/usr/share/ada/adainclude/gnatprj/prj-strt.adb is in libgnatprj4.9-dev 4.9.2-1.
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 | ------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- P R J . S T R T --
-- --
-- B o d y --
-- --
-- Copyright (C) 2001-2010, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Err_Vars; use Err_Vars;
with Prj.Attr; use Prj.Attr;
with Prj.Err; use Prj.Err;
with Snames;
with Table;
with Uintp; use Uintp;
package body Prj.Strt is
Buffer : String_Access;
Buffer_Last : Natural := 0;
type Choice_String is record
The_String : Name_Id;
Already_Used : Boolean := False;
end record;
-- The string of a case label, and an indication that it has already
-- been used (to avoid duplicate case labels).
Choices_Initial : constant := 10;
Choices_Increment : constant := 100;
-- These should be in alloc.ads
Choice_Node_Low_Bound : constant := 0;
Choice_Node_High_Bound : constant := 099_999_999;
-- In practice, infinite
type Choice_Node_Id is
range Choice_Node_Low_Bound .. Choice_Node_High_Bound;
First_Choice_Node_Id : constant Choice_Node_Id :=
Choice_Node_Low_Bound;
package Choices is
new Table.Table
(Table_Component_Type => Choice_String,
Table_Index_Type => Choice_Node_Id'Base,
Table_Low_Bound => First_Choice_Node_Id,
Table_Initial => Choices_Initial,
Table_Increment => Choices_Increment,
Table_Name => "Prj.Strt.Choices");
-- Used to store the case labels and check that there is no duplicate
package Choice_Lasts is
new Table.Table
(Table_Component_Type => Choice_Node_Id,
Table_Index_Type => Nat,
Table_Low_Bound => 1,
Table_Initial => 10,
Table_Increment => 100,
Table_Name => "Prj.Strt.Choice_Lasts");
-- Used to store the indexes of the choices in table Choices, to
-- distinguish nested case constructions.
Choice_First : Choice_Node_Id := 0;
-- Index in table Choices of the first case label of the current
-- case construction. Zero means no current case construction.
type Name_Location is record
Name : Name_Id := No_Name;
Location : Source_Ptr := No_Location;
end record;
-- Store the identifier and the location of a simple name
package Names is
new Table.Table
(Table_Component_Type => Name_Location,
Table_Index_Type => Nat,
Table_Low_Bound => 1,
Table_Initial => 10,
Table_Increment => 100,
Table_Name => "Prj.Strt.Names");
-- Used to accumulate the single names of a name
procedure Add (This_String : Name_Id);
-- Add a string to the case label list, indicating that it has not
-- yet been used.
procedure Add_To_Names (NL : Name_Location);
-- Add one single names to table Names
procedure External_Reference
(In_Tree : Project_Node_Tree_Ref;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
External_Value : out Project_Node_Id;
Expr_Kind : in out Variable_Kind;
Flags : Processing_Flags);
-- Parse an external reference. Current token is "external"
procedure Attribute_Reference
(In_Tree : Project_Node_Tree_Ref;
Reference : out Project_Node_Id;
First_Attribute : Attribute_Node_Id;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
Flags : Processing_Flags);
-- Parse an attribute reference. Current token is an apostrophe
procedure Terms
(In_Tree : Project_Node_Tree_Ref;
Term : out Project_Node_Id;
Expr_Kind : in out Variable_Kind;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
Optional_Index : Boolean;
Flags : Processing_Flags);
-- Recursive procedure to parse one term or several terms concatenated
-- using "&".
---------
-- Add --
---------
procedure Add (This_String : Name_Id) is
begin
Choices.Increment_Last;
Choices.Table (Choices.Last) :=
(The_String => This_String,
Already_Used => False);
end Add;
------------------
-- Add_To_Names --
------------------
procedure Add_To_Names (NL : Name_Location) is
begin
Names.Increment_Last;
Names.Table (Names.Last) := NL;
end Add_To_Names;
-------------------------
-- Attribute_Reference --
-------------------------
procedure Attribute_Reference
(In_Tree : Project_Node_Tree_Ref;
Reference : out Project_Node_Id;
First_Attribute : Attribute_Node_Id;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
Flags : Processing_Flags)
is
Current_Attribute : Attribute_Node_Id := First_Attribute;
begin
-- Declare the node of the attribute reference
Reference :=
Default_Project_Node
(Of_Kind => N_Attribute_Reference, In_Tree => In_Tree);
Set_Location_Of (Reference, In_Tree, To => Token_Ptr);
Scan (In_Tree); -- past apostrophe
-- Body may be an attribute name
if Token = Tok_Body then
Token := Tok_Identifier;
Token_Name := Snames.Name_Body;
end if;
Expect (Tok_Identifier, "identifier");
if Token = Tok_Identifier then
Set_Name_Of (Reference, In_Tree, To => Token_Name);
-- Check if the identifier is one of the attribute identifiers in the
-- context (package or project level attributes).
