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Add json::null::as_null implementation

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This commit is contained in:
Danny Robson 2012-04-13 11:15:08 +10:00
parent c0476c553e
commit 86b5abde08
2 changed files with 9 additions and 1 deletions
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5
json.cpp.rl
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@ -305,6 +305,11 @@ json::node::as_boolean (void) const
{ throw parse_error ("node is not a boolean"); } { throw parse_error ("node is not a boolean"); }
const json::null&
json::node::as_null (void) const
{ throw parse_error ("node is not a null"); }
bool bool
json::node::operator!=(const node &rhs) const json::node::operator!=(const node &rhs) const
{ return !(*this == rhs); } { return !(*this == rhs); }

5
json.hpp
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@ -55,6 +55,7 @@ namespace json {
virtual const string& as_string (void) const; virtual const string& as_string (void) const;
virtual const number& as_number (void) const; virtual const number& as_number (void) const;
virtual const boolean& as_boolean (void) const; virtual const boolean& as_boolean (void) const;
virtual const null& as_null (void) const;
virtual bool is_object (void) const { return false; } virtual bool is_object (void) const { return false; }
virtual bool is_array (void) const { return false; } virtual bool is_array (void) const { return false; }
@ -206,11 +207,13 @@ namespace json {
/// Represents a JSON null value. /// Represents a JSON null value.
class null : public node { class null : public node {
public: public:
virtual bool is_null (void) const { return true; }
virtual bool operator==(const null&) const { return true; } virtual bool operator==(const null&) const { return true; }
virtual bool operator==(const node &rhs) const virtual bool operator==(const node &rhs) const
{ return rhs == *this; } { return rhs == *this; }
virtual bool is_null (void) const { return true; }
virtual const null& as_null (void) const { return *this; }
virtual std::ostream& write (std::ostream &os) const; virtual std::ostream& write (std::ostream &os) const;
}; };