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yicesfull.c
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yicesfull.c
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#pragma GCC diagnostic ignored "-Wstrict-prototypes"
#include <Python.h> //This must be first include!
#include "structmember.h"
#include "yices_c.h"
#include <time.h>
#pragma GCC diagnostic warning "-Wstrict-prototypes"
//#define _DBG_MEM
#ifdef _DBG_MEM
#define _DBG_RET_OBJ(OBJECT) printf("%s returning pointer %p, refcount %d\n", __func__, OBJECT, (int) OBJECT->ob_refcnt);
#define Py_DECREF(OBJ) printf("skipped decref %p\n", OBJ)
#define free(OBJ) printf("skipped free %p\n", OBJ)
#else
#define _DBG_RET_OBJ(OBJECT)
#endif
#define _TIME_Y(ARG) if(time_y)_time_y_start = clock(); ARG; if(time_y)yices_time += clock() - _time_y_start;
//#define _TIME_Y(ARG) ARG;
/*
#define _TIME_Y_S(ARG, SUFFIX) clock_t _time_y_start_##SUFFIX = clock(); ARG; yices_time += clock() - _time_y_start_##SUFFIX;
#define _TIME_Y_S(ARG, SUFFIX) ARG;
*/
clock_t _time_y_start;
clock_t yices_time;
int time_y = 0;
typedef unsigned char ytype_t;
const ytype_t TYPE_BOOL = 0;
const ytype_t TYPE_REAL = 1;
const ytype_t TYPE_INT = 2;
unsigned int VAR_LIST_BLOCK_SIZE = 100; //TODO: try decreasing
static PyObject *YicesFullException;
//TODO: DECREF for GetAttr and GetAttrString
PyObject* mod_self; // This module
PyObject* mod_builtin; // The __builtin__ module
PyObject* mod_fractions; // The fractions module
/*******************************************************************************
*********************************** Helpers ************************************
*******************************************************************************/
PyObject* ybool2pybool(lbool arg)
{
switch(arg) {
case l_true:
Py_RETURN_TRUE;
case l_false:
Py_RETURN_FALSE;
case l_undef:
Py_RETURN_NONE;
default:
PyErr_SetString(YicesFullException, "Unexpected argument!");
return NULL;
}
}
/*******************************************************************************
***************************** RetractableAssertion *****************************
*******************************************************************************/
static PyTypeObject yicesfull_RetractableAssertionType;
typedef struct {
PyObject_HEAD
yices_context context;
assertion_id id;
unsigned char retracted;
} RetractableAssertion;
static RetractableAssertion* new_ra(yices_context context, assertion_id id)//, unsigned int* pushlevel)
{
RetractableAssertion* obj = PyObject_New(RetractableAssertion, &yicesfull_RetractableAssertionType);
obj->context = context;
obj->id = id;
obj->retracted = 0;
_DBG_RET_OBJ(obj)
return obj;
}
static PyObject* RA_str(RetractableAssertion* self)
{
PyObject* ret = PyString_FromFormat("RetractableAssertions(id:%d, ctx:%p)", self->id, self->context);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* RA_hash(RetractableAssertion* self)
{
PyObject* ret = Py_BuildValue("l", self->context + self->id);
_DBG_RET_OBJ(ret)
return ret;
}
static int RA_cmp(RetractableAssertion* a, RetractableAssertion* b)
{
if(a->context < b->context)
return -1;
if(a->context > b->context)
return 1;
//Contexts same
if(a->id < b->id)
return -1;
if(a->id > b->id)
return 1;
return 0;
}
static PyObject* RA_retract(RetractableAssertion* self)
{
if(!self->retracted)
{
yices_retract(self->context, self->id);
self->retracted = 1;
}
Py_RETURN_NONE;
}
static PyMethodDef RetractableAssertion_methods[] = {
{"retract", (PyCFunction) RA_retract, METH_NOARGS, "Retracts the assertion. May be called multiple times but not at the wrong pushlevel or after popping the assertion."},
{NULL} /* Sentinel */
};
static PyTypeObject yicesfull_RetractableAssertionType = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"yicesfull.RetractableAssertion", /*tp_name*/
