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_NoOp - A conversion which does not affect the type other than
48 /// (possibly) adding qualifiers.
50 /// char** -> const char * const *
53 /// CK_BaseToDerived - A conversion from a C++ class pointer/reference
54 /// to a derived class pointer/reference.
55 /// B *b = static_cast<B*>(a);
58 /// CK_DerivedToBase - A conversion from a C++ class pointer
59 /// to a base class pointer.
63 /// CK_UncheckedDerivedToBase - A conversion from a C++ class
64 /// pointer/reference to a base class that can assume that the
65 /// derived pointer is not null.
67 /// b->method_from_a();
68 CK_UncheckedDerivedToBase,
70 /// CK_Dynamic - A C++ dynamic_cast.
73 /// CK_ToUnion - The GCC cast-to-union extension.
74 /// int -> union { int x; float y; }
75 /// float -> union { int x; float y; }
78 /// CK_ArrayToPointerDecay - Array to pointer decay.
80 /// char[5][6] -> char(*)[6]
81 CK_ArrayToPointerDecay,
83 /// CK_FunctionToPointerDecay - Function to pointer decay.
84 /// void(int) -> void(*)(int)
85 CK_FunctionToPointerDecay,
87 /// CK_NullToPointer - Null pointer constant to pointer, ObjC
88 /// pointer, or block pointer.
90 /// void (^block)() = 0;
93 /// CK_NullToMemberPointer - Null pointer constant to member pointer.
95 /// int (A::*fptr)(int) = nullptr;
96 CK_NullToMemberPointer,
98 /// CK_BaseToDerivedMemberPointer - Member pointer in base class to
99 /// member pointer in derived class.
100 /// int B::*mptr = &A::member;
101 CK_BaseToDerivedMemberPointer,
103 /// CK_DerivedToBaseMemberPointer - Member pointer in derived class to
104 /// member pointer in base class.
105 /// int A::*mptr = static_cast<int A::*>(&B::member);
106 CK_DerivedToBaseMemberPointer,
108 /// CK_MemberPointerToBoolean - Member pointer to boolean. A check
109 /// against the null member pointer.
110 CK_MemberPointerToBoolean,
112 /// CK_UserDefinedConversion - Conversion using a user defined type
113 /// conversion function.
114 /// struct A { operator int(); }; int i = int(A());
115 CK_UserDefinedConversion,
117 /// CK_ConstructorConversion - Conversion by constructor.
118 /// struct A { A(int); }; A a = A(10);
119 CK_ConstructorConversion,
121 /// CK_IntegralToPointer - Integral to pointer. A special kind of
122 /// reinterpreting conversion. Applies to normal, ObjC, and block
124 /// (char*) 0x1001aab0
125 /// reinterpret_cast<int*>(0)
126 CK_IntegralToPointer,
128 /// CK_PointerToIntegral - Pointer to integral. A special kind of
129 /// reinterpreting conversion. Applies to normal, ObjC, and block
131 /// (intptr_t) "help!"
132 CK_PointerToIntegral,
134 /// CK_PointerToBoolean - Pointer to boolean conversion. A check
135 /// against null. Applies to normal, ObjC, and block pointers.
138 /// CK_ToVoid - Cast to void, discarding the computed value.
139 /// (void) malloc(2048)
142 /// CK_VectorSplat - A conversion from an arithmetic type to a
143 /// vector of that element type. Fills all elements ("splats") with
144 /// the source value.
145 /// __attribute__((ext_vector_type(4))) int v = 5;
148 /// CK_IntegralCast - A cast between integral types (other than to
149 /// boolean). Variously a bitcast, a truncation, a sign-extension,
150 /// or a zero-extension.
155 /// CK_IntegralToBoolean - Integral to boolean. A check against zero.
157 CK_IntegralToBoolean,
159 /// CK_IntegralToFloating - Integral to floating point.
161 CK_IntegralToFloating,
163 /// CK_FloatingToIntegral - Floating point to integral. Rounds
164 /// towards zero, discarding any fractional component.
166 CK_FloatingToIntegral,
168 /// CK_FloatingToBoolean - Floating point to boolean.
170 CK_FloatingToBoolean,
172 /// CK_FloatingCast - Casting between floating types of different size.
177 /// CK_AnyPointerToObjCPointerCast - Casting any other pointer kind
178 /// to an Objective-C pointer.
