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

Inherits:
Object
  • Object
show all
Defined in:
ext/json/ext/generator/generator.c

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#new(opts = {}) ⇒ Object

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.



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# File 'ext/json/ext/generator/generator.c', line 1142

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) ⇒ Object

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.



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

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);
    }
}

Instance Method Details

#[](name) ⇒ Object

Returns the value returned by method name.



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# File 'ext/json/ext/generator/generator.c', line 800

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) ⇒ Object

Sets the attribute name to value.



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# File 'ext/json/ext/generator/generator.c', line 815

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? ⇒ Boolean

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

Returns:

  • (Boolean) 


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# File 'ext/json/ext/generator/generator.c', line 1480

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

#array_nl ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1350

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) ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1361

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

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

Returns:

  • (Boolean) 


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# File 'ext/json/ext/generator/generator.c', line 1492

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

#buffer_initial_length ⇒ Object

This integer returns the current initial length of the buffer.



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# File 'ext/json/ext/generator/generator.c', line 1528

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

#buffer_initial_length=(length) ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1540

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

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

Returns:

  • (Boolean) 


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# File 'ext/json/ext/generator/generator.c', line 1387

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

#configure(opts) ⇒ Object Also known as: merge

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



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# File 'ext/json/ext/generator/generator.c', line 663

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;
}

#depth ⇒ Object

This integer returns the current depth of data structure nesting.



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# File 'ext/json/ext/generator/generator.c', line 1503

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

#depth=(depth) ⇒ Object

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.



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# File 'ext/json/ext/generator/generator.c', line 1515

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

#generate(obj) ⇒ Object

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.



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

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

#indent ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1203

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) ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1214

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) ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1159

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 ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1399

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

#max_nesting=(depth) ⇒ Object

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.



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# File 'ext/json/ext/generator/generator.c', line 1411

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 ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1314

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) ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1326

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 ⇒ Object Also known as: escape_slash

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



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# File 'ext/json/ext/generator/generator.c', line 1424

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

#script_safe=(enable) ⇒ Object Also known as: escape_slash=

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



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# File 'ext/json/ext/generator/generator.c', line 1436

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

#script_safe ⇒ Boolean Also known as: escape_slash?

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

Returns:

  • (Boolean) 


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# File 'ext/json/ext/generator/generator.c', line 1424

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

#space ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1240

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) ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1252

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 ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1277

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) ⇒ Object

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



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# File 'ext/json/ext/generator/generator.c', line 1288

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 ⇒ Object

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.



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# File 'ext/json/ext/generator/generator.c', line 1451

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

#strict=(enable) ⇒ Object

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.



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# File 'ext/json/ext/generator/generator.c', line 1467

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

#strict ⇒ Boolean

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.

Returns:

  • (Boolean) 


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# File 'ext/json/ext/generator/generator.c', line 1451

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

#to_h ⇒ Object Also known as: to_hash

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



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# File 'ext/json/ext/generator/generator.c', line 775

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;
}