Current_Attribute :=
Attribute_Node_Id_Of (Token_Name, Starting_At => First_Attribute);
-- If the identifier is not allowed, report an error
if Current_Attribute = Empty_Attribute then
Error_Msg_Name_1 := Token_Name;
Error_Msg (Flags, "unknown attribute %%", Token_Ptr);
Reference := Empty_Node;
-- Scan past the attribute name
Scan (In_Tree);
else
-- Give its characteristics to this attribute reference
Set_Project_Node_Of (Reference, In_Tree, To => Current_Project);
Set_Package_Node_Of (Reference, In_Tree, To => Current_Package);
Set_Expression_Kind_Of
(Reference, In_Tree, To => Variable_Kind_Of (Current_Attribute));
Set_Case_Insensitive
(Reference, In_Tree,
To => Attribute_Kind_Of (Current_Attribute) in
All_Case_Insensitive_Associative_Array);
-- Scan past the attribute name
Scan (In_Tree);
-- If the attribute is an associative array, get the index
if Attribute_Kind_Of (Current_Attribute) /= Single then
Expect (Tok_Left_Paren, "`(`");
if Token = Tok_Left_Paren then
Scan (In_Tree);
if Others_Allowed_For (Current_Attribute)
and then Token = Tok_Others
then
Set_Associative_Array_Index_Of
(Reference, In_Tree, To => All_Other_Names);
Scan (In_Tree);
else
if Others_Allowed_For (Current_Attribute) then
Expect
(Tok_String_Literal, "literal string or others");
else
Expect (Tok_String_Literal, "literal string");
end if;
if Token = Tok_String_Literal then
Set_Associative_Array_Index_Of
(Reference, In_Tree, To => Token_Name);
Scan (In_Tree);
end if;
end if;
end if;
Expect (Tok_Right_Paren, "`)`");
if Token = Tok_Right_Paren then
Scan (In_Tree);
end if;
end if;
end if;
-- Change name of obsolete attributes
if Present (Reference) then
case Name_Of (Reference, In_Tree) is
when Snames.Name_Specification =>
Set_Name_Of (Reference, In_Tree, To => Snames.Name_Spec);
when Snames.Name_Specification_Suffix =>
Set_Name_Of
(Reference, In_Tree, To => Snames.Name_Spec_Suffix);
when Snames.Name_Implementation =>
Set_Name_Of (Reference, In_Tree, To => Snames.Name_Body);
when Snames.Name_Implementation_Suffix =>
Set_Name_Of
(Reference, In_Tree, To => Snames.Name_Body_Suffix);
when others =>
null;
end case;
end if;
end if;
end Attribute_Reference;
---------------------------
-- End_Case_Construction --
---------------------------
procedure End_Case_Construction
(Check_All_Labels : Boolean;
Case_Location : Source_Ptr;
Flags : Processing_Flags)
is
Non_Used : Natural := 0;
First_Non_Used : Choice_Node_Id := First_Choice_Node_Id;
begin
-- First, if Check_All_Labels is True, check if all values
-- of the string type have been used.
if Check_All_Labels then
for Choice in Choice_First .. Choices.Last loop
if not Choices.Table (Choice).Already_Used then
Non_Used := Non_Used + 1;
if Non_Used = 1 then
First_Non_Used := Choice;
end if;
end if;
end loop;
-- If only one is not used, report a single warning for this value
if Non_Used = 1 then
Error_Msg_Name_1 := Choices.Table (First_Non_Used).The_String;
Error_Msg (Flags, "?value %% is not used as label", Case_Location);
-- If several are not used, report a warning for each one of them
elsif Non_Used > 1 then
Error_Msg
(Flags, "?the following values are not used as labels:",
Case_Location);
for Choice in First_Non_Used .. Choices.Last loop
if not Choices.Table (Choice).Already_Used then
Error_Msg_Name_1 := Choices.Table (Choice).The_String;
Error_Msg (Flags, "\?%%", Case_Location);
end if;
end loop;
end if;
end if;
-- If this is the only case construction, empty the tables
if Choice_Lasts.Last = 1 then
Choice_Lasts.Set_Last (0);
Choices.Set_Last (First_Choice_Node_Id);
Choice_First := 0;
elsif Choice_Lasts.Last = 2 then
-- This is the second case construction, set the tables to the first
Choice_Lasts.Set_Last (1);
Choices.Set_Last (Choice_Lasts.Table (1));
Choice_First := 1;
else
-- This is the 3rd or more case construction, set the tables to the
-- previous one.
