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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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383
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24 #if !defined (octave_symtab_h) |
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25 #define octave_symtab_h 1 |
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26 |
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27 #include <cassert> |
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28 |
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29 #include <string> |
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30 #include <stack> |
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31 #include <sstream> |
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32 |
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33 #include "oct-alloc.h" |
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34 #include "str-vec.h" |
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35 |
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36 #include "ov.h" |
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37 |
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38 class octave_lvalue; |
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39 |
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40 class string_vector; |
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41 |
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42 class symbol_record; |
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43 class symbol_table; |
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44 |
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45 struct |
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46 whos_parameter |
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47 { |
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48 char command; |
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49 char modifier; |
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50 int parameter_length; |
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51 int first_parameter_length; |
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52 int dimensions; |
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53 int balance; |
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54 std::string text; |
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55 std::string line; |
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56 }; |
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57 |
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58 // Individual records in a symbol table. |
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59 |
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60 class |
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61 symbol_record |
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62 { |
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63 public: |
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64 |
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65 // If you add or delete an entry here, you'll also need to change |
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66 // the width parameter in the declaration for symbol_type below... |
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67 |
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68 enum TYPE |
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69 { |
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70 UNKNOWN = 0, |
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71 USER_FUNCTION = 1, |
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72 USER_VARIABLE = 2, |
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73 DLD_FUNCTION = 4, |
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74 BUILTIN_FUNCTION = 8, |
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75 COMMAND = 16, |
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76 RAWCOMMAND = 32, |
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77 MAPPER_FUNCTION = 64 |
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78 }; |
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79 |
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80 private: |
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81 |
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82 // Variables or functions. |
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83 |
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84 class symbol_def |
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85 { |
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86 public: |
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87 |
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88 symbol_def (const octave_value& val = octave_value (), |
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89 unsigned int sym_type = 0) |
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90 : symbol_type (sym_type), eternal (0), read_only (0), help_string (), |
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91 definition (val), count (1) { } |
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92 |
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93 ~symbol_def (void) { } |
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94 |
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95 bool is_variable (void) const |
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96 { return (symbol_type & symbol_record::USER_VARIABLE); } |
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97 |
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98 // It's not necessary to check for COMMAND and MAPPER_FUNCTION |
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99 // here. Those tags are just used as additional qualifiers for |
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100 // the other types of functions. |
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101 |
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102 bool is_function (void) const |
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103 { |
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104 return (symbol_type & symbol_record::USER_FUNCTION |
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105 || symbol_type & symbol_record::DLD_FUNCTION |
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106 || symbol_type & symbol_record::BUILTIN_FUNCTION); |
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107 } |
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108 |
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109 bool is_user_variable (void) const |
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110 { return (symbol_type & symbol_record::USER_VARIABLE); } |
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111 |
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112 // Don't use |= here to avoid error with AIX compiler. |
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113 void mark_as_command (void) |
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114 { symbol_type = symbol_type | symbol_record::COMMAND; } |
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115 |
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116 void unmark_command (void) |
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117 { symbol_type &= ~symbol_record::COMMAND; } |
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118 |
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119 bool is_command (void) const |
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120 { return (symbol_type & symbol_record::COMMAND); } |
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121 |
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122 void mark_as_rawcommand (void) |
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123 { symbol_type |= (symbol_record::COMMAND |
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124 | symbol_record::RAWCOMMAND); } |
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125 |
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126 void unmark_rawcommand (void) |
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127 { symbol_type &= ~symbol_record::RAWCOMMAND; } |
