# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
-## ---------------- ##
-## Default values. ##
-## ---------------- ##
-
-# Default parser class name.
-m4_define_default([b4_parser_class_name], [parser])
-
-
-
-## ----------------- ##
-## Semantic Values. ##
-## ----------------- ##
-
-
-# b4_lhs_value([TYPE])
-# --------------------
-# Expansion of $<TYPE>$.
-m4_define([b4_lhs_value],
-[(yyval[]m4_ifval([$1], [.$1]))])
-
-
-# b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
-# --------------------------------------
-# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
-# symbols on RHS.
-m4_define([b4_rhs_value],
-[(yysemantic_stack_@{m4_eval([$1 - $2])@}m4_ifval([$3], [.$3]))])
-
-m4_define_default([b4_location_type], [location])
-m4_define_default([b4_filename_type], [std::string])
-
-# b4_lhs_location()
-# -----------------
-# Expansion of @$.
-m4_define([b4_lhs_location],
-[(yyloc)])
-
-
-# b4_rhs_location(RULE-LENGTH, NUM)
-# ---------------------------------
-# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
-# on RHS.
-m4_define([b4_rhs_location],
-[(yylocation_stack_@{m4_eval([$1 - $2])@})])
-
-
-# b4_parse_param_decl
-# -------------------
-# Extra formal arguments of the constructor.
-# Change the parameter names from "foo" into "foo_yyarg", so that
-# there is no collision bw the user chosen attribute name, and the
-# argument name in the constructor.
-m4_define([b4_parse_param_decl],
-[m4_ifset([b4_parse_param],
- [m4_map_sep([b4_parse_param_decl_1], [, ], [b4_parse_param])])])
-
-m4_define([b4_parse_param_decl_1],
-[$1_yyarg])
-
-
-
-# b4_parse_param_cons
-# -------------------
-# Extra initialisations of the constructor.
-m4_define([b4_parse_param_cons],
- [m4_ifset([b4_parse_param],
- [,
- b4_cc_constructor_calls(b4_parse_param)])])
-m4_define([b4_cc_constructor_calls],
- [m4_map_sep([b4_cc_constructor_call], [,
- ], [$@])])
-m4_define([b4_cc_constructor_call],
- [$2 ($2_yyarg)])
-
-# b4_parse_param_vars
-# -------------------
-# Extra instance variables.
-m4_define([b4_parse_param_vars],
- [m4_ifset([b4_parse_param],
- [
- /* User arguments. */
-b4_cc_var_decls(b4_parse_param)])])
-m4_define([b4_cc_var_decls],
- [m4_map_sep([b4_cc_var_decl], [
-], [$@])])
-m4_define([b4_cc_var_decl],
- [ $1;])
-
-
+m4_include(b4_pkgdatadir/[c++.m4])
# We do want M4 expansion after # for CPP macros.
m4_changecom()
class location;
}
-]b4_token_defines(b4_tokens)[
+]b4_token_enums(b4_tokens)[
/* Copy the first part of user declarations. */
]b4_pre_prologue[
# define YYDEBUG ]b4_debug[
#endif
-/* Enabling verbose error message. */
-#ifndef YYERROR_VERBOSE
+/* Enabling verbose error messages. */
+#ifdef YYERROR_VERBOSE
+# undef YYERROR_VERBOSE
+# define YYERROR_VERBOSE 1
+#else
# define YYERROR_VERBOSE ]b4_error_verbose[
#endif
+#if YYERROR_VERBOSE
+# define YYERROR_VERBOSE_IF(x) x
+#else
+# define YYERROR_VERBOSE_IF(x) /* empty */
+#endif
+
+/* Enabling the token table. */
+#ifndef YYTOKEN_TABLE
+# define YYTOKEN_TABLE ]b4_token_table[
+#endif
+
#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
]m4_ifdef([b4_stype],
-[b4_syncline([b4_stype_line], [b4_filename])
+[b4_syncline([b4_stype_line], [b4_file_name])
union YYSTYPE b4_stype;
/* Line __line__ of lalr1.cc. */
b4_syncline([@oline@], [@ofile@])],
namespace yy
{
- class ]b4_parser_class_name[;
-
- template <typename P>
- struct traits
- {
- };
-
- template <>
- struct traits<]b4_parser_class_name[>
- {
- typedef ]b4_int_type_for([b4_translate])[ token_number_type;
- typedef ]b4_int_type_for([b4_rhs])[ rhs_number_type;
- typedef int state_type;
- typedef YYSTYPE semantic_type;
- typedef ]b4_location_type[ location_type;
- };
-}
-namespace yy
-{
/// A Bison parser.
