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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 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_symtab_h) |
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24 #define octave_symtab_h 1 |
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25 |
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26 #include <cassert> |
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27 |
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28 #include <string> |
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29 #include <stack> |
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30 #include <sstream> |
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31 |
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32 #include "oct-alloc.h" |
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33 #include "str-vec.h" |
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34 |
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35 #include "ov.h" |
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36 |
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37 class octave_lvalue; |
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38 |
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39 class string_vector; |
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40 |
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41 class symbol_record; |
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42 class symbol_table; |
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43 |
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44 struct |
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45 whos_parameter |
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46 { |
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47 char command; |
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48 char modifier; |
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49 int parameter_length; |
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50 int first_parameter_length; |
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51 int dimensions; |
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52 int balance; |
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53 std::string text; |
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54 std::string line; |
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55 }; |
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56 |
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57 // Individual records in a symbol table. |
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58 |
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59 class |
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60 OCTINTERP_API |
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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 MEX_FUNCTION = 128, |
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79 }; |
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80 |
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81 private: |
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82 |
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83 // Variables or functions. |
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84 |
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85 class symbol_def |
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86 { |
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87 public: |
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88 |
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89 symbol_def (const octave_value& val = octave_value (), |
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90 unsigned int sym_type = 0) |
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91 : symbol_type (sym_type), read_only (0), help_string (), |
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92 definition (val), count (1) { } |
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93 |
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94 ~symbol_def (void) { } |
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95 |
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96 bool is_variable (void) const |
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97 { return (symbol_type & symbol_record::USER_VARIABLE); } |
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98 |
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99 // It's not necessary to check for COMMAND and MAPPER_FUNCTION |
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100 // here. Those tags are just used as additional qualifiers for |
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101 // the other types of functions. |
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102 |
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103 bool is_function (void) const |
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104 { |
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105 return (symbol_type & symbol_record::USER_FUNCTION |
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106 || symbol_type & symbol_record::DLD_FUNCTION |
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107 || symbol_type & symbol_record::MEX_FUNCTION |
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108 || symbol_type & symbol_record::BUILTIN_FUNCTION); |
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109 } |
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110 |
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111 bool is_user_variable (void) const |
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112 { return (symbol_type & symbol_record::USER_VARIABLE); } |
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113 |
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114 // Don't use |= here to avoid error with AIX compiler. |
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115 void mark_as_command (void) |
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116 { symbol_type = symbol_type | symbol_record::COMMAND; } |
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117 |
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118 void unmark_command (void) |
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119 { symbol_type &= ~symbol_record::COMMAND; } |
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120 |
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121 bool is_command (void) const |
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122 { return (symbol_type & symbol_record::COMMAND); } |
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123 |
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124 void mark_as_rawcommand (void) |
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125 { symbol_type |= (symbol_record::COMMAND |
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126 | symbol_record::RAWCOMMAND); } |
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127 |
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128 void unmark_rawcommand (void) |
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129 { symbol_type &= ~symbol_record::RAWCOMMAND; } |
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130 |
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131 bool is_rawcommand (void) const |
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132 { return (symbol_type & symbol_record::RAWCOMMAND); } |
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133 |
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134 bool is_mapper_function (void) const |
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135 { return (symbol_type & symbol_record::MAPPER_FUNCTION); } |
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136 |
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137 bool is_user_function (void) const |
