+      picture_urls = Internal.newMutableList();
+    }
+
+    /**
+     * Common name of this dinosaur, like "Stegosaurus".
+     */
+    public Builder name(String name) {
+      this.name = name;
+      return this;
+    }
+
+    /**
+     * URLs with images of this dinosaur.
+     */
+    public Builder picture_urls(List<String> picture_urls) {
+      Internal.checkElementsNotNull(picture_urls);
+      this.picture_urls = picture_urls;
+      return this;
+    }
+
+    public Builder length_meters(Double length_meters) {
+      this.length_meters = length_meters;
+      return this;
+    }
+
+    public Builder mass_kilograms(Double mass_kilograms) {
+      this.mass_kilograms = mass_kilograms;
+      return this;
+    }
+
+    public Builder period(Period period) {
+      this.period = period;
+      return this;
+    }
+
+    @Override
+    public Dinosaur build() {
+      return new Dinosaur(name, picture_urls, length_meters, mass_kilograms, period, super.buildUnknownFields());
+    }
+  }
+
+  private static final class ProtoAdapter_Dinosaur extends ProtoAdapter<Dinosaur> {
+    public ProtoAdapter_Dinosaur() {
+      super(FieldEncoding.LENGTH_DELIMITED, Dinosaur.class);
+    }
+
+    @Override
+    public int encodedSize(Dinosaur value) {
+      return ProtoAdapter.STRING.encodedSizeWithTag(1, value.name)
+          + ProtoAdapter.STRING.asRepeated().encodedSizeWithTag(2, value.picture_urls)
+          + ProtoAdapter.DOUBLE.encodedSizeWithTag(3, value.length_meters)
+          + ProtoAdapter.DOUBLE.encodedSizeWithTag(4, value.mass_kilograms)
+          + Period.ADAPTER.encodedSizeWithTag(5, value.period)
+          + value.unknownFields().size();
+    }
+
+    @Override
+    public void encode(ProtoWriter writer, Dinosaur value) throws IOException {
+      ProtoAdapter.STRING.encodeWithTag(writer, 1, value.name);
+      ProtoAdapter.STRING.asRepeated().encodeWithTag(writer, 2, value.picture_urls);
+      ProtoAdapter.DOUBLE.encodeWithTag(writer, 3, value.length_meters);
+      ProtoAdapter.DOUBLE.encodeWithTag(writer, 4, value.mass_kilograms);
+      Period.ADAPTER.encodeWithTag(writer, 5, value.period);
+      writer.writeBytes(value.unknownFields());
+    }
+
+    @Override
+    public Dinosaur decode(ProtoReader reader) throws IOException {
+      Builder builder = new Builder();
+      long token = reader.beginMessage();
+      for (int tag; (tag = reader.nextTag()) != -1;) {
+        switch (tag) {
+          case 1: builder.name(ProtoAdapter.STRING.decode(reader)); break;
+          case 2: builder.picture_urls.add(ProtoAdapter.STRING.decode(reader)); break;
+          case 3: builder.length_meters(ProtoAdapter.DOUBLE.decode(reader)); break;
+          case 4: builder.mass_kilograms(ProtoAdapter.DOUBLE.decode(reader)); break;
+          case 5: {
+            try {
+              builder.period(Period.ADAPTER.decode(reader));
+            } catch (ProtoAdapter.EnumConstantNotFoundException e) {
+              builder.addUnknownField(tag, FieldEncoding.VARINT, (long) e.value);
+            }
+            break;
+          }
+          default: {
+            FieldEncoding fieldEncoding = reader.peekFieldEncoding();
+            Object value = fieldEncoding.rawProtoAdapter().decode(reader);
+            builder.addUnknownField(tag, fieldEncoding, value);
+          }
+        }
+      }
+      reader.endMessage(token);
+      return builder.build();
+    }
+
+    @Override
+    public Dinosaur redact(Dinosaur value) {
+      Builder builder = value.newBuilder();
+      builder.clearUnknownFields();
+      return builder.build();
+    }
+  }
+}

wire-gson-support/src/test/java/com/squareup/geology/Period.java

@@ -0,0 +1,61 @@
+// Code generated by Wire protocol buffer compiler, do not edit.
+// Source file: squareup/geology/period.proto
+package com.squareup.geology;
+
+import com.squareup.wire.EnumAdapter;
+import com.squareup.wire.ProtoAdapter;
+import com.squareup.wire.WireEnum;
+import java.lang.Override;
+
+public enum Period implements WireEnum {
+  /**
+   * 145.5 million years ago — 66.0 million years ago.
+   */
+  CRETACEOUS(1),
+
+  /**
+   * 201.3 million years ago — 145.0 million years ago.
+   */
+  JURASSIC(2),
+
+  /**
+   * 252.17 million years ago — 201.3 million years ago.
+   */
+  TRIASSIC(3);
+
+  public static final ProtoAdapter<Period> ADAPTER = new ProtoAdapter_Period();
+
+  private final int value;
+
+  Period(int value) {
+    this.value = value;
+  }
+
+  /**
+   * Return the constant for {@code value} or null.
+   */
+  public static Period fromValue(int value) {
+    switch (value) {
+      case 1: return CRETACEOUS;
+      case 2: return JURASSIC;
+      case 3: return TRIASSIC;
+      default: return null;
+    }
+  }
+
+  @Override
+  public int getValue() {
+    return value;
+  }
+
+  private static final class ProtoAdapter_Period extends EnumAdapter<Period> {
+    ProtoAdapter_Period() {
+      super(Period.class);
+    }
+
+    @Override
+    protected Period fromValue(int value) {
+      return Period.fromValue(value);
+    }
+  }
+}