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parser.cpp
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parser.cpp
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// A Bison parser, made by GNU Bison 3.7.2.
// Skeleton implementation for Bison LALR(1) parsers in C++
// Copyright (C) 2002-2015, 2018-2020 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 <http://www.gnu.org/licenses/>.
// 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.
// DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual,
// especially those whose name start with YY_ or yy_. They are
// private implementation details that can be changed or removed.
// First part of user prologue.
#line 1 "parser.y"
#include <iostream>
#include <string>
#define YYERROR_VERBOSE 1
extern FILE *yyin;
extern int yylex();
extern void yyerror(char const* msg);
extern int line;
#define BUFER_SIZE 1024
char buffer[BUFER_SIZE];
typedef struct str {
char * val;
size_t cap;
size_t len;
} str;
#line 62 "parser.cpp"
#include "parser.h"
#ifndef YY_
# if defined YYENABLE_NLS && YYENABLE_NLS
# if ENABLE_NLS
# include <libintl.h> // FIXME: INFRINGES ON USER NAME SPACE.
# define YY_(msgid) dgettext ("bison-runtime", msgid)
# endif
# endif
# ifndef YY_
# define YY_(msgid) msgid
# endif
#endif
// Whether we are compiled with exception support.
#ifndef YY_EXCEPTIONS
# if defined __GNUC__ && !defined __EXCEPTIONS
# define YY_EXCEPTIONS 0
# else
# define YY_EXCEPTIONS 1
# endif
#endif
// 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_ << '\n'; \
} \
} while (false)
# define YY_REDUCE_PRINT(Rule) \
do { \
if (yydebug_) \
yy_reduce_print_ (Rule); \
} while (false)
# define YY_STACK_PRINT() \
do { \
if (yydebug_) \
yy_stack_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<void> (0)
# define YY_STACK_PRINT() static_cast<void> (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_)
namespace yy {
#line 140 "parser.cpp"
/// Build a parser object.
parser::parser ()
#if YYDEBUG
: yydebug_ (false),
yycdebug_ (&std::cerr)
#else
#endif
{}
parser::~parser ()
{}
parser::syntax_error::~syntax_error () YY_NOEXCEPT YY_NOTHROW
{}
/*---------------.
| symbol kinds. |
`---------------*/
// basic_symbol.
template <typename Base>
parser::basic_symbol<Base>::basic_symbol (const basic_symbol& that)
: Base (that)
, value (that.value)
{}
/// Constructor for valueless symbols.
template <typename Base>
parser::basic_symbol<Base>::basic_symbol (typename Base::kind_type t)
: Base (t)
, value ()
{}
template <typename Base>
parser::basic_symbol<Base>::basic_symbol (typename Base::kind_type t, YY_RVREF (semantic_type) v)
: Base (t)
, value (YY_MOVE (v))
{}
template <typename Base>
parser::symbol_kind_type
parser::basic_symbol<Base>::type_get () const YY_NOEXCEPT
{
return this->kind ();
}
template <typename Base>
bool
parser::basic_symbol<Base>::empty () const YY_NOEXCEPT
{
return this->kind () == symbol_kind::S_YYEMPTY;
}
template <typename Base>
void
parser::basic_symbol<Base>::move (basic_symbol& s)
{
super_type::move (s);
value = YY_MOVE (s.value);
}
// by_kind.
parser::by_kind::by_kind ()
: kind_ (symbol_kind::S_YYEMPTY)
{}
#if 201103L <= YY_CPLUSPLUS
parser::by_kind::by_kind (by_kind&& that)
: kind_ (that.kind_)
{
that.clear ();
}
#endif
parser::by_kind::by_kind (const by_kind& that)
: kind_ (that.kind_)
{}
parser::by_kind::by_kind (token_kind_type t)
: kind_ (yytranslate_ (t))
{}
void
parser::by_kind::clear ()
{
kind_ = symbol_kind::S_YYEMPTY;
}
void
parser::by_kind::move (by_kind& that)
{
kind_ = that.kind_;
that.clear ();
}
parser::symbol_kind_type
parser::by_kind::kind () const YY_NOEXCEPT
{
return kind_;
}
parser::symbol_kind_type
parser::by_kind::type_get () const YY_NOEXCEPT
{
return this->kind ();
}
// by_state.