Choice_Lasts.Decrement_Last;
Choices.Set_Last (Choice_Lasts.Table (Choice_Lasts.Last));
Choice_First := Choice_Lasts.Table (Choice_Lasts.Last - 1) + 1;
end if;
end End_Case_Construction;
------------------------
-- External_Reference --
------------------------
procedure External_Reference
(In_Tree : Project_Node_Tree_Ref;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
External_Value : out Project_Node_Id;
Expr_Kind : in out Variable_Kind;
Flags : Processing_Flags)
is
Field_Id : Project_Node_Id := Empty_Node;
Ext_List : Boolean := False;
begin
External_Value :=
Default_Project_Node
(Of_Kind => N_External_Value,
In_Tree => In_Tree);
Set_Location_Of (External_Value, In_Tree, To => Token_Ptr);
-- The current token is either external or external_as_list
Ext_List := Token = Tok_External_As_List;
Scan (In_Tree);
if Ext_List then
Set_Expression_Kind_Of (External_Value, In_Tree, To => List);
else
Set_Expression_Kind_Of (External_Value, In_Tree, To => Single);
end if;
if Expr_Kind = Undefined then
if Ext_List then
Expr_Kind := List;
else
Expr_Kind := Single;
end if;
end if;
Expect (Tok_Left_Paren, "`(`");
-- Scan past the left parenthesis
if Token = Tok_Left_Paren then
Scan (In_Tree);
end if;
-- Get the name of the external reference
Expect (Tok_String_Literal, "literal string");
if Token = Tok_String_Literal then
Field_Id :=
Default_Project_Node
(Of_Kind => N_Literal_String,
In_Tree => In_Tree,
And_Expr_Kind => Single);
Set_String_Value_Of (Field_Id, In_Tree, To => Token_Name);
Set_External_Reference_Of (External_Value, In_Tree, To => Field_Id);
-- Scan past the first argument
Scan (In_Tree);
case Token is
when Tok_Right_Paren =>
if Ext_List then
Error_Msg (Flags, "`,` expected", Token_Ptr);
end if;
Scan (In_Tree); -- scan past right paren
when Tok_Comma =>
Scan (In_Tree); -- scan past comma
-- Get the string expression for the default
declare
Loc : constant Source_Ptr := Token_Ptr;
begin
Parse_Expression
(In_Tree => In_Tree,
Expression => Field_Id,
Flags => Flags,
Current_Project => Current_Project,
Current_Package => Current_Package,
Optional_Index => False);
if Expression_Kind_Of (Field_Id, In_Tree) = List then
Error_Msg
(Flags, "expression must be a single string", Loc);
else
Set_External_Default_Of
(External_Value, In_Tree, To => Field_Id);
end if;
end;
Expect (Tok_Right_Paren, "`)`");
if Token = Tok_Right_Paren then
Scan (In_Tree); -- scan past right paren
end if;
when others =>
if Ext_List then
Error_Msg (Flags, "`,` expected", Token_Ptr);
else
Error_Msg (Flags, "`,` or `)` expected", Token_Ptr);
end if;
end case;
end if;
end External_Reference;
-----------------------
-- Parse_Choice_List --
-----------------------
procedure Parse_Choice_List
(In_Tree : Project_Node_Tree_Ref;
First_Choice : out Project_Node_Id;
Flags : Processing_Flags)
is
Current_Choice : Project_Node_Id := Empty_Node;
Next_Choice : Project_Node_Id := Empty_Node;
Choice_String : Name_Id := No_Name;
Found : Boolean := False;
begin
-- Declare the node of the first choice
First_Choice :=
Default_Project_Node
(Of_Kind => N_Literal_String,
In_Tree => In_Tree,
And_Expr_Kind => Single);
-- Initially Current_Choice is the same as First_Choice
Current_Choice := First_Choice;
loop
Expect (Tok_String_Literal, "literal string");
exit when Token /= Tok_String_Literal;
Set_Location_Of (Current_Choice, In_Tree, To => Token_Ptr);
Choice_String := Token_Name;
-- Give the string value to the current choice
Set_String_Value_Of (Current_Choice, In_Tree, To => Choice_String);
-- Check if the label is part of the string type and if it has not
-- been already used.
Found := False;
for Choice in Choice_First .. Choices.Last loop
if Choices.Table (Choice).The_String = Choice_String then
-- This label is part of the string type
Found := True;
if Choices.Table (Choice).Already_Used then
-- But it has already appeared in a choice list for this
-- case construction so report an error.
Error_Msg_Name_1 := Choice_String;
Error_Msg (Flags, "duplicate case label %%", Token_Ptr);
else
Choices.Table (Choice).Already_Used := True;
end if;
exit;
end if;
end loop;
-- If the label is not part of the string list, report an error
if not Found then
Error_Msg_Name_1 := Choice_String;
Error_Msg (Flags, "illegal case label %%", Token_Ptr);
end if;
-- Scan past the label
Scan (In_Tree);
-- If there is no '|', we are done
if Token = Tok_Vertical_Bar then
-- Otherwise, declare the node of the next choice, link it to
-- Current_Choice and set Current_Choice to this new node.
