annotate libinterp/parse-tree/parse.h @ 16136:ed36d5543b27

don't declare octave_parser member functions static * parse.h (class octave_parser): Don't declare new member functions as static. * oct-parse.yy (octave_parser::make_unwind_command, octave_parser::make_try_command): Rename cleanup arg to cleanup_stmts.
author John W. Eaton <jwe@octave.org>
date Wed, 27 Feb 2013 11:14:44 -0500
parents ec9c6222ef5a
children 284e2ca86ef7
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1 /*
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2
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72c96de7a403 maint: update copyright notices for 2012
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3 Copyright (C) 1993-2012 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_parse_h)
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24 #define octave_parse_h 1
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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
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32 #include "token.h"
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33
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34 extern int octave_lex (void);
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35
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36 class octave_comment_list;
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37 class octave_function;
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38 class octave_user_function;
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39 class tree;
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40 class tree_anon_fcn_handle;
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41 class tree_argument_list;
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42 class tree_cell;
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43 class tree_colon_expression;
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44 class tree_command;
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45 class tree_constant;
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46 class tree_decl_command;
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47 class tree_decl_init_list;
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48 class tree_expression;
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49 class tree_fcn_handle;
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50 class tree_function_def;
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51 class tree_identifier;
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52 class tree_if_clause;
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53 class tree_if_command;
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54 class tree_if_command_list;
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55 class tree_index_expression;
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56 class tree_matrix;
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57 class tree_matrix;
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58 class tree_parameter_list;
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59 class tree_statement;
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60 class tree_statement_list;
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61 class tree_statement_listtree_statement;
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62 class tree_switch_case;
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63 class tree_switch_case_list;
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64 class tree_switch_command;
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66 #include "oct-obj.h"
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67
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68 // Nonzero means print parser debugging info (-d).
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69 extern int octave_debug;
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71 // Buffer for help text snagged from function files.
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72 extern std::stack<std::string> help_buf;
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73
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74 // TRUE means we are using readline.
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75 extern bool line_editing;
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76
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77 // TRUE means we printed messages about reading startup files.
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78 extern bool reading_startup_message_printed;
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79
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80 // TRUE means input is coming from startup file.
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81 extern bool input_from_startup_file;
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82
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83 // Name of the current class when we are parsing class methods or
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84 // constructors.
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85 extern std::string current_class_name;
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86
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87 extern OCTINTERP_API std::string
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88 get_help_from_file (const std::string& nm, bool& symbol_found,
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89 std::string& file);
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91 extern OCTINTERP_API std::string
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92 get_help_from_file (const std::string& nm, bool& symbol_found);
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93
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94 extern OCTINTERP_API std::string lookup_autoload (const std::string& nm);
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95
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96 extern OCTINTERP_API string_vector autoloaded_functions (void);
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98 extern OCTINTERP_API string_vector reverse_lookup_autoload (const std::string& nm);
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99
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100 extern OCTINTERP_API octave_function *
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101 load_fcn_from_file (const std::string& file_name,
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102 const std::string& dir_name = std::string (),
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103 const std::string& dispatch_type = std::string (),
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104 const std::string& fcn_name = std::string (),
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105 bool autoload = false);
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106
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107 extern OCTINTERP_API void
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108 source_file (const std::string& file_name,
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109 const std::string& context = std::string (),
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110 bool verbose = false, bool require_file = true,
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111 const std::string& warn_for = std::string ());
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112
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113 extern OCTINTERP_API octave_value_list
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114 feval (const std::string& name,
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115 const octave_value_list& args = octave_value_list (),
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116 int nargout = 0);
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117
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118 extern OCTINTERP_API octave_value_list
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119 feval (octave_function *fcn,
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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 (const octave_value_list& args, int nargout = 0);
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125
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126 extern OCTINTERP_API octave_value_list
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127 eval_string (const std::string&, bool silent, int& parse_status, int hargout);
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128
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129 extern OCTINTERP_API octave_value
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130 eval_string (const std::string&, bool silent, int& parse_status);
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131
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132 extern OCTINTERP_API void cleanup_statement_list (tree_statement_list **lst);
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133
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134 extern OCTINTERP_API int octave_parse_input (void);
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135
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136 class
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137 octave_parser
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138 {
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139 public:
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140
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141 octave_parser (void) { }
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142
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143 ~octave_parser (void) { }
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144
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145 // Error mesages for mismatched end tokens.
