#include <malloc.h>
#include <math.h>
+#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include "debug.h"
-#include "fdprintf.h"
#include "parser.h"
+/* global variables */
+
+double answer = 0;
+
+#define DEFAULT_STORAGE_SIZE 10
+int storage_size = -1;
+
+double *storage = NULL;
+
+#define DEFAULT_FORMAT "=> %.6g\n"
+char *format = NULL;
+char *minform = NULL;
+
+workspace_t *programs = NULL;
+int nb_programs = 0;
+
/* compare codes */
int codecmp (char *ref, char *str)
return 0;
}
+/* calloc or die function */
+
+void *callocordie (size_t count, size_t size)
+{
+ if (count * size == 0) {
+ return NULL;
+ }
+ void *new = calloc (count, size);
+ if (new == NULL) {
+ VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n"));
+ exit (1);
+ }
+ return new;
+}
+
/* allocate new element */
element_t *newelement (func_t function, int nbops, int prio)
{
- element_t *new = (element_t *) calloc (1, sizeof (element_t));
- if (new == NULL) {
- VERBOSE (ERROR, fdprintf (stdfderr, "can't allocate memory\n"));
- return NULL;
+ element_t *new = (element_t *) callocordie (1, sizeof (element_t));
+ if (nbops) {
+ new->ops = (element_t **) callocordie (nbops, sizeof (element_t *));
}
new->func = function;
new->nbops = nbops;
return new;
}
-/* functions */
+/* desallocate element */
+
+void delelement (element_t *root)
+{
+ if ((root != NULL) && (root != ERROR_OP)) {
+ int i;
+ for (i = 0; i < root->nbops; i++) {
+ if ((root->ops[i] != NULL) && (root->ops[i] != ERROR_OP)) {
+ delelement (root->ops[i]);
+ }
+ }
+ if (root->nbops) {
+ free (root->ops);
+ }
+ free (root);
+ }
+}
-#define NB_OPERATORS 6
+/* duplicate element */
+element_t *dupelement (element_t *root)
+{
+ element_t *tmp = NULL;
+ int i;
+
+ if ((root == NULL) || (root == ERROR_OP)) {
+ return root;
+ }
+ tmp = newelement (root->func, root->nbops, root->prio);
+ tmp->value = root->value;
+ for (i = 0; i < root->nbops; i++) {
+ tmp->ops[i] = dupelement (root->ops[i]);
+ }
+ return tmp;
+}
+
+/* functions */
+
+#define NB_OPERATORS 14
keyword_t operators[NB_OPERATORS] = {
{ "+\t", Add, 2, 1, 1},
{ "-\t", Sub, 2, 1, 1},
{ "*", Mul, 2, 1, 2},
{ "/", Div, 2, 1, 2},
{ "%", Mod, 2, 1, 3},
- { "^", Pow, 2, 1, 4}
+ { "^", Pow, 2, 1, 4},
+ { "==", Equal, 2, 2, -1},
+ { "!=", Diff, 2, 2, -1},
+ { ">=", Ge, 2, 2, -1},
+ { "<=", Le, 2, 2, -1},
+ { ">", Gt, 2, 1, -1},
+ { "<", Lt, 2, 1, -1},
+ { "&", And, 2, 1, -2},
+ { "|", Or, 2, 1, -2}
};
-#define NB_FUNCTIONS 7
+#define NB_FUNCTIONS 31
keyword_t functions[NB_FUNCTIONS] = {
{ "sqrt", Sqr, 1, 4, 5},
{ "pow", Pow, 2, 3, 5},
{ "cos", Cos, 1, 3, 5},
{ "sin", Sin, 1, 3, 5},
- { "atan", Atn, 1, 4, 5},
+ { "tan", Tan, 1, 3, 5},
+ { "acos", Acos, 1, 4, 5},
+ { "asin", Asin, 1, 4, 5},
+ { "atan", Atan, 1, 4, 5},
+ { "log", Log, 1, 3, 5},
{ "exp", Exp, 1, 3, 5},
- { "log", Log, 1, 3, 5}
+ { "abs", Abs, 1, 3, 5},
+ { "floor", Floor, 1, 5, 5},
+ { "ceil", Ceil, 1, 4, 5},
+ { "sto", Store, 2, 3, 5},
+ { "rcl", Recall, 1, 3, 5},
+ { "inc", Inc, 1, 3, 5},
+ { "dec", Dec, 1, 3, 5},
+ { "disp", Disp, 0, 4, 9},
+ { "mem", Mem, 1, 3, 9},
+ { "clr", Clear, 0, 3, 9},
+ { "quit", Quit, 0, 4, 9},
+ { "help", Help, 0, 4, 9},
+ { "!", Not, 1, 1, 6},
+ { "cond", Cond, 3, 4, 5},
+ { "while", While, 2, 5, 5},
+ { "print", Print, 1, 5, 5},
+ { "prog", Prog, 3, 4, 9},
+ { "call", Call, 10, 4, 5},
+ { "ls", List, 0, 2, 9},
+ { "edit", Edit, 1, 4, 9},
+ { "del", Del, 1, 3, 9}
+};
+
+#define NB_CONSTANTS 3
+keyword_t constants[NB_CONSTANTS] = {
+ { "ans", Ans, 0, 3, 5},
+ { "e", E, 0, 1, 5},
+ { "pi", Pi, 0, 2, 5}
+};
+
+#define NB_SYMBOLS 4
+char *symbols[NB_SYMBOLS] = {
