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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 (__GNUG__) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include <iostream.h> |
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32 #include <strstream.h> |
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33 |
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34 #include "defun.h" |
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35 #include "error.h" |
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36 #include "oct-obj.h" |
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37 #include "pt-arg-list.h" |
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38 #include "pt-exp.h" |
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39 #include "pt-mat.h" |
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40 #include "pt-walk.h" |
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41 #include "utils.h" |
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42 #include "ov.h" |
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43 #include "variables.h" |
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44 |
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45 // Are empty elements in a matrix list ok? For example, is the empty |
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46 // matrix in an expression like `[[], 1]' ok? A positive value means |
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47 // yes. A negative value means yes, but print a warning message. |
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48 // Zero means it should be considered an error. |
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49 static int Vempty_list_elements_ok; |
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50 |
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51 // Should `[97, 98, 99, "123"]' be a string? |
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52 static bool Vimplicit_num_to_str_ok; |
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53 |
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54 // The character to fill with when creating string arrays. |
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55 static char Vstring_fill_char; |
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56 |
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57 // General matrices. This list type is much more work to handle than |
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58 // constant matrices, but it allows us to construct matrices from |
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59 // other matrices, variables, and functions. |
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60 |
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61 // But first, some internal classes that make our job much easier. |
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62 |
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63 class |
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64 tm_row_const |
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65 { |
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66 private: |
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67 |
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68 class |
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69 tm_row_const_rep : public SLList<octave_value> |
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70 { |
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71 public: |
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72 |
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73 tm_row_const_rep (void) |
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74 : SLList<octave_value> (), count (1), nr (0), nc (0), |
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75 all_str (false), some_str (false), is_cmplx (false), |
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76 all_mt (true), ok (false) { } |
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77 |
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78 tm_row_const_rep (const tree_argument_list& row) |
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79 : SLList<octave_value> (), count (1), nr (0), nc (0), |
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80 all_str (false), some_str (false), is_cmplx (false), |
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81 all_mt (true), ok (false) |
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82 { init (row); } |
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83 |
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84 ~tm_row_const_rep (void) { } |
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85 |
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86 int count; |
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87 |
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88 int nr; |
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89 int nc; |
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90 |
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91 bool all_str; |
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92 bool some_str; |
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93 bool is_cmplx; |
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94 bool all_mt; |
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95 |
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96 bool ok; |
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97 |
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98 void init (const tree_argument_list&); |
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99 |
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100 private: |
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101 |
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102 tm_row_const_rep (const tm_row_const_rep&); |
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103 |
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104 tm_row_const_rep& operator = (const tm_row_const_rep&); |
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105 |
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106 void eval_error (const char *msg, int l, int c) const; |
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107 |
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108 void eval_warning (const char *msg, int l, int c) const; |
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109 }; |
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110 |
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111 public: |
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112 |
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113 tm_row_const (void) |
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114 : rep (0) { } |
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115 |
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116 tm_row_const (const tree_argument_list& row) |
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117 : rep (new tm_row_const_rep (row)) { } |
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118 |
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119 tm_row_const (const tm_row_const& x) |
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120 : rep (x.rep) |
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121 { |
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122 if (rep) |
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123 rep->count++; |
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124 } |
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125 |
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126 tm_row_const& operator = (const tm_row_const& x) |
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127 { |
