Mercurial > flash_v2
annotate host/libcdl/component.cxx @ 1723:0cc13d07a67e
* src/flash.c: Support flash blocks of arbitary size. The
DataFlash devices for example have block of 528 bytes.
| author | asl |
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| date | Thu, 09 Sep 2004 13:11:46 +0000 |
| parents | fbfd52cf7976 |
| children |
| rev | line source |
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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 // component.cxx |
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6 // |
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7 // Implementation of the CdlComponent 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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343
fbfd52cf7976
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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(CdlComponentBody); |
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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 CdlComponentBody::CdlComponentBody(std::string name_arg) |
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74 : CdlNodeBody(name_arg), |
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75 CdlContainerBody(), |
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76 CdlUserVisibleBody(), |
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77 CdlValuableBody(), |
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78 CdlParentableBody(), |
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79 CdlBuildableBody(), |
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80 CdlDefinableBody() |
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81 { |
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82 CYG_REPORT_FUNCNAME("CdlComponentBody:: constructor"); |
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83 CYG_REPORT_FUNCARG1XV(this); |
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84 |
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85 cdlcomponentbody_cookie = CdlComponentBody_Magic; |
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86 CYGDBG_MEMLEAK_CONSTRUCTOR(); |
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87 |
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88 CYG_POSTCONDITION_THISC(); |
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89 CYG_REPORT_RETURN(); |
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90 } |
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91 |
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92 //}}} |
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93 //{{{ Destructor |
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94 |
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95 // ---------------------------------------------------------------------------- |
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96 |
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97 CdlComponentBody::~CdlComponentBody() |
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98 { |
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99 CYG_REPORT_FUNCNAME("CdlComponentBody:: destructor"); |
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100 CYG_REPORT_FUNCARG1XV(this); |
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101 CYG_PRECONDITION_THISC(); |
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102 |
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103 cdlcomponentbody_cookie = CdlComponentBody_Invalid; |
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104 CYGDBG_MEMLEAK_DESTRUCTOR(); |
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105 |
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106 CYG_REPORT_RETURN(); |
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107 } |
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108 |
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109 //}}} |
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110 //{{{ parse_component() |
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111 |
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112 // ---------------------------------------------------------------------------- |
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113 // Parsing a component definition. This routine gets invoked directly from the |
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114 // Tcl interpreter. |
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115 |
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116 int |
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117 CdlComponentBody::parse_component(CdlInterpreter interp, int argc, const char* argv[]) |
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118 { |
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119 CYG_REPORT_FUNCNAMETYPE("CdlComponentBody::parse_component", "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 component 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 CdlComponent new_component = 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 options. This may change in future. |
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146 if (3 != argc) { |
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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."); |
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150 ok = false; |
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151 goto done; |
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152 } |
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153 if (!Tcl_CommandComplete(CDL_TCL_CONST_CAST(char*, argv[2]))) { |
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154 CdlParse::report_error(interp, "", |
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155 std::string("Invalid property list for cdl_component `") + argv[1] + "'."); |
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156 ok = false; |
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157 goto done; |
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158 } |
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159 |
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160 if (0 != toplevel->lookup(argv[1])) { |
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161 CdlParse::report_error(interp, "", |
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162 std::string("Component `") + argv[1] + |
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163 "' cannot be loaded.\nThe name is already in use."); |
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164 ok = false; |
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165 } else { |
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166 new_component = new CdlComponentBody(argv[1]); |
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167 toplevel->add_node(package, parent, new_component); |
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168 } |
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169 |
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170 done: |
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171 if (!ok) { |
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172 // Just because this component cannot be created, that is no |
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173 // reason to abort the whole parsing process. |
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174 CYG_REPORT_RETVAL(TCL_OK); |
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175 return TCL_OK; |
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176 } |
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177 } catch(std::bad_alloc e) { |
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178 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Out of memory")); |
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179 result = TCL_ERROR; |
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180 } catch(CdlParseException e) { |
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181 interp->set_result(e.get_message()); |
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182 result = TCL_ERROR; |
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183 } catch(...) { |
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184 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Unexpected C++ exception")); |
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185 result = TCL_ERROR; |
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186 } |
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187 if (TCL_OK != result) { |
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188 CYG_REPORT_RETVAL(result); |
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189 return result; |
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190 } |
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191 |
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192 // At this stage new_component has been created and added to the hierarchy. |
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193 // The main work now is to add the properties. |
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194 |
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195 // Push the component as the current node early on. This aids |
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196 // diagnostics. Also make it the new container. |
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197 CdlNode old_node = interp->push_node(new_component); |
