/usr/include/clang/AST/ExprObjC.h is in libclang-dev 3.0-6ubuntu3.
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 | //===--- ExprObjC.h - Classes for representing ObjC expressions -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the ExprObjC interface and subclasses.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_EXPROBJC_H
#define LLVM_CLANG_AST_EXPROBJC_H
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Expr.h"
#include "clang/AST/SelectorLocationsKind.h"
#include "clang/Basic/IdentifierTable.h"
namespace clang {
class IdentifierInfo;
class ASTContext;
/// ObjCStringLiteral, used for Objective-C string literals
/// i.e. @"foo".
class ObjCStringLiteral : public Expr {
Stmt *String;
SourceLocation AtLoc;
public:
ObjCStringLiteral(StringLiteral *SL, QualType T, SourceLocation L)
: Expr(ObjCStringLiteralClass, T, VK_RValue, OK_Ordinary, false, false,
false, false),
String(SL), AtLoc(L) {}
explicit ObjCStringLiteral(EmptyShell Empty)
: Expr(ObjCStringLiteralClass, Empty) {}
StringLiteral *getString() { return cast<StringLiteral>(String); }
const StringLiteral *getString() const { return cast<StringLiteral>(String); }
void setString(StringLiteral *S) { String = S; }
SourceLocation getAtLoc() const { return AtLoc; }
void setAtLoc(SourceLocation L) { AtLoc = L; }
SourceRange getSourceRange() const {
return SourceRange(AtLoc, String->getLocEnd());
}
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCStringLiteralClass;
}
static bool classof(const ObjCStringLiteral *) { return true; }
// Iterators
child_range children() { return child_range(&String, &String+1); }
};
/// ObjCEncodeExpr, used for @encode in Objective-C. @encode has the same type
/// and behavior as StringLiteral except that the string initializer is obtained
/// from ASTContext with the encoding type as an argument.
class ObjCEncodeExpr : public Expr {
TypeSourceInfo *EncodedType;
SourceLocation AtLoc, RParenLoc;
public:
ObjCEncodeExpr(QualType T, TypeSourceInfo *EncodedType,
SourceLocation at, SourceLocation rp)
: Expr(ObjCEncodeExprClass, T, VK_LValue, OK_Ordinary,
EncodedType->getType()->isDependentType(),
EncodedType->getType()->isDependentType(),
EncodedType->getType()->isInstantiationDependentType(),
EncodedType->getType()->containsUnexpandedParameterPack()),
EncodedType(EncodedType), AtLoc(at), RParenLoc(rp) {}
explicit ObjCEncodeExpr(EmptyShell Empty) : Expr(ObjCEncodeExprClass, Empty){}
SourceLocation getAtLoc() const { return AtLoc; }
void setAtLoc(SourceLocation L) { AtLoc = L; }
SourceLocation getRParenLoc() const { return RParenLoc; }
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
QualType getEncodedType() const { return EncodedType->getType(); }
TypeSourceInfo *getEncodedTypeSourceInfo() const { return EncodedType; }
void setEncodedTypeSourceInfo(TypeSourceInfo *EncType) {
EncodedType = EncType;
}
SourceRange getSourceRange() const {
return SourceRange(AtLoc, RParenLoc);
}
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCEncodeExprClass;
}
static bool classof(const ObjCEncodeExpr *) { return true; }
// Iterators
child_range children() { return child_range(); }
};
/// ObjCSelectorExpr used for @selector in Objective-C.
class ObjCSelectorExpr : public Expr {
Selector SelName;
SourceLocation AtLoc, RParenLoc;
public:
ObjCSelectorExpr(QualType T, Selector selInfo,
SourceLocation at, SourceLocation rp)
: Expr(ObjCSelectorExprClass, T, VK_RValue, OK_Ordinary, false, false,
false, false),
SelName(selInfo), AtLoc(at), RParenLoc(rp){}
explicit ObjCSelectorExpr(EmptyShell Empty)
: Expr(ObjCSelectorExprClass, Empty) {}
Selector getSelector() const { return SelName; }
void setSelector(Selector S) { SelName = S; }
SourceLocation getAtLoc() const { return AtLoc; }
SourceLocation getRParenLoc() const { return RParenLoc; }
void setAtLoc(SourceLocation L) { AtLoc = L; }
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
SourceRange getSourceRange() const {
return SourceRange(AtLoc, RParenLoc);
}
/// getNumArgs - Return the number of actual arguments to this call.
unsigned getNumArgs() const { return SelName.getNumArgs(); }
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCSelectorExprClass;
}
static bool classof(const ObjCSelectorExpr *) { return true; }
// Iterators
child_range children() { return child_range(); }
};
/// ObjCProtocolExpr used for protocol expression in Objective-C. This is used
/// as: @protocol(foo), as in:
/// obj conformsToProtocol:@protocol(foo)]
/// The return type is "Protocol*".
