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new heap invariants

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Chuyue Sun 2024-07-19 09:14:05 +00:00
parent 08b6338061
commit 99b2e481c2
1 changed files with 13 additions and 0 deletions
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13
src/util/heap.h
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@ -55,6 +55,19 @@ class heap : private LT {
}
bool check_invariant_core(int idx) const {
// Check that m_values starts with a dummy value at index 0.
if (m_values.empty() || m_values[0] != -1) {
return false;
}
// All indices in m_value2indices that are not used in m_values should be 0
for (int val = 0; val < static_cast<int>(m_value2indices.size()); ++val) {
if (std::find(m_values.begin(), m_values.end(), val) == m_values.end() && m_value2indices[val] != 0) {
return false; // Unused indices should have a 0 value
}
}
if (idx < static_cast<int>(m_values.size())) {
SASSERT(m_value2indices[m_values[idx]] == idx);
SASSERT(parent(idx) == 0 || !less_than(m_values[idx], m_values[parent(idx)]));