Mercurial > octave
annotate libinterp/octave-value/ov-fcn-handle.h @ 25383:d3a035528c9a
use reference to tree_evaluator instead of pointer
Always use a reference to the evaluator instead of a pointer because
it is required to and will always exist everywhere it is used.
Files affected: ov-fcn-handle.cc, ov-fcn-handle.h, pt-decl.h,
pt-eval.cc, pt-exp.cc, pt-exp.h, pt-id.cc, pt-id.h, pt-idx.cc,
pt-idx.h, pt-tm-const.cc, pt-tm-const.h.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 15 May 2018 18:09:04 -0400 |
parents | 6652d3823428 |
children | 7eeb89b0d2d5 |
rev | line source |
---|---|
4343 | 1 /* |
2 | |
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3 Copyright (C) 2003-2018 John W. Eaton |
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4 Copyright (C) 2009 VZLU Prague |
4343 | 5 |
6 This file is part of Octave. | |
7 | |
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8 Octave is free software: you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by |
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10 the Free Software Foundation, either version 3 of the License, or |
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11 (at your option) any later version. |
4343 | 12 |
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13 Octave is distributed in the hope that it will be useful, but |
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14 WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
4343 | 17 |
18 You should have received a copy of the GNU General Public License | |
7016 | 19 along with Octave; see the file COPYING. If not, see |
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20 <https://www.gnu.org/licenses/>. |
4343 | 21 |
22 */ | |
23 | |
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24 #if ! defined (octave_ov_fcn_handle_h) |
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25 #define octave_ov_fcn_handle_h 1 |
4343 | 26 |
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27 #include "octave-config.h" |
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28 |
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29 #include <iosfwd> |
4343 | 30 #include <string> |
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31 #include <memory> |
4343 | 32 |
33 #include "ov-base.h" | |
4654 | 34 #include "ov-base-mat.h" |
4343 | 35 #include "ov-fcn.h" |
4654 | 36 #include "ov-typeinfo.h" |
4343 | 37 |
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38 namespace octave |
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39 { |
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40 class tree_evaluator; |
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41 } |
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42 |
4343 | 43 // Function handles. |
44 | |
4925 | 45 class |
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46 OCTINTERP_API |
4925 | 47 octave_fcn_handle : public octave_base_value |
4654 | 48 { |
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49 private: |
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50 |
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51 typedef std::map<std::string, octave_value> str_ov_map; |
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52 |
4654 | 53 public: |
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54 |
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55 static const std::string anonymous; |
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56 |
4930 | 57 octave_fcn_handle (void) |
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58 : fcn (), nm (), has_overloads (false), overloads () { } |
4654 | 59 |
5007 | 60 octave_fcn_handle (const std::string& n) |
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61 : fcn (), nm (n), has_overloads (false), overloads () { } |
5007 | 62 |
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63 octave_fcn_handle (const octave_value& f, const std::string& n = anonymous); |
4654 | 64 |
4967 | 65 octave_fcn_handle (const octave_fcn_handle& fh) |
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66 : octave_base_value (fh), fcn (fh.fcn), nm (fh.nm), |
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67 has_overloads (fh.has_overloads), overloads () |
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68 { |
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69 for (int i = 0; i < btyp_num_types; i++) |
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70 builtin_overloads[i] = fh.builtin_overloads[i]; |
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71 |
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72 overloads = fh.overloads; |
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73 } |
4967 | 74 |
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75 ~octave_fcn_handle (void) = default; |
4654 | 76 |
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77 octave_base_value * clone (void) const |
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78 { return new octave_fcn_handle (*this); } |
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79 octave_base_value * empty_clone (void) const |
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80 { return new octave_fcn_handle (); } |
4967 | 81 |
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82 octave_value subsref (const std::string& type, |
10313 | 83 const std::list<octave_value_list>& idx) |
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84 { |
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85 octave_value_list tmp = subsref (type, idx, 1); |
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86 return tmp.length () > 0 ? tmp(0) : octave_value (); |
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87 } |
4924 | 88 |
89 octave_value_list subsref (const std::string& type, | |
10313 | 90 const std::list<octave_value_list>& idx, |
91 int nargout); | |
4924 | 92 |
4925 | 93 bool is_defined (void) const { return true; } |
4654 | 94 |
95 bool is_function_handle (void) const { return true; } | |
96 | |
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97 builtin_type_t builtin_type (void) const { return btyp_func_handle; } |
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98 |
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99 bool is_overloaded (void) const { return has_overloads; } |
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100 |
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101 dim_vector dims (void) const; |
