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// ArduinoJson - arduinojson.org
// Copyright Benoit Blanchon 2014-2018
// MIT License
#pragma once
#include "../Configuration.hpp"
#include "../TypeTraits/EnableIf.hpp"
#include "DummyPrint.hpp"
#include "DynamicStringBuilder.hpp"
#include "IndentedPrint.hpp"
#include "JsonSerializer.hpp"
#include "JsonWriter.hpp"
#include "Prettyfier.hpp"
#include "StaticStringBuilder.hpp"
#if ARDUINOJSON_ENABLE_STD_STREAM
#include "StreamPrintAdapter.hpp"
#endif
namespace ArduinoJson {
namespace Internals {
// Implements all the overloads of printTo() and prettyPrintTo()
// Caution: this class use a template parameter to avoid virtual methods.
// This is a bit curious but allows to reduce the size of JsonVariant, JsonArray
// and JsonObject.
template <typename T>
class JsonPrintable {
public:
template <typename Print>
typename EnableIf<!StringTraits<Print>::has_append, size_t>::type printTo(
Print &print) const {
JsonWriter<Print> writer(print);
JsonSerializer<JsonWriter<Print> >::serialize(downcast(), writer);
return writer.bytesWritten();
}
#if ARDUINOJSON_ENABLE_STD_STREAM
std::ostream &printTo(std::ostream &os) const {
StreamPrintAdapter adapter(os);
printTo(adapter);
return os;
}
#endif
size_t printTo(char *buffer, size_t bufferSize) const {
StaticStringBuilder sb(buffer, bufferSize);
return printTo(sb);
}
template <size_t TN>
size_t printTo(char (&buffer)[TN]) const {
return printTo(buffer, TN);
}
template <typename TString>
typename EnableIf<StringTraits<TString>::has_append, size_t>::type printTo(
TString &str) const {
DynamicStringBuilder<TString> sb(str);
return printTo(sb);
}
template <typename Print>
size_t prettyPrintTo(IndentedPrint<Print> &print) const {
Prettyfier<Print> p(print);
return printTo(p);
}
size_t prettyPrintTo(char *buffer, size_t bufferSize) const {
StaticStringBuilder sb(buffer, bufferSize);
return prettyPrintTo(sb);
}
template <size_t TN>
size_t prettyPrintTo(char (&buffer)[TN]) const {
return prettyPrintTo(buffer, TN);
}
template <typename Print>
typename EnableIf<!StringTraits<Print>::has_append, size_t>::type
prettyPrintTo(Print &print) const {
IndentedPrint<Print> indentedPrint(print);
return prettyPrintTo(indentedPrint);
}
template <typename TString>
typename EnableIf<StringTraits<TString>::has_append, size_t>::type
prettyPrintTo(TString &str) const {
DynamicStringBuilder<TString> sb(str);
return prettyPrintTo(sb);
}
size_t measureLength() const {
DummyPrint dp;
return printTo(dp);
}
size_t measurePrettyLength() const {
DummyPrint dp;
return prettyPrintTo(dp);
}
private:
const T &downcast() const {
return *static_cast<const T *>(this);
}
};
#if ARDUINOJSON_ENABLE_STD_STREAM
template <typename T>
inline std::ostream &operator<<(std::ostream &os, const JsonPrintable<T> &v) {
return v.printTo(os);
}
#endif
}
}
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