/usr/include/boost/wave/util/cpp_iterator.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 | /*=============================================================================
Boost.Wave: A Standard compliant C++ preprocessor library
Definition of the preprocessor iterator
http://www.boost.org/
Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
Software License, Version 1.0. (See accompanying file
LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#if !defined(CPP_ITERATOR_HPP_175CA88F_7273_43FA_9039_BCF7459E1F29_INCLUDED)
#define CPP_ITERATOR_HPP_175CA88F_7273_43FA_9039_BCF7459E1F29_INCLUDED
#include <string>
#include <vector>
#include <list>
#include <cstdlib>
#include <cctype>
#include <boost/assert.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/filesystem/path.hpp>
#include <boost/filesystem/operations.hpp>
#include <boost/spirit/include/classic_multi_pass.hpp>
#include <boost/spirit/include/classic_parse_tree_utils.hpp>
#include <boost/wave/wave_config.hpp>
#include <boost/pool/pool_alloc.hpp>
#include <boost/wave/util/insert_whitespace_detection.hpp>
#include <boost/wave/util/macro_helpers.hpp>
#include <boost/wave/util/cpp_macromap_utils.hpp>
#include <boost/wave/util/interpret_pragma.hpp>
#include <boost/wave/util/transform_iterator.hpp>
#include <boost/wave/util/functor_input.hpp>
#include <boost/wave/util/filesystem_compatibility.hpp>
#include <boost/wave/grammars/cpp_grammar_gen.hpp>
#include <boost/wave/grammars/cpp_expression_grammar_gen.hpp>
#if BOOST_WAVE_ENABLE_COMMANDLINE_MACROS != 0
#include <boost/wave/grammars/cpp_predef_macros_gen.hpp>
#endif
#include <boost/wave/whitespace_handling.hpp>
#include <boost/wave/cpp_iteration_context.hpp>
#include <boost/wave/cpp_exceptions.hpp>
#include <boost/wave/language_support.hpp>
// this must occur after all of the includes and before any code appears
#ifdef BOOST_HAS_ABI_HEADERS
#include BOOST_ABI_PREFIX
#endif
///////////////////////////////////////////////////////////////////////////////
namespace boost {
namespace wave {
namespace util {
///////////////////////////////////////////////////////////////////////////////
// retrieve the macro name from the parse tree
template <
typename ContextT, typename ParseNodeT, typename TokenT,
typename PositionT
>
inline bool
retrieve_macroname(ContextT& ctx, ParseNodeT const &node,
boost::spirit::classic::parser_id id, TokenT ¯oname, PositionT& act_pos,
bool update_position)
{
ParseNodeT const *name_node = 0;
using boost::spirit::classic::find_node;
if (!find_node(node, id, &name_node))
{
// ill formed define statement (unexpected, should not happen)
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, bad_define_statement,
"bad parse tree (unexpected)", act_pos);
return false;
}
typename ParseNodeT::children_t const &children = name_node->children;
if (0 == children.size() ||
children.front().value.begin() == children.front().value.end())
{
// ill formed define statement (unexpected, should not happen)
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, bad_define_statement,
"bad parse tree (unexpected)", act_pos);
return false;
}
// retrieve the macro name
macroname = *children.front().value.begin();
if (update_position) {
macroname.set_position(act_pos);
act_pos.set_column(act_pos.get_column() + macroname.get_value().size());
}
return true;
}
///////////////////////////////////////////////////////////////////////////////
// retrieve the macro parameters or the macro definition from the parse tree
template <typename ParseNodeT, typename ContainerT, typename PositionT>
inline bool
retrieve_macrodefinition(
ParseNodeT const &node, boost::spirit::classic::parser_id id,
ContainerT ¯odefinition, PositionT& act_pos, bool update_position)
{
using namespace boost::wave;
typedef typename ParseNodeT::const_tree_iterator const_tree_iterator;
// find macro parameters/macro definition inside the parse tree
std::pair<const_tree_iterator, const_tree_iterator> nodes;
using boost::spirit::classic::get_node_range;
if (get_node_range(node, id, nodes)) {
// copy all parameters to the supplied container
typename ContainerT::iterator last_nonwhite = macrodefinition.end();
const_tree_iterator end = nodes.second;
for (const_tree_iterator cit = nodes.first; cit != end; ++cit) {
if ((*cit).value.begin() != (*cit).value.end()) {
typename ContainerT::iterator inserted = macrodefinition.insert(
macrodefinition.end(), *(*cit).value.begin());
if (!IS_CATEGORY(macrodefinition.back(), WhiteSpaceTokenType) &&
T_NEWLINE != token_id(macrodefinition.back()) &&
T_EOF != token_id(macrodefinition.back()))
{
last_nonwhite = inserted;
}
if (update_position) {
(*inserted).set_position(act_pos);
act_pos.set_column(
act_pos.get_column() + (*inserted).get_value().size());
}
}
}
// trim trailing whitespace (leading whitespace is trimmed by the grammar)
if (last_nonwhite != macrodefinition.end()) {
if (update_position) {
act_pos.set_column((*last_nonwhite).get_position().get_column() +
(*last_nonwhite).get_value().size());
}
macrodefinition.erase(++last_nonwhite, macrodefinition.end());
}
return true;
}
return false;
}
#if BOOST_WAVE_ENABLE_COMMANDLINE_MACROS != 0
///////////////////////////////////////////////////////////////////////////////
// add an additional predefined macro given by a string (MACRO(x)=definition)
template <typename ContextT>
bool add_macro_definition(ContextT &ctx, std::string macrostring,
bool is_predefined, boost::wave::language_support language)
{
typedef typename ContextT::token_type token_type;
typedef typename ContextT::lexer_type lexer_type;
typedef typename token_type::position_type position_type;
typedef boost::wave::grammars::predefined_macros_grammar_gen<lexer_type>
predef_macros_type;
using namespace boost::wave;
using namespace std; // isspace is in std namespace for some systems
// skip leading whitespace
std::string::iterator begin = macrostring.begin();
std::string::iterator end = macrostring.end();
while(begin != end && isspace(*begin))
++begin;
// parse the macro definition
position_type act_pos("<command line>");
boost::spirit::classic::tree_parse_info<lexer_type> hit =
predef_macros_type::parse_predefined_macro(
lexer_type(begin, end, position_type(), language), lexer_type());
if (!hit.match || (!hit.full && T_EOF != token_id(*hit.stop))) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, bad_macro_definition,
macrostring.c_str(), act_pos);
return false;
}
// retrieve the macro definition from the parse tree
token_type macroname;
std::vector<token_type> macroparameters;
typename ContextT::token_sequence_type macrodefinition;
bool has_parameters = false;
if (!boost::wave::util::retrieve_macroname(ctx, *hit.trees.begin(),
BOOST_WAVE_PLAIN_DEFINE_ID, macroname, act_pos, true))
return false;
has_parameters = boost::wave::util::retrieve_macrodefinition(*hit.trees.begin(),
BOOST_WAVE_MACRO_PARAMETERS_ID, macroparameters, act_pos, true);
boost::wave::util::retrieve_macrodefinition(*hit.trees.begin(),
BOOST_WAVE_MACRO_DEFINITION_ID, macrodefinition, act_pos, true);
// get rid of trailing T_EOF
if (!macrodefinition.empty() && token_id(macrodefinition.back()) == T_EOF)
macrodefinition.pop_back();
// If no macrodefinition is given, and the macro string does not end with a
// '=', then the macro should be defined with the value '1'
if (macrodefinition.empty() && '=' != macrostring[macrostring.size()-1])
macrodefinition.push_back(token_type(T_INTLIT, "1", act_pos));
// add the new macro to the macromap
return ctx.add_macro_definition(macroname, has_parameters, macroparameters,
macrodefinition, is_predefined);
}
#endif // BOOST_WAVE_ENABLE_COMMANDLINE_MACROS != 0
///////////////////////////////////////////////////////////////////////////////
} // namespace util
///////////////////////////////////////////////////////////////////////////////
// forward declaration
template <typename ContextT> class pp_iterator;
namespace impl {
///////////////////////////////////////////////////////////////////////////////
//
// pp_iterator_functor
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
class pp_iterator_functor {
public:
// interface to the boost::spirit::classic::iterator_policies::functor_input policy
typedef typename ContextT::token_type result_type;
// eof token
static result_type const eof;
private:
// type of a token sequence
typedef typename ContextT::token_sequence_type token_sequence_type;
typedef typename ContextT::lexer_type lexer_type;
typedef typename result_type::string_type string_type;
typedef typename result_type::position_type position_type;
typedef boost::wave::grammars::cpp_grammar_gen<lexer_type, token_sequence_type>
cpp_grammar_type;
// iteration context related types (an iteration context represents a current
// position in an included file)
typedef base_iteration_context<ContextT, lexer_type>
base_iteration_context_type;
typedef iteration_context<ContextT, lexer_type> iteration_context_type;
// parse tree related types
typedef typename cpp_grammar_type::node_factory_type node_factory_type;
typedef boost::spirit::classic::tree_parse_info<lexer_type, node_factory_type>
tree_parse_info_type;
typedef boost::spirit::classic::tree_match<lexer_type, node_factory_type>
parse_tree_match_type;
typedef typename parse_tree_match_type::node_t parse_node_type; // tree_node<node_val_data<> >
typedef typename parse_tree_match_type::parse_node_t parse_node_value_type; // node_val_data<>
typedef typename parse_tree_match_type::container_t parse_tree_type; // parse_node_type::children_t
public:
template <typename IteratorT>
pp_iterator_functor(ContextT &ctx_, IteratorT const &first_,
IteratorT const &last_, typename ContextT::position_type const &pos_)
: ctx(ctx_),
iter_ctx(new base_iteration_context_type(ctx,
lexer_type(first_, last_, pos_,
boost::wave::enable_prefer_pp_numbers(ctx.get_language())),
lexer_type(),
pos_.get_file().c_str()
)),
seen_newline(true), skipped_newline(false),
must_emit_line_directive(false), act_pos(ctx_.get_main_pos()),
whitespace(boost::wave::need_insert_whitespace(ctx.get_language()))
{
act_pos.set_file(pos_.get_file());
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
ctx_.set_current_filename(pos_.get_file().c_str());
#endif
iter_ctx->emitted_lines = (unsigned int)(-1); // force #line directive
}
// get the next preprocessed token
result_type const &operator()();
// get the last recognized token (for error processing etc.)