5654 | 102 |
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103 octave_function * function_value (bool = false) |
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104 { return fcn.function_value (); } |
4930 | 105 |
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106 octave_user_function * user_function_value (bool = false) |
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107 { return fcn.user_function_value (); } |
6625 | 108 |
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109 octave_fcn_handle * fcn_handle_value (bool = false) { return this; } |
4654 | 110 |
5007 | 111 octave_value fcn_val (void) const { return fcn; } |
112 | |
4933 | 113 std::string fcn_name (void) const { return nm; } |
4930 | 114 |
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115 void set_overload (builtin_type_t btyp, const octave_value& ov_fcn) |
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116 { |
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117 if (btyp != btyp_unknown) |
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118 { |
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119 has_overloads = true; |
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120 builtin_overloads[btyp] = ov_fcn; |
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121 } |
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122 |
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123 } |
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124 |
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125 void set_overload (const std::string& dispatch_type, |
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126 const octave_value& ov_fcn) |
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127 { |
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128 has_overloads = true; |
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129 overloads[dispatch_type] = ov_fcn; |
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130 } |
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131 |
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132 bool is_equal_to (const octave_fcn_handle&) const; |
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133 |
6974 | 134 bool save_ascii (std::ostream& os); |
4988 | 135 |
136 bool load_ascii (std::istream& is); | |
137 | |
138 bool save_binary (std::ostream& os, bool& save_as_floats); | |
139 | |
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140 bool load_binary (std::istream& is, bool swap, |
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141 octave::mach_info::float_format fmt); |
4988 | 142 |
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143 bool save_hdf5 (octave_hdf5_id loc_id, const char *name, bool save_as_floats); |
4988 | 144 |
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145 bool load_hdf5 (octave_hdf5_id loc_id, const char *name); |
4988 | 146 |
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147 void print (std::ostream& os, bool pr_as_read_syntax = false); |
4654 | 148 |
149 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; | |
150 | |
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151 // Simple function handles are printed without a newline. |
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152 bool print_as_scalar (void) const { return nm != anonymous; } |
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153 |
4654 | 154 private: |
4343 | 155 |
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156 bool set_fcn (const std::string& octaveroot, const std::string& fpath); |
6625 | 157 |
4612 | 158 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
4925 | 159 |
4933 | 160 protected: |
4930 | 161 |
4925 | 162 // The function we are handling. |
4930 | 163 octave_value fcn; |
4925 | 164 |
165 // The name of the handle, including the "@". | |
166 std::string nm; | |
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167 |
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168 // Whether the function is overloaded at all. |
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169 bool has_overloads; |
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170 |
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171 // Overloads for builtin types. We use array to make lookup faster. |
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172 octave_value builtin_overloads[btyp_num_types]; |
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173 |
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174 // Overloads for other classes. |
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175 str_ov_map overloads; |
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176 |
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177 bool parse_anon_fcn_handle (const std::string& fcn_text); |
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178 |
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179 virtual octave_value_list call (int nargout, const octave_value_list& args); |
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180 |
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181 friend octave_value make_fcn_handle (const std::string &, bool); |
4343 | 182 }; |
183 | |
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184 extern octave_value make_fcn_handle (const std::string& nm, |
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185 bool local_funcs = true); |
4343 | 186 |
10960 | 187 class |
188 OCTINTERP_API | |
189 octave_fcn_binder : public octave_fcn_handle | |
190 { | |
191 private: | |
192 // Private ctor. | |
193 octave_fcn_binder (const octave_value& f, const octave_value& root, | |
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194 const octave_value_list& templ, |
10960 | 195 const std::vector<int>& mask, int exp_nargin); |
196 | |
197 public: | |
198 | |
199 // Factory method. | |
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200 static octave_fcn_handle * maybe_binder (const octave_value& f, |
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201 octave::tree_evaluator& tw); |
10960 | 202 |
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203 protected: |
10960 | 204 |
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205 octave_value_list call (int nargout, const octave_value_list& args); |
10960 | 206 |
207 octave_value root_handle; | |
208 octave_value_list arg_template; | |
209 std::vector<int> arg_mask; | |
210 int expected_nargin; | |
211 }; | |
4343 | 212 #endif |