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Rename DIExpressionIterator to DIExpression::iterator.

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Addresses review feedback from Duncan.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226835 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl
2015-01-22 16:55:20 +00:00
parent ebc4de2cba
commit 71676d492a
4 changed files with 54 additions and 57 deletions
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97
include/llvm/IR/DebugInfo.h
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@@ -850,8 +850,6 @@ public:
void printExtendedName(raw_ostream &OS) const;
};
class DIExpressionIterator;
/// \brief A complex location expression.
class DIExpression : public DIDescriptor {
friend class DIDescriptor;
@@ -881,56 +879,55 @@ public:
/// \brief Return the size of this piece in bytes.
uint64_t getPieceSize() const;
DIExpressionIterator begin() const;
DIExpressionIterator end() const;
};
/// \brief An iterator for DIExpression elments.
class DIExpressionIterator
: public std::iterator<std::forward_iterator_tag, StringRef, unsigned,
const uint64_t *, uint64_t> {
DIHeaderFieldIterator I;
DIExpressionIterator(DIHeaderFieldIterator I) : I(I) {}
public:
DIExpressionIterator() {}
DIExpressionIterator(const DIExpression &Expr) : I(++Expr.header_begin()) {}
uint64_t operator*() const { return I.getNumber<uint64_t>(); }
DIExpressionIterator &operator++() {
increment();
return *this;
}
DIExpressionIterator operator++(int) {
DIExpressionIterator X(*this);
increment();
return X;
}
bool operator==(const DIExpressionIterator &X) const {
return I == X.I;
}
bool operator!=(const DIExpressionIterator &X) const {
return !(*this == X);
}
uint64_t getArg(unsigned N) const {
auto In = I;
std::advance(In, N);
return In.getNumber<uint64_t>();
}
const DIHeaderFieldIterator& getBase() const { return I; }
private:
void increment() {
switch (**this) {
case dwarf::DW_OP_piece: std::advance(I, 3); break;
case dwarf::DW_OP_plus: std::advance(I, 2); break;
case dwarf::DW_OP_deref: std::advance(I, 1); break;
default:
assert("unsupported operand");
/// \brief An iterator for DIExpression elements.
class iterator
: public std::iterator<std::forward_iterator_tag, StringRef, unsigned,
const uint64_t *, uint64_t> {
DIHeaderFieldIterator I;
iterator(DIHeaderFieldIterator I) : I(I) {}
public:
iterator() {}
iterator(const DIExpression &Expr) : I(++Expr.header_begin()) {}
uint64_t operator*() const { return I.getNumber<uint64_t>(); }
iterator &operator++() {
increment();
return *this;
}
}
};
iterator operator++(int) {
iterator X(*this);
increment();
return X;
}
bool operator==(const iterator &X) const {
return I == X.I;
}
bool operator!=(const iterator &X) const {
return !(*this == X);
}
uint64_t getArg(unsigned N) const {
auto In = I;
std::advance(In, N);
return In.getNumber<uint64_t>();
}
const DIHeaderFieldIterator& getBase() const { return I; }
private:
void increment() {
switch (**this) {
case dwarf::DW_OP_piece: std::advance(I, 3); break;
case dwarf::DW_OP_plus: std::advance(I, 2); break;
case dwarf::DW_OP_deref: std::advance(I, 1); break;
default:
assert("unsupported operand");
}
}
};
iterator begin() const;
iterator end() const;
};
/// \brief This object holds location information.
///