Mercurial > octave
view libinterp/parse-tree/pt-decl.h @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | 0a5b15007766 |
children | e88a07dec498 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1996-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if ! defined (octave_pt_decl_h) #define octave_pt_decl_h 1 #include "octave-config.h" #include <list> #include <string> #include "base-list.h" #include "oct-lvalue.h" #include "pt-cmd.h" #include "pt-id.h" #include "pt-walk.h" namespace octave { class symbol_scope; class tree_evaluator; class tree_expression; class tree_identifier; // List of expressions that make up a declaration statement. class tree_decl_elt { public: enum decl_type { unknown, global, persistent }; tree_decl_elt (tree_identifier *i, tree_expression *e = nullptr); // No copying! tree_decl_elt (const tree_decl_elt&) = delete; tree_decl_elt& operator = (const tree_decl_elt&) = delete; ~tree_decl_elt (void); void mark_as_formal_parameter (void) { m_id->mark_as_formal_parameter (); } bool lvalue_ok (void) { return m_id->lvalue_ok (); } octave_lvalue lvalue (tree_evaluator& tw) { return m_id->lvalue (tw); } void mark_global (void) { type = global; } bool is_global (void) const { return type == global; } void mark_persistent (void) { type = persistent; } bool is_persistent (void) const { return type == persistent; } tree_identifier * ident (void) { return m_id; } std::string name (void) const { return m_id->name (); } tree_expression * expression (void) { return m_expr; } tree_decl_elt * dup (symbol_scope& scope) const; void accept (tree_walker& tw) { tw.visit_decl_elt (*this); } private: decl_type type; // An identifier to tag with the declared property. tree_identifier *m_id; // An initializer expression (may be zero); tree_expression *m_expr; }; class tree_decl_init_list : public base_list<tree_decl_elt *> { public: tree_decl_init_list (void) { } tree_decl_init_list (tree_decl_elt *t) { append (t); } // No copying! tree_decl_init_list (const tree_decl_init_list&) = delete; tree_decl_init_list& operator = (const tree_decl_init_list&) = delete; ~tree_decl_init_list (void) { while (! empty ()) { auto p = begin (); delete *p; erase (p); } } void mark_global (void) { for (tree_decl_elt *elt : *this) elt->mark_global (); } void mark_persistent (void) { for (tree_decl_elt *elt : *this) elt->mark_persistent (); } std::list<std::string> variable_names (void) const { std::list<std::string> retval; for (const tree_decl_elt *elt : *this) { std::string nm = elt->name (); if (! nm.empty ()) retval.push_back (nm); } return retval; } void accept (tree_walker& tw) { tw.visit_decl_init_list (*this); } }; // Base class for declaration commands -- global, static, etc. class tree_decl_command : public tree_command { public: tree_decl_command (const std::string& n, int l = -1, int c = -1) : tree_command (l, c), m_cmd_name (n), m_init_list (nullptr) { } tree_decl_command (const std::string& n, tree_decl_init_list *t, int l = -1, int c = -1); // No copying! tree_decl_command (const tree_decl_command&) = delete; tree_decl_command& operator = (const tree_decl_command&) = delete; ~tree_decl_command (void); void mark_global (void) { if (m_init_list) m_init_list->mark_global (); } void mark_persistent (void) { if (m_init_list) m_init_list->mark_persistent (); } tree_decl_init_list * initializer_list (void) { return m_init_list; } std::string name (void) const { return m_cmd_name; } void accept (tree_walker& tw) { tw.visit_decl_command (*this); } private: // The name of this command -- global, static, etc. std::string m_cmd_name; // The list of variables or initializers in this declaration command. tree_decl_init_list *m_init_list; }; } #endif