Next_Choice :=
Default_Project_Node
(Of_Kind => N_Literal_String,
In_Tree => In_Tree,
And_Expr_Kind => Single);
Set_Next_Literal_String
(Current_Choice, In_Tree, To => Next_Choice);
Current_Choice := Next_Choice;
Scan (In_Tree);
else
exit;
end if;
end loop;
end Parse_Choice_List;
----------------------
-- Parse_Expression --
----------------------
procedure Parse_Expression
(In_Tree : Project_Node_Tree_Ref;
Expression : out Project_Node_Id;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
Optional_Index : Boolean;
Flags : Processing_Flags)
is
First_Term : Project_Node_Id := Empty_Node;
Expression_Kind : Variable_Kind := Undefined;
begin
-- Declare the node of the expression
Expression :=
Default_Project_Node (Of_Kind => N_Expression, In_Tree => In_Tree);
Set_Location_Of (Expression, In_Tree, To => Token_Ptr);
-- Parse the term or terms of the expression
Terms (In_Tree => In_Tree,
Term => First_Term,
Expr_Kind => Expression_Kind,
Flags => Flags,
Current_Project => Current_Project,
Current_Package => Current_Package,
Optional_Index => Optional_Index);
-- Set the first term and the expression kind
Set_First_Term (Expression, In_Tree, To => First_Term);
Set_Expression_Kind_Of (Expression, In_Tree, To => Expression_Kind);
end Parse_Expression;
----------------------------
-- Parse_String_Type_List --
----------------------------
procedure Parse_String_Type_List
(In_Tree : Project_Node_Tree_Ref;
First_String : out Project_Node_Id;
Flags : Processing_Flags)
is
Last_String : Project_Node_Id := Empty_Node;
Next_String : Project_Node_Id := Empty_Node;
String_Value : Name_Id := No_Name;
begin
-- Declare the node of the first string
First_String :=
Default_Project_Node
(Of_Kind => N_Literal_String,
In_Tree => In_Tree,
And_Expr_Kind => Single);
-- Initially, Last_String is the same as First_String
Last_String := First_String;
loop
Expect (Tok_String_Literal, "literal string");
exit when Token /= Tok_String_Literal;
String_Value := Token_Name;
-- Give its string value to Last_String
Set_String_Value_Of (Last_String, In_Tree, To => String_Value);
Set_Location_Of (Last_String, In_Tree, To => Token_Ptr);
-- Now, check if the string is already part of the string type
declare
Current : Project_Node_Id := First_String;
begin
while Current /= Last_String loop
if String_Value_Of (Current, In_Tree) = String_Value then
-- This is a repetition, report an error
Error_Msg_Name_1 := String_Value;
Error_Msg (Flags, "duplicate value %% in type", Token_Ptr);
exit;
end if;
Current := Next_Literal_String (Current, In_Tree);
end loop;
end;
-- Scan past the literal string
Scan (In_Tree);
-- If there is no comma following the literal string, we are done
if Token /= Tok_Comma then
exit;
else
-- Declare the next string, link it to Last_String and set
-- Last_String to its node.
Next_String :=
Default_Project_Node
(Of_Kind => N_Literal_String,
In_Tree => In_Tree,
And_Expr_Kind => Single);
Set_Next_Literal_String (Last_String, In_Tree, To => Next_String);
Last_String := Next_String;
Scan (In_Tree);
end if;
end loop;
end Parse_String_Type_List;
------------------------------
-- Parse_Variable_Reference --
------------------------------
procedure Parse_Variable_Reference
(In_Tree : Project_Node_Tree_Ref;
Variable : out Project_Node_Id;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
Flags : Processing_Flags)
is
Current_Variable : Project_Node_Id := Empty_Node;
The_Package : Project_Node_Id := Current_Package;
The_Project : Project_Node_Id := Current_Project;
Specified_Project : Project_Node_Id := Empty_Node;
Specified_Package : Project_Node_Id := Empty_Node;
Look_For_Variable : Boolean := True;
First_Attribute : Attribute_Node_Id := Empty_Attribute;
Variable_Name : Name_Id;
begin
Names.Init;
loop
Expect (Tok_Identifier, "identifier");
if Token /= Tok_Identifier then
Look_For_Variable := False;
exit;
end if;
Add_To_Names (NL => (Name => Token_Name, Location => Token_Ptr));
Scan (In_Tree);
exit when Token /= Tok_Dot;
Scan (In_Tree);
end loop;
if Look_For_Variable then
if Token = Tok_Apostrophe then
-- Attribute reference
case Names.Last is
when 0 =>
-- Cannot happen
null;
when 1 =>
-- This may be a project name or a package name.
-- Project name have precedence.
-- First, look if it can be a package name
First_Attribute :=
First_Attribute_Of
(Package_Node_Id_Of (Names.Table (1).Name));
-- Now, look if it can be a project name
if Names.Table (1).Name =
Name_Of (Current_Project, In_Tree)
then
The_Project := Current_Project;
else
The_Project :=
Imported_Or_Extended_Project_Of
(Current_Project, In_Tree, Names.Table (1).Name);
end if;
if No (The_Project) then
-- If it is neither a project name nor a package name,
-- report an error.
if First_Attribute = Empty_Attribute then
Error_Msg_Name_1 := Names.Table (1).Name;
Error_Msg (Flags, "unknown project %",
Names.Table (1).Location);
First_Attribute := Attribute_First;
else
-- If it is a package name, check if the package has
-- already been declared in the current project.
