// A Bison parser, made by GNU Bison 3.0.4. // Skeleton implementation for Bison LALR(1) parsers in C++ // Copyright (C) 2002-2015 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 // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see . // As a special exception, you may create a larger work that contains // part or all of the Bison parser skeleton and distribute that work // under terms of your choice, so long as that work isn't itself a // parser generator using the skeleton or a modified version thereof // as a parser skeleton. Alternatively, if you modify or redistribute // the parser skeleton itself, you may (at your option) remove this // special exception, which will cause the skeleton and the resulting // Bison output files to be licensed under the GNU General Public // License without this special exception. // This special exception was added by the Free Software Foundation in // version 2.2 of Bison. // First part of user declarations. #line 37 "parser.cc" // lalr1.cc:404 # ifndef YY_NULLPTR # if defined __cplusplus && 201103L <= __cplusplus # define YY_NULLPTR nullptr # else # define YY_NULLPTR 0 # endif # endif #include "parser.h" // User implementation prologue. #line 51 "parser.cc" // lalr1.cc:412 // Unqualified %code blocks. #line 32 "parser.yy" // lalr1.cc:413 # include "eval_context.h" #line 57 "parser.cc" // lalr1.cc:413 #ifndef YY_ # if defined YYENABLE_NLS && YYENABLE_NLS # if ENABLE_NLS # include // FIXME: INFRINGES ON USER NAME SPACE. # define YY_(msgid) dgettext ("bison-runtime", msgid) # endif # endif # ifndef YY_ # define YY_(msgid) msgid # endif #endif #define YYRHSLOC(Rhs, K) ((Rhs)[K].location) /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. If N is 0, then set CURRENT to the empty location which ends the previous symbol: RHS[0] (always defined). */ # ifndef YYLLOC_DEFAULT # define YYLLOC_DEFAULT(Current, Rhs, N) \ do \ if (N) \ { \ (Current).begin = YYRHSLOC (Rhs, 1).begin; \ (Current).end = YYRHSLOC (Rhs, N).end; \ } \ else \ { \ (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end; \ } \ while (/*CONSTCOND*/ false) # endif // Suppress unused-variable warnings by "using" E. #define YYUSE(E) ((void) (E)) // Enable debugging if requested. #if YYDEBUG // A pseudo ostream that takes yydebug_ into account. # define YYCDEBUG if (yydebug_) (*yycdebug_) # define YY_SYMBOL_PRINT(Title, Symbol) \ do { \ if (yydebug_) \ { \ *yycdebug_ << Title << ' '; \ yy_print_ (*yycdebug_, Symbol); \ *yycdebug_ << std::endl; \ } \ } while (false) # define YY_REDUCE_PRINT(Rule) \ do { \ if (yydebug_) \ yy_reduce_print_ (Rule); \ } while (false) # define YY_STACK_PRINT() \ do { \ if (yydebug_) \ yystack_print_ (); \ } while (false) #else // !YYDEBUG # define YYCDEBUG if (false) std::cerr # define YY_SYMBOL_PRINT(Title, Symbol) YYUSE(Symbol) # define YY_REDUCE_PRINT(Rule) static_cast(0) # define YY_STACK_PRINT() static_cast(0) #endif // !YYDEBUG #define yyerrok (yyerrstatus_ = 0) #define yyclearin (yyla.clear ()) #define YYACCEPT goto yyacceptlab #define YYABORT goto yyabortlab #define YYERROR goto yyerrorlab #define YYRECOVERING() (!!yyerrstatus_) #line 13 "parser.yy" // lalr1.cc:479 namespace isc { namespace eval { #line 143 "parser.cc" // lalr1.cc:479 /* Return YYSTR after stripping away unnecessary quotes and backslashes, so that it's suitable for yyerror. The heuristic is that double-quoting is unnecessary unless the string contains an apostrophe, a comma, or backslash (other than backslash-backslash). YYSTR is taken from yytname. */ std::string EvalParser::yytnamerr_ (const char *yystr) { if (*yystr == '"') { std::string yyr = ""; char const *yyp = yystr; for (;;) switch (*++yyp) { case '\'': case ',': goto do_not_strip_quotes; case '\\': if (*++yyp != '\\') goto do_not_strip_quotes; // Fall