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java.m4

-*- Autoconf -*-

# Java language support for Bison

# 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/>.

m4_include(b4_skeletonsdir/[c-like.m4])

# b4_list2(LIST1, LIST2)
# ----------------------
# Join two lists with a comma if necessary.
m4_define([b4_list2],
          [$1[]m4_ifval(m4_quote($1), [m4_ifval(m4_quote($2), [[, ]])])[]$2])

# b4_percent_define_get3(DEF, PRE, POST, NOT)
# -------------------------------------------
# Expand to the value of DEF surrounded by PRE and POST if it's %define'ed,
# otherwise NOT.
m4_define([b4_percent_define_get3],
          [m4_ifval(m4_quote(b4_percent_define_get([$1])),
                [$2[]b4_percent_define_get([$1])[]$3], [$4])])

# b4_flag_value(BOOLEAN-FLAG)
# ---------------------------
m4_define([b4_flag_value], [b4_flag_if([$1], [true], [false])])

# b4_parser_class_declaration
# ---------------------------
# The declaration of the parser class ("class YYParser"), with all its
# qualifiers/annotations.
b4_percent_define_default([[api.parser.abstract]], [[false]])
b4_percent_define_default([[api.parser.final]],    [[false]])
b4_percent_define_default([[api.parser.public]],   [[false]])
b4_percent_define_default([[api.parser.strictfp]], [[false]])

m4_define([b4_parser_class_declaration],
[b4_percent_define_get3([api.parser.annotations], [], [ ])dnl
b4_percent_define_flag_if([api.parser.public],   [public ])dnl
b4_percent_define_flag_if([api.parser.abstract], [abstract ])dnl
b4_percent_define_flag_if([api.parser.final],    [final ])dnl
b4_percent_define_flag_if([api.parser.strictfp], [strictfp ])dnl
[class ]b4_parser_class[]dnl
b4_percent_define_get3([api.parser.extends], [ extends ])dnl
b4_percent_define_get3([api.parser.implements], [ implements ])])

# b4_lexer_if(TRUE, FALSE)
# ------------------------
m4_define([b4_lexer_if],
[b4_percent_code_ifdef([[lexer]], [$1], [$2])])

# b4_identification
# -----------------
m4_define([b4_identification],
[[  /** Version number for the Bison executable that generated this parser.  */
  public static final String bisonVersion = "]b4_version_string[";

/** Name of the skeleton that generated this parser.  */
  public static final String bisonSkeleton = ]b4_skeleton[;
]])

## ------------ ##
## Data types.  ##
## ------------ ##

# b4_int_type(MIN, MAX)
# ---------------------
# Return the smallest int type able to handle numbers ranging from
# MIN to MAX (included).
m4_define([b4_int_type],
[m4_if(b4_ints_in($@,   [-128],   [127]), [1], [byte],
       b4_ints_in($@, [-32768], [32767]), [1], [short],
                                               [int])])

# b4_int_type_for(NAME)
# ---------------------
# Return the smallest int type able to handle numbers ranging from
# 'NAME_min' to 'NAME_max' (included).
m4_define([b4_int_type_for],
[b4_int_type($1_min, $1_max)])

# b4_null
# -------
m4_define([b4_null], [null])

# b4_typed_parser_table_define(TYPE, NAME, DATA, COMMENT)
# -------------------------------------------------------
# We use intermediate functions (e.g., yypact_init) to work around the
# 64KB limit for JVM methods.  See
# https://lists.gnu.org/r/help-bison/2008-11/msg00004.html.
m4_define([b4_typed_parser_table_define],
[m4_ifval([$4], [b4_comment([$4])
  ])dnl
[private static final ]$1[[] yy$2_ = yy$2_init();
  private static final ]$1[[] yy$2_init()
  {
    return new ]$1[[]
    {
  ]$3[
    };
  }]])

# b4_integral_parser_table_define(NAME, DATA, COMMENT)
#-----------------------------------------------------
m4_define([b4_integral_parser_table_define],
[b4_typed_parser_table_define([b4_int_type_for([$2])], [$1], [$2], [$3])])

