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annotate host/libcdl/option.cxx @ 343:fbfd52cf7976

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Try to resolve problems caused by API changes in Tcl 8.4, related to the use of const
author bartv
date Sat, 21 Sep 2002 22:05:08 +0000
parents 6ed91473a1cd
children 33cc410733a0
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1 //{{{ Banner
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2
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3 //============================================================================
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4 //
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5 // option.cxx
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6 //
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7 // Implementation of the CdlOption class
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8 //
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9 //============================================================================
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10 //####COPYRIGHTBEGIN####
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11 //
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12 // ----------------------------------------------------------------------------
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13 // Copyright (C) 2002 Bart Veer
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14 // Copyright (C) 1999, 2000 Red Hat, Inc.
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15 //
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16 // This file is part of the eCos host tools.
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17 //
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18 // This program is free software; you can redistribute it and/or modify it
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19 // under the terms of the GNU General Public License as published by the Free
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20 // Software Foundation; either version 2 of the License, or (at your option)
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21 // any later version.
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22 //
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23 // This program is distributed in the hope that it will be useful, but WITHOUT
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24 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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25 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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26 // more details.
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27 //
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28 // You should have received a copy of the GNU General Public License along with
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29 // this program; if not, write to the Free Software Foundation, Inc.,
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30 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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31 //
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32 // ----------------------------------------------------------------------------
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33 //
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34 //####COPYRIGHTEND####
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35 //============================================================================
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36 //#####DESCRIPTIONBEGIN####
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37 //
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38 // Author(s): bartv
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39 // Contact(s): bartv
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40 // Date: 1999/03/01
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41 // Version: 0.02
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42 //
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43 //####DESCRIPTIONEND####
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44 //============================================================================
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45
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46 //}}}
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47 //{{{ #include's
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48
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49 // ----------------------------------------------------------------------------
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50 #include "cdlconfig.h"
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51
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52 // Get the infrastructure types, assertions, tracing and similar
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53 // facilities.
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54 #include <cyg/infra/cyg_ass.h>
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55 #include <cyg/infra/cyg_trac.h>
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56
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57 // <cdl.hxx> defines everything implemented in this module.
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58 // It implicitly supplies <string>, <vector> and <map> because
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59 // the class definitions rely on these headers.
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60 #include <cdl.hxx>
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61
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62 //}}}
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63
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64 //{{{ Statics
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65
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66 // ----------------------------------------------------------------------------
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67 CYGDBG_DEFINE_MEMLEAK_COUNTER(CdlOptionBody);
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68
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69 //}}}
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70 //{{{ Constructor
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71
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72 // ----------------------------------------------------------------------------
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73 CdlOptionBody::CdlOptionBody(std::string name_arg)
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74 : CdlNodeBody(name_arg),
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75 CdlUserVisibleBody(),
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76 CdlValuableBody(),
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77 CdlParentableBody(),
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78 CdlBuildableBody(),
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79 CdlDefinableBody()
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80 {
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81 CYG_REPORT_FUNCNAME("CdlOptionBody:: constructor");
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82 CYG_REPORT_FUNCARG1XV(this);
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83
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84 cdloptionbody_cookie = CdlOptionBody_Magic;
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85 CYGDBG_MEMLEAK_CONSTRUCTOR();
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86
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87 CYG_POSTCONDITION_THISC();
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88 CYG_REPORT_RETURN();
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89 }
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90
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91 //}}}
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92 //{{{ Destructor
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93
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94 // ----------------------------------------------------------------------------
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95
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96 CdlOptionBody::~CdlOptionBody()
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97 {
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98 CYG_REPORT_FUNCNAME("CdlOptionBody:: destructor");
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99 CYG_REPORT_FUNCARG1XV(this);
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100 CYG_PRECONDITION_THISC();
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101
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102 cdloptionbody_cookie = CdlOptionBody_Invalid;
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103 CYGDBG_MEMLEAK_DESTRUCTOR();
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104
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105 CYG_REPORT_RETURN();
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106 }
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107
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108 //}}}
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109 //{{{ parse_option()
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110
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111 // ----------------------------------------------------------------------------
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112 // Parsing an option definition. This is basically the same as
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113 // CdlComponent::parse_component(), but simpler: an option is not
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114 // a container, and the only non-standard property is "parent".
