NAME

       JSON::Validator::Util - Utility functions for JSON::Validator

DESCRIPTION

       JSON::Validator::Util is a package containing utility functions for JSON::Validator. Each
       of the "FUNCTIONS" can be imported.

FUNCTIONS

   data_checksum
         $str = data_checksum $any;

       Will create a checksum for any data structure stored in $any.

   data_section
         $str = data_section "Some::Module", "file.json";
         $str = data_section "Some::Module", "file.json", {encode => 'UTF-8'};

       Same as "data_section" in Mojo::Loader, but will also look up the file in any inherited
       class.

   data_type
         $str = data_type $any;
         $str = data_type $any, [@schemas];
         $str = data_type $any, [{type => "integer", ...}];

       Returns the JSON type for $any. $str can be array, boolean, integer, null, number object
       or string. Note that a list of schemas need to be provided to differentiate between
       "integer" and "number".

   is_type
         $bool = is_type $any, $class;
         $bool = is_type $any, $type; # $type = "ARRAY", "BOOL", "HASH", "NUM" ...

       Checks if $any is a, or inherits from, $class or $type. Two special types can be checked:

       • BOOL

         Checks if $any is a boolean value. $any is considered boolean if it is an object
         inheriting from JSON::PP::Boolean or is another object that stringifies to "1" or "0".

       • NUM

         Checks if $any is indeed a number.

   json_pointer
         $str = json_pointer $path, $append;

       Will concat $append on to $path, but will also escape the two special characters "~" and
       "/" in $append.

   prefix_errors
         @errors = prefix_errors $prefix, @errors;

       Consider this internal for now.

   schema_extract
         $data       = schema_extract $any, $json_pointer;
         $data       = schema_extract $any, "/x/cool_beans/y";
         $collection = schema_extract $any, ["x", undef, "y"];
         schema_extract $any, $json_pointer, sub { my ($data, $json_pointer) = @_ };

       The basic usage is to extract data from $any, using a $json_pointer - RFC 6901
       <http://tools.ietf.org/html/rfc6901>. It can however be used in a more complex way by
       passing in an array-ref, instead of a plain string. The array-ref can contain "undef()"
       values, will result in extracting any element on that point, regardsless of value. In that
       case a Mojo::Collection will be returned.

       A callback can also be given. This callback will be called each time the $json_pointer
       matches some data, and will pass in the $json_pointer at that place.

       In addition, if the $json_pointer points to a JSON::Validator::Ref at any point, the
       "$ref" will be followed, while if you used Mojo::JSON::Pointer, it would return either the
       JSON::Validator::Ref or "undef()".

       Even though "schema_extract" has special capabilities for handling a JSON-Schema, it can
       be used for any data-structure, just like Mojo::JSON::Pointer.

   schema_type
         $str = schema_type $hash_ref;
         $str = schema_type $hash_ref, $any;

       Looks at $hash_ref and tries to figure out what kind of type the schema represents. $str
       can be "array", "const", "number", "object", "string", or fallback to empty string if the
       correct type could not be figured out.

       $any can be provided to double check the type, so if $hash_ref describes an "object", but
       $any is an array-ref, then $str will become an empty string. Example:

         # $str = "";
         $str = schema {additionalProperties => false}, [];

         # $str = "object"
         $str = schema {additionalProperties => false};
         $str = schema {additionalProperties => false}, {};

       Note that this process is relatively slow, so it will make your validation faster if you
       specify "type". Both of the two below is valid, but the one with "type" will be faster.

         {"type": "object", "properties": {}} # Faster
         {"properties": {}}                   # Slower

SEE ALSO

       JSON::Validator.