parser::by_state::by_state () YY_NOEXCEPT
: state (empty_state)
{}
parser::by_state::by_state (const by_state& that) YY_NOEXCEPT
: state (that.state)
{}
void
parser::by_state::clear () YY_NOEXCEPT
{
state = empty_state;
}
void
parser::by_state::move (by_state& that)
{
state = that.state;
that.clear ();
}
parser::by_state::by_state (state_type s) YY_NOEXCEPT
: state (s)
{}
parser::symbol_kind_type
parser::by_state::kind () const YY_NOEXCEPT
{
if (state == empty_state)
return symbol_kind::S_YYEMPTY;
else
return YY_CAST (symbol_kind_type, yystos_[+state]);
}
parser::stack_symbol_type::stack_symbol_type ()
{}
parser::stack_symbol_type::stack_symbol_type (YY_RVREF (stack_symbol_type) that)
: super_type (YY_MOVE (that.state), YY_MOVE (that.value))
{
#if 201103L <= YY_CPLUSPLUS
// that is emptied.
that.state = empty_state;
#endif
}
parser::stack_symbol_type::stack_symbol_type (state_type s, YY_MOVE_REF (symbol_type) that)
: super_type (s, YY_MOVE (that.value))
{
// that is emptied.
that.kind_ = symbol_kind::S_YYEMPTY;
}
#if YY_CPLUSPLUS < 201103L
parser::stack_symbol_type&
parser::stack_symbol_type::operator= (const stack_symbol_type& that)
{
state = that.state;
value = that.value;
return *this;
}
parser::stack_symbol_type&
parser::stack_symbol_type::operator= (stack_symbol_type& that)
{
state = that.state;
value = that.value;
// that is emptied.
that.state = empty_state;
return *this;
}
#endif
template <typename Base>
void
parser::yy_destroy_ (const char* yymsg, basic_symbol<Base>& yysym) const
{
if (yymsg)
YY_SYMBOL_PRINT (yymsg, yysym);
// User destructor.
YYUSE (yysym.kind ());
}
#if YYDEBUG
template <typename Base>
void
parser::yy_print_ (std::ostream& yyo, const basic_symbol<Base>& yysym) const
{
std::ostream& yyoutput = yyo;
YYUSE (yyoutput);
if (yysym.empty ())
yyo << "empty symbol";
else
{
symbol_kind_type yykind = yysym.kind ();
yyo << (yykind < YYNTOKENS ? "token" : "nterm")
<< ' ' << yysym.name () << " (";
YYUSE (yykind);
yyo << ')';
}
}
#endif
void
parser::yypush_ (const char* m, YY_MOVE_REF (stack_symbol_type) sym)
{
if (m)
YY_SYMBOL_PRINT (m, sym);
yystack_.push (YY_MOVE (sym));
}
void
parser::yypush_ (const char* m, state_type s, YY_MOVE_REF (symbol_type) sym)
{
#if 201103L <= YY_CPLUSPLUS
yypush_ (m, stack_symbol_type (s, std::move (sym)));
#else
stack_symbol_type ss (s, sym);
yypush_ (m, ss);
#endif
}
void
parser::yypop_ (int n)
{
yystack_.pop (n);
}
#if YYDEBUG
std::ostream&
parser::debug_stream () const
{
return *yycdebug_;
}
void
parser::set_debug_stream (std::ostream& o)
{
yycdebug_ = &o;
}
parser::debug_level_type
parser::debug_level () const
{
return yydebug_;
}
void
parser::set_debug_level (debug_level_type l)
{
yydebug_ = l;
}
#endif // YYDEBUG
parser::state_type
parser::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];
}
bool
parser::yy_pact_value_is_default_ (int yyvalue)
{
return yyvalue == yypact_ninf_;
}
bool
parser::yy_table_value_is_error_ (int yyvalue)
{
return yyvalue == yytable_ninf_;
}
int
parser::operator() ()
{
return parse ();
}
int
parser::parse ()
{
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 return value of parse ().