class ObjCProtocolExpr : public Expr {
ObjCProtocolDecl *TheProtocol;
SourceLocation AtLoc, RParenLoc;
public:
ObjCProtocolExpr(QualType T, ObjCProtocolDecl *protocol,
SourceLocation at, SourceLocation rp)
: Expr(ObjCProtocolExprClass, T, VK_RValue, OK_Ordinary, false, false,
false, false),
TheProtocol(protocol), AtLoc(at), RParenLoc(rp) {}
explicit ObjCProtocolExpr(EmptyShell Empty)
: Expr(ObjCProtocolExprClass, Empty) {}
ObjCProtocolDecl *getProtocol() const { return TheProtocol; }
void setProtocol(ObjCProtocolDecl *P) { TheProtocol = P; }
SourceLocation getAtLoc() const { return AtLoc; }
SourceLocation getRParenLoc() const { return RParenLoc; }
void setAtLoc(SourceLocation L) { AtLoc = L; }
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
SourceRange getSourceRange() const {
return SourceRange(AtLoc, RParenLoc);
}
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCProtocolExprClass;
}
static bool classof(const ObjCProtocolExpr *) { return true; }
// Iterators
child_range children() { return child_range(); }
};
/// ObjCIvarRefExpr - A reference to an ObjC instance variable.
class ObjCIvarRefExpr : public Expr {
class ObjCIvarDecl *D;
SourceLocation Loc;
Stmt *Base;
bool IsArrow:1; // True if this is "X->F", false if this is "X.F".
bool IsFreeIvar:1; // True if ivar reference has no base (self assumed).
public:
ObjCIvarRefExpr(ObjCIvarDecl *d, QualType t,
SourceLocation l, Expr *base,
bool arrow = false, bool freeIvar = false) :
Expr(ObjCIvarRefExprClass, t, VK_LValue, OK_Ordinary,
/*TypeDependent=*/false, base->isValueDependent(),
base->isInstantiationDependent(),
base->containsUnexpandedParameterPack()),
D(d), Loc(l), Base(base), IsArrow(arrow), IsFreeIvar(freeIvar) {}
explicit ObjCIvarRefExpr(EmptyShell Empty)
: Expr(ObjCIvarRefExprClass, Empty) {}
ObjCIvarDecl *getDecl() { return D; }
const ObjCIvarDecl *getDecl() const { return D; }
void setDecl(ObjCIvarDecl *d) { D = d; }
const Expr *getBase() const { return cast<Expr>(Base); }
Expr *getBase() { return cast<Expr>(Base); }
void setBase(Expr * base) { Base = base; }
bool isArrow() const { return IsArrow; }
bool isFreeIvar() const { return IsFreeIvar; }
void setIsArrow(bool A) { IsArrow = A; }
void setIsFreeIvar(bool A) { IsFreeIvar = A; }
SourceLocation getLocation() const { return Loc; }
void setLocation(SourceLocation L) { Loc = L; }
SourceRange getSourceRange() const {
return isFreeIvar() ? SourceRange(Loc)
: SourceRange(getBase()->getLocStart(), Loc);
}
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCIvarRefExprClass;
}
static bool classof(const ObjCIvarRefExpr *) { return true; }
// Iterators
child_range children() { return child_range(&Base, &Base+1); }
};
/// ObjCPropertyRefExpr - A dot-syntax expression to access an ObjC
/// property.
///
class ObjCPropertyRefExpr : public Expr {
private:
/// If the bool is true, this is an implicit property reference; the
/// pointer is an (optional) ObjCMethodDecl and Setter may be set.
/// if the bool is false, this is an explicit property reference;
/// the pointer is an ObjCPropertyDecl and Setter is always null.
llvm::PointerIntPair<NamedDecl*, 1, bool> PropertyOrGetter;
ObjCMethodDecl *Setter;
SourceLocation IdLoc;
/// \brief When the receiver in property access is 'super', this is
/// the location of the 'super' keyword. When it's an interface,
/// this is that interface.