sizeof(RetractableAssertion), /*tp_basicsize*/
0, /*tp_itemsize*/
0, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
(cmpfunc) RA_cmp, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
(reprfunc)RA_str, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
"Represents a retractable assertion", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
RetractableAssertion_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
};
/*******************************************************************************
*************************** YicesInternalExpression ****************************
*******************************************************************************/
static PyTypeObject yicesfull_YicesInternalExpressionType;
typedef struct {
PyObject_HEAD
yices_context context;
yices_expr expression;
int varid; // non-negative for variables, -1 for non-variables
} YicesInternalExpression;
static YicesInternalExpression* new_yix(yices_context context, yices_expr expression)
{
_TIME_Y(YicesInternalExpression* obj = PyObject_New(YicesInternalExpression, &yicesfull_YicesInternalExpressionType);)
obj->context = context;
obj->expression = expression;
obj->varid = -1; //TODO make accessible
_DBG_RET_OBJ(obj)
return obj;
}
static PyObject* YIX_str(YicesInternalExpression* self)
{
PyObject* ret = PyString_FromFormat("Yices internal expression %p for context %p with varid %i", self->expression, self->context, self->varid);
_DBG_RET_OBJ(ret)
return ret;
}
//Operator macros
#define YIX_N_ARY_OP_REF(OP_NAME) {"mk_"#OP_NAME, (PyCFunction) YIX_op_##OP_NAME, METH_VARARGS, "Returns expression for ("#OP_NAME" self arg[0] arg[1] ...)"}
#define YIX_N_ARY_OP_DEF(OP_NAME) static PyObject* YIX_op_##OP_NAME(YicesInternalExpression* self, PyObject* args) \
{ \
PyObject* arglist; \
PyObject* cls = PyObject_GetAttrString(mod_builtin, "list"); \
if(cls == NULL) \
return NULL; \
if (!PyArg_ParseTuple(args, "O!", cls, (PyObject**) &arglist)) \
{ \
Py_DECREF(cls); \
return NULL; \
} \
Py_DECREF(cls); \
\
/*Allocate expression list*/ \
unsigned n = (PyList_Size(arglist) + 1); \
yices_expr* exprs = malloc(n * sizeof(yices_expr)); \
exprs[0] = self->expression; \
\
/*Fill expression list*/ \
unsigned int i; \
PyObject* obj = NULL; \
for(i = 1; i < n; i++) \
{ \
obj = PyList_GetItem(arglist, i-1); \
if(obj == NULL) \
{ \
free(exprs); \
return NULL; \
} \
\
cls = PyObject_GetAttrString(mod_self, "YicesInternalExpression"); \
if(cls == NULL) \
{ \
free(exprs); \
return NULL; \
} \
if(!PyObject_IsInstance(obj, cls)) \
{ \
PyErr_SetString(YicesFullException, "Invalid type -- expected list of expressions"); \
free(exprs); \
Py_DECREF(cls); \
return NULL; \
} \
Py_DECREF(cls); \
if(((YicesInternalExpression*) obj)->context != self->context) { \
PyErr_SetString(YicesFullException, "Expressions from different contexts"); \
free(exprs); \
return NULL; \
} \
\
exprs[i] = ((YicesInternalExpression*) obj)->expression; \
} \
\
/*Make new expression*/ \
_TIME_Y(yices_expr yo = yices_mk_##OP_NAME(self->context, exprs, n)) \
obj = (PyObject*) new_yix(self->context, yo); \
\
/*Done*/ \
free(exprs); \
\
_DBG_RET_OBJ(obj) \
return obj; \
}
#define YIX_TERNARY_OP_REF(OP_NAME) {"mk_"#OP_NAME, (PyCFunction) YIX_op_##OP_NAME, METH_VARARGS, "Returns expression for ("#OP_NAME" self arg)"}
#define YIX_TERNARY_OP_DEF(OP_NAME) static PyObject* YIX_op_##OP_NAME(YicesInternalExpression* self, PyObject* args) \
{ \
YicesInternalExpression* arg1 = NULL; \
YicesInternalExpression* arg2 = NULL; \
PyObject* to = PyObject_GetAttrString(mod_self, "YicesInternalExpression"); \
if(to == NULL) \
return NULL; \
if (!PyArg_ParseTuple(args, "O!O!", to, (PyObject**) &arg1, to, (PyObject**) &arg2)) \
{ \
Py_DECREF(to); \
return NULL; \