through. default: yyr += *yyp; break; case '"': return yyr; } do_not_strip_quotes: ; } return yystr; } /// Build a parser object. EvalParser::EvalParser (EvalContext& ctx_yyarg) : #if YYDEBUG yydebug_ (false), yycdebug_ (&std::cerr), #endif ctx (ctx_yyarg) {} EvalParser::~EvalParser () {} /*---------------. | Symbol types. | `---------------*/ // by_state. inline EvalParser::by_state::by_state () : state (empty_state) {} inline EvalParser::by_state::by_state (const by_state& other) : state (other.state) {} inline void EvalParser::by_state::clear () { state = empty_state; } inline void EvalParser::by_state::move (by_state& that) { state = that.state; that.clear (); } inline EvalParser::by_state::by_state (state_type s) : state (s) {} inline EvalParser::symbol_number_type EvalParser::by_state::type_get () const { if (state == empty_state) return empty_symbol; else return yystos_[state]; } inline EvalParser::stack_symbol_type::stack_symbol_type () {} inline EvalParser::stack_symbol_type::stack_symbol_type (state_type s, symbol_type& that) : super_type (s, that.location) { switch (that.type_get ()) { case 34: // option_repr_type value.move< TokenOption::RepresentationType > (that.value); break; case 37: // relay6_field value.move< TokenRelay6::FieldType > (that.value); break; case 24: // "constant string" case 25: // "integer" case 26: // "constant hexstring" case 27: // "option name" case 28: // "ip address" value.move< std::string > (that.value); break; case 33: // option_code value.move< uint16_t > (that.value); break; case 38: // nest_level value.move< uint8_t > (that.value); break; default: break; } // that is emptied. that.type = empty_symbol; } inline EvalParser::stack_symbol_type& EvalParser::stack_symbol_type::operator= (const stack_symbol_type& that) { state = that.state; switch (that.type_get ()) { case 34: // option_repr_type value.copy< TokenOption::RepresentationType > (that.value); break; case 37: // relay6_field value.copy< TokenRelay6::FieldType > (that.value); break; case 24: // "constant string" case 25: // "integer" case 26: // "constant hexstring" case 27: // "option name" case 28: // "ip address" value.copy< std::string > (that.value); break; case 33: // option_code value.copy< uint16_t > (that.value); break; case 38: // nest_level value.copy< uint8_t > (that.value); break; default: break; } location = that.location; return *this; } template inline void EvalParser::yy_destroy_ (const char* yymsg, basic_symbol& yysym) const { if (yymsg) YY_SYMBOL_PRINT (yymsg, yysym); } #if YYDEBUG template void EvalParser::yy_print_ (std::ostream& yyo, const basic_symbol& yysym) const { std::ostream& yyoutput = yyo; YYUSE (yyoutput); symbol_number_type yytype = yysym.type_get (); // Avoid a (spurious) G++ 4.8 warning about "array subscript is // below array bounds". if (yysym.empty ()) std::abort (); yyo << (yytype < yyntokens_ ? "token" : "nterm") << ' ' << yytname_[yytype] << " (" << yysym.location << ": "; switch (yytype) { case 24: // "constant string" #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< std::string > (); } #line 358 "parser.cc" // lalr1.cc:636 break; case 25: // "integer" #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< std::string > (); } #line 365 "parser.cc" // lalr1.cc:636 break; case 26: // "constant hexstring" #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< std::string > (); } #line 372 "parser.cc" // lalr1.cc:636 break; case 27: // "option name" #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< std::string > (); } #line 379 "parser.cc" // lalr1.cc:636 break; case 28: // "ip address" #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< std::string > (); } #line 386 "parser.cc" // lalr1.cc:636 break; case 33: // option_code #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< uint16_t > (); } #line 393 "parser.cc" // lalr1.cc:636 break; case 34: // option_repr_type #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< TokenOption::RepresentationType > (); } #line 400 "parser.cc" // lalr1.cc:636 break; case 37: // relay6_field #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< TokenRelay6::FieldType > (); } #line 407 "parser.cc" // lalr1.cc:636 break; case 38: // nest_level #line 78 "parser.yy" // lalr1.cc:636 { yyoutput << yysym.value.template as< uint8_t > (); } #line 414 "parser.cc" // lalr1.cc:636 break; default: break; } yyo << ')'; } #endif inline void EvalParser::yypush_ (const char* m, state_type s, symbol_type& sym) { stack_symbol_type t (s, sym); yypush_ (m, t); } inline void EvalParser::yypush_ (const char* m, stack_symbol_type& s) { if (m) YY_SYMBOL_PRINT (m, s); yystack_.push (s); } inline void EvalParser::yypop_ (unsigned int n) { yystack_.pop (n); } #if YYDEBUG std::ostream& EvalParser::debug_stream () const { return *yycdebug_; } void EvalParser::set_debug_stream (std::ostream& o) { yycdebug_ = &o; } EvalParser::debug_level_type EvalParser::debug_level () const { return yydebug_; } void EvalParser::set_debug_level (debug_level_type l) { yydebug_ = l; } #endif // YYDEBUG inline EvalParser::state_type EvalParser::yy_lr_goto_state_ (state_type yystate, int yysym) { int yyr = yypgoto_[yysym - yyntokens_] + yystate; if (0 <= yyr && yyr <= yylast_ && yycheck_[yyr] == yystate) return yytable_[yyr]; else return yydefgoto_[yysym - yyntokens_]; } inline bool EvalParser::yy_pact_value_is_default_ (int yyvalue) { return yyvalue == yypact_ninf_; } inline bool EvalParser::yy_table_value_is_error_ (int yyvalue) { return yyvalue == yytable_ninf_; } int EvalParser::parse () { // State. int yyn; /// Length of the RHS of the rule being reduced. int yylen = 0; // Error handling. int yynerrs_ = 0; int yyerrstatus_ = 0; /// The lookahead symbol. symbol_type yyla; /// The locations where the error started and ended. stack_symbol_type yyerror_range[3]; /// The return value of parse (). int yyresult; // FIXME: This shoud be completely indented. It is not yet to // avoid gratuitous conflicts when merging into the master branch. try { YYCDEBUG << "Starting parse" << std::endl; /* Initialize the stack. The initial state will be set in yynewstate, since the latter expects the semantical and the location values to have been already stored, initialize these stacks with a primary value. */ yystack_.clear (); yypush_ (YY_NULLPTR, 0, yyla); // A new symbol was pushed on the stack. yynewstate: YYCDEBUG << "Entering state " << yystack_[0].state << std::endl; // Accept? if (yystack_[0].state == yyfinal_) goto yyacceptlab; goto yybackup; // Backup. yybackup: // Try to take a decision without lookahead. yyn = yypact_[yystack_[0].state]; if (yy_pact_value_is_default_ (yyn)) goto yydefault; // Read a lookahead token. if (yyla.empty ()) { YYCDEBUG << "Reading a token: "; try { symbol_type yylookahead (yylex (ctx)); yyla.move (yylookahead); } catch (const syntax_error& yyexc) { error (yyexc); goto yyerrlab1; } } YY_SYMBOL_PRINT ("Next token is", yyla); /* If the proper action on seeing token YYLA.TYPE is to reduce or to detect an error, take that action. */ yyn += yyla.type_get (); if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.type_get ()) goto yydefault; // Reduce or error. yyn = yytable_[yyn]; if (yyn <= 0) { if (yy_table_value_is_error_ (yyn)) goto yyerrlab; yyn = -yyn; goto yyreduce; } // Count tokens shifted since error; after three, turn off error status. if (yyerrstatus_) --yyerrstatus_; // Shift the lookahead token. yypush_ ("Shifting", yyn, yyla); goto yynewstate; /*-----------------------------------------------------------. | yydefault -- do