| 1 |
/* |
| 2 |
* l-system representation and evaluation |
| 3 |
*/ |
| 4 |
|
| 5 |
#include "config.h" |
| 6 |
|
| 7 |
#include <algorithm> |
| 8 |
#include <iterator> |
| 9 |
#include <iostream> |
| 10 |
#include <sstream> |
| 11 |
|
| 12 |
#include <cstdlib> |
| 13 |
#include <cmath> |
| 14 |
|
| 15 |
#include "tokens.h" |
| 16 |
#include "DLGLexer.h" |
| 17 |
#include "Parser.h" |
| 18 |
|
| 19 |
#include "lsys.h" |
| 20 |
|
| 21 |
#ifndef M_PI |
| 22 |
# define M_PI 3.14159265358979323846 /* pi */ |
| 23 |
#endif |
| 24 |
|
| 25 |
bool operator <(const lsys::arg_spec &a, const lsys::arg_spec &b) t_no |
| 26 |
{ |
| 27 |
return a.nargs < b.nargs |
| 28 |
|| (a.nargs == b.nargs && a.arg < b.arg) |
| 29 |
|| (a.arg == b.arg && a.str < b.str); |
| 30 |
} |
| 31 |
|
| 32 |
ostream &operator <<(ostream &o, const file_pos &p) t_no |
| 33 |
{ |
| 34 |
return o << p.path << ":" << p.line << ", column " << p.col; |
| 35 |
} |
| 36 |
|
| 37 |
ostream &operator <<(ostream &o, const module_vec &v) t_no |
| 38 |
{ |
| 39 |
// o << "[" << hex << (long)&v << " " << (long)v.s << dec << "|";//D |
| 40 |
|
| 41 |
for (module_pos i = v.begin (); i != v.end (); ++i) |
| 42 |
o << *i << " "; |
| 43 |
|
| 44 |
// o << "]"; |
| 45 |
|
| 46 |
return o; |
| 47 |
} |
| 48 |
|
| 49 |
ostream &operator <<(ostream &o, const module &m) t_no |
| 50 |
{ |
| 51 |
static const char *delim[2][2] = { |
| 52 |
{ ",", ")" }, |
| 53 |
{ " ", "" } |
| 54 |
}; |
| 55 |
|
| 56 |
// if (m.is_expr) o << "E:"; |
| 57 |
// if (m.is_num) o << "N:"; |
| 58 |
|
| 59 |
o << m.str; |
| 60 |
|
| 61 |
if (!m.empty ()) |
| 62 |
{ |
| 63 |
o << (m.str.size () ? "(" : "'"); |
| 64 |
|
| 65 |
for (module_pos i = m.begin (); i != m.end (); ) |
| 66 |
{ |
| 67 |
o << *i; |
| 68 |
o << delim[!m.str.size ()][++i == m.end ()]; |
| 69 |
} |
| 70 |
} |
| 71 |
|
| 72 |
return o; |
| 73 |
} |
| 74 |
|
| 75 |
ostream &operator <<(ostream &o, const rule &r) t_no |
| 76 |
{ |
| 77 |
if (r.pre.size ()) |
| 78 |
o << r.pre << " < "; |
| 79 |
|
| 80 |
o << (module)r << " "; |
| 81 |
if (r.post.size ()) |
| 82 |
o << "> " << r.post << " "; |
| 83 |
|
| 84 |
if (r.constraint.is_expr) |
| 85 |
o << " '" << r.constraint << "' "; |
| 86 |
|
| 87 |
o << "=> " << r.repl; |
| 88 |
o << ", " << r.iterations; |
| 89 |
return o; |
| 90 |
} |
| 91 |
|
| 92 |
static ostream &operator <<(ostream &o, const lsys::arg_spec &a) t_no |
| 93 |
{ |
| 94 |
return o << "<" << a.str << "/" << a.nargs << ", " << a.arg << ">"; |
| 95 |
} |
| 96 |
|
| 97 |
ostream &operator <<(ostream &o, const lsys &l) t_no |
| 98 |
{ |
| 99 |
for (module_map::const_iterator i = l.defines.begin (); i != l.defines.end (); ++i) |
| 100 |
o << "DEFINE: " << i->first << " = " << i->second << endl; |
| 101 |
|
| 102 |
o << "PARENT: " << (l.parent ? l.parent->str : "(none)") << endl; |
| 103 |
|
| 104 |
o << "CHILDREN:"; |
| 105 |
for (hash_map<string, lsys *>::const_iterator i = l.sub_lsys.begin (); i != l.sub_lsys.end (); ++i) |
| 106 |
o << " " << i->second->str; |
| 107 |
o << endl; |
| 108 |
|
| 109 |
o << "IGNORE: "; |
| 110 |
copy (l.ignore_module.begin (), l.ignore_module.end (), ostream_iterator<const string>(o, " ")); |
| 111 |
o << endl; |
| 112 |
|
| 113 |
for (rule_map::const_iterator i = l.rules.begin (); i != l.rules.end (); ++i) |
