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/* -*- c -*- */
/*
* value.h
*
* chpp
*
* Copyright (C) 1997-1998 Mark Probst
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __VALUE_H__
#define __VALUE_H__
#include "chash.h"
#include "avl.h"
#include "dynstring.h"
#include "internals.h"
#include "builtins/builtins.h"
struct _bytecode;
struct _environment;
#define VALUE_UNDEFINED 0
#define VALUE_INTERNAL 1
#define VALUE_BUILT_IN 2
#define VALUE_SCALAR 3
#define VALUE_LIST 4
#define VALUE_HASH 5
#define VALUE_LAMBDA 6
#define VALUE_WHATSIT 7
typedef struct _value
{
int type;
union
{
struct
{
internalSet setFunc;
internalGet getFunc;
} internal;
struct
{
builtIn function;
int evalParams;
builtInGlobalEffector globalEffector;
builtInEnvironmentor environmentor;
} builtIn;
struct
{
dynstring scalar;
} scalar;
struct
{
avlTree *list;
} list;
struct
{
hash hash;
} hash;
struct
{
int numParams;
int minVarArgs;
int maxVarArgs;
dynstring *paramNames;
char metaChar;
struct _bytecode *code;
struct _environment *env;
} lambda;
struct
{
void *data;
} whatsit;
} v;
} value;
value* valueNewUndefined (void);
value* valueNewInternal (internalSet setFunc, internalGet getFunc);
value* valueNewBuiltIn (builtIn function, int evalParams,
builtInGlobalEffector globalEffector,
builtInEnvironmentor environmentor);
value* valueNewScalar (dynstring *scalar);
value* valueNewScalarFromCString (const char *scalar);
value* valueNewScalarFromBytes (const char *scalar, int length);
value* valueNewList (void);
value* valueNewHash (void);
value* valueNewLambda (int numParams, int minVarArgs, int maxVarArgs,
dynstring *paramNames, char metaChar,
struct _bytecode *code, struct _environment *env);
value* valueNewWhatsit (void *data);
value* valueNewScalarFromValue (value *theValue);
value* valueCopy (value *theValue);
value* valueCopyDeep (value *theValue);
int valueCompare (value *value1, value *value2);
int valueAreSame (value *value1, value *value2);
int valueAreEqual (value *value1, value *value2);
value* valueAssign (value *dest, value *src, int share);
int valueBoolValue (value *theValue);
int valueHashCount (value *theValue);
void valueHashDefine (value *aValue, dynstring *key, value *defValue);
value* valueHashLookup (value *value, dynstring *key);
value* valueHashLookupCString (value *value, const char *key);
int valueListLength (value *value);
value* valueListGetElement (value *value, int index);
void valueListSetElement (value *theValue, int index, value *defValue);
void valueListInsertElement (value *theValue, int index, value *defValue);
void valueListDeleteElement (value *theValue, int index);
void valueListAppendList (value *list, value *appended, int destroy);
void valueListClear (value *theValue);
void* valueWhatsitData (value *theValue);
value* valueTransformToScalar (value *theValue);
const char* cStringForValueType (int type);
#endif
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