Mercurial > hg > octave-nkf
annotate libinterp/parse-tree/pt-funcall.cc @ 18423:9ca314e79956
Allow to call superclass constructor without arguments.
* ov-classdef.cc (octave_classdef_superclass_ref::function_value): New
method.
* pt-funcall.h (tree_funcall::rvalue): Move definition to C++.
* pt-funcall.cc (tree_funcall::rvalue): Moved from header. If the
result of the function call is a single function object, re-index the
function to yield the proper result it required (similar logic as in
pt-id.cc).
| author | Michael Goffioul <michael.goffioul@gmail.com> |
|---|---|
| date | Thu, 23 Jan 2014 21:24:43 -0500 |
| parents | c4f5c781c3ca |
| children | bae00174787c |
| rev | line source |
|---|---|
| 15035 | 1 /* |
| 2 | |
|
17746
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maint: Update copyright notices.
John W. Eaton <jwe@octave.org>
parents:
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3 Copyright (C) 2012-2013 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 | |
| 23 #ifdef HAVE_CONFIG_H | |
| 24 #include <config.h> | |
| 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 | |
| 55 octave_idx_type len = args.length (); | |
| 56 for (octave_idx_type i = 0; i < len; i++) | |
| 57 { | |
| 58 args(i).print_raw (os, pr_as_read_syntax); | |
| 59 | |
| 60 if (i < len - 1) | |
| 61 os << ", "; | |
| 62 } | |
| 63 | |
| 64 os << ")"; | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 tree_funcall * | |
| 69 tree_funcall::dup (symbol_table::scope_id, | |
| 70 symbol_table::context_id context) const | |
| 71 { | |
| 72 tree_funcall *new_fc = new tree_funcall (fcn, args, line (), column ()); | |
| 73 | |
| 74 new_fc->copy_base (*new_fc); | |
| 75 | |
| 76 return new_fc; | |
| 77 } | |
| 78 | |
| 79 void | |
| 80 tree_funcall::accept (tree_walker& tw) | |
| 81 { | |
| 82 tw.visit_funcall (*this); | |
| 83 } | |
|
18423
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Allow to call superclass constructor without arguments.
Michael Goffioul <michael.goffioul@gmail.com>
parents:
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diff
changeset
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84 |
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parents:
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85 octave_value_list |
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86 tree_funcall::rvalue (int nargout) |
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87 { |
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88 octave_value_list retval; |
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89 |
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90 retval = feval (fcn.function_value (), args, nargout); |
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91 |
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92 if (retval.length () == 1 && retval(0).is_function ()) |
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parents:
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93 { |
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94 // The return object is a function. We may need to re-index it using the |
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parents:
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95 // same logic as for identifier. This is primarily used for superclass |
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96 // references in classdef. |
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97 |
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98 octave_value val = retval(0); |
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99 octave_function *f = val.function_value (true); |
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100 |
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101 if (f && ! (is_postfix_indexed () |
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102 && f->is_postfix_index_handled (postfix_index ()))) |
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103 { |
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104 octave_value_list tmp_args; |
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105 |
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106 retval = val.do_multi_index_op (nargout, tmp_args); |
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parents:
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107 } |
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108 } |
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109 |
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110 return retval; |
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111 } |