Mojo: validate nullability in Java bindings.

do_not_commit/Foo.java

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file is autogenerated by:
+//     mojo/public/tools/bindings/mojom_bindings_generator.py
+// For:
+//     mojo/public/interfaces/bindings/tests/sample_service.mojom
+//
+
+package org.chromium.mojo.bindings.test.mojom.sample;
+
+public final class Foo extends org.chromium.mojo.bindings.Struct {
+
+    private static final int STRUCT_SIZE = 96;
+    private static final DataHeader DEFAULT_STRUCT_INFO = new DataHeader(STRUCT_SIZE, 15);
+
+    public static final String FOOBY = (String) "Fooby";
+
+    public String name;
+    public int x;
+    public int y;
+    public boolean a;
+    public boolean b;
+    public boolean c;
+    public Bar bar;
+    public Bar[] extraBars;
+    public byte[] data;
+    public org.chromium.mojo.system.MessagePipeHandle source;
+    public org.chromium.mojo.system.DataPipe.ConsumerHandle[] inputStreams;
+    public org.chromium.mojo.system.DataPipe.ProducerHandle[] outputStreams;
+    public boolean[][] arrayOfArrayOfBools;
+    public String[][][] multiArrayOfStrings;
+    public boolean[] arrayOfBools;
+
+    public Foo() {
+        super(STRUCT_SIZE);
+        name = (String) Foo.FOOBY;
+        a = (boolean) true;
+        source = org.chromium.mojo.system.InvalidHandle.INSTANCE;
+    }
+
+    public static Foo deserialize(org.chromium.mojo.bindings.Message message) {
+        return decode(new org.chromium.mojo.bindings.Decoder(message));
+    }
+
+    public static Foo decode(org.chromium.mojo.bindings.Decoder decoder0) {
+        if (decoder0 == null) {
+            return null;
+        }
+        Foo result = new Foo();
+        DataHeader mainDataHeader = decoder0.readDataHeader();
+        if (mainDataHeader.numFields > 0) {
+            result.x = decoder0.readInt(8);
+        }
+        if (mainDataHeader.numFields > 1) {
+            result.y = decoder0.readInt(12);
+        }
+        if (mainDataHeader.numFields > 2) {
+            result.a = decoder0.readBoolean(16, 0);
+        }
+        if (mainDataHeader.numFields > 3) {
+            result.b = decoder0.readBoolean(16, 1);
+        }
+        if (mainDataHeader.numFields > 4) {
+            result.c = decoder0.readBoolean(16, 2);
+        }
+        if (mainDataHeader.numFields > 9) {
+            result.source = decoder0.readMessagePipeHandle(20, true);
+        }
+        if (mainDataHeader.numFields > 5) {
+            org.chromium.mojo.bindings.Decoder decoder1 = decoder0.readPointer(24, true);
+            result.bar = Bar.decode(decoder1);
+        }
+        if (mainDataHeader.numFields > 6) {
+            result.data = decoder0.readBytes(32, org.chromium.mojo.bindings.Decoder.ARRAY_NULLABLE);

[qsr, 2014/08/29 14:17:57]

Should probably be in BindingsHelper and not Decoder -> You will need the same
to test for encoding issues.

[ppi, 2014/08/29 14:46:49]

Done.