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128 |
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129 bool is_rawcommand (void) const |
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130 { return (symbol_type & symbol_record::RAWCOMMAND); } |
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131 |
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132 bool is_mapper_function (void) const |
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133 { return (symbol_type & symbol_record::MAPPER_FUNCTION); } |
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134 |
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135 bool is_user_function (void) const |
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136 { return (symbol_type & symbol_record::USER_FUNCTION); } |
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137 |
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138 bool is_builtin_function (void) const |
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139 { return (symbol_type & symbol_record::BUILTIN_FUNCTION); } |
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140 |
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141 bool is_dld_function (void) const |
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142 { return (symbol_type & symbol_record::DLD_FUNCTION); } |
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143 |
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144 // FIXME |
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145 bool is_map_element (const std::string& /* elts */) const |
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146 { return false; } |
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147 |
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148 bool is_defined (void) const |
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149 { return definition.is_defined (); } |
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150 |
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151 bool is_read_only (void) const |
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152 { return read_only; } |
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153 |
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154 bool is_eternal (void) const |
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155 { return eternal; } |
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156 |
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157 bool is_matrix_type (void) const |
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158 { return definition.is_matrix_type (); } |
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159 |
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160 bool is_sparse_type (void) const |
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161 { return definition.is_sparse_type (); } |
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162 |
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163 bool is_complex_type (void) const |
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164 { return definition.is_complex_type (); } |
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165 |
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166 std::string class_name (void) const |
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167 { return definition.class_name (); } |
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168 |
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169 Matrix size (void) const |
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170 { return definition.size (); } |
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171 |
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172 size_t byte_size (void) const |
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173 { return definition.byte_size (); }; |
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174 |
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175 octave_idx_type numel (void) const |
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176 { return definition.numel (); }; |
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177 |
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178 octave_idx_type capacity (void) const |
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179 { return definition.capacity (); }; |
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180 |
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181 dim_vector dims (void) const |
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182 { return definition.dims (); } |
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183 |
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184 octave_idx_type rows (void) const { return definition.rows (); } |
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185 octave_idx_type columns (void) const { return definition.columns (); } |
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186 |
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187 std::string type_name (void) const { return definition.type_name (); } |
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188 |
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189 std::string type_as_string (void) const; |
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190 |
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191 void type (std::ostream& os, const std::string& name, bool pr_type_info, |
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192 bool quiet, bool pr_orig_txt); |
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193 |
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194 std::string which (const std::string& name); |
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195 |
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196 void which (std::ostream& os, const std::string& name); |
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197 |
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198 void define (const octave_value& val, unsigned int sym_type) |
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199 { |
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200 definition = val; |
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201 symbol_type = sym_type; |
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202 } |
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203 |
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204 void protect (void) { read_only = 1; } |
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205 |
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206 void unprotect (void) { read_only = 0; } |
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207 |
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208 void make_eternal (void) { eternal = 1; } |
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209 |
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210 octave_value& def (void) { return definition; } |
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211 |
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212 std::string help (void) const { return help_string; } |
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213 |
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214 void document (const std::string& h); |
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215 |
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216 unsigned int type (void) { return symbol_type; } |
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217 |
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218 void *operator new (size_t size) |
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219 { return allocator.alloc (size); } |
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220 |
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221 void operator delete (void *p, size_t size) |
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222 { allocator.free (p, size); } |
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223 |
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224 static octave_allocator allocator; |
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225 |
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226 // The type of this symbol (see the enum above). |
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227 unsigned int symbol_type : 9; |
