/usr/include/clang/Sema/Designator.h is in libclang-dev 3.0-6ubuntu3.
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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 | //===--- Designator.h - Initialization Designator ---------------*- 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 interfaces used to represent designators (a la
// C99 designated initializers) during parsing.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_SEMA_DESIGNATOR_H
#define LLVM_CLANG_SEMA_DESIGNATOR_H
#include "clang/Basic/SourceLocation.h"
#include "llvm/ADT/SmallVector.h"
namespace clang {
class Expr;
class IdentifierInfo;
class Sema;
/// Designator - A designator in a C99 designated initializer.
///
/// This class is a discriminated union which holds the various
/// different sorts of designators possible. A Designation is an array of
/// these. An example of a designator are things like this:
/// [8] .field [47] // C99 designation: 3 designators
/// [8 ... 47] field: // GNU extensions: 2 designators
/// These occur in initializers, e.g.:
/// int a[10] = {2, 4, [8]=9, 10};
///
class Designator {
public:
enum DesignatorKind {
FieldDesignator, ArrayDesignator, ArrayRangeDesignator
};
private:
DesignatorKind Kind;
struct FieldDesignatorInfo {
const IdentifierInfo *II;
unsigned DotLoc;
unsigned NameLoc;
};
struct ArrayDesignatorInfo {
Expr *Index;
unsigned LBracketLoc;
mutable unsigned RBracketLoc;
};
struct ArrayRangeDesignatorInfo {
Expr *Start, *End;
unsigned LBracketLoc, EllipsisLoc;
mutable unsigned RBracketLoc;
};
union {
FieldDesignatorInfo FieldInfo;
ArrayDesignatorInfo ArrayInfo;
ArrayRangeDesignatorInfo ArrayRangeInfo;
};
public:
DesignatorKind getKind() const { return Kind; }
bool isFieldDesignator() const { return Kind == FieldDesignator; }
bool isArrayDesignator() const { return Kind == ArrayDesignator; }
bool isArrayRangeDesignator() const { return Kind == ArrayRangeDesignator; }
const IdentifierInfo *getField() const {
assert(isFieldDesignator() && "Invalid accessor");
return FieldInfo.II;
}
SourceLocation getDotLoc() const {
assert(isFieldDesignator() && "Invalid accessor");
return SourceLocation::getFromRawEncoding(FieldInfo.DotLoc);
}
SourceLocation getFieldLoc() const {
assert(isFieldDesignator() && "Invalid accessor");
return SourceLocation::getFromRawEncoding(FieldInfo.NameLoc);
}
Expr *getArrayIndex() const {
assert(isArrayDesignator() && "Invalid accessor");
return ArrayInfo.Index;
}
Expr *getArrayRangeStart() const {
assert(isArrayRangeDesignator() && "Invalid accessor");
return ArrayRangeInfo.Start;
}
Expr *getArrayRangeEnd() const {
assert(isArrayRangeDesignator() && "Invalid accessor");
return ArrayRangeInfo.End;
}
SourceLocation getLBracketLoc() const {
assert((isArrayDesignator() || isArrayRangeDesignator()) &&
"Invalid accessor");
if (isArrayDesignator())
return SourceLocation::getFromRawEncoding(ArrayInfo.LBracketLoc);
else
return SourceLocation::getFromRawEncoding(ArrayRangeInfo.LBracketLoc);
}
SourceLocation getRBracketLoc() const {
assert((isArrayDesignator() || isArrayRangeDesignator()) &&
"Invalid accessor");
if (isArrayDesignator())
return SourceLocation::getFromRawEncoding(ArrayInfo.RBracketLoc);
else
return SourceLocation::getFromRawEncoding(ArrayRangeInfo.RBracketLoc);
}
SourceLocation getEllipsisLoc() const {
assert(isArrayRangeDesignator() && "Invalid accessor");
return SourceLocation::getFromRawEncoding(ArrayRangeInfo.EllipsisLoc);
}
static Designator getField(const IdentifierInfo *II, SourceLocation DotLoc,
SourceLocation NameLoc) {
Designator D;
D.Kind = FieldDesignator;
D.FieldInfo.II = II;
D.FieldInfo.DotLoc = DotLoc.getRawEncoding();
D.FieldInfo.NameLoc = NameLoc.getRawEncoding();
return D;
}
static Designator getArray(Expr *Index,
SourceLocation LBracketLoc) {
Designator D;
D.Kind = ArrayDesignator;
D.ArrayInfo.Index = Index;
D.ArrayInfo.LBracketLoc = LBracketLoc.getRawEncoding();
D.ArrayInfo.RBracketLoc = 0;
return D;
}
static Designator getArrayRange(Expr *Start,
Expr *End,
SourceLocation LBracketLoc,
SourceLocation EllipsisLoc) {
Designator D;
D.Kind = ArrayRangeDesignator;
D.ArrayRangeInfo.Start = Start;
D.ArrayRangeInfo.End = End;
D.ArrayRangeInfo.LBracketLoc = LBracketLoc.getRawEncoding();
D.ArrayRangeInfo.EllipsisLoc = EllipsisLoc.getRawEncoding();
D.ArrayRangeInfo.RBracketLoc = 0;
return D;
}
void setRBracketLoc(SourceLocation RBracketLoc) const {
assert((isArrayDesignator() || isArrayRangeDesignator()) &&
"Invalid accessor");
if (isArrayDesignator())
ArrayInfo.RBracketLoc = RBracketLoc.getRawEncoding();
else
ArrayRangeInfo.RBracketLoc = RBracketLoc.getRawEncoding();
}
/// ClearExprs - Null out any expression references, which prevents
/// them from being 'delete'd later.
void ClearExprs(Sema &Actions) {}
/// FreeExprs - Release any unclaimed memory for the expressions in
/// this designator.
void FreeExprs(Sema &Actions) {}
};
/// Designation - Represent a full designation, which is a sequence of
/// designators. This class is mostly a helper for InitListDesignations.
class Designation {
/// InitIndex - The index of the initializer expression this is for. For
/// example, if the initializer were "{ A, .foo=B, C }" a Designation would
/// exist with InitIndex=1, because element #1 has a designation.
unsigned InitIndex;
/// Designators - The actual designators for this initializer.
SmallVector<Designator, 2> Designators;
Designation(unsigned Idx) : InitIndex(Idx) {}
public:
Designation() : InitIndex(4000) {}
/// AddDesignator - Add a designator to the end of this list.
void AddDesignator(Designator D) {
Designators.push_back(D);
}
bool empty() const { return Designators.empty(); }
unsigned getNumDesignators() const { return Designators.size(); }
const Designator &getDesignator(unsigned Idx) const {
assert(Idx < Designators.size());
return Designators[Idx];
}
/// ClearExprs - Null out any expression references, which prevents them from
/// being 'delete'd later.
void ClearExprs(Sema &Actions) {}
/// FreeExprs - Release any unclaimed memory for the expressions in this
/// designation.
void FreeExprs(Sema &Actions) {}
};
} // end namespace clang
#endif
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