} \
Py_DECREF(to); \
\
if(arg1->context != self->context || arg2->context != self->context) { \
PyErr_SetString(YicesFullException, "Expressions from different contexts"); \
return NULL; \
} \
\
/*Make new expression*/ \
_TIME_Y(yices_expr yo = yices_mk_##OP_NAME(self->context, self->expression, arg1->expression, arg2->expression)) \
PyObject* obj = (PyObject*) new_yix(self->context, yo); \
_DBG_RET_OBJ(obj) \
return obj; \
}
#define YIX_BINARY_OP_REF(OP_NAME) {"mk_"#OP_NAME, (PyCFunction) YIX_op_##OP_NAME, METH_VARARGS, "Returns expression for ("#OP_NAME" self arg)"}
#define YIX_BINARY_OP_DEF(OP_NAME) static PyObject* YIX_op_##OP_NAME(YicesInternalExpression* self, PyObject* args) \
{ \
YicesInternalExpression* arg = NULL; \
PyObject* cls = PyObject_GetAttrString(mod_self, "YicesInternalExpression"); \
if(cls == NULL) \
return NULL; \
if (!PyArg_ParseTuple(args, "O!", cls, (PyObject**) &arg)) \
{ \
Py_DECREF(cls); \
return NULL; \
} \
Py_DECREF(cls); \
\
if(arg->context != self->context) { \
PyErr_SetString(YicesFullException, "Expressions from different contexts"); \
return NULL; \
} \
\
/*Make new expression*/ \
_TIME_Y(yices_expr yo = yices_mk_##OP_NAME(self->context, self->expression, arg->expression)) \
PyObject* obj = (PyObject*) new_yix(self->context, yo); \
_DBG_RET_OBJ(obj) \
return obj; \
}
#define YIX_UNARY_OP_REF(OP_NAME) {"mk_"#OP_NAME, (PyCFunction) YIX_##OP_NAME, METH_NOARGS, "Returns expression for ("#OP_NAME" self)"}
#define YIX_UNARY_OP_DEF(OP_NAME) static PyObject* YIX_##OP_NAME(YicesInternalExpression* self) \
{ \
_TIME_Y(yices_expr yo = yices_mk_##OP_NAME(self->context, self->expression)) \
PyObject* obj = (PyObject*) new_yix(self->context, yo); \
_DBG_RET_OBJ(obj) \
return obj; \
}
YIX_UNARY_OP_DEF(not)
YIX_BINARY_OP_DEF(eq)
YIX_BINARY_OP_DEF(diseq)
YIX_BINARY_OP_DEF(lt)
YIX_BINARY_OP_DEF(le)
YIX_BINARY_OP_DEF(gt)
YIX_BINARY_OP_DEF(ge)
YIX_TERNARY_OP_DEF(ite)
YIX_N_ARY_OP_DEF(and)
YIX_N_ARY_OP_DEF(or)
YIX_N_ARY_OP_DEF(sum)
YIX_N_ARY_OP_DEF(sub)
YIX_N_ARY_OP_DEF(mul)
static PyMethodDef YicesInternalExpression_methods[] = {
YIX_UNARY_OP_REF(not),
YIX_BINARY_OP_REF(eq),
YIX_BINARY_OP_REF(lt),
YIX_BINARY_OP_REF(le),
YIX_BINARY_OP_REF(gt),
YIX_BINARY_OP_REF(ge),
YIX_BINARY_OP_REF(diseq),
YIX_TERNARY_OP_REF(ite),
YIX_N_ARY_OP_REF(and),
YIX_N_ARY_OP_REF(or),
YIX_N_ARY_OP_REF(sum),
YIX_N_ARY_OP_REF(sub),
YIX_N_ARY_OP_REF(mul),
{NULL} /* Sentinel */
};
static PyMemberDef YicesInternalExpression_members[] = {
{"varid", T_INT, offsetof(YicesInternalExpression, varid), 0, "Variable id but or -1 for non-variable expressions"},
{NULL} /* Sentinel */
};
static PyTypeObject yicesfull_YicesInternalExpressionType = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"yicesfull.YicesInternalExpression", /*tp_name*/
sizeof(YicesInternalExpression), /*tp_basicsize*/
0, /*tp_itemsize*/
0, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
(reprfunc)YIX_str, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
"Represents a internal yices expression", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
YicesInternalExpression_methods, /* tp_methods */
YicesInternalExpression_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
};
/*******************************************************************************
********************************* YicesContext *********************************
*******************************************************************************/
typedef struct {
PyObject_HEAD
yices_context context;
unsigned int pushes;
int varcount;
ytype_t* variable_types;
yices_expr* variable_expressions;
unsigned int varlist_size;
yices_type booltype;
yices_type realtype;
yices_type nattype;
yices_type inttype;
} YicesContext;
static int YicesContext_init(YicesContext *self, PyObject *args, PyObject *kwds)
