1 files changed, 168 insertions, 0 deletions
diff --git a/source/core/StarJsonBuilder.cpp b/source/core/StarJsonBuilder.cpp
new file mode 100644
index 0000000..432cef9
--- /dev/null
+++ b/source/core/StarJsonBuilder.cpp
@@ -0,0 +1,168 @@
+#include "StarJsonBuilder.hpp"
+#include "StarLexicalCast.hpp"
+
+namespace Star {
+
+void JsonBuilderStream::beginObject() {
+  pushSentry();
+}
+
+void JsonBuilderStream::objectKey(char32_t const* s, size_t len) {
+  push(Json(s, len));
+}
+
+void JsonBuilderStream::endObject() {
+  JsonObject object;
+  while (true) {
+    if (isSentry()) {
+      set(Json(move(object)));
+      return;
+    } else {
+      Json v = pop();
+      String k = pop().toString();
+      if (!object.insert(k, move(v)).second)
+        throw JsonParsingException(strf("Json object contains a duplicate entry for key '%s'", k));
+    }
+  }
+}
+
+void JsonBuilderStream::beginArray() {
+  pushSentry();
+}
+
+void JsonBuilderStream::endArray() {
+  JsonArray array;
+  while (true) {
+    if (isSentry()) {
+      array.reverse();
+      set(Json(move(array)));
+      return;
+    } else {
+      array.append(pop());
+    }
+  }
+}
+
+void JsonBuilderStream::putString(char32_t const* s, size_t len) {
+  push(Json(s, len));
+}
+
+void JsonBuilderStream::putDouble(char32_t const* s, size_t len) {
+  push(Json(lexicalCast<double>(String(s, len))));
+}
+
+void JsonBuilderStream::putInteger(char32_t const* s, size_t len) {
+  push(Json(lexicalCast<long long>(String(s, len))));
+}
+
+void JsonBuilderStream::putBoolean(bool b) {
+  push(Json(b));
+}
+
+void JsonBuilderStream::putNull() {
+  push(Json());
+}
+
+void JsonBuilderStream::putWhitespace(char32_t const*, size_t) {}
+
+void JsonBuilderStream::putColon() {}
+
+void JsonBuilderStream::putComma() {}
+
+size_t JsonBuilderStream::stackSize() {
+  return m_stack.size();
+}
+
+Json JsonBuilderStream::takeTop() {
+  if (m_stack.size())
+    return m_stack.takeLast().take();
+  else
+    return Json();
+}
+
+void JsonBuilderStream::push(Json v) {
+  m_stack.append(move(v));
+}
+
+Json JsonBuilderStream::pop() {
+  return m_stack.takeLast().take();
+}
+
+void JsonBuilderStream::set(Json v) {
+  m_stack.last() = move(v);
+}
+
+void JsonBuilderStream::pushSentry() {
+  m_stack.append({});
+}
+
+bool JsonBuilderStream::isSentry() {
+  return !m_stack.empty() && !m_stack.last();
+}
+
+void JsonStreamer<Json>::toJsonStream(Json const& val, JsonStream& stream, bool sort) {
+  Json::Type type = val.type();
+  if (type == Json::Type::Null) {
+    stream.putNull();
+  } else if (type == Json::Type::Float) {
+    auto d = String(toString(val.toDouble())).wideString();
+    stream.putDouble(d.c_str(), d.length());
+  } else if (type == Json::Type::Bool) {
+    stream.putBoolean(val.toBool());
+  } else if (type == Json::Type::Int) {
+    auto i = String(toString(val.toInt())).wideString();
+    stream.putInteger(i.c_str(), i.length());
+  } else if (type == Json::Type::String) {
+    auto ws = val.toString().wideString();
+    stream.putString(ws.c_str(), ws.length());
+  } else if (type == Json::Type::Array) {
+    stream.beginArray();
+    bool first = true;
+    for (auto const& elem : val.iterateArray()) {
+      if (!first)
+        stream.putComma();
+      first = false;
+      toJsonStream(elem, stream, sort);
+    }
+    stream.endArray();
+  } else if (type == Json::Type::Object) {
+    stream.beginObject();
+    List<String::Char> chars;
+    if (sort) {
+      auto objectPtr = val.objectPtr();
+      List<JsonObject::const_iterator> iterators;
+      iterators.reserve(objectPtr->size());
+      for (auto i = objectPtr->begin(); i != objectPtr->end(); ++i)
+        iterators.append(i);
+      iterators.sort([](JsonObject::const_iterator a, JsonObject::const_iterator b) {
+          return a->first < b->first;
+        });
+      bool first = true;
+      for (auto const& i : iterators) {
+        if (!first)
+          stream.putComma();
+        first = false;
+        chars.clear();
+        for (auto const& c : i->first)
+          chars.push_back(c);
+        stream.objectKey(chars.ptr(), chars.size());
+        stream.putColon();
+        toJsonStream(i->second, stream, sort);
+      }
+    } else {
+      bool first = true;
+      for (auto const& pair : val.iterateObject()) {
+        if (!first)
+          stream.putComma();
+        first = false;
+        auto ws = pair.first.wideString();
+        stream.objectKey(ws.c_str(), ws.length());
+        stream.putColon();
+        toJsonStream(pair.second, stream, sort);
+      }
+    }
+    stream.endObject();
+  }
+}
+
+}