Mercurial > octave
annotate libinterp/parse-tree/pt-funcall.cc @ 23083:e9a0469dedd9 stable
maint: strip extra trailing newlines from files.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Fri, 20 Jan 2017 12:19:08 -0500 |
| parents | 34ce5be04942 |
| children | ef4d915df748 3ac9f9ecfae5 |
| rev | line source |
|---|---|
| 15035 | 1 /* |
| 2 | |
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3 Copyright (C) 2012-2016 John W. Eaton |
| 15035 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 3 of the License, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with Octave; see the file COPYING. If not, see | |
| 19 <http://www.gnu.org/licenses/>. | |
| 20 | |
| 21 */ | |
| 22 | |
|
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23 #if defined (HAVE_CONFIG_H) |
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24 # include "config.h" |
| 15035 | 25 #endif |
| 26 | |
| 27 #include "ov-fcn.h" | |
| 28 #include "pt-funcall.h" | |
| 29 #include "pt-walk.h" | |
| 30 | |
| 31 // Function call objects. | |
| 32 | |
| 33 void | |
| 34 tree_funcall::print (std::ostream& os, bool pr_as_read_syntax, | |
| 35 bool pr_orig_text) | |
| 36 { | |
| 37 print_raw (os, pr_as_read_syntax, pr_orig_text); | |
| 38 } | |
| 39 | |
| 40 void | |
| 41 tree_funcall::print_raw (std::ostream& os, bool pr_as_read_syntax, | |
| 42 bool pr_orig_text) | |
| 43 { | |
| 44 if (pr_orig_text) | |
| 45 { | |
| 46 os << original_text (); | |
| 47 } | |
| 48 else | |
| 49 { | |
| 50 octave_function *fp = fcn.function_value (); | |
| 51 std::string nm = fp ? fp->name () : std::string ("<invalid-function>"); | |
| 52 | |
| 53 os << nm << " ("; | |
| 54 | |
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55 octave_idx_type n = args.length (); |
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56 for (octave_idx_type i = 0; i < n; i++) |
| 15035 | 57 { |
| 58 args(i).print_raw (os, pr_as_read_syntax); | |
| 59 | |
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60 if (i < n - 1) |
| 15035 | 61 os << ", "; |
| 62 } | |
| 63 | |
| 64 os << ")"; | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 tree_funcall * | |
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69 tree_funcall::dup (symbol_table::scope_id, symbol_table::context_id) const |
| 15035 | 70 { |
| 71 tree_funcall *new_fc = new tree_funcall (fcn, args, line (), column ()); | |
| 72 | |
| 73 new_fc->copy_base (*new_fc); | |
| 74 | |
| 75 return new_fc; | |
| 76 } | |
| 77 | |
| 78 void | |
| 79 tree_funcall::accept (tree_walker& tw) | |
| 80 { | |
| 81 tw.visit_funcall (*this); | |
| 82 } | |
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83 |
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84 octave_value_list |
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85 tree_funcall::rvalue (int nargout) |
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86 { |
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87 octave_value_list retval; |
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88 |
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89 retval = feval (fcn.function_value (), args, nargout); |
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90 |
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91 if (retval.length () == 1 && retval(0).is_function ()) |
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92 { |
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93 // The return object is a function. We may need to re-index it using the |
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94 // same logic as for identifier. This is primarily used for superclass |
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95 // references in classdef. |
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96 |
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97 octave_value val = retval(0); |
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98 octave_function *f = val.function_value (true); |
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99 |
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100 if (f && ! (is_postfix_indexed () |
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101 && f->is_postfix_index_handled (postfix_index ()))) |
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102 { |
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103 octave_value_list tmp_args; |
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104 |
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105 retval = val.do_multi_index_op (nargout, tmp_args); |
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106 } |
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107 } |
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108 |
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109 return retval; |
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110 } |