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source: orxonox.OLD/branches/new_class_id/src/lib/util/loading/load_param.cc @ 9859

Last change on this file since 9859 was 9859, checked in by bensch, 18 years ago

new_class_id: segfault-prevention in the PNode deletion process (not the nicest way, but it works)
This was with me for 3 months now…

File size: 3.3 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: Benjamin Grauer
13   co-programmer: ...
14*/
15
16#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_LOADING
17
18#include "load_param.h"
19#include "load_param_class_description.h"
20#include "compiler.h"
21#include "debug.h"
22/**
23 * @brief Constructs a new LoadParameter
24 * @param root the XML-element to load this Parameter from
25 * @param paramName the Parameter to load
26 * @param inLoadCycle If we are in a LoadCycle (loading differs.).
27 */
28LoadParamBase::LoadParamBase(const TiXmlElement* root, const std::string& paramName, bool inLoadCycle)
29    :  paramName(paramName), inLoadCycle(inLoadCycle)
30{
31  // determin the LoadString.
32  if (likely(!inLoadCycle))
33    this->loadElem = grabParameterElement(root, paramName);
34  else if (paramName == root->Value())
35    this->loadElem = (TiXmlElement*)root->FirstChild();
36  else
37    this->loadElem = NULL;
38}
39
40
41/**
42 * @param classID the ID of the class. This is needed to identify into what class this Parameter belongs.
43 * @param descriptionText The text to set as a description for this Parameter
44 * @returns a pointer to itself.
45 */
46void LoadParamBase::describe(const ClassID& classID, const std::string& descriptionText)
47{
48  PRINTF(5)("Describing Class '%s'(id:%d) Parameter '%s': description '%s'\n",
49            classID.name().c_str(), classID.id(), paramName.c_str(), descriptionText.c_str());
50
51  if (LoadParamClassDescription::descriptionsCaptured())
52    LoadParamClassDescription::describeClass(classID, paramName, descriptionText);
53}
54
55/**
56 * @brief sets the Values of the Description to a usefull text.
57 */
58void LoadParamBase::setDescriptionValues(const ClassID& classID, unsigned int paramCount, const MultiType* const defaultValues, bool retVal)
59{
60  if(LoadParamClassDescription::descriptionsCaptured())
61    LoadParamClassDescription::setValuesOf(classID, paramName, paramCount, defaultValues, retVal);
62}
63
64
65//////////////////////
66// HELPER FUNCTIONS //
67//////////////////////
68/**
69 * @param root: The XML-element to grab a parameter from
70 * @param parameterName: the parameter to grab
71 * @returns the Value of the parameter if found, NULL otherwise
72*/
73std::string LoadParamBase::grabParameter(const TiXmlElement* root, const std::string& parameterName)
74{
75  const TiXmlElement* const element = grabParameterElement(root, parameterName);
76  if (element != NULL)
77    return element->Value();
78  else
79  {
80    static std::string empty("");
81    return empty;
82  }
83}
84
85/**
86 * @param root: The XML-element to grab a parameter from
87 * @param parameterName: the parameter to grab
88 * @returns the Element of the parameter if found, NULL otherwise
89 */
90const TiXmlElement* LoadParamBase::grabParameterElement(const TiXmlElement* root, const std::string& parameterName)
91{
92  const TiXmlElement* element;
93  const TiXmlNode* node;
94
95  if (root == NULL)
96    return NULL;
97
98  element = root->FirstChildElement( parameterName);
99  if( element == NULL) return NULL;
100
101  node = element->FirstChild();
102  while( node != NULL)
103  {
104    if( node->ToText()) return (TiXmlElement*)node;
105    node = node->NextSibling();
106  }
107  return NULL;
108}
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