#include <math.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include "debug.h"
double answer = 0;
-#define STORAGE_SIZE 10
-double storage[STORAGE_SIZE] = {0};
+#define DEFAULT_STORAGE_SIZE 10
+int storage_size = -1;
+
+double *storage = NULL;
+
+#define DEFAULT_FORMAT "=> %.6g\n"
+char *format = NULL;
+char *minform = NULL;
/* compare codes */
element_t *new = (element_t *) calloc (1, sizeof (element_t));
if (new == NULL) {
VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n"));
- return NULL;
+ exit (1);
+ }
+ if (nbops) {
+ new->ops = (element_t **) calloc (nbops, sizeof (element_t *));
+ if (new->ops == NULL) {
+ VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n"));
+ exit (1);
+ }
}
new->func = function;
new->nbops = nbops;
void delelement (element_t *root)
{
- int i;
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);
}
}
-/* functions */
+/* duplicate element */
-#define NB_OPERATORS 6
+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 12
+#define NB_FUNCTIONS 26
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},
+ { "tan", Tan, 1, 3, 5},
+ { "acos", Acos, 1, 4, 5},
+ { "asin", Asin, 1, 4, 5},
{ "atan", Atan, 1, 4, 5},
- { "exp", Exp, 1, 3, 5},
{ "log", Log, 1, 3, 5},
- { "sto", Store, 1, 3, 5},
+ { "exp", Exp, 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},
- { "disp", Disp, 0, 4, 5},
- { "quit", Quit, 0, 4, 5},
- { "help", Help, 0, 4, 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}
};
#define NB_CONSTANTS 3
{ "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);
- if (new == NULL) {
- return ERROR_OP;
- }
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);
- if (*proot == NULL) {
- delelement (new);
- return ERROR_OP;
- }
(*proot)->ops[0] = new;
return *proot;
element_t *new = NULL;
VERBOSE (INFO, fprintf (stdout, "Processing: %s\n", str));
+ /* end without printing */
+
+ if (*str == ';') {
+ if (root) {
+ root->hidden = 1;
+ }
+ break;
+ }
+
/* skip spaces and tabs */
if ((*str == ' ') || (*str == '\t')) {
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 (Prog, 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 (Prog, (*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 == '(') {
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;
}
} while (*str == ',');
} else {
root = newelement (Val, 1, 5);
- if (root == NULL) {
- return ERROR_OP;
- }
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, 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;
}
return ERROR_OP;
}
} else if (*str == '-') {
- new = newelement (Sig, 1, 9);
- if (new == NULL) {
- return ERROR_OP;
- }
- root = new;
+ root = newelement (Sig, 1, 9);
} else {
return ERROR_OP;
}
VERBOSE (DEBUG, fprintf (stdout, "start processing function\n"));
if (root == NULL) {
VERBOSE (INFO, fprintf (stdout, "Func: %d\n", function->func));
- new = newelement (function->func, function->nbops, function->prio);
- if (new == NULL) {
- return ERROR_OP;
- }
- root = new;
+ root = newelement (function->func, function->nbops, function->prio);
} else {
delelement (root);
return ERROR_OP;
VERBOSE (DEBUG, fprintf (stdout, "start processing constant\n"));
if (root == NULL) {
VERBOSE (INFO, fprintf (stdout, "Const: %d\n", constant->func));
- new = newelement (constant->func, constant->nbops, constant->prio);
- if (new == NULL) {
- return ERROR_OP;
- }
- root = new;
+ root = newelement (constant->func, constant->nbops, constant->prio);
} else {
delelement (root);
return ERROR_OP;
double value = strtod (str, &pt);
VERBOSE (INFO, fprintf (stdout, "Value: %f\n", value));
if (str != pt) {
- if (root == NULL) {
+ if ((root == NULL) || (root->prio == 6)) {
new = newelement (Val, 1, 5);
- if (new == NULL) {
- return ERROR_OP;
- }
new->value = value;
- root = new;
+ 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;
+ }
+ }
+ if (!found) {
+ delelement (new);
+ delelement (root);
+ return ERROR_OP;
+ }
+ }
str = pt;
} else if ((*str == '+') || (*str == '-')) {
if ((prio) && (prio > 1)) {
case Sqr: func = "Square Root"; break;
case Cos: func = "Cosine"; break;
case Sin: func = "Sine"; 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 Prog: func = "Program"; break;
+ case Print: func = "Print"; break;
}
fprintf (stdout, "Function: %s\n", func);
/* storage functions */
-double store (int index)
+void memory (int nb)
{
- if ((index > 0) && (index <= STORAGE_SIZE)) {
- storage[index - 1] = answer;
+ int i, l;
+ double *tmp = NULL;
+ if (nb != storage_size) {
+ l = (nb < storage_size) ? nb : storage_size;
+ tmp = (double *) calloc (nb, sizeof (double));
+ if (tmp == NULL) {
+ VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n"));
+ exit (1);
+ }
+ 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) [1, %d]\n", index, STORAGE_SIZE));
+ VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [%d, %d]\n", index, (storage_size) ? 1 : 0, storage_size));
}
- return answer;
+ return value;
}
double recall (int index)
{
- if ((index > 0) && (index <= STORAGE_SIZE)) {
+ 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) [1, %d]\n", index, STORAGE_SIZE));
+ 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, " %g", storage[i]);
+ 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 program_do (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)
void help (void)
{
fprintf (stdout, "calc is a simple calculator\n\n");
- fprintf (stdout, "supported operators:\n");
- fprintf (stdout, " + - * / %% ^\n\n");
- fprintf (stdout, "supported functions:\n");
- fprintf (stdout, " pow sqrt cos sin atan log exp\n\n");
- fprintf (stdout, "storage functions:\n");
- fprintf (stdout, " sto rcl\n\n");
- fprintf (stdout, "miscellaneous functions:\n");
- fprintf (stdout, " quit help\n\n");
- fprintf (stdout, "supported constants:\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");
}
case Div:
case Mod:
case Pow:
+ case Store:
+ case Equal:
+ case Diff:
+ case Ge:
+ case Le:
+ case Gt:
+ case Lt:
+ case And:
+ case Or:
if (root->ops[1]) {
op1 = evaluate_element (root->ops[1], nextmask);
- } else {
+ } else if (root->func != Store) {
VERBOSE (WARNING, fprintf (stdout, "error while evaluating (op[1])\n"));
return 0;
}
case Sqr:
case Cos:
case Sin:
+ case Tan:
+ case Acos:
+ case Asin:
case Atan:
case Log:
case Exp:
- case Store:
+ case Abs:
+ case Ceil:
+ case Floor:
case Recall:
+ case Inc:
+ case Dec:
+ case Not:
+ case Mem:
+ case Cond:
if (root->ops[0]) {
op0 = evaluate_element (root->ops[0], 0);
} else {
}
break;
case Disp:
+ case Clear:
case Quit:
case Help:
case Ans:
case Pi:
case E:
+ case Prog:
+ 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;
}
case Sqr: return sqrt (op0);
case Cos: return cos (op0);
case Sin: return sin (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);
- case Store: return store ((int)op0);
+ 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 Prog: return program_do (root->ops, root->nbops);
+ case Print: return print (op0);
}
return 0;
}
+char **generate_completion_list ()
+{
+ int i, j, l = 0;
+ char **list = (char **) calloc (NB_OPERATORS + NB_FUNCTIONS + NB_CONSTANTS + NB_SYMBOLS + 1, sizeof (char *));
+ if (list == NULL) {
+ VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n"));
+ exit (1);
+ }
+
+ 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