result_type const ¤t_token() const { return act_token; }
protected:
friend class pp_iterator<ContextT>;
bool on_include_helper(char const *t, char const *s, bool is_system,
bool include_next);
protected:
result_type const &get_next_token();
result_type const &pp_token();
template <typename IteratorT>
bool extract_identifier(IteratorT &it);
template <typename IteratorT>
bool ensure_is_last_on_line(IteratorT& it, bool call_hook = true);
template <typename IteratorT>
bool skip_to_eol_with_check(IteratorT &it, bool call_hook = true);
bool pp_directive();
template <typename IteratorT>
bool handle_pp_directive(IteratorT &it);
bool dispatch_directive(tree_parse_info_type const &hit,
result_type const& found_directive,
token_sequence_type const& found_eoltokens);
void replace_undefined_identifiers(token_sequence_type &expanded);
void on_include(string_type const &s, bool is_system, bool include_next);
void on_include(typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end, bool include_next);
void on_define(parse_node_type const &node);
void on_undefine(lexer_type const &it);
void on_ifdef(result_type const& found_directive, lexer_type const &it);
// typename parse_tree_type::const_iterator const &end);
void on_ifndef(result_type const& found_directive, lexer_type const& it);
// typename parse_tree_type::const_iterator const &end);
void on_else();
void on_endif();
void on_illformed(typename result_type::string_type s);
void on_line(typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end);
void on_if(result_type const& found_directive,
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end);
void on_elif(result_type const& found_directive,
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end);
void on_error(typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end);
#if BOOST_WAVE_SUPPORT_WARNING_DIRECTIVE != 0
void on_warning(typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end);
#endif
bool on_pragma(typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end);
bool emit_line_directive();
bool returned_from_include();
bool interpret_pragma(token_sequence_type const &pragma_body,
token_sequence_type &result);
private:
ContextT &ctx; // context, this iterator is associated with
boost::shared_ptr<base_iteration_context_type> iter_ctx;
bool seen_newline; // needed for recognizing begin of line
bool skipped_newline; // a newline has been skipped since last one
bool must_emit_line_directive; // must emit a line directive
result_type act_token; // current token
typename result_type::position_type &act_pos; // current fileposition (references the macromap)
token_sequence_type unput_queue; // tokens to be preprocessed again
token_sequence_type pending_queue; // tokens already preprocessed
// detect whether to insert additional whitespace in between two adjacent
// tokens, which otherwise would form a different token type, if
// re-tokenized
boost::wave::util::insert_whitespace_detection whitespace;
};
///////////////////////////////////////////////////////////////////////////////
// eof token
template <typename ContextT>
typename pp_iterator_functor<ContextT>::result_type const
pp_iterator_functor<ContextT>::eof;
///////////////////////////////////////////////////////////////////////////////
//
// returned_from_include()
//
// Tests if it is necessary to pop the include file context (eof inside
// a file was reached). If yes, it pops this context. Preprocessing will
// continue with the next outer file scope.
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline bool
pp_iterator_functor<ContextT>::returned_from_include()
{
if (iter_ctx->first == iter_ctx->last && ctx.get_iteration_depth() > 0) {
// call the include policy trace function
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
ctx.get_hooks().returning_from_include_file();
#else
ctx.get_hooks().returning_from_include_file(ctx.derived());
#endif
// restore the previous iteration context after finishing the preprocessing
// of the included file
BOOST_WAVE_STRINGTYPE oldfile = iter_ctx->real_filename;
position_type old_pos (act_pos);
// if this file has include guards handle it as if it had a #pragma once
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
if (need_include_guard_detection(ctx.get_language())) {
std::string guard_name;
if (iter_ctx->first.has_include_guards(guard_name))
ctx.add_pragma_once_header(ctx.get_current_filename(), guard_name);
}
#endif
iter_ctx = ctx.pop_iteration_context();
must_emit_line_directive = true;
iter_ctx->emitted_lines = (unsigned int)(-1); // force #line directive
seen_newline = true;
// restore current file position
act_pos.set_file(iter_ctx->filename);
act_pos.set_line(iter_ctx->line);
act_pos.set_column(0);
// restore the actual current file and directory
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
namespace fs = boost::filesystem;
fs::path rfp(wave::util::create_path(iter_ctx->real_filename.c_str()));
std::string real_filename(rfp.string());
ctx.set_current_filename(real_filename.c_str());
#endif
ctx.set_current_directory(iter_ctx->real_filename.c_str());
ctx.set_current_relative_filename(iter_ctx->real_relative_filename.c_str());
// ensure the integrity of the #if/#endif stack
// report unbalanced #if/#endif now to make it possible to recover properly
if (iter_ctx->if_block_depth != ctx.get_if_block_depth()) {
using boost::wave::util::impl::escape_lit;
BOOST_WAVE_STRINGTYPE msg(escape_lit(oldfile));
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, unbalanced_if_endif,
msg.c_str(), old_pos);
}
return true;
}
return false;
}
///////////////////////////////////////////////////////////////////////////////
//
// operator()(): get the next preprocessed token
//
// throws a preprocess_exception, if appropriate
//
///////////////////////////////////////////////////////////////////////////////
namespace impl {
// It may be necessary to emit a #line directive either
// - when comments need to be preserved: if the current token is not a
// whitespace, except comments
// - when comments are to be skipped: if the current token is not a
// whitespace token.
template <typename ContextT>
bool consider_emitting_line_directive(ContextT const& ctx, token_id id)
{
if (need_preserve_comments(ctx.get_language()))
{
if (!IS_CATEGORY(id, EOLTokenType) && !IS_CATEGORY(id, EOFTokenType))
{
return true;
}
}
if (!IS_CATEGORY(id, WhiteSpaceTokenType) &&
!IS_CATEGORY(id, EOLTokenType) && !IS_CATEGORY(id, EOFTokenType))
{
return true;
}
return false;
}
}
template <typename ContextT>
inline typename pp_iterator_functor<ContextT>::result_type const &
pp_iterator_functor<ContextT>::operator()()
{
using namespace boost::wave;
// make sure the cwd has been initialized
ctx.init_context();
// loop over skip able whitespace until something significant is found
bool was_seen_newline = seen_newline;
bool was_skipped_newline = skipped_newline;
token_id id = T_UNKNOWN;
try { // catch lexer exceptions
do {
if (skipped_newline) {
was_skipped_newline = true;
skipped_newline = false;
}
// get_next_token assigns result to act_token member
get_next_token();
// if comments shouldn't be preserved replace them with newlines
id = token_id(act_token);
if (!need_preserve_comments(ctx.get_language()) &&
(T_CPPCOMMENT == id || context_policies::util::ccomment_has_newline(act_token)))
{
act_token.set_token_id(id = T_NEWLINE);
act_token.set_value("\n");
}
if (IS_CATEGORY(id, EOLTokenType))
seen_newline = true;
} while (ctx.get_hooks().may_skip_whitespace(ctx.derived(), act_token, skipped_newline));
}
catch (boost::wave::cpplexer::lexing_exception const& e) {
// dispatch any lexer exceptions to the context hook function
ctx.get_hooks().throw_exception(ctx.derived(), e);
return act_token;
}
// restore the accumulated skipped_newline state for next invocation
if (was_skipped_newline)
skipped_newline = true;
// if there were skipped any newlines, we must emit a #line directive
if ((must_emit_line_directive || (was_seen_newline && skipped_newline)) &&
impl::consider_emitting_line_directive(ctx, id))
{
// must emit a #line directive
if (need_emit_line_directives(ctx.get_language()) && emit_line_directive())
{
skipped_newline = false;
ctx.get_hooks().may_skip_whitespace(ctx.derived(), act_token, skipped_newline); // feed ws eater FSM
id = token_id(act_token);
}
}
// cleanup of certain tokens required
seen_newline = false;
switch (static_cast<unsigned int>(id)) {
case T_NONREPLACABLE_IDENTIFIER:
act_token.set_token_id(id = T_IDENTIFIER);
break;
case T_GENERATEDNEWLINE: // was generated by emit_line_directive()
act_token.set_token_id(id = T_NEWLINE);
++iter_ctx->emitted_lines;
seen_newline = true;
break;
case T_NEWLINE:
case T_CPPCOMMENT:
seen_newline = true;
++iter_ctx->emitted_lines;
break;
#if BOOST_WAVE_SUPPORT_CPP0X != 0
case T_RAWSTRINGLIT:
iter_ctx->emitted_lines +=
context_policies::util::rawstring_count_newlines(act_token);
break;
#endif
case T_CCOMMENT: // will come here only if whitespace is preserved
iter_ctx->emitted_lines +=
context_policies::util::ccomment_count_newlines(act_token);
break;
case T_PP_NUMBER: // re-tokenize the pp-number
{
token_sequence_type rescanned;
std::string pp_number(
util::to_string<std::string>(act_token.get_value()));
lexer_type it = lexer_type(pp_number.begin(),
pp_number.end(), act_token.get_position(),
ctx.get_language());
lexer_type end = lexer_type();
for (/**/; it != end && T_EOF != token_id(*it); ++it)
rescanned.push_back(*it);
pending_queue.splice(pending_queue.begin(), rescanned);
act_token = pending_queue.front();
id = token_id(act_token);
pending_queue.pop_front();
}
break;
case T_EOF:
seen_newline = true;
break;
default: // make sure whitespace at line begin keeps seen_newline status
if (IS_CATEGORY(id, WhiteSpaceTokenType))
seen_newline = was_seen_newline;
break;
}
if (whitespace.must_insert(id, act_token.get_value())) {
// must insert some whitespace into the output stream to avoid adjacent
// tokens, which would form different (and wrong) tokens
whitespace.shift_tokens(T_SPACE);
pending_queue.push_front(act_token); // push this token back
return act_token = result_type(T_SPACE,
typename result_type::string_type(" "),
act_token.get_position());
}
whitespace.shift_tokens(id);
return ctx.get_hooks().generated_token(ctx.derived(), act_token);
}
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline typename pp_iterator_functor<ContextT>::result_type const &
pp_iterator_functor<ContextT>::get_next_token()
{
using namespace boost::wave;
// if there is something in the unput_queue, then return the next token from
// there (all tokens in the queue are preprocessed already)
if (!pending_queue.empty() || !unput_queue.empty())
return pp_token(); // return next token
// test for EOF, if there is a pending input context, pop it back and continue
// parsing with it
bool returned_from_include_file = returned_from_include();
// try to generate the next token
if (iter_ctx->first != iter_ctx->last) {
do {
// If there are pending tokens in the queue, we'll have to return
// these. This may happen from a #pragma directive, which got replaced
// by some token sequence.
