Mercurial > hg > orthanc
view Core/Lua/LuaFunctionCall.cpp @ 1789:bdcc1dba4a53 worklists
optimization
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Wed, 18 Nov 2015 16:38:08 +0100 |
parents | 54bafe0e7e7b |
children | b1291df2f780 |
line wrap: on
line source
/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * * 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 3 of the * License, or (at your option) any later version. * * In addition, as a special exception, the copyright holders of this * program give permission to link the code of its release with the * OpenSSL project's "OpenSSL" library (or with modified versions of it * that use the same license as the "OpenSSL" library), and distribute * the linked executables. You must obey the GNU General Public License * in all respects for all of the code used other than "OpenSSL". If you * modify file(s) with this exception, you may extend this exception to * your version of the file(s), but you are not obligated to do so. If * you do not wish to do so, delete this exception statement from your * version. If you delete this exception statement from all source files * in the program, then also delete it here. * * 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, see <http://www.gnu.org/licenses/>. **/ #include "../PrecompiledHeaders.h" #include "LuaFunctionCall.h" #include "../OrthancException.h" #include "../Logging.h" #include <cassert> #include <stdio.h> #include <boost/lexical_cast.hpp> namespace Orthanc { void LuaFunctionCall::CheckAlreadyExecuted() { if (isExecuted_) { throw OrthancException(ErrorCode_LuaAlreadyExecuted); } } LuaFunctionCall::LuaFunctionCall(LuaContext& context, const char* functionName) : context_(context), isExecuted_(false) { // Clear the stack to fulfill the invariant lua_settop(context_.lua_, 0); lua_getglobal(context_.lua_, functionName); } void LuaFunctionCall::PushString(const std::string& value) { CheckAlreadyExecuted(); lua_pushlstring(context_.lua_, value.c_str(), value.size()); } void LuaFunctionCall::PushBoolean(bool value) { CheckAlreadyExecuted(); lua_pushboolean(context_.lua_, value); } void LuaFunctionCall::PushInteger(int value) { CheckAlreadyExecuted(); lua_pushinteger(context_.lua_, value); } void LuaFunctionCall::PushDouble(double value) { CheckAlreadyExecuted(); lua_pushnumber(context_.lua_, value); } void LuaFunctionCall::PushJson(const Json::Value& value) { CheckAlreadyExecuted(); context_.PushJson(value); } void LuaFunctionCall::ExecuteInternal(int numOutputs) { CheckAlreadyExecuted(); assert(lua_gettop(context_.lua_) >= 1); int nargs = lua_gettop(context_.lua_) - 1; int error = lua_pcall(context_.lua_, nargs, numOutputs, 0); if (error) { assert(lua_gettop(context_.lua_) >= 1); std::string description(lua_tostring(context_.lua_, -1)); lua_pop(context_.lua_, 1); /* pop error message from the stack */ LOG(ERROR) << description; throw OrthancException(ErrorCode_CannotExecuteLua); } if (lua_gettop(context_.lua_) < numOutputs) { throw OrthancException(ErrorCode_LuaBadOutput); } isExecuted_ = true; } bool LuaFunctionCall::ExecutePredicate() { ExecuteInternal(1); if (!lua_isboolean(context_.lua_, 1)) { throw OrthancException(ErrorCode_NotLuaPredicate); } return lua_toboolean(context_.lua_, 1) != 0; } void LuaFunctionCall::ExecuteToJson(Json::Value& result, bool keepStrings) { ExecuteInternal(1); context_.GetJson(result, lua_gettop(context_.lua_), keepStrings); } void LuaFunctionCall::ExecuteToString(std::string& result) { ExecuteInternal(1); int top = lua_gettop(context_.lua_); if (lua_isstring(context_.lua_, top)) { result = lua_tostring(context_.lua_, top); } else { throw OrthancException(ErrorCode_LuaReturnsNoString); } } }