+        }
+        if (mainDataHeader.numFields > 7) {
+            org.chromium.mojo.bindings.Decoder decoder1 = decoder0.readPointer(40, true);
+            if (decoder1 == null) {
+                result.extraBars = null;
+            } else {
+                DataHeader si1 = decoder1.readDataHeader();
+                result.extraBars = new Bar[si1.numFields];
+                for (int i1 = 0; i1 < si1.numFields; ++i1) {
+                    org.chromium.mojo.bindings.Decoder decoder2 = decoder1.readPointer(DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i1, false);
+                    result.extraBars[i1] = Bar.decode(decoder2);
+                }
+            }
+        }
+        if (mainDataHeader.numFields > 8) {
+            result.name = decoder0.readString(48, false);
+        }
+        if (mainDataHeader.numFields > 10) {
+            result.inputStreams = decoder0.readConsumerHandles(56, org.chromium.mojo.bindings.Decoder.ARRAY_NULLABLE);
+        }
+        if (mainDataHeader.numFields > 11) {
+            result.outputStreams = decoder0.readProducerHandles(64, org.chromium.mojo.bindings.Decoder.ARRAY_NULLABLE);
+        }
+        if (mainDataHeader.numFields > 12) {
+            org.chromium.mojo.bindings.Decoder decoder1 = decoder0.readPointer(72, true);
+            if (decoder1 == null) {
+                result.arrayOfArrayOfBools = null;
+            } else {
+                DataHeader si1 = decoder1.readDataHeader();
+                result.arrayOfArrayOfBools = new boolean[si1.numFields][];
+                for (int i1 = 0; i1 < si1.numFields; ++i1) {
+                    result.arrayOfArrayOfBools[i1] = decoder1.readBooleans(DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i1, org.chromium.mojo.bindings.Decoder.NOTHING_NULLABLE);
+                }
+            }
+        }
+        if (mainDataHeader.numFields > 13) {
+            org.chromium.mojo.bindings.Decoder decoder1 = decoder0.readPointer(80, true);
+            if (decoder1 == null) {
+                result.multiArrayOfStrings = null;
+            } else {
+                DataHeader si1 = decoder1.readDataHeader();
+                result.multiArrayOfStrings = new String[si1.numFields][][];
+                for (int i1 = 0; i1 < si1.numFields; ++i1) {
+                    org.chromium.mojo.bindings.Decoder decoder2 = decoder1.readPointer(DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i1, false);
+                    if (decoder2 == null) {
+                        result.multiArrayOfStrings[i1] = null;
+                    } else {
+                        DataHeader si2 = decoder2.readDataHeader();
+                        result.multiArrayOfStrings[i1] = new String[si2.numFields][];
+                        for (int i2 = 0; i2 < si2.numFields; ++i2) {
+                            org.chromium.mojo.bindings.Decoder decoder3 = decoder2.readPointer(DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i2, false);
+                            if (decoder3 == null) {
+                                result.multiArrayOfStrings[i1][i2] = null;
+                            } else {
+                                DataHeader si3 = decoder3.readDataHeader();
+                                result.multiArrayOfStrings[i1][i2] = new String[si3.numFields];
+                                for (int i3 = 0; i3 < si3.numFields; ++i3) {
+                                    result.multiArrayOfStrings[i1][i2][i3] = decoder3.readString(DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i3, false);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        if (mainDataHeader.numFields > 14) {
+            result.arrayOfBools = decoder0.readBooleans(88, org.chromium.mojo.bindings.Decoder.ARRAY_NULLABLE);
+        }
+        return result;
+    }
+
+    @Override
+    protected final void encode(org.chromium.mojo.bindings.Encoder encoder) {
+        org.chromium.mojo.bindings.Encoder encoder0 = encoder.getEncoderAtDataOffset(DEFAULT_STRUCT_INFO);
+        encoder0.encode(x, 8);
+        encoder0.encode(y, 12);
+        encoder0.encode(a, 16, 0);
+        encoder0.encode(b, 16, 1);
+        encoder0.encode(c, 16, 2);
+        encoder0.encode(source, 20);
+        encoder0.encode(bar, 24);
+        encoder0.encode(data, 32);
+        if (extraBars == null) {
+            encoder0.encodeNullPointer(40);
+        } else {
+            org.chromium.mojo.bindings.Encoder encoder1 = encoder0.encodePointerArray(extraBars.length, 40);
+            for (int i0 = 0; i0 < extraBars.length; ++i0) {
+                encoder1.encode(extraBars[i0], DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i0);
+            }
+        }
+        encoder0.encode(name, 48);
+        encoder0.encode(inputStreams, 56);
+        encoder0.encode(outputStreams, 64);
+        if (arrayOfArrayOfBools == null) {
+            encoder0.encodeNullPointer(72);
+        } else {
+            org.chromium.mojo.bindings.Encoder encoder1 = encoder0.encodePointerArray(arrayOfArrayOfBools.length, 72);
+            for (int i0 = 0; i0 < arrayOfArrayOfBools.length; ++i0) {
+                encoder1.encode(arrayOfArrayOfBools[i0], DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i0);
+            }
+        }
+        if (multiArrayOfStrings == null) {
+            encoder0.encodeNullPointer(80);
+        } else {
+            org.chromium.mojo.bindings.Encoder encoder1 = encoder0.encodePointerArray(multiArrayOfStrings.length, 80);
+            for (int i0 = 0; i0 < multiArrayOfStrings.length; ++i0) {
+                if (multiArrayOfStrings[i0] == null) {
+                    encoder1.encodeNullPointer(DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i0);
+                } else {
+                    org.chromium.mojo.bindings.Encoder encoder2 = encoder1.encodePointerArray(multiArrayOfStrings[i0].length, DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i0);
+                    for (int i1 = 0; i1 < multiArrayOfStrings[i0].length; ++i1) {
+                        if (multiArrayOfStrings[i0][i1] == null) {
+                            encoder2.encodeNullPointer(DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i1);
+                        } else {
+                            org.chromium.mojo.bindings.Encoder encoder3 = encoder2.encodePointerArray(multiArrayOfStrings[i0][i1].length, DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i1);
+                            for (int i2 = 0; i2 < multiArrayOfStrings[i0][i1].length; ++i2) {
+                                encoder3.encode(multiArrayOfStrings[i0][i1][i2], DataHeader.HEADER_SIZE + org.chromium.mojo.bindings.BindingsHelper.POINTER_SIZE * i2);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        encoder0.encode(arrayOfBools, 88);
+    }
+}
+