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Fancy serializer: Split object and array handling into functions

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This commit is contained in:
Evan Driscoll 2018-06-02 20:30:12 -05:00
parent 0500d41fbb
commit f180227b6d
1 changed files with 130 additions and 122 deletions
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252
include/nlohmann/detail/output/fancy_serializer.hpp
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@ -88,133 +88,13 @@ class fancy_serializer
{
case value_t::object:
{
if (val.m_value.object->empty())
{
o->write_characters("{}", 2);
return;
}
if (style.indent_step > 0)
{
o->write_characters("{\n", 2);
// variable to hold indentation for recursive calls
const auto new_indent = current_indent + style.indent_step;
if (JSON_UNLIKELY(indent_string.size() < new_indent))
{
indent_string.resize(indent_string.size() * 2, ' ');
}
// first n-1 elements
auto i = val.m_value.object->cbegin();
for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
{
o->write_characters(indent_string.c_str(), new_indent);
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\": ", 3);
dump(i->second, ensure_ascii, new_indent);
o->write_characters(",\n", 2);
}
// last element
assert(i != val.m_value.object->cend());
assert(std::next(i) == val.m_value.object->cend());
o->write_characters(indent_string.c_str(), new_indent);
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\": ", 3);
dump(i->second, ensure_ascii, new_indent);
o->write_character('\n');
o->write_characters(indent_string.c_str(), current_indent);
o->write_character('}');
}
else
{
o->write_character('{');
// first n-1 elements
auto i = val.m_value.object->cbegin();
for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
{
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\":", 2);
dump(i->second, ensure_ascii, current_indent);
o->write_character(',');
}
// last element
assert(i != val.m_value.object->cend());
assert(std::next(i) == val.m_value.object->cend());
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\":", 2);
dump(i->second, ensure_ascii, current_indent);
o->write_character('}');
}
dump_object(val, ensure_ascii, current_indent);
return;
}
case value_t::array:
{
if (val.m_value.array->empty())
{
o->write_characters("[]", 2);
return;
}
if (style.indent_step > 0)
{
o->write_characters("[\n", 2);
// variable to hold indentation for recursive calls
const auto new_indent = current_indent + style.indent_step;
if (JSON_UNLIKELY(indent_string.size() < new_indent))
{
indent_string.resize(indent_string.size() * 2, ' ');
}
// first n-1 elements
for (auto i = val.m_value.array->cbegin();
i != val.m_value.array->cend() - 1; ++i)
{
o->write_characters(indent_string.c_str(), new_indent);
dump(*i, ensure_ascii, new_indent);
o->write_characters(",\n", 2);
}
// last element
assert(not val.m_value.array->empty());
o->write_characters(indent_string.c_str(), new_indent);
dump(val.m_value.array->back(), ensure_ascii, new_indent);
o->write_character('\n');
o->write_characters(indent_string.c_str(), current_indent);
o->write_character(']');
}
else
{
o->write_character('[');
// first n-1 elements
for (auto i = val.m_value.array->cbegin();
i != val.m_value.array->cend() - 1; ++i)
{
dump(*i, ensure_ascii, current_indent);
o->write_character(',');
}
// last element
assert(not val.m_value.array->empty());
dump(val.m_value.array->back(), ensure_ascii, current_indent);
o->write_character(']');
}
dump_array(val, ensure_ascii, current_indent);
return;
}
@ -270,6 +150,134 @@ class fancy_serializer
}
private:
void dump_object(const BasicJsonType & val, bool ensure_ascii, unsigned int current_indent)
{
if (val.m_value.object->empty())
{
o->write_characters("{}", 2);
return;
}
if (style.indent_step > 0)
{
o->write_characters("{\n", 2);
// variable to hold indentation for recursive calls
const auto new_indent = current_indent + style.indent_step;
if (JSON_UNLIKELY(indent_string.size() < new_indent))
{
indent_string.resize(indent_string.size() * 2, ' ');
}
// first n-1 elements
auto i = val.m_value.object->cbegin();
for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
{
o->write_characters(indent_string.c_str(), new_indent);
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\": ", 3);
dump(i->second, ensure_ascii, new_indent);
o->write_characters(",\n", 2);
}
// last element
assert(i != val.m_value.object->cend());
assert(std::next(i) == val.m_value.object->cend());
o->write_characters(indent_string.c_str(), new_indent);
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\": ", 3);
dump(i->second, ensure_ascii, new_indent);
o->write_character('\n');
o->write_characters(indent_string.c_str(), current_indent);
o->write_character('}');
}
else
{
o->write_character('{');
// first n-1 elements
auto i = val.m_value.object->cbegin();
for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
{
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\":", 2);
dump(i->second, ensure_ascii, current_indent);
o->write_character(',');
}
// last element
assert(i != val.m_value.object->cend());
assert(std::next(i) == val.m_value.object->cend());
o->write_character('\"');
prim_serializer.dump_escaped(*o, i->first, ensure_ascii);
o->write_characters("\":", 2);
dump(i->second, ensure_ascii, current_indent);
o->write_character('}');
}
}
void dump_array(const BasicJsonType & val, bool ensure_ascii, unsigned int current_indent)
{
if (val.m_value.array->empty())
{
o->write_characters("[]", 2);
return;
}
if (style.indent_step > 0)
{
o->write_characters("[\n", 2);
// variable to hold indentation for recursive calls
const auto new_indent = current_indent + style.indent_step;
if (JSON_UNLIKELY(indent_string.size() < new_indent))
{
indent_string.resize(indent_string.size() * 2, ' ');
}
// first n-1 elements
for (auto i = val.m_value.array->cbegin();
i != val.m_value.array->cend() - 1; ++i)
{
o->write_characters(indent_string.c_str(), new_indent);
dump(*i, ensure_ascii, new_indent);
o->write_characters(",\n", 2);
}
// last element
assert(not val.m_value.array->empty());
o->write_characters(indent_string.c_str(), new_indent);
dump(val.m_value.array->back(), ensure_ascii, new_indent);
o->write_character('\n');
o->write_characters(indent_string.c_str(), current_indent);
o->write_character(']');
}
else
{
o->write_character('[');
// first n-1 elements
for (auto i = val.m_value.array->cbegin();
i != val.m_value.array->cend() - 1; ++i)
{
dump(*i, ensure_ascii, current_indent);
o->write_character(',');
}
// last element
assert(not val.m_value.array->empty());
dump(val.m_value.array->back(), ensure_ascii, current_indent);
o->write_character(']');
}
}
void dump_string(string_t const& str, bool ensure_ascii)
{
o->write_character('\"');