Class: JSON::Ext::Generator::State

Relationships & Source Files
Inherits:	Object
Defined in:	ext/json/generator/generator.c

Class Method Summary

.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.
.new(opts = {}) constructor

Instantiates a new State object, configured by opts.

Instance Attribute Summary

#allow_nan? ⇒ Boolean readonly

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

This string is put at the end of a line that holds a ::JSON array.
#array_nl=(array_nl) rw

This string is put at the end of a line that holds a ::JSON array.
#ascii_only? ⇒ Boolean readonly

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

This integer returns the current initial length of the buffer.
#buffer_initial_length=(length) rw

This sets the initial length of the buffer to length, if length > 0, otherwise its value isn’t changed.
#check_circular? ⇒ Boolean readonly

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

This integer returns the current depth of data structure nesting.
#depth=(depth) rw

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.
#indent rw

Returns the string that is used to indent levels in the ::JSON text.
#indent=(indent) rw

Sets the string that is used to indent levels in the ::JSON text.
#max_nesting rw

This integer returns the maximum level of data structure nesting in the generated ::JSON, max_nesting = 0 if no maximum is checked.
#max_nesting=(depth) rw

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.
#object_nl rw

This string is put at the end of a line that holds a ::JSON object (or Hash).
#object_nl=(object_nl) rw

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

Returns the string that is used to insert a space between the tokens in a ::JSON string.
#space=(space) rw

Sets space to the string that is used to insert a space between the tokens in a ::JSON string.
#space_before rw

Returns the string that is used to insert a space before the ‘:’ in ::JSON objects.
#space_before=(space_before) rw

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

Instance Method Summary

#[](name)

Returns the value returned by method name.
#[]=(name, value)

Sets the attribute name to value.
#configure(opts)

Alias for #merge.
#generate(obj)

Generates a valid ::JSON document from object obj and returns the result.
#initialize_copy(orig)

Initializes this object from orig if it can be duplicated/cloned and returns it.
#merge(opts) (also: #configure)

Configure this State instance with the Hash opts, and return itself.
#to_h ⇒ Hash (also: #to_hash)

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

Alias for #to_h.

Constructor Details

.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.
buffer_initial_length: sets the initial length of the generator’s internal buffer.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 976


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;
}

Class Method Details

.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.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1021


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 {
        if (NIL_P(CJSON_SAFE_STATE_PROTOTYPE)) {
            CJSON_SAFE_STATE_PROTOTYPE = rb_const_get(mJSON, i_SAFE_STATE_PROTOTYPE);
        }
        return rb_funcall(CJSON_SAFE_STATE_PROTOTYPE, i_dup, 0);
    }
}

Instance Attribute Details

#allow_nan? ⇒ `Boolean` (readonly)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1261


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

#array_nl (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1187


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) (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1198


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? ⇒ `Boolean` (readonly)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1273


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

#buffer_initial_length (rw)

This integer returns the current initial length of the buffer.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1309


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

#buffer_initial_length=(length) (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1321


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? ⇒ `Boolean` (readonly)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1224


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

#depth (rw)

This integer returns the current depth of data structure nesting.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1284


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

#depth=(depth) (rw)

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.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1296


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

#indent (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1040


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) (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1051


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;
}

#max_nesting (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1236


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

#max_nesting=(depth) (rw)

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.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1248


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

#object_nl (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1151


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) (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1163


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;
}

#space (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1077


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) (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1089


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 (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1114


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) (rw)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 1125


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;
}

Instance Method Details

#[](name)

Returns the value returned by method name.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 689


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_ivar_get(self, rb_intern_str(rb_str_concat(rb_str_new2("@"), name)));
    }
}

#[]=(name, value)

Sets the attribute name to value.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 704


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;
}

#merge(opts) #configure(opts)

Alias for #merge.

#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 ::JSON::GeneratorError exception.

[ GitHub ]

# File 'ext/json/generator/generator.c', line 950


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

#initialize_copy(orig)

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 993


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;
}

#merge(opts) Also known as: #configure

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 562


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);
    return self;
}

#to_h ⇒ `Hash` Also known as: #to_hash

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

[ GitHub ]

# File 'ext/json/generator/generator.c', line 666


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_depth), LONG2FIX(state->depth));
    rb_hash_aset(result, ID2SYM(i_buffer_initial_length), LONG2FIX(state->buffer_initial_length));
    return result;
}

#to_h ⇒ `Hash` #to_hash ⇒ `Hash`

Alias for #to_h.

Class: JSON::Ext::Generator::State

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(opts = {})

Class Method Details

.from_state(opts)

Instance Attribute Details

#allow_nan? ⇒ Boolean (readonly)

#array_nl (rw)

#array_nl=(array_nl) (rw)

#ascii_only? ⇒ Boolean (readonly)

#buffer_initial_length (rw)

#buffer_initial_length=(length) (rw)

#check_circular? ⇒ Boolean (readonly)

#depth (rw)

#depth=(depth) (rw)

#indent (rw)

#indent=(indent) (rw)

#max_nesting (rw)

#max_nesting=(depth) (rw)

#object_nl (rw)

#object_nl=(object_nl) (rw)

#space (rw)

#space=(space) (rw)

#space_before (rw)

#space_before=(space_before) (rw)

Instance Method Details

#[](name)

#[]=(name, value)

#merge(opts) #configure(opts)

#generate(obj)

#initialize_copy(orig)

#merge(opts) Also known as: #configure

#to_h ⇒ Hash Also known as: #to_hash

#to_h ⇒ Hash #to_hash ⇒ Hash

#allow_nan? ⇒ `Boolean` (readonly)

#ascii_only? ⇒ `Boolean` (readonly)

#check_circular? ⇒ `Boolean` (readonly)

#to_h ⇒ `Hash` Also known as: #to_hash

#to_h ⇒ `Hash` #to_hash ⇒ `Hash`