nes-proj/os/storage/antelope/lvm.h
2018-08-27 15:58:57 +02:00

145 lines
4.4 KiB
C

/*
* Copyright (c) 2010, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* Definitions and declarations for the Propositional Logic Engine.
* \author
* Nicolas Tsiftes <nvt@sics.se>
*/
#ifndef LVM_H
#define LVM_H
#include <stdlib.h>
#include "db-options.h"
enum lvm_status {
LVM_FALSE = 0,
LVM_TRUE = 1,
LVM_INVALID_IDENTIFIER = 2,
LVM_SEMANTIC_ERROR = 3,
LVM_MATH_ERROR = 4,
LVM_STACK_OVERFLOW = 5,
LVM_TYPE_ERROR = 6,
LVM_VARIABLE_LIMIT_REACHED = 7,
LVM_EXECUTION_ERROR = 8,
LVM_DERIVATION_ERROR = 9
};
typedef enum lvm_status lvm_status_t;
#define LVM_ERROR(x) (x >= 2)
typedef int lvm_ip_t;
struct lvm_instance {
unsigned char *code;
lvm_ip_t size;
lvm_ip_t end;
lvm_ip_t ip;
unsigned error;
};
typedef struct lvm_instance lvm_instance_t;
enum node_type {
LVM_ARITH_OP = 0x10,
LVM_OPERAND = 0x20,
LVM_CMP_OP = 0x40,
LVM_CONNECTIVE = 0x80
};
typedef enum node_type node_type_t;
enum operator {
LVM_ADD = LVM_ARITH_OP | 1,
LVM_SUB = LVM_ARITH_OP | 2,
LVM_MUL = LVM_ARITH_OP | 3,
LVM_DIV = LVM_ARITH_OP | 4,
LVM_EQ = LVM_CMP_OP | 1,
LVM_NEQ = LVM_CMP_OP | 2,
LVM_GE = LVM_CMP_OP | 3,
LVM_GEQ = LVM_CMP_OP | 4,
LVM_LE = LVM_CMP_OP | 5,
LVM_LEQ = LVM_CMP_OP | 6,
LVM_AND = LVM_CONNECTIVE | 1,
LVM_OR = LVM_CONNECTIVE | 2,
LVM_NOT = LVM_CONNECTIVE | 3
};
typedef enum operator operator_t;
enum operand_type {
LVM_VARIABLE,
LVM_FLOAT,
LVM_LONG
};
typedef enum operand_type operand_type_t;
typedef unsigned char variable_id_t;
typedef union {
long l;
#if LVM_USE_FLOATS
float f;
#endif
variable_id_t id;
} operand_value_t;
struct operand {
operand_type_t type;
operand_value_t value;
};
typedef struct operand operand_t;
void lvm_reset(lvm_instance_t *p, unsigned char *code, lvm_ip_t size);
void lvm_clone(lvm_instance_t *dst, lvm_instance_t *src);
lvm_status_t lvm_derive(lvm_instance_t *p);
lvm_status_t lvm_get_derived_range(lvm_instance_t *p, char *name,
operand_value_t *min,
operand_value_t *max);
void lvm_print_derivations(lvm_instance_t *p);
lvm_status_t lvm_execute(lvm_instance_t *p);
lvm_status_t lvm_register_variable(char *name, operand_type_t type);
lvm_status_t lvm_set_variable_value(char *name, operand_value_t value);
void lvm_print_code(lvm_instance_t *p);
lvm_ip_t lvm_jump_to_operand(lvm_instance_t *p);
lvm_ip_t lvm_shift_for_operator(lvm_instance_t *p, lvm_ip_t end);
lvm_ip_t lvm_get_end(lvm_instance_t *p);
lvm_ip_t lvm_set_end(lvm_instance_t *p, lvm_ip_t end);
lvm_status_t lvm_set_op(lvm_instance_t *p, operator_t op);
lvm_status_t lvm_set_relation(lvm_instance_t *p, operator_t op);
lvm_status_t lvm_set_operand(lvm_instance_t *p, operand_t *op);
lvm_status_t lvm_set_long(lvm_instance_t *p, long l);
lvm_status_t lvm_set_variable(lvm_instance_t *p, char *name);
#endif /* LVM_H */