if (!pending_queue.empty()) {
util::on_exit::pop_front<token_sequence_type>
pop_front_token(pending_queue);
return act_token = pending_queue.front();
}
// adjust the current position (line and column)
bool was_seen_newline = seen_newline || returned_from_include_file;
// fetch the current token
act_token = *iter_ctx->first;
act_pos = act_token.get_position();
// act accordingly on the current token
token_id id = token_id(act_token);
if (T_EOF == id) {
// returned from an include file, continue with the next token
whitespace.shift_tokens(T_EOF);
++iter_ctx->first;
// now make sure this line has a newline
if ((!seen_newline || act_pos.get_column() > 1) &&
!need_single_line(ctx.get_language()))
{
// warn, if this file does not end with a newline
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
last_line_not_terminated, "", act_pos);
}
continue; // if this is the main file, the while loop breaks
}
else if (T_NEWLINE == id || T_CPPCOMMENT == id) {
// a newline is to be returned ASAP, a C++ comment too
// (the C++ comment token includes the trailing newline)
seen_newline = true;
++iter_ctx->first;
if (!ctx.get_if_block_status()) {
// skip this token because of the disabled #if block
whitespace.shift_tokens(id); // whitespace controller
util::impl::call_skipped_token_hook(ctx, act_token);
continue;
}
return act_token;
}
seen_newline = false;
if (was_seen_newline && pp_directive()) {
// a pp directive was found
// pending_queue.push_back(result_type(T_NEWLINE, "\n", act_pos));
// seen_newline = true;
// must_emit_line_directive = true;
// loop to the next token to analyze
// simply fall through, since the iterator was already adjusted
// correctly
}
else if (ctx.get_if_block_status()) {
// preprocess this token, eat up more, if appropriate, return
// the next preprocessed token
return pp_token();
}
else {
// compilation condition is false: if the current token is a
// newline, account for it, otherwise discard the actual token and
// try the next one
if (T_NEWLINE == token_id(act_token)) {
seen_newline = true;
must_emit_line_directive = true;
}
// next token
util::impl::call_skipped_token_hook(ctx, act_token);
++iter_ctx->first;
}
} while ((iter_ctx->first != iter_ctx->last) ||
(returned_from_include_file = returned_from_include()));
// overall eof reached
if (ctx.get_if_block_depth() > 0 && !need_single_line(ctx.get_language()))
{
// missing endif directive(s)
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
missing_matching_endif, "", act_pos);
}
}
else {
act_token = eof; // this is the last token
}
// whitespace.shift_tokens(T_EOF); // whitespace controller
return act_token; // return eof token
}
///////////////////////////////////////////////////////////////////////////////
//
// emit_line_directive(): emits a line directive from the act_token data
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline bool
pp_iterator_functor<ContextT>::emit_line_directive()
{
using namespace boost::wave;
typename ContextT::position_type pos = act_token.get_position();
// if (must_emit_line_directive &&
// iter_ctx->emitted_lines+1 == act_pos.get_line() &&
// iter_ctx->filename == act_pos.get_file())
// {
// must_emit_line_directive = false;
// return false;
// }
if (must_emit_line_directive ||
iter_ctx->emitted_lines+1 != act_pos.get_line())
{
// unput the current token
pending_queue.push_front(act_token);
pos.set_line(act_pos.get_line());
if (iter_ctx->emitted_lines+2 == act_pos.get_line() && act_pos.get_line() != 1) {
// prefer to output a single newline instead of the #line directive
// whitespace.shift_tokens(T_NEWLINE);
act_token = result_type(T_NEWLINE, "\n", pos);
}
else {
// account for the newline emitted here
act_pos.set_line(act_pos.get_line()-1);
iter_ctx->emitted_lines = act_pos.get_line()-1;
token_sequence_type pending;
if (!ctx.get_hooks().emit_line_directive(ctx, pending, act_token))
{
unsigned int column = 6;
// the hook did not generate anything, emit default #line
pos.set_column(1);
pending.push_back(result_type(T_PP_LINE, "#line", pos));
pos.set_column(column); // account for '#line'
pending.push_back(result_type(T_SPACE, " ", pos));
// 21 is the max required size for a 64 bit integer represented as a
// string
char buffer[22];
using namespace std; // for some systems sprintf is in namespace std
sprintf (buffer, "%ld", pos.get_line());
pos.set_column(++column); // account for ' '
pending.push_back(result_type(T_INTLIT, buffer, pos));
pos.set_column(column += (unsigned int)strlen(buffer)); // account for <number>
pending.push_back(result_type(T_SPACE, " ", pos));
pos.set_column(++column); // account for ' '
std::string file("\"");
boost::filesystem::path filename(
wave::util::create_path(act_pos.get_file().c_str()));
using wave::util::impl::escape_lit;
file += escape_lit(wave::util::native_file_string(filename)) + "\"";
pending.push_back(result_type(T_STRINGLIT, file.c_str(), pos));
pos.set_column(column += (unsigned int)file.size()); // account for filename
pending.push_back(result_type(T_GENERATEDNEWLINE, "\n", pos));
}
// if there is some replacement text, insert it into the pending queue
if (!pending.empty()) {
pending_queue.splice(pending_queue.begin(), pending);
act_token = pending_queue.front();
pending_queue.pop_front();
}
}
must_emit_line_directive = false; // we are now in sync
return true;
}
must_emit_line_directive = false; // we are now in sync
return false;
}
///////////////////////////////////////////////////////////////////////////////
//
// pptoken(): return the next preprocessed token
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline typename pp_iterator_functor<ContextT>::result_type const &
pp_iterator_functor<ContextT>::pp_token()
{
using namespace boost::wave;
token_id id = token_id(*iter_ctx->first);
// eat all T_PLACEHOLDER tokens, eventually slipped through out of the
// macro engine
do {
if (!pending_queue.empty()) {
// if there are pending tokens in the queue, return the first one
act_token = pending_queue.front();
pending_queue.pop_front();
act_pos = act_token.get_position();
}
else if (!unput_queue.empty()
|| T_IDENTIFIER == id
|| IS_CATEGORY(id, KeywordTokenType)
|| IS_EXTCATEGORY(id, OperatorTokenType|AltExtTokenType)
|| IS_CATEGORY(id, BoolLiteralTokenType))
{
// call the lexer, preprocess the required number of tokens, put them
// into the unput queue
act_token = ctx.expand_tokensequence(iter_ctx->first,
iter_ctx->last, pending_queue, unput_queue, skipped_newline);
}
else {
// simply return the next token
act_token = *iter_ctx->first;
++iter_ctx->first;
}
id = token_id(act_token);
} while (T_PLACEHOLDER == id);
return act_token;
}
///////////////////////////////////////////////////////////////////////////////
//
// pp_directive(): recognize a preprocessor directive
//
///////////////////////////////////////////////////////////////////////////////
namespace impl {
// call 'found_directive' preprocessing hook
template <typename ContextT>
bool call_found_directive_hook(ContextT& ctx,
typename ContextT::token_type const& found_directive)
{
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
ctx.get_hooks().found_directive(found_directive);
#else
if (ctx.get_hooks().found_directive(ctx.derived(), found_directive))
return true; // skip this directive and return newline only
#endif
return false;
}
// // call 'skipped_token' preprocessing hook
// template <typename ContextT>
// void call_skipped_token_hook(ContextT& ctx,
// typename ContextT::token_type const& skipped)
// {
// #if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
// ctx.get_hooks().skipped_token(skipped);
// #else
// ctx.get_hooks().skipped_token(ctx.derived(), skipped);
// #endif
// }
template <typename ContextT, typename IteratorT>
bool next_token_is_pp_directive(ContextT &ctx, IteratorT &it, IteratorT const &end)
{
using namespace boost::wave;
token_id id = T_UNKNOWN;
for (/**/; it != end; ++it) {
id = token_id(*it);
if (!IS_CATEGORY(id, WhiteSpaceTokenType))
break; // skip leading whitespace
if (IS_CATEGORY(id, EOLTokenType) || IS_CATEGORY(id, EOFTokenType))
break; // do not enter a new line
if (T_CPPCOMMENT == id ||
context_policies::util::ccomment_has_newline(*it))
{
break;
}
// this token gets skipped
