class JSON::Ext::Parser
This is the JSON parser implemented as a C extension. It can be configured to be used by setting
JSON.parser = JSON::Ext::Parser
with the method parser= in JSON.
Public Class Methods
Creates a new JSON::Ext::Parser instance for the string source.
Creates a new JSON::Ext::Parser instance for the string source.
It will be configured by the opts hash. opts can have the following keys:
opts can have the following keys:
-
max_nesting: The maximum depth of nesting allowed in the parsed data structures. Disable depth checking with :max_nesting => false|nil|0, it defaults to 100.
-
allow_nan: If set to true, allow NaN, Infinity and -Infinity in defiance of RFC 4627 to be parsed by the Parser. This option defaults to false.
-
symbolize_names: If set to true, returns symbols for the names (keys) in a JSON object. Otherwise strings are returned, which is also the default.
-
create_additions: If set to false, the Parser doesn't create additions even if a matchin class and create_id was found. This option defaults to true.
-
object_class: Defaults to Hash
-
array_class: Defaults to Array
static VALUE cParser_initialize(int argc, VALUE *argv, VALUE self)
{
VALUE source, opts;
GET_PARSER_INIT;
if (json->Vsource) {
rb_raise(rb_eTypeError, "already initialized instance");
}
rb_scan_args(argc, argv, "11", &source, &opts);
if (!NIL_P(opts)) {
opts = rb_convert_type(opts, T_HASH, "Hash", "to_hash");
if (NIL_P(opts)) {
rb_raise(rb_eArgError, "opts needs to be like a hash");
} else {
VALUE tmp = ID2SYM(i_max_nesting);
if (option_given_p(opts, tmp)) {
VALUE max_nesting = rb_hash_aref(opts, tmp);
if (RTEST(max_nesting)) {
Check_Type(max_nesting, T_FIXNUM);
json->max_nesting = FIX2INT(max_nesting);
} else {
json->max_nesting = 0;
}
} else {
json->max_nesting = 100;
}
tmp = ID2SYM(i_allow_nan);
if (option_given_p(opts, tmp)) {
json->allow_nan = RTEST(rb_hash_aref(opts, tmp)) ? 1 : 0;
} else {
json->allow_nan = 0;
}
tmp = ID2SYM(i_symbolize_names);
if (option_given_p(opts, tmp)) {
json->symbolize_names = RTEST(rb_hash_aref(opts, tmp)) ? 1 : 0;
} else {
json->symbolize_names = 0;
}
tmp = ID2SYM(i_quirks_mode);
if (option_given_p(opts, tmp)) {
VALUE quirks_mode = rb_hash_aref(opts, tmp);
json->quirks_mode = RTEST(quirks_mode) ? 1 : 0;
} else {
json->quirks_mode = 0;
}
tmp = ID2SYM(i_create_additions);
if (option_given_p(opts, tmp)) {
json->create_additions = RTEST(rb_hash_aref(opts, tmp));
} else {
json->create_additions = 0;
}
tmp = ID2SYM(i_create_id);
if (option_given_p(opts, tmp)) {
json->create_id = rb_hash_aref(opts, tmp);
} else {
json->create_id = rb_funcall(mJSON, i_create_id, 0);
}
tmp = ID2SYM(i_object_class);
if (option_given_p(opts, tmp)) {
json->object_class = rb_hash_aref(opts, tmp);
} else {
json->object_class = Qnil;
}
tmp = ID2SYM(i_array_class);
if (option_given_p(opts, tmp)) {
json->array_class = rb_hash_aref(opts, tmp);
} else {
json->array_class = Qnil;
}
tmp = ID2SYM(i_match_string);
if (option_given_p(opts, tmp)) {
VALUE match_string = rb_hash_aref(opts, tmp);
json->match_string = RTEST(match_string) ? match_string : Qnil;
} else {
json->match_string = Qnil;
}
}
} else {
json->max_nesting = 100;
json->allow_nan = 0;
json->create_additions = 1;
json->create_id = rb_funcall(mJSON, i_create_id, 0);
json->object_class = Qnil;
json->array_class = Qnil;
}
source = rb_convert_type(source, T_STRING, "String", "to_str");
if (!json->quirks_mode) {
source = convert_encoding(StringValue(source));
}
json->current_nesting = 0;
StringValue(source);
json->len = RSTRING_LEN(source);
json->source = RSTRING_PTR(source);;
json->Vsource = source;
return self;
}
Public Instance Methods
Parses the current JSON text source and returns the complete data structure as a result.
static VALUE cParser_parse(VALUE self)
{
GET_PARSER;
if (json->quirks_mode) {
return cParser_parse_quirks_mode(self);
} else {
return cParser_parse_strict(self);
}
}
Returns a true, if this parser is in quirks_mode, false otherwise.
static VALUE cParser_quirks_mode_p(VALUE self)
{
GET_PARSER;
return json->quirks_mode ? Qtrue : Qfalse;
}
Returns a copy of the current source string, that was used to construct this Parser.
static VALUE cParser_source(VALUE self)
{
GET_PARSER;
return rb_str_dup(json->Vsource);
}