class ]b4_parser_class_name[
{
/// Symbol semantic values.
- typedef traits<]b4_parser_class_name[>::semantic_type semantic_type;
+ typedef YYSTYPE semantic_type;
/// Symbol locations.
- typedef traits<]b4_parser_class_name[>::location_type location_type;
+ typedef ]b4_location_type[ location_type;
public:
/// Build a parser object.
void set_debug_level (debug_level_type l);
private:
-
- /// Call the scanner.
- virtual void yylex_ ();
-
/// Report a syntax error.
/// \param loc where the syntax error is found.
/// \param msg a description of the syntax error.
virtual void error (const location_type& loc, const std::string& msg);
- /// Generate an error message, and invoke error.
- virtual void yyreport_syntax_error_ ();
+ /// Generate an error message.
+ /// \param tok the look-ahead token.
+ virtual std::string yysyntax_error_ (YYERROR_VERBOSE_IF (int tok));
#if YYDEBUG
/// \brief Report a symbol on the debug stream.
/// State numbers.
- typedef traits<]b4_parser_class_name[>::state_type state_type;
+ typedef int state_type;
/// State stack type.
typedef stack<state_type> state_stack_type;
/// Semantic value stack type.
location_stack_type yylocation_stack_;
/// Internal symbol numbers.
- typedef traits<]b4_parser_class_name[>::token_number_type token_number_type;
+ typedef ]b4_int_type_for([b4_translate])[ token_number_type;
/* Tables. */
/// For a state, the index in \a yytable_ of its portion.
static const ]b4_int_type_for([b4_pact])[ yypact_[];
/// For a rule, its RHS length.
static const ]b4_int_type_for([b4_r2])[ yyr2_[];
-#if YYDEBUG || YYERROR_VERBOSE
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
/// For a symbol, its name in clear.
- static const char* const yyname_[];
+ static const char* const yytname_[];
+#endif
+
+#if YYERROR_VERBOSE
+ /// Convert the symbol name \a n to a form suitable for a diagnostic.
+ virtual std::string yytnamerr_ (const char *n);
#endif
#if YYDEBUG
/// A type to store symbol numbers and -1.
- typedef traits<]b4_parser_class_name[>::rhs_number_type rhs_number_type;
+ typedef ]b4_int_type_for([b4_rhs])[ rhs_number_type;
/// A `-1'-separated list of the rules' RHS.
static const rhs_number_type yyrhs_[];
/// For each rule, the index of the first RHS symbol in \a yyrhs_.
int yydebug_;
std::ostream* yycdebug_;
- /* Look-ahead and look-ahead in internal form. */
- int yylooka_;
- int yyilooka_;
-
- /// Semantic value of the look-ahead.
- semantic_type yylval;
- /// Location of the look-ahead.
- location_type yylloc;
- /// The locations where the error started and ended.
- location yyerror_range_[2];
-
- /// $$.
- semantic_type yyval;
- /// @@$.
- location_type yyloc;
]b4_parse_param_vars[
};
}
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrorlab
+#if YYERROR_VERBOSE
+
+/* Return YYSTR after stripping away unnecessary quotes and
+ backslashes, so that it's suitable for yyerror. The heuristic is
+ that double-quoting is unnecessary unless the string contains an
+ apostrophe, a comma, or backslash (other than backslash-backslash).
