/*

 * lttng-ust-dynamic-type.c

 *

 * UST dynamic type implementation.

 *

 * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; only

 * version 2.1 of the License.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#define _GNU_SOURCE

#include <stdio.h>

#include <stdint.h>

#include <stddef.h>

#include <inttypes.h>

#include <helper.h>

#include <lttng/ust-dynamic-type.h>

#define ctf_enum_value(_string, _value)					\

	{								\

		.start = {						\

			.signedness = lttng_is_signed_type(__typeof__(_value)), \

			.value = lttng_is_signed_type(__typeof__(_value)) ? \

				(long long) (_value) : (_value),	\

		},							\

		.end = {						\

			.signedness = lttng_is_signed_type(__typeof__(_value)), \

			.value = lttng_is_signed_type(__typeof__(_value)) ? \

				(long long) (_value) : (_value),	\

		},							\

		.string = (_string),					\

	},

static const struct lttng_enum_entry dt_enum[_NR_LTTNG_UST_DYNAMIC_TYPES] = {

	[LTTNG_UST_DYNAMIC_TYPE_NONE] = ctf_enum_value("_none", 0)

	[LTTNG_UST_DYNAMIC_TYPE_S8] = ctf_enum_value("_int8", 1)

	[LTTNG_UST_DYNAMIC_TYPE_S16] = ctf_enum_value("_int16", 2)

	[LTTNG_UST_DYNAMIC_TYPE_S32] = ctf_enum_value("_int32", 3)

	[LTTNG_UST_DYNAMIC_TYPE_S64] = ctf_enum_value("_int64", 4)

	[LTTNG_UST_DYNAMIC_TYPE_U8] = ctf_enum_value("_uint8", 5)

	[LTTNG_UST_DYNAMIC_TYPE_U16] = ctf_enum_value("_uint16", 6)

	[LTTNG_UST_DYNAMIC_TYPE_U32] = ctf_enum_value("_uint32", 7)

	[LTTNG_UST_DYNAMIC_TYPE_U64] = ctf_enum_value("_uint64", 8)

	[LTTNG_UST_DYNAMIC_TYPE_FLOAT] = ctf_enum_value("_float", 9)

	[LTTNG_UST_DYNAMIC_TYPE_DOUBLE] = ctf_enum_value("_double", 10)

	[LTTNG_UST_DYNAMIC_TYPE_STRING] = ctf_enum_value("_string", 11)

};

static const struct lttng_enum_desc dt_enum_desc = {

	.name = "dynamic_type_enum",

	.entries = dt_enum,

	.nr_entries = LTTNG_ARRAY_SIZE(dt_enum),

};

const struct lttng_event_field dt_var_fields[_NR_LTTNG_UST_DYNAMIC_TYPES] = {

	[LTTNG_UST_DYNAMIC_TYPE_NONE] = {

		.name = "none",

		.type = {

			.atype = atype_struct,

			.u._struct.nr_fields = 0,	/* empty struct. */

		},

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_S8] = {

		.name = "int8",

		.type = __type_integer(int8_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_S16] = {

		.name = "int16",

		.type = __type_integer(int16_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_S32] = {

		.name = "int32",

		.type = __type_integer(int32_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_S64] = {

		.name = "int64",

		.type = __type_integer(int64_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_U8] = {

		.name = "uint8",

		.type = __type_integer(uint8_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_U16] = {

		.name = "uint16",

		.type = __type_integer(uint16_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_U32] = {

		.name = "uint32",

		.type = __type_integer(uint32_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_U64] = {

		.name = "uint64",

		.type = __type_integer(uint64_t, BYTE_ORDER, 10, none),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_FLOAT] = {

		.name = "float",

		.type = __type_float(float),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_DOUBLE] = {

		.name = "double",

		.type = __type_float(double),

		.nowrite = 0,

	},

	[LTTNG_UST_DYNAMIC_TYPE_STRING] = {

		.name = "string",

		.type = {

			.atype = atype_string,

			.u.basic.string.encoding = lttng_encode_UTF8,

		},

		.nowrite = 0,

	},

};

static const struct lttng_event_field dt_enum_field = {

	.name = NULL,

	.type.atype = atype_enum,

	.type.u.basic.enumeration.desc = &dt_enum_desc,

	.type.u.basic.enumeration.container_type = {

		.size = sizeof(char) * CHAR_BIT,

		.alignment = lttng_alignof(char) * CHAR_BIT,

		.signedness = lttng_is_signed_type(char),

		.reverse_byte_order = 0,

		.base = 10,

		.encoding = lttng_encode_none,

	},

	.nowrite = 0,

};

const struct lttng_event_field *lttng_ust_dynamic_type_field(int64_t value)

{

	if (value >= _NR_LTTNG_UST_DYNAMIC_TYPES || value < 0)

		return NULL;

	return &dt_var_fields[value];

}

int lttng_ust_dynamic_type_choices(size_t *nr_choices, const struct lttng_event_field **choices)

{

	*nr_choices = _NR_LTTNG_UST_DYNAMIC_TYPES;

	*choices = dt_var_fields;

	return 0;

}

const struct lttng_event_field *lttng_ust_dynamic_type_tag_field(void)

{

	return &dt_enum_field;

}