util::impl::call_skipped_token_hook(ctx, *it);
}
BOOST_ASSERT(it == end || id != T_UNKNOWN);
return it != end && IS_CATEGORY(id, PPTokenType);
}
// verify that there isn't anything significant left on the line
template <typename ContextT, typename IteratorT>
bool pp_is_last_on_line(ContextT &ctx, IteratorT &it, IteratorT const &end,
bool call_hook = true)
{
using namespace boost::wave;
// this token gets skipped
if (call_hook)
util::impl::call_skipped_token_hook(ctx, *it);
for (++it; it != end; ++it) {
token_id id = token_id(*it);
if (T_CPPCOMMENT == id || T_NEWLINE == id ||
context_policies::util::ccomment_has_newline(*it))
{
if (call_hook)
util::impl::call_skipped_token_hook(ctx, *it);
++it; // skip eol/C/C++ comment
return true; // no more significant tokens on this line
}
if (!IS_CATEGORY(id, WhiteSpaceTokenType))
break;
// this token gets skipped
if (call_hook)
util::impl::call_skipped_token_hook(ctx, *it);
}
return false;
}
///////////////////////////////////////////////////////////////////////////
template <typename ContextT, typename IteratorT>
bool skip_to_eol(ContextT &ctx, IteratorT &it, IteratorT const &end,
bool call_hook = true)
{
using namespace boost::wave;
for (/**/; it != end; ++it) {
token_id id = token_id(*it);
if (T_CPPCOMMENT == id || T_NEWLINE == id ||
context_policies::util::ccomment_has_newline(*it))
{
// always call hook for eol
util::impl::call_skipped_token_hook(ctx, *it);
++it; // skip eol/C/C++ comment
return true; // found eol
}
if (call_hook)
util::impl::call_skipped_token_hook(ctx, *it);
}
return false;
}
///////////////////////////////////////////////////////////////////////////
template <typename ContextT, typename ContainerT>
inline void
remove_leading_whitespace(ContextT &ctx, ContainerT& c, bool call_hook = true)
{
typename ContainerT::iterator it = c.begin();
while (IS_CATEGORY(*it, WhiteSpaceTokenType)) {
typename ContainerT::iterator save = it++;
if (call_hook)
util::impl::call_skipped_token_hook(ctx, *save);
c.erase(save);
}
}
}
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
template <typename IteratorT>
inline bool
pp_iterator_functor<ContextT>::extract_identifier(IteratorT &it)
{
token_id id = util::impl::skip_whitespace(it, iter_ctx->last);
if (T_IDENTIFIER == id || IS_CATEGORY(id, KeywordTokenType) ||
IS_EXTCATEGORY(id, OperatorTokenType|AltExtTokenType) ||
IS_CATEGORY(id, BoolLiteralTokenType))
{
IteratorT save = it;
if (impl::pp_is_last_on_line(ctx, save, iter_ctx->last, false))
return true;
}
// report the ill formed directive
impl::skip_to_eol(ctx, it, iter_ctx->last);
string_type str(util::impl::as_string<string_type>(iter_ctx->first, it));
seen_newline = true;
iter_ctx->first = it;
on_illformed(str);
return false;
}
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
template <typename IteratorT>
inline bool
pp_iterator_functor<ContextT>::ensure_is_last_on_line(IteratorT& it, bool call_hook)
{
if (!impl::pp_is_last_on_line(ctx, it, iter_ctx->last, call_hook))
{
// enable error recovery (start over with the next line)
impl::skip_to_eol(ctx, it, iter_ctx->last);
string_type str(util::impl::as_string<string_type>(
iter_ctx->first, it));
seen_newline = true;
iter_ctx->first = it;
// report an invalid directive
on_illformed(str);
return false;
}
if (it == iter_ctx->last && !need_single_line(ctx.get_language()))
{
// The line doesn't end with an eol but eof token.
seen_newline = true; // allow to resume after warning
iter_ctx->first = it;
// Trigger a warning that the last line was not terminated with a
// newline.
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
last_line_not_terminated, "", act_pos);
return false;
}
return true;
}
template <typename ContextT>
template <typename IteratorT>
inline bool
pp_iterator_functor<ContextT>::skip_to_eol_with_check(IteratorT &it, bool call_hook)
{
typename ContextT::string_type value ((*it).get_value());
if (!impl::skip_to_eol(ctx, it, iter_ctx->last, call_hook) &&
!need_single_line(ctx.get_language()))
{
// The line doesn't end with an eol but eof token.
seen_newline = true; // allow to resume after warning
iter_ctx->first = it;
// Trigger a warning, that the last line was not terminated with a
// newline.
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
last_line_not_terminated, "", act_pos);
return false;
}
// normal line ending reached, adjust iterator and flag
seen_newline = true;
iter_ctx->first = it;
return true;
}
///////////////////////////////////////////////////////////////////////////////
// handle_pp_directive: handle certain pp_directives
template <typename ContextT>
template <typename IteratorT>
inline bool
pp_iterator_functor<ContextT>::handle_pp_directive(IteratorT &it)
{
token_id id = token_id(*it);
bool can_exit = true;
bool call_hook_in_skip = true;
if (!ctx.get_if_block_status()) {
if (IS_EXTCATEGORY(*it, PPConditionalTokenType)) {
// simulate the if block hierarchy
switch (static_cast<unsigned int>(id)) {
case T_PP_IFDEF: // #ifdef
case T_PP_IFNDEF: // #ifndef
case T_PP_IF: // #if
ctx.enter_if_block(false);
break;
case T_PP_ELIF: // #elif
if (!ctx.get_enclosing_if_block_status()) {
if (!ctx.enter_elif_block(false)) {
// #else without matching #if
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
missing_matching_if, "#elif", act_pos);
return true; // do not analyze this directive any further
}
}
else {
can_exit = false; // #elif is not always safe to skip
}
break;
case T_PP_ELSE: // #else
case T_PP_ENDIF: // #endif
{
// handle this directive
if (T_PP_ELSE == token_id(*it))
on_else();
else
on_endif();
// make sure, there are no (non-whitespace) tokens left on
// this line
ensure_is_last_on_line(it);
// we skipped to the end of this line already
seen_newline = true;
iter_ctx->first = it;
}
return true;
default: // #something else
on_illformed((*it).get_value());
break;
}
}
else {
util::impl::call_skipped_token_hook(ctx, *it);
++it;
}
}
else {
// try to handle the simple pp directives without parsing
result_type directive = *it;
bool include_next = false;
switch (static_cast<unsigned int>(id)) {
case T_PP_QHEADER: // #include "..."
#if BOOST_WAVE_SUPPORT_INCLUDE_NEXT != 0
case T_PP_QHEADER_NEXT:
#endif
include_next = (T_PP_QHEADER_NEXT == id) ? true : false;
if (!impl::call_found_directive_hook(ctx, *it))
{
string_type dir((*it).get_value());
// make sure, there are no (non-whitespace) tokens left on
// this line
if (ensure_is_last_on_line(it))
{
seen_newline = true;
iter_ctx->first = it;
on_include (dir, false, include_next);
}
return true;
}
break;
case T_PP_HHEADER: // #include <...>
#if BOOST_WAVE_SUPPORT_INCLUDE_NEXT != 0
case T_PP_HHEADER_NEXT:
#endif
include_next = (T_PP_HHEADER_NEXT == id) ? true : false;
if (!impl::call_found_directive_hook(ctx, *it))
{
string_type dir((*it).get_value());
// make sure, there are no (non-whitespace) tokens left on
// this line
if (ensure_is_last_on_line(it))
{
seen_newline = true;
iter_ctx->first = it;
on_include (dir, true, include_next);
}
return true;
}
break;
case T_PP_ELSE: // #else
case T_PP_ENDIF: // #endif
if (!impl::call_found_directive_hook(ctx, *it))
{
// handle this directive
if (T_PP_ELSE == token_id(*it))
on_else();
else
on_endif();
// make sure, there are no (non-whitespace) tokens left on
// this line
ensure_is_last_on_line(it);
// we skipped to the end of this line already
seen_newline = true;
iter_ctx->first = it;
return true;
}
break;
// extract everything on this line as arguments
// case T_PP_IF: // #if
// case T_PP_ELIF: // #elif
// case T_PP_ERROR: // #error
// case T_PP_WARNING: // #warning
// case T_PP_PRAGMA: // #pragma
// case T_PP_LINE: // #line
// break;
// extract first non-whitespace token as argument
case T_PP_UNDEF: // #undef
if (!impl::call_found_directive_hook(ctx, *it) &&
extract_identifier(it))
{
on_undefine(it);
}
call_hook_in_skip = false;
break;
case T_PP_IFDEF: // #ifdef
if (!impl::call_found_directive_hook(ctx, *it) &&
extract_identifier(it))
{
on_ifdef(directive, it);
}
call_hook_in_skip = false;
break;
case T_PP_IFNDEF: // #ifndef
if (!impl::call_found_directive_hook(ctx, *it) &&
extract_identifier(it))
{
on_ifndef(directive, it);
}
call_hook_in_skip = false;
break;
#if BOOST_WAVE_SUPPORT_MS_EXTENSIONS != 0
// case T_MSEXT_PP_REGION: // #region ...
