| 1 | #include <malloc.h> |
| 2 | #include <stdio.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #include "alloc.h" |
| 6 | #include "debug.h" |
| 7 | #include "parser.h" |
| 8 | #include "stack.h" |
| 9 | #include "storage.h" |
| 10 | |
| 11 | #include "program.h" |
| 12 | |
| 13 | /* global variables */ |
| 14 | |
| 15 | int argument_size = 0; |
| 16 | double *argument = NULL; |
| 17 | |
| 18 | workspace_t *programs = NULL; |
| 19 | int nb_programs = 0; |
| 20 | |
| 21 | /* program function */ |
| 22 | |
| 23 | void prog (int id, element_t *root) |
| 24 | { |
| 25 | int i, n = -1; |
| 26 | |
| 27 | if (programs == NULL) { |
| 28 | |
| 29 | /* initial memory allocation */ |
| 30 | programs = (workspace_t *) callocordie (1, sizeof (workspace_t)); |
| 31 | nb_programs = 1; |
| 32 | n = 0; |
| 33 | |
| 34 | } else { |
| 35 | |
| 36 | /* look for existing program */ |
| 37 | for (i = 0; i < nb_programs; i++) { |
| 38 | if ((programs + i)->id == id) { |
| 39 | n = i; |
| 40 | break; |
| 41 | } |
| 42 | } |
| 43 | if (n == -1) { |
| 44 | |
| 45 | /* new program */ |
| 46 | n = nb_programs++; |
| 47 | workspace_t *tmp = (workspace_t *) callocordie (nb_programs, sizeof (workspace_t)); |
| 48 | memcpy (tmp, programs, (nb_programs - 1) * sizeof (workspace_t)); |
| 49 | free (programs); |
| 50 | programs = tmp; |
| 51 | } else { |
| 52 | |
| 53 | /* clean old program */ |
| 54 | if ((programs + n)->storage) { |
| 55 | free ((programs + n)->storage); |
| 56 | } |
| 57 | if ((programs + n)->stack) { |
| 58 | free ((programs + n)->stack); |
| 59 | } |
| 60 | if ((programs + n)->root) { |
| 61 | delelement ((programs + n)->root); |
| 62 | } |
| 63 | if ((programs + n)->string) { |
| 64 | free ((programs + n)->string); |
| 65 | (programs + n)->string = NULL; |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | /* set program */ |
| 71 | (programs + n)->id = id; |
| 72 | (programs + n)->answer = 0; |
| 73 | (programs + n)->storage = NULL; |
| 74 | (programs + n)->storage_size = 0; |
| 75 | (programs + n)->stack = NULL; |
| 76 | (programs + n)->stack_size = 0; |
| 77 | (programs + n)->root = dupelement (root); |
| 78 | } |
| 79 | |
| 80 | double arg (int id) |
| 81 | { |
| 82 | double ret = 0; |
| 83 | if ((id <= 0) || (id > argument_size)) { |
| 84 | VERBOSE (WARNING, fprintf (stdout, "error out of bound (%d/%d)\n", id, argument_size)); |
| 85 | } else { |
| 86 | ret = argument[id - 1]; |
| 87 | } |
| 88 | return ret; |
| 89 | } |
| 90 | |
| 91 | double call (int id, int nbargs, element_t **args) |
| 92 | { |
| 93 | workspace_t tmp = {0}; |
| 94 | int i, l, n = -1; |
| 95 | double ret = 0; |
| 96 | |
| 97 | if (programs) { |
| 98 | |
| 99 | /* look for program */ |
| 100 | for (i = 0; i < nb_programs; i++) { |
| 101 | if ((programs + i)->id == id) { |
| 102 | n = i; |
| 103 | break; |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | if (n == -1) { |
| 108 | VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | /* store context */ |
| 113 | tmp.answer = answer; |
| 114 | tmp.argument = argument; |
| 115 | tmp.argument_size = argument_size; |
| 116 | tmp.storage = storage; |
| 117 | tmp.storage_size = storage_size; |
| 118 | tmp.stack = stack; |
| 119 | tmp.stack_size = stack_size; |
| 120 | |
| 121 | /* change context */ |
| 122 | answer = 0; |
| 123 | storage = (programs + n)->storage; |
| 124 | storage_size = (programs + n)->storage_size; |
| 125 | argument = NULL; |
| 126 | argument_size = 0; |
| 127 | stack = (programs + n)->stack; |
| 128 | stack_size = (programs + n)->stack_size; |
| 129 | if (nbargs > 0) { |
| 130 | argument = (double *) callocordie (nbargs, sizeof (double)); |
| 131 | for (i = 0, l = 0; i < nbargs; l++) { |
| 132 | if (args[l]) { |
