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annotate libinterp/parse-tree/parse.h @ 20060:a59c5a16c9ab

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Rename db_next_breakpoint_quiet to internal function. * debug.cc (Fdb_next_breakpoint_quiet): Rename function to use internal prefix and suffix "__". * main-window.cc: Rename instances to __db_next_breakpoint_quiet__.
author Rik <rik@octave.org>
date Tue, 24 Feb 2015 21:06:54 -0800
parents 4197fc428c7d
children
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1 /*
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2
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3 Copyright (C) 1993-2015 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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21 */
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22
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23 #if !defined (octave_parse_h)
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24 #define octave_parse_h 1
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25
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26 #include <cstdio>
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27
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28 #include <string>
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29
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30 #include <stack>
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31 #include <vector>
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32 #include <map>
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33
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34 #include "lex.h"
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35 #include "symtab.h"
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36 #include "token.h"
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37
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38 class octave_comment_list;
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39 class octave_function;
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40 class octave_user_function;
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41 class tree;
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42 class tree_anon_fcn_handle;
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43 class tree_argument_list;
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44 class tree_array_list;
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45 class tree_cell;
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46 class tree_classdef;
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47 class tree_classdef_attribute_list;
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48 class tree_classdef_body;
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49 class tree_classdef_enum_block;
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50 class tree_classdef_enum_list;
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51 class tree_classdef_events_block;
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52 class tree_classdef_events_list;
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53 class tree_classdef_methods_block;
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54 class tree_classdef_methods_list;
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55 class tree_classdef_properties_block;
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56 class tree_classdef_property_list;
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57 class tree_classdef_superclass_list;
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58 class tree_colon_expression;
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59 class tree_command;
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60 class tree_constant;
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61 class tree_decl_command;
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62 class tree_decl_init_list;
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63 class tree_expression;
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64 class tree_fcn_handle;
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65 class tree_funcall;
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66 class tree_function_def;
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67 class tree_identifier;
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68 class tree_if_clause;
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69 class tree_if_command;
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70 class tree_if_command_list;
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71 class tree_index_expression;
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72 class tree_matrix;
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73 class tree_matrix;
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74 class tree_parameter_list;
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75 class tree_statement;
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76 class tree_statement_list;
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77 class tree_statement_listtree_statement;
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78 class tree_switch_case;
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79 class tree_switch_case_list;
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80 class tree_switch_command;
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81
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82 #include "oct-obj.h"
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83
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84 // Nonzero means print parser debugging info (-d).
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85 extern int octave_debug;
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86
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87 // TRUE means we printed messages about reading startup files.
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88 extern bool reading_startup_message_printed;
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89
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90 extern OCTINTERP_API std::string
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91 get_help_from_file (const std::string& nm, bool& symbol_found,
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92 std::string& file);
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93
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94 extern OCTINTERP_API std::string
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95 get_help_from_file (const std::string& nm, bool& symbol_found);
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96
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97 extern OCTINTERP_API std::string lookup_autoload (const std::string& nm);
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98
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99 extern OCTINTERP_API string_vector autoloaded_functions (void);
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100
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101 extern OCTINTERP_API string_vector
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102 reverse_lookup_autoload (const std::string& nm);
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103
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104 extern OCTINTERP_API octave_function *
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105 load_fcn_from_file (const std::string& file_name,
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106 const std::string& dir_name = std::string (),
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107 const std::string& dispatch_type = std::string (),
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108 const std::string& package_name = std::string (),
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109 const std::string& fcn_name = std::string (),
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110 bool autoload = false);
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111
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112 extern OCTINTERP_API void
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113 source_file (const std::string& file_name,
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114 const std::string& context = std::string (),
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115 bool verbose = false, bool require_file = true,
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116 const std::string& warn_for = std::string ());
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117
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118 extern OCTINTERP_API octave_value_list
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119 feval (const std::string& name,
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120 const octave_value_list& args = octave_value_list (),
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121 int nargout = 0);
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122
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123 extern OCTINTERP_API octave_value_list
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124 feval (octave_function *fcn,
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125 const octave_value_list& args = octave_value_list (),
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126 int nargout = 0);
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127
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128 extern OCTINTERP_API octave_value_list
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129 feval (const octave_value_list& args, int nargout = 0);
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130
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131 extern OCTINTERP_API octave_value_list
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132 eval_string (const std::string&, bool silent, int& parse_status, int hargout);
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133
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134 extern OCTINTERP_API octave_value
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135 eval_string (const std::string&, bool silent, int& parse_status);
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136
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137 extern OCTINTERP_API void cleanup_statement_list (tree_statement_list **lst);
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138
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139 // Global access to currently active lexer.