// break;
//
// case T_MSEXT_PP_ENDREGION: // #endregion
// break;
#endif
default:
can_exit = false;
break;
}
}
// start over with the next line, if only possible
if (can_exit) {
skip_to_eol_with_check(it, call_hook_in_skip);
return true; // may be safely ignored
}
return false; // do not ignore this pp directive
}
///////////////////////////////////////////////////////////////////////////////
// pp_directive(): recognize a preprocessor directive
template <typename ContextT>
inline bool
pp_iterator_functor<ContextT>::pp_directive()
{
using namespace cpplexer;
// test, if the next non-whitespace token is a pp directive
lexer_type it = iter_ctx->first;
if (!impl::next_token_is_pp_directive(ctx, it, iter_ctx->last)) {
// skip null pp directive (no need to do it via the parser)
if (it != iter_ctx->last && T_POUND == BASE_TOKEN(token_id(*it))) {
if (impl::pp_is_last_on_line(ctx, it, iter_ctx->last)) {
// start over with the next line
seen_newline = true;
iter_ctx->first = it;
return true;
}
else if (ctx.get_if_block_status()) {
// report invalid pp directive
impl::skip_to_eol(ctx, it, iter_ctx->last);
seen_newline = true;
string_type str(boost::wave::util::impl::as_string<string_type>(
iter_ctx->first, it));
token_sequence_type faulty_line;
for (/**/; iter_ctx->first != it; ++iter_ctx->first)
faulty_line.push_back(*iter_ctx->first);
token_sequence_type pending;
if (ctx.get_hooks().found_unknown_directive(ctx, faulty_line, pending))
{
// if there is some replacement text, insert it into the pending queue
if (!pending.empty())
pending_queue.splice(pending_queue.begin(), pending);
return true;
}
// default behavior is to throw an exception
on_illformed(str);
}
}
// this line does not contain a pp directive, so simply return
return false;
}
// found eof
if (it == iter_ctx->last)
return false;
// ignore/handle all pp directives not related to conditional compilation while
// if block status is false
if (handle_pp_directive(it)) {
// we may skip pp directives only if the current if block status is
// false or if it was a #include directive we could handle directly
return true; // the pp directive has been handled/skipped
}
// found a pp directive, so try to identify it, start with the pp_token
bool found_eof = false;
result_type found_directive;
token_sequence_type found_eoltokens;
tree_parse_info_type hit = cpp_grammar_type::parse_cpp_grammar(
it, iter_ctx->last, act_pos, found_eof, found_directive, found_eoltokens);
if (hit.match) {
// position the iterator past the matched sequence to allow
// resynchronization, if an error occurs
iter_ctx->first = hit.stop;
seen_newline = true;
must_emit_line_directive = true;
// found a valid pp directive, dispatch to the correct function to handle
// the found pp directive
bool result = dispatch_directive (hit, found_directive, found_eoltokens);
if (found_eof && !need_single_line(ctx.get_language())) {
// The line was terminated with an end of file token.
// So trigger a warning, that the last line was not terminated with a
// newline.
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
last_line_not_terminated, "", act_pos);
}
return result;
}
else if (token_id(found_directive) != T_EOF) {
// recognized invalid directive
impl::skip_to_eol(ctx, it, iter_ctx->last);
seen_newline = true;
string_type str(boost::wave::util::impl::as_string<string_type>(
iter_ctx->first, it));
iter_ctx->first = it;
// report the ill formed directive
on_illformed(str);
}
return false;
}
///////////////////////////////////////////////////////////////////////////////
//
// dispatch_directive(): dispatch a recognized preprocessor directive
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline bool
pp_iterator_functor<ContextT>::dispatch_directive(
tree_parse_info_type const &hit, result_type const& found_directive,
token_sequence_type const& found_eoltokens)
{
using namespace cpplexer;
typedef typename parse_tree_type::const_iterator const_child_iterator_t;
// this iterator points to the root node of the parse tree
const_child_iterator_t begin = hit.trees.begin();
// decide, which preprocessor directive was found
parse_tree_type const &root = (*begin).children;
parse_node_value_type const &nodeval = get_first_leaf(*root.begin()).value;
//long node_id = nodeval.id().to_long();
const_child_iterator_t begin_child_it = (*root.begin()).children.begin();
const_child_iterator_t end_child_it = (*root.begin()).children.end();
token_id id = token_id(found_directive);
// call preprocessing hook
if (impl::call_found_directive_hook(ctx, found_directive))
return true; // skip this directive and return newline only
switch (static_cast<unsigned int>(id)) {
// case T_PP_QHEADER: // #include "..."
// #if BOOST_WAVE_SUPPORT_INCLUDE_NEXT != 0
// case T_PP_QHEADER_NEXT: // #include_next "..."
// #endif
// on_include ((*nodeval.begin()).get_value(), false,
// T_PP_QHEADER_NEXT == id);
// break;
// case T_PP_HHEADER: // #include <...>
// #if BOOST_WAVE_SUPPORT_INCLUDE_NEXT != 0
// case T_PP_HHEADER_NEXT: // #include_next <...>
// #endif
// on_include ((*nodeval.begin()).get_value(), true,
// T_PP_HHEADER_NEXT == id);
// break;
case T_PP_INCLUDE: // #include ...
#if BOOST_WAVE_SUPPORT_INCLUDE_NEXT != 0
case T_PP_INCLUDE_NEXT: // #include_next ...
#endif
on_include (begin_child_it, end_child_it, T_PP_INCLUDE_NEXT == id);
break;
case T_PP_DEFINE: // #define
on_define (*begin);
break;
// case T_PP_UNDEF: // #undef
// on_undefine(*nodeval.begin());
// break;
//
// case T_PP_IFDEF: // #ifdef
// on_ifdef(found_directive, begin_child_it, end_child_it);
// break;
//
// case T_PP_IFNDEF: // #ifndef
// on_ifndef(found_directive, begin_child_it, end_child_it);
// break;
case T_PP_IF: // #if
on_if(found_directive, begin_child_it, end_child_it);
break;
case T_PP_ELIF: // #elif
on_elif(found_directive, begin_child_it, end_child_it);
break;
// case T_PP_ELSE: // #else
// on_else();
// break;
// case T_PP_ENDIF: // #endif
// on_endif();
// break;
case T_PP_LINE: // #line
on_line(begin_child_it, end_child_it);
break;
case T_PP_ERROR: // #error
on_error(begin_child_it, end_child_it);
break;
#if BOOST_WAVE_SUPPORT_WARNING_DIRECTIVE != 0
case T_PP_WARNING: // #warning
on_warning(begin_child_it, end_child_it);
break;
#endif
case T_PP_PRAGMA: // #pragma
return on_pragma(begin_child_it, end_child_it);
#if BOOST_WAVE_SUPPORT_MS_EXTENSIONS != 0
case T_MSEXT_PP_REGION:
case T_MSEXT_PP_ENDREGION:
break; // ignore these
#endif
default: // #something else
on_illformed((*nodeval.begin()).get_value());
// if we end up here, we have been instructed to ignore the error, so
// we simply copy the whole construct to the output
{
token_sequence_type expanded;
get_token_value<result_type, parse_node_type> get_value;
std::copy(make_ref_transform_iterator(begin_child_it, get_value),
make_ref_transform_iterator(end_child_it, get_value),
std::inserter(expanded, expanded.end()));
pending_queue.splice(pending_queue.begin(), expanded);
}
break;
}
// properly skip trailing newline for all directives
typename token_sequence_type::const_iterator eol = found_eoltokens.begin();
impl::skip_to_eol(ctx, eol, found_eoltokens.end());
return true; // return newline only
}
///////////////////////////////////////////////////////////////////////////////
//
// on_include: handle #include <...> or #include "..." directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_include (string_type const &s,
bool is_system, bool include_next)
{
BOOST_ASSERT(ctx.get_if_block_status());
// strip quotes first, extract filename
typename string_type::size_type pos_end = s.find_last_of(is_system ? '>' : '\"');
if (string_type::npos == pos_end) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, bad_include_statement,
s.c_str(), act_pos);
return;
}
typename string_type::size_type pos_begin =
s.find_last_of(is_system ? '<' : '\"', pos_end-1);
if (string_type::npos == pos_begin) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, bad_include_statement,
s.c_str(), act_pos);
return;
}
std::string file_token(s.substr(pos_begin, pos_end-pos_begin+1).c_str());
std::string file_path(s.substr(pos_begin+1, pos_end-pos_begin-1).c_str());
// finally include the file
on_include_helper(file_token.c_str(), file_path.c_str(), is_system,
include_next);
}
template <typename ContextT>
inline bool
pp_iterator_functor<ContextT>::on_include_helper (char const *f, char const *s,
bool is_system, bool include_next)
{
namespace fs = boost::filesystem;
// try to locate the given file, searching through the include path lists
std::string file_path(s);
std::string dir_path;
#if BOOST_WAVE_SUPPORT_INCLUDE_NEXT != 0
char const *current_name = include_next ? iter_ctx->real_filename.c_str() : 0;
#else
char const *current_name = 0; // never try to match current file name
#endif
// call the 'found_include_directive' hook function
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
ctx.get_hooks().found_include_directive(f, include_next);
#else
if (ctx.get_hooks().found_include_directive(ctx.derived(), f, include_next))
return true; // client returned false: skip file to include
#endif
file_path = util::impl::unescape_lit(file_path);
std::string native_path_str;
if (!ctx.get_hooks().locate_include_file(ctx, file_path, is_system,
current_name, dir_path, native_path_str))
{
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, bad_include_file,
file_path.c_str(), act_pos);
return false;
}
// test, if this file is known through a #pragma once directive
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
if (!ctx.has_pragma_once(native_path_str))
#endif
{
// the new include file determines the actual current directory
ctx.set_current_directory(native_path_str.c_str());
// preprocess the opened file