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198 CdlContainer old_container = interp->push_container(new_component); |
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199 std::string old_context; |
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200 CYG_ASSERTC(parent == old_container); |
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201 |
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202 // Declare these outside the scope of the try statement, to allow |
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203 // goto calls for the error handling. |
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204 std::string tcl_result; |
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205 std::vector<CdlInterpreterCommandEntry> new_commands; |
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206 std::vector<CdlInterpreterCommandEntry>* old_commands = 0; |
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207 static CdlInterpreterCommandEntry commands[] = |
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208 { |
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209 CdlInterpreterCommandEntry("script", &CdlComponentBody::parse_script ), |
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210 CdlInterpreterCommandEntry("cdl_component", &CdlComponentBody::parse_component ), |
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211 CdlInterpreterCommandEntry("cdl_option", &CdlOptionBody::parse_option ), |
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212 CdlInterpreterCommandEntry("cdl_interface", &CdlInterfaceBody::parse_interface ), |
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213 CdlInterpreterCommandEntry("cdl_dialog", &CdlDialogBody::parse_dialog ), |
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214 CdlInterpreterCommandEntry("cdl_wizard", &CdlWizardBody::parse_wizard ), |
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215 CdlInterpreterCommandEntry("", 0 ) |
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216 }; |
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217 static CdlInterpreterCommandEntry script_commands[] = |
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218 { |
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219 CdlInterpreterCommandEntry("cdl_component", &CdlComponentBody::parse_component ), |
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220 CdlInterpreterCommandEntry("cdl_option", &CdlOptionBody::parse_option ), |
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221 CdlInterpreterCommandEntry("cdl_interface", &CdlInterfaceBody::parse_interface ), |
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222 CdlInterpreterCommandEntry("cdl_dialog", &CdlDialogBody::parse_dialog ), |
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223 CdlInterpreterCommandEntry("cdl_wizard", &CdlWizardBody::parse_wizard ), |
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224 CdlInterpreterCommandEntry("", 0 ), |
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225 }; |
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226 int i; |
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227 |
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228 // All parsing errors may result in an exception, under the control of |
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229 // application code. This exception must not pass through the Tcl interpreter. |
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230 try { |
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231 |
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232 for (i = 0; 0 != commands[i].command; i++) { |
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233 new_commands.push_back(commands[i]); |
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234 } |
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235 CdlBuildableBody::add_property_parsers(new_commands); |
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236 CdlDefinableBody::add_property_parsers(new_commands); |
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237 CdlParentableBody::add_property_parsers(new_commands); |
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238 CdlValuableBody::add_property_parsers(new_commands); |
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239 CdlUserVisibleBody::add_property_parsers(new_commands); |
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240 CdlNodeBody::add_property_parsers(new_commands); |
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241 |
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242 // Now evaluate the body. If an error occurs then typically |
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243 // this will be reported via CdlParse::report_error(), |
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244 // but any exceptions will have been intercepted and |
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245 // turned into a Tcl error. |
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246 old_commands = interp->push_commands(new_commands); |
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247 result = interp->eval(argv[2], tcl_result); |
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248 interp->pop_commands(old_commands); |
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249 |
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250 if (TCL_OK != result) { |
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251 // No point in taking any further action, just go with the flow |
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252 goto done2; |
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253 } |
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254 |
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255 // Even if there were errors, they were not fatal. There may |
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256 // now be a number of properties for this component, and some |
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257 // validation should take place. Start with the base classes. |
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258 new_component->CdlNodeBody::check_properties(interp); |
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259 new_component->CdlUserVisibleBody::check_properties(interp); |
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260 new_component->CdlValuableBody::check_properties(interp); |
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261 new_component->CdlParentableBody::check_properties(interp); |
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262 new_component->CdlBuildableBody::check_properties(interp); |
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263 new_component->CdlDefinableBody::check_properties(interp); |
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264 |
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265 // There should be at most one each of wizard and script. |
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266 if (new_component->count_properties(CdlPropertyId_Wizard) > 1) { |
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267 CdlParse::report_error(interp, "", "A component should have at most one `wizard' property."); |
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268 } |
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269 if (new_component->count_properties(CdlPropertyId_Script) > 1) { |
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270 CdlParse::report_error(interp, "", "A component should have at most one `script' property."); |
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271 } |
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272 |
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273 // If there is a script property, life gets more interesting. |
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274 if (new_component->has_property(CdlPropertyId_Script)) { |
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275 CdlProperty_String prop = dynamic_cast<CdlProperty_String>(new_component->get_property(CdlPropertyId_Script)); |
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276 CYG_PRECONDITION_CLASSC(prop); |
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277 std::string script_name = prop->get_string(); |
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278 |
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279 // Try to locate this script. |
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280 std::string script_filename = package->find_absolute_file(script_name, "cdl", false); |
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281 if ("" == script_filename) { |
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282 CdlParse::report_error(interp, "", "Unable to find script `" + script_name + "'."); |
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283 } else { |
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284 // The script exists, so we need to try and execute it. |
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285 // The current container is still set correctly, but we need |
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286 // to change the filename and install a different set |
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287 // of commands. |
