class JSON::Ext::Generator::State

Public Class Methods

from_state(opts)

Creates a State object from opts, which ought to be Hash to create a new State instance configured by opts, something else to create an unconfigured instance. If opts is a State object, it is just returned.

static VALUE cState_from_state_s(VALUE self, VALUE opts)
{
    if (rb_obj_is_kind_of(opts, self)) {
        return opts;
    } else if (rb_obj_is_kind_of(opts, rb_cHash)) {
        return rb_funcall(self, i_new, 1, opts);
    } else {
        return rb_class_new_instance(0, NULL, cState);
    }
}

new(opts = {})

Instantiates a new State object, configured by opts.

opts can have the following keys:

indent: a string used to indent levels (default: ”),
space: a string that is put after, a : or , delimiter (default: ”),
space_before: a string that is put before a : pair delimiter (default: ”),
object_nl: a string that is put at the end of a JSON object (default: ”),
array_nl: a string that is put at the end of a JSON array (default: ”),
allow_nan: true if NaN, Infinity, and -Infinity should be generated, otherwise an exception is thrown, if these values are encountered. This options defaults to false.
ascii_only: true if only ASCII characters should be generated. This option defaults to false.
buffer_initial_length: sets the initial length of the generator’s internal buffer.

static VALUE cState_initialize(int argc, VALUE *argv, VALUE self)
{
    VALUE opts;
    GET_STATE(self);
    state->max_nesting = 100;
    state->buffer_initial_length = FBUFFER_INITIAL_LENGTH_DEFAULT;
    rb_scan_args(argc, argv, "01", &opts);
    if (!NIL_P(opts)) cState_configure(self, opts);
    return self;
}

Public Instance Methods

[](name)

Returns the value returned by method name.

static VALUE cState_aref(VALUE self, VALUE name)
{
    name = rb_funcall(name, i_to_s, 0);
    if (RTEST(rb_funcall(self, i_respond_to_p, 1, name))) {
        return rb_funcall(self, i_send, 1, name);
    } else {
        return rb_attr_get(self, rb_intern_str(rb_str_concat(rb_str_new2("@"), name)));
    }
}

[]=(name, value)

Sets the attribute name to value.

static VALUE cState_aset(VALUE self, VALUE name, VALUE value)
{
    VALUE name_writer;

    name = rb_funcall(name, i_to_s, 0);
    name_writer = rb_str_cat2(rb_str_dup(name), "=");
    if (RTEST(rb_funcall(self, i_respond_to_p, 1, name_writer))) {
        return rb_funcall(self, i_send, 2, name_writer, value);
    } else {
        rb_ivar_set(self, rb_intern_str(rb_str_concat(rb_str_new2("@"), name)), value);
    }
    return Qnil;
}

allow_nan?

Returns true, if NaN, Infinity, and -Infinity should be generated, otherwise returns false.

static VALUE cState_allow_nan_p(VALUE self)
{
    GET_STATE(self);
    return state->allow_nan ? Qtrue : Qfalse;
}

array_nl()

This string is put at the end of a line that holds a JSON array.

static VALUE cState_array_nl(VALUE self)
{
    GET_STATE(self);
    return state->array_nl ? rb_str_new(state->array_nl, state->array_nl_len) : rb_str_new2("");
}

array_nl=(array_nl)

This string is put at the end of a line that holds a JSON array.

static VALUE cState_array_nl_set(VALUE self, VALUE array_nl)
{
    unsigned long len;
    GET_STATE(self);
    Check_Type(array_nl, T_STRING);
    len = RSTRING_LEN(array_nl);
    if (len == 0) {
        if (state->array_nl) {
            ruby_xfree(state->array_nl);
            state->array_nl = NULL;
        }
    } else {
        if (state->array_nl) ruby_xfree(state->array_nl);
        state->array_nl = fstrndup(RSTRING_PTR(array_nl), len);
        state->array_nl_len = len;
    }
    return Qnil;
}

ascii_only?

Returns true, if only ASCII characters should be generated. Otherwise returns false.

static VALUE cState_ascii_only_p(VALUE self)
{
    GET_STATE(self);
    return state->ascii_only ? Qtrue : Qfalse;
}

buffer_initial_length

This integer returns the current initial length of the buffer.

static VALUE cState_buffer_initial_length(VALUE self)
{
    GET_STATE(self);
    return LONG2FIX(state->buffer_initial_length);
}

buffer_initial_length=(length)

This sets the initial length of the buffer to length, if length > 0, otherwise its value isn’t changed.

static VALUE cState_buffer_initial_length_set(VALUE self, VALUE buffer_initial_length)
{
    long initial_length;
    GET_STATE(self);
    Check_Type(buffer_initial_length, T_FIXNUM);
    initial_length = FIX2LONG(buffer_initial_length);
    if (initial_length > 0) {
        state->buffer_initial_length = initial_length;
    }
    return Qnil;
}

check_circular?