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140 // FIXME: to be removed after more parser+lexer refactoring.
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141 extern octave_base_lexer *LEXER;
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142
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143 class
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144 octave_base_parser
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145 {
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146 public:
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147
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148 octave_base_parser (octave_base_lexer& lxr)
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149 : endfunction_found (false),
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150 autoloading (false), fcn_file_from_relative_lookup (false),
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151 parsing_subfunctions (false), max_fcn_depth (0),
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152 curr_fcn_depth (0), primary_fcn_scope (-1),
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153 curr_class_name (), curr_package_name (), function_scopes (),
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154 primary_fcn_ptr (0), subfunction_names (), classdef_object (0),
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155 stmt_list (0), lexer (lxr)
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156 { }
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157
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158 ~octave_base_parser (void);
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159
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160 void reset (void);
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161
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162 // Error mesages for mismatched end tokens.
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163 void end_error (const char *type, token::end_tok_type ettype, int l, int c);
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164
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165 // Check to see that end tokens are properly matched.
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166 bool end_token_ok (token *tok, token::end_tok_type expected);
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167
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168 // Maybe print a warning if an assignment expression is used as the
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169 // test in a logical expression.
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170 void maybe_warn_assign_as_truth_value (tree_expression *expr);
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171
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172 // Maybe print a warning about switch labels that aren't constants.
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173 void maybe_warn_variable_switch_label (tree_expression *expr);
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174
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175 // Finish building a range.
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176 tree_expression *finish_colon_expression (tree_colon_expression *e);
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177
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178 // Build a constant.
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179 tree_constant *make_constant (int op, token *tok_val);
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180
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181 // Build a function handle.
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182 tree_fcn_handle *make_fcn_handle (token *tok_val);
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183
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184 // Build an anonymous function handle.
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185 tree_anon_fcn_handle *
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186 make_anon_fcn_handle (tree_parameter_list *param_list, tree_statement *stmt);
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187
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188 // Build a binary expression.
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189 tree_expression *
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190 make_binary_op (int op, tree_expression *op1, token *tok_val,
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191 tree_expression *op2);
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192
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193 // Build a boolean expression.
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194 tree_expression *
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195 make_boolean_op (int op, tree_expression *op1, token *tok_val,
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196 tree_expression *op2);
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197
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198 // Build a prefix expression.
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199 tree_expression *
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200 make_prefix_op (int op, tree_expression *op1, token *tok_val);
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201
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202 // Build a postfix expression.
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203 tree_expression *
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204 make_postfix_op (int op, tree_expression *op1, token *tok_val);
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205
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206 // Build an unwind-protect command.
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207 tree_command *
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208 make_unwind_command (token *unwind_tok, tree_statement_list *body,
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209 tree_statement_list *cleanup, token *end_tok,
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210 octave_comment_list *lc, octave_comment_list *mc);
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211
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212 // Build a try-catch command.
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213 tree_command *
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214 make_try_command (token *try_tok, tree_statement_list *body,
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215 char catch_sep, tree_statement_list *cleanup,
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216 token *end_tok, octave_comment_list *lc,
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217 octave_comment_list *mc);
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218
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219 // Build a while command.
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220 tree_command *
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221 make_while_command (token *while_tok, tree_expression *expr,
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222 tree_statement_list *body, token *end_tok,
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223 octave_comment_list *lc);
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224
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225 // Build a do-until command.
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226 tree_command *
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227 make_do_until_command (token *until_tok, tree_statement_list *body,
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228 tree_expression *expr, octave_comment_list *lc);
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229
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230 // Build a for command.
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231 tree_command *
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232 make_for_command (int tok_id, token *for_tok, tree_argument_list *lhs,
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233 tree_expression *expr, tree_expression *maxproc,
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234 tree_statement_list *body, token *end_tok,
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235 octave_comment_list *lc);
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236
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237 // Build a break command.
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238 tree_command *make_break_command (token *break_tok);
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239
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240 // Build a continue command.
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241 tree_command *make_continue_command (token *continue_tok);
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242
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243 // Build a return command.
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244 tree_command *make_return_command (token *return_tok);
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245
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246 // Start an if command.