the default action for the current state. | `-----------------------------------------------------------*/ yydefault: yyn = yydefact_[yystack_[0].state]; if (yyn == 0) goto yyerrlab; goto yyreduce; /*-----------------------------. | yyreduce -- Do a reduction. | `-----------------------------*/ yyreduce: yylen = yyr2_[yyn]; { stack_symbol_type yylhs; yylhs.state = yy_lr_goto_state_(yystack_[yylen].state, yyr1_[yyn]); /* Variants are always initialized to an empty instance of the correct type. The default '$$ = $1' action is NOT applied when using variants. */ switch (yyr1_[yyn]) { case 34: // option_repr_type yylhs.value.build< TokenOption::RepresentationType > (); break; case 37: // relay6_field yylhs.value.build< TokenRelay6::FieldType > (); break; case 24: // "constant string" case 25: // "integer" case 26: // "constant hexstring" case 27: // "option name" case 28: // "ip address" yylhs.value.build< std::string > (); break; case 33: // option_code yylhs.value.build< uint16_t > (); break; case 38: // nest_level yylhs.value.build< uint8_t > (); break; default: break; } // Compute the default @$. { slice slice (yystack_, yylen); YYLLOC_DEFAULT (yylhs.location, slice, yylen); } // Perform the reduction. YY_REDUCE_PRINT (yyn); try { switch (yyn) { case 4: #line 92 "parser.yy" // lalr1.cc:859 { TokenPtr neg(new TokenNot()); ctx.expression.push_back(neg); } #line 661 "parser.cc" // lalr1.cc:859 break; case 5: #line 97 "parser.yy" // lalr1.cc:859 { TokenPtr neg(new TokenAnd()); ctx.expression.push_back(neg); } #line 670 "parser.cc" // lalr1.cc:859 break; case 6: #line 102 "parser.yy" // lalr1.cc:859 { TokenPtr neg(new TokenOr()); ctx.expression.push_back(neg); } #line 679 "parser.cc" // lalr1.cc:859 break; case 7: #line 107 "parser.yy" // lalr1.cc:859 { TokenPtr eq(new TokenEqual()); ctx.expression.push_back(eq); } #line 688 "parser.cc" // lalr1.cc:859 break; case 8: #line 112 "parser.yy" // lalr1.cc:859 { TokenPtr opt(new TokenOption(yystack_[3].value.as< uint16_t > (), TokenOption::EXISTS)); ctx.expression.push_back(opt); } #line 697 "parser.cc" // lalr1.cc:859 break; case 9: #line 117 "parser.yy" // lalr1.cc:859 { switch (ctx.getUniverse()) { case Option::V4: { TokenPtr opt(new TokenRelay4Option(yystack_[3].value.as< uint16_t > (), TokenOption::EXISTS)); ctx.expression.push_back(opt); break; } case Option::V6: // We will have relay6[123] for the DHCPv6. // In a very distant future we'll possibly be able // to mix both if we have DHCPv4-over-DHCPv6, so it // has some sense to make it explicit whether we // talk about DHCPv4 relay or DHCPv6 relay. However, // for the time being relay4 can be used in DHCPv4 // only. error(yystack_[5].location, "relay4 can only be used in DHCPv4."); } } #line 721 "parser.cc" // lalr1.cc:859 break; case 10: #line 137 "parser.yy" // lalr1.cc:859 { switch (ctx.getUniverse()) { case Option::V6: { TokenPtr opt(new TokenRelay6Option(yystack_[8].value.as< uint8_t > (), yystack_[3].value.as< uint16_t > (), TokenOption::EXISTS)); ctx.expression.push_back(opt); break; } case Option::V4: // For now we only use relay6 in DHCPv6. error(yystack_[10].location, "relay6 can only be used in DHCPv6."); } } #line 739 "parser.cc" // lalr1.cc:859 break; case 11: #line 153 "parser.yy" // lalr1.cc:859 { TokenPtr str(new TokenString(yystack_[0].value.as< std::string > ())); ctx.expression.push_back(str); } #line 748 "parser.cc" // lalr1.cc:859 break; case 12: #line 158 "parser.yy" // lalr1.cc:859 { TokenPtr hex(new TokenHexString(yystack_[0].value.as< std::string > ())); ctx.expression.push_back(hex); } #line 757 "parser.cc" // lalr1.cc:859 break; case 13: #line 163 "parser.yy" // lalr1.cc:859 { TokenPtr ip(new TokenIpAddress(yystack_[0].value.as< std::string > ())); ctx.expression.push_back(ip); } #line 