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annotate libinterp/parse-tree/pt-cmd.h @ 22323:bac0d6f07a3e

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maint: Update copyright notices for 2016.
author John W. Eaton <jwe@octave.org>
date Wed, 17 Aug 2016 01:05:19 -0400
parents 1473547f50f5
children 34ce5be04942
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1 /*
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2
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3 Copyright (C) 1994-2016 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_pt_cmd_h)
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24 #define octave_pt_cmd_h 1
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25
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26 #include "octave-config.h"
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27
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28 #include <string>
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29
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30 class tree_walker;
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31
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32 #include "ov-fcn.h"
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33 #include "pt.h"
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34 #include "pt-bp.h"
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35 #include "symtab.h"
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36
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37 // A base class for commands.
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38
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39 class
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40 tree_command : public tree
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41 {
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42 public:
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43
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44 tree_command (int l = -1, int c = -1)
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45 : tree (l, c) { }
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46
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47 virtual ~tree_command (void) { }
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48
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49 virtual tree_command *dup (symbol_table::scope_id,
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50 symbol_table::context_id context) const = 0;
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51
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52 private:
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53
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54 // No copying!
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55
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56 tree_command (const tree_command&);
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57
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58 tree_command& operator = (const tree_command&);
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59 };
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60
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61 // No-op.
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62
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63 class
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64 tree_no_op_command : public tree_command
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65 {
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66 public:
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67
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68 tree_no_op_command (const std::string& cmd = "no_op", bool e = false,
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69 int l = -1, int c = -1)
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70 : tree_command (l, c), eof (e), orig_cmd (cmd) { }
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72 ~tree_no_op_command (void) { }
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73
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74 tree_command *dup (symbol_table::scope_id scope,
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75 symbol_table::context_id context) const;
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76
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77 void accept (tree_walker& tw);
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79 bool is_end_of_fcn_or_script (void) const
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80 {
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81 return (orig_cmd == "endfunction" || orig_cmd == "endscript");
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82 }
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83
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84 bool is_end_of_file (void) const { return eof; }
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85
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86 std::string original_command (void) { return orig_cmd; }
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87
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88 private:
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89
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90 bool eof;
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91
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92 std::string orig_cmd;
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93
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94 // No copying!
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95
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96 tree_no_op_command (const tree_no_op_command&);
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97
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98 tree_no_op_command& operator = (const tree_no_op_command&);
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99 };
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100
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101 // Function definition.
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102
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103 class
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104 tree_function_def : public tree_command
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105 {
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106 public:
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107
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108 tree_function_def (octave_function *f, int l = -1, int c = -1)
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109 : tree_command (l, c), fcn (f) { }
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110
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111 ~tree_function_def (void) { }
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112
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113 tree_command *dup (symbol_table::scope_id scope,
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114 symbol_table::context_id context) const;
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115
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116 void accept (tree_walker& tw);
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117
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118 octave_value function (void) { return fcn; }
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119
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120 private:
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121
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122 octave_value fcn;
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123
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124 tree_function_def (const octave_value& v, int l = -1, int c = -1)
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125 : tree_command (l, c), fcn (v) { }
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126
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127 // No copying!
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128
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129 tree_function_def (const tree_function_def&);
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130
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131 tree_function_def& operator = (const tree_function_def&);
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132 };
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133
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134 #endif