SourceLocation ReceiverLoc;
llvm::PointerUnion3<Stmt*, const Type*, ObjCInterfaceDecl*> Receiver;
public:
ObjCPropertyRefExpr(ObjCPropertyDecl *PD, QualType t,
ExprValueKind VK, ExprObjectKind OK,
SourceLocation l, Expr *base)
: Expr(ObjCPropertyRefExprClass, t, VK, OK,
/*TypeDependent=*/false, base->isValueDependent(),
base->isInstantiationDependent(),
base->containsUnexpandedParameterPack()),
PropertyOrGetter(PD, false), Setter(0),
IdLoc(l), ReceiverLoc(), Receiver(base) {
}
ObjCPropertyRefExpr(ObjCPropertyDecl *PD, QualType t,
ExprValueKind VK, ExprObjectKind OK,
SourceLocation l, SourceLocation sl, QualType st)
: Expr(ObjCPropertyRefExprClass, t, VK, OK,
/*TypeDependent=*/false, false, st->isInstantiationDependentType(),
st->containsUnexpandedParameterPack()),
PropertyOrGetter(PD, false), Setter(0),
IdLoc(l), ReceiverLoc(sl), Receiver(st.getTypePtr()) {
}
ObjCPropertyRefExpr(ObjCMethodDecl *Getter, ObjCMethodDecl *Setter,
QualType T, ExprValueKind VK, ExprObjectKind OK,
SourceLocation IdLoc, Expr *Base)
: Expr(ObjCPropertyRefExprClass, T, VK, OK, false,
Base->isValueDependent(), Base->isInstantiationDependent(),
Base->containsUnexpandedParameterPack()),
PropertyOrGetter(Getter, true), Setter(Setter),
IdLoc(IdLoc), ReceiverLoc(), Receiver(Base) {
}
ObjCPropertyRefExpr(ObjCMethodDecl *Getter, ObjCMethodDecl *Setter,
QualType T, ExprValueKind VK, ExprObjectKind OK,
SourceLocation IdLoc,
SourceLocation SuperLoc, QualType SuperTy)
: Expr(ObjCPropertyRefExprClass, T, VK, OK, false, false, false, false),
PropertyOrGetter(Getter, true), Setter(Setter),
IdLoc(IdLoc), ReceiverLoc(SuperLoc), Receiver(SuperTy.getTypePtr()) {
}
ObjCPropertyRefExpr(ObjCMethodDecl *Getter, ObjCMethodDecl *Setter,
QualType T, ExprValueKind VK, ExprObjectKind OK,
SourceLocation IdLoc,
SourceLocation ReceiverLoc, ObjCInterfaceDecl *Receiver)
: Expr(ObjCPropertyRefExprClass, T, VK, OK, false, false, false, false),
PropertyOrGetter(Getter, true), Setter(Setter),
IdLoc(IdLoc), ReceiverLoc(ReceiverLoc), Receiver(Receiver) {
}
explicit ObjCPropertyRefExpr(EmptyShell Empty)
: Expr(ObjCPropertyRefExprClass, Empty) {}
bool isImplicitProperty() const { return PropertyOrGetter.getInt(); }
bool isExplicitProperty() const { return !PropertyOrGetter.getInt(); }
ObjCPropertyDecl *getExplicitProperty() const {
assert(!isImplicitProperty());
return cast<ObjCPropertyDecl>(PropertyOrGetter.getPointer());
}
ObjCMethodDecl *getImplicitPropertyGetter() const {
assert(isImplicitProperty());
return cast_or_null<ObjCMethodDecl>(PropertyOrGetter.getPointer());
}
ObjCMethodDecl *getImplicitPropertySetter() const {
assert(isImplicitProperty());
return Setter;
}
Selector getGetterSelector() const {
if (isImplicitProperty())
return getImplicitPropertyGetter()->getSelector();
return getExplicitProperty()->getGetterName();
}
Selector getSetterSelector() const {
if (isImplicitProperty())
return getImplicitPropertySetter()->getSelector();
return getExplicitProperty()->getSetterName();
}
const Expr *getBase() const {
return cast<Expr>(Receiver.get<Stmt*>());
}
Expr *getBase() {
return cast<Expr>(Receiver.get<Stmt*>());
}
SourceLocation getLocation() const { return IdLoc; }
SourceLocation getReceiverLocation() const { return ReceiverLoc; }
QualType getSuperReceiverType() const {
return QualType(Receiver.get<const Type*>(), 0);
}
QualType getGetterResultType() const {
QualType ResultType;
if (isExplicitProperty()) {
const ObjCPropertyDecl *PDecl = getExplicitProperty();
if (const ObjCMethodDecl *Getter = PDecl->getGetterMethodDecl())
ResultType = Getter->getResultType();
else
ResultType = getType();
} else {
const ObjCMethodDecl *Getter = getImplicitPropertyGetter();
ResultType = Getter->getResultType(); // with reference!
}
return ResultType;
}
QualType getSetterArgType() const {
QualType ArgType;
if (isImplicitProperty()) {
const ObjCMethodDecl *Setter = getImplicitPropertySetter();
ObjCMethodDecl::param_const_iterator P = Setter->param_begin();
ArgType = (*P)->getType();
} else {
if (ObjCPropertyDecl *PDecl = getExplicitProperty())
if (const ObjCMethodDecl *Setter = PDecl->getSetterMethodDecl()) {
ObjCMethodDecl::param_const_iterator P = Setter->param_begin();
ArgType = (*P)->getType();
}
if (ArgType.isNull())
ArgType = getType();
}
return ArgType;
}
ObjCInterfaceDecl *getClassReceiver() const {
return Receiver.get<ObjCInterfaceDecl*>();
}
bool isObjectReceiver() const { return Receiver.is<Stmt*>(); }
bool isSuperReceiver() const { return Receiver.is<const Type*>(); }
bool isClassReceiver() const { return Receiver.is<ObjCInterfaceDecl*>(); }
SourceRange getSourceRange() const {
return SourceRange((isObjectReceiver() ? getBase()->getLocStart()
: getReceiverLocation()),
IdLoc);
}
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCPropertyRefExprClass;
}
static bool classof(const ObjCPropertyRefExpr *) { return true; }
// Iterators
child_range children() {
if (Receiver.is<Stmt*>()) {
Stmt **begin = reinterpret_cast<Stmt**>(&Receiver); // hack!