766 "parser.cc" // lalr1.cc:859 break; case 14: #line 168 "parser.yy" // lalr1.cc:859 { TokenPtr opt(new TokenOption(yystack_[3].value.as< uint16_t > (), yystack_[0].value.as< TokenOption::RepresentationType > ())); ctx.expression.push_back(opt); } #line 775 "parser.cc" // lalr1.cc:859 break; case 15: #line 173 "parser.yy" // lalr1.cc:859 { switch (ctx.getUniverse()) { case Option::V4: { TokenPtr opt(new TokenRelay4Option(yystack_[3].value.as< uint16_t > (), yystack_[0].value.as< TokenOption::RepresentationType > ())); ctx.expression.push_back(opt); break; } case Option::V6: // We will have relay6[123] for the DHCPv6. // In a very distant future we'll possibly be able // to mix both if we have DHCPv4-over-DHCPv6, so it // has some sense to make it explicit whether we // talk about DHCPv4 relay or DHCPv6 relay. However, // for the time being relay4 can be used in DHCPv4 // only. error(yystack_[5].location, "relay4 can only be used in DHCPv4."); } } #line 799 "parser.cc" // lalr1.cc:859 break; case 16: #line 194 "parser.yy" // lalr1.cc:859 { switch (ctx.getUniverse()) { case Option::V6: { TokenPtr opt(new TokenRelay6Option(yystack_[8].value.as< uint8_t > (), yystack_[3].value.as< uint16_t > (), yystack_[0].value.as< TokenOption::RepresentationType > ())); ctx.expression.push_back(opt); break; } case Option::V4: // For now we only use relay6 in DHCPv6. error(yystack_[10].location, "relay6 can only be used in DHCPv6."); } } #line 817 "parser.cc" // lalr1.cc:859 break; case 17: #line 209 "parser.yy" // lalr1.cc:859 { switch (ctx.getUniverse()) { case Option::V6: { TokenPtr relay6field(new TokenRelay6(yystack_[3].value.as< uint8_t > (), yystack_[0].value.as< TokenRelay6::FieldType > ())); ctx.expression.push_back(relay6field); break; } case Option::V4: // For now we only use relay6 in DHCPv6. error(yystack_[5].location, "relay6 can only be used in DHCPv6."); } } #line 835 "parser.cc" // lalr1.cc:859 break; case 18: #line 225 "parser.yy" // lalr1.cc:859 { TokenPtr sub(new TokenSubstring()); ctx.expression.push_back(sub); } #line 844 "parser.cc" // lalr1.cc:859 break; case 19: #line 230 "parser.yy" // lalr1.cc:859 { TokenPtr conc(new TokenConcat()); ctx.expression.push_back(conc); } #line 853 "parser.cc" // lalr1.cc:859 break; case 20: #line 237 "parser.yy" // lalr1.cc:859 { yylhs.value.as< uint16_t > () = ctx.convertOptionCode(yystack_[0].value.as< std::string > (), yystack_[0].location); } #line 861 "parser.cc" // lalr1.cc:859 break; case 21: #line 241 "parser.yy" // lalr1.cc:859 { yylhs.value.as< uint16_t > () = ctx.convertOptionName(yystack_[0].value.as< std::string > (), yystack_[0].location); } #line 869 "parser.cc" // lalr1.cc:859 break; case 22: #line 247 "parser.yy" // lalr1.cc:859 { yylhs.value.as< TokenOption::RepresentationType > () = TokenOption::TEXTUAL; } #line 877 "parser.cc" // lalr1.cc:859 break; case 23: #line 251 "parser.yy" // lalr1.cc:859 { yylhs.value.as< TokenOption::RepresentationType > () = TokenOption::HEXADECIMAL; } #line 885 "parser.cc" // lalr1.cc:859 break; case 24: #line 257 "parser.yy" // lalr1.cc:859 { TokenPtr str(new TokenString(yystack_[0].value.as< std::string > ())); ctx.expression.push_back(str); } #line 894 "parser.cc" // lalr1.cc:859 break; case 25: #line 264 "parser.yy" // lalr1.cc:859 { TokenPtr str(new TokenString(yystack_[0].value.as< std::string > ())); ctx.expression.push_back(str); } #line 903 "parser.cc" // lalr1.cc:859 break; case 26: #line 269 "parser.yy" // lalr1.cc:859 { TokenPtr str(new TokenString("all")); ctx.expression.push_back(str); } #line 912 "parser.cc" // lalr1.cc:859 break; case 27: #line 275 "parser.yy" // lalr1.cc:859 { yylhs.value.as< TokenRelay6::FieldType > () = TokenRelay6::PEERADDR; } #line 918 "parser.cc" // lalr1.cc:859 break; case 28: #line 276 "parser.yy" // lalr1.cc:859 { yylhs.value.as< TokenRelay6::FieldType > () = TokenRelay6::LINKADDR; } #line 924 "parser.cc" // lalr1.cc:859 break; case 29: #line 280 "parser.yy" // lalr1.cc:859 { yylhs.value.as< uint8_t > () = ctx.convertNestLevelNumber(yystack_[0].value.as< std::string > (), yystack_[0].location); } #line 932 "parser.cc" // lalr1.cc:859 break; #line 936 "parser.cc" // lalr1.cc:859 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_NULLPTR, yylhs); } goto yynewstate; /*--------------------------------------. | yyerrlab -- here on detecting error. | `--------------------------------------*/ yyerrlab: // If not already recovering from an error, report this error. if (!yyerrstatus_) { ++yynerrs_; error (yyla.location, yysyntax_error_ (yystack_[0].state, yyla)); } yyerror_range[1].location = yyla.location; if (yyerrstatus_ == 3) { /* If just tried and failed to reuse lookahead token after an error, discard it. */ // Return failure if at end of input. if (yyla.type_get () == yyeof_) YYABORT; else if (!yyla.empty ()) { yy_destroy_ ("Error: discarding", yyla); yyla.clear (); } } // Else will try to reuse lookahead token after shifting the error token. goto yyerrlab1; /*---------------------------------------------------. | yyerrorlab -- error raised explicitly by YYERROR. | `---------------------------------------------------*/ yyerrorlab: /* Pacify compilers like GCC when the user code never invokes YYERROR and the label yyerrorlab therefore never appears in user code. */ if (false) goto yyerrorlab; yyerror_range[1].location = yystack_[yylen - 1].location; /* Do not reclaim the symbols of the rule whose action triggered this YYERROR. */ yypop_ (yylen); yylen = 0; goto yyerrlab1; /*-------------------------------------------------------------. | yyerrlab1 -- common code for both syntax error and YYERROR. | `-------------------------------------------------------------*/ yyerrlab1: yyerrstatus_ = 3; // Each real token shifted decrements this. { stack_symbol_type error_token; for (;;) { yyn = yypact_[yystack_[0].state]; if (!yy_pact_value_is_default_ (yyn)) { yyn += yyterror_; if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_) { yyn = yytable_[yyn]; if (0 < yyn) break; } } // Pop the current state because it cannot handle the error token. if (yystack_.size () == 1) YYABORT; yyerror_range[1].location = yystack_[0].location; yy_destroy_ ("Error: popping", yystack_[0]); yypop_ (); YY_STACK_PRINT (); } yyerror_range[2].location = yyla.location; YYLLOC_DEFAULT (error_token.location, yyerror_range, 2); // Shift the error token. error_token.state = yyn; yypush_ ("Shifting", error_token); } goto yynewstate; // Accept. yyacceptlab: yyresult = 0; goto yyreturn; // Abort. yyabortlab: yyresult = 1; goto yyreturn; yyreturn: if (!yyla.empty ()) yy_destroy_ ("Cleanup: discarding lookahead", yyla); /* Do not reclaim the symbols of the rule whose action triggered this YYABORT or YYACCEPT. */ yypop_ (yylen); while (1 < yystack_.size ()) { yy_destroy_ ("Cleanup: popping", yystack_[0]); yypop_ (); } return yyresult; } catch (...) { YYCDEBUG << "Exception caught: cleaning lookahead and stack" << std::endl; // Do not try to display the values of the reclaimed symbols, // as their printer might throw an exception. if (!yyla.empty ()) yy_destroy_ (YY_NULLPTR, yyla); while (1 < yystack_.size ()) { yy_destroy_ (YY_NULLPTR, yystack_[0]); yypop_ (); } throw; } } void EvalParser::error (const syntax_error& yyexc) { error (yyexc.location, yyexc.what()); } // Generate an error message. std::string EvalParser::yysyntax_error_ (state_type yystate, const symbol_type& yyla) const { // Number of reported tokens (one for the "unexpected", one per // "expected"). size_t yycount = 0; // Its maximum. enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; // Arguments