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146 void end_error (const char *type, token::end_tok_type ettype, int l, int c);
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147
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148 // Check to see that end tokens are properly matched.
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149 bool end_token_ok (token *tok, token::end_tok_type expected);
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150
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151 // Maybe print a warning if an assignment expression is used as the
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152 // test in a logical expression.
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153 void maybe_warn_assign_as_truth_value (tree_expression *expr);
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154
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155 // Maybe print a warning about switch labels that aren't constants.
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156 void maybe_warn_variable_switch_label (tree_expression *expr);
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157
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158 // Finish building a range.
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159 tree_expression *finish_colon_expression (tree_colon_expression *e);
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160
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161 // Build a constant.
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162 tree_constant *make_constant (int op, token *tok_val);
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163
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164 // Build a function handle.
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165 tree_fcn_handle *make_fcn_handle (token *tok_val);
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166
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167 // Build an anonymous function handle.
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168 tree_anon_fcn_handle *
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169 make_anon_fcn_handle (tree_parameter_list *param_list, tree_statement *stmt);
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170
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171 // Build a binary expression.
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172 tree_expression *
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173 make_binary_op (int op, tree_expression *op1, token *tok_val,
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174 tree_expression *op2);
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175
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176 // Build a boolean expression.
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177 tree_expression *
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178 make_boolean_op (int op, tree_expression *op1, token *tok_val,
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179 tree_expression *op2);
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180
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181 // Build a prefix expression.
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182 tree_expression *
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183 make_prefix_op (int op, tree_expression *op1, token *tok_val);
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184
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185 // Build a postfix expression.
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186 tree_expression *
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187 make_postfix_op (int op, tree_expression *op1, token *tok_val);
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188
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189 // Build an unwind-protect command.
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190 tree_command *
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191 make_unwind_command (token *unwind_tok, tree_statement_list *body,
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192 tree_statement_list *cleanup, token *end_tok,
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193 octave_comment_list *lc, octave_comment_list *mc);
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194
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195 // Build a try-catch command.
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196 tree_command *
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197 make_try_command (token *try_tok, tree_statement_list *body,
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198 tree_statement_list *cleanup, token *end_tok,
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199 octave_comment_list *lc, octave_comment_list *mc);
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200
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201 // Build a while command.
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202 tree_command *
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203 make_while_command (token *while_tok, tree_expression *expr,
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204 tree_statement_list *body, token *end_tok,
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205 octave_comment_list *lc);
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206
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207 // Build a do-until command.
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208 tree_command *
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209 make_do_until_command (token *until_tok, tree_statement_list *body,
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210 tree_expression *expr, octave_comment_list *lc);
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211
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212 // Build a for command.
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213 tree_command *
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214 make_for_command (int tok_id, token *for_tok, tree_argument_list *lhs,
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215 tree_expression *expr, tree_expression *maxproc,
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216 tree_statement_list *body, token *end_tok,
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217 octave_comment_list *lc);
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218
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219 // Build a break command.
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220 tree_command *make_break_command (token *break_tok);
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221
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222 // Build a continue command.
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223 tree_command *make_continue_command (token *continue_tok);
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224
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225 // Build a return command.
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226 tree_command *make_return_command (token *return_tok);
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227
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228 // Start an if command.
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229 tree_if_command_list *
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230 start_if_command (tree_expression *expr, tree_statement_list *list);
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231
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232 // Finish an if command.