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228 |
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229 // Nonzero means this variable cannot be cleared. |
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230 unsigned int eternal : 1; |
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231 |
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232 // Nonzero means this variable cannot be given a new value. |
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233 unsigned int read_only : 1; |
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234 |
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235 // The doc string associated with this variable. |
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236 std::string help_string; |
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237 |
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238 // The value of this definition. See ov.h and related files. |
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239 octave_value definition; |
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240 |
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241 // Reference count. |
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242 int count; |
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243 |
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244 void print_info (std::ostream& os, |
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245 const std::string& prefix = std::string ()) const; |
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246 |
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247 // No copying! |
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248 |
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249 symbol_def (const symbol_def& sd); |
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250 |
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251 symbol_def& operator = (const symbol_def& sd); |
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252 }; |
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253 |
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254 public: |
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255 |
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256 typedef int (*change_function) (void); |
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257 |
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258 symbol_record (void) |
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259 : formal_param (false), linked_to_global (false), |
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260 tagged_static (false), can_hide_function (true), |
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261 visible (true), nm (), chg_fcn (0), |
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262 definition (new symbol_def ()), next_elem (0) { } |
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263 |
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264 // FIXME -- kluge alert! We obviously need a better way of |
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265 // handling allow_shadow! |
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266 |
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267 symbol_record (const std::string& n, symbol_record *nxt) |
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268 : formal_param (false), linked_to_global (false), |
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269 tagged_static (false), can_hide_function (n != "__end__"), |
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270 visible (true), nm (n), chg_fcn (0), |
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271 definition (new symbol_def ()), next_elem (nxt) { } |
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272 |
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273 ~symbol_record (void) |
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274 { |
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275 if (--definition->count <= 0) |
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276 delete definition; |
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277 } |
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278 |
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279 std::string name (void) const { return nm; } |
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280 |
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281 std::string help (void) const { return definition->help (); } |
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282 |
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283 octave_value& def (void) { return definition->def (); } |
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284 |
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285 void rename (const std::string& new_name); |
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286 |
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287 bool is_function (void) const |
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288 { return definition->is_function (); } |
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289 |
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290 void mark_as_command (void) |
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291 { definition->mark_as_command (); } |
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292 |
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293 void unmark_command (void) |
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294 { definition->unmark_command (); } |
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295 |
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296 bool is_command (void) const |
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297 { return definition->is_command (); } |
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298 |
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299 void mark_as_rawcommand (void) |
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300 { definition->mark_as_rawcommand (); } |
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301 |
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302 void unmark_rawcommand (void) |
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303 { definition->unmark_rawcommand (); } |
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304 |
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305 bool is_rawcommand (void) const |
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306 { return definition->is_rawcommand (); } |
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307 |
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308 bool is_mapper_function (void) const |
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309 { return definition->is_mapper_function (); } |
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310 |
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311 bool is_user_function (void) const |
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312 { return definition->is_user_function (); } |
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313 |
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314 bool is_builtin_function (void) const |
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315 { return definition->is_builtin_function (); } |
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316 |
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317 bool is_dld_function (void) const |
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318 { return definition->is_dld_function (); } |
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319 |
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320 bool is_variable (void) const |
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321 { return definition->is_variable (); } |
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322 |
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323 bool is_user_variable (void) const |
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324 { return definition->is_user_variable (); } |
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325 |
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326 bool is_map_element (const std::string& elts) const |