of yyformat. char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; /* There are many possibilities here to consider: - If this state is a consistent state with a default action, then the only way this function was invoked is if the default action is an error action. In that case, don't check for expected tokens because there are none. - The only way there can be no lookahead present (in yyla) is if this state is a consistent state with a default action. Thus, detecting the absence of a lookahead is sufficient to determine that there is no unexpected or expected token to report. In that case, just report a simple "syntax error". - Don't assume there isn't a lookahead just because this state is a consistent state with a default action. There might have been a previous inconsistent state, consistent state with a non-default action, or user semantic action that manipulated yyla. (However, yyla is currently not documented for users.) - Of course, the expected token list depends on states to have correct lookahead information, and it depends on the parser not to perform extra reductions after fetching a lookahead from the scanner and before detecting a syntax error. Thus, state merging (from LALR or IELR) and default reductions corrupt the expected token list. However, the list is correct for canonical LR with one exception: it will still contain any token that will not be accepted due to an error action in a later state. */ if (!yyla.empty ()) { int yytoken = yyla.type_get (); yyarg[yycount++] = yytname_[yytoken]; int yyn = yypact_[yystate]; if (!yy_pact_value_is_default_ (yyn)) { /* Start YYX at -YYN if negative to avoid negative indexes in YYCHECK. In other words, skip the first -YYN actions for this state because they are default actions. */ int yyxbegin = yyn < 0 ? -yyn : 0; // Stay within bounds of both yycheck and yytname. int yychecklim = yylast_ - yyn + 1; int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_; for (int yyx = yyxbegin; yyx < yyxend; ++yyx) if (yycheck_[yyx + yyn] == yyx && yyx != yyterror_ && !yy_table_value_is_error_ (yytable_[yyx + yyn])) { if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) { yycount = 1; break; } else yyarg[yycount++] = yytname_[yyx]; } } } char const* yyformat = YY_NULLPTR; switch (yycount) { #define YYCASE_(N, S) \ case N: \ yyformat = S; \ break YYCASE_(0, YY_("syntax error")); YYCASE_(1, YY_("syntax error, unexpected %s")); YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s")); YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s")); YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s")); YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s")); #undef YYCASE_ } std::string yyres; // Argument number. size_t yyi = 0; for (char const* yyp = yyformat; *yyp; ++yyp) if (yyp[0] == '%' && yyp[1] == 's' && yyi < yycount) { yyres += yytnamerr_ (yyarg[yyi++]); ++yyp; } else yyres += *yyp; return yyres; } const signed char EvalParser::yypact_ninf_ = -47; const signed char EvalParser::yytable_ninf_ = -1; const signed char EvalParser::yypact_[] = { 11, 11, 11, -4, -1, 3, 21, 27, -47, -47, -47, 49, 51, 28, 44, -47, -2, -2, 19, 36, 36, -47, 11, 11, 36, -47, -47, -47, 46, 48, -47, 57, 59, 60, 61, 43, 54, -47, 71, -47, 62, 63, 64, -2, -2, 19, 56, 36, 23, 35, -5, 67, 68, 69, -47, 65, 81, -47, -47, -47, -47, -47, -47, 72, -47, -47, -47, 73, 74, 75, -16, -47, -2, 53, 53, 6, -47, -47, 84, 77, 79, -47, 78, -2, 50, 80, -47, -47, 82, 53 }; const unsigned char EvalParser::yydefact_[] = { 0, 0, 0, 0, 0, 0, 0, 0, 11, 12, 13, 0, 2, 0, 0, 4, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 20, 21, 0, 0, 29, 0, 0, 0, 0, 0, 0, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 0, 0, 22, 23, 8, 14, 9, 15, 0, 27, 28, 17, 0, 0, 