| 133 | argument[i++] = evaluate_element (args[l], 0); |
| 134 | } |
| 135 | } |
| 136 | argument_size = nbargs; |
| 137 | } |
| 138 | |
| 139 | /* evaluate program */ |
| 140 | element_t *elements = dupelement ((programs + n)->root); |
| 141 | ret = evaluate_element (elements, 0); |
| 142 | delelement (elements); |
| 143 | (programs + n)->answer = answer; |
| 144 | (programs + n)->storage = storage; |
| 145 | (programs + n)->storage_size = storage_size; |
| 146 | if (argument) { |
| 147 | free (argument); |
| 148 | } |
| 149 | (programs + n)->stack = stack; |
| 150 | (programs + n)->stack_size = stack_size; |
| 151 | |
| 152 | /* restore context */ |
| 153 | answer = tmp.answer; |
| 154 | storage = tmp.storage; |
| 155 | storage_size = tmp.storage_size; |
| 156 | argument = tmp.argument; |
| 157 | argument_size = tmp.argument_size; |
| 158 | stack = tmp.stack; |
| 159 | stack_size = tmp.stack_size; |
| 160 | |
| 161 | return ret; |
| 162 | } |
| 163 | |
| 164 | void list () |
| 165 | { |
| 166 | int i; |
| 167 | fprintf (stdout, "programs:"); |
| 168 | for (i = 0; i < nb_programs; i++) { |
| 169 | fprintf (stdout, " %d", (programs + i)->id); |
| 170 | } |
| 171 | fprintf (stdout, "\n"); |
| 172 | } |
| 173 | |
| 174 | void edit (int id) |
| 175 | { |
| 176 | int i, n = -1; |
| 177 | |
| 178 | if (programs) { |
| 179 | |
| 180 | /* look for program */ |
| 181 | for (i = 0; i < nb_programs; i++) { |
| 182 | if ((programs + i)->id == id) { |
| 183 | n = i; |
| 184 | break; |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | if (n == -1) { |
| 189 | VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 190 | return; |
| 191 | } |
| 192 | |
| 193 | /* set string program */ |
| 194 | fprintf (stdout, "edit: %s\n", (programs + n)->string); |
| 195 | } |
| 196 | |
| 197 | void savestring (int id, char *string) |
| 198 | { |
| 199 | int i, n = -1; |
| 200 | |
| 201 | if (programs) { |
| 202 | |
| 203 | /* look for program */ |
| 204 | for (i = 0; i < nb_programs; i++) { |
| 205 | if ((programs + i)->id == id) { |
| 206 | n = i; |
| 207 | break; |
| 208 | } |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | /* unnecesary code */ |
| 213 | //if (n == -1) { |
| 214 | // VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 215 | // return; |
| 216 | //} |
| 217 | //if ((programs + n)->string) { |
| 218 | // free ((programs + n)->string); |
| 219 | //} |
| 220 | |
| 221 | if (string) { |
| 222 | (programs + n)->string = strdup (string); |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | void del (int id) |
| 227 | { |
| 228 | int i, j, n = -1; |
| 229 | |
| 230 | if (programs) { |
| 231 | |
| 232 | /* look for program */ |
| 233 | for (i = 0; i < nb_programs; i++) { |
| 234 | if ((programs + i)->id == id) { |
| 235 | n = i; |
| 236 | break; |
| 237 | } |
| 238 | } |
| 239 | } |
| 240 | if (n == -1) { |
| 241 | VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | /* clean program */ |
| 246 | if ((programs + n)->storage) { |
| 247 | free ((programs + n)->storage); |
| 248 | } |
| 249 | if ((programs + n)->stack) { |
| 250 | free ((programs + n)->stack); |
| 251 | } |
| 252 | if ((programs + n)->root) { |
| 253 | delelement ((programs + n)->root); |
| 254 | } |
| 255 | if ((programs + n)->string) { |
| 256 | free ((programs + n)->string); |
| 257 | } |
| 258 | |
| 259 | /* remove entry */ |
| 260 | workspace_t *tmp = (workspace_t *) callocordie (nb_programs - 1, sizeof (workspace_t)); |
| 261 | for (i = 0, j = 0; i < nb_programs; i++) { |
| 262 | if (i != n) { |
| 263 | memcpy (tmp + j, programs + i, sizeof (workspace_t)); |
| 264 | j++; |
| 265 | } |
| 266 | } |
| 267 | free (programs); |
| 268 | programs = tmp; |
| 269 | nb_programs--; |
| 270 | } |
| 271 | |
| 272 | /* vim: set ts=4 sw=4 et: */ |