The_Package :=
First_Package_Of (Current_Project, In_Tree);
while Present (The_Package)
and then Name_Of (The_Package, In_Tree) /=
Names.Table (1).Name
loop
The_Package :=
Next_Package_In_Project (The_Package, In_Tree);
end loop;
-- If it has not been already declared, report an
-- error.
if No (The_Package) then
Error_Msg_Name_1 := Names.Table (1).Name;
Error_Msg (Flags, "package % not yet defined",
Names.Table (1).Location);
end if;
end if;
else
-- It is a project name
First_Attribute := Attribute_First;
The_Package := Empty_Node;
end if;
when others =>
-- We have either a project name made of several simple
-- names (long project), or a project name (short project)
-- followed by a package name. The long project name has
-- precedence.
declare
Short_Project : Name_Id;
Long_Project : Name_Id;
begin
-- Clear the Buffer
Buffer_Last := 0;
-- Get the name of the short project
for Index in 1 .. Names.Last - 1 loop
Add_To_Buffer
(Get_Name_String (Names.Table (Index).Name),
Buffer, Buffer_Last);
if Index /= Names.Last - 1 then
Add_To_Buffer (".", Buffer, Buffer_Last);
end if;
end loop;
Name_Len := Buffer_Last;
Name_Buffer (1 .. Buffer_Last) :=
Buffer (1 .. Buffer_Last);
Short_Project := Name_Find;
-- Now, add the last simple name to get the name of the
-- long project.
Add_To_Buffer (".", Buffer, Buffer_Last);
Add_To_Buffer
(Get_Name_String (Names.Table (Names.Last).Name),
Buffer, Buffer_Last);
Name_Len := Buffer_Last;
Name_Buffer (1 .. Buffer_Last) :=
Buffer (1 .. Buffer_Last);
Long_Project := Name_Find;
-- Check if the long project is imported or extended
if Long_Project = Name_Of (Current_Project, In_Tree) then
The_Project := Current_Project;
else
The_Project :=
Imported_Or_Extended_Project_Of
(Current_Project,
In_Tree,
Long_Project);
end if;
-- If the long project exists, then this is the prefix
-- of the attribute.
if Present (The_Project) then
First_Attribute := Attribute_First;
The_Package := Empty_Node;
else
-- Otherwise, check if the short project is imported
-- or extended.
if Short_Project =
Name_Of (Current_Project, In_Tree)
then
The_Project := Current_Project;
else
The_Project := Imported_Or_Extended_Project_Of
(Current_Project, In_Tree,
Short_Project);
end if;
-- If short project does not exist, report an error
if No (The_Project) then
Error_Msg_Name_1 := Long_Project;
Error_Msg_Name_2 := Short_Project;
Error_Msg (Flags, "unknown projects % or %",
Names.Table (1).Location);
The_Package := Empty_Node;
First_Attribute := Attribute_First;
else
-- Now, we check if the package has been declared
-- in this project.
The_Package :=
First_Package_Of (The_Project, In_Tree);
while Present (The_Package)
and then Name_Of (The_Package, In_Tree) /=
Names.Table (Names.Last).Name
loop
The_Package :=
Next_Package_In_Project (The_Package, In_Tree);
end loop;
-- If it has not, then we report an error
if No (The_Package) then
Error_Msg_Name_1 :=
Names.Table (Names.Last).Name;
Error_Msg_Name_2 := Short_Project;
Error_Msg (Flags,
"package % not declared in project %",
Names.Table (Names.Last).Location);
First_Attribute := Attribute_First;
else
-- Otherwise, we have the correct project and
-- package.
First_Attribute :=
First_Attribute_Of
(Package_Id_Of (The_Package, In_Tree));
end if;
end if;
end if;
end;
end case;
Attribute_Reference
(In_Tree,
Variable,
Flags => Flags,
Current_Project => The_Project,
Current_Package => The_Package,
First_Attribute => First_Attribute);
return;
end if;
end if;
Variable :=
Default_Project_Node
(Of_Kind => N_Variable_Reference, In_Tree => In_Tree);
if Look_For_Variable then
case Names.Last is
when 0 =>
-- Cannot happen (so why null instead of raise PE???)
null;
when 1 =>
-- Simple variable name
Set_Name_Of (Variable, In_Tree, To => Names.Table (1).Name);
when 2 =>
-- Variable name with a simple name prefix that can be
-- a project name or a package name. Project names have
-- priority over package names.
