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/* vrepFfi.cpp -- exposing functions to V-REP
* Copyright (C) 2013 Galois, Inc.
*
* This library 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.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*
* To contact Galois, complete the Web form at <http://corp.galois.com/contact/>
* or write to Galois, Inc., 421 Southwest 6th Avenue, Suite 300, Portland,
* Oregon, 97204-1622. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <cstring>
#include <string>
#include "vrepFfi.h"
namespace vrep {
// Extracting Lua arguments from the callback structure //
LuaCall::LuaCall(SLuaCallBack *simCall)
: simCall(simCall), argIdx(0), cursorBool(simCall->inputBool),
cursorInt(simCall->inputInt), cursorFloat(simCall->inputFloat),
cursorChar(simCall->inputChar) {
}
void LuaCall::ensureNextArgType(const int expected) {
const int nextType = simCall->inputArgTypeAndSize[2 * argIdx];
if (nextType != expected) {
throw MarshalingError("unexpected Lua argument (expected type "
+ std::to_string(expected)
+ ", got type "
+ std::to_string(nextType)
+ ")");
}
}
template<>
std::string LuaCall::unsafeGetAtom() {
// Determine how long the string is. Lua uses '@' as its sentinel.
size_t len;
simChar *sentinel = std::strchr(cursorChar, '@');
if (sentinel) {
len = sentinel - cursorChar;
} else {
len = std::strlen(cursorChar);
}
// Build the 'std::string'.
const std::string result = std::string(cursorChar, len);
cursorChar += len + (sentinel ? 1 : 0);
return result;
}
}
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