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288 old_context = interp->push_context(script_filename); |
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289 new_commands.clear(); |
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290 for (i = 0; 0 != script_commands[i].command; i++) { |
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291 new_commands.push_back(script_commands[i]); |
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292 } |
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293 old_commands = interp->push_commands(new_commands); |
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294 result = interp->eval_file(script_filename, tcl_result); |
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295 interp->pop_commands(old_commands); |
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296 interp->pop_context(old_context); |
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297 } |
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298 } |
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299 |
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300 done2: |
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301 // Dummy command just to keep the compiler happy |
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302 old_context = ""; |
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303 |
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304 } catch (std::bad_alloc e) { |
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305 // Errors at this stage should be reported via Tcl, not via C++. |
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306 // However there is no point in continuing with the parsing operation, |
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307 // just give up. |
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308 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Out of memory")); |
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309 result = TCL_ERROR; |
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310 } catch (CdlParseException e) { |
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311 interp->set_result(e.get_message()); |
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312 result = TCL_ERROR; |
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313 } catch(...) { |
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314 interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Unexpected C++ exception")); |
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315 result = TCL_ERROR; |
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316 } |
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317 |
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318 // Restore the interpreter to its prior state. |
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319 interp->pop_node(old_node); |
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320 interp->pop_container(old_container); |
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321 if (0 != old_commands) { |
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322 interp->pop_commands(old_commands); |
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323 } |
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324 |
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325 CYG_REPORT_RETVAL(result); |
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326 return result; |
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327 } |
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328 |
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329 |
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330 // ---------------------------------------------------------------------------- |
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331 // Syntax: script <filename> |
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332 int |
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343
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333 CdlComponentBody::parse_script(CdlInterpreter interp, int argc, const char* argv[]) |
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334 { |
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335 CYG_REPORT_FUNCNAMETYPE("parse_script", "result %d"); |
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336 |
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337 int result = CdlParse::parse_string_property(interp, argc, argv, CdlPropertyId_Script, 0, 0); |
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338 |
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339 CYG_REPORT_RETVAL(result); |
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340 return result; |
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341 } |
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342 |
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343 //}}} |
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344 //{{{ Propagation support |
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345 |
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346 // ---------------------------------------------------------------------------- |
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347 void |
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348 CdlComponentBody::update(CdlTransaction transaction, CdlUpdate update) |
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349 { |
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350 CYG_REPORT_FUNCNAME("CdlComponent::update"); |
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351 |
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352 this->CdlValuableBody::update(transaction, update); |
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353 this->CdlContainerBody::update(transaction, update); |
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354 |
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355 CYG_REPORT_RETURN(); |
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356 } |
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357 |
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358 //}}} |
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359 //{{{ Persistence support |
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360 |
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361 // ---------------------------------------------------------------------------- |
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362 void |
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363 CdlComponentBody::initialize_savefile_support(CdlToplevel toplevel) |
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364 { |
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365 CYG_REPORT_FUNCNAME("CdlComponent::initialize_savefile_support"); |
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366 |
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367 toplevel->add_savefile_command("cdl_component", 0, &savefile_component_command); |
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368 CdlValuableBody::initialize_savefile_support(toplevel, "cdl_component"); |
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369 |
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370 CYG_REPORT_RETURN(); |
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371 } |
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372 |
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373 void |
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374 CdlComponentBody::save(CdlInterpreter interp, Tcl_Channel chan, int indentation, bool minimal) |
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375 { |
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376 CYG_REPORT_FUNCNAME("CdlComponent::save"); |
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377 CYG_REPORT_FUNCARG5XV(this, interp, chan, indentation, minimal); |
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378 CYG_PRECONDITION_THISC(); |
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379 CYG_PRECONDITION_CLASSC(interp); |
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380 |
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381 if (!minimal || this->has_additional_savefile_information() || this->value_savefile_entry_needed()) { |
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382 // Start with the UserVisible data, which will result in a suitable set |
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383 // of comments before the package definition itself. |
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384 this->CdlUserVisibleBody::save(interp, chan, indentation, minimal); |
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385 |
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386 // Now output the line "cdl_component <name> {" |
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387 // The name is guaranteed to be a valid C preprocessor symbol, so it |
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388 // is not going to need any quoting. |
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389 std::string data = std::string(indentation, ' ') + "cdl_component " + get_name() + " {\n"; |
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390 interp->write_data(chan, data); |
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391 |
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392 // Deal with the value |