return child_range(begin, begin+1);
}
return child_range();
}
private:
friend class ASTStmtReader;
void setExplicitProperty(ObjCPropertyDecl *D) {
PropertyOrGetter.setPointer(D);
PropertyOrGetter.setInt(false);
Setter = 0;
}
void setImplicitProperty(ObjCMethodDecl *Getter, ObjCMethodDecl *Setter) {
PropertyOrGetter.setPointer(Getter);
PropertyOrGetter.setInt(true);
this->Setter = Setter;
}
void setBase(Expr *Base) { Receiver = Base; }
void setSuperReceiver(QualType T) { Receiver = T.getTypePtr(); }
void setClassReceiver(ObjCInterfaceDecl *D) { Receiver = D; }
void setLocation(SourceLocation L) { IdLoc = L; }
void setReceiverLocation(SourceLocation Loc) { ReceiverLoc = Loc; }
};
/// \brief An expression that sends a message to the given Objective-C
/// object or class.
///
/// The following contains two message send expressions:
///
/// \code
/// [[NSString alloc] initWithString:@"Hello"]
/// \endcode
///
/// The innermost message send invokes the "alloc" class method on the
/// NSString class, while the outermost message send invokes the
/// "initWithString" instance method on the object returned from
/// NSString's "alloc". In all, an Objective-C message send can take
/// on four different (although related) forms:
///
/// 1. Send to an object instance.
/// 2. Send to a class.
/// 3. Send to the superclass instance of the current class.
/// 4. Send to the superclass of the current class.
///
/// All four kinds of message sends are modeled by the ObjCMessageExpr
/// class, and can be distinguished via \c getReceiverKind(). Example:
///
class ObjCMessageExpr : public Expr {
/// \brief Stores either the selector that this message is sending
/// to (when \c HasMethod is zero) or an \c ObjCMethodDecl pointer
/// referring to the method that we type-checked against.
uintptr_t SelectorOrMethod;
enum { NumArgsBitWidth = 16 };
/// \brief The number of arguments in the message send, not
/// including the receiver.
unsigned NumArgs : NumArgsBitWidth;
void setNumArgs(unsigned Num) {
assert((Num >> NumArgsBitWidth) == 0 && "Num of args is out of range!");
NumArgs = Num;
}
/// \brief The kind of message send this is, which is one of the
/// ReceiverKind values.
///
/// We pad this out to a byte to avoid excessive masking and shifting.
unsigned Kind : 8;
/// \brief Whether we have an actual method prototype in \c
/// SelectorOrMethod.
///
/// When non-zero, we have a method declaration; otherwise, we just
/// have a selector.
unsigned HasMethod : 1;
/// \brief Whether this message send is a "delegate init call",
/// i.e. a call of an init method on self from within an init method.
unsigned IsDelegateInitCall : 1;
/// \brief Whether the locations of the selector identifiers are in a
/// "standard" position, a enum SelectorLocationsKind.
unsigned SelLocsKind : 2;
/// \brief When the message expression is a send to 'super', this is
/// the location of the 'super' keyword.
SourceLocation SuperLoc;
/// \brief The source locations of the open and close square
/// brackets ('[' and ']', respectively).
SourceLocation LBracLoc, RBracLoc;
ObjCMessageExpr(EmptyShell Empty, unsigned NumArgs)
: Expr(ObjCMessageExprClass, Empty), SelectorOrMethod(0), Kind(0),
HasMethod(0), IsDelegateInitCall(0) {
setNumArgs(NumArgs);
}
ObjCMessageExpr(QualType T, ExprValueKind VK,
SourceLocation LBracLoc,
SourceLocation SuperLoc,
bool IsInstanceSuper,
QualType SuperType,
Selector Sel,
ArrayRef<SourceLocation> SelLocs,
SelectorLocationsKind SelLocsK,
ObjCMethodDecl *Method,
ArrayRef<Expr *> Args,
SourceLocation RBracLoc);
ObjCMessageExpr(QualType T, ExprValueKind VK,
SourceLocation LBracLoc,
TypeSourceInfo *Receiver,
Selector Sel,
ArrayRef<SourceLocation> SelLocs,
SelectorLocationsKind SelLocsK,
ObjCMethodDecl *Method,
ArrayRef<Expr *> Args,
SourceLocation RBracLoc);
ObjCMessageExpr(QualType T, ExprValueKind VK,
SourceLocation LBracLoc,
Expr *Receiver,
Selector Sel,
ArrayRef<SourceLocation> SelLocs,
SelectorLocationsKind SelLocsK,
ObjCMethodDecl *Method,
ArrayRef<Expr *> Args,
SourceLocation RBracLoc);
void initArgsAndSelLocs(ArrayRef<Expr *> Args,
ArrayRef<SourceLocation> SelLocs,
SelectorLocationsKind SelLocsK);
/// \brief Retrieve the pointer value of the message receiver.
void *getReceiverPointer() const {
return *const_cast<void **>(
reinterpret_cast<const void * const*>(this + 1));
}
/// \brief Set the pointer value of the message receiver.
void setReceiverPointer(void *Value) {
*reinterpret_cast<void **>(this + 1) = Value;
}
SelectorLocationsKind getSelLocsKind() const {
return (SelectorLocationsKind)SelLocsKind;
}
bool hasStandardSelLocs() const {
return getSelLocsKind() != SelLoc_NonStandard;
}
/// \brief Get a pointer to the stored selector identifiers locations array.
