z3-z3-4.12.6.src.math.lp.incremental_vector.h Maven / Gradle / Ivy
/*++
Copyright (c) 2017 Microsoft Corporation
Module Name:
Abstract:
Author:
Lev Nachmanson (levnach)
Revision History:
--*/
#pragma once
#include "util/vector.h"
namespace lp {
template class incremental_vector {
vector m_stack_of_vector_sizes;
vector m_vector;
public:
const B & operator[](unsigned a) const {
return m_vector[a];
}
unsigned size() const {
return m_vector.size();
}
void push_scope() {
m_stack_of_vector_sizes.push_back(m_vector.size());
}
void pop_scope() {
pop_scope(1);
}
template
void pop_tail(vector & v, unsigned k) {
lp_assert(v.size() >= k);
v.shrink(v.size() - k);
}
template
void resize(vector & v, unsigned new_size) {
v.resize(new_size);
}
void pop_scope(unsigned k) {
lp_assert(m_stack_of_vector_sizes.size() >= k);
lp_assert(k > 0);
m_vector.shrink(peek_size(k));
unsigned new_st_size = m_stack_of_vector_sizes.size() - k;
m_stack_of_vector_sizes.shrink(new_st_size);
}
void push_back(const B & b) {
m_vector.push_back(b);
}
unsigned peek_size(unsigned k) const {
lp_assert(k > 0 && k <= m_stack_of_vector_sizes.size());
return m_stack_of_vector_sizes[m_stack_of_vector_sizes.size() - k];
}
};
}