Mercurial > octave
view libinterp/parse-tree/pt.h @ 31221:f5755dbacd8d
maint: merge stable to default
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Wed, 31 Aug 2022 22:04:02 +0200 |
parents | 796f54d4ddbf |
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_h) #define octave_pt_h 1 #include "octave-config.h" #include <string> #include <iosfwd> class octave_function; namespace octave { class tree_evaluator; class tree_walker; // Base class for the parse tree. class tree { public: tree (int l = -1, int c = -1) : m_line_num (l), m_column_num (c), m_bp_cond (nullptr) { } // No copying! tree (const tree&) = delete; tree& operator = (const tree&) = delete; virtual ~tree (void) = default; virtual int line (void) const { return m_line_num; } virtual int column (void) const { return m_column_num; } void line (int l) { m_line_num = l; } void column (int c) { m_column_num = c; } void set_location (int l, int c) { m_line_num = l; m_column_num = c; } virtual void set_breakpoint (const std::string& condition) { if (m_bp_cond) *m_bp_cond = condition; else m_bp_cond = new std::string (condition); } virtual void delete_breakpoint (void) { if (m_bp_cond) { delete m_bp_cond; m_bp_cond = nullptr; } } bool meets_bp_condition (tree_evaluator& tw) const; bool is_breakpoint (void) const { return m_bp_cond; } bool is_active_breakpoint (tree_evaluator& tw) const { return m_bp_cond && meets_bp_condition (tw); } // breakpoint condition, or "0" (i.e., "false") if no breakpoint. // To distinguish "0" from a disabled breakpoint, test "is_breakpoint" too. const std::string bp_cond (void) const { return m_bp_cond ? *m_bp_cond : "0"; } std::string str_print_code (void); virtual void accept (tree_walker& tw) = 0; private: // The input line and column where we found the text that was // eventually converted to this tree node. int m_line_num; int m_column_num; // NULL if no breakpoint, or a breakpoint condition if there is one. std::string *m_bp_cond; }; } #endif