| 114 |
for (rule_map::mapped_type::const_iterator j = i->second.begin (); j != i->second.end (); ++j) |
| 115 |
o << "RULE " << i->first << "/" << j->size () << ": " << *j << endl; |
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|
| 117 |
o << "ARG_IS_NUMERIC:"; |
| 118 |
for (set<lsys::arg_spec>::const_iterator i = l.arg_is_numeric.begin (); |
| 119 |
i != l.arg_is_numeric.end (); |
| 120 |
++i) |
| 121 |
o << " " << *i; |
| 122 |
o << endl; |
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|
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return o; |
| 125 |
} |
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|
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lsys::lsys () t_no |
| 128 |
{ |
| 129 |
parent = 0; |
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|
| 131 |
arg_spec s; |
| 132 |
s.str = "f"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
| 133 |
s.str = "F"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
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s.str = "+"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
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s.str = "-"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
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s.str = "^"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
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s.str = "&"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
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s.str = "/"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
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s.str = "\\"; s.nargs = 1; s.arg = 0; arg_is_numeric.insert (s); |
| 140 |
|
| 141 |
ignore_module.insert ("attr"); |
| 142 |
} |
| 143 |
|
| 144 |
lsys::~lsys () t_no |
| 145 |
{ |
| 146 |
hash_map<string, lsys*>::iterator i; |
| 147 |
|
| 148 |
while ((i = sub_lsys.begin ()) != sub_lsys.end ()) |
| 149 |
{ |
| 150 |
delete i->second; |
| 151 |
sub_lsys.erase (i); |
| 152 |
} |
| 153 |
} |
| 154 |
|
| 155 |
void lsys::mark_numeric (const map<string, arg_spec> &which, const module &v) t_no |
| 156 |
{ |
| 157 |
for (module_pos i = v.begin (); i != v.end (); ++i) |
| 158 |
{ |
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map<string,arg_spec>::const_iterator d = which.find (i->str); |
| 160 |
|
| 161 |
if (d != which.end ()) |
| 162 |
arg_is_numeric.insert (d->second); |
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else |
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for (module_pos a = i->begin (); a != i->end (); a++) |
| 165 |
mark_numeric (which, *a); |
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} |
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} |
| 168 |
|
| 169 |
void lsys::add_lsys (lsys *l) t_err |
| 170 |
{ |
| 171 |
if (!l->str.size ()) |
| 172 |
{ |
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delete l; |
| 174 |
throw error ("unable to determine ruleset name", *l); |
| 175 |
} |
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|
| 177 |
l->parent = this; |
| 178 |
sub_lsys [l->str] = l; |
| 179 |
} |
| 180 |
|
| 181 |
void lsys::add_rule (rule r) t_err |
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{ |
| 183 |
map<string,arg_spec> which; |
| 184 |
