Mercurial > hg > octave-jordi
annotate src/toplev.h @ 9318:1a1c839625b3
fix exist for function handles and inline functions
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 08 Jun 2009 15:12:16 -0400 |
parents | 1c2d2c9f4a8d |
children | d57f0c56195f |
rev | line source |
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1 | 1 /* |
2 | |
7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, |
8920 | 4 2003, 2004, 2005, 2006, 2007, 2008 John W. Eaton |
1 | 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. | |
1 | 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/>. | |
1 | 21 |
22 */ | |
23 | |
1670 | 24 #if !defined (octave_toplev_h) |
25 #define octave_toplev_h 1 | |
1 | 26 |
1355 | 27 #include <cstdio> |
1 | 28 |
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29 #include <deque> |
3503 | 30 #include <string> |
31 | |
2086 | 32 class octave_value; |
2796 | 33 class octave_value_list; |
5743 | 34 class octave_function; |
5744 | 35 class octave_user_script; |
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36 class tree_statement; |
578 | 37 class tree_statement_list; |
1572 | 38 class charMatrix; |
1 | 39 |
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40 #include "quit.h" |
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41 |
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42 #include "input.h" |
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43 #include "oct-map.h" |
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44 |
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45 |
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46 typedef void (*octave_exit_func) (int); |
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47 extern OCTINTERP_API octave_exit_func octave_exit; |
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48 |
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49 extern OCTINTERP_API bool quit_allowed; |
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50 |
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51 // quit is a lot like an interrupt, so we subclass it to simplify possible |
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52 // handling. |
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53 class octave_quit_exception |
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54 : public octave_interrupt_exception |
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55 { |
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56 public: |
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57 int status; |
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58 octave_quit_exception (int s) : status (s) { } |
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59 }; |
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60 |
7250 | 61 extern OCTINTERP_API void |
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62 clean_up_and_exit (int); |
574 | 63 |
7250 | 64 extern OCTINTERP_API void recover_from_exception (void); |
7202 | 65 |
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66 extern OCTINTERP_API int main_loop (void); |
1907 | 67 |
7250 | 68 extern OCTINTERP_API void |
2796 | 69 do_octave_atexit (void); |
2077 | 70 |
7409 | 71 extern OCTINTERP_API void |
72 octave_add_atexit_function (const std::string& fname); | |
73 | |
74 extern OCTINTERP_API bool | |
75 octave_remove_atexit_function (const std::string& fname); | |
76 | |
1 | 77 // Current command to execute. |
7250 | 78 extern OCTINTERP_API tree_statement_list *global_command; |
1 | 79 |
4217 | 80 // TRUE means we are ready to interpret commands, but not everything |
81 // is ready for interactive use. | |
7185 | 82 extern OCTINTERP_API bool octave_interpreter_ready; |
4217 | 83 |
4172 | 84 // TRUE means we've processed all the init code and we are good to go. |
7185 | 85 extern OCTINTERP_API bool octave_initialized; |
4172 | 86 |
5743 | 87 class |
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88 OCTINTERP_API |
5743 | 89 octave_call_stack |
90 { | |
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91 private: |
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92 |
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93 struct call_stack_elt |
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94 { |
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95 call_stack_elt (octave_function *f, symbol_table::scope_id s, |
7901 | 96 symbol_table::context_id c, size_t p = 0) |
97 : fcn (f), stmt (0), scope (s), context (c), prev (p) { } | |
98 | |
99 call_stack_elt (const call_stack_elt& elt) | |
100 : fcn (elt.fcn), stmt (elt.stmt), scope (elt.scope), | |
101 context (elt.context), prev (elt.prev) { } | |
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102 |
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103 octave_function *fcn; |
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104 tree_statement *stmt; |
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105 symbol_table::scope_id scope; |
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106 symbol_table::context_id context; |
7901 | 107 size_t prev; |
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108 }; |
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109 |
5743 | 110 protected: |
111 | |
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112 octave_call_stack (void) : cs (), curr_frame (0) { } |
5743 | 113 |
114 public: | |
115 | |
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116 typedef std::deque<call_stack_elt>::iterator iterator; |
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117 typedef std::deque<call_stack_elt>::const_iterator const_iterator; |
7901 | 118 |
119 typedef std::deque<call_stack_elt>::reverse_iterator reverse_iterator; | |
120 typedef std::deque<call_stack_elt>::const_reverse_iterator const_reverse_iterator; | |
121 | |
5743 | 122 static bool instance_ok (void) |
123 { | |
124 bool retval = true; | |
125 | |
126 if (! instance) | |
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127 { |
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128 instance = new octave_call_stack (); |
5743 | 129 |
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130 if (instance) |
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131 instance->do_push (0, symbol_table::top_scope (), 0); |
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132 else |
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133 { |
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134 ::error ("unable to create call stack object!"); |
5743 | 135 |
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136 retval = false; |
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137 } |
5743 | 138 } |
139 | |
140 return retval; | |
141 } | |
142 | |
143 // Current function (top of stack). | |
5744 | 144 static octave_function *current (void) { return top (); } |
5743 | 145 |
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146 // Current statement (top of stack). |
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147 static tree_statement *current_statement (void) { return top_statement (); } |
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148 |
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149 // Current line in current function. |
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150 static int current_line (void) |
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151 { |
7877 | 152 return instance_ok () ? instance->do_current_line () : -1; |
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153 } |
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154 |