+ "(", ")", "{", "}"
};
+/* subparser function */
+
+element_t *subparser (element_t **proot, char **pstr, func_t func, int nbops, int prio)
+{
+ element_t *new = newelement (func, nbops, prio);
+ new->ops[0] = *proot;
+ new->ops[1] = parser (*pstr, pstr, new->prio);
+ if ((new->ops[1] == NULL) || ((new->ops[1] != ERROR_OP) && (new->ops[1]->prio == 9))) {
+ delelement (new->ops[1]);
+ new->ops[1] = ERROR_OP;
+ }
+ if (new->ops[1] == ERROR_OP) {
+ delelement (new);
+ *proot = NULL;
+ return ERROR_OP;
+ }
+ *proot = newelement (Val, 1, 5);
+ (*proot)->ops[0] = new;
+
+ return *proot;
+}
+
/* parser function */
element_t *parser (char *str, char **next, int prio)
{
element_t *root = NULL;
+ char *string = str;
int i;
- VERBOSE (DEBUG, PRINTOUT ("Starting parsing\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "Starting parsing\n"));
/* main loop */
while (*str != '\0') {
int found = 0;
element_t *new = NULL;
- VERBOSE (INFO, PRINTOUT ("Processing: %s\n", str));
+ VERBOSE (INFO, fprintf (stdout, "Processing: %s\n", str));
+
+ /* end without printing */
+
+ if (*str == ';') {
+ if (root) {
+ root->hidden = 1;
+ }
+ break;
+ }
/* skip spaces and tabs */
continue;
}
+ /* check for open brace */
+
+ if (*str == '{') {
+ VERBOSE (DEBUG, fprintf (stdout, "start processing brace\n"));
+ if (root != NULL) {
+ delelement (root);
+ return ERROR_OP;
+ }
+ element_t **prog = NULL;
+ new = newelement (Code, 0, 5);
+ root = new;
+ prog = &root;
+
+ do {
+ new = parser (str + 1, &str, 0);
+ if ((new == NULL) || ((new != ERROR_OP) && (new->prio == 9))) {
+ delelement (new);
+ new = ERROR_OP;
+ }
+ if (new == ERROR_OP) {
+ delelement (root);
+ return ERROR_OP;
+ }
+ element_t *newprog = newelement (Code, (*prog)->nbops + 1, 5);
+ for (i = 0; i < (*prog)->nbops; i++) {
+ newprog->ops[i] = (*prog)->ops[i];
+ (*prog)->ops[i] = NULL;
+ }
+ newprog->ops[(*prog)->nbops] = new;
+ delelement (*prog);
+ (*prog) = newprog;
+ } while (*str == ',');
+
+ if (*str != '}') {
+ delelement (root);
+ return ERROR_OP;
+ }
+ str++;
+ VERBOSE (DEBUG, fprintf (stdout, "stop processing brace\n"));
+ continue;
+ }
+
/* check for open bracket */
if (*str == '(') {
- VERBOSE (DEBUG, PRINTOUT ("start processing bracket\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "start processing bracket\n"));
if (root) {
do {
found = 0;
new = parser (str + 1, &str, 0);
- if (new == ERROR_OP) {
+ if ((new == NULL) || ((new != ERROR_OP) && (new->prio == 9))) {
+ delelement (new);
+ new = ERROR_OP;
+ }
+ if ((new == NULL) || (new == ERROR_OP)) {
+ delelement (root);
return ERROR_OP;
}
for (i = 0; i < root->nbops; i++) {
}
}
if (!found) {
+ delelement (new);
+ delelement (root);
return ERROR_OP;
}
} while (*str == ',');
} else {
- root = newelement (Val, 1, 4);
- if (root == NULL) {
- return ERROR_OP;
- }
+ root = newelement (Val, 1, 5);
new = parser (str + 1, &str, 0);
- if ((new == ERROR_OP) || (*str == ',')) {
+ if ((new == NULL) || ((new != ERROR_OP) && (new->prio == 9))) {
+ delelement (new);
+ new = ERROR_OP;
+ }
+ if ((new == NULL) || (new == ERROR_OP) || (*str == ',')) {
+ delelement (new);
+ delelement (root);
return ERROR_OP;
}
root->ops[0] = new;
}
+ if (*str != ')') {
+ delelement (root);
+ return ERROR_OP;
+ }
str++;
- VERBOSE (DEBUG, PRINTOUT ("stop processing bracket\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "stop processing bracket\n"));
continue;
}
- /* check for closing bracket or koma */
+ /* check for closing bracket, closing brace or koma */
- if ((*str == ')') || (*str == ',')) {
+ if ((*str == ')') || (*str == '}') || (*str == ',')) {
+ if (prio == -9) {