arg_spec spec; |
| 185 |
|
| 186 |
spec.str = r.str; |
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spec.nargs = r.size (); |
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spec.arg = 0; |
| 189 |
|
| 190 |
for (rule::iterator i = r.begin (); i != r.end (); ++i, spec.arg++) |
| 191 |
if (i->size () != 0) |
| 192 |
throw error("rule parameter too complex", *i); |
| 193 |
else if (i->is_expr) |
| 194 |
{ |
| 195 |
if (i->is_num) |
| 196 |
{ |
| 197 |
char arg[30]; |
| 198 |
sprintf (arg, "_arg%d", spec.arg); |
| 199 |
|
| 200 |
module m(arg); m.is_expr = 1; |
| 201 |
module eq("==", m, *i); eq.is_expr = 1; |
| 202 |
|
| 203 |
r.constraint = r.constraint.empty () |
| 204 |
? eq |
| 205 |
: module ("&&", r.constraint, eq); |
| 206 |
*i = m; |
| 207 |
} |
| 208 |
which.insert (pair<string, arg_spec>(i->str, spec)); |
| 209 |
} |
| 210 |
|
| 211 |
mark_numeric (which, r.constraint); |
| 212 |
|
| 213 |
if (rules.size () == 0) |
| 214 |
module::operator =((module)r); |
| 215 |
|
| 216 |
rules[r.str].push_back (r); |
| 217 |
} |
| 218 |
|
| 219 |
static double eval_expr_2 (const module &m, const module_map &l, const module_map &g) t_err |
| 220 |
{ |
| 221 |
switch (m.size ()) |
| 222 |
{ |
| 223 |
case 0: |
| 224 |
{ |
| 225 |
if (m.is_num) |
| 226 |
return m.num; |
| 227 |
else |
| 228 |
{ |
| 229 |
module_map::const_iterator i; |
| 230 |
|
| 231 |
if ((i = l.find (m.str)) != l.end () |
| 232 |
|| (i = g.find (m.str)) != g.end ()) |
| 233 |
return eval_expr (i->second, g, module_map ()); |
| 234 |
|
| 235 |
throw error ("undefined identifier in expression", m); |
| 236 |
} |
| 237 |
} |
| 238 |
|
| 239 |
case 1: |
| 240 |
if (m.str == "!" ) return !eval_expr_2 (m.first (), l, g); |
| 241 |
if (m.str == "sin" ) return sin (eval_expr_2 (m.first (), l, g)); |
| 242 |
if (m.str == "cos" ) return cos (eval_expr_2 (m.first (), l, g)); |
| 243 |
if (m.str == "tan" ) return tan (eval_expr_2 (m.first (), l, g)); |
| 244 |
if (m.str == "asin" ) return asin (eval_expr_2 (m.first (), l, g)); |
| 245 |
if (m.str == "acos" ) return acos (eval_expr_2 (m.first (), l, g)); |
| 246 |
if (m.str == "atan" ) return atan (eval_expr_2 (m.first (), l, g)); |
| 247 |
if (m.str == "int" ) return int (eval_expr_2 (m.first (), l, g)); |
| 248 |
if (m.str == "ceil" ) return ceil (eval_expr_2 (m.first (), l, g)); |
| 249 |
if (m.str == "floor" ) return floor(eval_expr_2 (m.first (), l, g)); |
| 250 |
if (m.str == "rand" ) return (eval_expr_2 (m.first (), l, g)) * rand () / RAND_MAX; |
| 251 |
if (m.str == "irand" ) return int ((eval_expr_2 (m.first (), l, g)) * rand () / RAND_MAX); |
| 252 |
if (m.str == "log" ) return log (eval_expr_2 (m.first (), l, g)); |
| 253 |
if (m.str == "abs" ) return abs (eval_expr_2 (m.first (), l, g)); |
| 254 |
if (m.str == "deg" ) return (eval_expr_2 (m.first (), l, g)) * 180.0 / M_PI; |
| 255 |
if (m.str == "rad" ) return (eval_expr_2 (m.first (), l, g)) * M_PI / 180.0; |
| 256 |
if (m.str == "sqrt" ) return sqrt (eval_expr_2 (m.first (), l, g)); |
| 257 |
|
| 258 |
throw error ("unknown unary function in expression", m); |
| 259 |
|
| 260 |
case 2: |
| 261 |
if (m.str == "+" ) return eval_expr_2 (m.first (), l, g) + eval_expr_2 (m.second (), l, g); |
| 262 |
if (m.str == "-" ) return eval_expr_2 (m.first (), l, g) - eval_expr_2 (m.second (), l, g); |
