Viewing file:  SMLoc.h (1.83 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
//===- SMLoc.h - Source location for use with diagnostics -------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares the SMLoc class. This class encapsulates a location in
// source code for use in diagnostics.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_SMLOC_H
#define LLVM_SUPPORT_SMLOC_H
#include <cassert>
#include <optional>
namespace llvm {
/// Represents a location in source code.
class SMLoc {
const char *Ptr = nullptr;
public:
constexpr SMLoc() = default;
constexpr bool isValid() const { return Ptr != nullptr; }
constexpr bool operator==(const SMLoc &RHS) const { return RHS.Ptr == Ptr; }
constexpr bool operator!=(const SMLoc &RHS) const { return RHS.Ptr != Ptr; }
constexpr const char *getPointer() const { return Ptr; }
static SMLoc getFromPointer(const char *Ptr) {
SMLoc L;
L.Ptr = Ptr;
return L;
}
};
/// Represents a range in source code.
///
/// SMRange is implemented using a half-open range, as is the convention in C++.
/// In the string "abc", the range [1,3) represents the substring "bc", and the
/// range [2,2) represents an empty range between the characters "b" and "c".
class SMRange {
public:
SMLoc Start, End;
SMRange() = default;
SMRange(std::nullopt_t) {}
SMRange(SMLoc St, SMLoc En) : Start(St), End(En) {
assert(Start.isValid() == End.isValid() &&
"Start and End should either both be valid or both be invalid!");
}
bool isValid() const { return Start.isValid(); }
};
} // end namespace llvm
#endif // LLVM_SUPPORT_SMLOC_H
|