+ delelement (root);
+ return ERROR_OP;
+ }
if (next != NULL) {
*next = str;
}
for (i = 0; i < NB_OPERATORS; i++) {
keyword_t *operator = operators + i;
if (codecmp (operator->keyword, str) == 0) {
- VERBOSE (DEBUG, PRINTOUT ("start processing operator\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "start processing operator\n"));
if (root) {
if ((prio) && (prio > operator->prio)) {
- VERBOSE (DEBUG, PRINTOUT ("stop because operator priority\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "stop because operator priority\n"));
*next = str;
return root;
}
str += operator->offset;
- VERBOSE (INFO, PRINTOUT ("Oper: %d\n", operator->func));
- new = newelement (operator->func, operator->nbops, operator->prio);
- if (new == NULL) {
+ VERBOSE (INFO, fprintf (stdout, "Oper: %d\n", operator->func));
+ if (subparser (&root, &str, operator->func, operator->nbops, operator->prio) == ERROR_OP) {
+ delelement (root);
return ERROR_OP;
}
- new->ops[0] = root;
- new->ops[1] = parser (str, &str, new->prio);
- if (new->ops[1] == ERROR_OP) {
- return ERROR_OP;
- }
- root = newelement (Val, 1, 4);
- if (root == ERROR_OP) {
- return ERROR_OP;
- }
- root->ops[0] = new;
+ } else if (*str == '-') {
+ root = newelement (Sig, 1, 9);
} else {
return ERROR_OP;
}
found = 1;
- VERBOSE (DEBUG, PRINTOUT ("stop processing operator\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "stop processing operator\n"));
break;
}
}
for (i = 0; i < NB_FUNCTIONS; i++) {
keyword_t *function = functions + i;
if (codecmp (function->keyword, str) == 0) {
- VERBOSE (DEBUG, PRINTOUT ("start processing function\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "start processing function\n"));
if (root == NULL) {
- VERBOSE (INFO, PRINTOUT ("Func: %d\n", function->func));
- new = newelement (function->func, function->nbops, function->prio);
- if (new == NULL) {
- return ERROR_OP;
- }
- root = new;
- } else {
+ VERBOSE (INFO, fprintf (stdout, "Func: %d\n", function->func));
+ root = newelement (function->func, function->nbops, function->prio);
+ } else {
+ delelement (root);
return ERROR_OP;
}
str += function->offset;
found = 1;
- VERBOSE (DEBUG, PRINTOUT ("stop processing function\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "stop processing function\n"));
+ break;
+ }
+ }
+ if (found) {
+ continue;
+ }
+
+ /* look for constant */
+
+ for (i = 0; i < NB_CONSTANTS; i++) {
+ keyword_t *constant = constants + i;
+ if (codecmp (constant->keyword, str) == 0) {
+ VERBOSE (DEBUG, fprintf (stdout, "start processing constant\n"));
+ if (root == NULL) {
+ VERBOSE (INFO, fprintf (stdout, "Const: %d\n", constant->func));
+ root = newelement (constant->func, constant->nbops, constant->prio);
+ } else {
+ delelement (root);
+ return ERROR_OP;
+ }
+ str += constant->offset;
+ found = 1;
+ VERBOSE (DEBUG, fprintf (stdout, "stop processing constant\n"));
break;
}
}
if (((*str >= '0') && (*str <= '9')) ||
(*str == '.') || (*str == '+') || (*str == '-')) {
- VERBOSE (DEBUG, PRINTOUT ("start processing value\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "start processing value\n"));
char *pt;
- float value = strtof (str, &pt);
- VERBOSE (INFO, PRINTOUT ("Value: %f\n", value));
+ double value = strtod (str, &pt);
+ VERBOSE (INFO, fprintf (stdout, "Value: %f\n", value));
if (str != pt) {
- if (root == NULL) {
- new = newelement (Val, 1, 4);
- if (new == NULL) {
- return ERROR_OP;
- }
+ if ((root == NULL) || (root->prio == 6)) {
+ new = newelement (Val, 1, 5);
new->value = value;
- root = new;
- str = pt;
- } else if (root->func == Val) {
- if ((*str == '+') || (*str == '-')) {