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393 bool modifiable = !(CdlValueFlavor_None == this->get_flavor()) && |
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394 !this->has_property(CdlPropertyId_Calculated); |
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395 this->CdlValuableBody::save(interp, chan, indentation + 4, modifiable, minimal); |
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396 |
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397 // And with any unrecognised data |
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398 this->CdlNodeBody::save(interp, chan, indentation + 4, minimal); |
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399 |
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400 // Close the cdl_component body. A blank line is added here. |
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401 interp->write_data(chan, "};\n\n"); |
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402 } |
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403 |
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404 // Packages are containers, so dump the contents as well. |
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405 this->CdlContainerBody::save(interp, chan, indentation, minimal); |
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406 |
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407 CYG_REPORT_RETURN(); |
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408 } |
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409 |
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410 int |
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343
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411 CdlComponentBody::savefile_component_command(CdlInterpreter interp, int argc, const char* argv[]) |
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412 { |
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413 CYG_REPORT_FUNCNAMETYPE("CdlComponent::savefile_component_command", "result %d"); |
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414 CYG_PRECONDITION_CLASSC(interp); |
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415 |
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416 int result = TCL_OK; |
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417 CdlToplevel toplevel = interp->get_toplevel(); |
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418 CYG_ASSERT_CLASSC(toplevel); |
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419 CdlConfiguration config = dynamic_cast<CdlConfiguration>(toplevel); |
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420 CYG_ASSERT_CLASSC(config); |
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421 |
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422 std::vector<CdlInterpreterCommandEntry> subcommands; |
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423 std::vector<CdlInterpreterCommandEntry>* toplevel_commands = 0; |
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424 CdlNode old_node = 0; |
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425 |
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426 try { |
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427 |
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428 if (3 != argc) { |
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429 CdlParse::report_error(interp, "", "Invalid cdl_component command in savefile, expecting two arguments."); |
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430 } else { |
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431 |
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432 CdlNode current_node = config->lookup(argv[1]); |
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433 if (0 == current_node) { |
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434 // FIXME: save value in limbo |
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435 CdlParse::report_error(interp, "", |
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76
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436 std::string("The savefile contains a cdl_component command for an unknown component `") |
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437 + argv[1] + "'"); |
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438 } else { |
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439 config->get_savefile_subcommands("cdl_component", subcommands); |
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440 toplevel_commands = interp->push_commands(subcommands); |
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441 old_node = interp->push_node(current_node); |
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442 |
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443 std::string tcl_result; |
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444 result = interp->eval(argv[2], tcl_result); |
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445 |
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446 interp->pop_commands(toplevel_commands); |
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447 toplevel_commands = 0; |
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448 interp->pop_node(old_node); |
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449 old_node = 0; |
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450 } |
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451 } |
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452 } catch(...) { |
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453 if (0 != old_node) { |
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454 interp->pop_node(old_node); |
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455 } |
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456 if (0 != toplevel_commands) { |
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457 interp->pop_commands(toplevel_commands); |
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458 } |
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459 throw; |
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460 } |
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461 |
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462 CYG_REPORT_RETVAL(result); |
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463 return result; |
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464 } |
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465 |
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466 //}}} |
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467 //{{{ check_this() |
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468 |
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469 // ---------------------------------------------------------------------------- |
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470 |
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471 bool |
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472 CdlComponentBody::check_this(cyg_assert_class_zeal zeal) const |
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473 { |
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474 if (CdlComponentBody_Magic != cdlcomponentbody_cookie) { |
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475 return false; |
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476 } |
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477 CYGDBG_MEMLEAK_CHECKTHIS(); |
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478 |
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479 return CdlNodeBody::check_this(zeal) && |
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480 CdlContainerBody::check_this(zeal) && |
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481 CdlUserVisibleBody::check_this(zeal) && |
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482 CdlParentableBody::check_this(zeal) && |
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483 CdlValuableBody::check_this(zeal) && |
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484 CdlBuildableBody::check_this(zeal) && |
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485 CdlDefinableBody::check_this(zeal); |
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486 } |
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487 |
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488 //}}} |
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489 //{{{ Misc |
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490 |
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491 // ---------------------------------------------------------------------------- |
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492 |
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493 std::string |
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494 CdlComponentBody::get_class_name() const |
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495 { |
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496 CYG_REPORT_FUNCNAME("CdlComponent::get_class_name"); |
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497 CYG_PRECONDITION_THISC(); |
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498 CYG_REPORT_RETURN(); |
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499 return "component"; |
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500 } |
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501 |
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502 //}}} |