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247 tree_if_command_list *
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diff changeset
248 start_if_command (tree_expression *expr, tree_statement_list *list);
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249
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250 // Finish an if command.
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251 tree_if_command *
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252 finish_if_command (token *if_tok, tree_if_command_list *list,
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253 token *end_tok, octave_comment_list *lc);
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254
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255 // Build an elseif clause.
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256 tree_if_clause *
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diff changeset
257 make_elseif_clause (token *elseif_tok, tree_expression *expr,
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258 tree_statement_list *list, octave_comment_list *lc);
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259
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260 // Finish a switch command.
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261 tree_switch_command *
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262 finish_switch_command (token *switch_tok, tree_expression *expr,
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diff changeset
263 tree_switch_case_list *list, token *end_tok,
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diff changeset
264 octave_comment_list *lc);
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265
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266 // Build a switch case.
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267 tree_switch_case *
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268 make_switch_case (token *case_tok, tree_expression *expr,
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269 tree_statement_list *list, octave_comment_list *lc);
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270
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271 // Build an assignment to a variable.
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272 tree_expression *
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273 make_assign_op (int op, tree_argument_list *lhs, token *eq_tok,
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274 tree_expression *rhs);
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275
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276 // Define a script.
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277 void make_script (tree_statement_list *cmds, tree_statement *end_script);
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278
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279 // Begin defining a function.
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280 octave_user_function *
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281 start_function (tree_parameter_list *param_list, tree_statement_list *body,
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282 tree_statement *end_function);
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283
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284 // Create a no-op statement for end_function.
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285 tree_statement *make_end (const std::string& type, bool eof, int l, int c);
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286
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287 // Do most of the work for defining a function.
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288 octave_user_function *
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289 frob_function (const std::string& fname, octave_user_function *fcn);
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290
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291 // Finish defining a function.
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292 tree_function_def *
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293 finish_function (tree_parameter_list *ret_list,
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294 octave_user_function *fcn, octave_comment_list *lc,
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295 int l, int c);
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296
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297 // Reset state after parsing function.
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298 void
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299 recover_from_parsing_function (void);
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300
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301 tree_funcall *
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302 make_superclass_ref (const std::string& method_nm,
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303 const std::string& class_nm);
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304
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305 tree_funcall *
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306 make_meta_class_query (const std::string& class_nm);
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307
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308 tree_classdef *
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309 make_classdef (token *tok_val, tree_classdef_attribute_list *a,
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310 tree_identifier *id, tree_classdef_superclass_list *sc,
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311 tree_classdef_body *body, token *end_tok,
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312 octave_comment_list *lc);
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313
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314 tree_classdef_properties_block *
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315 make_classdef_properties_block (token *tok_val,
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316 tree_classdef_attribute_list *a,
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317 tree_classdef_property_list *plist,
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318 token *end_tok, octave_comment_list *lc);
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319
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320 tree_classdef_methods_block *
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321 make_classdef_methods_block (token *tok_val,
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322 tree_classdef_attribute_list *a,
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323 tree_classdef_methods_list *mlist,
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324 token *end_tok, octave_comment_list *lc);
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325
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326 tree_classdef_events_block *
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327 make_classdef_events_block (token *tok_val,
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328 tree_classdef_attribute_list *a,
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329 tree_classdef_events_list *elist,
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330 token *end_tok, octave_comment_list *lc);
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331
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332 tree_classdef_enum_block *
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333 make_classdef_enum_block (token *tok_val,
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334 tree_classdef_attribute_list *a,
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335 tree_classdef_enum_list *elist,
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336 token *end_tok, octave_comment_list *lc);
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337
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338 octave_user_function *
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339 start_classdef_external_method (tree_identifier *id,
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340 tree_parameter_list *pl);
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341
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342 tree_function_def *
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343 finish_classdef_external_method (octave_user_function *fcn,
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344 tree_parameter_list *ret_list,
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345 octave_comment_list *cl);
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346
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347 // Make an index expression.
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348 tree_index_expression *
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349 make_index_expression (tree_expression *expr,
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350 tree_argument_list *args, char type);
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351
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352 // Make an indirect reference expression.
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353 tree_index_expression *
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354 make_indirect_ref (tree_expression *expr, const std::string&);
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355
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356 // Make an indirect reference expression with dynamic field name.
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357 tree_index_expression *
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358 make_indirect_ref (tree_expression *expr, tree_expression *field);
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359
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360 // Make a declaration command.
