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annotate libinterp/parse-tree/pt-arg-list.cc @ 15195:2fc554ffbc28

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split libinterp from src * libinterp: New directory. Move all files from src directory here except Makefile.am, main.cc, main-cli.cc, mkoctfile.in.cc, mkoctfilr.in.sh, octave-config.in.cc, octave-config.in.sh. * libinterp/Makefile.am: New file, extracted from src/Makefile.am. * src/Makefile.am: Delete everything except targets and definitions needed to build and link main and utility programs. * Makefile.am (SUBDIRS): Include libinterp in the list. * autogen.sh: Run config-module.sh in libinterp/dldfcn directory, not src/dldfcn directory. * configure.ac (AC_CONFIG_SRCDIR): Use libinterp/octave.cc, not src/octave.cc. (DL_LDFLAGS, LIBOCTINTERP): Use libinterp, not src. (AC_CONFIG_FILES): Include libinterp/Makefile in the list. * find-docstring-files.sh: Look in libinterp, not src. * gui/src/Makefile.am (liboctgui_la_CPPFLAGS): Find header files in libinterp, not src.
author John W. Eaton <jwe@octave.org>
date Sat, 18 Aug 2012 16:23:39 -0400
parents src/parse-tree/pt-arg-list.cc@46b19589b593
children 3389152014ca
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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72c96de7a403 maint: update copyright notices for 2012
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3 Copyright (C) 1996-2012 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <iostream>
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28 #include <string>
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29
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30 #include "str-vec.h"
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31
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32 #include "defun.h"
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33 #include "error.h"
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34 #include "oct-lvalue.h"
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35 #include "oct-obj.h"
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36 #include "ov.h"
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37 #include "ov-usr-fcn.h"
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38 #include "parse.h"
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39 #include "pt-arg-list.h"
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40 #include "pt-exp.h"
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41 #include "pt-id.h"
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42 #include "pt-pr-code.h"
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43 #include "pt-walk.h"
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44 #include "toplev.h"
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45 #include "unwind-prot.h"
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46
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47 // Argument lists.
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48
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49 tree_argument_list::~tree_argument_list (void)
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50 {
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51 while (! empty ())
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52 {
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53 iterator p = begin ();
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54 delete *p;
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55 erase (p);
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56 }
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57 }
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58
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59 bool
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60 tree_argument_list::has_magic_end (void) const
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61 {
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62 for (const_iterator p = begin (); p != end (); p++)
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63 {
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64 tree_expression *elt = *p;
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65
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66 if (elt && elt->has_magic_end ())
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67 return true;
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68 }
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69
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70 return false;
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71 }
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72
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73 void
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74 tree_argument_list::append (const element_type& s)
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75 {
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76 octave_base_list<tree_expression *>::append (s);
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77
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78 if (! list_includes_magic_end && s && s->has_magic_end ())
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79 list_includes_magic_end = true;
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80
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81 if (! list_includes_magic_tilde && s && s->is_identifier ())
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82 {
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83 tree_identifier *id = dynamic_cast<tree_identifier *> (s);
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84 list_includes_magic_tilde = id && id->is_black_hole ();
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85 }
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86 }
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87
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88 bool
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89 tree_argument_list::all_elements_are_constant (void) const
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90 {
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91 for (const_iterator p = begin (); p != end (); p++)
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92 {
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93 tree_expression *elt = *p;
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94
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95 if (! elt->is_constant ())
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96 return false;
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97 }
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98
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99 return true;
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100 }
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101
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102 static const octave_value *indexed_object = 0;
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103 static int index_position = 0;
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104 static int num_indices = 0;
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105
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106 DEFCONSTFUN (__end__, , ,
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107 "internal function")
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108 {
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109 octave_value retval;
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110
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111 if (indexed_object)
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112 {
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113 if (indexed_object->is_object ())
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114 {
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115 octave_value_list args;
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116
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117 args(2) = num_indices;
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118 args(1) = index_position + 1;
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119 args(0) = *indexed_object;
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120
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121 std::string class_name = indexed_object->class_name ();
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122
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123 octave_value meth = symbol_table::find_method ("end", class_name);
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124
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125 if (meth.is_defined ())
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126 return feval (meth.function_value (), args, 1);
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127 }
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128
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129 dim_vector dv = indexed_object->dims ();
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130 int ndims = dv.length ();
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131
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132 if (num_indices < ndims)
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133 {
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134 for (int i = num_indices; i < ndims; i++)
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135 dv(num_indices-1) *= dv(i);
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136
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137 if (num_indices == 1)
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138 {
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139 ndims = 2;
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140 dv.resize (ndims);
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141 dv(1) = 1;
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142 }
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143 else
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144 {
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145 ndims = num_indices;
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146 dv.resize (ndims);
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147 }
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148 }
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149
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150 if (index_position < ndims)
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151 retval = dv(index_position);
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152 else
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153 retval = 1;
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154 }
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155 else
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156 ::error ("invalid use of end");
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157
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158 return retval;
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159 }
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160
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161 octave_value_list
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162 tree_argument_list::convert_to_const_vector (const octave_value *object)
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163 {
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164 // END doesn't make sense for functions. Maybe we need a different
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165 // way of asking an octave_value object this question?