- if ((prio) && (prio > 1)) {
- VERBOSE (DEBUG, PRINTOUT ("stop because operator priority\n"));
- *next = str;
- return root;
- }
- new = newelement (Add, 2, 1);
- if (new == NULL) {
- return ERROR_OP;
- }
- new->ops[0] = root;
- new->ops[1] = parser (str, &str, new->prio);
- if (new->ops[1] == ERROR_OP) {
- return ERROR_OP;
+ if (root == NULL) {
+ root = new;
+ } else {
+ for (i = 0; i < root->nbops; i++) {
+ if (root->ops[i] == NULL) {
+ root->ops[i] = new;
+ found = 1;
+ break;
+ }
}
- root = newelement (Val, 1, 4);
- if (root == ERROR_OP) {
+ if (!found) {
+ delelement (new);
+ delelement (root);
return ERROR_OP;
}
- root->ops[0] = new;
- } else {
+ }
+ str = pt;
+ } else if ((*str == '+') || (*str == '-')) {
+ if ((prio) && (prio > 1)) {
+ VERBOSE (DEBUG, fprintf (stdout, "stop because operator priority\n"));
+ *next = str;
+ return root;
+ }
+ if (subparser (&root, &str, Add, 2, 1) == ERROR_OP) {
+ delelement (root);
return ERROR_OP;
}
} else {
+ delelement (root);
return ERROR_OP;
}
found = 1;
}
- VERBOSE (DEBUG, PRINTOUT ("stop processing value\n"));
+ VERBOSE (DEBUG, fprintf (stdout, "stop processing value\n"));
}
/* error */
if (!found) {
+ delelement (root);
return ERROR_OP;
}
if (next != NULL) {
*next = str;
}
+
+ /* save string */
+ if (root != NULL) {
+ root->string = string;
+ }
+
return root;
}
}
for (i = 0; i < level; i++) {
- PRINTOUT (" ");
+ fprintf (stdout, " ");
}
switch (root->func) {
case Val: func = "Value"; break;
+ case Sig: func = "Sign"; break;
case Add: func = "Addition"; break;
case Sub: func = "Subtraction"; break;
case Mul: func = "Multiplication"; break;
case Sqr: func = "Square Root"; break;
case Cos: func = "Cosine"; break;
case Sin: func = "Sine"; break;
- case Atn: func = "Arc Tangent"; break;
+ case Tan: func = "Tangent"; break;
+ case Acos: func = "Arc Cosine"; break;
+ case Asin: func = "Arc Sine"; break;
+ case Atan: func = "Arc Tangent"; break;
case Log: func = "Logarithm"; break;
case Exp: func = "Exponantial"; break;
+ case Abs: func = "Absolute value"; break;
+ case Ceil: func = "Ceil value"; break;
+ case Floor: func = "Floor value"; break;
+ case Store: func = "Store"; break;
+ case Recall: func = "Recall"; break;
+ case Inc: func = "Increase"; break;
+ case Dec: func = "Decrease"; break;
+ case Disp: func = "Display"; break;
+ case Mem: func = "Memory"; break;
+ case Clear: func = "Clear"; break;
+ case Quit: func = "Quit"; break;
+ case Help: func = "Help"; break;
+ case Ans: func = "Ans"; break;
+ case Pi: func = "Pi"; break;
+ case E: func = "E"; break;
+ case Equal: func = "Equal"; break;
+ case Diff: func = "Different"; break;
+ case Ge: func = "Greater or equal"; break;
+ case Le: func = "Lesser or equal"; break;
+ case Gt: func = "Greater"; break;
+ case Lt: func = "Lesser"; break;
+ case And: func = "And"; break;
+ case Or: func = "Or"; break;
+ case Not: func = "Not"; break;
+ case Cond: func = "Condition"; break;
+ case While: func = "While"; break;
+ case Code: func = "Code"; break;
+ case Print: func = "Print"; break;
+ case Prog: func = "Program"; break;
+ case Call: func = "Call"; break;
+ case List: func = "List"; break;
+ case Edit: func = "Edit"; break;
+ case Del: func = "Del"; break;
}
- PRINTOUT ("Function: %s\n", func);
+ fprintf (stdout, "Function: %s\n", func);
if ((root->func == Val) && (root->ops[0] == NULL)) {
for (i = 0; i < level; i++) {
- PRINTOUT (" ");
+ fprintf (stdout, " ");
}
- PRINTOUT ("value: %f\n", root->value);
+ fprintf (stdout, "value: %f\n", root->value);
} else {
for (i = 0; i < root->nbops; i++) {
print_element (root->ops[i], level + 1);
}
}
