Mercurial > hg > octave-thorsten
annotate src/pt-stmt.cc @ 8658:73c4516fae10
New evaluator and debugger derived from tree-walker class
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 04 Feb 2009 00:47:53 -0500 |
| parents | 4385bb503467 |
| children | 33783e94fb16 |
| rev | line source |
|---|---|
| 2982 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
| 4 2006, 2007 John W. Eaton | |
| 2982 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 2982 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 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 |
| 20 <http://www.gnu.org/licenses/>. | |
| 2982 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
|
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28 #include <typeinfo> |
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29 |
| 4153 | 30 #include "quit.h" |
| 31 | |
| 2982 | 32 #include "defun.h" |
| 33 #include "error.h" | |
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34 #include "gripes.h" |
| 2982 | 35 #include "ov.h" |
| 36 #include "oct-lvalue.h" | |
| 37 #include "input.h" | |
| 38 #include "pager.h" | |
| 3770 | 39 #include "pt-bp.h" |
| 2982 | 40 #include "pt-cmd.h" |
| 41 #include "pt-id.h" | |
| 42 #include "pt-idx.h" | |
| 2985 | 43 #include "pt-jump.h" |
| 2982 | 44 #include "pt-pr-code.h" |
| 45 #include "pt-stmt.h" | |
| 46 #include "pt-walk.h" | |
| 3707 | 47 #include "unwind-prot.h" |
| 2982 | 48 #include "utils.h" |
| 49 #include "variables.h" | |
| 50 | |
| 51 // A list of commands to be executed. | |
| 52 | |
| 53 tree_statement::~tree_statement (void) | |
| 54 { | |
| 55 delete cmd; | |
| 56 delete expr; | |
| 3665 | 57 delete comm; |
| 2982 | 58 } |
| 59 | |
|
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60 void |
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61 tree_statement::set_print_flag (bool print_flag) |
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62 { |
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63 if (expr) |
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64 expr->set_print_flag (print_flag); |
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65 } |
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66 |
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67 bool |
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68 tree_statement::print_result (void) |
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69 { |
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70 return expr && expr->print_result (); |
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71 } |
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72 |
| 2982 | 73 int |
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74 tree_statement::line (void) const |
| 2982 | 75 { |
| 76 return cmd ? cmd->line () : (expr ? expr->line () : -1); | |
| 77 } | |
| 78 | |
| 79 int | |
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80 tree_statement::column (void) const |
| 2982 | 81 { |
| 82 return cmd ? cmd->column () : (expr ? expr->column () : -1); | |
| 83 } | |
| 84 | |
| 85 void | |
| 7736 | 86 tree_statement::maybe_echo_code (bool in_function_or_script_body) |
| 2982 | 87 { |
| 7736 | 88 if (in_function_or_script_body |
| 2982 | 89 && (Vecho_executing_commands & ECHO_FUNCTIONS)) |
| 90 { | |
| 5794 | 91 tree_print_code tpc (octave_stdout, VPS4); |
| 2982 | 92 |
| 93 accept (tpc); | |
| 94 } | |
| 95 } | |
| 96 | |
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97 bool |
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98 tree_statement::is_end_of_fcn_or_script (void) const |
| 2982 | 99 { |
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100 bool retval = false; |
| 2982 | 101 |
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102 if (cmd) |
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103 { |
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104 tree_no_op_command *no_op_cmd |
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105 = dynamic_cast<tree_no_op_command *> (cmd); |
| 2982 | 106 |
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107 if (no_op_cmd) |
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108 { |
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109 std::string type = no_op_cmd->original_command (); |
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110 |
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111 retval = (type == "endfunction" || type == "endscript"); |
| 2982 | 112 } |
| 113 } | |
| 114 | |
| 115 return retval; | |
| 116 } | |
| 117 | |
| 5861 | 118 tree_statement * |
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119 tree_statement::dup (symbol_table::scope_id scope, |
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120 symbol_table::context_id context) |
| 5861 | 121 { |
| 122 tree_statement *new_stmt = new tree_statement (); | |
| 123 | |
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124 new_stmt->cmd = cmd ? cmd->dup (scope, context) : 0; |
| 5861 | 125 |
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126 new_stmt->expr = expr ? expr->dup (scope, context) : 0; |
| 5861 | 127 |
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128 new_stmt->bp = bp; |
| 5861 | 129 |
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130 new_stmt->comm = comm ? comm->dup () : 0; |
| 5861 | 131 |
| 132 return new_stmt; | |
| 133 } | |
| 134 | |
| 2982 | 135 void |
| 136 tree_statement::accept (tree_walker& tw) | |
| 137 { | |
| 138 tw.visit_statement (*this); | |
| 139 } | |
| 140 | |
| 3770 | 141 int |
| 142 tree_statement_list::set_breakpoint (int line) | |
| 143 { | |
| 144 tree_breakpoint tbp (line, tree_breakpoint::set); | |
| 145 accept (tbp); | |
| 146 | |
| 147 return tbp.get_line (); | |
| 148 } | |
| 149 | |
| 150 void | |
| 151 tree_statement_list::delete_breakpoint (int line) | |
| 152 { | |
| 3895 | 153 if (line < 0) |
| 154 { | |
| 4212 | 155 octave_value_list bp_lst = list_breakpoints (); |
| 3895 | 156 |
| 4212 | 157 int len = bp_lst.length (); |
| 3895 | 158 |
| 4587 | 159 for (int i = 0; i < len; i++) |
| 3895 | 160 { |
| 4587 | 161 tree_breakpoint tbp (i, tree_breakpoint::clear); |
| 3895 | 162 accept (tbp); |
| 163 } | |
| 164 } | |
| 165 else | |
| 166 { | |
| 167 tree_breakpoint tbp (line, tree_breakpoint::clear); | |
| 168 accept (tbp); | |
| 169 } | |
| 3770 | 170 } |
| 171 | |
| 172 octave_value_list | |
| 173 tree_statement_list::list_breakpoints (void) | |
| 174 { | |
| 175 tree_breakpoint tbp (0, tree_breakpoint::list); | |
| 176 accept (tbp); | |
| 177 | |
| 178 return tbp.get_list (); | |
| 179 } | |
| 180 | |
| 5861 | 181 tree_statement_list * |
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182 tree_statement_list::dup (symbol_table::scope_id scope, |
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183 symbol_table::context_id context) |
| 5861 | 184 { |
| 185 tree_statement_list *new_list = new tree_statement_list (); | |
| 186 | |
| 187 new_list->function_body = function_body; | |
| 188 | |
| 189 for (iterator p = begin (); p != end (); p++) | |
| 190 { | |
| 191 tree_statement *elt = *p; | |
| 192 | |
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193 new_list->append (elt ? elt->dup (scope, context) : 0); |
| 5861 | 194 } |
| 195 | |
| 196 return new_list; | |
| 197 } | |
| 198 | |
| 2982 | 199 void |
| 200 tree_statement_list::accept (tree_walker& tw) | |
| 201 { | |
| 202 tw.visit_statement_list (*this); | |
| 203 } | |
| 204 | |
| 205 /* | |
| 206 ;;; Local Variables: *** | |
| 207 ;;; mode: C++ *** | |
| 208 ;;; End: *** | |
| 209 */ |