Set_Name_Of (Variable, In_Tree, To => Names.Table (2).Name);
-- Check if it can be a package name
The_Package := First_Package_Of (Current_Project, In_Tree);
while Present (The_Package)
and then Name_Of (The_Package, In_Tree) /=
Names.Table (1).Name
loop
The_Package :=
Next_Package_In_Project (The_Package, In_Tree);
end loop;
-- Now look for a possible project name
The_Project := Imported_Or_Extended_Project_Of
(Current_Project, In_Tree, Names.Table (1).Name);
if Present (The_Project) then
Specified_Project := The_Project;
elsif No (The_Package) then
Error_Msg_Name_1 := Names.Table (1).Name;
Error_Msg (Flags, "unknown package or project %",
Names.Table (1).Location);
Look_For_Variable := False;
else
Specified_Package := The_Package;
end if;
when others =>
-- Variable name with a prefix that is either a project name
-- made of several simple names, or a project name followed
-- by a package name.
Set_Name_Of
(Variable, In_Tree, To => Names.Table (Names.Last).Name);
declare
Short_Project : Name_Id;
Long_Project : Name_Id;
begin
-- First, we get the two possible project names
-- Clear the buffer
Buffer_Last := 0;
-- Add all the simple names, except the last two
for Index in 1 .. Names.Last - 2 loop
Add_To_Buffer
(Get_Name_String (Names.Table (Index).Name),
Buffer, Buffer_Last);
if Index /= Names.Last - 2 then
Add_To_Buffer (".", Buffer, Buffer_Last);
end if;
end loop;
Name_Len := Buffer_Last;
Name_Buffer (1 .. Name_Len) := Buffer (1 .. Buffer_Last);
Short_Project := Name_Find;
-- Add the simple name before the name of the variable
Add_To_Buffer (".", Buffer, Buffer_Last);
Add_To_Buffer
(Get_Name_String (Names.Table (Names.Last - 1).Name),
Buffer, Buffer_Last);
Name_Len := Buffer_Last;
Name_Buffer (1 .. Name_Len) := Buffer (1 .. Buffer_Last);
Long_Project := Name_Find;
-- Check if the prefix is the name of an imported or
-- extended project.
The_Project := Imported_Or_Extended_Project_Of
(Current_Project, In_Tree, Long_Project);
if Present (The_Project) then
Specified_Project := The_Project;
else
-- Now check if the prefix may be a project name followed
-- by a package name.
-- First check for a possible project name
The_Project :=
Imported_Or_Extended_Project_Of
(Current_Project, In_Tree, Short_Project);
if No (The_Project) then
-- Unknown prefix, report an error
Error_Msg_Name_1 := Long_Project;
Error_Msg_Name_2 := Short_Project;
Error_Msg
(Flags, "unknown projects % or %",
Names.Table (1).Location);
Look_For_Variable := False;
else
Specified_Project := The_Project;
-- Now look for the package in this project
The_Package := First_Package_Of (The_Project, In_Tree);
while Present (The_Package)
and then Name_Of (The_Package, In_Tree) /=
Names.Table (Names.Last - 1).Name
loop
The_Package :=
Next_Package_In_Project (The_Package, In_Tree);
end loop;
if No (The_Package) then
-- The package does not exist, report an error
Error_Msg_Name_1 := Names.Table (2).Name;
Error_Msg (Flags, "unknown package %",
Names.Table (Names.Last - 1).Location);
Look_For_Variable := False;
else
Specified_Package := The_Package;
end if;
end if;
end if;
end;
end case;
end if;
if Look_For_Variable then
Variable_Name := Name_Of (Variable, In_Tree);
Set_Project_Node_Of (Variable, In_Tree, To => Specified_Project);
Set_Package_Node_Of (Variable, In_Tree, To => Specified_Package);
if Present (Specified_Project) then
The_Project := Specified_Project;
else
The_Project := Current_Project;
end if;
Current_Variable := Empty_Node;
-- Look for this variable
-- If a package was specified, check if the variable has been
-- declared in this package.
if Present (Specified_Package) then
Current_Variable :=
First_Variable_Of (Specified_Package, In_Tree);
while Present (Current_Variable)
and then
Name_Of (Current_Variable, In_Tree) /= Variable_Name
loop
Current_Variable := Next_Variable (Current_Variable, In_Tree);
end loop;
else
-- Otherwise, if no project has been specified and we are in
-- a package, first check if the variable has been declared in
-- the package.
if No (Specified_Project)
and then Present (Current_Package)
then
Current_Variable :=
First_Variable_Of (Current_Package, In_Tree);
while Present (Current_Variable)
and then Name_Of (Current_Variable, In_Tree) /= Variable_Name
loop
Current_Variable :=
Next_Variable (Current_Variable, In_Tree);
end loop;
end if;
-- If we have not found the variable in the package, check if the
-- variable has been declared in the project, or in any of its
-- ancestors.