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115
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116 int
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117 CdlOptionBody::parse_option(CdlInterpreter interp, int argc, const char* argv[])
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118 {
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119 CYG_REPORT_FUNCNAMETYPE("CdlOptionBody::parse_option", "result %d");
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120 CYG_REPORT_FUNCARG1("argc %d", argc);
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121 CYG_PRECONDITION_CLASSC(interp);
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122
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123 std::string diag_argv0 = CdlParse::get_tcl_cmd_name(argv[0]);
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124
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125 CdlLoadable loadable = interp->get_loadable();
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126 CdlPackage package = dynamic_cast<CdlPackage>(loadable);
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127 CdlContainer parent = interp->get_container();
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128 CdlToplevel toplevel = interp->get_toplevel();
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129 CYG_ASSERT_CLASSC(loadable); // There should always be a loadable during parsing
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130 CYG_ASSERT_CLASSC(package); // And packages are the only loadable for software CDL
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131 CYG_ASSERT_CLASSC(parent);
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132 CYG_ASSERT_CLASSC(toplevel);
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133
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134 // The new option should be created and added to the package
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135 // early on. If there is a parsing error it will get cleaned up
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136 // automatically as a consequence of the package destructor.
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137 // However it is necessary to validate the name first. Errors
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138 // should be reported via CdlParse::report_error(),
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139 // which may result in an exception.
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140 CdlOption new_option = 0;
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141 bool ok = true;
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142 int result = TCL_OK;
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143 try {
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144
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145 // Currently there are no command-line options. This may change in future.
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146 if (3 != argc) {
82
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147 CdlParse::report_error(interp, "",
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148 std::string("Incorrect number of arguments to `") + diag_argv0 +
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149 "'\nExpecting name and properties list.");
76
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150 ok = false;
343
fbfd52cf7976 Try to resolve problems caused by API changes in Tcl 8.4, related to
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151 } else if (!Tcl_CommandComplete(CDL_TCL_CONST_CAST(char*, argv[2]))) {
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152 CdlParse::report_error(interp, "",
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153 std::string("Invalid property list for cdl_option `") + argv[1] + "'.");
76
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154 ok = false;
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155 } else if (0 != toplevel->lookup(argv[1])) {
82
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156 CdlParse::report_error(interp, "",
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157 std::string("Option `") + argv[1] + "' cannot be loaded.\nThe name is already in use.");
76
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158 ok = false;
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159 } else {
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160 new_option = new CdlOptionBody(argv[1]);
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161 toplevel->add_node(package, parent, new_option);
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162 }
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163
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164 if (!ok) {
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165 // Just because this component cannot be created, that is no
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166 // reason to abort the whole parsing process.
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167 CYG_REPORT_RETVAL(TCL_OK);
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168 return TCL_OK;
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169 }
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170 } catch(std::bad_alloc e) {
82
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171 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Out of memory"));
76
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172 result = TCL_ERROR;
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173 } catch(CdlParseException e) {
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174 interp->set_result(e.get_message());
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175 result = TCL_ERROR;
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176 } catch(...) {
82
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177 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Unexpected C++ exception"));
76
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178 result = TCL_ERROR;
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179 }
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180 if (TCL_OK != result) {
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181 CYG_REPORT_RETVAL(result);
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182 return result;
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183 }
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184
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185 // At this stage new_option has been created and added to the hierarchy.
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186 // The main work now is to add the properties.
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187
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188 // Push the option as the current node early on. This aids
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189 // diagnostics.
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190 CdlNode old_node = interp->push_node(new_option);
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191
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192 // Declare these outside the scope of the try statement, to allow
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193 // goto calls for the error handling.
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194 std::string tcl_result;
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195 std::vector<CdlInterpreterCommandEntry> new_commands;
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196 std::vector<CdlInterpreterCommandEntry>* old_commands = 0;
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197 static CdlInterpreterCommandEntry commands[] =
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198 {
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199 CdlInterpreterCommandEntry("", 0 )
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200 };
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201 int i;
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202
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203 // All parsing errors may result in an exception, under the control of
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204 // application code. This exception must not pass through the Tcl interpreter.