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327 { return definition->is_map_element (elts); } |
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328 |
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329 unsigned int type (void) const { return definition->type (); } |
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330 |
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331 bool is_defined (void) const { return definition->is_defined (); } |
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332 |
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333 bool is_read_only (void) const { return definition->is_read_only (); } |
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334 |
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335 bool is_eternal (void) const { return definition->is_eternal (); } |
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336 |
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337 void protect (void) { definition->protect (); } |
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338 |
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339 void unprotect (void) { definition->unprotect (); } |
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340 |
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341 void make_eternal (void) { definition->make_eternal (); } |
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342 |
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343 void hide (void) { visible = false; } |
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344 void show (void) { visible = true; } |
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345 bool is_visible (void) const { return visible; } |
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346 |
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347 void set_change_function (change_function f) { chg_fcn = f; } |
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348 |
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349 void define (const octave_value& v, unsigned int sym_type = USER_VARIABLE); |
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350 |
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351 bool define (octave_function *f, unsigned int sym_type); |
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352 |
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353 void document (const std::string& h) { definition->document (h); } |
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354 |
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355 void clear (void); |
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356 |
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357 void alias (symbol_record *s, bool mark_to_clear = false); |
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358 |
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359 void mark_as_formal_parameter (void); |
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360 bool is_formal_parameter (void) const { return formal_param; } |
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361 |
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195
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362 void mark_as_linked_to_global (void); |
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363 bool is_linked_to_global (void) const { return linked_to_global; } |
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364 |
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365 void mark_as_static (void); |
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366 bool is_static (void) const { return tagged_static; } |
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367 void unmark_static (void) { tagged_static = false; } |
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368 |
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369 bool is_matrix_type (void) const |
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370 { return definition->is_matrix_type (); } |
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371 |
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372 bool is_sparse_type (void) const |
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373 { return definition->is_sparse_type (); } |
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374 |
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375 bool is_complex_type (void) const |
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376 { return definition->is_complex_type (); } |
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377 |
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378 std::string class_name (void) const |
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379 { return definition->class_name (); } |
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380 |
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381 Matrix size (void) const |
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382 { return definition->size (); } |
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383 |
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384 size_t byte_size (void) const |
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385 { return definition->byte_size (); }; |
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386 |
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387 octave_idx_type numel (void) const |
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388 { return definition->numel (); }; |
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389 |
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390 octave_idx_type capacity (void) const |
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391 { return definition->capacity (); }; |
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392 |
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393 dim_vector dims (void) const { return definition->dims (); } |
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394 |
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395 int dimensions_string_req_first_space (int print_dims) const; |
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396 |
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397 int dimensions_string_req_total_space (int print_dims) const; |
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398 |
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399 std::string make_dimensions_string (int print_dims) const; |
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400 |
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401 octave_idx_type rows (void) const { return definition->rows (); } |
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402 octave_idx_type columns (void) const { return definition->columns (); } |
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403 |
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404 std::string type_name (void) const { return definition->type_name (); } |
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405 |
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406 std::string type_as_string (void) const |
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407 { return definition->type_as_string (); } |
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408 |
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409 void type (std::ostream& os, bool pr_type_info, bool quiet, bool pr_orig_txt) |
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410 { definition->type (os, name (), pr_type_info, quiet, pr_orig_txt); } |
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411 |
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412 std::string which (void) { return definition->which (name ()); } |
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413 |
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414 void which (std::ostream& os) { definition->which (os, name ()); } |
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415 |
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416 octave_value& variable_value (void); |
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417 octave_lvalue variable_reference (void); |
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418 |
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419 symbol_record *next (void) const { return next_elem; } |
