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SaveAndRestore: fix coding style and Doxygenify comments 

llvm-svn: 205959
This commit is contained in:
Dmitri Gribenko 2014-04-10 09:44:32 +00:00
parent 79baa21242
commit 2a59e327f0
1 changed files with 25 additions and 23 deletions
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48
llvm/include/llvm/Support/SaveAndRestore.h
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@ -6,10 +6,11 @@
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides utility classes that uses RAII to save and restore
// values.
//
///
/// \file
/// This file provides utility classes that use RAII to save and restore
/// values.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_SAVEANDRESTORE_H
@ -17,31 +18,32 @@
namespace llvm {
// SaveAndRestore - A utility class that uses RAII to save and restore
// the value of a variable.
template<typename T>
struct SaveAndRestore {
SaveAndRestore(T& x) : X(x), old_value(x) {}
SaveAndRestore(T& x, const T &new_value) : X(x), old_value(x) {
X = new_value;
/// A utility class that uses RAII to save and restore the value of a variable.
template <typename T> struct SaveAndRestore {
SaveAndRestore(T &X) : X(X), OldValue(X) {}
SaveAndRestore(T &X, const T &NewValue) : X(X), OldValue(X) {
X = NewValue;
}
~SaveAndRestore() { X = old_value; }
T get() { return old_value; }
~SaveAndRestore() { X = OldValue; }
T get() { return OldValue; }
private:
T& X;
T old_value;
T &X;
T OldValue;
};
// SaveOr - Similar to SaveAndRestore. Operates only on bools; the old
// value of a variable is saved, and during the dstor the old value is
// or'ed with the new value.
/// Similar to \c SaveAndRestore. Operates only on bools; the old value of a
/// variable is saved, and during the dstor the old value is or'ed with the new
/// value.
struct SaveOr {
SaveOr(bool& x) : X(x), old_value(x) { x = false; }
~SaveOr() { X |= old_value; }
SaveOr(bool &X) : X(X), OldValue(X) { X = false; }
~SaveOr() { X |= OldValue; }
private:
bool& X;
const bool old_value;
bool &X;
const bool OldValue;
};
}
} // namespace llvm
#endif