Returns true, if circular data structures should be checked, otherwise returns false.

static VALUE cState_check_circular_p(VALUE self)
{
    GET_STATE(self);
    return state->max_nesting ? Qtrue : Qfalse;
}

configure(opts)

Configure this State instance with the Hash opts, and return itself.

static VALUE cState_configure(VALUE self, VALUE opts)
{
    VALUE tmp;
    GET_STATE(self);
    tmp = rb_check_convert_type(opts, T_HASH, "Hash", "to_hash");
    if (NIL_P(tmp)) tmp = rb_convert_type(opts, T_HASH, "Hash", "to_h");
    opts = tmp;
    tmp = rb_hash_aref(opts, ID2SYM(i_indent));
    if (RTEST(tmp)) {
        unsigned long len;
        Check_Type(tmp, T_STRING);
        len = RSTRING_LEN(tmp);
        state->indent = fstrndup(RSTRING_PTR(tmp), len + 1);
        state->indent_len = len;
    }
    tmp = rb_hash_aref(opts, ID2SYM(i_space));
    if (RTEST(tmp)) {
        unsigned long len;
        Check_Type(tmp, T_STRING);
        len = RSTRING_LEN(tmp);
        state->space = fstrndup(RSTRING_PTR(tmp), len + 1);
        state->space_len = len;
    }
    tmp = rb_hash_aref(opts, ID2SYM(i_space_before));
    if (RTEST(tmp)) {
        unsigned long len;
        Check_Type(tmp, T_STRING);
        len = RSTRING_LEN(tmp);
        state->space_before = fstrndup(RSTRING_PTR(tmp), len + 1);
        state->space_before_len = len;
    }
    tmp = rb_hash_aref(opts, ID2SYM(i_array_nl));
    if (RTEST(tmp)) {
        unsigned long len;
        Check_Type(tmp, T_STRING);
        len = RSTRING_LEN(tmp);
        state->array_nl = fstrndup(RSTRING_PTR(tmp), len + 1);
        state->array_nl_len = len;
    }
    tmp = rb_hash_aref(opts, ID2SYM(i_object_nl));
    if (RTEST(tmp)) {
        unsigned long len;
        Check_Type(tmp, T_STRING);
        len = RSTRING_LEN(tmp);
        state->object_nl = fstrndup(RSTRING_PTR(tmp), len + 1);
        state->object_nl_len = len;
    }
    tmp = ID2SYM(i_max_nesting);
    state->max_nesting = 100;
    if (option_given_p(opts, tmp)) {
        VALUE max_nesting = rb_hash_aref(opts, tmp);
        if (RTEST(max_nesting)) {
            Check_Type(max_nesting, T_FIXNUM);
            state->max_nesting = FIX2LONG(max_nesting);
        } else {
            state->max_nesting = 0;
        }
    }
    tmp = ID2SYM(i_depth);
    state->depth = 0;
    if (option_given_p(opts, tmp)) {
        VALUE depth = rb_hash_aref(opts, tmp);
        if (RTEST(depth)) {
            Check_Type(depth, T_FIXNUM);
            state->depth = FIX2LONG(depth);
        } else {
            state->depth = 0;
        }
    }
    tmp = ID2SYM(i_buffer_initial_length);
    if (option_given_p(opts, tmp)) {
        VALUE buffer_initial_length = rb_hash_aref(opts, tmp);
        if (RTEST(buffer_initial_length)) {
            long initial_length;
            Check_Type(buffer_initial_length, T_FIXNUM);
            initial_length = FIX2LONG(buffer_initial_length);
            if (initial_length > 0) state->buffer_initial_length = initial_length;
        }
    }
    tmp = rb_hash_aref(opts, ID2SYM(i_allow_nan));
    state->allow_nan = RTEST(tmp);
    tmp = rb_hash_aref(opts, ID2SYM(i_ascii_only));
    state->ascii_only = RTEST(tmp);
    tmp = rb_hash_aref(opts, ID2SYM(i_script_safe));
    state->script_safe = RTEST(tmp);
    if (!state->script_safe) {
        tmp = rb_hash_aref(opts, ID2SYM(i_escape_slash));
        state->script_safe = RTEST(tmp);
    }
    tmp = rb_hash_aref(opts, ID2SYM(i_strict));
    state->strict = RTEST(tmp);
    return self;
}

Also aliased as: merge

depth

This integer returns the current depth of data structure nesting.

static VALUE cState_depth(VALUE self)
{
    GET_STATE(self);
    return LONG2FIX(state->depth);
}

depth=(depth)

This sets the maximum level of data structure nesting in the generated JSON to the integer depth, max_nesting = 0 if no maximum should be checked.

static VALUE cState_depth_set(VALUE self, VALUE depth)
{
    GET_STATE(self);
    Check_Type(depth, T_FIXNUM);
    state->depth = FIX2LONG(depth);
    return Qnil;
}

script_safe

If this boolean is true, the forward slashes will be escaped in the json output.