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128 if (this != &x && rep != x.rep) |
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129 { |
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130 if (rep && --rep->count == 0) |
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131 delete rep; |
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132 |
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133 rep = x.rep; |
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134 |
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135 if (rep) |
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136 rep->count++; |
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137 } |
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138 |
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139 return *this; |
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140 } |
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141 |
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142 ~tm_row_const (void) |
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143 { |
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144 if (rep && --rep->count == 0) |
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145 delete rep; |
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146 } |
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147 |
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148 int rows (void) { return rep->nr; } |
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149 int cols (void) { return rep->nc; } |
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150 |
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151 bool all_strings_p (void) const { return rep->all_str; } |
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152 bool some_strings_p (void) const { return rep->some_str; } |
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153 bool complex_p (void) const { return rep->is_cmplx; } |
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154 bool all_empty_p (void) const { return rep->all_mt; } |
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155 |
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156 octave_value& operator () (Pix p) { return rep->operator () (p); } |
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157 |
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158 const octave_value& operator () (Pix p) const |
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159 { return rep->operator () (p); } |
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160 |
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161 Pix first (void) const { return rep->first (); } |
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162 void next (Pix& p) const { rep->next (p); } |
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163 |
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164 operator void* () const |
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165 { |
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166 return (rep && rep->ok) |
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167 ? static_cast<void *> (-1) : static_cast<void *> (0); |
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168 } |
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169 |
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170 private: |
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171 |
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172 tm_row_const_rep *rep; |
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173 }; |
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174 |
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175 void |
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176 tm_row_const::tm_row_const_rep::init (const tree_argument_list& row) |
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177 { |
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178 all_str = true; |
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179 |
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180 bool first_elem = true; |
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181 |
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182 for (Pix p = row.first (); p != 0; row.next (p)) |
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183 { |
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184 tree_expression *elt = row (p); |
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185 |
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186 octave_value tmp = elt->rvalue (); |
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187 |
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188 if (error_state || tmp.is_undefined ()) |
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189 break; |
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190 else |
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191 { |
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192 int this_elt_nr = tmp.rows (); |
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193 int this_elt_nc = tmp.columns (); |
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194 |
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195 if (this_elt_nr == 0 || this_elt_nc == 0) |
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196 { |
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197 if (Vempty_list_elements_ok < 0) |
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198 eval_warning ("empty matrix found in matrix list", |
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199 elt->line (), elt->column ()); |
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200 else if (Vempty_list_elements_ok == 0) |
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201 { |
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202 eval_error ("empty matrix found in matrix list", |
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203 elt->line (), elt->column ()); |
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204 break; |
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205 } |
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206 } |
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207 else |
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208 { |
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209 all_mt = false; |
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210 |
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211 if (first_elem) |
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212 { |
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213 first_elem = false; |
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214 |
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215 nr = this_elt_nr; |
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216 } |
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217 else if (this_elt_nr != nr) |
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218 { |
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219 eval_error ("number of rows must match", |
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220 elt->line (), elt->column ()); |
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221 break; |
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222 } |
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223 |
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224 nc += this_elt_nc; |
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225 |
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226 append (tmp); |
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227 } |
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228 |
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229 if (all_str && ! tmp.is_string ()) |
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230 all_str = false; |