| 263 |
if (m.str == "*" ) return eval_expr_2 (m.first (), l, g) * eval_expr_2 (m.second (), l, g); |
| 264 |
if (m.str == "/" ) return eval_expr_2 (m.first (), l, g) / eval_expr_2 (m.second (), l, g); |
| 265 |
if (m.str == "<" ) return eval_expr_2 (m.first (), l, g) < eval_expr_2 (m.second (), l, g); |
| 266 |
if (m.str == "<=") return eval_expr_2 (m.first (), l, g) <= eval_expr_2 (m.second (), l, g); |
| 267 |
if (m.str == "==") return equal (eval_expr_2 (m.first (), l, g), eval_expr_2 (m.second (), l, g)); |
| 268 |
if (m.str == "!=") return eval_expr_2 (m.first (), l, g) != eval_expr_2 (m.second (), l, g); |
| 269 |
if (m.str == ">" ) return eval_expr_2 (m.first (), l, g) > eval_expr_2 (m.second (), l, g); |
| 270 |
if (m.str == ">=") return eval_expr_2 (m.first (), l, g) >= eval_expr_2 (m.second (), l, g); |
| 271 |
if (m.str == "&&") return eval_expr_2 (m.first (), l, g) && eval_expr_2 (m.second (), l, g); |
| 272 |
if (m.str == "||") return eval_expr_2 (m.first (), l, g) || eval_expr_2 (m.second (), l, g); |
| 273 |
if (m.str == "%" ) return fmod (eval_expr_2 (m.first (), l, g), eval_expr_2 (m.second (), l, g)); |
| 274 |
if (m.str == "^" ) return pow (eval_expr_2 (m.first (), l, g), eval_expr_2 (m.second (), l, g)); |
| 275 |
|
| 276 |
throw error ("unknown binary function in expression", m); |
| 277 |
|
| 278 |
default: |
| 279 |
throw error ("can only evaluate modules with 0, 1 or 2 arguments", m); |
| 280 |
} |
| 281 |
|
| 282 |
throw error("reached end of non-void function eval_expr_2", m); |
| 283 |
} |
| 284 |
|
| 285 |
double eval_expr (const module &expr, const module_map &locals, const module_map &globals) t_err |
| 286 |
{ |
| 287 |
return eval_expr_2 (expr, locals, globals); |
| 288 |
} |
| 289 |
|
| 290 |
double lsys::eval_numeric (const module &expr, module_map context) const t_err |
| 291 |
{ |
| 292 |
return eval_expr (expr, context, defines); |
| 293 |
} |
| 294 |
|
| 295 |
static void get_vars (const module_vec &par, const module_vec &arg, module_map &vars) t_no |
| 296 |
{ |
| 297 |
for (module_pos a = arg.begin (), b = par.begin (); |
| 298 |
a != arg.end (); |
| 299 |
++a, ++b) |
| 300 |
vars [b->str] = *a; |
| 301 |
} |
| 302 |
|
| 303 |
bool lsys::match_rule (const rule &r, const module_vec &v, module_pos i, module_map &vars) const t_err |
| 304 |
{ |
| 305 |
int nested = 0; |
| 306 |
|
| 307 |
if (r.module::match (*i)) |
| 308 |
{ |
| 309 |
module_pos j; |
| 310 |
|
| 311 |
// match heading context |
| 312 |
j = i; |
| 313 |
for (module_pos z = r.pre.end (); |
| 314 |
z != r.pre.begin (); |
| 315 |
) |
| 316 |
{ |
| 317 |
if (j == v.begin ()) |
| 318 |
return false; |
| 319 |
|
| 320 |
--j; |
| 321 |
if (j->str == "]") |
| 322 |
nested++; |
| 323 |
else if (j->str == "[") |
| 324 |
nested = nested ? nested-1 : nested; |
| 325 |
else if (!nested && ignore_module.find (j->str) == ignore_module.end ()) |
| 326 |
{ |
| 327 |
--z; |
| 328 |
if (!z->match (*j)) |
| 329 |
return false; |
| 330 |
|
| 331 |
get_vars (*z, *j, vars); |
| 332 |
} |
| 333 |
} |
| 334 |
|
| 335 |
// match trailing context |
| 336 |
j = i; |
| 337 |
for (module_pos z = r.post.begin (); |
| 338 |
z != r.post.end (); |
| 339 |
) |
| 340 |
{ |
| 341 |
++j; |
| 342 |
if (j == v.end ()) |