Alias for: script_safe

escape_slash=

Alias for: script_safe=

escape_slash? ()

If this boolean is true, the forward slashes will be escaped in the json output.

Alias for: script_safe?

generate(obj)

Generates a valid JSON document from object obj and returns the result. If no valid JSON document can be created this method raises a GeneratorError exception.

static VALUE cState_generate(VALUE self, VALUE obj)
{
    VALUE result = cState_partial_generate(self, obj);
    GET_STATE(self);
    (void)state;
    return result;
}

indent()

Returns the string that is used to indent levels in the JSON text.

static VALUE cState_indent(VALUE self)
{
    GET_STATE(self);
    return state->indent ? rb_str_new(state->indent, state->indent_len) : rb_str_new2("");
}

indent=(indent)

Sets the string that is used to indent levels in the JSON text.

static VALUE cState_indent_set(VALUE self, VALUE indent)
{
    unsigned long len;
    GET_STATE(self);
    Check_Type(indent, T_STRING);
    len = RSTRING_LEN(indent);
    if (len == 0) {
        if (state->indent) {
            ruby_xfree(state->indent);
            state->indent = NULL;
            state->indent_len = 0;
        }
    } else {
        if (state->indent) ruby_xfree(state->indent);
        state->indent = fstrndup(RSTRING_PTR(indent), len);
        state->indent_len = len;
    }
    return Qnil;
}

initialize_copy(orig)

Initializes this object from orig if it can be duplicated/cloned and returns it.

static VALUE cState_init_copy(VALUE obj, VALUE orig)
{
    JSON_Generator_State *objState, *origState;

    if (obj == orig) return obj;
    GET_STATE_TO(obj, objState);
    GET_STATE_TO(orig, origState);
    if (!objState) rb_raise(rb_eArgError, "unallocated JSON::State");

    MEMCPY(objState, origState, JSON_Generator_State, 1);
    objState->indent = fstrndup(origState->indent, origState->indent_len);
    objState->space = fstrndup(origState->space, origState->space_len);
    objState->space_before = fstrndup(origState->space_before, origState->space_before_len);
    objState->object_nl = fstrndup(origState->object_nl, origState->object_nl_len);
    objState->array_nl = fstrndup(origState->array_nl, origState->array_nl_len);
    if (origState->array_delim) objState->array_delim = fbuffer_dup(origState->array_delim);
    if (origState->object_delim) objState->object_delim = fbuffer_dup(origState->object_delim);
    if (origState->object_delim2) objState->object_delim2 = fbuffer_dup(origState->object_delim2);
    return obj;
}

max_nesting

This integer returns the maximum level of data structure nesting in the generated JSON, max_nesting = 0 if no maximum is checked.

static VALUE cState_max_nesting(VALUE self)
{
    GET_STATE(self);
    return LONG2FIX(state->max_nesting);
}

max_nesting=(depth)

This sets the maximum level of data structure nesting in the generated JSON to the integer depth, max_nesting = 0 if no maximum should be checked.

static VALUE cState_max_nesting_set(VALUE self, VALUE depth)
{
    GET_STATE(self);
    Check_Type(depth, T_FIXNUM);
    return state->max_nesting = FIX2LONG(depth);
}

merge

Alias for: configure

object_nl()

This string is put at the end of a line that holds a JSON object (or Hash).

static VALUE cState_object_nl(VALUE self)
{
    GET_STATE(self);
    return state->object_nl ? rb_str_new(state->object_nl, state->object_nl_len) : rb_str_new2("");
}

object_nl=(object_nl)

This string is put at the end of a line that holds a JSON object (or Hash).

static VALUE cState_object_nl_set(VALUE self, VALUE object_nl)
{
    unsigned long len;
    GET_STATE(self);
    Check_Type(object_nl, T_STRING);
    len = RSTRING_LEN(object_nl);
    if (len == 0) {
        if (state->object_nl) {
            ruby_xfree(state->object_nl);
            state->object_nl = NULL;
        }
    } else {
        if (state->object_nl) ruby_xfree(state->object_nl);
        state->object_nl = fstrndup(RSTRING_PTR(object_nl), len);
        state->object_nl_len = len;
    }
    return Qnil;
}

script_safe

If this boolean is true, the forward slashes will be escaped in the json output.

static VALUE cState_script_safe(VALUE self)
{
    GET_STATE(self);
    return state->script_safe ? Qtrue : Qfalse;
}

Also aliased as: script_safe?, escape_slash

script_safe=(enable)

This sets whether or not the forward slashes will be escaped in the json output.

static VALUE cState_script_safe_set(VALUE self, VALUE enable)
{
    GET_STATE(self);
    state->script_safe = RTEST(enable);
    return Qnil;
}

Also aliased as: escape_slash=

script_safe

If this boolean is true, the forward slashes will be escaped in the json output.

