Mercurial > octave
view libinterp/parse-tree/pt-unop.h @ 33309:d422992b5483
refactor position tracking in the parser
This change replaces direct source line and column tracking in the
tree_* classes with the beginning and ending positions in tokens
created by the lexer. All line and column arguments for tree_*
constructors have been removed. More tree_* classes have been
modified to store tokens that are part of the syntax but not necessary
for evaluation.
Affected files: cdef-class.cc, ov-fcn.cc, ov-fcn.h, ov-usr-fcn.cc,
ov-usr-fcn.h, bp-table.cc, oct-parse.yy, parse.h, pt-arg-list.cc,
pt-arg-list.h, pt-args-block.h, pt-array-list.h, pt-assign.cc,
pt-assign.h, pt-binop.cc, pt-binop.h, pt-cbinop.cc, pt-cbinop.h,
pt-cell.cc, pt-cell.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h,
pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc,
pt-decl.h, pt-eval.cc, pt-except.h, pt-exp.h, pt-fcn-handle.cc,
pt-fcn-handle.h, pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.h,
pt-mat.cc, pt-mat.h, pt-misc.h, pt-select.h, pt-spmd.h, pt-stmt.cc,
pt-stmt.h, pt-unop.cc, pt-unop.h, pt.cc, and pt.h.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 04 Apr 2024 00:58:56 -0400 |
parents | 2e484f9f1f18 |
children |
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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_unop_h) #define octave_pt_unop_h 1 #include "octave-config.h" #include <string> class octave_value; class octave_value_list; #include "ov.h" #include "pt-exp.h" #include "pt-walk.h" #include "token.h" OCTAVE_BEGIN_NAMESPACE(octave) class symbol_scope; // Unary expressions. class tree_unary_expression : public tree_expression { protected: tree_unary_expression (octave_value::unary_op t = octave_value::unknown_unary_op) : m_op (nullptr), m_etype (t) { } tree_unary_expression (const token& op_tok, tree_expression *e, octave_value::unary_op t = octave_value::unknown_unary_op) : m_op_tok (op_tok), m_op (e), m_etype (t) { } public: OCTAVE_DISABLE_COPY_MOVE (tree_unary_expression) ~tree_unary_expression () { delete m_op; } bool is_unary_expression () const { return true; } tree_expression * operand () { return m_op; } std::string oper () const; octave_value::unary_op op_type () const { return m_etype; } protected: // The operator token. token m_op_tok; // The operand for the expression. tree_expression *m_op; // The type of the expression. octave_value::unary_op m_etype; }; // Prefix expressions. class tree_prefix_expression : public tree_unary_expression { public: tree_prefix_expression (const token& op_tok, tree_expression *e, octave_value::unary_op t = octave_value::unknown_unary_op) : tree_unary_expression (op_tok, e, t) { } OCTAVE_DISABLE_COPY_MOVE (tree_prefix_expression) ~tree_prefix_expression () = default; filepos beg_pos () const { return m_op_tok.beg_pos (); } filepos end_pos () const { return m_op->end_pos (); } bool rvalue_ok () const { return true; } tree_expression * dup (symbol_scope& scope) const; octave_value evaluate (tree_evaluator&, int nargout = 1); octave_value_list evaluate_n (tree_evaluator& tw, int nargout = 1) { return ovl (evaluate (tw, nargout)); } void accept (tree_walker& tw) { tw.visit_prefix_expression (*this); } std::string profiler_name () const { return "prefix " + oper (); } }; // Postfix expressions. class tree_postfix_expression : public tree_unary_expression { public: tree_postfix_expression (tree_expression *e, const token& op_tok, octave_value::unary_op t = octave_value::unknown_unary_op) : tree_unary_expression (op_tok, e, t) { } OCTAVE_DISABLE_COPY_MOVE (tree_postfix_expression) ~tree_postfix_expression () = default; filepos beg_pos () const { return m_op->beg_pos (); } filepos end_pos () const { return m_op_tok.end_pos (); } bool rvalue_ok () const { return true; } tree_expression * dup (symbol_scope& scope) const; octave_value evaluate (tree_evaluator&, int nargout = 1); octave_value_list evaluate_n (tree_evaluator& tw, int nargout = 1) { return ovl (evaluate (tw, nargout)); } void accept (tree_walker& tw) { tw.visit_postfix_expression (*this); } std::string profiler_name () const { return "postfix " + oper (); } }; OCTAVE_END_NAMESPACE(octave) #endif