SkJson

For now this is only wired to a bench and a couple of tests.

Local numbers, for a ~500KB BM "compressed" json:

    micros   	bench
   2456.54  	json_rapidjson	nonrendering
   1192.38  	json_skjson	nonrendering


Change-Id: I7b3514f84c7c525d1787722c43ad6095e3692563
Reviewed-on: https://skia-review.googlesource.com/127622
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/modules/skjson/src/FuzzSkJSON.cpp b/modules/skjson/src/FuzzSkJSON.cpp
new file mode 100644
index 0000000000..ce33cc1299
--- /dev/null
+++ b/modules/skjson/src/FuzzSkJSON.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2018 Google, LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkAutoMalloc.h"
+#include "SkData.h"
+#include "SkJSON.h"
+#include "SkStream.h"
+
+void FuzzSkJSON(sk_sp<SkData> bytes) {
+    // TODO: add a size + len skjson::DOM factory?
+    SkAutoMalloc data(bytes->size() + 1);
+    auto* c_str = static_cast<char*>(data.get());
+
+    memcpy(c_str, bytes->data(), bytes->size());
+    c_str[bytes->size()] = '\0';
+
+    skjson::DOM dom(c_str);
+    SkDynamicMemoryWStream wstream;
+    dom.write(&wstream);
+}
+
+#if defined(IS_FUZZING_WITH_LIBFUZZER)
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    auto bytes = SkData::MakeWithoutCopy(data, size);
+    FuzzSkJSON(bytes);
+    return 0;
+}
+#endif