forked from bblanchon/ArduinoJson
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// Copyright Benoit Blanchon 2014-2015
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// MIT License
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//
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// Arduino JSON library
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// https://github.com/bblanchon/ArduinoJson
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#pragma once
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#include "../Arduino/Print.hpp"
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#include "QuotedString.hpp"
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namespace ArduinoJson {
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namespace Internals {
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// Writes the JSON tokens to a Print implementation
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// This class is used by:
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// - JsonArray::writeTo()
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// - JsonObject::writeTo()
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// - JsonVariant::writeTo()
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// Its derived by PrettyJsonWriter that overrides some members to add
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// indentation.
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class JsonWriter {
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public:
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explicit JsonWriter(Print &sink) : _sink(sink), _length(0) {}
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// Returns the number of bytes sent to the Print implementation.
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// This is very handy for implementations of printTo() that must return the
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// number of bytes written.
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size_t bytesWritten() { return _length; }
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void beginArray() { write('['); }
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void endArray() { write(']'); }
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void beginObject() { write('{'); }
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void endObject() { write('}'); }
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void writeColon() { write(':'); }
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void writeComma() { write(','); }
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void writeString(const char *value) {
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_length += QuotedString::printTo(value, _sink);
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}
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void writeLong(long value) { _length += _sink.print(value); }
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void writeBoolean(bool value) {
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_length += _sink.print(value ? "true" : "false");
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}
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void writeDouble(double value, uint8_t decimals) {
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_length += _sink.print(value, decimals);
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}
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protected:
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void write(char c) { _length += _sink.write(c); }
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void write(const char *s) { _length += _sink.print(s); }
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Print &_sink;
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size_t _length;
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private:
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JsonWriter &operator=(const JsonWriter &); // cannot be assigned
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};
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}
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}
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