boost::shared_ptr<base_iteration_context_type> new_iter_ctx (
new iteration_context_type(ctx, native_path_str.c_str(), act_pos,
boost::wave::enable_prefer_pp_numbers(ctx.get_language()),
is_system ? base_iteration_context_type::system_header :
base_iteration_context_type::user_header));
// call the include policy trace function
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
ctx.get_hooks().opened_include_file(dir_path, file_path,
ctx.get_iteration_depth(), is_system);
#else
ctx.get_hooks().opened_include_file(ctx.derived(), dir_path, file_path,
is_system);
#endif
// store current file position
iter_ctx->real_relative_filename = ctx.get_current_relative_filename().c_str();
iter_ctx->filename = act_pos.get_file();
iter_ctx->line = act_pos.get_line();
iter_ctx->if_block_depth = ctx.get_if_block_depth();
iter_ctx->emitted_lines = (unsigned int)(-1); // force #line directive
// push the old iteration context onto the stack and continue with the new
ctx.push_iteration_context(act_pos, iter_ctx);
iter_ctx = new_iter_ctx;
seen_newline = true; // fake a newline to trigger pp_directive
must_emit_line_directive = true;
act_pos.set_file(iter_ctx->filename); // initialize file position
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
fs::path rfp(wave::util::create_path(iter_ctx->real_filename.c_str()));
std::string real_filename(rfp.string());
ctx.set_current_filename(real_filename.c_str());
#endif
ctx.set_current_relative_filename(dir_path.c_str());
iter_ctx->real_relative_filename = dir_path.c_str();
act_pos.set_line(iter_ctx->line);
act_pos.set_column(0);
}
return true;
}
///////////////////////////////////////////////////////////////////////////////
//
// on_include(): handle #include ... directives
//
///////////////////////////////////////////////////////////////////////////////
namespace impl {
// trim all whitespace from the beginning and the end of the given string
template <typename StringT>
inline StringT
trim_whitespace(StringT const &s)
{
typedef typename StringT::size_type size_type;
size_type first = s.find_first_not_of(" \t\v\f");
if (StringT::npos == first)
return StringT();
size_type last = s.find_last_not_of(" \t\v\f");
return s.substr(first, last-first+1);
}
}
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_include(
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end, bool include_next)
{
BOOST_ASSERT(ctx.get_if_block_status());
// preprocess the given token sequence (the body of the #include directive)
get_token_value<result_type, parse_node_type> get_value;
token_sequence_type expanded;
token_sequence_type toexpand;
std::copy(make_ref_transform_iterator(begin, get_value),
make_ref_transform_iterator(end, get_value),
std::inserter(toexpand, toexpand.end()));
typename token_sequence_type::iterator begin2 = toexpand.begin();
ctx.expand_whole_tokensequence(begin2, toexpand.end(), expanded,
false);
// now, include the file
string_type s (impl::trim_whitespace(boost::wave::util::impl::as_string(expanded)));
bool is_system = '<' == s[0] && '>' == s[s.size()-1];
if (!is_system && !('\"' == s[0] && '\"' == s[s.size()-1])) {
// should resolve into something like <...> or "..."
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, bad_include_statement,
s.c_str(), act_pos);
return;
}
on_include(s, is_system, include_next);
}
///////////////////////////////////////////////////////////////////////////////
//
// on_define(): handle #define directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_define (parse_node_type const &node)
{
BOOST_ASSERT(ctx.get_if_block_status());
// retrieve the macro definition from the parse tree
result_type macroname;
std::vector<result_type> macroparameters;
token_sequence_type macrodefinition;
bool has_parameters = false;
position_type pos(act_token.get_position());
if (!boost::wave::util::retrieve_macroname(ctx, node,
BOOST_WAVE_PLAIN_DEFINE_ID, macroname, pos, false))
return;
has_parameters = boost::wave::util::retrieve_macrodefinition(node,
BOOST_WAVE_MACRO_PARAMETERS_ID, macroparameters, pos, false);
boost::wave::util::retrieve_macrodefinition(node,
BOOST_WAVE_MACRO_DEFINITION_ID, macrodefinition, pos, false);
if (has_parameters) {
#if BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0
if (boost::wave::need_variadics(ctx.get_language())) {
// test whether ellipsis are given, and if yes, if these are placed as the
// last argument, test if __VA_ARGS__ is used as a macro parameter name
using namespace cpplexer;
typedef typename std::vector<result_type>::iterator
parameter_iterator_t;
bool seen_ellipses = false;
parameter_iterator_t end = macroparameters.end();
for (parameter_iterator_t pit = macroparameters.begin();
pit != end; ++pit)
{
if (seen_ellipses) {
// ellipses are not the last given formal argument
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
bad_define_statement, macroname.get_value().c_str(),
(*pit).get_position());
return;
}
if (T_ELLIPSIS == token_id(*pit))
seen_ellipses = true;
// can't use __VA_ARGS__ as a argument name
if ("__VA_ARGS__" == (*pit).get_value()) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
bad_define_statement_va_args,
macroname.get_value().c_str(), (*pit).get_position());
return;
}
}
// if there wasn't an ellipsis, then there shouldn't be a __VA_ARGS__
// placeholder in the definition too [C99 Standard 6.10.3.5]
if (!seen_ellipses) {
typedef typename token_sequence_type::iterator definition_iterator_t;
bool seen_va_args = false;
definition_iterator_t pend = macrodefinition.end();
for (definition_iterator_t dit = macrodefinition.begin();
dit != pend; ++dit)
{
if (T_IDENTIFIER == token_id(*dit) &&
"__VA_ARGS__" == (*dit).get_value())
{
seen_va_args = true;
}
}
if (seen_va_args) {
// must not have seen __VA_ARGS__ placeholder
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
bad_define_statement_va_args,
macroname.get_value().c_str(), act_token.get_position());
return;
}
}
}
else
#endif // BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0
{
// test, that there is no T_ELLIPSES given
using namespace cpplexer;
typedef typename std::vector<result_type>::iterator
parameter_iterator_t;
parameter_iterator_t end = macroparameters.end();
for (parameter_iterator_t pit = macroparameters.begin();
pit != end; ++pit)
{
if (T_ELLIPSIS == token_id(*pit)) {
// if variadics are disabled, no ellipses should be given
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
bad_define_statement, macroname.get_value().c_str(),
(*pit).get_position());
return;
}
}
}
}
// add the new macro to the macromap
ctx.add_macro_definition(macroname, has_parameters, macroparameters,
macrodefinition);
}
///////////////////////////////////////////////////////////////////////////////
//
// on_undefine(): handle #undef directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_undefine (lexer_type const &it)
{
BOOST_ASSERT(ctx.get_if_block_status());
// retrieve the macro name to undefine from the parse tree
ctx.remove_macro_definition((*it).get_value()); // throws for predefined macros
}
///////////////////////////////////////////////////////////////////////////////
//
// on_ifdef(): handle #ifdef directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_ifdef(
result_type const& found_directive, lexer_type const &it)
// typename parse_tree_type::const_iterator const &it)
// typename parse_tree_type::const_iterator const &end)
{
// get_token_value<result_type, parse_node_type> get_value;
// token_sequence_type toexpand;
//
// std::copy(make_ref_transform_iterator((*begin).children.begin(), get_value),
// make_ref_transform_iterator((*begin).children.end(), get_value),
// std::inserter(toexpand, toexpand.end()));
bool is_defined = false;
token_sequence_type directive;
directive.insert(directive.end(), *it);
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
is_defined = ctx.is_defined_macro((*it).get_value()); // toexpand.begin(), toexpand.end());
ctx.get_hooks().evaluated_conditional_expression(directive, is_defined);
#else
do {
is_defined = ctx.is_defined_macro((*it).get_value()); // toexpand.begin(), toexpand.end());
} while (ctx.get_hooks().evaluated_conditional_expression(ctx.derived(),
found_directive, directive, is_defined));
#endif
ctx.enter_if_block(is_defined);
}
///////////////////////////////////////////////////////////////////////////////
//
// on_ifndef(): handle #ifndef directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_ifndef(
result_type const& found_directive, lexer_type const &it)
// typename parse_tree_type::const_iterator const &it)
// typename parse_tree_type::const_iterator const &end)
{
// get_token_value<result_type, parse_node_type> get_value;
// token_sequence_type toexpand;
//
// std::copy(make_ref_transform_iterator((*begin).children.begin(), get_value),
// make_ref_transform_iterator((*begin).children.end(), get_value),
// std::inserter(toexpand, toexpand.end()));
bool is_defined = false;
token_sequence_type directive;
directive.insert(directive.end(), *it);
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
is_defined = ctx.is_defined_macro((*it).get_value()); // toexpand.begin(), toexpand.end());
ctx.get_hooks().evaluated_conditional_expression(directive, is_defined);
#else
do {
is_defined = ctx.is_defined_macro((*it).get_value()); // toexpand.begin(), toexpand.end());
} while (ctx.get_hooks().evaluated_conditional_expression(ctx.derived(),
found_directive, directive, is_defined));
#endif
ctx.enter_if_block(!is_defined);
}
///////////////////////////////////////////////////////////////////////////////
//
// on_else(): handle #else directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_else()
{
if (!ctx.enter_else_block()) {
// #else without matching #if