int yyresult;
#if YY_EXCEPTIONS
try
#endif // YY_EXCEPTIONS
{
YYCDEBUG << "Starting parse\n";
/* 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, YY_MOVE (yyla));
/*-----------------------------------------------.
| yynewstate -- push a new symbol on the stack. |
`-----------------------------------------------*/
yynewstate:
YYCDEBUG << "Entering state " << int (yystack_[0].state) << '\n';
YY_STACK_PRINT ();
// Accept?
if (yystack_[0].state == yyfinal_)
YYACCEPT;
goto yybackup;
/*-----------.
| yybackup. |
`-----------*/
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\n";
#if YY_EXCEPTIONS
try
#endif // YY_EXCEPTIONS
{
yyla.kind_ = yytranslate_ (yylex (&yyla.value));
}
#if YY_EXCEPTIONS
catch (const syntax_error& yyexc)
{
YYCDEBUG << "Caught exception: " << yyexc.what() << '\n';
error (yyexc);
goto yyerrlab1;
}
#endif // YY_EXCEPTIONS
}
YY_SYMBOL_PRINT ("Next token is", yyla);
if (yyla.kind () == symbol_kind::S_YYerror)
{
// The scanner already issued an error message, process directly
// to error recovery. But do not keep the error token as
// lookahead, it is too special and may lead us to an endless
// loop in error recovery. */
yyla.kind_ = symbol_kind::S_YYUNDEF;
goto yyerrlab1;
}
/* If the proper action on seeing token YYLA.TYPE is to reduce or
to detect an error, take that action. */
yyn += yyla.kind ();
if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.kind ())
{
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", state_type (yyn), YY_MOVE (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]);
/* 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;
// Perform the reduction.
YY_REDUCE_PRINT (yyn);
#if YY_EXCEPTIONS
try
#endif // YY_EXCEPTIONS
{
switch (yyn)
{
case 2: // program: structure
#line 128 "parser.y"
{
printf("%s", (yystack_[0].value.string));
}
#line 592 "parser.cpp"
break;
case 3: // structure: heading data_part exe_part
#line 133 "parser.y"
{
(yylhs.value.string) = (yystack_[2].value.string);
(yylhs.value.string) += (yystack_[1].value.string);
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 602 "parser.cpp"
break;
case 4: // structure: %empty
#line 138 "parser.y"
{
(yylhs.value.string) += "// empty program\n";
}
#line 610 "parser.cpp"
break;
case 5: // heading: PROGRAM ID COLON
#line 143 "parser.y"
{
(yylhs.value.string) += "// Program ";
(yylhs.value.string) += (yystack_[1].value.string);
(yylhs.value.string) += "\n";
}
#line 620 "parser.cpp"
break;
case 6: // data_part: DATA DIVISION COMMANDEND data_body END COMMANDEND
#line 150 "parser.y"
{
(yylhs.value.string) = (yystack_[2].value.string);
}
#line 628 "parser.cpp"
break;
case 7: // data_body: data_stmt
#line 155 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 636 "parser.cpp"
break;
case 8: // data_body: data_stmt data_body
#line 158 "parser.y"
{
(yylhs.value.string) = (yystack_[1].value.string);
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 645 "parser.cpp"
break;
case 9: // data_stmt: id_list COLON type COMMANDEND
#line 164 "parser.y"
{
(yylhs.value.string) = (yystack_[1].value.string);
(yylhs.value.string) += " ";
(yylhs.value.string) += (yystack_[3].value.string);
(yylhs.value.string) += ";\n";
}
#line 656 "parser.cpp"
break;
case 10: // id_list: ID