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361 tree_decl_command *
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362 make_decl_command (int tok, token *tok_val, tree_decl_init_list *lst);
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363
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364 // Validate matrix or cell
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365 bool validate_array_list (tree_expression *e);
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366
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367 // Validate matrix object used in "[lhs] = ..." assignments.
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368 tree_argument_list *validate_matrix_for_assignment (tree_expression *e);
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369
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370 // Finish building an array_list (common action for finish_matrix
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371 // and finish_cell).
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372 tree_expression *finish_array_list (tree_array_list *a);
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373
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374 // Finish building a matrix list.
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375 tree_expression *finish_matrix (tree_matrix *m);
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376
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377 // Finish building a cell list.
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378 tree_expression *finish_cell (tree_cell *c);
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379
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380 // Maybe print a warning. Duh.
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381 void maybe_warn_missing_semi (tree_statement_list *);
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382
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383 // Set the print flag for a statement based on the separator type.
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384 tree_statement_list *
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385 set_stmt_print_flag (tree_statement_list *, char, bool);
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386
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387 // Finish building a statement.
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388 template <class T>
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389 tree_statement *make_statement (T *arg);
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390
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391 // Create a statement list.
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392 tree_statement_list *make_statement_list (tree_statement *stmt);
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393
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394 // Append a statement to an existing statement list.
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395 tree_statement_list *
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396 append_statement_list (tree_statement_list *list, char sep,
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397 tree_statement *stmt, bool warn_missing_semi);
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398
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399 // Generic error messages.
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400 void bison_error (const char *s);
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401
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402 // Have we found an explicit end to a function?
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403 bool endfunction_found;
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diff changeset
404
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405 // TRUE means we are in the process of autoloading a function.
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diff changeset
406 bool autoloading;
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407
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408 // TRUE means the current function file was found in a relative path
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409 // element.
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410 bool fcn_file_from_relative_lookup;
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411
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diff changeset
412 // FALSE if we are still at the primary function. Subfunctions can
a57c2c8c8163 move some variables into the octave_parser class
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parents: 16149
diff changeset
413 // only be declared inside function files.
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diff changeset
414 bool parsing_subfunctions;
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diff changeset
415
a57c2c8c8163 move some variables into the octave_parser class
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diff changeset
416 // Maximum function depth detected. Used to determine whether
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diff changeset
417 // we have nested functions or just implicitly ended subfunctions.
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diff changeset
418 int max_fcn_depth;
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diff changeset
419
a57c2c8c8163 move some variables into the octave_parser class
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parents: 16149
diff changeset
420 // = 0 currently outside any function.
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diff changeset
421 // = 1 inside the primary function or a subfunction.
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diff changeset
422 // > 1 means we are looking at a function definition that seems to be
a57c2c8c8163 move some variables into the octave_parser class
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parents: 16149
diff changeset
423 // inside a function. Note that the function still might not be a
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diff changeset
424 // nested function.
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diff changeset
425 int curr_fcn_depth;
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diff changeset
426
a57c2c8c8163 move some variables into the octave_parser class
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parents: 16149
diff changeset
427 // Scope where we install all subfunctions and nested functions. Only
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diff changeset
428 // used while reading function files.
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diff changeset
429 symbol_table::scope_id primary_fcn_scope;
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diff changeset
430
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diff changeset
431 // Name of the current class when we are parsing class methods or
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432 // constructors.
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433 std::string curr_class_name;
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diff changeset
434
16676
7368654f302f Initial support for (classdef) packages.
Michael Goffioul <michael.goffioul@gmail.com>
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diff changeset
435 // Name of the current package when we are parsing an element contained
7368654f302f Initial support for (classdef) packages.
Michael Goffioul <michael.goffioul@gmail.com>
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diff changeset
436 // in a package directory (+-directory).
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Michael Goffioul <michael.goffioul@gmail.com>
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diff changeset
437 std::string curr_package_name;
7368654f302f Initial support for (classdef) packages.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16644
diff changeset
438
16153
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diff changeset
439 // A stack holding the nested function scopes being parsed.
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diff changeset
440 // We don't use std::stack, because we want the clear method. Also, we
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diff changeset
441 // must access one from the top
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diff changeset
442 std::vector<symbol_table::scope_id> function_scopes;
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443
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diff changeset
444 // Pointer to the primary user function or user script function.
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diff changeset
445 octave_function *primary_fcn_ptr;
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diff changeset
446
16627
de91b1621260 adjust location of eof marker for files with subfunctions but no explicit end statements
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diff changeset
447 // List of subfunction names, initially in the order they are
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448 // installed in the symbol table, then ordered as they appear in the
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diff changeset
449 // file. Eventually stashed in the primary function object.