179 CK_AnyPointerToObjCPointerCast,
181 /// CK_AnyPointerToBlockPointerCast - Casting any other pointer kind
182 /// to a block pointer.
183 CK_AnyPointerToBlockPointerCast,
185 /// \brief Converting between two Objective-C object types, which
186 /// can occur when performing reference binding to an Objective-C
188 CK_ObjCObjectLValueCast,
190 /// \brief A conversion of a floating point real to a floating point
191 /// complex of the original type. Injects the value as the real
192 /// component with a zero imaginary component.
193 /// float -> _Complex float
194 CK_FloatingRealToComplex,
196 /// \brief Converts a floating point complex to floating point real
197 /// of the source's element type. Just discards the imaginary
199 /// _Complex long double -> long double
200 CK_FloatingComplexToReal,
202 /// \brief Converts a floating point complex to bool by comparing
204 CK_FloatingComplexToBoolean,
206 /// \brief Converts between different floating point complex types.
207 /// _Complex float -> _Complex double
208 CK_FloatingComplexCast,
210 /// \brief Converts from a floating complex to an integral complex.
211 /// _Complex float -> _Complex int
212 CK_FloatingComplexToIntegralComplex,
214 /// \brief Converts from an integral real to an integral complex
215 /// whose element type matches the source. Injects the value as
216 /// the real component with a zero imaginary component.
217 /// long -> _Complex long
218 CK_IntegralRealToComplex,
220 /// \brief Converts an integral complex to an integral real of the
221 /// source's element type by discarding the imaginary component.
222 /// _Complex short -> short
223 CK_IntegralComplexToReal,
225 /// \brief Converts an integral complex to bool by comparing against
227 CK_IntegralComplexToBoolean,
229 /// \brief Converts between different integral complex types.
230 /// _Complex char -> _Complex long long
231 /// _Complex unsigned int -> _Complex signed int
232 CK_IntegralComplexCast,
234 /// \brief Converts from an integral complex to a floating complex.
235 /// _Complex unsigned -> _Complex float
236 CK_IntegralComplexToFloatingComplex
239 #define CK_Invalid ((CastKind) -1)
241 enum BinaryOperatorKind {
242 // Operators listed in order of precedence.
243 // Note that additions to this should also update the StmtVisitor class.
244 BO_PtrMemD, BO_PtrMemI, // [C++ 5.5] Pointer-to-member operators.
245 BO_Mul, BO_Div, BO_Rem, // [C99 6.5.5] Multiplicative operators.
246 BO_Add, BO_Sub, // [C99 6.5.6] Additive operators.
247 BO_Shl, BO_Shr, // [C99 6.5.7] Bitwise shift operators.
248 BO_LT, BO_GT, BO_LE, BO_GE, // [C99 6.5.8] Relational operators.
249 BO_EQ, BO_NE, // [C99 6.5.9] Equality operators.
250 BO_And, // [C99 6.5.10] Bitwise AND operator.
251 BO_Xor, // [C99 6.5.11] Bitwise XOR operator.
252 BO_Or, // [C99 6.5.12] Bitwise OR operator.
253 BO_LAnd, // [C99 6.5.13] Logical AND operator.
254 BO_LOr, // [C99 6.5.14] Logical OR operator.
255 BO_Assign, BO_MulAssign, // [C99 6.5.16] Assignment operators.
256 BO_DivAssign, BO_RemAssign,
257 BO_AddAssign, BO_SubAssign,
258 BO_ShlAssign, BO_ShrAssign,
259 BO_AndAssign, BO_XorAssign,
261 BO_Comma // [C99 6.5.17] Comma operator.
264 enum UnaryOperatorKind {
265 // Note that additions to this should also update the StmtVisitor class.
266 UO_PostInc, UO_PostDec, // [C99 6.5.2.4] Postfix increment and decrement
267 UO_PreInc, UO_PreDec, // [C99 6.5.3.1] Prefix increment and decrement
268 UO_AddrOf, UO_Deref, // [C99 6.5.3.2] Address and indirection
269 UO_Plus, UO_Minus, // [C99 6.5.3.3] Unary arithmetic
270 UO_Not, UO_LNot, // [C99 6.5.3.3] Unary arithmetic
271 UO_Real, UO_Imag, // "__real expr"/"__imag expr" Extension.
272 UO_Extension // __extension__ marker.