## ------------- ##
## Token kinds.  ##
## ------------- ##

# b4_token_enum(TOKEN-NUM)
# ------------------------
# Output the definition of this token as an enum.
m4_define([b4_token_enum],
[b4_token_visible_if([$1],
    [m4_format([[    /** Token %s, to be returned by the scanner.  */
    static final int %s = %s%s;
]],
               b4_symbol([$1], [tag]),
               b4_symbol([$1], [id]),
               b4_symbol([$1], b4_api_token_raw_if([[number]], [[code]])))])])

# b4_token_enums
# --------------
# Output the definition of the tokens (if there are) as enums.
m4_define([b4_token_enums],
[b4_any_token_visible_if([    /* Token kinds.  */
b4_symbol_foreach([b4_token_enum])])])

## -------------- ##
## Symbol kinds.  ##
## -------------- ##

# b4_symbol_kind(NUM)
# -------------------
m4_define([b4_symbol_kind],
[SymbolKind.b4_symbol_kind_base($@)])

# b4_symbol_enum(SYMBOL-NUM)
# --------------------------
# Output the definition of this symbol as an enum.
m4_define([b4_symbol_enum],
[m4_format([    %-30s %s],
           m4_format([[%s(%s)%s]],
                     b4_symbol([$1], [kind_base]),
                     [$1],
                     m4_if([$1], b4_last_symbol, [[;]], [[,]])),
           [b4_symbol_tag_comment([$1])])])

# b4_declare_symbol_enum
# ----------------------
# The definition of the symbol internal numbers as an enum.
m4_define([b4_declare_symbol_enum],
[[  public enum SymbolKind
  {
]b4_symbol_foreach([b4_symbol_enum])[

private final int yycode_;

SymbolKind (int n) {
      this.yycode_ = n;
    }

private static final SymbolKind[] values_ = {
      ]m4_map_args_sep([b4_symbol_kind(], [)], [,
      ], b4_symbol_numbers)[
    };

static final SymbolKind get(int code) {
      return values_[code];
    }

public final int getCode() {
      return this.yycode_;
    }

]b4_parse_error_bmatch(
[simple\|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.  */
    private static String yytnamerr_(String yystr)
    {
      if (yystr.charAt (0) == '"')
        {
          StringBuffer yyr = new StringBuffer();
          strip_quotes: for (int i = 1; i < yystr.length(); i++)
            switch (yystr.charAt(i))
              {
              case '\'':
              case ',':
                break strip_quotes;

case '\\':
                if (yystr.charAt(++i) != '\\')
                  break strip_quotes;
                /* Fall through.  */
              default:
                yyr.append(yystr.charAt(i));
                break;

case '"':
                return yyr.toString();
              }
        }
      return yystr;
    }

/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
       First, the terminals, then, starting at \a YYNTOKENS_, nonterminals.  */
    ]b4_typed_parser_table_define([String], [tname], [b4_tname])[

/* The user-facing name of this symbol.  */
    public final String getName() {
      return yytnamerr_(yytname_[yycode_]);
    }
]],
[custom\|detailed],
[[    /* YYNAMES_[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
       First, the terminals, then, starting at \a YYNTOKENS_, nonterminals.  */
    ]b4_typed_parser_table_define([String], [names], [b4_symbol_names])[

/* The user-facing name of this symbol.  */
    public final String getName() {
      return yynames_[yycode_];
    }]])[
  };
]])])

# b4_case(ID, CODE, [COMMENTS])
# -----------------------------
# We need to fool Java's stupid unreachable code detection.
m4_define([b4_case],
[  case $1:m4_ifval([$3], [ b4_comment([$3])])
  if (yyn == $1)
    $2;
  break;
])

# b4_predicate_case(LABEL, CONDITIONS)
# ------------------------------------
m4_define([b4_predicate_case],
[  case $1:
     if (! ($2)) YYERROR;
    break;
])

## -------- ##
## Checks.  ##
## -------- ##

b4_percent_define_check_kind([[api.value.type]],    [code], [deprecated])

b4_percent_define_check_kind([[annotations]],       [code], [deprecated])
b4_percent_define_check_kind([[extends]],           [code], [deprecated])
b4_percent_define_check_kind([[implements]],        [code], [deprecated])
b4_percent_define_check_kind([[init_throws]],       [code], [deprecated])
b4_percent_define_check_kind([[lex_throws]],        [code], [deprecated])
b4_percent_define_check_kind([[api.parser.class]],  [code], [deprecated])
b4_percent_define_check_kind([[throws]],            [code], [deprecated])