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diff changeset
450 std::list<std::string> subfunction_names;
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parents: 16335
diff changeset
451
16155
0259254a3ccc maint: periodic merge of default to classdef
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diff changeset
452 // Pointer to the classdef object we just parsed, if any.
0259254a3ccc maint: periodic merge of default to classdef
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diff changeset
453 tree_classdef *classdef_object;
16211
3449bf257514 maint: fix botched merge of default to classdef
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parents: 16205
diff changeset
454
16177
a7669b4d27f6 eliminate global global_command variable
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diff changeset
455 // Result of parsing input.
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diff changeset
456 tree_statement_list *stmt_list;
a7669b4d27f6 eliminate global global_command variable
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diff changeset
457
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
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458 // State of the lexer.
16293
57e87ddfee14 create base class for lexer
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459 octave_base_lexer& lexer;
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
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diff changeset
460
16287
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461 private:
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462
04a7953496a7 create base class for parser; use reference for curr_lexer
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diff changeset
463 // No copying!
04a7953496a7 create base class for parser; use reference for curr_lexer
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464
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diff changeset
465 octave_base_parser (const octave_base_parser&);
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466
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467 octave_base_parser& operator = (const octave_base_parser&);
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468 };
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diff changeset
469
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470 class
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471 octave_parser : public octave_base_parser
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472 {
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473 public:
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474
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475 octave_parser (void)
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476 : octave_base_parser (*(new octave_lexer ()))
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diff changeset
477 { }
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diff changeset
478
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diff changeset
479 octave_parser (FILE *file)
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diff changeset
480 : octave_base_parser (*(new octave_lexer (file)))
04a7953496a7 create base class for parser; use reference for curr_lexer
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diff changeset
481 { }
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diff changeset
482
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diff changeset
483 octave_parser (const std::string& eval_string)
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diff changeset
484 : octave_base_parser (*(new octave_lexer (eval_string)))
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diff changeset
485 { }
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diff changeset
486
16335
bef822a80ffb if not interactive, bypass readline and read stdin as a file (bug #38520)
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diff changeset
487 octave_parser (octave_lexer& lxr)
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diff changeset
488 : octave_base_parser (lxr)
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diff changeset
489 { }
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John W. Eaton <jwe@octave.org>
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diff changeset
490
16287
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491 ~octave_parser (void) { }
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diff changeset
492
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diff changeset
493 int run (void);
16133
249d62b3fac8 new class for parser state
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diff changeset
494
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diff changeset
495 private:
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diff changeset
496
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497 // No copying!
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diff changeset
498
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diff changeset
499 octave_parser (const octave_parser&);
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parents: 16122
diff changeset
500
249d62b3fac8 new class for parser state
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diff changeset
501 octave_parser& operator = (const octave_parser&);
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diff changeset
502 };
249d62b3fac8 new class for parser state
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diff changeset
503
16294
0925d1f6875e push parser/lexer interface
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diff changeset
504 class
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diff changeset
505 octave_push_parser : public octave_base_parser
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diff changeset
506 {
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507 public:
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diff changeset
508
0925d1f6875e push parser/lexer interface
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diff changeset
509 octave_push_parser (void)
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diff changeset
510 : octave_base_parser (*(new octave_push_lexer ())), parser_state (0)
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diff changeset
511 {
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diff changeset
512 init ();
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diff changeset
513 }
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parents: 16293
diff changeset
514
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diff changeset
515 ~octave_push_parser (void);
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diff changeset
516
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diff changeset
517 void init (void);
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diff changeset
518
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519 int run (const std::string& input, bool eof);
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diff changeset
520
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521 private:
0925d1f6875e push parser/lexer interface
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diff changeset
522
0925d1f6875e push parser/lexer interface
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diff changeset
523 // Internal state of the Bison parser.
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diff changeset
524 void *parser_state;
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diff changeset
525
0925d1f6875e push parser/lexer interface
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diff changeset
526 // No copying!
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parents: 16293
diff changeset
527
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diff changeset
528 octave_push_parser (const octave_push_parser&);
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diff changeset
529
0925d1f6875e push parser/lexer interface
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diff changeset
530 octave_push_parser& operator = (const octave_push_parser&);
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diff changeset
531 };
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diff changeset
532
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
533 #endif