1 //===- OperationKinds.h - Operation enums -----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file enumerates the different kinds of operations that can be
11 // performed by various expressions.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_CLANG_AST_OPERATION_KINDS_H
16 #define LLVM_CLANG_AST_OPERATION_KINDS_H
20 /// CastKind - The kind of operation required for a conversion.
22 /// CK_Dependent - A conversion which cannot yet be analyzed because
23 /// either the expression or target type is dependent. These are
24 /// created only for explicit casts; dependent ASTs aren't required
25 /// to even approximately type-check.
26 /// (T*) malloc(sizeof(T))
27 /// reinterpret_cast<intptr_t>(A<T>::alloc());
30 /// CK_BitCast - A conversion which causes a bit pattern of one type
31 /// to be reinterpreted as a bit pattern of another type. Generally
32 /// the operands must have equivalent size and unrelated types.
34 /// The pointer conversion char* -> int* is a bitcast. Many other
35 /// pointer conversions which are "physically" bitcasts are given
36 /// special cast kinds.
38 /// Vector coercions are bitcasts.
41 /// CK_LValueBitCast - A conversion which reinterprets the address of
42 /// an l-value as an l-value of a different kind. Used for
43 /// reinterpret_casts of l-value expressions to reference types.
44 /// bool b; reinterpret_cast<char&>(b) = 'a';
47 /// CK_LValueToRValue - A conversion which causes the extraction of
48 /// an r-value from the operand gl-value. The result of an r-value
49 /// conversion is always unqualified.
52 /// CK_NoOp - A conversion which does not affect the type other than
53 /// (possibly) adding qualifiers.
55 /// char** -> const char * const *
58 /// CK_BaseToDerived - A conversion from a C++ class pointer/reference
59 /// to a derived class pointer/reference.
60 /// B *b = static_cast<B*>(a);
63 /// CK_DerivedToBase - A conversion from a C++ class pointer
64 /// to a base class pointer.
68 /// CK_UncheckedDerivedToBase - A conversion from a C++ class
69 /// pointer/reference to a base class that can assume that the
70 /// derived pointer is not null.
72 /// b->method_from_a();
73 CK_UncheckedDerivedToBase,
75 /// CK_Dynamic - A C++ dynamic_cast.
78 /// CK_ToUnion - The GCC cast-to-union extension.
79 /// int -> union { int x; float y; }
80 /// float -> union { int x; float y; }
83 /// CK_ArrayToPointerDecay - Array to pointer decay.
85 /// char[5][6] -> char(*)[6]
86 CK_ArrayToPointerDecay,
88 /// CK_FunctionToPointerDecay - Function to pointer decay.
89 /// void(int) -> void(*)(int)
90 CK_FunctionToPointerDecay,
92 /// CK_NullToPointer - Null pointer constant to pointer, ObjC
93 /// pointer, or block pointer.
95 /// void (^block)() = 0;
98 /// CK_NullToMemberPointer - Null pointer constant to member pointer.
100 /// int (A::*fptr)(int) = nullptr;
101 CK_NullToMemberPointer,
103 /// CK_BaseToDerivedMemberPointer - Member pointer in base class to
104 /// member pointer in derived class.
105 /// int B::*mptr = &A::member;
106 CK_BaseToDerivedMemberPointer,
108 /// CK_DerivedToBaseMemberPointer - Member pointer in derived class to
109 /// member pointer in base class.
110 /// int A::*mptr = static_cast<int A::*>(&B::member);
111 CK_DerivedToBaseMemberPointer,
113 /// CK_MemberPointerToBoolean - Member pointer to boolean. A check
114 /// against the null member pointer.
115 CK_MemberPointerToBoolean,
117 /// CK_UserDefinedConversion - Conversion using a user defined type
118 /// conversion function.
119 /// struct A { operator int(); }; int i = int(A());
120 CK_UserDefinedConversion,
122 /// CK_ConstructorConversion - Conversion by constructor.
123 /// struct A { A(int); }; A a = A(10);
124 CK_ConstructorConversion,
126 /// CK_IntegralToPointer - Integral to pointer. A special kind of
127 /// reinterpreting conversion. Applies to normal, ObjC, and block
129 /// (char*) 0x1001aab0
130 /// reinterpret_cast<int*>(0)
131 CK_IntegralToPointer,
133 /// CK_PointerToIntegral - Pointer to integral. A special kind of
134 /// reinterpreting conversion. Applies to normal, ObjC, and block
136 /// (intptr_t) "help!"
137 CK_PointerToIntegral,
139 /// CK_PointerToBoolean - Pointer to boolean conversion. A check
140 /// against null. Applies to normal, ObjC, and block pointers.
143 /// CK_ToVoid - Cast to void, discarding the computed value.
144 /// (void) malloc(2048)
147 /// CK_VectorSplat - A conversion from an arithmetic type to a
148 /// vector of that element type. Fills all elements ("splats") with
149 /// the source value.
150 /// __attribute__((ext_vector_type(4))) int v = 5;
153 /// CK_IntegralCast - A cast between integral types (other than to
154 /// boolean). Variously a bitcast, a truncation, a sign-extension,
155 /// or a zero-extension.