Also aliased as: escape_slash?

Alias for: script_safe

space()

Returns the string that is used to insert a space between the tokens in a JSON string.

static VALUE cState_space(VALUE self)
{
    GET_STATE(self);
    return state->space ? rb_str_new(state->space, state->space_len) : rb_str_new2("");
}

space=(space)

Sets space to the string that is used to insert a space between the tokens in a JSON string.

static VALUE cState_space_set(VALUE self, VALUE space)
{
    unsigned long len;
    GET_STATE(self);
    Check_Type(space, T_STRING);
    len = RSTRING_LEN(space);
    if (len == 0) {
        if (state->space) {
            ruby_xfree(state->space);
            state->space = NULL;
            state->space_len = 0;
        }
    } else {
        if (state->space) ruby_xfree(state->space);
        state->space = fstrndup(RSTRING_PTR(space), len);
        state->space_len = len;
    }
    return Qnil;
}

space_before()

Returns the string that is used to insert a space before the ‘:’ in JSON objects.

static VALUE cState_space_before(VALUE self)
{
    GET_STATE(self);
    return state->space_before ? rb_str_new(state->space_before, state->space_before_len) : rb_str_new2("");
}

space_before=(space_before)

Sets the string that is used to insert a space before the ‘:’ in JSON objects.

static VALUE cState_space_before_set(VALUE self, VALUE space_before)
{
    unsigned long len;
    GET_STATE(self);
    Check_Type(space_before, T_STRING);
    len = RSTRING_LEN(space_before);
    if (len == 0) {
        if (state->space_before) {
            ruby_xfree(state->space_before);
            state->space_before = NULL;
            state->space_before_len = 0;
        }
    } else {
        if (state->space_before) ruby_xfree(state->space_before);
        state->space_before = fstrndup(RSTRING_PTR(space_before), len);
        state->space_before_len = len;
    }
    return Qnil;
}

strict

If this boolean is false, types unsupported by the JSON format will be serialized as strings. If this boolean is true, types unsupported by the JSON format will raise a JSON::GeneratorError.

static VALUE cState_strict(VALUE self)
{
    GET_STATE(self);
    return state->strict ? Qtrue : Qfalse;
}

Also aliased as: strict?

strict=(enable)

This sets whether or not to serialize types unsupported by the JSON format as strings. If this boolean is false, types unsupported by the JSON format will be serialized as strings. If this boolean is true, types unsupported by the JSON format will raise a JSON::GeneratorError.

static VALUE cState_strict_set(VALUE self, VALUE enable)
{
    GET_STATE(self);
    state->strict = RTEST(enable);
    return Qnil;
}

strict

If this boolean is false, types unsupported by the JSON format will be serialized as strings. If this boolean is true, types unsupported by the JSON format will raise a JSON::GeneratorError.

Alias for: strict

to_h

Returns the configuration instance variables as a hash, that can be passed to the configure method.

static VALUE cState_to_h(VALUE self)
{
    VALUE result = rb_hash_new();
    GET_STATE(self);
    set_state_ivars(result, self);
    rb_hash_aset(result, ID2SYM(i_indent), rb_str_new(state->indent, state->indent_len));
    rb_hash_aset(result, ID2SYM(i_space), rb_str_new(state->space, state->space_len));
    rb_hash_aset(result, ID2SYM(i_space_before), rb_str_new(state->space_before, state->space_before_len));
    rb_hash_aset(result, ID2SYM(i_object_nl), rb_str_new(state->object_nl, state->object_nl_len));
    rb_hash_aset(result, ID2SYM(i_array_nl), rb_str_new(state->array_nl, state->array_nl_len));
    rb_hash_aset(result, ID2SYM(i_allow_nan), state->allow_nan ? Qtrue : Qfalse);
    rb_hash_aset(result, ID2SYM(i_ascii_only), state->ascii_only ? Qtrue : Qfalse);
    rb_hash_aset(result, ID2SYM(i_max_nesting), LONG2FIX(state->max_nesting));
    rb_hash_aset(result, ID2SYM(i_script_safe), state->script_safe ? Qtrue : Qfalse);
    rb_hash_aset(result, ID2SYM(i_strict), state->strict ? Qtrue : Qfalse);
    rb_hash_aset(result, ID2SYM(i_depth), LONG2FIX(state->depth));
    rb_hash_aset(result, ID2SYM(i_buffer_initial_length), LONG2FIX(state->buffer_initial_length));
    return result;
}

Also aliased as: to_hash

to_h

Returns the configuration instance variables as a hash, that can be passed to the configure method.

Alias for: to_h