{
_TIME_Y(self->context = yices_mk_context();)
self->pushes = 0;
self->varcount = 0;
self->realtype = yices_mk_type(self->context, "real");
self->booltype = yices_mk_type(self->context, "bool");
self->nattype = yices_mk_type(self->context, "nat");
self->inttype = yices_mk_type(self->context, "int");
self->variable_types = malloc(sizeof(ytype_t) * VAR_LIST_BLOCK_SIZE);
self->variable_expressions = malloc(sizeof(yices_expr) * VAR_LIST_BLOCK_SIZE);
self->varlist_size = VAR_LIST_BLOCK_SIZE;
return 0;
}
static int YicesContext_dealloc(YicesContext *self)
{
_TIME_Y(yices_del_context(self->context);)
free(self->variable_types);
free(self->variable_expressions);
return 0;
}
static PyObject* yc_helper_mk_var(YicesContext* self, PyObject* args, yices_type type, ytype_t type_id)
{
if(self->pushes != 0)
{
PyErr_SetString(YicesFullException, "Can only make variables at push level 0.");
return NULL;
}
int new_id = self->varcount;
char* name = NULL;
if(!PyArg_ParseTuple(args, "s", &name))
{
return NULL;
}
//Build expression
_TIME_Y(yices_expr yo = yices_mk_var_from_decl(self->context, yices_mk_var_decl(self->context, name, type)))
PyObject* ret = (PyObject*) new_yix(self->context, yo);
//ID
((YicesInternalExpression*) ret)->varid = new_id;
self->varcount++;
//Bookkeeping
if(new_id >= self->varlist_size)
{ //Increase size
ytype_t* old_types = self->variable_types;
yices_expr* old_exprs = self->variable_expressions;
self->variable_types = malloc(sizeof(ytype_t) * (self->varlist_size + VAR_LIST_BLOCK_SIZE));
self->variable_expressions = malloc(sizeof(yices_expr) * (self->varlist_size + VAR_LIST_BLOCK_SIZE));
memcpy(self->variable_types, old_types, sizeof(ytype_t) * self->varlist_size);
memcpy(self->variable_expressions, old_exprs, sizeof(yices_expr) * self->varlist_size);
free(old_types);
free(old_exprs);
self->varlist_size += VAR_LIST_BLOCK_SIZE;
}
self->variable_types[new_id] = type_id;
self->variable_expressions[new_id] = ((YicesInternalExpression*) ret)->expression;
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_mk_bool(YicesContext* self, PyObject* args)
{
PyObject* ret = yc_helper_mk_var(self, args, self->booltype, TYPE_BOOL);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_mk_real(YicesContext* self, PyObject* args)
{
PyObject* ret = yc_helper_mk_var(self, args, self->realtype, TYPE_REAL);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_mk_nat(YicesContext* self, PyObject* args)
{
PyObject* ret = yc_helper_mk_var(self, args, self->nattype, TYPE_INT);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_mk_int(YicesContext* self, PyObject* args)
{
PyObject* ret = yc_helper_mk_var(self, args, self->inttype, TYPE_INT);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_mk_true(YicesContext* self)
{
PyObject* ret = (PyObject*) new_yix(self->context, yices_mk_true(self->context)); //considered neglectible
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_mk_false(YicesContext* self)
{
PyObject* ret = (PyObject*) new_yix(self->context, yices_mk_false(self->context)); //considered neglectible
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_mk_num(YicesContext* self, PyObject* args)
{
long num;
if (!PyArg_ParseTuple(args, "l", &num))
return NULL;
PyObject* ret = (PyObject*) new_yix(self->context, yices_mk_num (self->context, num)); //considered neglectible
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_assertion(YicesContext* self, PyObject* args)
{
YicesInternalExpression* expr;
if (!PyArg_ParseTuple(args, "O!", &yicesfull_YicesInternalExpressionType, (PyObject**) &expr))
return NULL;
if (expr->context != self->context) {
PyErr_SetString(YicesFullException, "Expression from different context");
return NULL;
}
_TIME_Y(yices_assert(self->context, expr->expression);)
