Fold SkJSON into Skia/utils

It's a tiny, core-ish component -- might as well treat as such to
simplify dependencies.

Change-Id: I6f31ce2d151f9a629d88bfc7f15d64891d5150c0
Reviewed-on: https://skia-review.googlesource.com/135780
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>

1 files changed, 161 insertions, 0 deletions

diff --git a/bench/JSONBench.cpp b/bench/JSONBench.cpp
new file mode 100644
index 0000000000..4ef1d6c01b
--- /dev/null
+++ b/bench/JSONBench.cpp
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Benchmark.h"
+#include "SkData.h"
+#include "SkJSON.h"
+#include "SkStream.h"
+
+#if defined(SK_BUILD_FOR_ANDROID)
+static constexpr const char* kBenchFile = "/data/local/tmp/bench.json";
+#else
+static constexpr const char* kBenchFile = "/tmp/bench.json";
+#endif
+
+class JsonBench : public Benchmark {
+public:
+
+protected:
+    const char* onGetName() override { return "json_skjson"; }
+
+    bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
+
+    void onPerCanvasPreDraw(SkCanvas*) override {
+        fData = SkData::MakeFromFileName(kBenchFile);
+        if (!fData) {
+            SkDebugf("!! Could not open bench file: %s\n", kBenchFile);
+        }
+    }
+
+    void onPerCanvasPostDraw(SkCanvas*) override {
+        fData = nullptr;
+    }
+
+    void onDraw(int loops, SkCanvas*) override {
+        if (!fData) return;
+
+        for (int i = 0; i < loops; i++) {
+            skjson::DOM dom(static_cast<const char*>(fData->data()), fData->size());
+            if (dom.root().is<skjson::NullValue>()) {
+                SkDebugf("!! Parsing failed.\n");
+                return;
+            }
+        }
+    }
+
+private:
+    sk_sp<SkData> fData;
+
+    using INHERITED = Benchmark;
+};
+
+DEF_BENCH( return new JsonBench; )
+
+#if (0)
+
+#include "rapidjson/document.h"
+
+class RapidJsonBench : public Benchmark {
+public:
+
+protected:
+    const char* onGetName() override { return "json_rapidjson"; }
+
+    bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
+
+    void onPerCanvasPreDraw(SkCanvas*) override {
+        if (auto stream = SkStream::MakeFromFile(kBenchFile)) {
+            SkASSERT(stream->hasLength());
+            fCStringData = SkData::MakeUninitialized(stream->getLength() + 1);
+            auto* data8 = reinterpret_cast<uint8_t*>(fCStringData->writable_data());
+            SkAssertResult(stream->read(data8, stream->getLength()) == stream->getLength());
+            data8[stream->getLength()] = '\0';
+
+        } else {
+            SkDebugf("!! Could not open bench file: %s\n", kBenchFile);
+        }
+    }
+
+    void onPerCanvasPostDraw(SkCanvas*) override {
+        fCStringData = nullptr;
+    }
+
+    void onDraw(int loops, SkCanvas*) override {
+        if (!fCStringData) return;
+
+        for (int i = 0; i < loops; i++) {
+            rapidjson::Document doc;
+            doc.Parse(static_cast<const char*>(fCStringData->data()));
+            if (doc.HasParseError()) {
+                SkDebugf("!! Parsing failed.\n");
+                return;
+            }
+        }
+    }
+
+private:
+    sk_sp<SkData> fCStringData;
+
+    using INHERITED = Benchmark;
+};
+
+DEF_BENCH( return new RapidJsonBench; )
+
+#endif
+
+#if (0)
+
+#include "pjson.h"
+
+class PJsonBench : public Benchmark {
+public:
+
+protected:
+    const char* onGetName() override { return "json_pjson"; }
+
+    bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
+
+    void onPerCanvasPreDraw(SkCanvas*) override {
+        if (auto stream = SkStream::MakeFromFile(kBenchFile)) {
+            SkASSERT(stream->hasLength());
+            fCStringData = SkData::MakeUninitialized(stream->getLength() + 1);
+            auto* data8 = reinterpret_cast<uint8_t*>(fCStringData->writable_data());
+            SkAssertResult(stream->read(data8, stream->getLength()) == stream->getLength());
+            data8[stream->getLength()] = '\0';
+
+        } else {
+            SkDebugf("!! Could not open bench file: %s\n", kBenchFile);
+        }
+    }
+
+    void onPerCanvasPostDraw(SkCanvas*) override {
+        fCStringData = nullptr;
+    }
+
+    void onDraw(int loops, SkCanvas*) override {
+        if (!fCStringData) return;
+
+        for (int i = 0; i < loops; i++) {
+            // Copy needed for in-place operation.
+            auto data = SkData::MakeWithCopy(fCStringData->data(), fCStringData->size());
+            pjson::document doc;
+            if (!doc.deserialize_in_place(static_cast<char*>(data->writable_data()))) {
+                SkDebugf("!! Parsing failed.\n");
+                return;
+            }
+        }
+    }
+
+private:
+    sk_sp<SkData> fCStringData;
+
+    using INHERITED = Benchmark;
+};
+
+DEF_BENCH( return new PJsonBench; )
+
+#endif