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233 tree_if_command *
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234 finish_if_command (token *if_tok, tree_if_command_list *list,
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235 token *end_tok, octave_comment_list *lc);
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236
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237 // Build an elseif clause.
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238 tree_if_clause *
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239 make_elseif_clause (token *elseif_tok, tree_expression *expr,
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240 tree_statement_list *list, octave_comment_list *lc);
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241
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242 // Finish a switch command.
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243 tree_switch_command *
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244 finish_switch_command (token *switch_tok, tree_expression *expr,
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245 tree_switch_case_list *list, token *end_tok,
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246 octave_comment_list *lc);
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247
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248 // Build a switch case.
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249 tree_switch_case *
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250 make_switch_case (token *case_tok, tree_expression *expr,
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251 tree_statement_list *list, octave_comment_list *lc);
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252
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253 // Build an assignment to a variable.
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254 tree_expression *
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255 make_assign_op (int op, tree_argument_list *lhs, token *eq_tok,
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256 tree_expression *rhs);
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257
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258 // Define a script.
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259 void make_script (tree_statement_list *cmds, tree_statement *end_script);
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260
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261 // Begin defining a function.
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262 octave_user_function *
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263 start_function (tree_parameter_list *param_list, tree_statement_list *body,
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264 tree_statement *end_function);
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265
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266 // Create a no-op statement for end_function.
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267 tree_statement *make_end (const std::string& type, int l, int c);
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268
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269 // Do most of the work for defining a function.
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270 octave_user_function *
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271 frob_function (const std::string& fname, octave_user_function *fcn);
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272
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273 // Finish defining a function.
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274 tree_function_def *
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275 finish_function (tree_parameter_list *ret_list,
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276 octave_user_function *fcn, octave_comment_list *lc);
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277
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278 // Reset state after parsing function.
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279 void
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280 recover_from_parsing_function (void);
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281
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282 // Make an index expression.
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283 tree_index_expression *
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284 make_index_expression (tree_expression *expr,
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285 tree_argument_list *args, char type);
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286
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287 // Make an indirect reference expression.
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288 tree_index_expression *
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289 make_indirect_ref (tree_expression *expr, const std::string&);
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290
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291 // Make an indirect reference expression with dynamic field name.
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292 tree_index_expression *
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293 make_indirect_ref (tree_expression *expr, tree_expression *field);
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294
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295 // Make a declaration command.
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296 tree_decl_command *
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297 make_decl_command (int tok, token *tok_val, tree_decl_init_list *lst);
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298
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299 // Validate argument list forming a matrix or cell row.
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300 tree_argument_list *validate_matrix_row (tree_argument_list *row);
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301
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302 // Finish building a matrix list.
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303 tree_expression *finish_matrix (tree_matrix *m);
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304
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305 // Finish building a cell list.
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306 tree_expression *finish_cell (tree_cell *c);
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307
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308 // Maybe print a warning. Duh.
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309 void maybe_warn_missing_semi (tree_statement_list *);
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310
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311 // Set the print flag for a statement based on the separator type.
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312 tree_statement_list *
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313 set_stmt_print_flag (tree_statement_list *, char, bool);
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314
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315 // Create a statement list.
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316 tree_statement_list *make_statement_list (tree_statement *stmt);
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317
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318 // Append a statement to an existing statement list.
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319 tree_statement_list *
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320 append_statement_list (tree_statement_list *list, char sep,
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321 tree_statement *stmt, bool warn_missing_semi);
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322
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323 // For unwind protect.
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324 static void cleanup (octave_parser *parser) { delete parser; }
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325
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326 private:
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327
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328 // No copying!
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329
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330 octave_parser (const octave_parser&);
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331
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332 octave_parser& operator = (const octave_parser&);
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333 };
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334
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335 // The current state of the parser.
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336 extern octave_parser *curr_parser;
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337
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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338 #endif