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138 { return (symbol_type & symbol_record::USER_FUNCTION); } |
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139 |
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140 bool is_builtin_function (void) const |
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141 { return (symbol_type & symbol_record::BUILTIN_FUNCTION); } |
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142 |
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143 bool is_dld_function (void) const |
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144 { return (symbol_type & symbol_record::DLD_FUNCTION); } |
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145 |
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146 bool is_mex_function (void) const |
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147 { return (symbol_type & symbol_record::MEX_FUNCTION); } |
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148 |
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149 // FIXME |
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150 bool is_map_element (const std::string& /* elts */) const |
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151 { return false; } |
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152 |
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153 bool is_defined (void) const |
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154 { return definition.is_defined (); } |
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155 |
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156 bool is_read_only (void) const |
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157 { return read_only; } |
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158 |
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159 bool is_matrix_type (void) const |
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160 { return definition.is_matrix_type (); } |
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161 |
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162 bool is_sparse_type (void) const |
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163 { return definition.is_sparse_type (); } |
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164 |
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165 bool is_complex_type (void) const |
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166 { return definition.is_complex_type (); } |
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167 |
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168 std::string class_name (void) const |
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169 { return definition.class_name (); } |
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170 |
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171 Matrix size (void) const |
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172 { return definition.size (); } |
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173 |
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174 size_t byte_size (void) const |
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175 { return definition.byte_size (); }; |
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176 |
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177 octave_idx_type numel (void) const |
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178 { return definition.numel (); }; |
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179 |
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180 octave_idx_type capacity (void) const |
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181 { return definition.capacity (); }; |
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182 |
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183 dim_vector dims (void) const |
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184 { return definition.dims (); } |
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185 |
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186 octave_idx_type rows (void) const { return definition.rows (); } |
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187 octave_idx_type columns (void) const { return definition.columns (); } |
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188 |
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189 std::string type_name (void) const { return definition.type_name (); } |
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190 |
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191 std::string type_as_string (void) const; |
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192 |
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193 void type (std::ostream& os, const std::string& name, bool pr_type_info, |
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194 bool quiet, bool pr_orig_txt); |
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195 |
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196 std::string which (const std::string& name); |
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197 |
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198 void which (std::ostream& os, const std::string& name); |
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199 |
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200 void define (const octave_value& val, unsigned int sym_type) |
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201 { |
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202 definition = val; |
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203 symbol_type = sym_type; |
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204 } |
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205 |
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206 void protect (void) { read_only = 1; } |
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207 |
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208 void unprotect (void) { read_only = 0; } |
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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 given a new value. |
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230 unsigned int read_only : 1; |
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231 |
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232 // The doc string associated with this variable. |
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233 std::string help_string; |
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234 |
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235 // The value of this definition. See ov.h and related files. |
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236 octave_value definition; |
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237 |
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238 // Reference count. |
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239 int count; |
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240 |
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241 void print_info (std::ostream& os, |
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242 const std::string& prefix = std::string ()) const; |
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243 |
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244 // No copying! |
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245 |
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246 symbol_def (const symbol_def& sd); |
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247 |
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248 symbol_def& operator = (const symbol_def& sd); |
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249 }; |
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250 |
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251 public: |
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252 |