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231 |
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232 if (! some_str && tmp.is_string ()) |
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233 some_str = true; |
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234 |
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235 if (! is_cmplx && tmp.is_complex_type ()) |
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236 is_cmplx = true; |
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237 } |
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238 } |
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239 |
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240 ok = ! error_state; |
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241 } |
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242 |
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243 void |
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244 tm_row_const::tm_row_const_rep::eval_error (const char *msg, int l, |
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245 int c) const |
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246 { |
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247 if (l == -1 && c == -1) |
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248 ::error ("%s", msg); |
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249 else |
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250 ::error ("%s near line %d, column %d", msg, l, c); |
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251 } |
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252 |
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253 void |
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254 tm_row_const::tm_row_const_rep::eval_warning (const char *msg, int l, |
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255 int c) const |
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256 { |
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257 if (l == -1 && c == -1) |
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258 ::warning ("%s", msg); |
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259 else |
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260 ::warning ("%s near line %d, column %d", msg, l, c); |
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261 } |
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262 |
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263 #include "SLList.h" |
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264 #include "SLList.cc" |
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265 |
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266 template class SLNode<tm_row_const>; |
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267 template class SLList<tm_row_const>; |
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268 |
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269 class |
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270 tm_const : public SLList<tm_row_const> |
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271 { |
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272 public: |
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273 |
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274 tm_const (const tree_matrix& tm) |
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275 : SLList<tm_row_const> (), nr (0), nc (0), |
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276 all_str (false), some_str (false), is_cmplx (false), |
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277 all_mt (true), ok (false) |
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278 { init (tm); } |
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279 |
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280 ~tm_const (void) { } |
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281 |
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282 int rows (void) const { return nr; } |
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283 int cols (void) const { return nc; } |
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284 |
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285 bool all_strings_p (void) const { return all_str; } |
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286 bool some_strings_p (void) const { return some_str; } |
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287 bool complex_p (void) const { return is_cmplx; } |
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288 bool all_empty_p (void) const { return all_mt; } |
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289 |
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290 operator void* () const |
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291 { return ok ? static_cast<void *> (-1) : static_cast<void *> (0); } |
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292 |
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293 private: |
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294 |
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295 int nr; |
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296 int nc; |
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297 |
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298 bool all_str; |
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299 bool some_str; |
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300 bool is_cmplx; |
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301 bool all_mt; |
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302 |
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303 bool ok; |
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304 |
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305 tm_const (void); |
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306 |
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307 tm_const (const tm_const&); |
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308 |
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309 tm_const& operator = (const tm_const&); |
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310 |
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311 void init (const tree_matrix& tm); |
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312 }; |
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313 |
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314 void |
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315 tm_const::init (const tree_matrix& tm) |
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316 { |
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317 all_str = true; |
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318 |
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319 bool first_elem = true; |
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320 |
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321 // Just eval and figure out if what we have is complex or all |
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322 // strings. We can't check columns until we know that this is a |
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323 // numeric matrix -- collections of strings can have elements of |
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324 // different lengths. |
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325 |
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326 for (Pix p = tm.first (); p != 0; tm.next (p)) |
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327 { |
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328 tree_argument_list *elt = tm (p); |
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329 |
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330 tm_row_const tmp (*elt); |