/// No locations will be stored if HasStandardSelLocs is true.
SourceLocation *getStoredSelLocs() {
return reinterpret_cast<SourceLocation*>(getArgs() + getNumArgs());
}
const SourceLocation *getStoredSelLocs() const {
return reinterpret_cast<const SourceLocation*>(getArgs() + getNumArgs());
}
/// \brief Get the number of stored selector identifiers locations.
/// No locations will be stored if HasStandardSelLocs is true.
unsigned getNumStoredSelLocs() const {
if (hasStandardSelLocs())
return 0;
return getNumSelectorLocs();
}
static ObjCMessageExpr *alloc(ASTContext &C,
ArrayRef<Expr *> Args,
SourceLocation RBraceLoc,
ArrayRef<SourceLocation> SelLocs,
Selector Sel,
SelectorLocationsKind &SelLocsK);
static ObjCMessageExpr *alloc(ASTContext &C,
unsigned NumArgs,
unsigned NumStoredSelLocs);
public:
/// \brief The kind of receiver this message is sending to.
enum ReceiverKind {
/// \brief The receiver is a class.
Class = 0,
/// \brief The receiver is an object instance.
Instance,
/// \brief The receiver is a superclass.
SuperClass,
/// \brief The receiver is the instance of the superclass object.
SuperInstance
};
/// \brief Create a message send to super.
///
/// \param Context The ASTContext in which this expression will be created.
///
/// \param T The result type of this message.
///
/// \param VK The value kind of this message. A message returning
/// a l-value or r-value reference will be an l-value or x-value,
/// respectively.
///
/// \param LBrac The location of the open square bracket '['.
///
/// \param SuperLoc The location of the "super" keyword.
///
/// \param IsInstanceSuper Whether this is an instance "super"
/// message (otherwise, it's a class "super" message).
///
/// \param Sel The selector used to determine which method gets called.
///
/// \param Method The Objective-C method against which this message
/// send was type-checked. May be NULL.
///
/// \param Args The message send arguments.
///
/// \param NumArgs The number of arguments.
///
/// \param RBracLoc The location of the closing square bracket ']'.
static ObjCMessageExpr *Create(ASTContext &Context, QualType T,
ExprValueKind VK,
SourceLocation LBracLoc,
SourceLocation SuperLoc,
bool IsInstanceSuper,
QualType SuperType,
Selector Sel,
ArrayRef<SourceLocation> SelLocs,
ObjCMethodDecl *Method,
ArrayRef<Expr *> Args,
SourceLocation RBracLoc);
/// \brief Create a class message send.
///
/// \param Context The ASTContext in which this expression will be created.
///
/// \param T The result type of this message.
///
/// \param VK The value kind of this message. A message returning
/// a l-value or r-value reference will be an l-value or x-value,
/// respectively.
///
/// \param LBrac The location of the open square bracket '['.
///
/// \param Receiver The type of the receiver, including
/// source-location information.
///
/// \param Sel The selector used to determine which method gets called.
///
/// \param Method The Objective-C method against which this message
/// send was type-checked. May be NULL.
///
/// \param Args The message send arguments.
///
/// \param NumArgs The number of arguments.
///
/// \param RBracLoc The location of the closing square bracket ']'.
static ObjCMessageExpr *Create(ASTContext &Context, QualType T,
ExprValueKind VK,
SourceLocation LBracLoc,
TypeSourceInfo *Receiver,
Selector Sel,
ArrayRef<SourceLocation> SelLocs,
ObjCMethodDecl *Method,
ArrayRef<Expr *> Args,
SourceLocation RBracLoc);
/// \brief Create an instance message send.
///
/// \param Context The ASTContext in which this expression will be created.
///
/// \param T The result type of this message.
///
/// \param VK The value kind of this message. A message returning
/// a l-value or r-value reference will be an l-value or x-value,
/// respectively.
///
/// \param LBrac The location of the open square bracket '['.
///
/// \param Receiver The expression used to produce the object that
/// will receive this message.
///
/// \param Sel The selector used to determine which method gets called.
///
/// \param Method The Objective-C method against which this message
/// send was type-checked. May be NULL.
///
/// \param Args The message send arguments.
///
/// \param NumArgs The number of arguments.