#line 172 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 664 "parser.cpp"
break;
case 11: // id_list: ID SEMICOLON id_list
#line 175 "parser.y"
{
(yylhs.value.string) = (yystack_[2].value.string);
(yylhs.value.string) += ",";
(yylhs.value.string) += (yystack_[1].value.string);
}
#line 674 "parser.cpp"
break;
case 12: // type: INTEGER
#line 182 "parser.y"
{
(yylhs.value.string) += "int";
}
#line 682 "parser.cpp"
break;
case 13: // type: FLOAT
#line 185 "parser.y"
{
(yylhs.value.string) += "float";
}
#line 690 "parser.cpp"
break;
case 14: // type: CHAR
#line 188 "parser.y"
{
(yylhs.value.string) += "char";
}
#line 698 "parser.cpp"
break;
case 15: // exe_part: PROCEDURE DIVISION COMMANDEND stmt_list_or_no END COMMANDEND
#line 193 "parser.y"
{
(yylhs.value.string) += "#include <stdio.h>\n\nint main(\n{\n";
(yylhs.value.string) += (yystack_[2].value.string);
(yylhs.value.string) += "return 0;\n}\n";
}
#line 708 "parser.cpp"
break;
case 16: // stmt_list_or_no: stmt_list
#line 200 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 716 "parser.cpp"
break;
case 17: // stmt_list_or_no: %empty
#line 203 "parser.y"
{
(yylhs.value.string) += "// empty stmts\n";
}
#line 724 "parser.cpp"
break;
case 18: // stmt_list: stmt
#line 208 "parser.y"
{ (yylhs.value.string) = (yystack_[0].value.string); }
#line 730 "parser.cpp"
break;
case 19: // stmt_list: stmt stmt_list
#line 209 "parser.y"
{
(yylhs.value.string) = (yystack_[1].value.string);
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 739 "parser.cpp"
break;
case 20: // stmt: assgn_stmt
#line 215 "parser.y"
{ (yylhs.value.string) = (yystack_[0].value.string); }
#line 745 "parser.cpp"
break;
case 21: // stmt: in_stmt
#line 216 "parser.y"
{ (yylhs.value.string) = (yystack_[0].value.string); }
#line 751 "parser.cpp"
break;
case 22: // stmt: out_stmt
#line 217 "parser.y"
{ (yylhs.value.string) = (yystack_[0].value.string); }
#line 757 "parser.cpp"
break;
case 23: // stmt: loop_stmt
#line 218 "parser.y"
{ (yylhs.value.string) = (yystack_[0].value.string); }
#line 763 "parser.cpp"
break;
case 24: // stmt: cond1_stmt
#line 219 "parser.y"
{ (yylhs.value.string) = (yystack_[0].value.string); }
#line 769 "parser.cpp"
break;
case 25: // assgn_stmt: SET ID TO math_exp COMMANDEND
#line 222 "parser.y"
{
(yylhs.value.string) = (yystack_[3].value.string);
(yylhs.value.string) += " = ";
(yylhs.value.string) += (yystack_[1].value.string);
(yylhs.value.string) += ";\n";
}
#line 780 "parser.cpp"
break;
case 26: // in_stmt: GET in_list COMMANDEND
#line 237 "parser.y"
{
}
#line 787 "parser.cpp"
break;
case 27: // in_list: ID
#line 241 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 795 "parser.cpp"
break;
case 28: // in_list: ID SEMICOLON in_list
#line 244 "parser.y"
{
// sprintf($$, "%s%s", $1, $2);
}
#line 803 "parser.cpp"
break;
case 29: // out_stmt: PUT out_list COMMANDEND
#line 249 "parser.y"
{
}
#line 810 "parser.cpp"
break;
case 30: // out_list: ID SEMICOLON out_list
#line 253 "parser.y"
{ (yylhs.value.string) = (yystack_[2].value.string); }
#line 816 "parser.cpp"
break;
case 31: // out_list: ID
#line 253 "parser.y"
{
}
#line 823 "parser.cpp"
break;
case 32: // loop_stmt: REPEAT SECTION_OPEN stmt_list_or_no SECTION_CLOSE condition COMMANDEND
#line 257 "parser.y"
