/****************************************************************************
* apps/interpreters/bas/value.h
*
* Copyright (c) 1999-2014 Michael Haardt
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Adapted to NuttX and re-released under a 3-clause BSD license:
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Authors: Alan Carvalho de Assis <Alan Carvalho de Assis>
* Gregory Nutt <gnutt@nuttx.org>
*
* 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 NuttX 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
****************************************************************************/
#ifndef __APPS_EXAMPLES_BAS_VALUE_H
#define __APPS_EXAMPLES_BAS_VALUE_H
/****************************************************************************
* Included Files
****************************************************************************/
#include "str.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define VALUE_NEW_INTEGER(this,n) ((this)->type=V_INTEGER,(this)->u.integer=(n))
#define VALUE_NEW_REAL(this,n) ((this)->type=V_REAL,(this)->u.real=(n))
#define VALUE_RETYPE(v,t) ((v)->type==(t) ? (v) : Value_retype(v,t))
#define VALUE_DESTROY(this) assert((this)!=(struct Value*)0); \
switch ((this)->type) \
{ \
case V_ERROR: free((this)->u.error.msg); break; \
case V_INTEGER: break; \
case V_NIL: break; \
case V_REAL: break; \
case V_STRING: String_destroy(&(this)->u.string); break; \
case V_VOID: break; \
default: assert(0); \
} \
(this)->type=0;
/****************************************************************************
* Public Types
****************************************************************************/
enum ValueType
{
V_ERROR=1,
V_INTEGER,
V_NIL,
V_REAL,
V_STRING,
V_VOID
};
struct Value
{
enum ValueType type;
union
{
/* V_ERROR */ struct { char *msg; long int code; } error;
/* V_INTEGER */ long int integer;
/* V_NIL */
/* V_REAL */ double real;
/* V_STRING */ struct String string;
/* V_VOID */
} u;
};
/****************************************************************************
* Public Data
****************************************************************************/
extern const enum ValueType Value_commonType[V_VOID+1][V_VOID+1];
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
long int lrint(double d);
double Value_trunc(double d);
double Value_round(double d);
long int Value_toi(double d, int *overflow);
long int Value_vali(const char *s, char **end, int *overflow);
double Value_vald(const char *s, char **end, int *overflow);
struct Value *Value_new_NIL(struct Value *this);
struct Value *Value_new_ERROR(struct Value *this, int code,
const char *error, ...);
struct Value *Value_new_INTEGER(struct Value *this, int n);
struct Value *Value_new_REAL(struct Value *this, double n);
struct Value *Value_new_STRING(struct Value *this);
struct Value *Value_new_VOID(struct Value *this);
struct Value *Value_new_null(struct Value *this, enum ValueType type);
int Value_isNull(const struct Value *this);
void Value_destroy(struct Value *this);
void Value_errorPrefix(struct Value *this, const char *prefix);
void Value_errorSuffix(struct Value *this, const char *suffix);
struct Value *Value_new_typeError(struct Value *this, enum ValueType t1,
enum ValueType t2);
struct Value *Value_retype(struct Value *this, enum ValueType type);
struct Value *Value_clone(struct Value *this, const struct Value *original);
struct Value *Value_uplus(struct Value *this, int calc);
struct Value *Value_uneg(struct Value *this, int calc);
struct Value *Value_unot(struct Value *this, int calc);
struct Value *Value_add(struct Value *this, struct Value *x, int calc);
struct Value *Value_sub(struct Value *this, struct Value *x, int calc);
struct Value *Value_mult(struct Value *this, struct Value *x, int calc);
struct Value *Value_div(struct Value *this, struct Value *x, int calc);
struct Value *Value_idiv(struct Value *this, struct Value *x, int calc);
struct Value *Value_mod(struct Value *this, struct Value *x, int calc);
struct Value *Value_pow(struct Value *this, struct Value *x, int calc);
struct Value *Value_and(struct Value *this, struct Value *x, int calc);
struct Value *Value_or(struct Value *this, struct Value *x, int calc);
struct Value *Value_xor(struct Value *this, struct Value *x, int calc);
struct Value *Value_eqv(struct Value *this, struct Value *x, int calc);
struct Value *Value_imp(struct Value *this, struct Value *x, int calc);
struct Value *Value_lt(struct Value *this, struct Value *x, int calc);
struct Value *Value_le(struct Value *this, struct Value *x, int calc);
struct Value *Value_eq(struct Value *this, struct Value *s, int calc);
struct Value *Value_ge(struct Value *this, struct Value *x, int calc);
struct Value *Value_gt(struct Value *this, struct Value *x, int calc);
struct Value *Value_ne(struct Value *this, struct Value *x, int calc);
int Value_exitFor(struct Value *this, struct Value *limit,
struct Value *step);
struct String *Value_toString(struct Value *this, struct String *s,
char pad, int headingsign, size_t width,
int commas, int dollar, int dollarleft,
int precision, int exponent,
int trailingsign);
struct Value *Value_toStringUsing(struct Value *this, struct String *s,
struct String *using, size_t *usingpos);
struct String *Value_toWrite(struct Value *this, struct String *s);
struct Value *Value_nullValue(enum ValueType type);
#endif /* __APPS_EXAMPLES_BAS_VALUE_H */