## ---------------- ##
## Default values.  ##
## ---------------- ##

m4_define([b4_yystype], [b4_percent_define_get([[api.value.type]])])
b4_percent_define_default([[api.value.type]], [[Object]])
b4_percent_define_default([[api.symbol.prefix]], [[S_]])

# b4_api_prefix, b4_api_PREFIX
# ----------------------------
# Corresponds to %define api.prefix
b4_percent_define_default([[api.prefix]], [[YY]])
m4_define([b4_api_prefix],
[b4_percent_define_get([[api.prefix]])])
m4_define([b4_api_PREFIX],
[m4_toupper(b4_api_prefix)])

# b4_prefix
# ---------
# If the %name-prefix is not given, it is api.prefix.
m4_define_default([b4_prefix], [b4_api_prefix])

b4_percent_define_default([[api.parser.class]], [b4_prefix[]Parser])
m4_define([b4_parser_class], [b4_percent_define_get([[api.parser.class]])])

b4_percent_define_default([[lex_throws]], [[java.io.IOException]])
m4_define([b4_lex_throws], [b4_percent_define_get([[lex_throws]])])

b4_percent_define_default([[throws]], [])
m4_define([b4_throws], [b4_percent_define_get([[throws]])])

b4_percent_define_default([[init_throws]], [])
m4_define([b4_init_throws], [b4_percent_define_get([[init_throws]])])

b4_percent_define_default([[api.location.type]], [Location])
m4_define([b4_location_type], [b4_percent_define_get([[api.location.type]])])

b4_percent_define_default([[api.position.type]], [Position])
m4_define([b4_position_type], [b4_percent_define_get([[api.position.type]])])

## ----------------- ##
## Semantic Values.  ##
## ----------------- ##

# b4_symbol_translate(STRING)
# ---------------------------
# Used by "bison" in the array of symbol names to mark those that
# require translation.
m4_define([b4_symbol_translate],
[[i18n($1)]])

# b4_trans(STRING)
# ----------------
# Translate a string if i18n is enabled.  Avoid collision with b4_translate.
m4_define([b4_trans],
[b4_has_translations_if([i18n($1)], [$1])])

# b4_symbol_value(VAL, [SYMBOL-NUM], [TYPE-TAG])
# ----------------------------------------------
# See README.
m4_define([b4_symbol_value],
[m4_ifval([$3],
          [(($3)($1))],
          [m4_ifval([$2],
                    [b4_symbol_if([$2], [has_type],
                                  [((b4_symbol([$2], [type]))($1))],
                                  [$1])],
                    [$1])])])

# b4_lhs_value([SYMBOL-NUM], [TYPE])
# ----------------------------------
# See README.
m4_define([b4_lhs_value], [yyval])

# b4_rhs_data(RULE-LENGTH, POS)
# -----------------------------
# See README.
m4_define([b4_rhs_data],
[yystack.valueAt (b4_subtract($@))])

# b4_rhs_value(RULE-LENGTH, POS, SYMBOL-NUM, [TYPE])
# --------------------------------------------------
# See README.
#
# In this simple implementation, %token and %type have class names
# between the angle brackets.
m4_define([b4_rhs_value],
[b4_symbol_value([b4_rhs_data([$1], [$2])], [$3], [$4])])

# b4_lhs_location()
# -----------------
# Expansion of @$.
m4_define([b4_lhs_location],
[(yyloc)])

# b4_rhs_location(RULE-LENGTH, POS)
# ---------------------------------
# Expansion of @POS, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
[yystack.locationAt (b4_subtract($@))])

# b4_lex_param
# b4_parse_param
# --------------
# If defined, b4_lex_param arrives double quoted, but below we prefer
# it to be single quoted.  Same for b4_parse_param.