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205 try {
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206
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207 for (i = 0; 0 != commands[i].command; i++) {
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208 new_commands.push_back(commands[i]);
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209 }
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210 CdlDefinableBody::add_property_parsers(new_commands);
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211 CdlBuildableBody::add_property_parsers(new_commands);
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212 CdlParentableBody::add_property_parsers(new_commands);
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213 CdlValuableBody::add_property_parsers(new_commands);
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214 CdlUserVisibleBody::add_property_parsers(new_commands);
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215 CdlNodeBody::add_property_parsers(new_commands);
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216
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217 // Now evaluate the body. If an error occurs then typically
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218 // this will be reported via CdlParse::report_error(),
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219 // but any exceptions will have been intercepted and
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220 // turned into a Tcl error.
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221 old_commands = interp->push_commands(new_commands);
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222 result = interp->eval(argv[2], tcl_result);
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223 interp->pop_commands(old_commands);
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224
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225 if (TCL_OK == result) {
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226 // Even if there were errors, they were not fatal. There may
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227 // now be a number of properties for this option, and some
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228 // validation should take place. Start with the base classes.
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229 new_option->CdlNodeBody::check_properties(interp);
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230 new_option->CdlUserVisibleBody::check_properties(interp);
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231 new_option->CdlValuableBody::check_properties(interp);
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232 new_option->CdlParentableBody::check_properties(interp);
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233 new_option->CdlBuildableBody::check_properties(interp);
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234 new_option->CdlDefinableBody::check_properties(interp);
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235 }
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236
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237 } catch (std::bad_alloc e) {
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238 // Errors at this stage should be reported via Tcl, not via C++.
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239 // However there is no point in continuing with the parsing operation,
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240 // just give up.
82
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241 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Out of memory"));
76
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242 result = TCL_ERROR;
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243 } catch (CdlParseException e) {
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244 interp->set_result(e.get_message());
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245 result = TCL_ERROR;
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246 } catch(...) {
82
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247 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Unexpected C++ exception"));
76
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248 result = TCL_ERROR;
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249 }
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250
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251 // Restore the interpreter to its prior state.
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252 interp->pop_node(old_node);
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253 if (0 != old_commands) {
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254 interp->pop_commands(old_commands);
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255 }
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256
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257 CYG_REPORT_RETVAL(result);
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258 return result;
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259 }
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260
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261 //}}}
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262 //{{{ Persistence support
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263
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264 // ----------------------------------------------------------------------------
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265 void
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266 CdlOptionBody::initialize_savefile_support(CdlToplevel toplevel)
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267 {
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268 CYG_REPORT_FUNCNAME("CdlOption::initialize_savefile_support");
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269
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270 toplevel->add_savefile_command("cdl_option", 0, &savefile_option_command);
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271 CdlValuableBody::initialize_savefile_support(toplevel, "cdl_option");
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272
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273 CYG_REPORT_RETURN();
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274 }
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275
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276 void
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277 CdlOptionBody::save(CdlInterpreter interp, Tcl_Channel chan, int indentation, bool minimal)
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278 {
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279 CYG_REPORT_FUNCNAME("CdlOption::save");
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280 CYG_REPORT_FUNCARG5XV(this, interp, chan, indentation, minimal);
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281 CYG_PRECONDITION_THISC();
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282 CYG_PRECONDITION_CLASSC(interp);
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283
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284 if (!minimal || this->has_additional_savefile_information() || this->value_savefile_entry_needed()) {
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285 // Start with the UserVisible data, which will result in a suitable set
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286 // of comments before the package definition itself.
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287 this->CdlUserVisibleBody::save(interp, chan, indentation, minimal);
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288
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289 // Now output the line "cdl_option <name> {"
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290 // The name is guaranteed to be a valid C preprocessor symbol, so it
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291 // is not going to need any quoting.