+ YYSTR is taken from yytname. */
+std::string
+yy::]b4_parser_class_name[::yytnamerr_ (const char *yystr)
+{
+ if (*yystr == '"')
+ {
+ std::string yyr = "";
+ char const *yyp = yystr;
+
+ for (;;)
+ switch (*++yyp)
+ {
+ case '\'':
+ case ',':
+ goto do_not_strip_quotes;
+
+ case '\\':
+ if (*++yyp != '\\')
+ goto do_not_strip_quotes;
+ /* Fall through. */
+ default:
+ yyr += *yyp;
+ break;
+
+ case '"':
+ return yyr;
+ }
+ do_not_strip_quotes: ;
+ }
+
+ return yystr;
+}
+
+#endif
+
#if YYDEBUG
/*--------------------------------.
| Print this symbol on YYOUTPUT. |
(void) cdebug_;
*yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
- << ' ' << yyname_[yytype] << " ("
+ << ' ' << yytname_[yytype] << " ("
<< *yylocationp << ": ";
switch (yytype)
{
int
yy::]b4_parser_class_name[::parse ()
{
+ /// Look-ahead and look-ahead in internal form.
+ int yychar;
+ int yytoken;
+
+ /// Semantic value of the look-ahead.
+ semantic_type yylval;
+ /// Location of the look-ahead.
+ location_type yylloc;
+ /// The locations where the error started and ended.
+ location yyerror_range[2];
+
+ /// $$.
+ semantic_type yyval;
+ /// @@$.
+ location_type yyloc;
+
int yyresult_;
YYCDEBUG << "Starting parse" << std::endl;
/* Start. */
yystate_ = 0;
- yylooka_ = yyempty_;
+ yychar = yyempty_;
]m4_ifdef([b4_initial_action], [
m4_pushdef([b4_at_dollar], [yylloc])dnl
goto yydefault;
/* Read a look-ahead token. */
- if (yylooka_ == yyempty_)
- yylex_ ();
+ if (yychar == yyempty_)
+ {
+ YYCDEBUG << "Reading a token: ";
+ yychar = ]b4_c_function_call([yylex], [int],
+[[YYSTYPE*], [&yylval]][]dnl
+b4_location_if([, [[location*], [&yylloc]]])dnl
+m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
+ }
+
/* Convert token to internal form. */
- if (yylooka_ <= yyeof_)
+ if (yychar <= yyeof_)
{
- yylooka_ = yyilooka_ = yyeof_;
+ yychar = yytoken = yyeof_;
YYCDEBUG << "Now at end of input." << std::endl;
}
else
{
- yyilooka_ = yytranslate_ (yylooka_);
- YY_SYMBOL_PRINT ("Next token is", yyilooka_, &yylval, &yylloc);
+ yytoken = yytranslate_ (yychar);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
}
/* If the proper action on seeing token ILOOKA_ is to reduce or to
detect an error, take that action. */
- yyn_ += yyilooka_;
- if (yyn_ < 0 || yylast_ < yyn_ || yycheck_[yyn_] != yyilooka_)
+ yyn_ += yytoken;
+ if (yyn_ < 0 || yylast_ < yyn_ || yycheck_[yyn_] != yytoken)
goto yydefault;
/* Reduce or error. */
goto yyacceptlab;
/* Shift the look-ahead token. */
- YY_SYMBOL_PRINT ("Shifting", yyilooka_, &yylval, &yylloc);
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
/* Discard the token being shifted unless it is eof. */
- if (yylooka_ != yyeof_)
- yylooka_ = yyempty_;
+ if (yychar != yyeof_)
+ yychar = yyempty_;
yysemantic_stack_.push (yylval);
yylocation_stack_.push (yylloc);
`------------------------------------*/
yyerrlab:
