Mercurial > octave
view libinterp/parse-tree/pt-select.h @ 33584:3fe954c2fd25 default tip @
maint: merge stable to default
author | Rik <rik@octave.org> |
---|---|
date | Mon, 13 May 2024 11:41:11 -0700 |
parents | d422992b5483 |
children |
line wrap: on
line source
//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1996-2024 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_select_h) #define octave_pt_select_h 1 #include "octave-config.h" #include <list> #include "comment-list.h" #include "pt-cmd.h" #include "pt-stmt.h" #include "pt-walk.h" #include "token.h" OCTAVE_BEGIN_NAMESPACE(octave) class comment_list; class tree_expression; class tree_statement_list; // If. class tree_if_clause : public tree { public: tree_if_clause (const token& tok, tree_expression *e, tree_statement_list *sl) : m_tok (tok), m_expr (e), m_list (sl) { } OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (tree_if_clause) ~tree_if_clause (); token if_token () const { return m_tok; } bool is_else_clause () { return ! m_expr; } filepos beg_pos () const { return m_tok.beg_pos (); } filepos end_pos () const { return m_list->end_pos (); } tree_expression * condition () { return m_expr; } tree_statement_list * commands () { return m_list; } comment_list leading_comments () const { return m_tok.leading_comments (); } void accept (tree_walker& tw) { tw.visit_if_clause (*this); } private: token m_tok; // The condition to test. tree_expression *m_expr = nullptr; // The list of statements to evaluate if expr is true. tree_statement_list *m_list; }; class tree_if_command_list : public std::list<tree_if_clause *> { public: tree_if_command_list () { } tree_if_command_list (tree_if_clause *t) { push_back (t); } OCTAVE_DISABLE_COPY_MOVE (tree_if_command_list) ~tree_if_command_list () { while (! empty ()) { auto p = begin (); delete *p; erase (p); } } filepos beg_pos () const { if (empty ()) return filepos (); tree_if_clause *elt = front (); return elt->beg_pos (); } filepos end_pos () const { if (empty ()) return filepos (); tree_if_clause *elt = back (); return elt->end_pos (); } token if_token () const { if (! empty ()) { tree_if_clause *p = front (); return p->if_token (); } return token (); } void accept (tree_walker& tw) { tw.visit_if_command_list (*this); } }; class tree_if_command : public tree_command { public: tree_if_command (const token& if_tok, const token& end_tok) : m_if_tok (if_tok), m_end_tok (end_tok) { } tree_if_command (const token& if_tok, tree_if_command_list *lst, const token& end_tok) : m_if_tok (if_tok), m_list (lst), m_end_tok (end_tok) { } OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (tree_if_command) ~tree_if_command (); filepos beg_pos () const { return m_if_tok.beg_pos (); } filepos end_pos () const { return m_end_tok.end_pos (); } tree_if_command_list * cmd_list () { return m_list; } comment_list leading_comments () const { return m_if_tok.leading_comments (); } void accept (tree_walker& tw) { tw.visit_if_command (*this); } private: token m_if_tok; // List of if commands (if, elseif, elseif, ... else, endif) tree_if_command_list *m_list = nullptr; token m_end_tok; }; // Switch. class tree_switch_case : public tree { public: tree_switch_case (const token& tok, tree_statement_list *sl) : m_tok (tok), m_list (sl) { } tree_switch_case (const token& tok, tree_expression *e, tree_statement_list *sl) : m_tok (tok), m_label (e), m_list (sl) { } OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (tree_switch_case) ~tree_switch_case (); bool is_default_case () { return ! m_label; } filepos beg_pos () const { return m_tok.beg_pos (); } filepos end_pos () const { return m_list->end_pos (); } tree_expression * case_label () { return m_label; } tree_statement_list * commands () { return m_list; } comment_list leading_comments () const { return m_tok.leading_comments (); } void accept (tree_walker& tw) { tw.visit_switch_case (*this); } private: token m_tok; // The case label. tree_expression *m_label = nullptr; // The list of statements to evaluate if the label matches. tree_statement_list *m_list; }; class tree_switch_case_list : public std::list<tree_switch_case *> { public: tree_switch_case_list () { } tree_switch_case_list (tree_switch_case *t) { push_back (t); } OCTAVE_DISABLE_COPY_MOVE (tree_switch_case_list) ~tree_switch_case_list () { while (! empty ()) { auto p = begin (); delete *p; erase (p); } } filepos beg_pos () const { if (empty ()) return filepos (); tree_switch_case *elt = front (); return elt->beg_pos (); } filepos end_pos () const { if (empty ()) return filepos (); tree_switch_case *elt = back (); return elt->end_pos (); } void accept (tree_walker& tw) { tw.visit_switch_case_list (*this); } }; class tree_switch_command : public tree_command { public: tree_switch_command (const token& switch_tok, tree_expression *e, tree_switch_case_list *lst, const token& end_tok) : m_switch_tok (switch_tok), m_expr (e), m_list (lst), m_end_tok (end_tok) { } OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (tree_switch_command) ~tree_switch_command (); filepos beg_pos () const { return m_switch_tok.beg_pos (); } filepos end_pos () const { return m_end_tok.end_pos (); } tree_expression * switch_value () { return m_expr; } tree_switch_case_list * case_list () { return m_list; } comment_list leading_comments () const { return m_switch_tok.leading_comments (); } void accept (tree_walker& tw) { tw.visit_switch_command (*this); } private: token m_switch_tok; // Value on which to switch. tree_expression *m_expr; // List of cases (case 1, case 2, ..., default) tree_switch_case_list *m_list; token m_end_tok; }; OCTAVE_END_NAMESPACE(octave) #endif