0, 0, 19, 0, 0, 0, 0, 26, 25, 0, 0, 0, 18, 0, 0, 0, 0, 10, 16, 0, 0 }; const signed char EvalParser::yypgoto_[] = { -47, -47, 10, -18, -17, -46, -47, -47, -47, 52 }; const signed char EvalParser::yydefgoto_[] = { -1, 11, 12, 13, 28, 60, 55, 78, 66, 31 }; const unsigned char EvalParser::yytable_[] = { 29, 35, 36, 62, 63, 76, 39, 64, 65, 77, 16, 14, 15, 17, 1, 80, 2, 18, 64, 65, 3, 4, 5, 26, 19, 27, 51, 52, 62, 56, 20, 6, 37, 38, 7, 8, 24, 9, 87, 10, 57, 58, 59, 87, 30, 32, 33, 34, 25, 21, 22, 23, 57, 58, 61, 79, 6, 22, 23, 7, 8, 40, 9, 41, 10, 46, 85, 57, 58, 86, 57, 58, 42, 43, 44, 45, 47, 22, 48, 49, 50, 54, 67, 68, 69, 71, 72, 70, 81, 73, 74, 75, 82, 83, 84, 88, 0, 53, 89 }; const signed char EvalParser::yycheck_[] = { 17, 19, 20, 49, 9, 21, 24, 12, 13, 25, 14, 1, 2, 14, 3, 9, 5, 14, 12, 13, 9, 10, 11, 25, 3, 27, 43, 44, 74, 47, 3, 20, 22, 23, 23, 24, 8, 26, 84, 28, 17, 18, 19, 89, 25, 9, 10, 11, 4, 0, 6, 7, 17, 18, 19, 72, 20, 6, 7, 23, 24, 15, 26, 15, 28, 22, 83, 17, 18, 19, 17, 18, 15, 14, 14, 14, 22, 6, 16, 16, 16, 25, 15, 15, 15, 4, 14, 22, 4, 16, 16, 16, 15, 14, 16, 15, -1, 45, 16 }; const unsigned char EvalParser::yystos_[] = { 0, 3, 5, 9, 10, 11, 20, 23, 24, 26, 28, 30, 31, 32, 31, 31, 14, 14, 14, 3, 3, 0, 6, 7, 8, 4, 25, 27, 33, 33, 25, 38, 9, 10, 11, 32, 32, 31, 31, 32, 15, 15, 15, 14, 14, 14, 22, 22, 16, 16, 16, 33, 33, 38, 25, 35, 32, 17, 18, 19, 34, 19, 34, 9, 12, 13, 37, 15, 15, 15, 22, 4, 14, 16, 16, 16, 21, 25, 36, 33, 9, 4, 15, 14, 16, 33, 19, 34, 15, 16 }; const unsigned char EvalParser::yyr1_[] = { 0, 29, 30, 31, 31, 31, 31, 31, 31, 31, 31, 32, 32, 32, 32, 32, 32, 32, 32, 32, 33, 33, 34, 34, 35, 36, 36, 37, 37, 38 }; const unsigned char EvalParser::yyr2_[] = { 0, 2, 1, 3, 2, 3, 3, 3, 6, 6, 11, 1, 1, 1, 6, 6, 11, 6, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; // YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. // First, the terminals, then, starting at \a yyntokens_, nonterminals. const char* const EvalParser::yytname_[] = { "\"end of file\"", "error", "$undefined", "\"(\"", "\")\"", "\"not\"", "\"and\"", "\"or\"", "\"==\"", "\"option\"", "\"relay4\"", "\"relay6\"", "\"peeraddr\"", "\"linkaddr\"", "\"[\"", "\"]\"", "\".\"", "\"text\"", "\"hex\"", "\"exists\"", "\"substring\"", "\"all\"", "\",\"", "\"concat\"", "\"constant string\"", "\"integer\"", "\"constant hexstring\"", "\"option name\"", "\"ip address\"", "$accept", "expression", "bool_expr", "string_expr", "option_code", "option_repr_type", "start_expr", "length_expr", "relay6_field", "nest_level", YY_NULLPTR }; #if YYDEBUG const unsigned short int EvalParser::yyrline_[] = { 0, 87, 87, 90, 91, 96, 101, 106, 111, 116, 136, 152, 157, 162, 167, 172, 193, 208, 224, 229, 236, 240, 246, 250, 256, 263, 268, 275, 276, 279 }; // Print the state stack on the debug stream. void EvalParser::yystack_print_ () { *yycdebug_ << "Stack now"; for (stack_type::const_iterator i = yystack_.begin (), i_end = yystack_.end (); i != i_end; ++i) *yycdebug_ << ' ' << i->state; *yycdebug_ << std::endl; } // Report on the debug stream that the rule \a yyrule is going to be reduced. void EvalParser::yy_reduce_print_ (int yyrule) { unsigned int yylno = yyrline_[yyrule]; int yynrhs = yyr2_[yyrule]; // Print the symbols being reduced, and their result. *yycdebug_ << "Reducing stack by rule " << yyrule - 1 << " (line " << yylno << "):" << std::endl; // The symbols being reduced. for (int yyi = 0; yyi < yynrhs; yyi++) YY_SYMBOL_PRINT (" $" << yyi + 1 << " =", yystack_[(yynrhs) - (yyi + 1)]); } #endif // YYDEBUG #line 13 "parser.yy" // lalr1.cc:1167 } } // isc::eval #line 1354 "parser.cc" // lalr1.cc:1167 #line 288 "parser.yy" // lalr1.cc:1168 void isc::eval::EvalParser::error(const location_type& loc, const std::string& what) { ctx.error(loc, what); }