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annotate libinterp/parse-tree/pt-exp.h @ 17822:ebb3ef964372

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maint: Use common #define syntax "octave_filename_h" in h_files. * libgui/src/dialog.h, libgui/src/find-files-dialog.h, libgui/src/find-files-model.h, libgui/src/m-editor/file-editor-tab.h, libgui/src/m-editor/octave-qscintilla.h, libgui/src/main-window.h, libgui/src/octave-dock-widget.h, libgui/src/workspace-model.h, libgui/src/workspace-view.h, libinterp/corefcn/Cell.h, libinterp/corefcn/gl-render.h, libinterp/corefcn/gl2ps-renderer.h, libinterp/corefcn/graphics.in.h, libinterp/corefcn/oct-errno.h, libinterp/corefcn/oct-fstrm.h, libinterp/corefcn/oct-handle.h, libinterp/corefcn/oct-hdf5.h, libinterp/corefcn/oct-hist.h, libinterp/corefcn/oct-iostrm.h, libinterp/corefcn/oct-lvalue.h, libinterp/corefcn/oct-prcstrm.h, libinterp/corefcn/oct-procbuf.h, libinterp/corefcn/oct-stdstrm.h, libinterp/corefcn/oct-stream.h, libinterp/corefcn/oct-strstrm.h, libinterp/corefcn/octave-link.h, libinterp/corefcn/pt-jit.h, libinterp/octave-value/ov-base-diag.h, libinterp/octave-value/ov-base-int.h, libinterp/octave-value/ov-base-mat.h, libinterp/octave-value/ov-base-scalar.h, libinterp/octave-value/ov-base-sparse.h, libinterp/octave-value/ov-base.h, libinterp/octave-value/ov-bool-mat.h, libinterp/octave-value/ov-bool-sparse.h, libinterp/octave-value/ov-bool.h, libinterp/octave-value/ov-builtin.h, libinterp/octave-value/ov-cell.h, libinterp/octave-value/ov-ch-mat.h, libinterp/octave-value/ov-class.h, libinterp/octave-value/ov-colon.h, libinterp/octave-value/ov-complex.h, libinterp/octave-value/ov-cs-list.h, libinterp/octave-value/ov-cx-diag.h, libinterp/octave-value/ov-cx-mat.h, libinterp/octave-value/ov-cx-sparse.h, libinterp/octave-value/ov-dld-fcn.h, libinterp/octave-value/ov-fcn-handle.h, libinterp/octave-value/ov-fcn-inline.h, libinterp/octave-value/ov-fcn.h, libinterp/octave-value/ov-float.h, libinterp/octave-value/ov-flt-complex.h, libinterp/octave-value/ov-flt-cx-diag.h, libinterp/octave-value/ov-flt-cx-mat.h, libinterp/octave-value/ov-flt-re-diag.h, libinterp/octave-value/ov-flt-re-mat.h, libinterp/octave-value/ov-int-traits.h, libinterp/octave-value/ov-int16.h, libinterp/octave-value/ov-int32.h, libinterp/octave-value/ov-int64.h, libinterp/octave-value/ov-int8.h, libinterp/octave-value/ov-java.h, libinterp/octave-value/ov-lazy-idx.h, libinterp/octave-value/ov-mex-fcn.h, libinterp/octave-value/ov-null-mat.h, libinterp/octave-value/ov-perm.h, libinterp/octave-value/ov-range.h, libinterp/octave-value/ov-re-diag.h, libinterp/octave-value/ov-re-mat.h, libinterp/octave-value/ov-re-sparse.h, libinterp/octave-value/ov-scalar.h, libinterp/octave-value/ov-str-mat.h, libinterp/octave-value/ov-struct.h, libinterp/octave-value/ov-typeinfo.h, libinterp/octave-value/ov-uint16.h, libinterp/octave-value/ov-uint32.h, libinterp/octave-value/ov-uint64.h, libinterp/octave-value/ov-uint8.h, libinterp/octave-value/ov-usr-fcn.h, libinterp/octave-value/ov.h, libinterp/parse-tree/pt-all.h, libinterp/parse-tree/pt-arg-list.h, libinterp/parse-tree/pt-array-list.h, libinterp/parse-tree/pt-assign.h, libinterp/parse-tree/pt-binop.h, libinterp/parse-tree/pt-bp.h, libinterp/parse-tree/pt-cbinop.h, libinterp/parse-tree/pt-cell.h, libinterp/parse-tree/pt-check.h, libinterp/parse-tree/pt-cmd.h, libinterp/parse-tree/pt-colon.h, libinterp/parse-tree/pt-const.h, libinterp/parse-tree/pt-decl.h, libinterp/parse-tree/pt-eval.h, libinterp/parse-tree/pt-except.h, libinterp/parse-tree/pt-exp.h, libinterp/parse-tree/pt-fcn-handle.h, libinterp/parse-tree/pt-id.h, libinterp/parse-tree/pt-idx.h, libinterp/parse-tree/pt-jump.h, libinterp/parse-tree/pt-loop.h, libinterp/parse-tree/pt-mat.h, libinterp/parse-tree/pt-misc.h, libinterp/parse-tree/pt-pr-code.h, libinterp/parse-tree/pt-select.h, libinterp/parse-tree/pt-stmt.h, libinterp/parse-tree/pt-unop.h, libinterp/parse-tree/pt-walk.h, libinterp/parse-tree/pt.h, liboctave/array/CColVector.h, liboctave/array/CDiagMatrix.h, liboctave/array/CMatrix.h, liboctave/array/CNDArray.h, liboctave/array/CRowVector.h, liboctave/array/boolMatrix.h, liboctave/array/chMatrix.h, liboctave/array/chNDArray.h, liboctave/array/dColVector.h, liboctave/array/dDiagMatrix.h, liboctave/array/dMatrix.h, liboctave/array/dNDArray.h, liboctave/array/dRowVector.h, liboctave/array/fCColVector.h, liboctave/array/fCDiagMatrix.h, liboctave/array/fCMatrix.h, liboctave/array/fCNDArray.h, liboctave/array/fCRowVector.h, liboctave/array/fColVector.h, liboctave/array/fDiagMatrix.h, liboctave/array/fMatrix.h, liboctave/array/fNDArray.h, liboctave/array/fRowVector.h, liboctave/cruft/misc/lo-error.h, liboctave/numeric/CmplxAEPBAL.h, liboctave/numeric/CmplxCHOL.h, liboctave/numeric/CmplxGEPBAL.h, liboctave/numeric/CmplxHESS.h, liboctave/numeric/CmplxLU.h, liboctave/numeric/CmplxQR.h, liboctave/numeric/CmplxQRP.h, liboctave/numeric/CmplxSCHUR.h, liboctave/numeric/CmplxSVD.h, liboctave/numeric/Quad.h, liboctave/numeric/SparseCmplxCHOL.h, liboctave/numeric/SparseCmplxLU.h, liboctave/numeric/SparseCmplxQR.h, liboctave/numeric/SparseQR.h, liboctave/numeric/SparsedbleCHOL.h, liboctave/numeric/SparsedbleLU.h, liboctave/numeric/bsxfun.h, liboctave/numeric/dbleAEPBAL.h, liboctave/numeric/dbleCHOL.h, liboctave/numeric/dbleGEPBAL.h, liboctave/numeric/dbleHESS.h, liboctave/numeric/dbleLU.h, liboctave/numeric/dbleQR.h, liboctave/numeric/dbleQRP.h, liboctave/numeric/dbleSCHUR.h, liboctave/numeric/dbleSVD.h, liboctave/numeric/fCmplxAEPBAL.h, liboctave/numeric/fCmplxCHOL.h, liboctave/numeric/fCmplxGEPBAL.h, liboctave/numeric/fCmplxHESS.h, liboctave/numeric/fCmplxLU.h, liboctave/numeric/fCmplxQR.h, liboctave/numeric/fCmplxQRP.h, liboctave/numeric/fCmplxSCHUR.h, liboctave/numeric/fCmplxSVD.h, liboctave/numeric/fEIG.h, liboctave/numeric/floatAEPBAL.h, liboctave/numeric/floatCHOL.h, liboctave/numeric/floatGEPBAL.h, liboctave/numeric/floatHESS.h, liboctave/numeric/floatLU.h, liboctave/numeric/floatQR.h, liboctave/numeric/floatQRP.h, liboctave/numeric/floatSCHUR.h, liboctave/numeric/floatSVD.h, liboctave/numeric/lo-mappers.h, liboctave/numeric/lo-specfun.h, liboctave/numeric/oct-convn.h, liboctave/numeric/oct-norm.h, liboctave/numeric/oct-rand.h, liboctave/operators/Sparse-diag-op-defs.h, liboctave/operators/Sparse-op-defs.h, liboctave/operators/Sparse-perm-op-defs.h, liboctave/system/lo-sysdep.h, liboctave/system/oct-env.h, liboctave/system/oct-group.h, liboctave/system/oct-openmp.h, liboctave/system/oct-passwd.h, liboctave/system/oct-syscalls.h, liboctave/system/oct-time.h, liboctave/system/oct-uname.h, liboctave/util/lo-array-gripes.h, liboctave/util/lo-cutils.h, liboctave/util/lo-ieee.h, liboctave/util/lo-macros.h, liboctave/util/lo-math.h, liboctave/util/lo-regexp.h, liboctave/util/lo-traits.h, liboctave/util/lo-utils.h, liboctave/util/oct-base64.h, liboctave/util/oct-binmap.h, liboctave/util/oct-glob.h, liboctave/util/oct-inttypes.h, liboctave/util/oct-locbuf.h, liboctave/util/oct-mem.h, liboctave/util/oct-mutex.h, liboctave/util/oct-refcount.h, liboctave/util/oct-rl-edit.h, liboctave/util/oct-rl-hist.h, liboctave/util/oct-shlib.h, liboctave/util/oct-sort.h, liboctave/util/oct-sparse.h: Use common #define syntax "octave_filename_h" in h_files.
