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expr_iterator: use a std::deque to implement the stack #2250

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Merged
merged 1 commit into from
May 29, 2018
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expr_iterator: use a std::deque to implement the stack #2250

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5 changes: 3 additions & 2 deletions src/util/expr_iterator.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
#ifndef CPROVER_UTIL_EXPR_ITERATOR_H
#define CPROVER_UTIL_EXPR_ITERATOR_H

#include <deque>
#include <iterator>
#include <functional>
#include <set>
Expand Down Expand Up @@ -39,7 +40,7 @@ class const_unique_depth_iteratort;
/// Helper class for depth_iterator_baset
struct depth_iterator_expr_statet final
{
typedef std::vector<exprt>::const_iterator operands_iteratort;
typedef exprt::operandst::const_iterator operands_iteratort;
inline depth_iterator_expr_statet(
const exprt &expr,
operands_iteratort it,
Expand Down Expand Up @@ -213,7 +214,7 @@ class depth_iterator_baset
}

private:
std::vector<depth_iterator_expr_statet> m_stack;
std::deque<depth_iterator_expr_statet> m_stack;

depth_iterator_t &downcast()
{ return static_cast<depth_iterator_t &>(*this); }
Expand Down