# TODO: should be in bison.m4
m4_define_default([b4_lex_param], [[]])
m4_define([b4_lex_param], b4_lex_param)
m4_define([b4_parse_param], b4_parse_param)

# b4_lex_param_decl
# -----------------
# Extra formal arguments of the constructor.
m4_define([b4_lex_param_decl],
[m4_ifset([b4_lex_param],
          [b4_remove_comma([$1],
                           b4_param_decls(b4_lex_param))],
          [$1])])

m4_define([b4_param_decls],
          [m4_map([b4_param_decl], [$@])])
m4_define([b4_param_decl], [, $1])

m4_define([b4_remove_comma], [m4_ifval(m4_quote($1), [$1, ], [])m4_shift2($@)])

# b4_parse_param_decl
# -------------------
# Extra formal arguments of the constructor.
m4_define([b4_parse_param_decl],
[m4_ifset([b4_parse_param],
          [b4_remove_comma([$1],
                           b4_param_decls(b4_parse_param))],
          [$1])])

# b4_lex_param_call
# -----------------
# Delegating the lexer parameters to the lexer constructor.
m4_define([b4_lex_param_call],
          [m4_ifset([b4_lex_param],
                    [b4_remove_comma([$1],
                                     b4_param_calls(b4_lex_param))],
                    [$1])])
m4_define([b4_param_calls],
          [m4_map([b4_param_call], [$@])])
m4_define([b4_param_call], [, $2])

# b4_parse_param_cons
# -------------------
# Extra initialisations of the constructor.
m4_define([b4_parse_param_cons],
          [m4_ifset([b4_parse_param],
                    [b4_constructor_calls(b4_parse_param)])])

m4_define([b4_constructor_calls],
          [m4_map([b4_constructor_call], [$@])])
m4_define([b4_constructor_call],
          [this.$2 = $2;
          ])

# b4_parse_param_vars
# -------------------
# Extra instance variables.
m4_define([b4_parse_param_vars],
          [m4_ifset([b4_parse_param],
                    [
    /* User arguments.  */
b4_var_decls(b4_parse_param)])])

m4_define([b4_var_decls],
          [m4_map_sep([b4_var_decl], [
], [$@])])
m4_define([b4_var_decl],
          [    protected final $1;])

# b4_maybe_throws(THROWS)
# -----------------------
# Expand to either an empty string or "throws THROWS".
m4_define([b4_maybe_throws],
          [m4_ifval($1, [ throws $1])])

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-05-24 09:01:39
..	dir	-	root/root	0755	2025-05-24 09:01:39
README-D.txt	file	1.85 KB	root/root	0644	2020-07-07 04:23:40
bison.m4	file	41.03 KB	root/root	0644	2020-11-14 10:49:43
c++-skel.m4	file	1.14 KB	root/root	0644	2020-07-07 04:23:40
c++.m4	file	20.7 KB	root/root	0644	2020-11-14 10:49:43
c-like.m4	file	2.5 KB	root/root	0644	2020-09-21 05:00:47
c-skel.m4	file	1.14 KB	root/root	0644	2020-07-07 04:23:40
c.m4	file	32.15 KB	root/root	0644	2020-11-14 10:49:43
d-skel.m4	file	1.11 KB	root/root	0644	2020-07-07 04:23:40
d.m4	file	10.48 KB	root/root	0644	2020-11-14 10:49:43
glr.c	file	88.88 KB	root/root	0644	2020-11-14 10:49:43
glr.cc	file	12.35 KB	root/root	0644	2020-11-14 10:49:43
java-skel.m4	file	1.14 KB	root/root	0644	2020-07-07 04:23:40
java.m4	file	14.25 KB	root/root	0644	2020-11-13 06:00:08
lalr1.cc	file	50.08 KB	root/root	0644	2020-11-14 10:49:43
lalr1.d	file	29.84 KB	root/root	0644	2020-11-14 10:49:43
lalr1.java	file	36.19 KB	root/root	0644	2020-11-14 10:49:43
location.cc	file	10.13 KB	root/root	0644	2020-11-14 10:49:43
stack.hh	file	3.88 KB	root/root	0644	2020-11-14 10:49:43
traceon.m4	file	87 B	root/root	0644	2020-09-21 05:00:47
variant.hh	file	14.66 KB	root/root	0644	2020-11-14 10:49:43
yacc.c	file	69.6 KB	root/root	0644	2020-11-14 10:49:43

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