Mercurial > octave
view libinterp/parse-tree/pt-exp.h @ 31237:e3016248ca5d
uifigure.m: Call set () only if varargin is not empty (bug #63088)
* uifigure.m: Call set () only if varargin is not empty.
author | John Donoghue <john.donoghue@ieee.org> |
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date | Wed, 21 Sep 2022 09:55:32 -0400 |
parents | 97504d2edcc7 |
children | 7781b1e77406 |
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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_exp_h) #define octave_pt_exp_h 1 #include "octave-config.h" #include <string> #include <list> class octave_value; #include "pt.h" #include "pt-eval.h" namespace octave { class symbol_scope; class octave_lvalue; // A base class for expressions. class tree_expression : public tree { public: tree_expression (int l = -1, int c = -1) : tree (l, c), m_num_parens (0), m_postfix_index_type ('\0'), m_for_cmd_expr (false), m_print_flag (false) { } // No copying! tree_expression (const tree_expression&) = delete; tree_expression& operator = (const tree_expression&) = delete; virtual ~tree_expression (void) = default; virtual tree_expression * dup (symbol_scope& scope) const = 0; virtual bool is_constant (void) const { return false; } virtual bool is_matrix (void) const { return false; } virtual bool iscell (void) const { return false; } virtual bool is_identifier (void) const { return false; } virtual bool is_index_expression (void) const { return false; } virtual bool is_assignment_expression (void) const { return false; } virtual bool is_prefix_expression (void) const { return false; } virtual bool is_unary_expression (void) const { return false; } virtual bool is_binary_expression (void) const { return false; } virtual bool is_boolean_expression (void) const { return false; } virtual bool is_colon_expression (void) const { return false; } virtual bool lvalue_ok (void) const { return false; } virtual bool rvalue_ok (void) const { return false; } virtual octave_lvalue lvalue (tree_evaluator&); int paren_count (void) const { return m_num_parens; } bool is_postfix_indexed (void) const { return (m_postfix_index_type != '\0'); } char postfix_index (void) const { return m_postfix_index_type; } // Check if the result of the expression should be printed. // Should normally be used in conjunction with // tree_evaluator::statement_printing_enabled. bool print_result (void) const { return m_print_flag; } virtual std::string oper (void) const { return "<unknown>"; } virtual std::string name (void) const { return "<unknown>"; } virtual std::string original_text (void) const; virtual void mark_braindead_shortcircuit (void) { } void mark_as_for_cmd_expr (void) { m_for_cmd_expr = true; } bool is_for_cmd_expr (void) const { return m_for_cmd_expr; } tree_expression * mark_in_parens (void) { m_num_parens++; return this; } tree_expression * set_postfix_index (char type) { m_postfix_index_type = type; return this; } tree_expression * set_print_flag (bool print) { m_print_flag = print; return this; } virtual void copy_base (const tree_expression& e) { m_num_parens = e.m_num_parens; m_postfix_index_type = e.m_postfix_index_type; m_print_flag = e.m_print_flag; } virtual octave_value evaluate (tree_evaluator& tw, int nargout = 1) = 0; virtual octave_value_list evaluate_n (tree_evaluator& tw, int nargout = 1) = 0; protected: // A count of the number of times this expression appears directly // inside a set of parentheses. // // (((e1)) + e2) ==> 2 for expression e1 // ==> 1 for expression ((e1)) + e2 // ==> 0 for expression e2 int m_num_parens; // The first index type associated with this expression. This field // is 0 (character '\0') if the expression has no associated index. // See the code in tree_identifier::rvalue for the rationale. char m_postfix_index_type; // TRUE if this expression is the EXPR in for loop: // FOR i = EXPR ... END bool m_for_cmd_expr; // Print result of rvalue for this expression? bool m_print_flag; }; } #endif