Py_RETURN_NONE;
}
static PyObject* YicesContext_retractable_assertion(YicesContext* self, PyObject* args)
{
YicesInternalExpression* expr;
if (!PyArg_ParseTuple(args, "O!", &yicesfull_YicesInternalExpressionType, (PyObject**) &expr))
return NULL;
if (expr->context != self->context) {
PyErr_SetString(YicesFullException, "Expression from different context");
return NULL;
}
_TIME_Y(assertion_id id = yices_assert_retractable(self->context, expr->expression);)
RetractableAssertion* ret = new_ra(self->context, id);
_DBG_RET_OBJ(ret)
return (PyObject*) ret;
}
static PyObject* YicesContext_check(YicesContext* self)
{
_TIME_Y(lbool lb = yices_check(self->context))
PyObject* ret = ybool2pybool(lb);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_unsat_core(YicesContext* self)
{
//get unsat core
_TIME_Y(unsigned sz = yices_get_unsat_core_size(self->context);)
assertion_id* ids = malloc(sz * sizeof(assertion_id));
_TIME_Y(yices_get_unsat_core(self->context, ids))
//build return list
PyObject* list = PyList_New(sz);
if(list == NULL)
{
free(ids);
return NULL;
}
PyObject* ni;
Py_ssize_t i;
for(i = 0; i < sz; i++)
{
ni = (PyObject*) new_ra(self->context, ids[i]);
if(ni == NULL)
{
Py_DECREF(list);
free(ids);
return NULL;
}
if(PyList_SET_ITEM(list, i, ni) < 0)
{
Py_DECREF(list);
Py_DECREF(ni);
free(ids);
return NULL;
}
}
free(ids);
_DBG_RET_OBJ(list)
return list;
}
static PyObject* YicesContext_get_context(YicesContext* self)
{
PyObject* ret = Py_BuildValue("i", self->context);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_str(YicesContext* self)
{
PyObject* ret = PyString_FromFormat("Yices context %p", self->context);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* YicesContext_is_inconsistent(YicesContext* self)
{
if(yices_inconsistent(self->context))
Py_RETURN_TRUE;
else
Py_RETURN_FALSE;
}
static PyObject* YicesContext_get_model(YicesContext* self)
{
//Obtain model
_TIME_Y(yices_model model = yices_get_model(self->context);)
if(model == 0)
{
Py_RETURN_NONE;
}
//Iterate over variables
PyObject* ret = PyList_New(self->varcount);
if(ret == NULL)
return NULL;
PyObject *val, *cls, *arg;
int i, rval;
yices_var_decl decl;
long num, den;
ytype_t type;
for(i = 0; i < self->varcount; i++)
{
decl = yices_get_var_decl(self->variable_expressions[i]);
//Get value and transform to python value
rval = 1;
val = NULL;
type = self->variable_types[i];
if(type == TYPE_BOOL)
{
val = ybool2pybool(yices_get_value(model, decl));
}
else if (type == TYPE_INT || type == TYPE_REAL)
{
rval = yices_get_arith_value(model, decl, &num, &den);
if(den == -1)
{
num = -num;
den = 1;
}
if(den == 1)
{ // Make int / long
val = Py_BuildValue("l", num);
if(val == NULL)
return NULL;
}
else
{ // Make fractions.Fraction
cls = PyObject_GetAttrString(mod_fractions, "Fraction");
if(cls == NULL)
{
Py_DECREF(ret);
return NULL;
}
arg = Py_BuildValue("ll", num, den);
if(arg == NULL)
{
Py_DECREF(cls);
Py_DECREF(ret);
return NULL;
}
val = PyObject_Call(cls, arg, NULL);
Py_DECREF(arg);
Py_DECREF(cls);
if(val == NULL)
{
Py_DECREF(ret);
return NULL;
}
}
}
else
{
PyErr_Format(YicesFullException, "Invalid variable type id: %i", self->variable_types[i]);
Py_DECREF(ret);
return NULL;
}
if(!rval || val == NULL) /* NOTE: !rval can mean (a) that the variable is
not used anywhere or (b) denominator or numerator
is too big to convert to long; To be safe we
throw an exception even in (a) */
{
PyErr_Format(YicesFullException, "Getting value failed for variable %d", i);
Py_DECREF(ret);
return NULL;
}
//Put into list
PyList_SET_ITEM(ret, i, val);
}
_DBG_RET_OBJ(ret)
return ret;
}
////////////////////////////////////////////////////////////////////////////////
static PyObject* YicesContext_push(YicesContext* self) /////////////////////////
{
//Actual push
