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1 /* |
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2 |
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3 Copyright (C) 2003 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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_fcn_handle_h) |
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24 #define octave_fcn_handle_h 1 |
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25 |
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26 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <iostream> |
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31 #include <string> |
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32 |
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33 #include "oct-alloc.h" |
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34 |
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35 #include "ov-base.h" |
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36 #include "ov-base-mat.h" |
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37 #include "ov-fcn.h" |
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38 #include "ov-typeinfo.h" |
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39 #include "symtab.h" |
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40 |
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41 // Function handles. |
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42 |
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43 class fcn_handle_elt |
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44 { |
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45 public: |
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46 |
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47 fcn_handle_elt (void) : fcn (0), nm ("@[]") { } |
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48 |
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49 fcn_handle_elt (octave_function *f, const std::string& n) |
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50 : fcn (f), nm (std::string ("@") + n) { } |
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51 |
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52 fcn_handle_elt (const fcn_handle_elt& fhe) |
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53 : fcn (fhe.fcn), nm (fhe.nm) { } |
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54 |
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55 fcn_handle_elt& operator = (const fcn_handle_elt& fhe) |
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56 { |
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57 if (this != &fhe) |
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58 { |
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59 fcn = fhe.fcn; |
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60 nm = fhe.nm; |
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61 } |
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62 |
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63 return *this; |
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64 } |
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65 |
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66 ~fcn_handle_elt (void) { } |
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67 |
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68 octave_function *function_value (void) { return fcn; } |
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69 |
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70 std::string name (void) const { return nm; } |
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71 |
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72 private: |
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73 |
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74 // The function we are handling. |
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75 octave_function *fcn; |
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76 |
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77 // The name of the handle, including the "@". |
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78 std::string nm; |
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79 }; |
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80 |
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81 class fcn_handle_array : public ArrayN<fcn_handle_elt> |
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82 { |
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83 public: |
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84 |
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85 fcn_handle_array (void) : ArrayN<fcn_handle_elt> () { } |
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86 |
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87 fcn_handle_array (const dim_vector& dv, |
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88 const fcn_handle_elt& val = resize_fill_value ()) |
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89 : ArrayN<fcn_handle_elt> (dv, val) { } |
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90 |
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91 fcn_handle_array (octave_function *f, const std::string& nm) |
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92 : ArrayN<fcn_handle_elt> (dim_vector (1, 1), fcn_handle_elt (f, nm)) { } |
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93 |
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94 fcn_handle_array (const ArrayN<fcn_handle_elt>& fa) |
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95 : ArrayN<fcn_handle_elt> (fa) { } |
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96 |
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97 fcn_handle_array (const fcn_handle_array& fa) |
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98 : ArrayN<fcn_handle_elt> (fa) { } |
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99 |
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100 ~fcn_handle_array (void) { } |
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101 |
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102 fcn_handle_array& operator = (const fcn_handle_array& fa) |
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103 { |
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104 if (this != &fa) |
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105 ArrayN<fcn_handle_elt>::operator = (fa); |
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106 |
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107 return *this; |
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108 } |
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109 |
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110 fcn_handle_array squeeze (void) const |
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111 { return ArrayN<fcn_handle_elt>::squeeze (); } |
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112 |
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113 boolNDArray all (int dim = -1) const; |
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114 boolNDArray any (int dim = -1) const; |
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115 |
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116 ArrayN<std::string> names (void) const; |
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117 |
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118 static int compute_index (Array<int>& ra_idx, |
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119 const dim_vector& dimensions); |
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120 |
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121 static fcn_handle_elt resize_fill_value (void) |
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122 { |
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123 static fcn_handle_elt nil_handle = fcn_handle_elt (); |
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124 return nil_handle; |
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125 } |
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126 }; |
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127 |
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128 class |
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129 octave_fcn_handle : public octave_base_matrix<fcn_handle_array> |
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130 { |
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131 public: |
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132 |
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133 octave_fcn_handle (void) |
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134 : octave_base_matrix<fcn_handle_array> () { } |
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135 |
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136 octave_fcn_handle (octave_function *f, const std::string& n) |
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137 : octave_base_matrix<fcn_handle_array> |
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138 (fcn_handle_array (dim_vector (1, 1), fcn_handle_elt (f, n))) { } |
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139 |
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140 octave_fcn_handle (const fcn_handle_array& fha) |
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141 : octave_base_matrix<fcn_handle_array> (fha) { } |
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142 |
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143 octave_fcn_handle (const octave_fcn_handle& fh) |
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144 : octave_base_matrix<fcn_handle_array> (fh) { } |
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145 |
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146 ~octave_fcn_handle (void) { } |
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147 |
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148 octave_value *clone (void) const { return new octave_fcn_handle (*this); } |
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149 octave_value *empty_clone (void) const { return new octave_fcn_handle (); } |
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150 |
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151 octave_value subsref (const std::string&, |
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152 const std::list<octave_value_list>&) |
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153 { |
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154 panic_impossible (); |
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155 return octave_value (); |
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156 } |
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157 |
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158 octave_value_list subsref (const std::string& type, |
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159 const std::list<octave_value_list>& idx, |
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160 int nargout); |
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161 |
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162 bool is_matrix_type (void) const { return false; } |
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163 |
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164 bool is_numeric_type (void) const { return false; } |
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165 |
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166 bool is_constant (void) const { return false; } |
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167 |
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168 bool is_true (void) { return false; } |
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169 |
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170 bool is_function_handle (void) const { return true; } |
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171 |
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172 octave_function *function_value (bool = false); |
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173 |
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174 std::string name (void) const; |
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175 |
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176 octave_fcn_handle *fcn_handle_value (bool = false) { return this; } |
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177 |
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178 fcn_handle_array fcn_handle_array_value (void) const { return matrix; } |
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179 |
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180 ArrayN<std::string> name_array (void) const { return matrix.names (); } |
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181 |
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182 void print (std::ostream& os, bool pr_as_read_syntax = false) const; |
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183 |
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184 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; |
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185 |
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186 private: |
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187 |
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188 DECLARE_OCTAVE_ALLOCATOR |
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189 |
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190 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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191 }; |
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192 |
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193 extern octave_value make_fcn_handle (const std::string& nm); |
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194 |
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195 #endif |
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196 |
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197 /* |
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198 ;;; Local Variables: *** |
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199 ;;; mode: C++ *** |
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200 ;;; End: *** |
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201 */ |
