Mercurial > octave
view libinterp/parse-tree/pt-exp.h @ 23446:cd4e1ee28716
maint: Use convention 'void * fcn ()' for functions which return pointers.
* make_int.cc, dialog.h, file-editor-interface.h, file-editor-tab.h,
file-editor.h, octave-txt-lexer.h, main-window.h, octave-dock-widget.h,
parser.h, webinfo.h, resource-manager.h, thread-manager.h, c-file-ptr-stream.h,
call-stack.h, comment-list.h, ft-text-renderer.h, gl-render.cc, input.h,
mex.cc, mexproto.h, mxarray.in.h, oct-fstrm.h, oct-iostrm.h, oct-procbuf.h,
oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h, octave-link.h,
sighandlers.cc, symtab.h, sysdep.h, utils.h, audiodevinfo.cc, ov-base-diag.h,
ov-base-int.h, ov-base-scalar.h, ov-base-sparse.h, ov-base.h, ov-bool-mat.h,
ov-bool-sparse.h, ov-bool.h, ov-builtin.h, ov-cell.h, ov-ch-mat.h, ov-class.h,
ov-classdef.h, ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h,
ov-cx-diag.h, ov-cx-mat.h, ov-cx-sparse.h, ov-fcn-handle.h, ov-fcn-inline.h,
ov-fcn.h, ov-float.h, ov-flt-complex.h, ov-flt-cx-diag.h, ov-flt-cx-mat.h,
ov-flt-re-diag.h, ov-flt-re-mat.h, ov-intx.h, ov-java.cc, ov-java.h,
ov-lazy-idx.h, ov-mex-fcn.h, ov-oncleanup.h, ov-perm.h, ov-range.h,
ov-re-diag.h, ov-re-mat.h, ov-re-sparse.h, ov-scalar.h, ov-str-mat.h,
ov-struct.h, ov-usr-fcn.h, ov.h, octave.h, bp-table.h, jit-ir.h,
jit-typeinfo.h, jit-util.h, lex.h, parse.h, pt-arg-list.h, pt-array-list.h,
pt-assign.h, pt-binop.h, pt-cell.h, pt-classdef.h, pt-cmd.h, pt-colon.h,
pt-const.h, pt-decl.h, pt-except.h, pt-exp.h, pt-fcn-handle.h, pt-funcall.h,
pt-id.h, pt-idx.h, pt-jit.h, pt-jump.h, pt-loop.h, pt-mat.h, pt-misc.h,
pt-select.h, pt-stmt.h, pt-unop.h, token.h, Array.cc, Array.h, DiagArray2.h,
Sparse.h, dim-vector.h, idx-vector.h, sparse-chol.cc, cmd-edit.cc, cmd-edit.h,
lo-array-errwarn.cc, lo-array-errwarn.h, lo-array-gripes.cc, lo-utils.h,
oct-inttypes.h, oct-locbuf.h, oct-refcount.h, oct-rl-edit.h, oct-rl-hist.h,
oct-shlib.cc, oct-shlib.h, str-vec.h, canonicalize-file-name-wrapper.h,
dirent-wrappers.h, getopt-wrapper.h, glob-wrappers.h, localcharset-wrapper.h,
set-program-name-wrapper.h, signal-wrappers.h, strdup-wrapper.h,
tmpfile-wrapper.h, unistd-wrappers.h, display-available.h:
Use convention 'void * fcn ()' for functions which return pointers.
author | Rik <rik@octave.org> |
---|---|
date | Thu, 27 Apr 2017 09:48:57 -0700 |
parents | c452180ab672 |
children | 00e518162fda |
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/* Copyright (C) 1996-2017 John W. Eaton 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 <http://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; class octave_lvalue; #include "pt.h" #include "symtab.h" namespace octave { class tree_evaluator; // A base class for expressions. class tree_expression : public tree { public: tree_expression (int l = -1, int c = -1) : tree (l, c), num_parens (0), postfix_index_type ('\0'), for_cmd_expr (false), print_flag (false) { } // No copying! tree_expression (const tree_expression&) = delete; tree_expression& operator = (const tree_expression&) = delete; virtual ~tree_expression (void) = default; virtual bool has_magic_end (void) const = 0; virtual tree_expression * dup (symbol_table::scope_id, symbol_table::context_id context) const = 0; virtual bool is_constant (void) const { return false; } virtual bool is_matrix (void) const { return false; } virtual bool is_cell (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 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 num_parens; } bool is_postfix_indexed (void) const { return (postfix_index_type != '\0'); } char postfix_index (void) const { return postfix_index_type; } // Check if the result of the expression should be printed. // Should normally be used in conjunction with // octave::tree_evaluator::statement_printing_enabled. bool print_result (void) const { return 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) { for_cmd_expr = true; } bool is_for_cmd_expr (void) const { return for_cmd_expr; } tree_expression * mark_in_parens (void) { num_parens++; return this; } tree_expression * set_postfix_index (char type) { postfix_index_type = type; return this; } tree_expression * set_print_flag (bool print) { print_flag = print; return this; } virtual void copy_base (const tree_expression& e) { num_parens = e.num_parens; postfix_index_type = e.postfix_index_type; print_flag = e.print_flag; } 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 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 postfix_index_type; // TRUE if this expression is the EXPR in for loop: // FOR i = EXPR ... END bool for_cmd_expr; // Print result of rvalue for this expression? bool print_flag; }; } #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) OCTAVE_DEPRECATED ("use 'octave::tree_expression' instead") typedef octave::tree_expression tree_expression; #endif #endif