_TIME_Y(yices_push(self->context);)
self->pushes++;
Py_RETURN_NONE;
}
////////////////////////////////////////////////////////////////////////////////
static PyObject* YicesContext_pop(YicesContext* self) //////////////////////////
{
if(self->pushes > 0)
{
//Actual pop
_TIME_Y(yices_pop(self->context);)
self->pushes--;
Py_RETURN_NONE;
}
else
{
PyErr_SetString(YicesFullException, "More pops than pushes");
return NULL;
}
}
static PyMethodDef YicesContext_methods[] = {
{"assertion", (PyCFunction) YicesContext_assertion, METH_VARARGS, "Adds an assertion. Takes an Expression"},
{"retractable_assertion", (PyCFunction) YicesContext_retractable_assertion, METH_VARARGS, "Adds a rectractable assertion. Takes an Expression. Returns a RetractableAssertion object"},
{"unsat_core", (PyCFunction) YicesContext_unsat_core, METH_NOARGS, "Returns a list containing the retractable assertions that are part of the unsatisfiable core."},
{"check", (PyCFunction) YicesContext_check, METH_NOARGS, "Checks the current assertions. Returns True, False or None for SAT, UNSAT and undecidable"},
{"mk_bool", (PyCFunction) YicesContext_mk_bool, METH_VARARGS, "Makes a new boolean variable with the specified name. Note that no two variables should have the same name."},
{"mk_real", (PyCFunction) YicesContext_mk_real, METH_VARARGS, "Makes a new real variable with the specified name. Note that no two variables should have the same name."},
{"mk_nat", (PyCFunction) YicesContext_mk_nat, METH_VARARGS, "Makes a new natural value variable with the specified name. Note that no two variables should have the same name. Don't use in arithmetic only mode."},
{"mk_int", (PyCFunction) YicesContext_mk_int, METH_VARARGS, "Makes a new integer value variable with the specified name. Note that no two variables should have the same name."},
{"mk_false", (PyCFunction) YicesContext_mk_false, METH_NOARGS, "Makes the constant \"false\""},
{"mk_true", (PyCFunction) YicesContext_mk_true, METH_NOARGS, "Makes the constant \"true\""},
{"mk_num", (PyCFunction) YicesContext_mk_num, METH_VARARGS, "Makes an integer constant"},
{"get_context", (PyCFunction) YicesContext_get_context, METH_NOARGS, "Returns an integer representation of the context"},
{"get_model", (PyCFunction) YicesContext_get_model, METH_NOARGS, "Returns name -> value dictionary (both strings) if there currently is a model or None otherwise"},
{"is_inconsistent", (PyCFunction) YicesContext_is_inconsistent, METH_NOARGS, "Returns True if the context is inconsistent"},
{"push", (PyCFunction) YicesContext_push, METH_NOARGS, "Create a backtracking point"},
{"pop", (PyCFunction) YicesContext_pop, METH_NOARGS, "Backtracks"},
{NULL} /* Sentinel */
};
static PyMemberDef YicesContext_members[] = {
{"varcount", T_INT, offsetof(YicesContext, varcount), 0, "Number of variables"},
{"pushes", T_UINT, offsetof(YicesContext, pushes), 0, "Number of pushes minus number of pops"},
{NULL} /* Sentinel */
};
static PyTypeObject yicesfull_YicesContextType = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"yicesfull.YicesContext", /*tp_name*/
sizeof(YicesContext), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)YicesContext_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */ // (hashfunc)YicesContext_hash, /*tp_hash */
0, /*tp_call*/
(reprfunc)YicesContext_str, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
"Yices C API object", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
YicesContext_methods, /* tp_methods */
YicesContext_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)YicesContext_init, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
};
/*******************************************************************************
