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annotate src/pt-cmd.h @ 12312:b10ea6efdc58 release-3-4-x ss-3-3-91

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version is now 3.3.91
author John W. Eaton <jwe@octave.org>
date Mon, 31 Jan 2011 08:36:58 -0500
parents fd0a3ac60b0e
children 72c96de7a403
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1 /*
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2
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3 Copyright (C) 1994-2011 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_tree_cmd_h)
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24 #define octave_tree_cmd_h 1
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25
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26 #include <string>
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27
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28 class tree_walker;
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29
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30 #include "ov-fcn.h"
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31 #include "pt.h"
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32 #include "pt-bp.h"
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33 #include "symtab.h"
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34
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35 // A base class for commands.
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36
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37 class
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38 tree_command : public tree
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39 {
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40 public:
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41
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42 tree_command (int l = -1, int c = -1)
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43 : tree (l, c) { }
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44
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45 virtual ~tree_command (void) { }
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46
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47 virtual tree_command *dup (symbol_table::scope_id,
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48 symbol_table::context_id context) const = 0;
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49
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50 private:
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51
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52 // No copying!
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53
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54 tree_command (const tree_command&);
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55
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56 tree_command& operator = (const tree_command&);
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57 };
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58
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59 // No-op.
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60
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61 class
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62 tree_no_op_command : public tree_command
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63 {
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64 public:
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65
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66 tree_no_op_command (const std::string& cmd = "no_op", int l = -1, int c = -1)
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67 : tree_command (l, c), eof (cmd == "endfunction" || cmd == "endscript"),
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68 orig_cmd (cmd) { }
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69
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70 ~tree_no_op_command (void) { }
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71
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72 tree_command *dup (symbol_table::scope_id scope,
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73 symbol_table::context_id context) const;
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74
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75 void accept (tree_walker& tw);
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76
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77 bool is_end_of_fcn_or_script (void) const { return eof; }
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78
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79 std::string original_command (void) { return orig_cmd; }
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81 private:
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82
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83 bool eof;
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84
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85 std::string orig_cmd;
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86
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87 // No copying!
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88
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89 tree_no_op_command (const tree_no_op_command&);
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90
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91 tree_no_op_command& operator = (const tree_no_op_command&);
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92 };
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93
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94 // Function definition.
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95
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96 class
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97 tree_function_def : public tree_command
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98 {
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99 public:
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100
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101 tree_function_def (octave_function *f, int l = -1, int c = -1)
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102 : tree_command (l, c), fcn (f) { }
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103
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104 ~tree_function_def (void) { }
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105
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106 tree_command *dup (symbol_table::scope_id scope,
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107 symbol_table::context_id context) const;
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108
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109 void accept (tree_walker& tw);
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110
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111 octave_value function (void) { return fcn; }
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112
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113 private:
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114
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115 octave_value fcn;
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116
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117 tree_function_def (const octave_value& v, int l = -1, int c = -1)
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118 : tree_command (l, c), fcn (v) { }
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119
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120 // No copying!
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121
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122 tree_function_def (const tree_function_def&);
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123
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124 tree_function_def& operator = (const tree_function_def&);
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125 };
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126
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127 #endif