+/* storage functions */
+
+void memory (int nb)
+{
+ int i, l;
+ double *tmp = NULL;
+ if (nb != storage_size) {
+ l = (nb < storage_size) ? nb : storage_size;
+ tmp = (double *) callocordie (nb, sizeof (double));
+ for (i = 0; i < l; i++) {
+ tmp[i] = storage[i];
+ }
+ if (storage != NULL) {
+ free (storage);
+ }
+ storage = tmp;
+ storage_size = nb;
+ }
+}
+
+double store (int index, double value)
+{
+ if (storage_size == -1) {
+ memory (DEFAULT_STORAGE_SIZE);
+ }
+ if ((index > 0) && (index <= storage_size)) {
+ storage[index - 1] = value;
+ } else {
+ VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [%d, %d]\n", index, (storage_size) ? 1 : 0, storage_size));
+ }
+ return value;
+}
+
+double recall (int index)
+{
+ if (storage_size == -1) {
+ memory (DEFAULT_STORAGE_SIZE);
+ }
+ if ((index > 0) && (index <= storage_size)) {
+ return storage[index - 1];
+ } else {
+ VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [%d, %d]\n", index, (storage_size) ? 1 : 0, storage_size));
+ }
+ return 0;
+}
+
+double increase (int index)
+{
+ if (storage_size == -1) {
+ memory (DEFAULT_STORAGE_SIZE);
+ }
+ if ((index > 0) && (index <= storage_size)) {
+ return storage[index - 1]++;
+ } else {
+ VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [%d, %d]\n", index, (storage_size) ? 1 : 0, storage_size));
+ }
+ return 0;
+}
+
+double decrease (int index)
+{
+ if (storage_size == -1) {
+ memory (DEFAULT_STORAGE_SIZE);
+ }
+ if ((index > 0) && (index <= storage_size)) {
+ return storage[index - 1]--;
+ } else {
+ VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [%d, %d]\n", index, (storage_size) ? 1 : 0, storage_size));
+ }
+ return 0;
+}
+
+void display (void)
+{
+ int i;
+ if (storage_size == -1) {
+ memory (DEFAULT_STORAGE_SIZE);
+ }
+ fprintf (stdout, "storage:");
+ for (i = 0; i < storage_size; i++) {
+ fprintf (stdout, " ");
+ fprintf (stdout, minform, storage[i]);
+ }
+ fprintf (stdout, "\n");
+}
+
+void clear ()
+{
+ int i;
+ for (i = 0; i < storage_size; i++) {
+ storage[i] = 0;
+ }
+}
+
+/* While do function */
+
+double while_do (element_t *cond, element_t *action)
+{
+ double ret = 0;
+ element_t *temp = NULL;
+
+ VERBOSE (DEBUG, fprintf (stdout, "starting while loop\n"));
+ while (1) {
+ VERBOSE (DEBUG, fprintf (stdout, "loop...\n"));
+
+ temp = dupelement (cond);
+ if (!evaluate_element (temp, 0)) {
+ break;
+ }
+ if (action) {
+ temp = dupelement (action);
+ ret = evaluate_element (temp, 0);
+ }
+ }
+
+ VERBOSE (DEBUG, fprintf (stdout, "ending while loop\n"));
+
+ return ret;
+}
+
+/* program function */
+
+double execute_code (element_t **prog, int nbcalls)
+{
+ double ret = 0;
+ int i;
+ for (i = 0; i < nbcalls; i++) {
+ ret = evaluate_element (prog[i], 0);
+ prog[i] = NULL;
+ }
+ return ret;
+}
+
+/* print function */
+
+void set_format (char *prompt, int precision)
+{
+ char buffer[128] = {0};
+ free_format ();
+ sprintf (buffer, "%s%%.%dg\n", prompt, precision);
+ format = strdup (buffer);
+ sprintf (buffer, "%%.%dg", precision);
+ minform = strdup (buffer);
+}
+
+void free_format ()
+{
+ if (format) {
+ free (format);
+ format = NULL;
+ }
+ if (minform) {
+ free (minform);
+ minform = NULL;
+ }
+}
+
+double print (double value)
+{
+ fprintf (stdout, format ? format : DEFAULT_FORMAT, value);
+ fflush (stdout);
+ return value;
+}
+
+/* quit function */
+
+void quit (void)
+{
+ fprintf (stdout, "bye\n");
+ exit (0);
+}
+
+/* program function */
+
+void prog (int id, int nbmems, element_t *root)
+{
+ int i, n = -1;
+
+ if (programs == NULL) {
+
+ /* initial memory allocation */
+ programs = (workspace_t *) callocordie (1, sizeof (workspace_t));