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166
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167 bool stash_object = (list_includes_magic_end
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168 && object
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169 && ! (object->is_function ()
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170 || object->is_function_handle ()));
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171
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172 unwind_protect frame;
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173
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174 if (stash_object)
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175 {
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176 frame.protect_var (indexed_object);
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177
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178 indexed_object = object;
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179 }
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180
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181 int len = length ();
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182
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183 std::list<octave_value_list> args;
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184
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185 iterator p = begin ();
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186 for (int k = 0; k < len; k++)
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187 {
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188 if (stash_object)
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189 {
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190 frame.protect_var (index_position);
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191 frame.protect_var (num_indices);
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192
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193 index_position = k;
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194 num_indices = len;
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195 }
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196
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197 tree_expression *elt = *p++;
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198
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199 if (elt)
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200 {
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201 octave_value tmp = elt->rvalue1 ();
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202
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203 if (error_state)
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204 {
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205 ::error ("evaluating argument list element number %d", k+1);
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206 args.clear ();
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207 break;
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208 }
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209 else
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210 {
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211 if (tmp.is_cs_list ())
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212 args.push_back (tmp.list_value ());
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213 else if (tmp.is_defined ())
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214 args.push_back (tmp);
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215 }
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216 }
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217 else
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218 {
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219 args.push_back (octave_value ());
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220 break;
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221 }
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222 }
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223
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224 return args;
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225 }
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226
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227 std::list<octave_lvalue>
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228 tree_argument_list::lvalue_list (void)
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229 {
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230 std::list<octave_lvalue> retval;
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diff changeset
231
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232 for (tree_argument_list::iterator p = begin ();
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233 p != end ();
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234 p++)
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235 {
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diff changeset
236 tree_expression *elt = *p;
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237
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238 retval.push_back (elt->lvalue ());
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239 }
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240
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241 return retval;
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242 }
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243
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244 string_vector
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245 tree_argument_list::get_arg_names (void) const
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246 {
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247 int len = length ();
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248
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diff changeset
249 string_vector retval (len);
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250
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251 int k = 0;
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252
4219
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diff changeset
253 for (const_iterator p = begin (); p != end (); p++)
2982
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diff changeset
254 {
4219
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diff changeset
255 tree_expression *elt = *p;
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diff changeset
256
2991
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diff changeset
257 retval(k++) = elt->str_print_code ();
2982
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diff changeset
258 }
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diff changeset
259
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diff changeset
260 return retval;
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diff changeset
261 }
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262
5861
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diff changeset
263 tree_argument_list *
7767
71f068b22fcc scope and context fixes for function handles
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diff changeset
264 tree_argument_list::dup (symbol_table::scope_id scope,
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diff changeset
265 symbol_table::context_id context) const
5861
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diff changeset
266 {
2a6cb4ed8f1e [project @ 2006-06-16 05:09:41 by jwe]
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diff changeset
267 tree_argument_list *new_list = new tree_argument_list ();
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diff changeset
268
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diff changeset
269 new_list->list_includes_magic_end = list_includes_magic_end;
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270 new_list->simple_assign_lhs = simple_assign_lhs;
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diff changeset
271
8913
35cd375d4bb3 make tree::dup functions const
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diff changeset
272 for (const_iterator p = begin (); p != end (); p++)
5861
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diff changeset
273 {
8913
35cd375d4bb3 make tree::dup functions const
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diff changeset
274 const tree_expression *elt = *p;
5861
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275
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276 new_list->append (elt ? elt->dup (scope, context) : 0);
5861
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277 }
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278
2a6cb4ed8f1e [project @ 2006-06-16 05:09:41 by jwe]
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diff changeset
279 return new_list;
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280 }
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diff changeset
281
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282 void
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283 tree_argument_list::accept (tree_walker& tw)
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diff changeset
284 {
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diff changeset
285 tw.visit_argument_list (*this);
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286 }