if No (Current_Variable) then
declare
Proj : Project_Node_Id := The_Project;
begin
loop
Current_Variable := First_Variable_Of (Proj, In_Tree);
while
Present (Current_Variable)
and then
Name_Of (Current_Variable, In_Tree) /= Variable_Name
loop
Current_Variable :=
Next_Variable (Current_Variable, In_Tree);
end loop;
exit when Present (Current_Variable);
Proj := Parent_Project_Of (Proj, In_Tree);
Set_Project_Node_Of (Variable, In_Tree, To => Proj);
exit when No (Proj);
end loop;
end;
end if;
end if;
-- If the variable was not found, report an error
if No (Current_Variable) then
Error_Msg_Name_1 := Variable_Name;
Error_Msg
(Flags, "unknown variable %", Names.Table (Names.Last).Location);
end if;
end if;
if Present (Current_Variable) then
Set_Expression_Kind_Of
(Variable, In_Tree,
To => Expression_Kind_Of (Current_Variable, In_Tree));
if Kind_Of (Current_Variable, In_Tree) =
N_Typed_Variable_Declaration
then
Set_String_Type_Of
(Variable, In_Tree,
To => String_Type_Of (Current_Variable, In_Tree));
end if;
end if;
-- If the variable is followed by a left parenthesis, report an error
-- but attempt to scan the index.
if Token = Tok_Left_Paren then
Error_Msg
(Flags, "\variables cannot be associative arrays", Token_Ptr);
Scan (In_Tree);
Expect (Tok_String_Literal, "literal string");
if Token = Tok_String_Literal then
Scan (In_Tree);
Expect (Tok_Right_Paren, "`)`");
if Token = Tok_Right_Paren then
Scan (In_Tree);
end if;
end if;
end if;
end Parse_Variable_Reference;
---------------------------------
-- Start_New_Case_Construction --
---------------------------------
procedure Start_New_Case_Construction
(In_Tree : Project_Node_Tree_Ref;
String_Type : Project_Node_Id)
is
Current_String : Project_Node_Id;
begin
-- Set Choice_First, depending on whether this is the first case
-- construction or not.
if Choice_First = 0 then
Choice_First := 1;
Choices.Set_Last (First_Choice_Node_Id);
else
Choice_First := Choices.Last + 1;
end if;
-- Add the literal of the string type to the Choices table
if Present (String_Type) then
Current_String := First_Literal_String (String_Type, In_Tree);
while Present (Current_String) loop
Add (This_String => String_Value_Of (Current_String, In_Tree));
Current_String := Next_Literal_String (Current_String, In_Tree);
end loop;
end if;
-- Set the value of the last choice in table Choice_Lasts
Choice_Lasts.Increment_Last;
Choice_Lasts.Table (Choice_Lasts.Last) := Choices.Last;
end Start_New_Case_Construction;
-----------
-- Terms --
-----------
procedure Terms
(In_Tree : Project_Node_Tree_Ref;
Term : out Project_Node_Id;
Expr_Kind : in out Variable_Kind;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
Optional_Index : Boolean;
Flags : Processing_Flags)
is
Next_Term : Project_Node_Id := Empty_Node;
Term_Id : Project_Node_Id := Empty_Node;
Current_Expression : Project_Node_Id := Empty_Node;
Next_Expression : Project_Node_Id := Empty_Node;
Current_Location : Source_Ptr := No_Location;
Reference : Project_Node_Id := Empty_Node;
begin
-- Declare a new node for the term
Term := Default_Project_Node (Of_Kind => N_Term, In_Tree => In_Tree);
Set_Location_Of (Term, In_Tree, To => Token_Ptr);
case Token is
when Tok_Left_Paren =>
-- If we have a left parenthesis and we don't know the expression
-- kind, then this is a string list.
case Expr_Kind is
when Undefined =>
Expr_Kind := List;
when List =>
null;
when Single =>
-- If we already know that this is a single string, report
-- an error, but set the expression kind to string list to
-- avoid several errors.
Expr_Kind := List;
Error_Msg
(Flags, "literal string list cannot appear in a string",
Token_Ptr);
end case;
-- Declare a new node for this literal string list
Term_Id := Default_Project_Node
(Of_Kind => N_Literal_String_List,
In_Tree => In_Tree,
And_Expr_Kind => List);
Set_Current_Term (Term, In_Tree, To => Term_Id);
Set_Location_Of (Term, In_Tree, To => Token_Ptr);
-- Scan past the left parenthesis
Scan (In_Tree);
-- If the left parenthesis is immediately followed by a right
-- parenthesis, the literal string list is empty.
if Token = Tok_Right_Paren then
Scan (In_Tree);
else
-- Otherwise parse the expression(s) in the literal string list
loop
Current_Location := Token_Ptr;
Parse_Expression
(In_Tree => In_Tree,
Expression => Next_Expression,
Flags => Flags,
Current_Project => Current_Project,
Current_Package => Current_Package,
Optional_Index => Optional_Index);
-- The expression kind is String list, report an error
if Expression_Kind_Of (Next_Expression, In_Tree) = List then
Error_Msg (Flags, "single expression expected",
Current_Location);
end if;
-- If Current_Expression is empty, it means that the
-- expression is the first in the string list.
