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63 lines
1.7 KiB
63 lines
1.7 KiB
//===- SMLoc.h - Source location for use with diagnostics -------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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 <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;
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public:
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SMLoc() : Ptr(0) {}
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bool isValid() const { return Ptr != 0; }
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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() {}
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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
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