Mercurial > octave
annotate libinterp/parse-tree/pt.cc @ 23220:092078913d54
maint: Merge stable to default.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 22 Feb 2017 12:58:07 -0500 |
parents | ef4d915df748 3ac9f9ecfae5 |
children | 08036a7f3660 |
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2991 | 1 /* |
2 | |
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3 Copyright (C) 1996-2017 John W. Eaton |
2991 | 4 |
5 This file is part of Octave. | |
6 | |
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 |
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9 the Free Software Foundation; either version 3 of the License, or |
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10 (at your option) any later version. |
2991 | 11 |
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12 Octave is distributed in the hope that it will be useful, but |
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13 WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 GNU General Public License for more details. |
2991 | 16 |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
2991 | 20 |
21 */ | |
22 | |
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23 #if defined (HAVE_CONFIG_H) |
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24 # include "config.h" |
2991 | 25 #endif |
26 | |
3503 | 27 #include <iostream> |
5765 | 28 #include <sstream> |
2991 | 29 #include <string> |
30 | |
4748 | 31 #include "ov-fcn.h" |
2991 | 32 #include "pt.h" |
33 #include "pt-pr-code.h" | |
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34 #include "unwind-prot.h" |
2991 | 35 |
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36 namespace octave |
2991 | 37 { |
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38 // Hide the details of the string buffer so that we are less likely to |
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39 // create a memory leak. |
2991 | 40 |
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41 std::string |
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42 tree::str_print_code (void) |
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43 { |
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44 std::ostringstream buf; |
2991 | 45 |
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46 tree_print_code tpc (buf); |
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47 |
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48 accept (tpc); |
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49 |
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50 std::string retval = buf.str (); |
2991 | 51 |
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52 return retval; |
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53 } |
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54 |
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55 // function from libinterp/parse-tree/oct-parse.cc, not listed in oct-parse.h |
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56 octave_value_list eval_string (const std::string&, bool, int&, int); |
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57 // Is the current breakpoint condition met? |
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58 bool |
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59 tree::meets_bp_condition () const |
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60 { |
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61 bool retval; |
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62 if (bp == 0) |
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63 retval = false; |
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64 else if (bp->empty ()) // empty condition always met |
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65 retval = true; |
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66 else |
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67 { |
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68 int parse_status = 0; |
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69 |
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70 octave::unwind_protect frame; |
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71 frame.protect_var (buffer_error_messages); |
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72 frame.protect_var (Vdebug_on_error); |
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73 frame.protect_var (Vdebug_on_warning); |
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74 |
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75 buffer_error_messages++; |
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76 Vdebug_on_error = false; |
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77 Vdebug_on_warning = false; |
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78 |
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79 retval = true; // default to stopping if any error |
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80 try |
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81 { |
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82 octave_value_list val = eval_string (*bp, 1, parse_status, 1); |
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83 if (parse_status == 0) |
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84 { |
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85 if (! val(0).is_scalar_type ()) |
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86 warning ("Breakpoint condition must be a scalar, not size %s", |
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87 val(0).dims ().str ('x').c_str ()); |
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88 else |
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89 retval = val(0).bool_value (); |
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90 } |
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91 else |
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92 warning ("Error parsing breakpoint condition"); |
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93 } |
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94 catch (const octave::execution_exception& e) |
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95 { |
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96 warning ("Error evaluating breakpoint condition:\n %s", |
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97 last_error_message ().c_str ()); |
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98 } |
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99 } |
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100 return retval; |
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101 } |
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102 } |