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331 |
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332 if (tmp) |
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333 { |
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334 if (all_str && ! tmp.all_strings_p ()) |
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335 all_str = false; |
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336 |
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337 if (! some_str && tmp.some_strings_p ()) |
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338 some_str = true; |
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339 |
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340 if (! is_cmplx && tmp.complex_p ()) |
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341 is_cmplx = true; |
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342 |
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343 if (all_mt && ! tmp.all_empty_p ()) |
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344 all_mt = false; |
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345 |
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346 append (tmp); |
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347 } |
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348 else |
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349 break; |
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350 } |
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351 |
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352 if (! error_state) |
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353 { |
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354 for (Pix p = first (); p != 0; next (p)) |
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355 { |
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356 tm_row_const elt = this->operator () (p); |
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357 |
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358 int this_elt_nr = elt.rows (); |
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359 int this_elt_nc = elt.cols (); |
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360 |
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361 if (this_elt_nr == 0 || this_elt_nc == 0) |
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362 { |
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363 if (Vempty_list_elements_ok < 0) |
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364 warning ("empty matrix found in matrix list"); |
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365 else if (Vempty_list_elements_ok == 0) |
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366 { |
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367 ::error ("empty matrix found in matrix list"); |
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368 break; |
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369 } |
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370 } |
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371 else |
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372 { |
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373 all_mt = false; |
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374 |
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375 if (first_elem) |
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376 { |
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377 first_elem = false; |
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378 |
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379 nc = this_elt_nc; |
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380 } |
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381 else if (all_str) |
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382 { |
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383 if (this_elt_nc > nc) |
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384 nc = this_elt_nc; |
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385 } |
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386 else if (this_elt_nc != nc) |
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387 { |
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388 ::error ("number of columns must match"); |
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389 break; |
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390 } |
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391 |
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392 nr += this_elt_nr; |
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393 } |
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394 } |
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395 } |
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396 |
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397 ok = ! error_state; |
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398 } |
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399 |
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400 tree_matrix::~tree_matrix (void) |
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401 { |
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402 while (! empty ()) |
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403 { |
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404 tree_argument_list *t = remove_front (); |
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405 delete t; |
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406 } |
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407 } |
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408 |
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409 bool |
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410 tree_matrix::all_elements_are_constant (void) const |
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411 { |
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412 for (Pix p = first (); p != 0; next (p)) |
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413 { |
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414 tree_argument_list *elt = this->operator () (p); |
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415 |
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416 if (! elt->all_elements_are_constant ()) |
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417 return false; |
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418 } |
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419 |
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420 return true; |
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421 } |
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422 |
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423 // Just about as ugly as it gets. |
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424 // Less ugly than before, anyway. |
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425 // Looking better all the time. |
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426 |
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427 octave_value_list |
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428 tree_matrix::rvalue (int nargout) |
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429 { |
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430 octave_value_list retval; |
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431 |
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432 if (nargout > 1) |
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433 error ("invalid number of output arguments for matrix list"); |
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434 else |
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435 retval = rvalue (); |
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436 |
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437 return retval; |