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, missing_matching_if,
"#else", act_pos);
}
}
///////////////////////////////////////////////////////////////////////////////
//
// on_endif(): handle #endif directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_endif()
{
if (!ctx.exit_if_block()) {
// #endif without matching #if
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, missing_matching_if,
"#endif", act_pos);
}
}
///////////////////////////////////////////////////////////////////////////////
// replace all remaining (== undefined) identifiers with an integer literal '0'
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::replace_undefined_identifiers(
token_sequence_type &expanded)
{
typename token_sequence_type::iterator exp_end = expanded.end();
for (typename token_sequence_type::iterator exp_it = expanded.begin();
exp_it != exp_end; ++exp_it)
{
using namespace boost::wave;
token_id id = token_id(*exp_it);
if (IS_CATEGORY(id, IdentifierTokenType) ||
IS_CATEGORY(id, KeywordTokenType))
{
(*exp_it).set_token_id(T_INTLIT);
(*exp_it).set_value("0");
}
}
}
///////////////////////////////////////////////////////////////////////////////
//
// on_if(): handle #if directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_if(
result_type const& found_directive,
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end)
{
// preprocess the given sequence into the provided list
get_token_value<result_type, parse_node_type> get_value;
token_sequence_type toexpand;
std::copy(make_ref_transform_iterator(begin, get_value),
make_ref_transform_iterator(end, get_value),
std::inserter(toexpand, toexpand.end()));
impl::remove_leading_whitespace(ctx, toexpand);
bool if_status = false;
grammars::value_error status = grammars::error_noerror;
token_sequence_type expanded;
do {
expanded.clear();
typename token_sequence_type::iterator begin2 = toexpand.begin();
ctx.expand_whole_tokensequence(begin2, toexpand.end(), expanded);
// replace all remaining (== undefined) identifiers with an integer literal '0'
replace_undefined_identifiers(expanded);
#if BOOST_WAVE_DUMP_CONDITIONAL_EXPRESSIONS != 0
{
string_type outstr(boost::wave::util::impl::as_string(toexpand));
outstr += "(" + boost::wave::util::impl::as_string(expanded) + ")";
BOOST_WAVE_DUMP_CONDITIONAL_EXPRESSIONS_OUT << "#if " << outstr
<< std::endl;
}
#endif
try {
// parse the expression and enter the #if block
if_status = grammars::expression_grammar_gen<result_type>::
evaluate(expanded.begin(), expanded.end(), act_pos,
ctx.get_if_block_status(), status);
}
catch (boost::wave::preprocess_exception const& e) {
// any errors occurred have to be dispatched to the context hooks
ctx.get_hooks().throw_exception(ctx.derived(), e);
break;
}
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
ctx.get_hooks().evaluated_conditional_expression(toexpand, if_status);
} while (false);
#else
} while (ctx.get_hooks().evaluated_conditional_expression(ctx.derived(),
found_directive, toexpand, if_status)
&& status == grammars::error_noerror);
#endif
ctx.enter_if_block(if_status);
if (grammars::error_noerror != status) {
// division or other error by zero occurred
string_type expression = util::impl::as_string(expanded);
if (0 == expression.size())
expression = "<empty expression>";
if (grammars::error_division_by_zero & status) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, division_by_zero,
expression.c_str(), act_pos);
}
else if (grammars::error_integer_overflow & status) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, integer_overflow,
expression.c_str(), act_pos);
}
else if (grammars::error_character_overflow & status) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
character_literal_out_of_range, expression.c_str(), act_pos);
}
}
}
///////////////////////////////////////////////////////////////////////////////
//
// on_elif(): handle #elif directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_elif(
result_type const& found_directive,
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end)
{
// preprocess the given sequence into the provided list
get_token_value<result_type, parse_node_type> get_value;
token_sequence_type toexpand;
std::copy(make_ref_transform_iterator(begin, get_value),
make_ref_transform_iterator(end, get_value),
std::inserter(toexpand, toexpand.end()));
impl::remove_leading_whitespace(ctx, toexpand);
// check current if block status
if (ctx.get_if_block_some_part_status()) {
if (!ctx.enter_elif_block(false)) {
// #else without matching #if
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
missing_matching_if, "#elif", act_pos);
// fall through...
}
// skip all the expression and the trailing whitespace
typename token_sequence_type::iterator begin2 = toexpand.begin();
impl::skip_to_eol(ctx, begin2, toexpand.end());
return; // one of previous #if/#elif was true, so don't enter this #elif
}
// preprocess the given sequence into the provided list
bool if_status = false;
grammars::value_error status = grammars::error_noerror;
token_sequence_type expanded;
do {
expanded.clear();
typename token_sequence_type::iterator begin2 = toexpand.begin();
ctx.expand_whole_tokensequence(begin2, toexpand.end(), expanded);
// replace all remaining (== undefined) identifiers with an integer literal '0'
replace_undefined_identifiers(expanded);
#if BOOST_WAVE_DUMP_CONDITIONAL_EXPRESSIONS != 0
{
string_type outstr(boost::wave::util::impl::as_string(toexpand));
outstr += "(" + boost::wave::util::impl::as_string(expanded) + ")";
BOOST_WAVE_DUMP_CONDITIONAL_EXPRESSIONS_OUT << "#elif " << outstr << std::endl;
}
#endif
try {
// parse the expression and enter the #elif block
if_status = grammars::expression_grammar_gen<result_type>::
evaluate(expanded.begin(), expanded.end(), act_pos,
ctx.get_if_block_status(), status);
}
catch (boost::wave::preprocess_exception const& e) {
// any errors occurred have to be dispatched to the context hooks
ctx.get_hooks().throw_exception(ctx.derived(), e);
}
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
ctx.get_hooks().evaluated_conditional_expression(toexpand, if_status);
} while (false);
#else
} while (ctx.get_hooks().evaluated_conditional_expression(ctx.derived(),
found_directive, toexpand, if_status)
&& status == grammars::error_noerror);
#endif
if (!ctx.enter_elif_block(if_status)) {
// #elif without matching #if
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, missing_matching_if,
"#elif", act_pos);
return;
}
if (grammars::error_noerror != status) {
// division or other error by zero occurred
string_type expression = util::impl::as_string(expanded);
if (0 == expression.size())
expression = "<empty expression>";
if (grammars::error_division_by_zero & status) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, division_by_zero,
expression.c_str(), act_pos);
}
else if (grammars::error_integer_overflow & status) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
integer_overflow, expression.c_str(), act_pos);
}
else if (grammars::error_character_overflow & status) {
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
character_literal_out_of_range, expression.c_str(), act_pos);
}
}
}
///////////////////////////////////////////////////////////////////////////////
//
// on_illformed(): handles the illegal directive
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_illformed(
typename result_type::string_type s)
{
BOOST_ASSERT(ctx.get_if_block_status());
// some messages have more than one newline at the end
typename string_type::size_type p = s.find_last_not_of('\n');
if (string_type::npos != p)
s = s.substr(0, p+1);
// throw the exception
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, ill_formed_directive,
s.c_str(), act_pos);
}
///////////////////////////////////////////////////////////////////////////////
//
// on_line(): handle #line directives
//
///////////////////////////////////////////////////////////////////////////////
namespace impl {
template <typename IteratorT, typename StringT>
bool retrieve_line_info (IteratorT first, IteratorT const &last,
unsigned int &line, StringT &file,
boost::wave::preprocess_exception::error_code& error)
{
using namespace boost::wave;
token_id id = token_id(*first);
if (T_PP_NUMBER == id || T_INTLIT == id) {
// extract line number
using namespace std; // some systems have atoi in namespace std
line = (unsigned int)atoi((*first).get_value().c_str());
if (0 == line)
error = preprocess_exception::bad_line_number;
// re-extract line number with spirit to diagnose overflow
using namespace boost::spirit::classic;
if (!parse((*first).get_value().c_str(), int_p).full)
error = preprocess_exception::bad_line_number;
// extract file name (if it is given)
while (++first != last && IS_CATEGORY(*first, WhiteSpaceTokenType))
/**/; // skip whitespace
if (first != last) {
if (T_STRINGLIT != token_id(*first)) {
error = preprocess_exception::bad_line_filename;
return false;
}
StringT const &file_lit = (*first).get_value();
if ('L' == file_lit[0]) {
error = preprocess_exception::bad_line_filename;
return false; // shouldn't be a wide character string
}
file = file_lit.substr(1, file_lit.size()-2);
// test if there is other junk on this line
while (++first != last && IS_CATEGORY(*first, WhiteSpaceTokenType))
/**/; // skip whitespace
}
return first == last;
}
error = preprocess_exception::bad_line_statement;
return false;
}
}
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_line(
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end)
{
BOOST_ASSERT(ctx.get_if_block_status());
// Try to extract the line number and file name from the given token list
// directly. If that fails, preprocess the whole token sequence and try again
// to extract this information.
