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Code Issues Releases Wiki Activity

ircd::json: Add has()/get() to json::doc.

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This commit is contained in:
Jason Volk 2017-03-20 23:29:17 -07:00
parent 0d09170507
commit 4d2e41970b
1 changed files with 18 additions and 5 deletions
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23
include/ircd/json/doc.h
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@ -41,17 +41,17 @@ struct doc
using difference_type = ptrdiff_t;
using key_compare = std::less<member>;
bool contains(const string_view &) const;
const_iterator end() const;
const_iterator begin() const;
bool has(const string_view &name) const;
const_iterator find(const string_view &name) const;
size_t count() const;
string_view at(const string_view &name) const;
template<class T> T at(const string_view &name) const;
string_view operator[](const string_view &name) const;
template<class T = string_view> T get(const string_view &name, const T &def = T()) const;
explicit operator std::string() const;
@ -116,6 +116,20 @@ struct doc::const_iterator
} // namespace json
} // namespace ircd
template<class T>
T
ircd::json::doc::get(const string_view &name,
const T &def)
const try
{
const string_view sv(operator[](name));
return !sv.empty()? lex_cast<T>(sv) : def;
}
catch(const bad_lex_cast &e)
{
throw type_error("'%s' must cast to type %s", name, typeid(T).name());
}
inline ircd::string_view
ircd::json::doc::operator[](const string_view &name)
const
@ -183,11 +197,10 @@ const
}
inline bool
ircd::json::doc::contains(const string_view &s)
ircd::json::doc::has(const string_view &name)
const
{
return s.begin() >= this->string_view::begin() &&
s.end() <= this->string_view::end();
return find(name) != end();
}
inline bool