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/*
*
* Gestion de la pile des operandes
*
*/
#include "pile.h"
#include "exceptions.h"
#include "numbers.h"
#include "main.h"
#include "interface.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
#define _(x) x
#endif
/* FIXME manque procedure vidage de pile en fin de prog */
pile_elem pile[PILE_MAX];
unsigned int pile_ptr = 0;
void push_pile(char *st)
{
int valid1, valid2, valid3, valid4;
int i_number;
double d_number;
polynome poly;
char *buf;
i_number = char_to_number(st, &valid1);
d_number = char_to_double(st, &valid2);
valid3 = is_mute(st);
poly = (polynome) NomVarToVar(st, variables, (char *) valid4);
if (valid1) { /* il s agit d un entier */
push_pile_poly(ply_constr(rat_constr(i_number, 1), 0));
} else if (valid2) { /* il s agit d un flottant */
push_pile_poly(ply_constr(rat_constr_from_double(d_number), 0));
} else if (valid3) { /* il s agit de x */
push_pile_poly(ply_constr(rat_constr(1, 1), 0));
} else if (valid4) { /* il s agit d une variable */
push_pile_poly(ply_copy(poly));
} else { /* il s agit d un nom */
push_pile_string(Estrdup(st));
}
}
void push_pile_poly(polynome poly)
{
if (pile_ptr != PILE_MAX) {
pile[pile_ptr].type = T_POLY;
pile[pile_ptr].poly = poly;
pile_ptr++;
} else {
exception(1, _("push_pile_poly: Stack Overflow"));
}
}
void push_pile_int(int val)
{
if (pile_ptr != PILE_MAX) {
pile[pile_ptr].type = T_INT;
pile[pile_ptr].val = val;
pile_ptr++;
} else {
exception(1, _("push_pile_int: Stack Overflow"));
}
}
void push_pile_string(char *st)
{
if (pile_ptr != PILE_MAX) {
pile[pile_ptr].type = T_STRING;
pile[pile_ptr].label = Estrdup(st);
pile_ptr++;
} else {
exception(1, _("push_pile_string: Stack Overflow"));
}
}
pile_elem pop_pile(unsigned int count)
{
char buf[50];
if ((int) (pile_ptr - count) >= 0) {
pile_ptr -= count;
} else {
sprintf(buf, _("pop_pile: Can't pop %u elements"), count);
exception(1, buf);
}
return pile[pile_ptr];
}
char *affichage_level_1(void)
{
char *result;
if (!pile_ptr) {
switch (pile[pile_ptr - 1].type) {
case T_POLY:
result = ply_affichage(pile[pile_ptr - 1].poly);
break;
case T_STRING:
result = pile[pile_ptr - 1].label;
break;
case T_INT:
result = (char *) Emalloc(11 * sizeof(char));
sprintf(result, "%10d", pile[pile_ptr - 1].val);
break;
}
}
}
int is_mute(char *st)
{ /* FIXME: test lowercase / uppercase */
char buf[2];
sprintf(buf, "%c", mute);
return strcmp(st, buf);
}
void act_pile(int func)
{
pile_elem operande1, operande2;
char buf[50];
sprintf(buf, _("Calling act_pile(%i)\n"), func);
pushcontext(buf);
switch (func) {
case OP_PLUS:
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
push_pile_poly(ply_addition(operande1.poly, operande2.poly));
if (operande1.poly)
ply_destruct(operande1.poly);
if (operande2.poly)
ply_destruct(operande2.poly);
} else {
exception(1, _("act_pile: OP_PLUS invalid arguments"));
}
break;
case OP_MOINS:
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
push_pile_poly(ply_soustraction(operande1.poly, operande2.poly));
if (operande1.poly)
ply_destruct(operande1.poly);
if (operande2.poly)
ply_destruct(operande2.poly);
} else {
exception(1, _("act_pile: OP_MOINS invalid arguments"));
}
break;
case OP_MUL:
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
push_pile_poly(ply_multiplication(operande1.poly, operande2.poly));
if (operande1.poly)
ply_destruct(operande1.poly);
if (operande2.poly)
ply_destruct(operande2.poly);
} else {
exception(1, _("act_pile: OP_MUL invalid arguments"));
}
break;
case OP_DIV:
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
push_pile_poly(ply_division(operande1.poly, operande2.poly));
if (operande1.poly)
ply_destruct(operande1.poly);
if (operande2.poly)
ply_destruct(operande2.poly);
} else {
exception(1, _("act_pile: OP_DIV invalid arguments"));
}
break;
case OP_MOD:
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
push_pile_poly(ply_modulo(operande1.poly, operande2.poly));
if (operande1.poly)
ply_destruct(operande1.poly);
if (operande2.poly)
ply_destruct(operande2.poly);
} else {
exception(1, _("act_pile: OP_MOD invalid arguments"));
}
break;
case OP_EXP:
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
if (operande2.poly) {
if ((operande2.poly->coef.denom == 1)
&& (operande2.poly->coef.num >= 0)) {
push_pile_poly(ply_exposant
(operande1.poly, operande2.poly->coef.num));
if (operande1.poly)
ply_destruct(operande1.poly);
ply_destruct(operande2.poly);
} else {
exception(1, _("act_pile: OP_EXP invalid arguments"));
}
} else {
exception(1, _("act_pile: OP_EXP invalid arguments"));
}
} else {
exception(1, _("act_pile: OP_EXP invalid arguments"));
}
break;
case OP_ASSIGN: /* FIXME: sens de l evaluation ? poly label sto ou label poly sto */
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_STRING)) {
if (operande2.label) {
InsererVarDansTab(&variables,
CreerElement(operande2.label,
(void *) operande1.poly));
if (operande1.poly)
ply_destruct(operande1.poly);
free(operande2.label);
} else {
exception(1, _("act_pile: OP_ASSIGN empty string"));
}
} else {
exception(1, _("act_pile: OP_ASSIGN invalid arguments"));
}
break;
case OP_PLUS_UNARY:
break;
case OP_MOINS_UNARY:
operande1 = pop_pile(1);
if (operande1.type == T_POLY) {
push_pile_poly(ply_soustraction
(ply_constr(rat_constr_zero(), 0), operande1.poly));
if (operande1.poly)
ply_destruct(operande1.poly);
} else {
exception(1, _("act_pile: OP_MOINS_UNARY invalid argument"));
}
break;
case OP_FUNC_CALL:
operande1 = pop_pile(1);
if ((operande1.type == T_INT) && (operande1.val == 1)) {
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
if (operande2.poly) {
if (operande2.poly->degre == 0) {
push_pile_poly(ply_constr
(rat_constr_from_double
(ply_valuation
(operande1.poly,
rat_to_double(operande2.poly->
coef))), 1));
if (operande1.poly)
ply_destruct(operande1.poly);
ply_destruct(operande2.poly);
} else {
exception(1,
_
("act_pile: OP_FUNC_CALL invalid arguments"));
}
} else {
exception(1, _("act_pile: OP_FUNC_CALL invalid arguments"));
}
} else {
exception(1, _("act_pile: OP_FUNC_CALL invalid arguments"));
}
} else {
exception(1, _("act_pile: OP_FUNC_CALL incorrect argument number"));
}
break;
default:
exception(1, _("act_pile: Unknown operator"));
}
popcontext();
}
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