+ nb_programs = 1;
+ n = 0;
+
+ } else {
+
+ /* look for existing program */
+ for (i = 0; i < nb_programs; i++) {
+ if ((programs + i)->id == id) {
+ n = i;
+ break;
+ }
+ }
+ if (n == -1) {
+
+ /* new program */
+ n = nb_programs++;
+ workspace_t *tmp = (workspace_t *) callocordie (nb_programs, sizeof (workspace_t));
+ memcpy (tmp, programs, (nb_programs - 1) * sizeof (workspace_t));
+ free (programs);
+ programs = tmp;
+ } else {
+
+ /* clean old program */
+ if ((programs + n)->storage) {
+ free ((programs + n)->storage);
+ }
+ if ((programs + n)->root) {
+ delelement ((programs + n)->root);
+ }
+ if ((programs + n)->string) {
+ free ((programs + n)->string);
+ (programs + n)->string = NULL;
+ }
+ }
+ }
+
+ /* set program */
+ (programs + n)->id = id;
+ (programs + n)->answer = 0;
+ (programs + n)->storage = (double *) callocordie (nbmems, sizeof (double));
+ (programs + n)->storage_size = nbmems;
+ (programs + n)->root = dupelement (root);
+}
+
+double call (int id, int nbops, element_t **ops)
+{
+ workspace_t tmp = {0};
+ int i, n = -1;
+ double ret = 0;
+
+ if (programs) {
+
+ /* look for program */
+ for (i = 0; i < nb_programs; i++) {
+ if ((programs + i)->id == id) {
+ n = i;
+ break;
+ }
+ }
+ }
+ if (n == -1) {
+ VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id));
+ return 0;
+ }
+
+ /* store context */
+ tmp.answer = answer;
+ tmp.storage = storage;
+ tmp.storage_size = storage_size;
+
+ /* change context */
+ answer = 0;
+ storage = (programs + n)->storage;
+ storage_size = (programs + n)->storage_size;
+ if (nbops > storage_size) {
+ double *tmp = (double *) callocordie (nbops, sizeof (double));
+ memcpy (tmp, storage, storage_size * sizeof (double));
+ free (storage);
+ storage = tmp;
+ storage_size = nbops;
+ }
+ for (i = 0; i < nbops; i++) {
+ double val = evaluate_element (ops[i], 0);
+ store (i + 1, val);
+ }
+
+ /* evaluate program */
+ element_t *elements = dupelement ((programs + n)->root);
+ ret = evaluate_element (elements, 0);
+
+ /* restore context */
+ answer = tmp.answer;
+ storage = tmp.storage;
+ storage_size = tmp.storage_size;
+
+ return ret;
+}
+
+void list ()
+{
+ int i;
+ fprintf (stdout, "programs:");
+ for (i = 0; i < nb_programs; i++) {
+ fprintf (stdout, " %d", (programs + i)->id);
+ }
+ fprintf (stdout, "\n");
+}
+
+void edit (int id)
+{
+ int i, n = -1;
+
+ if (programs) {
+
+ /* look for program */
+ for (i = 0; i < nb_programs; i++) {
+ if ((programs + i)->id == id) {
+ n = i;
+ break;
+ }
+ }
+ }
+ if (n == -1) {
+ VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id));
+ return;
+ }
+
+ /* set string program */
+ fprintf (stdout, "edit: %s\n", (programs + n)->string);
+}
+
+void savestring (int id, char *string)
+{
+ int i, n = -1;
+
+ if (programs) {
+
+ /* look for program */
+ for (i = 0; i < nb_programs; i++) {
+ if ((programs + i)->id == id) {
+ n = i;
+ break;
+ }
+ }
+ }
+
+ /* unnecesary code */
+ //if (n == -1) {
+ // VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id));
+ // return;
+ //}
+ //if ((programs + n)->string) {
+ // free ((programs + n)->string);
+ //}
+
+ (programs + n)->string = strdup (string);
+}
+
+void del (int id)
+{
+ int i, j, n = -1;
+
+ if (programs) {
+
+ /* look for program */
+ for (i = 0; i < nb_programs; i++) {
+ if ((programs + i)->id == id) {
+ n = i;
+ break;
+ }
+ }
+ }
+ if (n == -1) {
+ VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id));
+ return;
+ }
+
+ /* clean program */
+ if ((programs + n)->storage) {
+ free ((programs + n)->storage);
+ }
+ if ((programs + n)->root) {
+ delelement ((programs + n)->root);
