ai_error.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD 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, version 2.
00006  * OpenTTD 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.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "../../stdafx.h"
00013 #include "ai_error.hpp"
00014 #include "../../core/bitmath_func.hpp"
00015 
00016 AIError::AIErrorMap AIError::error_map = AIError::AIErrorMap();
00017 AIError::AIErrorMapString AIError::error_map_string = AIError::AIErrorMapString();
00018 
00019 /* static */ AIErrorType AIError::GetLastError()
00020 {
00021   return AIObject::GetLastError();
00022 }
00023 
00024 /* static */ char *AIError::GetLastErrorString()
00025 {
00026   return strdup((*error_map_string.find(AIError::GetLastError())).second);
00027 }
00028 
00029 /* static */ AIErrorType AIError::StringToError(StringID internal_string_id)
00030 {
00031   uint index = GB(internal_string_id, 11, 5);
00032   switch (GB(internal_string_id, 11, 5)) {
00033     case 26: case 28: case 29: case 30: // NewGRF strings.
00034       return ERR_NEWGRF_SUPPLIED_ERROR;
00035 
00036     /* DO NOT SWAP case 14 and 4 because that will break StringToError due
00037      * to the index dependency that relies on FALL THROUGHs. */
00038     case 14: if (index < 0xE4) break; // Player name
00039     case 4:  if (index < 0xC0) break; // Town name
00040     case 15: // Custom name
00041     case 31: // Dynamic strings
00042       /* These strings are 'random' and have no meaning.
00043        * They actually shouldn't even be returned as error messages. */
00044       return ERR_UNKNOWN;
00045 
00046     default:
00047       break;
00048   }
00049 
00050   AIErrorMap::iterator it = error_map.find(internal_string_id);
00051   if (it == error_map.end()) return ERR_UNKNOWN;
00052   return (*it).second;
00053 }
00054 
00055 /* static */ void AIError::RegisterErrorMap(StringID internal_string_id, AIErrorType ai_error_msg)
00056 {
00057   error_map[internal_string_id] = ai_error_msg;
00058 }
00059 
00060 /* static */ void AIError::RegisterErrorMapString(AIErrorType ai_error_msg, const char *message)
00061 {
00062   error_map_string[ai_error_msg] = message;
00063 }
00064 
00065 /* static */ AIError::ErrorCategories AIError::GetErrorCategory()
00066 {
00067   return (AIError::ErrorCategories)(GetLastError() >> (uint)ERR_CAT_BIT_SIZE);
00068 }

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