///
/// \param RBracLoc The location of the closing square bracket ']'.
static ObjCMessageExpr *Create(ASTContext &Context, QualType T,
ExprValueKind VK,
SourceLocation LBracLoc,
Expr *Receiver,
Selector Sel,
ArrayRef<SourceLocation> SeLocs,
ObjCMethodDecl *Method,
ArrayRef<Expr *> Args,
SourceLocation RBracLoc);
/// \brief Create an empty Objective-C message expression, to be
/// filled in by subsequent calls.
///
/// \param Context The context in which the message send will be created.
///
/// \param NumArgs The number of message arguments, not including
/// the receiver.
static ObjCMessageExpr *CreateEmpty(ASTContext &Context,
unsigned NumArgs,
unsigned NumStoredSelLocs);
/// \brief Determine the kind of receiver that this message is being
/// sent to.
ReceiverKind getReceiverKind() const { return (ReceiverKind)Kind; }
/// \brief Source range of the receiver.
SourceRange getReceiverRange() const;
/// \brief Determine whether this is an instance message to either a
/// computed object or to super.
bool isInstanceMessage() const {
return getReceiverKind() == Instance || getReceiverKind() == SuperInstance;
}
/// \brief Determine whether this is an class message to either a
/// specified class or to super.
bool isClassMessage() const {
return getReceiverKind() == Class || getReceiverKind() == SuperClass;
}
/// \brief Returns the receiver of an instance message.
///
/// \brief Returns the object expression for an instance message, or
/// NULL for a message that is not an instance message.
Expr *getInstanceReceiver() {
if (getReceiverKind() == Instance)
return static_cast<Expr *>(getReceiverPointer());
return 0;
}
const Expr *getInstanceReceiver() const {
return const_cast<ObjCMessageExpr*>(this)->getInstanceReceiver();
}
/// \brief Turn this message send into an instance message that
/// computes the receiver object with the given expression.
void setInstanceReceiver(Expr *rec) {
Kind = Instance;
setReceiverPointer(rec);
}
/// \brief Returns the type of a class message send, or NULL if the
/// message is not a class message.
QualType getClassReceiver() const {
if (TypeSourceInfo *TSInfo = getClassReceiverTypeInfo())
return TSInfo->getType();
return QualType();
}
/// \brief Returns a type-source information of a class message
/// send, or NULL if the message is not a class message.
TypeSourceInfo *getClassReceiverTypeInfo() const {
if (getReceiverKind() == Class)
return reinterpret_cast<TypeSourceInfo *>(getReceiverPointer());
return 0;
}
void setClassReceiver(TypeSourceInfo *TSInfo) {
Kind = Class;
setReceiverPointer(TSInfo);
}
/// \brief Retrieve the location of the 'super' keyword for a class
/// or instance message to 'super', otherwise an invalid source location.
SourceLocation getSuperLoc() const {
if (getReceiverKind() == SuperInstance || getReceiverKind() == SuperClass)
return SuperLoc;
return SourceLocation();
}
/// \brief Retrieve the Objective-C interface to which this message
/// is being directed, if known.
///
/// This routine cross-cuts all of the different kinds of message
/// sends to determine what the underlying (statically known) type
/// of the receiver will be; use \c getReceiverKind() to determine
/// whether the message is a class or an instance method, whether it
/// is a send to super or not, etc.
///
/// \returns The Objective-C interface if known, otherwise NULL.
ObjCInterfaceDecl *getReceiverInterface() const;
/// \brief Retrieve the type referred to by 'super'.
///
/// The returned type will either be an ObjCInterfaceType (for an
/// class message to super) or an ObjCObjectPointerType that refers
/// to a class (for an instance message to super);
QualType getSuperType() const {
if (getReceiverKind() == SuperInstance || getReceiverKind() == SuperClass)
return QualType::getFromOpaquePtr(getReceiverPointer());
return QualType();
}
void setSuper(SourceLocation Loc, QualType T, bool IsInstanceSuper) {
Kind = IsInstanceSuper? SuperInstance : SuperClass;
SuperLoc = Loc;
setReceiverPointer(T.getAsOpaquePtr());
}
Selector getSelector() const;
void setSelector(Selector S) {
HasMethod = false;
SelectorOrMethod = reinterpret_cast<uintptr_t>(S.getAsOpaquePtr());
}
const ObjCMethodDecl *getMethodDecl() const {
if (HasMethod)
return reinterpret_cast<const ObjCMethodDecl *>(SelectorOrMethod);
return 0;
}
ObjCMethodDecl *getMethodDecl() {
if (HasMethod)
return reinterpret_cast<ObjCMethodDecl *>(SelectorOrMethod);
return 0;
}
void setMethodDecl(ObjCMethodDecl *MD) {
HasMethod = true;
SelectorOrMethod = reinterpret_cast<uintptr_t>(MD);
}
ObjCMethodFamily getMethodFamily() const {
if (HasMethod) return getMethodDecl()->getMethodFamily();
return getSelector().getMethodFamily();
}
/// \brief Return the number of actual arguments in this message,
/// not counting the receiver.
unsigned getNumArgs() const { return NumArgs; }
/// \brief Retrieve the arguments to this message, not including the
/// receiver.