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438 } |
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439 |
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440 octave_value |
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441 tree_matrix::rvalue (void) |
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442 { |
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2086
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443 octave_value retval; |
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444 |
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445 tm_const tmp (*this); |
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446 |
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2868
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447 bool all_strings_p = false; |
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3110
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448 bool some_strings_p = false; |
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2868
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449 bool all_empty_p = false; |
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2602
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450 |
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3110
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451 bool frc_str_conv = false; |
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452 |
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453 if (tmp) |
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454 { |
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455 int nr = tmp.rows (); |
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456 int nc = tmp.cols (); |
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457 |
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1827
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458 Matrix m; |
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459 ComplexMatrix cm; |
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460 charMatrix chm; |
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461 |
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1827
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462 // Now, extract the values from the individual elements and |
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463 // insert them in the result matrix. |
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464 |
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2868
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465 bool found_complex = tmp.complex_p (); |
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466 |
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2868
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467 all_strings_p = tmp.all_strings_p (); |
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3110
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468 some_strings_p = tmp.some_strings_p (); |
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2868
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469 all_empty_p = tmp.all_empty_p (); |
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2602
|
470 |
|
3110
|
471 frc_str_conv = Vimplicit_num_to_str_ok && some_strings_p; |
|
|
472 |
|
2868
|
473 if (all_strings_p) |
|
2254
|
474 chm.resize (nr, nc, Vstring_fill_char); |
|
1827
|
475 else if (found_complex) |
|
|
476 cm.resize (nr, nc, 0.0); |
|
|
477 else |
|
|
478 m.resize (nr, nc, 0.0); |
|
1741
|
479 |
|
1827
|
480 int put_row = 0; |
|
1741
|
481 |
|
1827
|
482 for (Pix p = tmp.first (); p != 0; tmp.next (p)) |
|
|
483 { |
|
|
484 int put_col = 0; |
|
1741
|
485 |
|
1827
|
486 tm_row_const row = tmp (p); |
|
1741
|
487 |
|
1827
|
488 for (Pix q = row.first (); q != 0; row.next (q)) |
|
|
489 { |
|
2086
|
490 octave_value elt = row (q); |
|
1741
|
491 |
|
1827
|
492 if (found_complex) |
|
|
493 { |
|
|
494 if (elt.is_real_scalar ()) |
|
|
495 cm (put_row, put_col) = elt.double_value (); |
|
|
496 else if (elt.is_real_matrix () || elt.is_range ()) |
|
|
497 cm.insert (elt.matrix_value (), put_row, put_col); |
|
|
498 else if (elt.is_complex_scalar ()) |
|
|
499 cm (put_row, put_col) = elt.complex_value (); |
|
|
500 else |
|
|
501 { |
|
|
502 ComplexMatrix cm_elt = elt.complex_matrix_value (); |
|
1741
|
503 |
|
1827
|
504 if (error_state) |
|
|
505 goto done; |
|
1741
|
506 |
|
1827
|
507 cm.insert (cm_elt, put_row, put_col); |
|
|
508 } |
|
|
509 } |
|
|
510 else |
|
|
511 { |
|
|
512 if (elt.is_real_scalar ()) |
|
|
513 m (put_row, put_col) = elt.double_value (); |
|
2868
|
514 else if (elt.is_string () && all_strings_p) |
|
1827
|
515 { |
|
2495
|
516 charMatrix chm_elt = elt.char_matrix_value (); |
|
1741
|
517 |
|
1827
|
518 if (error_state) |
|
|
519 goto done; |
|
1741
|
520 |
|
1827
|
521 chm.insert (chm_elt, put_row, put_col); |
|
|
522 } |
|
|
523 else |
|
|
524 { |
|
3110
|
525 Matrix m_elt = elt.matrix_value (frc_str_conv); |
|
1827
|
526 |
|
|
527 if (error_state) |
|
|
528 goto done; |
|
1741
|
529 |
|
1827
|
530 m.insert (m_elt, put_row, put_col); |
|
|
531 } |
|
|
532 } |
|
|
533 |
|
2868
|
534 if (all_strings_p && chm.rows () > 0 && chm.cols () > 0) |
|
2086
|
535 retval = octave_value (chm, true); |
|
1827
|
536 else if (found_complex) |
|
|
537 retval = cm; |
|
|
538 else |
|
|
539 retval = m; |
|
|
540 |
|
|
541 put_col += elt.columns (); |
|
1741
|
542 } |
|
|
543 |
|
1827
|
544 put_row += row.rows (); |
|
1741
|
545 } |
|
|
546 } |
|
|
547 |
|
1827
|
548 done: |
|
1741
|
549 |
|
3110
|
550 if (! error_state) |
|
2602
|
551 { |
|
3110
|
552 if (retval.is_undefined () && all_empty_p) |
|
|
553 { |
|
|
554 if (all_strings_p) |
|
|
555 retval = ""; |
|
|
556 else |
|
|
557 retval = Matrix (); |
|
|
558 } |
|
|
559 else if (frc_str_conv && ! retval.is_string ()) |
|
|
560 retval = retval.convert_to_str (); |
|
2602
|
561 } |
|
|
562 |
|
1741
|
563 return retval; |
|
|
564 } |
|
|
565 |
|
|
566 void |
|
2124
|
567 tree_matrix::accept (tree_walker& tw) |
|
1741
|
568 { |
|
2124
|
569 tw.visit_matrix (*this); |
|
1741
|
570 } |
|
|
571 |
|
2172
|
572 static int |
|
|
573 empty_list_elements_ok (void) |
|
|
574 { |
|
|
575 Vempty_list_elements_ok = check_preference ("empty_list_elements_ok"); |
|
|
576 |
|
|
577 return 0; |
|
|
578 } |
|
|
579 |
|
2254
|
580 static int |
|
3110
|
581 implicit_num_to_str_ok (void) |
|
|
582 { |
|
|
583 Vimplicit_num_to_str_ok = check_preference ("implicit_num_to_str_ok"); |
|
|
584 |
|
|
585 return 0; |
|
|
586 } |
|
|
587 |
|
|
588 static int |
|
2254
|
589 string_fill_char (void) |
|
|
590 { |
|
|
591 int status = 0; |
|
|
592 |
|
|
593 string s = builtin_string_variable ("string_fill_char"); |
|
|
594 |
|
|
595 switch (s.length ()) |
|
|
596 { |
|
|
597 case 1: |
|
|
598 Vstring_fill_char = s[0]; |
|
|
599 break; |
|
|
600 |
|
|
601 case 0: |
|
|
602 Vstring_fill_char = '\0'; |
|
|
603 break; |
|
|
604 |
|
|
605 default: |
|
|
606 warning ("string_fill_char must be a single character"); |
|
|
607 status = -1; |
|
|
608 break; |
|
|
609 } |
|
|
610 |
|
|
611 return status; |
|
|
612 } |
|
|
613 |
|
2172
|
614 void |
|
|
615 symbols_of_pt_mat (void) |
|
|
616 { |
|
|
617 DEFVAR (empty_list_elements_ok, "warn", 0, empty_list_elements_ok, |
|
|
618 "ignore the empty element in expressions like `a = [[], 1]'"); |
|
2254
|
619 |
|
3110
|
620 DEFVAR (implicit_num_to_str_ok, 0.0, 0, implicit_num_to_str_ok, |
|
|
621 "make the result of things like `[97, 98, 99, \"123\"]' be a string"); |
|
|
622 |
|
2254
|
623 DEFVAR (string_fill_char, " ", 0, string_fill_char, |
|
|
624 "the character to fill with when creating string arrays."); |
|
2172
|
625 } |
|
|
626 |
|
1741
|
627 /* |
|
|
628 ;;; Local Variables: *** |
|
|
629 ;;; mode: C++ *** |
|
|
630 ;;; End: *** |
|
|
631 */ |