+ }
+ if ((programs + n)->string) {
+ free ((programs + n)->string);
+ }
+
+ /* remove entry */
+ workspace_t *tmp = (workspace_t *) callocordie (nb_programs - 1, sizeof (workspace_t));
+ for (i = 0, j = 0; i < nb_programs; i++) {
+ if (i != n) {
+ memcpy (tmp + j, programs + i, sizeof (workspace_t));
+ j++;
+ }
+ }
+ free (programs);
+ programs = tmp;
+ nb_programs--;
+}
+
+/* help message */
+
+void help (void)
+{
+ fprintf (stdout, "calc is a simple calculator\n\n");
+ fprintf (stdout, "supported operators:");
+ fprintf (stdout, " + - * / %% ^\n");
+ fprintf (stdout, "camparison operators:");
+ fprintf (stdout, " == != >= <= > <\n");
+ fprintf (stdout, "logical operators:");
+ fprintf (stdout, " & | !\n");
+ fprintf (stdout, "mathematic functions:");
+ fprintf (stdout, " pow sqrt log exp\n");
+ fprintf (stdout, "trig. func.:");
+ fprintf (stdout, " cos sin tan acos asin atan\n");
+ fprintf (stdout, "supported functions:");
+ fprintf (stdout, " abs ceil floor\n");
+ fprintf (stdout, "storage functions:");
+ fprintf (stdout, " mem sto rcl inc dec disp\n");
+ fprintf (stdout, "prog. functions:");
+ fprintf (stdout, " cond while print {} ;\n");
+ fprintf (stdout, "misc. functions:");
+ fprintf (stdout, " quit help\n");
+ fprintf (stdout, "supported constants:");
+ fprintf (stdout, " e pi\n");
+}
+
/* evaluate element tree */
-double evaluate_element (element_t *root)
+#define MASK_SUB 0x1
+#define MASK_DIV 0x2
+
+double evaluate_element (element_t *root, char mask)
{
double op0 = 0, op1 = 0;
+ char nextmask = mask;
+ int i, nb;
if ((root == NULL) || (root == ERROR_OP)) {
- VERBOSE (WARNING, PRINTOUT ("error while evaluating\n"));
+ VERBOSE (WARNING, fprintf (stdout, "error while evaluating\n"));
return 0;
}
+ /* mask to manage sub operator sub and div */
+ switch (root->func) {
+ case Add:
+ nextmask &= ~MASK_SUB;
+ nextmask &= ~MASK_DIV;
+ break;
+ case Sub:
+ nextmask |= MASK_SUB;
+ nextmask &= ~MASK_DIV;
+ break;
+ case Mul:
+ nextmask &= ~MASK_DIV;
+ break;
+ case Div:
+ nextmask |= MASK_DIV;
+ break;
+ default:
+ nextmask = mask;
+ }
+
switch (root->func) {
case Val:
- if (root->ops[0]) {
- return evaluate_element (root->ops[0]);
- } else {
- return root->value;
- }
+ case Sig:
+ op0 = (root->ops[0]) ? evaluate_element (root->ops[0], nextmask) : root->value;
break;
case Add:
case Sub:
case Div:
case Mod:
case Pow:
+ case Store:
+ case Equal:
+ case Diff:
+ case Ge:
+ case Le:
+ case Gt:
+ case Lt:
+ case And:
+ case Or:
+ case Prog:
if (root->ops[1]) {
- op1 = evaluate_element (root->ops[1]);
- } else {
- VERBOSE (WARNING, PRINTOUT ("error while evaluating (op[1])\n"));
+ op1 = evaluate_element (root->ops[1], nextmask);
+ } else if (root->func != Store) {
+ VERBOSE (WARNING, fprintf (stdout, "error while evaluating (op[1])\n"));
return 0;
}
/* fallthrough */
case Sqr:
case Cos:
case Sin:
- case Atn:
+ case Tan:
+ case Acos:
+ case Asin:
+ case Atan:
case Log:
case Exp:
+ case Abs:
+ case Ceil:
+ case Floor:
+ case Recall:
+ case Inc:
+ case Dec:
+ case Not:
+ case Mem:
+ case Cond:
+ case Call:
+ case Edit:
+ case Del:
if (root->ops[0]) {
- op0 = evaluate_element (root->ops[0]);
+ op0 = evaluate_element (root->ops[0], 0);
} else {
- VERBOSE (WARNING, PRINTOUT ("error while evaluating (op[0])\n"));
+ VERBOSE (WARNING, fprintf (stdout, "error while evaluating (op[0])\n"));
+ return 0;
+ }
+ break;
+ case Disp:
+ case Clear:
+ case Quit:
+ case Help:
+ case Ans:
+ case Pi:
+ case E:
+ case Code:
+ case List:
+ break;
+ case While:
+ if (root->ops[0] == NULL) {
+ VERBOSE (WARNING, fprintf (stdout, "error while evaluating (op[0])\n"));