token_sequence_type expanded;
get_token_value<result_type, parse_node_type> get_value;
typedef typename ref_transform_iterator_generator<
get_token_value<result_type, parse_node_type>,
typename parse_tree_type::const_iterator
>::type const_tree_iterator_t;
const_tree_iterator_t first = make_ref_transform_iterator(begin, get_value);
const_tree_iterator_t last = make_ref_transform_iterator(end, get_value);
// try to interpret the #line body as a number followed by an optional
// string literal
unsigned int line = 0;
preprocess_exception::error_code error = preprocess_exception::no_error;
string_type file_name;
token_sequence_type toexpand;
std::copy(first, last, std::inserter(toexpand, toexpand.end()));
if (!impl::retrieve_line_info(first, last, line, file_name, error)) {
// preprocess the body of this #line message
typename token_sequence_type::iterator begin2 = toexpand.begin();
ctx.expand_whole_tokensequence(begin2, toexpand.end(),
expanded, false);
error = preprocess_exception::no_error;
if (!impl::retrieve_line_info(expanded.begin(), expanded.end(),
line, file_name, error))
{
typename ContextT::string_type msg(
boost::wave::util::impl::as_string(expanded));
BOOST_WAVE_THROW_VAR_CTX(ctx, preprocess_exception, error,
msg.c_str(), act_pos);
return;
}
// call the corresponding pp hook function
ctx.get_hooks().found_line_directive(ctx.derived(), expanded, line,
file_name.c_str());
}
else {
// call the corresponding pp hook function
ctx.get_hooks().found_line_directive(ctx.derived(), toexpand, line,
file_name.c_str());
}
// the queues should be empty at this point
BOOST_ASSERT(unput_queue.empty());
BOOST_ASSERT(pending_queue.empty());
// make sure error recovery starts on the next line
must_emit_line_directive = true;
// diagnose possible error in detected line directive
if (error != preprocess_exception::no_error) {
typename ContextT::string_type msg(
boost::wave::util::impl::as_string(expanded));
BOOST_WAVE_THROW_VAR_CTX(ctx, preprocess_exception, error,
msg.c_str(), act_pos);
return;
}
// set new line number/filename only if ok
if (!file_name.empty()) { // reuse current file name
using boost::wave::util::impl::unescape_lit;
act_pos.set_file(unescape_lit(file_name).c_str());
}
act_pos.set_line(line);
iter_ctx->first.set_position(act_pos);
}
///////////////////////////////////////////////////////////////////////////////
//
// on_error(): handle #error directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_error(
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end)
{
BOOST_ASSERT(ctx.get_if_block_status());
// preprocess the given sequence into the provided list
token_sequence_type expanded;
get_token_value<result_type, parse_node_type> get_value;
typename ref_transform_iterator_generator<
get_token_value<result_type, parse_node_type>,
typename parse_tree_type::const_iterator
>::type first = make_ref_transform_iterator(begin, get_value);
#if BOOST_WAVE_PREPROCESS_ERROR_MESSAGE_BODY != 0
// preprocess the body of this #error message
token_sequence_type toexpand;
std::copy(first, make_ref_transform_iterator(end, get_value),
std::inserter(toexpand, toexpand.end()));
typename token_sequence_type::iterator begin2 = toexpand.begin();
ctx.expand_whole_tokensequence(begin2, toexpand.end(), expanded,
false);
if (!ctx.get_hooks().found_error_directive(ctx.derived(), toexpand))
#else
// simply copy the body of this #error message to the issued diagnostic
// message
std::copy(first, make_ref_transform_iterator(end, get_value),
std::inserter(expanded, expanded.end()));
if (!ctx.get_hooks().found_error_directive(ctx.derived(), expanded))
#endif
{
// report the corresponding error
BOOST_WAVE_STRINGTYPE msg(boost::wave::util::impl::as_string(expanded));
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, error_directive,
msg.c_str(), act_pos);
}
}
#if BOOST_WAVE_SUPPORT_WARNING_DIRECTIVE != 0
///////////////////////////////////////////////////////////////////////////////
//
// on_warning(): handle #warning directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline void
pp_iterator_functor<ContextT>::on_warning(
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end)
{
BOOST_ASSERT(ctx.get_if_block_status());
// preprocess the given sequence into the provided list
token_sequence_type expanded;
get_token_value<result_type, parse_node_type> get_value;
typename ref_transform_iterator_generator<
get_token_value<result_type, parse_node_type>,
typename parse_tree_type::const_iterator
>::type first = make_ref_transform_iterator(begin, get_value);
#if BOOST_WAVE_PREPROCESS_ERROR_MESSAGE_BODY != 0
// preprocess the body of this #warning message
token_sequence_type toexpand;
std::copy(first, make_ref_transform_iterator(end, get_value),
std::inserter(toexpand, toexpand.end()));
typename token_sequence_type::iterator begin2 = toexpand.begin();
ctx.expand_whole_tokensequence(begin2, toexpand.end(), expanded,
false);
if (!ctx.get_hooks().found_warning_directive(ctx.derived(), toexpand))
#else
// simply copy the body of this #warning message to the issued diagnostic
// message
std::copy(first, make_ref_transform_iterator(end, get_value),
std::inserter(expanded, expanded.end()));
if (!ctx.get_hooks().found_warning_directive(ctx.derived(), expanded))
#endif
{
// report the corresponding error
BOOST_WAVE_STRINGTYPE msg(boost::wave::util::impl::as_string(expanded));
BOOST_WAVE_THROW_CTX(ctx, preprocess_exception, warning_directive,
msg.c_str(), act_pos);
}
}
#endif // BOOST_WAVE_SUPPORT_WARNING_DIRECTIVE != 0
///////////////////////////////////////////////////////////////////////////////
//
// on_pragma(): handle #pragma directives
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
inline bool
pp_iterator_functor<ContextT>::on_pragma(
typename parse_tree_type::const_iterator const &begin,
typename parse_tree_type::const_iterator const &end)
{
using namespace boost::wave;
BOOST_ASSERT(ctx.get_if_block_status());
// Look at the pragma token sequence and decide, if the first token is STDC
// (see C99 standard [6.10.6.2]), if it is, the sequence must _not_ be
// preprocessed.
token_sequence_type expanded;
get_token_value<result_type, parse_node_type> get_value;
typedef typename ref_transform_iterator_generator<
get_token_value<result_type, parse_node_type>,
typename parse_tree_type::const_iterator
>::type const_tree_iterator_t;
const_tree_iterator_t first = make_ref_transform_iterator(begin, get_value);
const_tree_iterator_t last = make_ref_transform_iterator(end, get_value);
expanded.push_back(result_type(T_PP_PRAGMA, "#pragma", act_token.get_position()));
expanded.push_back(result_type(T_SPACE, " ", act_token.get_position()));
while (++first != last && IS_CATEGORY(*first, WhiteSpaceTokenType))
expanded.push_back(*first); // skip whitespace
if (first != last) {
if (T_IDENTIFIER == token_id(*first) &&
boost::wave::need_c99(ctx.get_language()) &&
(*first).get_value() == "STDC")
{
// do _not_ preprocess the token sequence
std::copy(first, last, std::inserter(expanded, expanded.end()));
}
else {
#if BOOST_WAVE_PREPROCESS_PRAGMA_BODY != 0
// preprocess the given tokensequence
token_sequence_type toexpand;
std::copy(first, last, std::inserter(toexpand, toexpand.end()));
typename token_sequence_type::iterator begin2 = toexpand.begin();
ctx.expand_whole_tokensequence(begin2, toexpand.end(),
expanded, false);
#else
// do _not_ preprocess the token sequence
std::copy(first, last, std::inserter(expanded, expanded.end()));
#endif
}
}
expanded.push_back(result_type(T_NEWLINE, "\n", act_token.get_position()));
// the queues should be empty at this point
BOOST_ASSERT(unput_queue.empty());
BOOST_ASSERT(pending_queue.empty());
// try to interpret the expanded #pragma body
token_sequence_type pending;
if (interpret_pragma(expanded, pending)) {
// if there is some replacement text, insert it into the pending queue
if (!pending.empty())
pending_queue.splice(pending_queue.begin(), pending);
return true; // this #pragma was successfully recognized
}
#if BOOST_WAVE_EMIT_PRAGMA_DIRECTIVES != 0
// Move the resulting token sequence into the pending_queue, so it will be
// returned to the caller.
if (boost::wave::need_emit_pragma_directives(ctx.get_language())) {
pending_queue.splice(pending_queue.begin(), expanded);
return false; // return the whole #pragma directive
}
#endif
return true; // skip the #pragma at all
}
template <typename ContextT>
inline bool
pp_iterator_functor<ContextT>::interpret_pragma(
token_sequence_type const &pragma_body, token_sequence_type &result)
{
using namespace cpplexer;
typename token_sequence_type::const_iterator end = pragma_body.end();
typename token_sequence_type::const_iterator it = pragma_body.begin();
for (++it; it != end && IS_CATEGORY(*it, WhiteSpaceTokenType); ++it)
/**/; // skip whitespace
if (it == end) // eof reached
return false;
return boost::wave::util::interpret_pragma(
ctx.derived(), act_token, it, end, result);
}
///////////////////////////////////////////////////////////////////////////////
} // namespace impl
///////////////////////////////////////////////////////////////////////////////
//
// pp_iterator
//
// The boost::wave::pp_iterator template is the iterator, through which
// the resulting preprocessed input stream is accessible.
//
///////////////////////////////////////////////////////////////////////////////
template <typename ContextT>
class pp_iterator
: public boost::spirit::classic::multi_pass<
boost::wave::impl::pp_iterator_functor<ContextT>,
boost::wave::util::functor_input
>
{
public:
typedef boost::wave::impl::pp_iterator_functor<ContextT> input_policy_type;
private:
typedef
boost::spirit::classic::multi_pass<input_policy_type, boost::wave::util::functor_input>
base_type;
typedef pp_iterator<ContextT> self_type;
typedef boost::wave::util::functor_input functor_input_type;
public:
pp_iterator()
{}
template <typename IteratorT>
pp_iterator(ContextT &ctx, IteratorT const &first, IteratorT const &last,
typename ContextT::position_type const &pos)
: base_type(input_policy_type(ctx, first, last, pos))
{}
bool force_include(char const *path_, bool is_last)
{
bool result = this->get_functor().on_include_helper(path_, path_,
false, false);
if (is_last) {
this->functor_input_type::
template inner<input_policy_type>::advance_input();
}
return result;
}
};
///////////////////////////////////////////////////////////////////////////////
} // namespace wave
} // namespace boost
// the suffix header occurs after all of the code
#ifdef BOOST_HAS_ABI_HEADERS
#include BOOST_ABI_SUFFIX
#endif
#endif // !defined(CPP_ITERATOR_HPP_175CA88F_7273_43FA_9039_BCF7459E1F29_INCLUDED)
|