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cc98ea1956
Passing these through the generic JsonValue path was causing us to instantiate temporary JsonValues that incurred a heap allocation. This avoids that by adding specialized overloads for string types.
89 lines
1.7 KiB
C++
89 lines
1.7 KiB
C++
#pragma once
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#include <AK/JsonValue.h>
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namespace AK {
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template<typename Builder>
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class JsonObjectSerializer;
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template<typename Builder>
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class JsonArraySerializer {
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public:
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explicit JsonArraySerializer(Builder& builder)
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: m_builder(builder)
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{
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m_builder.append('[');
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}
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JsonArraySerializer(const JsonArraySerializer&) = delete;
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JsonArraySerializer(JsonArraySerializer&&) = delete;
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~JsonArraySerializer()
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{
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if (!m_finished)
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finish();
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}
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void add(const JsonValue& value)
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{
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begin_item();
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value.serialize(m_builder);
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}
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void add(const StringView& value)
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{
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begin_item();
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m_builder.append('"');
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m_builder.append(value);
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m_builder.append('"');
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}
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void add(const String& value)
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{
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begin_item();
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m_builder.append('"');
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m_builder.append(value);
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m_builder.append('"');
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}
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void add(const char* value)
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{
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begin_item();
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m_builder.append('"');
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m_builder.append(value);
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m_builder.append('"');
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}
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JsonArraySerializer<Builder> add_array()
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{
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begin_item();
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return JsonArraySerializer(m_builder);
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}
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// Implemented in JsonObjectSerializer.h
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JsonObjectSerializer<Builder> add_object();
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void finish()
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{
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ASSERT(!m_finished);
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m_finished = true;
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m_builder.append(']');
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}
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private:
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void begin_item()
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{
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if (!m_empty)
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m_builder.append(',');
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m_empty = false;
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}
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Builder& m_builder;
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bool m_empty { true };
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bool m_finished { false };
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};
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}
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using AK::JsonArraySerializer;
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