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8
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420 |
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421 void chain (symbol_record *s) { next_elem = s; } |
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195
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422 |
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220
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423 void push_context (void); |
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424 |
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220
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425 void pop_context (void); |
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426 |
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427 void print_symbol_info_line (std::ostream& os, |
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428 std::list<whos_parameter>& params) const; |
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3013
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429 |
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3933
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430 void print_info (std::ostream& os, |
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431 const std::string& prefix = std::string ()) const; |
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3239
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432 |
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8
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433 private: |
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434 |
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2893
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435 unsigned int formal_param : 1; |
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436 unsigned int linked_to_global : 1; |
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437 unsigned int tagged_static : 1; |
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4234
|
438 unsigned int can_hide_function : 1; |
|
5399
|
439 unsigned int visible : 1; |
|
195
|
440 |
|
3523
|
441 std::string nm; |
|
3011
|
442 change_function chg_fcn; |
|
195
|
443 symbol_def *definition; |
|
8
|
444 symbol_record *next_elem; |
|
395
|
445 |
|
3011
|
446 // This should maybe be one stack with a structure containing all the |
|
|
447 // items we need to save for recursive calls... |
|
4214
|
448 std::stack <symbol_def *> context; |
|
|
449 std::stack <unsigned int> global_link_context; |
|
8
|
450 |
|
5397
|
451 std::stack <symbol_record *> aliases_to_clear; |
|
|
452 |
|
|
453 void push_alias_to_clear (symbol_record *s) |
|
|
454 { aliases_to_clear.push (s); } |
|
|
455 |
|
3011
|
456 bool read_only_error (const char *action); |
|
195
|
457 |
|
5397
|
458 void maybe_delete_def (void) |
|
|
459 { |
|
|
460 if (--definition->count <= 0) |
|
|
461 delete definition; |
|
|
462 } |
|
|
463 |
|
3011
|
464 // No copying! |
|
|
465 |
|
|
466 symbol_record (const symbol_record& s); |
|
195
|
467 |
|
8
|
468 symbol_record& operator = (const symbol_record& s); |
|
|
469 }; |
|
|
470 |
|
767
|
471 // A symbol table. |
|
200
|
472 |
|
|
473 #define SYMTAB_LOCAL_SCOPE 1 |
|
|
474 #define SYMTAB_GLOBAL_SCOPE 2 |
|
|
475 |
|
|
476 #define SYMTAB_ALL_SCOPES (SYMTAB_LOCAL_SCOPE | SYMTAB_GLOBAL_SCOPE) |
|
|
477 |
|
3011
|
478 #define SYMTAB_ALL_TYPES (symbol_record::USER_FUNCTION \ |
|
|
479 | symbol_record::USER_VARIABLE \ |
|
3325
|
480 | symbol_record::DLD_FUNCTION \ |
|
3011
|
481 | symbol_record::BUILTIN_FUNCTION \ |
|
4208
|
482 | symbol_record::COMMAND \ |
|
5102
|
483 | symbol_record::RAWCOMMAND \ |
|
5794
|
484 | symbol_record::MAPPER_FUNCTION) |
|
200
|
485 |
|
5794
|
486 #define SYMTAB_VARIABLES (symbol_record::USER_VARIABLE) |
|
1412
|
487 |
|
8
|
488 class |
|
|
489 symbol_table |
|
|
490 { |
|
|
491 public: |
|
|
492 |
|
4238
|
493 symbol_table (unsigned int tab_size = 128, |
|
|
494 const std::string& nm = std::string ()) |
|
|
495 : table_size (tab_size), table (new symbol_record [table_size]), |
|
|
496 table_name (nm) |
|
4009
|
497 { |
|
|
498 assert ((tab_size % 2) == 0); |
|
4238
|
499 |
|
|
500 if (table_name.empty ()) |
|
|
501 { |
|
5765
|
502 std::ostringstream buf; |
|
|
503 buf << symtab_count++; |
|
|
504 table_name = buf.str (); |
|
4238
|
505 } |
|
4009
|
506 } |
|
3011
|
507 |
|
5013
|
508 ~symbol_table (void); |
|
8
|
509 |
|
3523
|
510 symbol_record *lookup (const std::string& nm, bool insert = false, |
|
2856
|
511 bool warn = false); |
|
8
|
512 |
|
3523
|
513 void rename (const std::string& old_name, const std::string& new_name); |
|
572
|
514 |
|
4009
|
515 void clear (void); |
|
|
516 |
|
|
517 void clear_variables (void); |
|
|
518 void clear_functions (void); |
|
|
519 void clear_globals (void); |
|
|
520 |
|
|
521 bool clear (const std::string& nm); |
|
|
522 |
|
|
523 bool clear_variable (const std::string& nm); |
|
|
524 bool clear_function (const std::string& nm); |
|
|
525 bool clear_global (const std::string& nm); |
|
|
526 |
|
|
527 bool clear_variable_pattern (const std::string& pat); |
|
|
528 bool clear_function_pattern (const std::string& pat); |
|
|
529 bool clear_global_pattern (const std::string& pat); |
|
8
|
530 |
|
164
|
531 int size (void) const; |
|
8
|
532 |
|
3013
|
533 Array<symbol_record *> |
|
4913
|
534 subsymbol_list (const string_vector& pats = string_vector (), |
|
|
535 unsigned int type = SYMTAB_ALL_TYPES, |
|
|
536 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
|
537 |
|
|
538 Array<symbol_record *> |
|
3355
|
539 symbol_list (const string_vector& pats = string_vector (), |
|
3013
|
540 unsigned int type = SYMTAB_ALL_TYPES, |
|
|
541 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
|
542 |
|
195
|
543 |
|
1755
|
544 string_vector |
|
3355
|
545 name_list (const string_vector& pats = string_vector (), |
|
3013
|
546 bool sort = false, unsigned int type = SYMTAB_ALL_TYPES, |
|
|
547 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
605
|
548 |
|
4009
|
549 string_vector |
|
|
550 user_function_name_list (void) const |
|
|
551 { |
|
|
552 return name_list |
|
|
553 (string_vector (), false, |
|
|
554 symbol_record::USER_FUNCTION|symbol_record::DLD_FUNCTION, |
|
|
555 SYMTAB_ALL_SCOPES); |
|
|
556 } |
|
|
557 |
|
|
558 string_vector |
|
|
559 global_variable_name_list (void) const |
|
|
560 { |
|
|
561 return name_list |
|
|
562 (string_vector (), false, SYMTAB_VARIABLES, SYMTAB_GLOBAL_SCOPE); |
|
|
563 } |
|
|
564 |
|
|
565 string_vector |
|
|
566 variable_name_list (void) const |
|
|
567 { |
|
|
568 return name_list |
|
|
569 (string_vector (), false, SYMTAB_VARIABLES, SYMTAB_LOCAL_SCOPE); |
|
|
570 } |
|
3011
|
571 |
|
|
572 int maybe_list (const char *header, const string_vector& argv, |
|
3523
|
573 std::ostream& os, bool show_verbose, |
|
3011
|
574 unsigned type, unsigned scope); |
|
|
575 |
|
3523
|
576 Array<symbol_record *> glob (const std::string& pat = std::string ("*"), |
|
3355
|
577 unsigned int type = SYMTAB_ALL_TYPES, |
|
|
578 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
8
|
579 |
|
220
|
580 void push_context (void); |
|
3011
|
581 |
|
220
|
582 void pop_context (void); |
|
|
583 |
|
3941
|
584 void print_info (std::ostream& os) const; |
|
3011
|
585 |
|
8
|
586 private: |
|
|
587 |
|
3011
|
588 unsigned int table_size; |
|
|
589 |
|
|
590 symbol_record *table; |
|
|
591 |
|
4238
|
592 std::string table_name; |
|
|
593 |
|
|
594 static unsigned long int symtab_count; |
|
|
595 |
|
4913
|
596 void |
|
|
597 print_descriptor (std::ostream& os, |
|
|
598 std::list<whos_parameter> params) const; |
|
|
599 |
|
|
600 std::list<whos_parameter> |
|
|
601 parse_whos_line_format (Array<symbol_record *>& symbols) const; |
|
|
602 |
|
3523
|
603 unsigned int hash (const std::string& s); |
|
8
|
604 |
|
3011
|
605 // No copying! |
|
8
|
606 |
|
3011
|
607 symbol_table (const symbol_table&); |
|
1962
|
608 |
|
3011
|
609 symbol_table& operator = (const symbol_table&); |
|
|
610 }; |
|
2790
|
611 |
|
4913
|
612 // Defines layout for the whos/who -long command. |
|
|
613 extern std::string Vwhos_line_format; |
|
|
614 |
|
8
|
615 #endif |
|
|
616 |
|
|
617 /* |
|
|
618 ;;; Local Variables: *** |
|
|
619 ;;; mode: C++ *** |
|
|
620 ;;; End: *** |
|
|
621 */ |