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155 // Current column in current function. |
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156 static int current_column (void) |
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157 { |
7877 | 158 return instance_ok () ? instance->do_current_column () : -1; |
159 } | |
160 | |
161 // Line in user code caller. | |
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162 static int caller_user_code_line (void) |
7877 | 163 { |
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164 return instance_ok () ? instance->do_caller_user_code_line () : -1; |
7877 | 165 } |
166 | |
167 // Column in user code caller. | |
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168 static int caller_user_code_column (void) |
7877 | 169 { |
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170 return instance_ok () ? instance->do_caller_user_code_column () : -1; |
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171 } |
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172 |
5743 | 173 // Caller function, may be built-in. |
174 static octave_function *caller (void) | |
175 { | |
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176 return instance_ok () ? instance->do_caller () : 0; |
5743 | 177 } |
178 | |
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179 static size_t current_frame (void) |
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180 { |
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181 return instance_ok () ? instance->do_current_frame () : 0; |
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182 } |
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183 |
7890 | 184 static size_t size (void) |
185 { | |
186 return instance_ok () ? instance->do_size () : 0; | |
187 } | |
188 | |
7901 | 189 static size_t num_user_code_frames (octave_idx_type& curr_user_frame) |
190 { | |
191 return instance_ok () | |
192 ? instance->do_num_user_code_frames (curr_user_frame) : 0; | |
193 } | |
194 | |
195 static symbol_table::scope_id current_scope (void) | |
196 { | |
197 return instance_ok () ? instance->do_current_scope () : 0; | |
198 } | |
199 | |
200 static symbol_table::context_id current_context (void) | |
201 { | |
202 return instance_ok () ? instance->do_current_context () : 0; | |
203 } | |
204 | |
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205 // Function at location N on the call stack (N == 0 is current), may |
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206 // be built-in. |
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207 static octave_function *element (size_t n) |
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208 { |
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209 return instance_ok () ? instance->do_element (n) : 0; |
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210 } |
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211 |
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212 // First user-defined function on the stack. |
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213 static octave_user_code *caller_user_code (size_t nskip = 0) |
5743 | 214 { |
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215 return instance_ok () ? instance->do_caller_user_code (nskip) : 0; |
5743 | 216 } |
217 | |
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218 static void |
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219 push (octave_function *f, |
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220 symbol_table::scope_id scope = symbol_table::current_scope (), |
7901 | 221 symbol_table::context_id context = symbol_table::current_context ()) |
5743 | 222 { |
223 if (instance_ok ()) | |
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224 instance->do_push (f, scope, context); |
5743 | 225 } |
226 | |
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227 static void |
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228 push (symbol_table::scope_id scope = symbol_table::current_scope (), |
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229 symbol_table::context_id context = symbol_table::current_context ()) |
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230 { |
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231 if (instance_ok ()) |
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232 instance->do_push (0, scope, context); |
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233 } |
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234 |
5744 | 235 static octave_function *top (void) |
236 { | |
237 return instance_ok () ? instance->do_top (): 0; | |
238 } | |
239 | |
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240 static tree_statement *top_statement (void) |
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241 { |
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242 return instance_ok () ? instance->do_top_statement (): 0; |
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243 } |
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244 |
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245 static void set_statement (tree_statement *s) |
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246 { |
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247 if (instance_ok ()) |
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248 instance->do_set_statement (s); |
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249 } |
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250 |
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251 static bool goto_frame (size_t n = 0, bool verbose = false) |
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252 { |
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253 return instance_ok () ? instance->do_goto_frame (n, verbose) : false; |
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254 } |
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255 |
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256 static bool goto_frame_relative (int n, bool verbose = false) |
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257 { |
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258 return instance_ok () |
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259 ? instance->do_goto_frame_relative (n, verbose) : false; |
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260 } |
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261 |
7901 | 262 static void goto_caller_frame (void) |
263 { | |
264 if (instance_ok ()) | |
265 instance->do_goto_caller_frame (); | |
266 } | |
267 | |
268 static void goto_base_frame (void) | |
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269 { |
7901 | 270 if (instance_ok ()) |
271 instance->do_goto_base_frame (); | |
272 } | |
273 | |
274 static Octave_map backtrace (size_t nskip, octave_idx_type& curr_user_frame) | |
275 { | |
276 return instance_ok () | |
277 ? instance->do_backtrace (nskip, curr_user_frame) : Octave_map (); | |
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278 } |
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279 |
5743 | 280 static void pop (void) |
281 { | |
282 if (instance_ok ()) | |
283 instance->do_pop (); | |
284 } | |
285 | |
286 // A function for popping the top of the call stack that is suitable | |
287 // for use as an unwind_protect handler. | |
288 static void unwind_pop (void *) { pop (); } | |
289 | |
290 static void clear (void) | |
291 { | |
292 if (instance_ok ()) | |
293 instance->do_clear (); | |
294 } | |
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295 |
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296 static void backtrace_error_message (void) |