| 343 |
return false; |
| 344 |
|
| 345 |
if (j->str == "[") |
| 346 |
nested++; |
| 347 |
else if (j->str == "]") |
| 348 |
nested = nested ? nested-1 : nested; |
| 349 |
else if (!nested && ignore_module.find (j->str) == ignore_module.end ()) |
| 350 |
{ |
| 351 |
if (!z->match (*j)) |
| 352 |
return false; |
| 353 |
|
| 354 |
get_vars (*z, *j, vars); |
| 355 |
++z; |
| 356 |
} |
| 357 |
} |
| 358 |
|
| 359 |
get_vars (r, *i, vars); |
| 360 |
//FIXME: add pattern matching ??? |
| 361 |
return eval_numeric (r.constraint, vars); |
| 362 |
} |
| 363 |
|
| 364 |
return false; |
| 365 |
} |
| 366 |
|
| 367 |
module lsys::expand (const module_map &c, const module &m) const t_err |
| 368 |
{ |
| 369 |
module_map::const_iterator n; |
| 370 |
|
| 371 |
if ((n = c.find (m.str)) != c.end ()) |
| 372 |
return n->second; |
| 373 |
else |
| 374 |
{ |
| 375 |
arg_spec spec; |
| 376 |
spec.str = m.str; |
| 377 |
spec.nargs = m.size (); |
| 378 |
spec.arg = 0; |
| 379 |
|
| 380 |
module k; |
| 381 |
k.str = m.str; |
| 382 |
k.num = m.num; |
| 383 |
k.is_num = m.is_num; |
| 384 |
k.is_expr = m.is_expr; |
| 385 |
k.where = m.where; |
| 386 |
|
| 387 |
for (module_pos i = m.begin (); i != m.end (); ++i, spec.arg++) |
| 388 |
if (arg_is_numeric.find (spec) != arg_is_numeric.end ()) |
| 389 |
k.push_back (eval_numeric (*i, c)); |
| 390 |
else |
| 391 |
k.push_back (expand (c, *i)); |
| 392 |
|
| 393 |
return k; |
| 394 |
} |
| 395 |
} |
| 396 |
|
| 397 |
static void replace_modules(module_vec &v, const module_map &m) t_no |
| 398 |
{ |
| 399 |
module_map::const_iterator c; |
| 400 |
|
| 401 |
for (module::iterator i = v.begin (); i != v.end (); ++i) |
| 402 |
if (i->empty () && (c = m.find (i->str)) != m.end ()) |
| 403 |
*i = c->second; |
| 404 |
else |
| 405 |
replace_modules (*i, m); |
| 406 |
} |
| 407 |
|
| 408 |
bool operator <(const module &a, const module &b) t_no |
| 409 |
{ |
| 410 |
if ((module_vec)a < (module_vec)b) |
| 411 |
return true; |
| 412 |
else |
| 413 |
return a.str < b.str; |
| 414 |
} |
| 415 |
|
| 416 |
struct lsys_module { |
| 417 |
const lsys *sys; |
| 418 |
module_vec v; |
| 419 |
}; |
| 420 |
|
| 421 |
static bool operator <(const lsys_module &a, const lsys_module &b) |
| 422 |
{ |
| 423 |
if (a.v < b.v) |
| 424 |
return true; |
| 425 |
else |
| 426 |
return (long)a.sys < (long)b.sys; |
| 427 |
} |
| 428 |
|
| 429 |
bool lsys::eval (module_vec &v) const t_err |
| 430 |
{ |
| 431 |
#if 0 |
| 432 |
typedef map<lsys_module, pair<bool, module_vec> > eval_cache; |
| 433 |
static eval_cache cache; |
| 434 |
|
| 435 |
eval_cache::iterator ci; |
| 436 |
|
| 437 |
{ //FIXME, why can't I just re-use "ck" later?? |
| 438 |
lsys_module ck; |
| 439 |
ck.sys = this; |
| 440 |
ck.v = v; |
| 441 |
|
| 442 |
if ((ci = cache.find (ck)) != cache.end ()) |
| 443 |
{ |
| 444 |
if (ci->second.first) |
| 445 |
v = ci->second.second; |
| 446 |
|
| 447 |
return ci->second.first; |
| 448 |
} |
| 449 |
} |
| 450 |
#endif |
| 451 |
|
| 452 |
bool changed = false; |
| 453 |
module_vec res; |
| 454 |
module_map vars; |
| 455 |
|
| 456 |
for (module_pos i = v.begin (); i != v.end (); ++i) |
| 457 |
{ |
| 458 |
rule_map::const_iterator r = rules.find (i->str); |
| 459 |
|
| 460 |
if (r != rules.end ()) |
| 461 |
