TypeNodes.def revision 54e14c4db764c0636160d26c5bbf491637c83a76 
1//===-- TypeNodes.def - Metadata about Type AST nodes -----------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//  This file defines the AST type info database. Each type node is
11//  enumerated by providing its name (e.g., "Builtin" or "Enum") and
12//  base class (e.g., "Type" or "TagType"). Depending on where in the
13//  abstract syntax tree the type will show up, the enumeration uses
14//  one of four different macros:
15//
16//    TYPE(Class, Base) - A type that can show up anywhere in the AST,
17//    and might be dependent, canonical, or non-canonical. All clients
18//    will need to understand these types.
19//
20//    ABSTRACT_TYPE(Class, Base) - An abstract class that shows up in
21//    the type hierarchy but has no concrete instances.
22//
23//    NON_CANONICAL_TYPE(Class, Base) - A type that can show up
24//    anywhere in the AST but will never be a part of a canonical
25//    type. Clients that only need to deal with canonical types
26//    (ignoring, e.g., typedefs and other type alises used for
27//    pretty-printing) can ignore these types.
28//
29//    DEPENDENT_TYPE(Class, Base) - A type that will only show up
30//    within a C++ template that has not been instantiated, e.g., a
31//    type that is always dependent. Clients that do not need to deal
32//    with uninstantiated C++ templates can ignore these types.
33//
34//  There is a fifth macro, independent of the others.  Most clients
35//  will not need to use it.
36//
37//    LEAF_TYPE(Class) - A type that never has inner types.  Clients
38//    which can operate on such types more efficiently may wish to do so.
39//
40//===----------------------------------------------------------------------===//
41
42#ifndef ABSTRACT_TYPE
43#  define ABSTRACT_TYPE(Class, Base) TYPE(Class, Base)
44#endif
45
46#ifndef NON_CANONICAL_TYPE
47#  define NON_CANONICAL_TYPE(Class, Base) TYPE(Class, Base)
48#endif
49
50#ifndef DEPENDENT_TYPE
51#  define DEPENDENT_TYPE(Class, Base) TYPE(Class, Base)
52#endif
53
54TYPE(Builtin, Type)
55TYPE(FixedWidthInt, Type)
56TYPE(Complex, Type)
57TYPE(Pointer, Type)
58TYPE(BlockPointer, Type)
59ABSTRACT_TYPE(Reference, Type)
60TYPE(LValueReference, ReferenceType)
61TYPE(RValueReference, ReferenceType)
62TYPE(MemberPointer, Type)
63ABSTRACT_TYPE(Array, Type)
64TYPE(ConstantArray, ArrayType)
65TYPE(IncompleteArray, ArrayType)
66TYPE(VariableArray, ArrayType)
67DEPENDENT_TYPE(DependentSizedArray, ArrayType)
68DEPENDENT_TYPE(DependentSizedExtVector, Type)
69TYPE(Vector, Type)
70TYPE(ExtVector, VectorType)
71ABSTRACT_TYPE(Function, Type)
72TYPE(FunctionProto, FunctionType)
73TYPE(FunctionNoProto, FunctionType)
74NON_CANONICAL_TYPE(Typedef, Type)
75NON_CANONICAL_TYPE(TypeOfExpr, Type)
76NON_CANONICAL_TYPE(TypeOf, Type)
77NON_CANONICAL_TYPE(Decltype, Type)
78ABSTRACT_TYPE(Tag, Type)
79TYPE(Record, TagType)
80TYPE(Enum, TagType)
81NON_CANONICAL_TYPE(Elaborated, Type)
82DEPENDENT_TYPE(TemplateTypeParm, Type)
83NON_CANONICAL_TYPE(SubstTemplateTypeParm, Type)
84TYPE(TemplateSpecialization, Type)
85NON_CANONICAL_TYPE(QualifiedName, Type)
86DEPENDENT_TYPE(Typename, Type)
87TYPE(ObjCInterface, Type)
88TYPE(ObjCObjectPointer, Type)
89
90// These types are always leaves in the type hierarchy.
91#ifdef LEAF_TYPE
92LEAF_TYPE(Enum)
93LEAF_TYPE(Builtin)
94LEAF_TYPE(FixedWidthInt)
95LEAF_TYPE(ObjCInterface)
96LEAF_TYPE(TemplateTypeParm)
97#undef LEAF_TYPE
98#endif
99
100#undef DEPENDENT_TYPE
101#undef NON_CANONICAL_TYPE
102#undef ABSTRACT_TYPE
103#undef TYPE
104