return 0;
}
+ break;
+ case Print:
+ op0 = (root->ops[0]) ? evaluate_element (root->ops[0], 0) : answer;
+ break;
}
switch (root->func) {
- case Add: return op0 + op1;
- case Sub: return op0 - op1;
- case Mul: return op0 * op1;
- case Div: return op0 / op1;
+ case Val: return op0;
+ case Sig: return -op0;
+ case Add: return ((mask & MASK_SUB) == 0) ? op0 + op1 : op0 - op1;
+ case Sub: return ((mask & MASK_SUB) == 0) ? op0 - op1 : op0 + op1;
+ case Mul: return ((mask & MASK_DIV) == 0) ? op0 * op1 : op0 / op1;
+ case Div: return ((mask & MASK_DIV) == 0) ? op0 / op1 : op0 * op1;
case Mod: return fmod (op0, op1);
case Pow: return pow (op0, op1);
case Sqr: return sqrt (op0);
case Cos: return cos (op0);
case Sin: return sin (op0);
- case Atn: return atan (op0);
+ case Tan: return tan (op0);
+ case Acos: return acos (op0);
+ case Asin: return asin (op0);
+ case Atan: return atan (op0);
case Log: return log (op0);
case Exp: return exp (op0);
- default: break;
+ case Abs: return fabs (op0);
+ case Ceil: return ceil (op0);
+ case Floor: return floor (op0);
+ case Store: return store ((int)op0, (op1) ? op1 : answer);
+ case Recall: return recall ((int)op0);
+ case Inc: return increase ((int)op0);
+ case Dec: return decrease ((int)op0);
+ case Disp: display (); break;
+ case Mem: memory ((int)op0); break;
+ case Clear: clear (); break;
+ case Quit: quit (); break;
+ case Help: help (); break;
+ case Ans: return answer;
+ case Pi: return M_PI;
+ case E: return M_E;
+ case Equal: return op0 == op1;
+ case Diff: return op0 != op1;
+ case Ge: return op0 >= op1;
+ case Le: return op0 <= op1;
+ case Gt: return op0 > op1;
+ case Lt: return op0 < op1;
+ case And: return (op0 != 0) && (op1 != 0);
+ case Or: return (op0 != 0) || (op1 != 0);
+ case Not: return (op0 == 0);
+ case Cond:
+ if ((op0) && (root->ops[1])) {
+ return evaluate_element (root->ops[1], 0);
+ } else if ((!op0) && (root->ops[2])) {
+ return evaluate_element (root->ops[2], 0);
+ } else {
+ return 0;
+ }
+ case While: return while_do (root->ops[0], root->ops[1]);
+ case Code: return execute_code (root->ops, root->nbops);
+ case Print: return print (op0);
+ case Prog:
+ prog ((int)op0, (int)op1, root->ops[2]);
+ savestring ((int)op0, root->string);
+ break;
+ case Call:
+ for (i = 1, nb =0; i < root->nbops; i++) {
+ if (root->ops[i]) {
+ nb++;
+ }
+ }
+ return call ((int)op0, nb, root->ops + 1);
+ case List: list (); break;
+ case Edit: edit ((int)op0); break;
+ case Del: del ((int)op0); break;
}
return 0;
}
+char **generate_completion_list ()
+{
+ int i, j, l = 0;
+ char **list = (char **) callocordie (NB_OPERATORS + NB_FUNCTIONS + NB_CONSTANTS + NB_SYMBOLS + 1, sizeof (char *));
+
+ for (i = 0; i < NB_OPERATORS; i++) {
+ list[l] = strdup ((operators + i)->keyword);
+ for (j = 0; j < (int)strlen (list[l]); j++) {
+ if (list[i][j] == '\t') {
+ list[i][j] = '\0';
+ }
+ }
+ if (list[l] != NULL) {
+ l++;
+ }
+ }
+
+ for (i = 0; i < NB_FUNCTIONS; i++) {
+ list[l] = strdup ((functions + i)->keyword);
+ if (list[l] != NULL) {
+ l++;
+ }
+ }
+
+ for (i = 0; i < NB_CONSTANTS; i++) {
+ list[l] = strdup ((constants + i)->keyword);
+ if (list[l] != NULL) {
+ l++;
+ }
+ }
+
+ for (i = 0; i < NB_SYMBOLS; i++) {
+ list[l] = strdup (symbols[i]);
+ if (list[l] != NULL) {
+ l++;
+ }
+ }
+
+ return (list);
+}
+
+void free_completion_list (char **list)
+{
+ int i;
+
+ if (list) {
+ for (i = 0; i < NB_FUNCTIONS + NB_CONSTANTS; i++) {
+ if (list[i] != NULL) {
+ free (list[i]);
+ }
+ }
+ free (list);
+ }
+}
+
+
/* vim: set ts=4 sw=4 et: */
Soft'N'Design Software / projects / calc.git / blobdiff