Expr **getArgs() {
return reinterpret_cast<Expr **>(this + 1) + 1;
}
const Expr * const *getArgs() const {
return reinterpret_cast<const Expr * const *>(this + 1) + 1;
}
/// getArg - Return the specified argument.
Expr *getArg(unsigned Arg) {
assert(Arg < NumArgs && "Arg access out of range!");
return cast<Expr>(getArgs()[Arg]);
}
const Expr *getArg(unsigned Arg) const {
assert(Arg < NumArgs && "Arg access out of range!");
return cast<Expr>(getArgs()[Arg]);
}
/// setArg - Set the specified argument.
void setArg(unsigned Arg, Expr *ArgExpr) {
assert(Arg < NumArgs && "Arg access out of range!");
getArgs()[Arg] = ArgExpr;
}
/// isDelegateInitCall - Answers whether this message send has been
/// tagged as a "delegate init call", i.e. a call to a method in the
/// -init family on self from within an -init method implementation.
bool isDelegateInitCall() const { return IsDelegateInitCall; }
void setDelegateInitCall(bool isDelegate) { IsDelegateInitCall = isDelegate; }
SourceLocation getLeftLoc() const { return LBracLoc; }
SourceLocation getRightLoc() const { return RBracLoc; }
SourceLocation getSelectorStartLoc() const { return getSelectorLoc(0); }
SourceLocation getSelectorLoc(unsigned Index) const {
assert(Index < getNumSelectorLocs() && "Index out of range!");
if (hasStandardSelLocs())
return getStandardSelectorLoc(Index, getSelector(),
getSelLocsKind() == SelLoc_StandardWithSpace,
llvm::makeArrayRef(const_cast<Expr**>(getArgs()),
getNumArgs()),
RBracLoc);
return getStoredSelLocs()[Index];
}
void getSelectorLocs(SmallVectorImpl<SourceLocation> &SelLocs) const;
unsigned getNumSelectorLocs() const {
Selector Sel = getSelector();
if (Sel.isUnarySelector())
return 1;
return Sel.getNumArgs();
}
void setSourceRange(SourceRange R) {
LBracLoc = R.getBegin();
RBracLoc = R.getEnd();
}
SourceRange getSourceRange() const {
return SourceRange(LBracLoc, RBracLoc);
}
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCMessageExprClass;
}
static bool classof(const ObjCMessageExpr *) { return true; }
// Iterators
child_range children();
typedef ExprIterator arg_iterator;
typedef ConstExprIterator const_arg_iterator;
arg_iterator arg_begin() { return reinterpret_cast<Stmt **>(getArgs()); }
arg_iterator arg_end() {
return reinterpret_cast<Stmt **>(getArgs() + NumArgs);
}
const_arg_iterator arg_begin() const {
return reinterpret_cast<Stmt const * const*>(getArgs());
}
const_arg_iterator arg_end() const {
return reinterpret_cast<Stmt const * const*>(getArgs() + NumArgs);
}
friend class ASTStmtReader;
friend class ASTStmtWriter;
};
/// ObjCIsaExpr - Represent X->isa and X.isa when X is an ObjC 'id' type.
/// (similar in spirit to MemberExpr).
class ObjCIsaExpr : public Expr {
/// Base - the expression for the base object pointer.
Stmt *Base;
/// IsaMemberLoc - This is the location of the 'isa'.
SourceLocation IsaMemberLoc;
/// IsArrow - True if this is "X->F", false if this is "X.F".
bool IsArrow;
public:
ObjCIsaExpr(Expr *base, bool isarrow, SourceLocation l, QualType ty)
: Expr(ObjCIsaExprClass, ty, VK_LValue, OK_Ordinary,
/*TypeDependent=*/false, base->isValueDependent(),
base->isInstantiationDependent(),
/*ContainsUnexpandedParameterPack=*/false),
Base(base), IsaMemberLoc(l), IsArrow(isarrow) {}
/// \brief Build an empty expression.
explicit ObjCIsaExpr(EmptyShell Empty) : Expr(ObjCIsaExprClass, Empty) { }
void setBase(Expr *E) { Base = E; }
Expr *getBase() const { return cast<Expr>(Base); }
bool isArrow() const { return IsArrow; }
void setArrow(bool A) { IsArrow = A; }
/// getMemberLoc - Return the location of the "member", in X->F, it is the
/// location of 'F'.
SourceLocation getIsaMemberLoc() const { return IsaMemberLoc; }
void setIsaMemberLoc(SourceLocation L) { IsaMemberLoc = L; }
SourceRange getSourceRange() const {
return SourceRange(getBase()->getLocStart(), IsaMemberLoc);
}
SourceLocation getExprLoc() const { return IsaMemberLoc; }
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCIsaExprClass;
}
static bool classof(const ObjCIsaExpr *) { return true; }
// Iterators
child_range children() { return child_range(&Base, &Base+1); }
};
/// ObjCIndirectCopyRestoreExpr - Represents the passing of a function
/// argument by indirect copy-restore in ARC. This is used to support
/// passing indirect arguments with the wrong lifetime, e.g. when
/// passing the address of a __strong local variable to an 'out'
/// parameter. This expression kind is only valid in an "argument"
/// position to some sort of call expression.