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253 typedef int (*change_function) (void); |
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254 |
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255 symbol_record (void) |
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256 : formal_param (false), automatic_variable (false), |
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257 linked_to_global (false), tagged_static (false), |
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258 can_hide_function (true), visible (true), eternal (false), |
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259 nm (), chg_fcn (0), definition (new symbol_def ()), next_elem (0) { } |
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260 |
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261 // FIXME -- kluge alert! We obviously need a better way of |
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262 // handling allow_shadow! |
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263 |
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264 symbol_record (const std::string& n, symbol_record *nxt) |
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265 : formal_param (false), automatic_variable (false), |
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266 linked_to_global (false), tagged_static (false), |
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267 can_hide_function (n != "__end__"), visible (true), |
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268 eternal (false), nm (n), chg_fcn (0), |
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269 definition (new symbol_def ()), next_elem (nxt) { } |
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270 |
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271 ~symbol_record (void) |
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272 { |
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273 if (--definition->count <= 0) |
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274 delete definition; |
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275 } |
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276 |
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277 std::string name (void) const { return nm; } |
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278 |
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279 std::string help (void) const { return definition->help (); } |
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280 |
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281 octave_value& def (void) { return definition->def (); } |
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282 |
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283 void rename (const std::string& new_name); |
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284 |
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285 bool is_function (void) const |
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286 { return definition->is_function (); } |
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287 |
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288 void mark_as_command (void) |
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289 { definition->mark_as_command (); } |
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290 |
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291 void unmark_command (void) |
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292 { definition->unmark_command (); } |
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293 |
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294 bool is_command (void) const |
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295 { return definition->is_command (); } |
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296 |
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297 void mark_as_rawcommand (void) |
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298 { definition->mark_as_rawcommand (); } |
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299 |
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300 void unmark_rawcommand (void) |
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301 { definition->unmark_rawcommand (); } |
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302 |
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303 bool is_rawcommand (void) const |
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304 { return definition->is_rawcommand (); } |
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305 |
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306 bool is_mapper_function (void) const |
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307 { return definition->is_mapper_function (); } |
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308 |
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309 bool is_user_function (void) const |
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310 { return definition->is_user_function (); } |
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311 |
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312 bool is_builtin_function (void) const |
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313 { return definition->is_builtin_function (); } |
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314 |
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315 bool is_dld_function (void) const |
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316 { return definition->is_dld_function (); } |
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317 |
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318 bool is_mex_function (void) const |
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319 { return definition->is_mex_function (); } |
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320 |
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321 bool is_variable (void) const |
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322 { return definition->is_variable (); } |
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323 |
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324 bool is_user_variable (void) const |
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325 { return definition->is_user_variable (); } |
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326 |
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327 bool is_map_element (const std::string& elts) const |
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328 { return definition->is_map_element (elts); } |
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329 |
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330 unsigned int type (void) const { return definition->type (); } |
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331 |
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332 bool is_defined (void) const { return definition->is_defined (); } |
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333 |
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334 bool is_read_only (void) const { return definition->is_read_only (); } |
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335 |
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336 bool is_eternal (void) const { return eternal; } |
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337 |
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338 void protect (void) { definition->protect (); } |
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339 |
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340 void unprotect (void) { definition->unprotect (); } |
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341 |
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342 void make_eternal (void) { eternal = 1; } |
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343 |
