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/*
SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org>
SPDX-FileCopyrightText: 2018 Christoph Cullmann <cullmann@kde.org>
SPDX-License-Identifier: MIT
*/
#include "state.h"
#include "state_p.h"
#include "context_p.h"
#include <QStringList>
using namespace KSyntaxHighlighting;
StateData *StateData::get(State &state)
{
// create state data on demand, to make default state construction cheap
if (!state.d) {
state.d = new StateData();
} else {
state.d.detach();
}
return state.d.data();
}
bool StateData::isEmpty() const
{
return m_contextStack.isEmpty();
}
void StateData::clear()
{
m_contextStack.clear();
}
int StateData::size() const
{
return m_contextStack.size();
}
void StateData::push(Context *context, const QStringList &captures)
{
Q_ASSERT(context);
m_contextStack.push_back(qMakePair(context, captures));
}
bool StateData::pop(int popCount)
{
// nop if nothing to pop
if (popCount <= 0) {
return true;
}
// keep the initial context alive in any case
Q_ASSERT(!isEmpty());
const bool initialContextSurvived = m_contextStack.size() > popCount;
m_contextStack.resize(std::max(1, int(m_contextStack.size()) - popCount));
return initialContextSurvived;
}
Context *StateData::topContext() const
{
Q_ASSERT(!isEmpty());
return m_contextStack.last().first;
}
const QStringList &StateData::topCaptures() const
{
Q_ASSERT(!isEmpty());
return m_contextStack.last().second;
}
State::State()
{
}
State::State(const State &other)
: d(other.d)
{
}
State::~State()
{
}
State &State::operator=(const State &other)
{
d = other.d;
return *this;
}
bool State::operator==(const State &other) const
{
// use pointer equal as shortcut for shared states
return (d == other.d) || (d && other.d && d->m_contextStack == other.d->m_contextStack && d->m_defId == other.d->m_defId);
}
bool State::operator!=(const State &other) const
{
return !(*this == other);
}
bool State::indentationBasedFoldingEnabled() const
{
if (!d || d->m_contextStack.isEmpty()) {
return false;
}
return d->m_contextStack.last().first->indentationBasedFoldingEnabled();
}
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