/* If not already recovering from an error, report this error. */
- yyreport_syntax_error_ ();
+ if (!yyerrstatus_)
+ {
+ ++yynerrs_;
+ error (yylloc, yysyntax_error_ (YYERROR_VERBOSE_IF (yytoken)));
+ }
- yyerror_range_[0] = yylloc;
+ yyerror_range[0] = yylloc;
if (yyerrstatus_ == 3)
{
/* If just tried and failed to reuse look-ahead token after an
error, discard it. */
- /* Return failure if at end of input. */
- if (yylooka_ <= yyeof_)
+ if (yychar <= yyeof_)
{
- /* If at end of input, pop the error token,
- then the rest of the stack, then return failure. */
- if (yylooka_ == yyeof_)
- for (;;)
- {
- yyerror_range_[0] = yylocation_stack_[0];
- yypop_ ();
- if (yystate_stack_.height () == 1)
- YYABORT;
- yydestruct_ ("Error: popping",
- yystos_[yystate_stack_[0]],
- &yysemantic_stack_[0],
- &yylocation_stack_[0]);
- }
+ /* Return failure if at end of input. */
+ if (yychar == yyeof_)
+ YYABORT;
}
else
{
- yydestruct_ ("Error: discarding", yyilooka_, &yylval, &yylloc);
- yylooka_ = yyempty_;
+ yydestruct_ ("Error: discarding", yytoken, &yylval, &yylloc);
+ yychar = yyempty_;
}
}
YYERROR and the label yyerrorlab therefore never appears in user
code. */
if (false)
- goto yyerrorlab;
+ goto yyerrorlab;
- yyerror_range_[0] = yylocation_stack_[yylen_ - 1];
+ yyerror_range[0] = yylocation_stack_[yylen_ - 1];
yypop_ (yylen_);
yystate_ = yystate_stack_[0];
goto yyerrlab1;
if (yystate_stack_.height () == 1)
YYABORT;
- yyerror_range_[0] = yylocation_stack_[0];
+ yyerror_range[0] = yylocation_stack_[0];
yydestruct_ ("Error: popping",
yystos_[yystate_],
&yysemantic_stack_[0], &yylocation_stack_[0]);
if (yyn_ == yyfinal_)
goto yyacceptlab;
- yyerror_range_[1] = yylloc;
+ yyerror_range[1] = yylloc;
// Using YYLLOC is tempting, but would change the location of
// the look-ahead. YYLOC is available though.
- YYLLOC_DEFAULT (yyloc, yyerror_range_ - 1, 2);
+ YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2);
yysemantic_stack_.push (yylval);
yylocation_stack_.push (yyloc);
goto yyreturn;
yyreturn:
- if (yylooka_ != yyeof_ && yylooka_ != yyempty_)
- yydestruct_ ("Error: discarding lookahead", yyilooka_, &yylval, &yylloc);
- return yyresult_;
-}
+ if (yychar != yyeof_ && yychar != yyempty_)
+ yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
-void
-yy::]b4_parser_class_name[::yylex_ ()
-{
- YYCDEBUG << "Reading a token: ";
- yylooka_ = ]b4_c_function_call([yylex], [int],
-[[YYSTYPE*], [&yylval]][]dnl
-b4_location_if([, [[location*], [&yylloc]]])dnl
-m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
+ while (yystate_stack_.height () != 1)
+ {
+ yydestruct_ ("Cleanup: popping",
+ yystos_[yystate_stack_[0]],
+ &yysemantic_stack_[0],
+ &yylocation_stack_[0]);
+ yypop_ ();
+ }
+
+ return yyresult_;
}
-// Generate an error message, and invoke error.
-void
-yy::]b4_parser_class_name[::yyreport_syntax_error_ ()
+// Generate an error message.