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292 std::string data = std::string(indentation, ' ') + "cdl_option " + get_name() + " {\n";
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293 interp->write_data(chan, data);
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294
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295 // Deal with the value
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296 bool modifiable = !(CdlValueFlavor_None == this->get_flavor()) &&
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297 !this->has_property(CdlPropertyId_Calculated);
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298 this->CdlValuableBody::save(interp, chan, indentation + 4, modifiable, minimal);
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299
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300 // And with any unrecognised data
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301 this->CdlNodeBody::save(interp, chan, indentation + 4, minimal);
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302
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303 // Close the cdl_option body. A blank line is added here.
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304 interp->write_data(chan, "};\n\n");
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305 }
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306
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307 CYG_REPORT_RETURN();
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308 }
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309
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310 int
343
fbfd52cf7976 Try to resolve problems caused by API changes in Tcl 8.4, related to
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diff changeset
311 CdlOptionBody::savefile_option_command(CdlInterpreter interp, int argc, const char* argv[])
76
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312 {
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313 CYG_REPORT_FUNCNAMETYPE("CdlOption::savefile_option_command", "result %d");
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314 CYG_PRECONDITION_CLASSC(interp);
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315
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316 int result = TCL_OK;
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317 CdlToplevel toplevel = interp->get_toplevel();
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318 CYG_ASSERT_CLASSC(toplevel);
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319 CdlConfiguration config = dynamic_cast<CdlConfiguration>(toplevel);
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320 CYG_ASSERT_CLASSC(config);
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321
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322 std::vector<CdlInterpreterCommandEntry> subcommands;
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323 std::vector<CdlInterpreterCommandEntry>* toplevel_commands = 0;
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324 CdlNode old_node = 0;
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325
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326 try {
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327
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328 if (3 != argc) {
82
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329 CdlParse::report_error(interp, "", "Invalid cdl_option command in savefile, expecting two arguments.");
76
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330 } else {
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331
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332 CdlNode current_node = config->lookup(argv[1]);
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333 if (0 == current_node) {
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334 // FIXME: save value in limbo
82
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diff changeset
335 CdlParse::report_error(interp, "",
76
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336 std::string("The savefile contains a cdl_option for an unknown option `")
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337 + argv[1] + "'");
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338 } else {
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339 config->get_savefile_subcommands("cdl_option", subcommands);
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340 toplevel_commands = interp->push_commands(subcommands);
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341 old_node = interp->push_node(current_node);
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342
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343 std::string tcl_result;
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344 result = interp->eval(argv[2], tcl_result);
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345
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346 interp->pop_commands(toplevel_commands);
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347 toplevel_commands = 0;
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348 interp->pop_node(old_node);
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349 old_node = 0;
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350 }
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351 }
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352 } catch(...) {
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353 if (0 != old_node) {
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354 interp->pop_node(old_node);
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355 }
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356 if (0 != toplevel_commands) {
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357 interp->pop_commands(toplevel_commands);
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358 }
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359 throw;
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360 }
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361
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362 CYG_REPORT_RETVAL(result);
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363 return result;
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364 }
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365
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366 //}}}
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367 //{{{ check_this()
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368
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369 // ----------------------------------------------------------------------------
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370 bool
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371 CdlOptionBody::check_this(cyg_assert_class_zeal zeal) const
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372 {
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373 if (CdlOptionBody_Magic != cdloptionbody_cookie) {
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374 return false;
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375 }
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376 CYGDBG_MEMLEAK_CHECKTHIS();
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377
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378 return CdlNodeBody::check_this(zeal) &&
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379 CdlUserVisibleBody::check_this(zeal) &&
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380 CdlValuableBody::check_this(zeal) &&
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381 CdlParentableBody::check_this(zeal) &&
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382 CdlBuildableBody::check_this(zeal) &&
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383 CdlDefinableBody::check_this(zeal);
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384 }
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385
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386 //}}}
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387 //{{{ misc
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388
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389 // ----------------------------------------------------------------------------
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390
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391 std::string
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392 CdlOptionBody::get_class_name() const
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393 {
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394 CYG_REPORT_FUNCNAME("CdlOption::get_class_name");
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395 CYG_PRECONDITION_THISC();
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396 CYG_REPORT_RETURN();
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397 return "option";
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398 }
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399
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400 //}}}