****************************** Module level stuff ******************************
*******************************************************************************/
static PyObject* set_verbosity(PyObject *self, PyObject *args) {
int val;
if (!PyArg_ParseTuple(args, "i", &val))
return NULL;
yices_set_verbosity(val);
Py_RETURN_NONE;
}
static PyObject* version(PyObject *self)
{
PyObject* ret = Py_BuildValue("s", yices_version());
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* enable_type_checker(PyObject *self, PyObject *args)
{
int val;
if (!PyArg_ParseTuple(args, "i", &val))
return NULL;
yices_enable_type_checker(val);
Py_RETURN_NONE;
}
static PyObject* set_arith_only(PyObject *self, PyObject *args)
{
int val;
if (!PyArg_ParseTuple(args, "i", &val))
return NULL;
yices_set_arith_only(val);
Py_RETURN_NONE;
}
static PyObject* enable_log_file(PyObject *self, PyObject *args)
{
char* fn;
if (!PyArg_ParseTuple(args, "s", &fn))
return NULL;
yices_enable_log_file(fn);
Py_RETURN_NONE;
}
static PyObject* duration(PyObject *self)
{
PyObject* ret = Py_BuildValue("d", (double) yices_time / (double) CLOCKS_PER_SEC);
_DBG_RET_OBJ(ret)
return ret;
}
static PyObject* seed(PyObject *self, PyObject *args)
{
unsigned long val;
if (!PyArg_ParseTuple(args, "k", &val))
return NULL;
srand((unsigned int) val);
Py_RETURN_NONE;
}
static PyObject* enable_time_measuring(PyObject *self, PyObject* args)
{
if (!PyArg_ParseTuple(args, "i", &time_y))
return NULL;
Py_RETURN_NONE;
}
static PyMethodDef yicesfull_methods[] = {
{"get_version", (PyCFunction) version, METH_NOARGS, "Returns the version of yices that is used."},
{"set_verbosity", (PyCFunction) set_verbosity, METH_VARARGS, "Sets the verbosity -- note that this affects any YicesContext instance!"},
{"enable_type_checker", (PyCFunction) enable_type_checker, METH_VARARGS, "En/disables type checker -- note that this affects any YicesContext instance!"},
{"_enable_log_file", (PyCFunction) enable_log_file, METH_VARARGS, "For debugging"},
{"set_arith_only", (PyCFunction) set_arith_only, METH_VARARGS, "Dis/Enables arithmetic only mode. Enabling does not work with nat variables (but with int)"},
{"enable_time_measuring", (PyCFunction) enable_time_measuring, METH_VARARGS, "Enables time measuring for yices"},
{"duration", (PyCFunction) duration, METH_NOARGS, "Returns the total time used by all yices instances (in seconds) so far."},
{"seed", (PyCFunction) seed, METH_VARARGS, "Sets the seed."},
{NULL, NULL, 0, NULL} /* Sentinel */
};
PyMODINIT_FUNC inityicesfull(void)
{
PyObject* m;
yicesfull_YicesContextType.tp_new = PyType_GenericNew;
if (PyType_Ready(&yicesfull_YicesContextType) < 0)
return;
yicesfull_YicesInternalExpressionType.tp_new = PyType_GenericNew;
if (PyType_Ready(&yicesfull_YicesInternalExpressionType) < 0)
return;
yicesfull_RetractableAssertionType.tp_new = PyType_GenericNew;
if (PyType_Ready(&yicesfull_RetractableAssertionType) < 0)
return;
m = Py_InitModule3("yicesfull", yicesfull_methods, "Module for using the Yices C API");
if (m == NULL)
return;
Py_INCREF(&yicesfull_YicesContextType);
PyModule_AddObject(m, "YicesContext", (PyObject *)& yicesfull_YicesContextType);
Py_INCREF(&yicesfull_YicesInternalExpressionType);
PyModule_AddObject(m, "YicesInternalExpression", (PyObject *)& yicesfull_YicesInternalExpressionType);
Py_INCREF(&yicesfull_RetractableAssertionType);
PyModule_AddObject(m, "RetractableAssertion", (PyObject *)& yicesfull_RetractableAssertionType);
//YicesFullException
YicesFullException = PyErr_NewException("yicesfull.YicesFullException", NULL, NULL);
Py_INCREF(YicesFullException);
PyModule_AddObject(m, "YicesFullException", YicesFullException);
// mod_self = m;
mod_builtin = PyImport_ImportModule("__builtin__");
mod_fractions = PyImport_ImportModule("fractions");
mod_self = PyImport_ImportModule("yicesfull");
}