Mercurial > octave
view libinterp/parse-tree/pt-idx.h @ 33378:7e7d52c1e03a
don't lose comments that appear just before index expressions (bug #65579)
* pt-idx.h (tree_index_expression::leading_comments): New function.
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 12 Apr 2024 10:21:16 -0400 |
parents | d422992b5483 |
children |
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//////////////////////////////////////////////////////////////////////// // // 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_idx_h) #define octave_pt_idx_h 1 #include "octave-config.h" #include <list> class octave_map; class octave_value; class octave_value_list; #include "str-vec.h" #include "pt-exp.h" #include "pt-walk.h" OCTAVE_BEGIN_NAMESPACE(octave) class octave_lvalue; class symbol_scope; class tree_argument_list; class tree_evaluator; // Index expressions. class tree_index_expression : public tree_expression { public: tree_index_expression (tree_expression *e, const token& open_delim, tree_argument_list *lst, const token& close_delim, char t); tree_index_expression (tree_expression *e, const token& dot_tok, const token& struct_elt_tok); tree_index_expression (tree_expression *e, const token& dot_tok, const token& open_paren, tree_expression *df, const token& close_paren); OCTAVE_DISABLE_COPY_MOVE (tree_index_expression) ~tree_index_expression (); tree_index_expression * append (const token& open_delim, tree_argument_list *lst, const token& close_delim, char t = '('); tree_index_expression * append (const token& dot_tok, const token& struct_elt_tok); tree_index_expression * append (const token& dot_tok, const token& open_paren, tree_expression *df, const token& close_paren); bool is_index_expression () const { return true; } std::string name () const; comment_list leading_comments () const { return m_expr->leading_comments (); } filepos beg_pos () const { return m_expr->beg_pos (); } filepos end_pos () const; tree_expression * expression () { return m_expr; } std::list<tree_argument_list *> arg_lists () { return m_args; } std::string type_tags () { return m_type; } std::list<string_vector> arg_names () { return m_arg_nm; } std::list<tree_expression *> dyn_fields () { return m_dyn_field; } void mark_word_list_cmd () { m_word_list_cmd = true; } bool is_word_list_cmd () const { return m_word_list_cmd; } bool lvalue_ok () const { return m_expr->lvalue_ok (); } bool rvalue_ok () const { return true; } octave_lvalue lvalue (tree_evaluator& tw); tree_index_expression * dup (symbol_scope& scope) const; octave_value evaluate (tree_evaluator& tw, int nargout = 1) { octave_value_list retval = evaluate_n (tw, nargout); return retval.length () > 0 ? retval(0) : octave_value (); } octave_value_list evaluate_n (tree_evaluator& tw, int nargout = 1); void accept (tree_walker& tw) { tw.visit_index_expression (*this); } std::string get_struct_index (tree_evaluator& tw, std::list<string_vector>::const_iterator p_arg_nm, std::list<tree_expression *>::const_iterator p_dyn_field) const; private: // The LHS of this index expression. tree_expression *m_expr {nullptr}; // FIXME: maybe all the things in the list should be in a struct or // class so we can more easily ensure that they remain synchronized. // The indices (only valid if type == paren || type == brace). std::list<tree_argument_list *> m_args; // The type of this index expression. std::string m_type; // Record dot tokens for position and possible comment info. std::list<token> m_dot_tok; // The names of the arguments. Used for constant struct element // references. std::list<string_vector> m_arg_nm; // The list of dynamic field names, if any. std::list<tree_expression *> m_dyn_field; // TRUE if this expression was parsed as a word list command. bool m_word_list_cmd {false}; tree_index_expression () = default; octave_map make_arg_struct () const; }; OCTAVE_END_NAMESPACE(octave) #endif