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344 void hide (void) { visible = false; } |
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345 void show (void) { visible = true; } |
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346 bool is_visible (void) const { return visible; } |
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347 |
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348 void set_change_function (change_function f) { chg_fcn = f; } |
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349 |
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350 void define (const octave_value& v, unsigned int sym_type = USER_VARIABLE); |
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351 |
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352 bool define (octave_function *f, unsigned int sym_type); |
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353 |
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354 void document (const std::string& h) { definition->document (h); } |
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355 |
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356 void clear (void); |
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357 |
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358 void alias (symbol_record *s, bool mark_to_clear = false); |
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359 |
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360 void mark_as_formal_parameter (void); |
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361 bool is_formal_parameter (void) const { return formal_param; } |
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362 |
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363 void mark_as_automatic_variable (void); |
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364 bool is_automatic_variable (void) const { return automatic_variable; } |
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365 |
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195
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366 void mark_as_linked_to_global (void); |
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367 bool is_linked_to_global (void) const { return linked_to_global; } |
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368 |
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369 void mark_as_static (void); |
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370 bool is_static (void) const { return tagged_static; } |
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371 void unmark_static (void) { tagged_static = false; } |
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372 |
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373 bool is_matrix_type (void) const |
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374 { return definition->is_matrix_type (); } |
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375 |
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376 bool is_sparse_type (void) const |
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377 { return definition->is_sparse_type (); } |
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378 |
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379 bool is_complex_type (void) const |
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380 { return definition->is_complex_type (); } |
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381 |
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382 std::string class_name (void) const |
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383 { return definition->class_name (); } |
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384 |
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385 Matrix size (void) const |
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386 { return definition->size (); } |
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387 |
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388 size_t byte_size (void) const |
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389 { return definition->byte_size (); }; |
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390 |
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391 octave_idx_type numel (void) const |
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392 { return definition->numel (); }; |
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393 |
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394 octave_idx_type capacity (void) const |
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395 { return definition->capacity (); }; |
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396 |
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397 dim_vector dims (void) const { return definition->dims (); } |
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398 |
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399 int dimensions_string_req_first_space (int print_dims) const; |
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400 |
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401 int dimensions_string_req_total_space (int print_dims) const; |
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402 |
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403 std::string make_dimensions_string (int print_dims) const; |
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404 |
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405 octave_idx_type rows (void) const { return definition->rows (); } |
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406 octave_idx_type columns (void) const { return definition->columns (); } |
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407 |
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408 std::string type_name (void) const { return definition->type_name (); } |
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409 |
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410 std::string type_as_string (void) const |
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411 { return definition->type_as_string (); } |
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412 |
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413 void type (std::ostream& os, bool pr_type_info, bool quiet, bool pr_orig_txt) |
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414 { definition->type (os, name (), pr_type_info, quiet, pr_orig_txt); } |
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415 |
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416 std::string which (void) { return definition->which (name ()); } |
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417 |
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418 void which (std::ostream& os) { definition->which (os, name ()); } |
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419 |
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420 octave_value& variable_value (void); |
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421 octave_lvalue variable_reference (void); |
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422 |
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423 symbol_record *next (void) const { return next_elem; } |
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424 |
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3011
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425 void chain (symbol_record *s) { next_elem = s; } |
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195
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426 |
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220
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427 void push_context (void); |
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428 |
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220
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429 void pop_context (void); |
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430 |
