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/*
*
* Gestion de la pile des operandes
*
*/
#include <stdlib.h>
#include "pile.h"
#include "exceptions.h"
#include "numbers.h"
#include "main.h"
#include "parser.h"
#include "scalaires.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
#define _(x) x
#endif
pile_elem pile[PILE_MAX];
unsigned int pile_ptr = 0;
void push_pile(char *st)
{
int valid1, valid2, valid3;
char valid4 = 0;
int i_number;
rationnel r_number;
polynome poly;
char buf[128];
sprintf(buf, _("Calling push_pile(%s)"), st);
pushcontext(buf);
i_number = char_to_number(st, &valid1);
r_number = char_to_rat(st, &valid2);
valid3 = is_mute(st);
poly = (polynome) NomVarToVar(st, variables, &valid4);
if (valid1) { /* il s agit d un entier */
pushcontext(_("it's an integer"));
push_pile_poly(ply_constr(rat_constr(i_number, 1), 0));
popcontext();
} else if (valid2) { /* il s agit d un flottant */
pushcontext(_("it's a float"));
push_pile_poly(ply_constr(r_number, 0));
popcontext();
} else if (valid3) { /* il s agit de x */
pushcontext(_("it's X"));
push_pile_poly(ply_constr(rat_constr(1, 1), 1));
popcontext();
} else if (valid4) { /* il s agit d une variable */
pushcontext(_("it's a variable"));
push_pile_poly(ply_copy(poly));
popcontext();
} else { /* il s agit d un nom */
pushcontext(_("it's a name"));
push_pile_string(Estrdup(st));
popcontext();
}
popcontext();
#ifdef DEBUG
fprintf(stderr, "exiting push_pile\n");
#endif
}
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(2, _("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(2, _("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(2, _("push_pile_string: Stack Overflow"));
}
}
pile_elem pop_pile(unsigned int count)
{
char buf[50];
if (((int) (pile_ptr) - (int) count) >= 0) {
pile_ptr -= count;
} else {
sprintf(buf, _("pop_pile: Can't pop %u elements"), count);
exception(2, buf);
}
return pile[pile_ptr];
}
void flush_pile(void)
{
int i;
if (pile_ptr) {
for (i = 0; i <= pile_ptr - 1; i++) {
switch (pile[i].type) {
case T_INT:
break;
case T_STRING:
free(pile[i].label);
break;
case T_POLY:
ply_destruct(pile[i].poly);
break;
}
}
}
pile_ptr=0;
}
char *affichage_level_1(void)
{
char *result = NULL;
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;
}
}
return result;
}
int is_mute(char *st)
{
return !(strcmp(st, mute));
}
void act_pile(int func)
{
pile_elem operande1, operande2;
char buf[50];
char valid;
sprintf(buf, _("Calling act_pile(%i)"), func);
pushcontext(buf);
#ifdef DEBUG
affichage_pile();
#endif
switch (func) {
case OP_PLUS:
#ifdef DEBUG
printf("----- OP_PLUS\n");
#endif
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:
#ifdef DEBUG
printf("----- OP_MOINS\n");
#endif
operande2 = pop_pile(1);
operande1 = 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:
#ifdef DEBUG
printf("----- OP_MUL\n");
#endif
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:
#ifdef DEBUG
printf("----- OP_DIV\n");
#endif
operande2 = pop_pile(1);
operande1 = 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:
#ifdef DEBUG
printf("----- OP_MOD\n");
#endif
operande2 = pop_pile(1);
operande1 = 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:
#ifdef DEBUG
printf("----- OP_EXP\n");
#endif
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_POLY)) {
if (operande1.poly) {
if ((operande1.poly->coef.denom == 1)
&& (operande1.poly->coef.num >= 0)) {
push_pile_poly(ply_exposant(operande2.poly, operande1.poly->coef.num));
if (operande2.poly)
ply_destruct(operande2.poly);
ply_destruct(operande1.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:
#ifdef DEBUG
printf("----- OP_ASSIGN\n");
#endif
operande1 = pop_pile(1);
operande2 = pop_pile(1);
if ((operande1.type == T_POLY) && (operande2.type == T_STRING)) {
if (operande2.label) {
NomVarToVar(operande2.label, variables, &valid);
if (valid)
SupprimerDansTab(&variables,operande2.label);
InsererVarDansTab(&variables, CreerElement(operande2.label, (void *) 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:
#ifdef DEBUG
printf("----- OP_PLUS_UNARY\n");
#endif
break;
case OP_MOINS_UNARY:
#ifdef DEBUG
printf("----- OP_MOINS_UNARY\n");
#endif
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:
#ifdef DEBUG
printf("----- OP_FUNC_CALL\n");
#endif
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 (operande1.poly->degre == 0) {
push_pile_poly(ply_constr
(rat_constr_from_double
(ply_valuation
(operande2.poly, rat_to_double(operande1.poly->coef))),
0));
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();
}
void affichage_pile(void)
{
int i;
printf(_("\t-- Printing Stack\n"));
if (pile_ptr) {
for (i = 0; i <= pile_ptr - 1; i++) {
switch (pile[i].type) {
case T_INT:
printf("\t\t%d:I: %d\n", i, pile[i].val);
break;
case T_STRING:
printf("\t\t%d:S: %s\n", i, pile[i].label);
break;
case T_POLY:
printf("\t\t%d:P: %s\n", i, ply_affichage(pile[i].poly));
break;
}
}
}
printf(_("\t-- End Printing Stack\n"));
}
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