AttributeList.cpp revision 07c4fa83db91c78c1d5638552b19e2cff344e80f 
1//===--- AttributeList.cpp --------------------------------------*- 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 AttributeList class implementation
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/Sema/AttributeList.h"
15#include "clang/Basic/IdentifierTable.h"
16#include "llvm/ADT/StringSwitch.h"
17using namespace clang;
18
19AttributeList::AttributeList(IdentifierInfo *aName, SourceLocation aLoc,
20                             IdentifierInfo *sName, SourceLocation sLoc,
21                             IdentifierInfo *pName, SourceLocation pLoc,
22                             Expr **ExprList, unsigned numArgs,
23                             AttributeList *n, bool declspec, bool cxx0x)
24  : AttrName(aName), AttrLoc(aLoc), ScopeName(sName), ScopeLoc(sLoc),
25    ParmName(pName), ParmLoc(pLoc), NumArgs(numArgs), Next(n),
26    DeclspecAttribute(declspec), CXX0XAttribute(cxx0x), Invalid(false) {
27
28  if (numArgs == 0)
29    Args = 0;
30  else {
31    Args = new Expr*[numArgs];
32    memcpy(Args, ExprList, numArgs*sizeof(Args[0]));
33  }
34}
35
36AttributeList::~AttributeList() {
37  if (Args) {
38    // FIXME: before we delete the vector, we need to make sure the Expr's
39    // have been deleted. Since ActionBase::ExprTy is "void", we are dependent
40    // on the actions module for actually freeing the memory. The specific
41    // hooks are ActOnDeclarator, ActOnTypeName, ActOnParamDeclaratorType,
42    // ParseField, ParseTag. Once these routines have freed the expression,
43    // they should zero out the Args slot (to indicate the memory has been
44    // freed). If any element of the vector is non-null, we should assert.
45    delete [] Args;
46  }
47  delete Next;
48}
49
50AttributeList::Kind AttributeList::getKind(const IdentifierInfo *Name) {
51  llvm::StringRef AttrName = Name->getName();
52
53  // Normalize the attribute name, __foo__ becomes foo.
54  if (AttrName.startswith("__") && AttrName.endswith("__"))
55    AttrName = AttrName.substr(2, AttrName.size() - 4);
56
57  return llvm::StringSwitch<AttributeList::Kind>(AttrName)
58    .Case("weak", AT_weak)
59    .Case("weakref", AT_weakref)
60    .Case("pure", AT_pure)
61    .Case("mode", AT_mode)
62    .Case("used", AT_used)
63    .Case("alias", AT_alias)
64    .Case("align", AT_aligned)
65    .Case("final", AT_final)
66    .Case("cdecl", AT_cdecl)
67    .Case("const", AT_const)
68    .Case("__const", AT_const) // some GCC headers do contain this spelling
69    .Case("blocks", AT_blocks)
70    .Case("format", AT_format)
71    .Case("hiding", AT_hiding)
72    .Case("malloc", AT_malloc)
73    .Case("packed", AT_packed)
74    .Case("unused", AT_unused)
75    .Case("aligned", AT_aligned)
76    .Case("cleanup", AT_cleanup)
77    .Case("naked", AT_naked)
78    .Case("nodebug", AT_nodebug)
79    .Case("nonnull", AT_nonnull)
80    .Case("nothrow", AT_nothrow)
81    .Case("objc_gc", AT_objc_gc)
82    .Case("regparm", AT_regparm)
83    .Case("section", AT_section)
84    .Case("stdcall", AT_stdcall)
85    .Case("annotate", AT_annotate)
86    .Case("fastcall", AT_fastcall)
87    .Case("ibaction", AT_IBAction)
88    .Case("iboutlet", AT_IBOutlet)
89    .Case("iboutletcollection", AT_IBOutletCollection)
90    .Case("noreturn", AT_noreturn)
91    .Case("noinline", AT_noinline)
92    .Case("override", AT_override)
93    .Case("sentinel", AT_sentinel)
94    .Case("NSObject", AT_nsobject)
95    .Case("dllimport", AT_dllimport)
96    .Case("dllexport", AT_dllexport)
97    .Case("may_alias", IgnoredAttribute) // FIXME: TBAA
98    .Case("base_check", AT_base_check)
99    .Case("deprecated", AT_deprecated)
100    .Case("visibility", AT_visibility)
101    .Case("destructor", AT_destructor)
102    .Case("format_arg", AT_format_arg)
103    .Case("gnu_inline", AT_gnu_inline)
104    .Case("weak_import", AT_weak_import)
105    .Case("vecreturn", AT_vecreturn)
106    .Case("vector_size", AT_vector_size)
107    .Case("constructor", AT_constructor)
108    .Case("unavailable", AT_unavailable)
109    .Case("overloadable", AT_overloadable)
110    .Case("address_space", AT_address_space)
111    .Case("always_inline", AT_always_inline)
112    .Case("returns_twice", IgnoredAttribute)
113    .Case("vec_type_hint", IgnoredAttribute)
114    .Case("objc_exception", AT_objc_exception)
115    .Case("ext_vector_type", AT_ext_vector_type)
116    .Case("transparent_union", AT_transparent_union)
117    .Case("analyzer_noreturn", AT_analyzer_noreturn)
118    .Case("warn_unused_result", AT_warn_unused_result)
119    .Case("carries_dependency", AT_carries_dependency)
120    .Case("ns_returns_not_retained", AT_ns_returns_not_retained)
121    .Case("ns_returns_retained", AT_ns_returns_retained)
122    .Case("cf_returns_not_retained", AT_cf_returns_not_retained)
123    .Case("cf_returns_retained", AT_cf_returns_retained)
124    .Case("ownership_returns", AT_ownership_returns)
125    .Case("ownership_holds", AT_ownership_holds)
126    .Case("ownership_takes", AT_ownership_takes)
127    .Case("reqd_work_group_size", AT_reqd_wg_size)
128    .Case("init_priority", AT_init_priority)
129    .Case("no_instrument_function", AT_no_instrument_function)
130    .Case("thiscall", AT_thiscall)
131    .Case("pascal", AT_pascal)
132    .Case("__cdecl", AT_cdecl)
133    .Case("__stdcall", AT_stdcall)
134    .Case("__fastcall", AT_fastcall)
135    .Case("__thiscall", AT_thiscall)
136    .Case("__pascal", AT_pascal)
137    .Default(UnknownAttribute);
138}
139