for (rule_map::mapped_type::const_iterator j = r->second.begin (); j != r->second.end (); ++j) |
| 462 |
{ |
| 463 |
vars.erase (vars.begin (), vars.end ()); |
| 464 |
|
| 465 |
if (match_rule (*j, v, i, vars)) |
| 466 |
{ |
| 467 |
double it = eval_numeric (j->iterations, vars); |
| 468 |
|
| 469 |
changed = true; |
| 470 |
|
| 471 |
if (it >= 1.0) |
| 472 |
{ |
| 473 |
module_vec x; |
| 474 |
|
| 475 |
for (module_pos i = j->repl.begin (); i != j->repl.end (); ++i) |
| 476 |
x.push_back (expand (vars, *i)); |
| 477 |
|
| 478 |
do { |
| 479 |
eval (x); |
| 480 |
it--; |
| 481 |
} while (it > 0); |
| 482 |
|
| 483 |
res.insert (res.end (), x.begin (), x.end ()); |
| 484 |
} |
| 485 |
else |
| 486 |
for (module_pos i = j->repl.begin (); i != j->repl.end (); ++i) |
| 487 |
res.push_back (expand (vars, *i)); |
| 488 |
|
| 489 |
goto skip; |
| 490 |
} |
| 491 |
} |
| 492 |
|
| 493 |
// no rule matched.. |
| 494 |
res.push_back (*i); |
| 495 |
skip:; |
| 496 |
} |
| 497 |
|
| 498 |
replace_modules (res, defines); |
| 499 |
#if 0 |
| 500 |
if ((!changed && v.size () < 10) || res.size () < 20) |
| 501 |
{ |
| 502 |
eval_cache::mapped_type ce(changed, changed ? res : module_vec ()); |
| 503 |
lsys_module ck; |
| 504 |
ck.sys = this; |
| 505 |
ck.v = v; //FIXME not even this works |
| 506 |
cache.insert (ci, eval_cache::value_type (ck, ce)); |
| 507 |
} |
| 508 |
#endif |
| 509 |
|
| 510 |
v.erase (); |
| 511 |
|
| 512 |
for (module_pos i = res.begin (); i != res.end (); ) |
| 513 |
{ |
| 514 |
if (i->str == "%") |
| 515 |
{ |
| 516 |
int nested = 1; |
| 517 |
|
| 518 |
while (++i != res.end ()) |
| 519 |
if (i->str == "[") |
| 520 |
nested++; |
| 521 |
else if (i->str == "]" && !(--nested)) |
| 522 |
break; |
| 523 |
} |
| 524 |
else |
| 525 |
v.push_back (*i++); |
| 526 |
} |
| 527 |
|
| 528 |
return changed; |
| 529 |
} |
| 530 |
|
| 531 |
bool module::is_func (const string &func) const t_no |
| 532 |
{ |
| 533 |
return str == func && size () == 0; |
| 534 |
} |
| 535 |
|
| 536 |
bool module::is_func (const string &func, double &arg1) const t_no |
| 537 |
{ |
| 538 |
if (str == func && size () == 1) |
| 539 |
{ |
| 540 |
arg1 = eval_expr (first ()); |
| 541 |
return true; |
| 542 |
} |
| 543 |
return false; |
| 544 |
} |
| 545 |
|
| 546 |
bool module::is_func (const string &func, string &arg1, module &arg2) const t_no |
| 547 |
{ |
| 548 |
if (str == func && size () == 2 && first().is_expr) |
| 549 |
{ |
| 550 |
arg1 = first ().str; |
| 551 |
arg2 = second (); |
| 552 |
return true; |
| 553 |
} |
| 554 |
|
| 555 |
return false; |
| 556 |
} |
| 557 |
|
| 558 |
bool module::is_func (const string &func, string &arg1, double &arg2) const t_no |
| 559 |
{ |
| 560 |
if (str == func && size () == 2 && first().is_expr) |
| 561 |
{ |
| 562 |
arg1 = first ().str; |
| 563 |
arg2 = eval_expr (second ()); |
| 564 |
return true; |
| 565 |
} |
| 566 |
|
| 567 |
return false; |
| 568 |
} |
| 569 |
|
| 570 |
bool module::is_func (const string &func, string &arg1, string &arg2) const t_no |
| 571 |
{ |
| 572 |
if (str == func && size () == 2 && first().is_expr) |
| 573 |
{ |
| 574 |
arg1 = first ().str; |
| 575 |
arg2 = (string) second (); |
| 576 |
return true; |
| 577 |
} |
| 578 |
|
| 579 |
return false; |
| 580 |
} |
| 581 |
|
| 582 |
|
| 583 |
|
| 584 |
|
| 585 |
|