author Rik <rik@octave.org>
date Thu, 31 Oct 2013 22:19:07 -0700
parents 175b392e91fe
children 97e49b588f5d d76f790b4eec
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1 /*
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2
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3 Copyright (C) 1996-2013 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if !defined (octave_pt_exp_h)
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24 #define octave_pt_exp_h 1
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25
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26 #include <string>
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27 #include <list>
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28
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29 class octave_value;
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30 class octave_lvalue;
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31
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32 #include "pt.h"
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33 #include "symtab.h"
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34
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35 // A base class for expressions.
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36
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37 class
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38 tree_expression : public tree
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39 {
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40 public:
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41
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42 tree_expression (int l = -1, int c = -1)
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43 : tree (l, c), num_parens (0), postfix_indexed (false),
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44 print_flag (false) { }
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45
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46 virtual ~tree_expression (void) { }
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47
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48 virtual bool has_magic_end (void) const = 0;
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49
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50 virtual tree_expression *dup (symbol_table::scope_id,
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51 symbol_table::context_id context) const = 0;
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52
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53 virtual bool is_constant (void) const { return false; }
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54
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55 virtual bool is_matrix (void) const { return false; }
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56
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57 virtual bool is_cell (void) const { return false; }
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59 virtual bool is_identifier (void) const { return false; }
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61 virtual bool is_index_expression (void) const { return false; }
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63 virtual bool is_assignment_expression (void) const { return false; }
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64
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65 virtual bool is_prefix_expression (void) const { return false; }
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66
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67 virtual bool is_unary_expression (void) const { return false; }
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68
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69 virtual bool is_binary_expression (void) const { return false; }
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71 virtual bool is_boolean_expression (void) const { return false; }
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72
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73 virtual bool is_logically_true (const char *);
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75 virtual bool lvalue_ok (void) const { return false; }
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77 virtual bool rvalue_ok (void) const { return false; }
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78
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79 virtual octave_value rvalue1 (int nargout = 1);
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80
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81 virtual octave_value_list rvalue (int nargout);
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83 virtual octave_value_list
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84 rvalue (int nargout, const std::list<octave_lvalue> *lvalue_list);
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86 virtual octave_lvalue lvalue (void);
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88 int paren_count (void) const { return num_parens; }
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90 bool is_postfix_indexed (void) const { return postfix_indexed; }
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91
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92 // Check if the result of the expression should be printed.
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93 // Should normally be used in conjunction with
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94 // tree_evaluator::statement_printing_enabled.
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95 bool print_result (void) const { return print_flag; }
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96
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97 virtual std::string oper (void) const { return "<unknown>"; }
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98
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99 virtual std::string name (void) const { return "<unknown>"; }
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100
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101 virtual std::string original_text (void) const;
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102
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103 virtual void mark_braindead_shortcircuit (const std::string&) { }
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104
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105 tree_expression *mark_in_parens (void)
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106 {
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107 num_parens++;
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108 return this;
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109 }
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110
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111 tree_expression *mark_postfix_indexed (void)
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112 {
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113 postfix_indexed = true;
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114 return this;
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115 }
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116
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117 tree_expression *set_print_flag (bool print)
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118 {
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119 print_flag = print;
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120 return this;
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121 }
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122
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123 virtual void copy_base (const tree_expression& e)
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124 {
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125 num_parens = e.num_parens;
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126 postfix_indexed = e.postfix_indexed;
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127 print_flag = e.print_flag;
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128 }
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129
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130 protected:
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131
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132 // A count of the number of times this expression appears directly
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133 // inside a set of parentheses.
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134 //
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135 // (((e1)) + e2) ==> 2 for expression e1
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136 // ==> 1 for expression ((e1)) + e2
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137 // ==> 0 for expression e2
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138 int num_parens;
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139
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140 // A flag that says whether this expression has an index associated
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141 // with it. See the code in tree_identifier::rvalue for the rationale.
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142 bool postfix_indexed;
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143
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144 // Print result of rvalue for this expression?
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145 bool print_flag;
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146
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147 private:
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148
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149 // No copying!
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150
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151 tree_expression (const tree_expression&);
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152
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153 tree_expression& operator = (const tree_expression&);
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154 };
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155
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156 #endif