Module: JSON::Ext::Generator::GeneratorMethods::Array

Defined in:
ext/json/ext/generator/generator.c

Instance Method Summary collapse

Instance Method Details

#to_json(state = nil, depth = 0) ⇒ Object

Returns a JSON string containing a JSON array, that is unparsed from this Array instance. state is a JSON::State object, that can also be used to configure the produced JSON string output further. depth is used to find out nesting depth, to indent accordingly.



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# File 'ext/json/ext/generator/generator.c', line 242

static VALUE mArray_to_json(int argc, VALUE *argv, VALUE self) {
    VALUE Vstate, Vdepth, result;

    rb_scan_args(argc, argv, "02", &Vstate, &Vdepth);
    if (NIL_P(Vstate)) {
        long i, len = RARRAY_LEN(self);
        result = rb_str_buf_new(2 + 2 * len);
        rb_str_buf_cat2(result, "[");
        OBJ_INFECT(result, self);
        for (i = 0;  i < len; i++) {
            VALUE element = RARRAY_PTR(self)[i];
            OBJ_INFECT(result, element);
            if (i > 0) rb_str_buf_cat2(result, ",");
            element = rb_funcall(element, i_to_json, 0);
            Check_Type(element, T_STRING);
            rb_str_buf_append(result, element);
        }
        rb_str_buf_cat2(result, "]");
    } else {
        result = mArray_json_transfrom(self, Vstate, Vdepth);
    }
    OBJ_INFECT(result, self);
    return result;
}