65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
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//===- SMLoc.h - Source location for use with diagnostics -------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the SMLoc class. This class encapsulates a location in
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// source code for use in diagnostics.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_SMLOC_H
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#define LLVM_SUPPORT_SMLOC_H
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#include "llvm/ADT/None.h"
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#include <cassert>
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namespace llvm {
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/// Represents a location in source code.
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class SMLoc {
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const char *Ptr = nullptr;
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public:
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SMLoc() = default;
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bool isValid() const { return Ptr != nullptr; }
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bool operator==(const SMLoc &RHS) const { return RHS.Ptr == Ptr; }
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bool operator!=(const SMLoc &RHS) const { return RHS.Ptr != Ptr; }
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const char *getPointer() const { return Ptr; }
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static SMLoc getFromPointer(const char *Ptr) {
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SMLoc L;
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L.Ptr = Ptr;
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return L;
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}
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};
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/// Represents a range in source code.
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///
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/// SMRange is implemented using a half-open range, as is the convention in C++.
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/// In the string "abc", the range [1,3) represents the substring "bc", and the
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/// range [2,2) represents an empty range between the characters "b" and "c".
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class SMRange {
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public:
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SMLoc Start, End;
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SMRange() = default;
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SMRange(NoneType) {}
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SMRange(SMLoc St, SMLoc En) : Start(St), End(En) {
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assert(Start.isValid() == End.isValid() &&
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"Start and End should either both be valid or both be invalid!");
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}
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bool isValid() const { return Start.isValid(); }
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};
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} // end namespace llvm
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#endif // LLVM_SUPPORT_SMLOC_H
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