+std::string
+yy::]b4_parser_class_name[::yysyntax_error_ (YYERROR_VERBOSE_IF (int tok))
{
- /* If not already recovering from an error, report this error. */
- if (!yyerrstatus_)
- {
- ++yynerrs_;
- std::string message;
+ std::string res;
#if YYERROR_VERBOSE
- yyn_ = yypact_[yystate_];
- if (yypact_ninf_ < yyn_ && yyn_ < yylast_)
- {
- /* Start YYX at -YYN if negative to avoid negative indexes in
- YYCHECK. */
- int yyxbegin = yyn_ < 0 ? -yyn_ : 0;
-
- /* Stay within bounds of both yycheck and yytname. */
- int yychecklim = yylast_ - yyn_;
- int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
- int count = 0;
+ yyn_ = yypact_[yystate_];
+ if (yypact_ninf_ < yyn_ && yyn_ < yylast_)
+ {
+ /* Start YYX at -YYN if negative to avoid negative indexes in
+ YYCHECK. */
+ int yyxbegin = yyn_ < 0 ? -yyn_ : 0;
+
+ /* Stay within bounds of both yycheck and yytname. */
+ int yychecklim = yylast_ - yyn_;
+ int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+ int count = 0;
+ for (int x = yyxbegin; x < yyxend; ++x)
+ if (yycheck_[x + yyn_] == x && x != yyterror_)
+ ++count;
+
+ // FIXME: This method of building the message is not compatible
+ // with internationalization. It should work like yacc.c does it.
+ // That is, first build a string that looks like this:
+ // "syntax error, unexpected %s or %s or %s"
+ // Then, invoke YY_ on this string.
+ // Finally, use the string as a format to output
+ // yytname_[tok], etc.
+ // Until this gets fixed, this message appears in English only.
+ res = "syntax error, unexpected ";
+ res += yytnamerr_ (yytname_[tok]);
+ if (count < 5)
+ {
+ count = 0;
for (int x = yyxbegin; x < yyxend; ++x)
if (yycheck_[x + yyn_] == x && x != yyterror_)
- ++count;
-
- // FIXME: This method of building the message is not compatible
- // with internationalization. It should work like yacc.c does it.
- // That is, first build a string that looks like this:
- // "syntax error, unexpected %s or %s or %s"
- // Then, invoke YY_ on this string.
- // Finally, use the string as a format to output
- // yyname_[yyilooka_], etc.
- // Until this gets fixed, this message appears in English only.
- message = "syntax error, unexpected ";
- message += yyname_[yyilooka_];
- if (count < 5)
- {
- count = 0;
- for (int x = yyxbegin; x < yyxend; ++x)
- if (yycheck_[x + yyn_] == x && x != yyterror_)
- {
- message += (!count++) ? ", expecting " : " or ";
- message += yyname_[x];
- }
- }
- }
- else
-#endif
- message = YY_("syntax error");
- error (yylloc, message);
+ {
+ res += (!count++) ? ", expecting " : " or ";
+ res += yytnamerr_ (yytname_[x]);
+ }
+ }
}
+ else
+#endif
+ res = YY_("syntax error");
+ return res;
}
]b4_r2[
};
-#if YYDEBUG || YYERROR_VERBOSE
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
First, the terminals, then, starting at \a yyntokens_, nonterminals. */
const char*
-const yy::]b4_parser_class_name[::yyname_[] =
+const yy::]b4_parser_class_name[::yytname_[] =
{
]b4_tname[
};
<< " (line " << yylno << "), ";
for (]b4_int_type_for([b4_prhs])[ i = yyprhs_[yyn_];
0 <= yyrhs_[i]; ++i)
- *yycdebug_ << yyname_[yyrhs_[i]] << ' ';
- *yycdebug_ << "-> " << yyname_[yyr1_[yyn_]] << std::endl;
+ *yycdebug_ << yytname_[yyrhs_[i]] << ' ';
+ *yycdebug_ << "-> " << yytname_[yyr1_[yyn_]] << std::endl;
}
#endif // YYDEBUG
projects / bison.git / blobdiff