mirror of
https://github.com/Icinga/icinga2.git
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143 lines
3.9 KiB
C++
143 lines
3.9 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/scriptframe.hpp"
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#include "base/scriptglobal.hpp"
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#include "base/exception.hpp"
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using namespace icinga;
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boost::thread_specific_ptr<std::stack<ScriptFrame *> > ScriptFrame::m_ScriptFrames;
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Array::Ptr ScriptFrame::m_Imports;
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INITIALIZE_ONCE_WITH_PRIORITY([]() {
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Dictionary::Ptr systemNS = new Dictionary();
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ScriptGlobal::Set("System", systemNS);
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ScriptFrame::AddImport(systemNS);
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Dictionary::Ptr typesNS = new Dictionary();
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ScriptGlobal::Set("Types", typesNS);
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ScriptFrame::AddImport(typesNS);
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Dictionary::Ptr deprecatedNS = new Dictionary();
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ScriptGlobal::Set("Deprecated", deprecatedNS);
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ScriptFrame::AddImport(deprecatedNS);
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}, 50);
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ScriptFrame::ScriptFrame(void)
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: Locals(new Dictionary()), Self(ScriptGlobal::GetGlobals()), Sandboxed(false), Depth(0)
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{
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InitializeFrame();
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}
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ScriptFrame::ScriptFrame(const Value& self)
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: Locals(new Dictionary()), Self(self), Sandboxed(false), Depth(0)
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{
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InitializeFrame();
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}
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void ScriptFrame::InitializeFrame(void)
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{
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std::stack<ScriptFrame *> *frames = m_ScriptFrames.get();
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if (frames && !frames->empty()) {
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ScriptFrame *frame = frames->top();
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Sandboxed = frame->Sandboxed;
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}
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PushFrame(this);
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}
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ScriptFrame::~ScriptFrame(void)
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{
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ScriptFrame *frame = PopFrame();
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ASSERT(frame == this);
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}
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void ScriptFrame::IncreaseStackDepth(void)
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{
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if (Depth + 1 > 300)
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BOOST_THROW_EXCEPTION(ScriptError("Stack overflow while evaluating expression: Recursion level too deep."));
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Depth++;
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}
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void ScriptFrame::DecreaseStackDepth(void)
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{
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Depth--;
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}
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ScriptFrame *ScriptFrame::GetCurrentFrame(void)
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{
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std::stack<ScriptFrame *> *frames = m_ScriptFrames.get();
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ASSERT(!frames->empty());
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return frames->top();
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}
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ScriptFrame *ScriptFrame::PopFrame(void)
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{
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std::stack<ScriptFrame *> *frames = m_ScriptFrames.get();
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ASSERT(!frames->empty());
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ScriptFrame *frame = frames->top();
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frames->pop();
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return frame;
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}
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void ScriptFrame::PushFrame(ScriptFrame *frame)
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{
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std::stack<ScriptFrame *> *frames = m_ScriptFrames.get();
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if (!frames) {
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frames = new std::stack<ScriptFrame *>();
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m_ScriptFrames.reset(frames);
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}
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if (!frames->empty()) {
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ScriptFrame *parent = frames->top();
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frame->Depth += parent->Depth;
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}
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frames->push(frame);
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}
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Array::Ptr ScriptFrame::GetImports(void)
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{
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return m_Imports;
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}
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void ScriptFrame::AddImport(const Object::Ptr& import)
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{
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Array::Ptr imports;
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if (!m_Imports)
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imports = new Array();
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else
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imports = m_Imports->ShallowClone();
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imports->Add(import);
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m_Imports = imports;
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}
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