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431 void print_symbol_info_line (std::ostream& os, |
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432 std::list<whos_parameter>& params) const; |
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3013
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433 |
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3933
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434 void print_info (std::ostream& os, |
|
|
435 const std::string& prefix = std::string ()) const; |
|
3239
|
436 |
|
8
|
437 private: |
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438 |
|
2893
|
439 unsigned int formal_param : 1; |
|
5861
|
440 unsigned int automatic_variable : 1; |
|
2893
|
441 unsigned int linked_to_global : 1; |
|
|
442 unsigned int tagged_static : 1; |
|
4234
|
443 unsigned int can_hide_function : 1; |
|
5399
|
444 unsigned int visible : 1; |
|
6257
|
445 unsigned int eternal : 1; |
|
195
|
446 |
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3523
|
447 std::string nm; |
|
3011
|
448 change_function chg_fcn; |
|
195
|
449 symbol_def *definition; |
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8
|
450 symbol_record *next_elem; |
|
395
|
451 |
|
3011
|
452 // This should maybe be one stack with a structure containing all the |
|
|
453 // items we need to save for recursive calls... |
|
4214
|
454 std::stack <symbol_def *> context; |
|
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455 std::stack <unsigned int> global_link_context; |
|
8
|
456 |
|
5397
|
457 std::stack <symbol_record *> aliases_to_clear; |
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|
458 |
|
|
459 void push_alias_to_clear (symbol_record *s) |
|
|
460 { aliases_to_clear.push (s); } |
|
|
461 |
|
3011
|
462 bool read_only_error (const char *action); |
|
195
|
463 |
|
5397
|
464 void maybe_delete_def (void) |
|
|
465 { |
|
|
466 if (--definition->count <= 0) |
|
|
467 delete definition; |
|
|
468 } |
|
|
469 |
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3011
|
470 // No copying! |
|
|
471 |
|
|
472 symbol_record (const symbol_record& s); |
|
195
|
473 |
|
8
|
474 symbol_record& operator = (const symbol_record& s); |
|
|
475 }; |
|
|
476 |
|
767
|
477 // A symbol table. |
|
200
|
478 |
|
|
479 #define SYMTAB_LOCAL_SCOPE 1 |
|
|
480 #define SYMTAB_GLOBAL_SCOPE 2 |
|
|
481 |
|
|
482 #define SYMTAB_ALL_SCOPES (SYMTAB_LOCAL_SCOPE | SYMTAB_GLOBAL_SCOPE) |
|
|
483 |
|
3011
|
484 #define SYMTAB_ALL_TYPES (symbol_record::USER_FUNCTION \ |
|
|
485 | symbol_record::USER_VARIABLE \ |
|
3325
|
486 | symbol_record::DLD_FUNCTION \ |
|
3011
|
487 | symbol_record::BUILTIN_FUNCTION \ |
|
4208
|
488 | symbol_record::COMMAND \ |
|
5102
|
489 | symbol_record::RAWCOMMAND \ |
|
5864
|
490 | symbol_record::MAPPER_FUNCTION \ |
|
|
491 | symbol_record::MEX_FUNCTION) |
|
200
|
492 |
|
5794
|
493 #define SYMTAB_VARIABLES (symbol_record::USER_VARIABLE) |
|
1412
|
494 |
|
8
|
495 class |
|
6109
|
496 OCTINTERP_API |
|
8
|
497 symbol_table |
|
|
498 { |
|
|
499 public: |
|
|
500 |
|
4238
|
501 symbol_table (unsigned int tab_size = 128, |
|
|
502 const std::string& nm = std::string ()) |
|
|
503 : table_size (tab_size), table (new symbol_record [table_size]), |
|
|
504 table_name (nm) |
|
4009
|
505 { |
|
|
506 assert ((tab_size % 2) == 0); |
|
4238
|
507 |
|
|
508 if (table_name.empty ()) |
|
|
509 { |
|
5765
|
510 std::ostringstream buf; |
|
|
511 buf << symtab_count++; |
|
|
512 table_name = buf.str (); |
|
4238
|
513 } |
|
4009
|
514 } |
|
3011
|
515 |
|
5013
|
516 ~symbol_table (void); |
|
8
|
517 |
|
3523
|
518 symbol_record *lookup (const std::string& nm, bool insert = false, |
|
2856
|
519 bool warn = false); |
|
8
|
520 |
|
3523
|
521 void rename (const std::string& old_name, const std::string& new_name); |
|
572
|
522 |
|
4009
|
523 void clear (void); |
|
|
524 |
|
|
525 void clear_variables (void); |
|
|
526 void clear_functions (void); |
|
6072
|
527 void clear_mex_functions (void); |
|
4009
|
528 void clear_globals (void); |
|
|
529 |
|
|
530 bool clear (const std::string& nm); |
|
|
531 |
|
|
532 bool clear_variable (const std::string& nm); |
|
|
533 bool clear_function (const std::string& nm); |
|
|
534 bool clear_global (const std::string& nm); |
|
|
535 |
|
|
536 bool clear_variable_pattern (const std::string& pat); |
|
|
537 bool clear_function_pattern (const std::string& pat); |
|
|
538 bool clear_global_pattern (const std::string& pat); |
|
8
|
539 |
|
164
|
540 int size (void) const; |
|
8
|
541 |
|
3013
|
542 Array<symbol_record *> |
|
4913
|
543 subsymbol_list (const string_vector& pats = string_vector (), |
|
|
544 unsigned int type = SYMTAB_ALL_TYPES, |
|
|
545 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
|
546 |
|
|
547 Array<symbol_record *> |
|
3355
|
548 symbol_list (const string_vector& pats = string_vector (), |
|
3013
|
549 unsigned int type = SYMTAB_ALL_TYPES, |
|
|
550 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
|
551 |
|
195
|
552 |
|
1755
|
553 string_vector |
|
3355
|
554 name_list (const string_vector& pats = string_vector (), |
|
3013
|
555 bool sort = false, unsigned int type = SYMTAB_ALL_TYPES, |
|
|
556 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
605
|
557 |
|
4009
|
558 string_vector |
|
|
559 user_function_name_list (void) const |
|
|
560 { |
|
|
561 return name_list |
|
|
562 (string_vector (), false, |
|
5864
|
563 symbol_record::USER_FUNCTION|symbol_record::DLD_FUNCTION|symbol_record::MEX_FUNCTION, |
|
4009
|
564 SYMTAB_ALL_SCOPES); |
|
|
565 } |
|
|
566 |
|
|
567 string_vector |
|
|
568 global_variable_name_list (void) const |
|
|
569 { |
|
|
570 return name_list |
|
|
571 (string_vector (), false, SYMTAB_VARIABLES, SYMTAB_GLOBAL_SCOPE); |
|
|
572 } |
|
|
573 |
|
|
574 string_vector |
|
|
575 variable_name_list (void) const |
|
|
576 { |
|
|
577 return name_list |
|
|
578 (string_vector (), false, SYMTAB_VARIABLES, SYMTAB_LOCAL_SCOPE); |
|
|
579 } |
|
3011
|
580 |
|
|
581 int maybe_list (const char *header, const string_vector& argv, |
|
3523
|
582 std::ostream& os, bool show_verbose, |
|
3011
|
583 unsigned type, unsigned scope); |
|
|
584 |
|
3523
|
585 Array<symbol_record *> glob (const std::string& pat = std::string ("*"), |
|
3355
|
586 unsigned int type = SYMTAB_ALL_TYPES, |
|
|
587 unsigned int scope = SYMTAB_ALL_SCOPES) const; |
|
8
|
588 |
|
220
|
589 void push_context (void); |
|
3011
|
590 |
|
220
|
591 void pop_context (void); |
|
|
592 |
|
5861
|
593 // Create a new symbol table with the same entries. Only the symbol |
|
|
594 // names and some attributes are copied, not values. |
|
|
595 symbol_table *dup (void); |
|
|
596 |
|
|
597 // Inherit some values from the parent_sym_tab. |
|
|
598 void inherit (symbol_table *parent_sym_tab); |
|
|
599 |
|
3941
|
600 void print_info (std::ostream& os) const; |
|
3011
|
601 |
|
8
|
602 private: |
|
|
603 |
|
3011
|
604 unsigned int table_size; |
|
|
605 |
|
|
606 symbol_record *table; |
|
|
607 |
|
4238
|
608 std::string table_name; |
|
|
609 |
|
|
610 static unsigned long int symtab_count; |
|
|
611 |
|
4913
|
612 void |
|
|
613 print_descriptor (std::ostream& os, |
|
|
614 std::list<whos_parameter> params) const; |
|
|
615 |
|
|
616 std::list<whos_parameter> |
|
|
617 parse_whos_line_format (Array<symbol_record *>& symbols) const; |
|
|
618 |
|
3523
|
619 unsigned int hash (const std::string& s); |
|
8
|
620 |
|
3011
|
621 // No copying! |
|
8
|
622 |
|
3011
|
623 symbol_table (const symbol_table&); |
|
1962
|
624 |
|
3011
|
625 symbol_table& operator = (const symbol_table&); |
|
|
626 }; |
|
2790
|
627 |
|
4913
|
628 // Defines layout for the whos/who -long command. |
|
|
629 extern std::string Vwhos_line_format; |
|
|
630 |
|
8
|
631 #endif |
|
|
632 |
|
|
633 /* |
|
|
634 ;;; Local Variables: *** |
|
|
635 ;;; mode: C++ *** |
|
|
636 ;;; End: *** |
|
|
637 */ |