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297 { |
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298 if (instance_ok ()) |
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299 instance->do_backtrace_error_message (); |
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300 } |
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301 |
5743 | 302 private: |
303 | |
304 // The current call stack. | |
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305 std::deque<call_stack_elt> cs; |
5743 | 306 |
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307 size_t curr_frame; |
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308 |
5743 | 309 static octave_call_stack *instance; |
310 | |
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311 int do_current_line (void) const; |
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312 |
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313 int do_current_column (void) const; |
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314 |
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315 int do_caller_user_code_line (void) const; |
7877 | 316 |
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317 int do_caller_user_code_column (void) const; |
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319 octave_function *do_caller (void) const |
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320 { |
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321 return curr_frame > 1 ? cs[curr_frame-1].fcn : cs[0].fcn; |
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322 } |
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323 |
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324 size_t do_current_frame (void) { return curr_frame; } |
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325 |
7890 | 326 size_t do_size (void) { return cs.size (); } |
327 | |
7901 | 328 size_t do_num_user_code_frames (octave_idx_type& curr_user_frame) const; |
329 | |
330 symbol_table::scope_id do_current_scope (void) const | |
331 { | |
332 return curr_frame > 0 && curr_frame < cs.size () | |
333 ? cs[curr_frame].scope : 0; | |
334 } | |
335 | |
336 symbol_table::context_id do_current_context (void) const | |
337 { | |
338 return curr_frame > 0 && curr_frame < cs.size () | |
339 ? cs[curr_frame].context : 0; | |
340 } | |
341 | |
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342 octave_function *do_element (size_t n) |
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343 { |
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344 octave_function *retval = 0; |
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345 |
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346 if (cs.size () > n) |
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347 { |
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348 call_stack_elt& elt = cs[n]; |
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349 retval = elt.fcn; |
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350 } |
5743 | 351 |
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352 return retval; |
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353 } |
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354 |
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355 octave_user_code *do_caller_user_code (size_t nskip) const; |
5744 | 356 |
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357 void do_push (octave_function *f, symbol_table::scope_id scope, |
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358 symbol_table::context_id context) |
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359 { |
7901 | 360 size_t prev_frame = curr_frame; |
361 curr_frame = cs.size (); | |
362 cs.push_back (call_stack_elt (f, scope, context, prev_frame)); | |
363 symbol_table::set_scope_and_context (scope, context); | |
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364 } |
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365 |
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366 octave_function *do_top (void) const |
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367 { |
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368 octave_function *retval = 0; |
5744 | 369 |
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370 if (! cs.empty ()) |
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371 { |
7890 | 372 const call_stack_elt& elt = cs.back (); |
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373 retval = elt.fcn; |
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374 } |
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375 |
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376 return retval; |
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377 } |
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378 |
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379 tree_statement *do_top_statement (void) const |
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380 { |
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381 tree_statement *retval = 0; |
5743 | 382 |
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383 if (! cs.empty ()) |
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384 { |
7890 | 385 const call_stack_elt& elt = cs.back (); |
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386 retval = elt.stmt; |
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387 } |
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388 |
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389 return retval; |
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390 } |
5743 | 391 |
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392 void do_set_statement (tree_statement *s) |
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393 { |
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394 if (! cs.empty ()) |
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395 { |
7890 | 396 call_stack_elt& elt = cs.back (); |
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397 elt.stmt = s; |
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398 } |
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399 } |
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400 |
7901 | 401 Octave_map do_backtrace (size_t nskip, |
402 octave_idx_type& curr_user_frame) const; | |
5744 | 403 |
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404 bool do_goto_frame (size_t n, bool verbose); |
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405 |
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406 bool do_goto_frame_relative (int n, bool verbose); |
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407 |
7901 | 408 void do_goto_caller_frame (void); |
409 | |
410 void do_goto_base_frame (void); | |
411 | |
5743 | 412 void do_pop (void) |
413 { | |
7901 | 414 if (cs.size () > 1) |
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415 { |
7901 | 416 const call_stack_elt& elt = cs.back (); |
417 curr_frame = elt.prev; | |
7890 | 418 cs.pop_back (); |
7901 | 419 const call_stack_elt& new_elt = cs[curr_frame]; |
420 symbol_table::set_scope_and_context (new_elt.scope, new_elt.context); | |
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421 } |
5743 | 422 } |
423 | |
424 void do_clear (void) { cs.clear (); } | |
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425 |
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426 void do_backtrace_error_message (void) const; |
5743 | 427 }; |
428 | |
1 | 429 #endif |
430 | |
431 /* | |
432 ;;; Local Variables: *** | |
433 ;;; mode: C++ *** | |
434 ;;; End: *** | |
435 */ |