Mercurial > octave
annotate libinterp/parse-tree/pt-colon.cc @ 23602:214cb58ccc1c
use pointer to scope instead of scope id
Eliminate symbol table scope ID and the global list of all scopes
indexed by numeric ID. Function scope data is now only accessible
from the function itself, or by asking a scope for its parent scope
(if it exists).
The top-level and global scopes are now regular data members of the
symbol table class instead of being static.
Symbol table scopes are now created in the lexer when parsing a
function begins and stored in the function object when finishing the
construction of function object. If an error occurs while parsing a
function, the list of any pending scopes is deleted.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 14 Jun 2017 11:53:34 -0400 |
parents | 21baad6b35c4 |
children | bbcc1e08aaed |
rev | line source |
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2980 | 1 /* |
2 | |
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3 Copyright (C) 1996-2017 John W. Eaton |
2980 | 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. |
2980 | 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. |
2980 | 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/>. | |
2980 | 20 |
21 */ | |
22 | |
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23 #if defined (HAVE_CONFIG_H) |
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24 # include "config.h" |
2980 | 25 #endif |
26 | |
27 #include "error.h" | |
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28 #include "ovl.h" |
2980 | 29 #include "pager.h" |
30 #include "ov.h" | |
3770 | 31 #include "pt-bp.h" |
2980 | 32 #include "pt-colon.h" |
33 #include "pt-walk.h" | |
34 | |
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35 namespace octave |
2980 | 36 { |
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37 // Colon expressions. |
2980 | 38 |
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39 tree_colon_expression * |
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40 tree_colon_expression::append (tree_expression *t) |
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41 { |
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42 tree_colon_expression *retval = nullptr; |
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43 |
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44 if (! op_base) |
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45 error ("invalid colon expression"); |
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46 |
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47 if (op_limit) |
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48 { |
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49 if (op_increment) |
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50 error ("invalid colon expression"); |
2980 | 51 |
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52 // Stupid syntax: |
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53 // |
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54 // base : limit |
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55 // base : increment : limit |
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56 |
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57 op_increment = op_limit; |
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58 op_limit = t; |
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59 } |
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60 else |
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61 op_limit = t; |
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62 |
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63 retval = this; |
2980 | 64 |
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65 return retval; |
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66 } |
2980 | 67 |
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68 void |
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69 tree_colon_expression::eval_error (const std::string& s) const |
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70 { |
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71 error ("%s", s.c_str ()); |
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72 } |
2980 | 73 |
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74 int |
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75 tree_colon_expression::line (void) const |
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76 { |
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77 return (op_base ? op_base->line () |
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78 : (op_increment ? op_increment->line () |
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79 : (op_limit ? op_limit->line () |
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80 : -1))); |
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81 } |
5066 | 82 |
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83 int |
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84 tree_colon_expression::column (void) const |
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85 { |
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86 return (op_base ? op_base->column () |
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87 : (op_increment ? op_increment->column () |
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88 : (op_limit ? op_limit->column () |
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89 : -1))); |
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90 } |
5066 | 91 |
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92 tree_expression * |
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93 tree_colon_expression::dup (symbol_table::scope& scope) const |
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94 { |
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95 tree_colon_expression *new_ce = new |
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96 tree_colon_expression (op_base ? op_base->dup (scope) : 0, |
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97 op_limit ? op_limit->dup (scope) : 0, |
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98 op_increment ? op_increment->dup (scope) : 0, |
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99 line (), column ()); |
5861 | 100 |
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101 new_ce->copy_base (*new_ce); |
5861 | 102 |
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103 return new_ce; |
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104 } |
2980 | 105 } |