if No (Current_Expression) then
Set_First_Expression_In_List
(Term_Id, In_Tree, To => Next_Expression);
else
Set_Next_Expression_In_List
(Current_Expression, In_Tree, To => Next_Expression);
end if;
Current_Expression := Next_Expression;
-- If there is a comma, continue with the next expression
exit when Token /= Tok_Comma;
Scan (In_Tree); -- past the comma
end loop;
-- We expect a closing right parenthesis
Expect (Tok_Right_Paren, "`)`");
if Token = Tok_Right_Paren then
Scan (In_Tree);
end if;
end if;
when Tok_String_Literal =>
-- If we don't know the expression kind (first term), then it is
-- a simple string.
if Expr_Kind = Undefined then
Expr_Kind := Single;
end if;
-- Declare a new node for the string literal
Term_Id :=
Default_Project_Node
(Of_Kind => N_Literal_String, In_Tree => In_Tree);
Set_Current_Term (Term, In_Tree, To => Term_Id);
Set_String_Value_Of (Term_Id, In_Tree, To => Token_Name);
-- Scan past the string literal
Scan (In_Tree);
-- Check for possible index expression
if Token = Tok_At then
if not Optional_Index then
Error_Msg (Flags, "index not allowed here", Token_Ptr);
Scan (In_Tree);
if Token = Tok_Integer_Literal then
Scan (In_Tree);
end if;
-- Set the index value
else
Scan (In_Tree);
Expect (Tok_Integer_Literal, "integer literal");
if Token = Tok_Integer_Literal then
declare
Index : constant Int := UI_To_Int (Int_Literal_Value);
begin
if Index = 0 then
Error_Msg
(Flags, "index cannot be zero", Token_Ptr);
else
Set_Source_Index_Of
(Term_Id, In_Tree, To => Index);
end if;
end;
Scan (In_Tree);
end if;
end if;
end if;
when Tok_Identifier =>
Current_Location := Token_Ptr;
-- Get the variable or attribute reference
Parse_Variable_Reference
(In_Tree => In_Tree,
Variable => Reference,
Flags => Flags,
Current_Project => Current_Project,
Current_Package => Current_Package);
Set_Current_Term (Term, In_Tree, To => Reference);
if Present (Reference) then
-- If we don't know the expression kind (first term), then it
-- has the kind of the variable or attribute reference.
if Expr_Kind = Undefined then
Expr_Kind := Expression_Kind_Of (Reference, In_Tree);
elsif Expr_Kind = Single
and then Expression_Kind_Of (Reference, In_Tree) = List
then
-- If the expression is a single list, and the reference is
-- a string list, report an error, and set the expression
-- kind to string list to avoid multiple errors.
Expr_Kind := List;
Error_Msg
(Flags,
"list variable cannot appear in single string expression",
Current_Location);
end if;
end if;
when Tok_Project =>
-- Project can appear in an expression as the prefix of an
-- attribute reference of the current project.
Current_Location := Token_Ptr;
Scan (In_Tree);
Expect (Tok_Apostrophe, "`'`");
if Token = Tok_Apostrophe then
Attribute_Reference
(In_Tree => In_Tree,
Reference => Reference,
Flags => Flags,
First_Attribute => Prj.Attr.Attribute_First,
Current_Project => Current_Project,
Current_Package => Empty_Node);
Set_Current_Term (Term, In_Tree, To => Reference);
end if;
-- Same checks as above for the expression kind
if Present (Reference) then
if Expr_Kind = Undefined then
Expr_Kind := Expression_Kind_Of (Reference, In_Tree);
elsif Expr_Kind = Single
and then Expression_Kind_Of (Reference, In_Tree) = List
then
Error_Msg
(Flags, "lists cannot appear in single string expression",
Current_Location);
end if;
end if;
when Tok_External | Tok_External_As_List =>
External_Reference
(In_Tree => In_Tree,
Flags => Flags,
Current_Project => Current_Project,
Current_Package => Current_Package,
Expr_Kind => Expr_Kind,
External_Value => Reference);
Set_Current_Term (Term, In_Tree, To => Reference);
when others =>
Error_Msg (Flags, "cannot be part of an expression", Token_Ptr);
Term := Empty_Node;
return;
end case;
-- If there is an '&', call Terms recursively
if Token = Tok_Ampersand then
Scan (In_Tree); -- scan past ampersand
Terms
(In_Tree => In_Tree,
Term => Next_Term,
Expr_Kind => Expr_Kind,
Flags => Flags,
Current_Project => Current_Project,
Current_Package => Current_Package,
Optional_Index => Optional_Index);
-- And link the next term to this term
Set_Next_Term (Term, In_Tree, To => Next_Term);
end if;
end Terms;
end Prj.Strt;
|