Enrico Granata | b1fb727 | 2013-06-17 22:51:50 +0000 | [diff] [blame] | 1 | //===--------------------- Range.cpp -----------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "lldb/Utility/Range.h" |
| 11 | |
| 12 | using namespace lldb_utility; |
| 13 | |
| 14 | Range::Range (const Range& rng) : |
| 15 | m_low(rng.m_low), |
| 16 | m_high(rng.m_high) |
| 17 | { |
| 18 | InitRange(); |
| 19 | } |
| 20 | |
| 21 | Range::Range (Range::ValueType low, |
| 22 | Range::ValueType high) : |
| 23 | m_low(low), |
| 24 | m_high(high) |
| 25 | { |
| 26 | InitRange(); |
| 27 | } |
| 28 | |
| 29 | void |
| 30 | Range::InitRange () |
| 31 | { |
| 32 | if (m_low == OPEN_END) |
| 33 | { |
| 34 | if (m_high == OPEN_END) |
| 35 | m_low = 0; |
| 36 | else |
| 37 | { |
| 38 | // make an empty range |
| 39 | m_low = 1; |
| 40 | m_high = 0; |
| 41 | } |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | Range& |
| 46 | Range::operator = (const Range& rhs) |
| 47 | { |
| 48 | if (&rhs != this) |
| 49 | { |
| 50 | this->m_low = rhs.m_low; |
| 51 | this->m_high = rhs.m_high; |
| 52 | } |
| 53 | return *this; |
| 54 | } |
| 55 | |
| 56 | void |
| 57 | Range::Flip () |
| 58 | { |
| 59 | std::swap(m_high, m_low); |
| 60 | } |
| 61 | |
| 62 | void |
| 63 | Range::Intersection (const Range& other) |
| 64 | { |
| 65 | m_low = std::max(m_low,other.m_low); |
| 66 | m_high = std::min(m_high,other.m_high); |
| 67 | } |
| 68 | |
| 69 | void |
| 70 | Range::Union (const Range& other) |
| 71 | { |
| 72 | m_low = std::min(m_low,other.m_low); |
| 73 | m_high = std::max(m_high,other.m_high); |
| 74 | } |
| 75 | |
| 76 | void |
| 77 | Range::Iterate (RangeCallback callback) |
| 78 | { |
| 79 | ValueType counter = m_low; |
| 80 | while (counter <= m_high) |
| 81 | { |
| 82 | bool should_continue = callback(counter); |
| 83 | if (!should_continue) |
| 84 | return; |
| 85 | counter++; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | bool |
| 90 | Range::IsEmpty () |
| 91 | { |
| 92 | return (m_low > m_high); |
| 93 | } |
| 94 | |
| 95 | Range::ValueType |
| 96 | Range::GetSize () |
| 97 | { |
| 98 | if (m_high == OPEN_END) |
| 99 | return OPEN_END; |
| 100 | if (m_high >= m_low) |
| 101 | return m_high - m_low + 1; |
| 102 | return 0; |
| 103 | } |