160 /// CK_IntegralToBoolean - Integral to boolean. A check against zero.
162 CK_IntegralToBoolean,
164 /// CK_IntegralToFloating - Integral to floating point.
166 CK_IntegralToFloating,
168 /// CK_FloatingToIntegral - Floating point to integral. Rounds
169 /// towards zero, discarding any fractional component.
171 CK_FloatingToIntegral,
173 /// CK_FloatingToBoolean - Floating point to boolean.
175 CK_FloatingToBoolean,
177 /// CK_FloatingCast - Casting between floating types of different size.
182 /// CK_AnyPointerToObjCPointerCast - Casting any other pointer kind
183 /// to an Objective-C pointer.
184 CK_AnyPointerToObjCPointerCast,
186 /// CK_AnyPointerToBlockPointerCast - Casting any other pointer kind
187 /// to a block pointer.
188 CK_AnyPointerToBlockPointerCast,
190 /// \brief Converting between two Objective-C object types, which
191 /// can occur when performing reference binding to an Objective-C
193 CK_ObjCObjectLValueCast,
195 /// \brief A conversion of a floating point real to a floating point
196 /// complex of the original type. Injects the value as the real
197 /// component with a zero imaginary component.
198 /// float -> _Complex float
199 CK_FloatingRealToComplex,
201 /// \brief Converts a floating point complex to floating point real
202 /// of the source's element type. Just discards the imaginary
204 /// _Complex long double -> long double
205 CK_FloatingComplexToReal,
207 /// \brief Converts a floating point complex to bool by comparing
209 CK_FloatingComplexToBoolean,
211 /// \brief Converts between different floating point complex types.
212 /// _Complex float -> _Complex double
213 CK_FloatingComplexCast,
215 /// \brief Converts from a floating complex to an integral complex.
216 /// _Complex float -> _Complex int
217 CK_FloatingComplexToIntegralComplex,
219 /// \brief Converts from an integral real to an integral complex
220 /// whose element type matches the source. Injects the value as
221 /// the real component with a zero imaginary component.
222 /// long -> _Complex long
223 CK_IntegralRealToComplex,
225 /// \brief Converts an integral complex to an integral real of the
226 /// source's element type by discarding the imaginary component.
227 /// _Complex short -> short
228 CK_IntegralComplexToReal,
230 /// \brief Converts an integral complex to bool by comparing against
232 CK_IntegralComplexToBoolean,
234 /// \brief Converts between different integral complex types.
235 /// _Complex char -> _Complex long long
236 /// _Complex unsigned int -> _Complex signed int
237 CK_IntegralComplexCast,
239 /// \brief Converts from an integral complex to a floating complex.
240 /// _Complex unsigned -> _Complex float
241 CK_IntegralComplexToFloatingComplex
244 #define CK_Invalid ((CastKind) -1)
246 enum BinaryOperatorKind {
247 // Operators listed in order of precedence.
248 // Note that additions to this should also update the StmtVisitor class.
249 BO_PtrMemD, BO_PtrMemI, // [C++ 5.5] Pointer-to-member operators.
250 BO_Mul, BO_Div, BO_Rem, // [C99 6.5.5] Multiplicative operators.
251 BO_Add, BO_Sub, // [C99 6.5.6] Additive operators.
252 BO_Shl, BO_Shr, // [C99 6.5.7] Bitwise shift operators.
253 BO_LT, BO_GT, BO_LE, BO_GE, // [C99 6.5.8] Relational operators.
254 BO_EQ, BO_NE, // [C99 6.5.9] Equality operators.
255 BO_And, // [C99 6.5.10] Bitwise AND operator.
256 BO_Xor, // [C99 6.5.11] Bitwise XOR operator.
257 BO_Or, // [C99 6.5.12] Bitwise OR operator.
258 BO_LAnd, // [C99 6.5.13] Logical AND operator.
259 BO_LOr, // [C99 6.5.14] Logical OR operator.
260 BO_Assign, BO_MulAssign, // [C99 6.5.16] Assignment operators.
261 BO_DivAssign, BO_RemAssign,
262 BO_AddAssign, BO_SubAssign,
263 BO_ShlAssign, BO_ShrAssign,
264 BO_AndAssign, BO_XorAssign,
266 BO_Comma // [C99 6.5.17] Comma operator.
269 enum UnaryOperatorKind {
270 // Note that additions to this should also update the StmtVisitor class.
271 UO_PostInc, UO_PostDec, // [C99 6.5.2.4] Postfix increment and decrement
272 UO_PreInc, UO_PreDec, // [C99 6.5.3.1] Prefix increment and decrement
273 UO_AddrOf, UO_Deref, // [C99 6.5.3.2] Address and indirection
274 UO_Plus, UO_Minus, // [C99 6.5.3.3] Unary arithmetic
275 UO_Not, UO_LNot, // [C99 6.5.3.3] Unary arithmetic
276 UO_Real, UO_Imag, // "__real expr"/"__imag expr" Extension.
277 UO_Extension // __extension__ marker.