105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
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#ifndef STAR_JSON_BUILDER_HPP
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#define STAR_JSON_BUILDER_HPP
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#include "StarJsonParser.hpp"
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#include "StarJson.hpp"
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namespace Star {
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class JsonBuilderStream : public JsonStream {
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public:
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virtual void beginObject();
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virtual void objectKey(char32_t const* s, size_t len);
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virtual void endObject();
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virtual void beginArray();
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virtual void endArray();
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virtual void putString(char32_t const* s, size_t len);
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virtual void putDouble(char32_t const* s, size_t len);
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virtual void putInteger(char32_t const* s, size_t len);
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virtual void putBoolean(bool b);
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virtual void putNull();
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virtual void putWhitespace(char32_t const* s, size_t len);
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virtual void putColon();
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virtual void putComma();
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size_t stackSize();
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Json takeTop();
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private:
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void push(Json v);
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Json pop();
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void set(Json v);
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void pushSentry();
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bool isSentry();
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List<Maybe<Json>> m_stack;
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};
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template <typename Jsonlike>
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class JsonStreamer {
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public:
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static void toJsonStream(Jsonlike const& val, JsonStream& stream, bool sort);
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};
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template <>
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class JsonStreamer<Json> {
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public:
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static void toJsonStream(Json const& val, JsonStream& stream, bool sort);
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};
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template <typename InputIterator>
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Json inputUtf8Json(InputIterator begin, InputIterator end, bool fragment) {
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typedef U8ToU32Iterator<InputIterator> Utf32Input;
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typedef JsonParser<Utf32Input> Parser;
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JsonBuilderStream stream;
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Parser parser(stream);
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Utf32Input wbegin(begin);
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Utf32Input wend(end);
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Utf32Input pend = parser.parse(wbegin, wend, fragment);
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if (parser.error())
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throw JsonParsingException(strf("Error parsing json: %s at %s:%s", parser.error(), parser.line(), parser.column()));
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else if (pend != wend)
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throw JsonParsingException(strf("Error extra data at end of input at %s:%s", parser.line(), parser.column()));
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return stream.takeTop();
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}
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template <typename OutputIterator>
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void outputUtf8Json(Json const& val, OutputIterator out, int pretty, bool sort) {
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typedef Utf8OutputIterator<OutputIterator> Utf8Output;
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typedef JsonWriter<Utf8Output> Writer;
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Writer writer(Utf8Output(out), pretty);
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JsonStreamer<Json>::toJsonStream(val, writer, sort);
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}
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template <typename InputIterator, typename Stream = JsonBuilderStream, typename Jsonlike = Json>
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Jsonlike inputUtf32Json(InputIterator begin, InputIterator end, bool fragment) {
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Stream stream;
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JsonParser<InputIterator> parser(stream);
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InputIterator pend = parser.parse(begin, end, fragment);
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if (parser.error()) {
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throw JsonParsingException(strf("Error parsing json: %s at %s:%s", parser.error(), parser.line(), parser.column()));
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} else if (pend != end) {
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throw JsonParsingException(strf("Error extra data at end of input at %s:%s", parser.line(), parser.column()));
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}
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return stream.takeTop();
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}
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template <typename OutputIterator, typename Jsonlike = Json>
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void outputUtf32Json(Jsonlike const& val, OutputIterator out, int pretty, bool sort) {
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JsonWriter<OutputIterator> writer(out, pretty);
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JsonStreamer<Jsonlike>::toJsonStream(val, writer, sort);
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}
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}
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#endif
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