X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ad9d4f9f2e5b74c1306b8d2f6227f37a59832069..975bb564319aa4f4204c48aba265757ba207a80f:/data/lalr1.cc diff --git a/data/lalr1.cc b/data/lalr1.cc index cb61ebb7..72d1950b 100644 --- a/data/lalr1.cc +++ b/data/lalr1.cc @@ -1,6 +1,6 @@ # C++ skeleton for Bison -# Copyright (C) 2002-2013 Free Software Foundation, Inc. +# Copyright (C) 2002-2014 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -131,7 +131,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))])]) m4_pushdef([b4_copyright_years], - [2002-2013]) + [2002-2014]) m4_define([b4_parser_class_name], [b4_percent_define_get([[parser_class_name]])]) @@ -220,8 +220,8 @@ b4_location_define])])[ /// Compute post-reduction state. /// \param yystate the current state - /// \param yylhs the nonterminal to push on the stack - state_type yy_lr_goto_state_ (state_type yystate, int yylhs); + /// \param yysym the nonterminal to push on the stack + state_type yy_lr_goto_state_ (state_type yystate, int yysym); /// Whether the given \c yypact_ value indicates a defaulted state. /// \param yyvalue the value to check @@ -671,13 +671,13 @@ m4_if(b4_prefix, [yy], [], #endif // ]b4_api_PREFIX[DEBUG inline ]b4_parser_class_name[::state_type - ]b4_parser_class_name[::yy_lr_goto_state_ (state_type yystate, int yylhs) + ]b4_parser_class_name[::yy_lr_goto_state_ (state_type yystate, int yysym) { - int yyr = yypgoto_[yylhs - yyntokens_] + yystate; + int yyr = yypgoto_[yysym - yyntokens_] + yystate; if (0 <= yyr && yyr <= yylast_ && yycheck_[yyr] == yystate) return yytable_[yyr]; else - return yydefgoto_[yylhs - yyntokens_]; + return yydefgoto_[yysym - yyntokens_]; } inline bool @@ -700,6 +700,7 @@ m4_if(b4_prefix, [yy], [], // State. int yyn; + /// Length of the RHS of the rule being reduced. int yylen = 0; // Error handling. @@ -712,9 +713,6 @@ m4_if(b4_prefix, [yy], [], /// The locations where the error started and ended. stack_symbol_type yyerror_range[3];]])[ - /// $$ and @@$. - stack_symbol_type yylhs; - /// The return value of parse (). int yyresult; @@ -735,7 +733,7 @@ b4_dollar_popdef])[]dnl location values to have been already stored, initialize these stacks with a primary value. */ yystack_.clear (); - yypush_ (YY_NULL, 0, yyla); + yypush_ (YY_NULLPTR, 0, yyla); // A new symbol was pushed on the stack. yynewstate: @@ -815,52 +813,55 @@ b4_dollar_popdef])[]dnl `-----------------------------*/ yyreduce: yylen = yyr2_[yyn]; - yylhs.state = yy_lr_goto_state_(yystack_[yylen].state, yyr1_[yyn]);]b4_variant_if([ - /* Variants are always initialized to an empty instance of the - correct type. The default $$=$1 action is NOT applied when using - variants. */ - b4_symbol_variant([[yyr1_@{yyn@}]], [yylhs.value], [build])],[ - /* If YYLEN is nonzero, implement the default value of the action: - '$$ = $1'. Otherwise, use the top of the stack. - - Otherwise, the following line sets YYLHS.VALUE to garbage. - This behavior is undocumented and Bison - users should not rely upon it. */ - if (yylen) - yylhs.value = yystack_@{yylen - 1@}.value; - else - yylhs.value = yystack_@{0@}.value;])[ + { + stack_symbol_type yylhs; + yylhs.state = yy_lr_goto_state_(yystack_[yylen].state, yyr1_[yyn]);]b4_variant_if([ + /* Variants are always initialized to an empty instance of the + correct type. The default '$$ = $1' action is NOT applied + when using variants. */ + b4_symbol_variant([[yyr1_@{yyn@}]], [yylhs.value], [build])], [ + /* If YYLEN is nonzero, implement the default value of the + action: '$$ = $1'. Otherwise, use the top of the stack. + + Otherwise, the following line sets YYLHS.VALUE to garbage. + This behavior is undocumented and Bison users should not rely + upon it. */ + if (yylen) + yylhs.value = yystack_@{yylen - 1@}.value; + else + yylhs.value = yystack_@{0@}.value;])[ ]b4_locations_if([dnl [ - // Compute the default @@$. - { - slice slice (yystack_, yylen); - YYLLOC_DEFAULT (yylhs.location, slice, yylen); - }]])[ - - // Perform the reduction. - YY_REDUCE_PRINT (yyn); - try + // Compute the default @@$. { - switch (yyn) - { + slice slice (yystack_, yylen); + YYLLOC_DEFAULT (yylhs.location, slice, yylen); + }]])[ + + // Perform the reduction. + YY_REDUCE_PRINT (yyn); + try + { + switch (yyn) + { ]b4_user_actions[ - default: - break; - } - } - catch (const syntax_error& yyexc) - { - error (yyexc); - YYERROR; - } - YY_SYMBOL_PRINT ("-> $$ =", yylhs); - yypop_ (yylen); - yylen = 0; - YY_STACK_PRINT (); + default: + break; + } + } + catch (const syntax_error& yyexc) + { + error (yyexc); + YYERROR; + } + YY_SYMBOL_PRINT ("-> $$ =", yylhs); + yypop_ (yylen); + yylen = 0; + YY_STACK_PRINT (); - // Shift the result of the reduction. - yypush_ (YY_NULL, yylhs); + // Shift the result of the reduction. + yypush_ (YY_NULLPTR, yylhs); + } goto yynewstate; /*--------------------------------------. @@ -907,10 +908,7 @@ b4_dollar_popdef])[]dnl code. */ if (false) goto yyerrorlab;]b4_locations_if([[ - yyerror_range[1].location = yystack_[yylen - 1].location;]])b4_variant_if([[ - /* $$ was initialized before running the user action. */ - YY_SYMBOL_PRINT ("Error: discarding", yylhs); - yylhs.~stack_symbol_type();]])[ + yyerror_range[1].location = yystack_[yylen - 1].location;]])[ /* Do not reclaim the symbols of the rule whose action triggered this YYERROR. */ yypop_ (yylen); @@ -989,11 +987,11 @@ b4_dollar_popdef])[]dnl // Do not try to display the values of the reclaimed symbols, // as their printer might throw an exception. if (!yyempty) - yy_destroy_ (YY_NULL, yyla); + yy_destroy_ (YY_NULLPTR, yyla); while (1 < yystack_.size ()) { - yy_destroy_ (YY_NULL, yystack_[0]); + yy_destroy_ (YY_NULLPTR, yystack_[0]); yypop_ (); } throw; @@ -1075,7 +1073,7 @@ b4_error_verbose_if([state_type yystate, symbol_number_type yytoken], } } - char const* yyformat = YY_NULL; + char const* yyformat = YY_NULLPTR; switch (yycount) { #define YYCASE_(N, S) \