icinga2/lib/base/array-script.cpp

250 lines
7.9 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "base/array.hpp"
#include "base/function.hpp"
#include "base/functionwrapper.hpp"
#include "base/scriptframe.hpp"
#include "base/objectlock.hpp"
#include "base/exception.hpp"
using namespace icinga;
static double ArrayLen(void)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
return self->GetLength();
}
static void ArraySet(int index, const Value& value)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
self->Set(index, value);
}
static Value ArrayGet(int index)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
return self->Get(index);
}
static void ArrayAdd(const Value& value)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
self->Add(value);
}
static void ArrayRemove(int index)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
self->Remove(index);
}
static bool ArrayContains(const Value& value)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
return self->Contains(value);
}
static void ArrayClear(void)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
self->Clear();
}
static bool ArraySortCmp(const Function::Ptr& cmp, const Value& a, const Value& b)
{
std::vector<Value> args;
args.push_back(a);
args.push_back(b);
return cmp->Invoke(args);
}
static Array::Ptr ArraySort(const std::vector<Value>& args)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
Array::Ptr arr = self->ShallowClone();
if (args.empty()) {
ObjectLock olock(arr);
std::sort(arr->Begin(), arr->End());
} else {
Function::Ptr function = args[0];
if (vframe->Sandboxed && !function->IsSideEffectFree())
BOOST_THROW_EXCEPTION(ScriptError("Sort function must be side-effect free."));
ObjectLock olock(arr);
std::sort(arr->Begin(), arr->End(), boost::bind(ArraySortCmp, args[0], _1, _2));
}
return arr;
}
static Array::Ptr ArrayShallowClone(void)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
return self->ShallowClone();
}
static Value ArrayJoin(const Value& separator)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
Value result;
bool first = true;
ObjectLock olock(self);
for (const Value& item : self) {
if (first) {
first = false;
} else {
result = result + separator;
}
result = result + item;
}
return result;
}
static Array::Ptr ArrayReverse(void)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
return self->Reverse();
}
static Array::Ptr ArrayMap(const Function::Ptr& function)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
if (vframe->Sandboxed && !function->IsSideEffectFree())
BOOST_THROW_EXCEPTION(ScriptError("Map function must be side-effect free."));
Array::Ptr result = new Array();
ObjectLock olock(self);
for (const Value& item : self) {
std::vector<Value> args;
args.push_back(item);
result->Add(function->Invoke(args));
}
return result;
}
static Value ArrayReduce(const Function::Ptr& function)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
if (vframe->Sandboxed && !function->IsSideEffectFree())
BOOST_THROW_EXCEPTION(ScriptError("Reduce function must be side-effect free."));
if (self->GetLength() == 0)
return Empty;
Value result = self->Get(0);
ObjectLock olock(self);
for (size_t i = 1; i < self->GetLength(); i++) {
std::vector<Value> args;
args.push_back(result);
args.push_back(self->Get(i));
result = function->Invoke(args);
}
return result;
}
static Array::Ptr ArrayFilter(const Function::Ptr& function)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
if (vframe->Sandboxed && !function->IsSideEffectFree())
BOOST_THROW_EXCEPTION(ScriptError("Filter function must be side-effect free."));
Array::Ptr result = new Array();
ObjectLock olock(self);
for (const Value& item : self) {
std::vector<Value> args;
args.push_back(item);
if (function->Invoke(args))
result->Add(item);
}
return result;
}
static Array::Ptr ArrayUnique(void)
{
ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);
std::set<Value> result;
ObjectLock olock(self);
for (const Value& item : self) {
result.insert(item);
}
return Array::FromSet(result);
}
Object::Ptr Array::GetPrototype(void)
{
static Dictionary::Ptr prototype;
if (!prototype) {
prototype = new Dictionary();
prototype->Set("len", new Function("Array#len", WrapFunction(ArrayLen), {}, true));
prototype->Set("set", new Function("Array#set", WrapFunction(ArraySet), { "index", "value" }));
prototype->Set("get", new Function("Array#get", WrapFunction(ArrayGet), { "index" }));
prototype->Set("add", new Function("Array#add", WrapFunction(ArrayAdd), { "value" }));
prototype->Set("remove", new Function("Array#remove", WrapFunction(ArrayRemove), { "index" }));
prototype->Set("contains", new Function("Array#contains", WrapFunction(ArrayContains), { "value" }, true));
prototype->Set("clear", new Function("Array#clear", WrapFunction(ArrayClear)));
prototype->Set("sort", new Function("Array#sort", WrapFunction(ArraySort), { "less_cmp" }, true));
prototype->Set("shallow_clone", new Function("Array#shallow_clone", WrapFunction(ArrayShallowClone), {}, true));
prototype->Set("join", new Function("Array#join", WrapFunction(ArrayJoin), { "separator" }, true));
prototype->Set("reverse", new Function("Array#reverse", WrapFunction(ArrayReverse), {}, true));
prototype->Set("map", new Function("Array#map", WrapFunction(ArrayMap), { "func" }, true));
prototype->Set("reduce", new Function("Array#reduce", WrapFunction(ArrayReduce), { "reduce" }, true));
prototype->Set("filter", new Function("Array#filter", WrapFunction(ArrayFilter), { "func" }, true));
prototype->Set("unique", new Function("Array#unique", WrapFunction(ArrayUnique), {}, true));
}
return prototype;
}