///
/// The parameter must have type 'pointer to T', and the argument must
/// have type 'pointer to U', where T and U agree except possibly in
/// qualification. If the argument value is null, then a null pointer
/// is passed; otherwise it points to an object A, and:
/// 1. A temporary object B of type T is initialized, either by
/// zero-initialization (used when initializing an 'out' parameter)
/// or copy-initialization (used when initializing an 'inout'
/// parameter).
/// 2. The address of the temporary is passed to the function.
/// 3. If the call completes normally, A is move-assigned from B.
/// 4. Finally, A is destroyed immediately.
///
/// Currently 'T' must be a retainable object lifetime and must be
/// __autoreleasing; this qualifier is ignored when initializing
/// the value.
class ObjCIndirectCopyRestoreExpr : public Expr {
Stmt *Operand;
// unsigned ObjCIndirectCopyRestoreBits.ShouldCopy : 1;
friend class ASTReader;
friend class ASTStmtReader;
void setShouldCopy(bool shouldCopy) {
ObjCIndirectCopyRestoreExprBits.ShouldCopy = shouldCopy;
}
explicit ObjCIndirectCopyRestoreExpr(EmptyShell Empty)
: Expr(ObjCIndirectCopyRestoreExprClass, Empty) { }
public:
ObjCIndirectCopyRestoreExpr(Expr *operand, QualType type, bool shouldCopy)
: Expr(ObjCIndirectCopyRestoreExprClass, type, VK_LValue, OK_Ordinary,
operand->isTypeDependent(), operand->isValueDependent(),
operand->isInstantiationDependent(),
operand->containsUnexpandedParameterPack()),
Operand(operand) {
setShouldCopy(shouldCopy);
}
Expr *getSubExpr() { return cast<Expr>(Operand); }
const Expr *getSubExpr() const { return cast<Expr>(Operand); }
/// shouldCopy - True if we should do the 'copy' part of the
/// copy-restore. If false, the temporary will be zero-initialized.
bool shouldCopy() const { return ObjCIndirectCopyRestoreExprBits.ShouldCopy; }
child_range children() { return child_range(&Operand, &Operand+1); }
// Source locations are determined by the subexpression.
SourceRange getSourceRange() const { return Operand->getSourceRange(); }
SourceLocation getExprLoc() const { return getSubExpr()->getExprLoc(); }
static bool classof(const Stmt *s) {
return s->getStmtClass() == ObjCIndirectCopyRestoreExprClass;
}
static bool classof(const ObjCIndirectCopyRestoreExpr *) { return true; }
};
/// \brief An Objective-C "bridged" cast expression, which casts between
/// Objective-C pointers and C pointers, transferring ownership in the process.
///
/// \code
/// NSString *str = (__bridge_transfer NSString *)CFCreateString();
/// \endcode
class ObjCBridgedCastExpr : public ExplicitCastExpr {
SourceLocation LParenLoc;
SourceLocation BridgeKeywordLoc;
unsigned Kind : 2;
friend class ASTStmtReader;
friend class ASTStmtWriter;
public:
ObjCBridgedCastExpr(SourceLocation LParenLoc, ObjCBridgeCastKind Kind,
CastKind CK, SourceLocation BridgeKeywordLoc,
TypeSourceInfo *TSInfo, Expr *Operand)
: ExplicitCastExpr(ObjCBridgedCastExprClass, TSInfo->getType(), VK_RValue,
CK, Operand, 0, TSInfo),
LParenLoc(LParenLoc), BridgeKeywordLoc(BridgeKeywordLoc), Kind(Kind) { }
/// \brief Construct an empty Objective-C bridged cast.
explicit ObjCBridgedCastExpr(EmptyShell Shell)
: ExplicitCastExpr(ObjCBridgedCastExprClass, Shell, 0) { }
SourceLocation getLParenLoc() const { return LParenLoc; }
/// \brief Determine which kind of bridge is being performed via this cast.
ObjCBridgeCastKind getBridgeKind() const {
return static_cast<ObjCBridgeCastKind>(Kind);
}
/// \brief Retrieve the kind of bridge being performed as a string.
StringRef getBridgeKindName() const;
/// \brief The location of the bridge keyword.
SourceLocation getBridgeKeywordLoc() const { return BridgeKeywordLoc; }
SourceRange getSourceRange() const {
return SourceRange(LParenLoc, getSubExpr()->getLocEnd());
}
static bool classof(const Stmt *T) {
return T->getStmtClass() == ObjCBridgedCastExprClass;
}
static bool classof(const ObjCBridgedCastExpr *) { return true; }
};
} // end namespace clang
#endif
|