{
}
#line 830 "parser.cpp"
break;
case 33: // condition: EITHER logical_exp OR logical_exp
#line 261 "parser.y"
{
(yylhs.value.string) += "eit ";
(yylhs.value.string) += (yystack_[2].value.string);
(yylhs.value.string) += " OR ";
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 841 "parser.cpp"
break;
case 34: // condition: NEITHER logical_exp NOR logical_exp
#line 267 "parser.y"
{
(yylhs.value.string) += "eit ";
(yylhs.value.string) += (yystack_[2].value.string);
(yylhs.value.string) += " NOR ";
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 852 "parser.cpp"
break;
case 35: // condition: BOTH logical_exp AND logical_exp
#line 273 "parser.y"
{
(yylhs.value.string) += "eit ";
(yylhs.value.string) += (yystack_[2].value.string);
(yylhs.value.string) += " AND ";
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 863 "parser.cpp"
break;
case 36: // cond1_stmt: EXECUTE SECTION_OPEN stmt_list_or_no SECTION_CLOSE condition COMMANDEND
#line 281 "parser.y"
{
}
#line 871 "parser.cpp"
break;
case 37: // logical_exp: logical_exp OR elem1
#line 286 "parser.y"
{
(yylhs.value.string) = (yystack_[2].value.string);
(yylhs.value.string) += " OR ";
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 881 "parser.cpp"
break;
case 38: // logical_exp: elem1
#line 291 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 889 "parser.cpp"
break;
case 39: // elem1: elem1 AND elem2
#line 296 "parser.y"
{
(yylhs.value.string) = (yystack_[2].value.string);
(yylhs.value.string) += " AND ";
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 899 "parser.cpp"
break;
case 40: // elem1: elem2
#line 301 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 907 "parser.cpp"
break;
case 41: // elem2: NOT elem2
#line 306 "parser.y"
{
(yylhs.value.string) += "NOT ";
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 916 "parser.cpp"
break;
case 42: // elem2: elem3
#line 310 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 924 "parser.cpp"
break;
case 43: // elem3: LEFTPAREN logical_exp RIGHTPAREN
#line 315 "parser.y"
{
(yylhs.value.string) += "( ";
(yylhs.value.string) += (yystack_[1].value.string);
(yylhs.value.string) += " )";
}
#line 934 "parser.cpp"
break;
case 44: // elem3: rel_exp
#line 320 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 942 "parser.cpp"
break;
case 45: // rel_exp: t1 rel_op t1
#line 326 "parser.y"
{
(yylhs.value.string) = (yystack_[2].value.string);
(yylhs.value.string) += " ";
(yylhs.value.string) += (yystack_[1].value.string);
(yylhs.value.string) += " ";
(yylhs.value.string) += (yystack_[0].value.string);
}
#line 954 "parser.cpp"
break;
case 46: // t1: math_exp
#line 335 "parser.y"
{
(yylhs.value.string) = (yystack_[0].value.string);
}
#line 962 "parser.cpp"
break;
case 47: // rel_op: LT
#line 340 "parser.y"
{
(yylhs.value.string) += "LT";
}
#line 970 "parser.cpp"
break;
case 48: // rel_op: LE
#line 343 "parser.y"
{
(yylhs.value.string) += "LE";
}
#line 978 "parser.cpp"
break;
case 49: // rel_op: GT
#line 346 "parser.y"
{
(yylhs.value.string) += "GT";
}
#line 986 "parser.cpp"
break;
case 50: // rel_op: GE
#line 349 "parser.y"
{
(yylhs.value.string) += "GE";
}
#line 994 "parser.cpp"
break;
case 51: // rel_op: NE
#line 352 "parser.y"
{
(yylhs.value.string) += "NE";
}