# Java skeleton for Bison -*- autoconf -*-
-# Copyright (C) 2007 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# 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 2 of the License, or
+# 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, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
m4_include(b4_pkgdatadir/[java.m4])
m4_divert_push(0)dnl
@output(b4_parser_file_name@)
b4_copyright([Skeleton implementation for Bison LALR(1) parsers in Java],
- [2007])
+ [2007, 2008])
b4_percent_define_ifdef([package], [package b4_percent_define_get([package]);
])[/* First part of user declarations. */
]b4_pre_prologue
b4_percent_code_get([[imports]])
[/**
- * A Bison parser, automatically generated from <tt>@ofile@</tt>.
+ * A Bison parser, automatically generated from <tt>]m4_bpatsubst(b4_file_name, [^"\(.*\)"$], [\1])[</tt>.
*
* @@author LALR (1) parser skeleton written by Paolo Bonzini.
*/
-]b4_public_if([public ])b4_abstract_if([abstract ])[class ]b4_parser_class_name[
+]b4_public_if([public ])dnl
+b4_abstract_if([abstract ])dnl
+b4_final_if([final ])dnl
+b4_strictfp_if([strictfp ])dnl
+[class ]b4_parser_class_name[]dnl
+b4_percent_define_get3([extends], [ extends ])dnl
+b4_percent_define_get3([implements], [ implements ])[
{
]b4_identification[
public ]b4_position_type[ end;
/**
- * Create a ]b4_location_type[ denoting an empty range located at
+ * Create a <code>]b4_location_type[</code> denoting an empty range located at
* a given point.
* @@param loc The position at which the range is anchored. */
public ]b4_location_type[ (]b4_position_type[ loc) {
/**
* Create a <code>]b4_location_type[</code> from the endpoints of the range.
* @@param begin The first position included in the range.
- * @@param begin The first position beyond the range. */
+ * @@param end The first position beyond the range. */
public ]b4_location_type[ (]b4_position_type[ begin, ]b4_position_type[ end) {
this.begin = begin;
this.end = end;
b4_token_enums(b4_tokens)
b4_locations_if([[
- private ]b4_location_type[ yylloc (Stack rhs, int n)
+ private ]b4_location_type[ yylloc (YYStack rhs, int n)
{
if (n > 0)
return new ]b4_location_type[ (rhs.locationAt (1).begin, rhs.locationAt (n).end);
else
return new ]b4_location_type[ (rhs.locationAt (0).end);
- }]])
+ }]])[
- b4_pure_if([[/**
+ /**
* Communication interface between the scanner and the Bison-generated
* parser <tt>]b4_parser_class_name[</tt>.
*/
/**
* Method to retrieve the semantic value of the last scanned token.
* @@return the semantic value of the last scanned token. */
- ]b4_union_name[ getLVal ();]], [[
-
- /**
- * A place where the scanner can store the beginning position of the
- * last scanned token. */
- ]b4_locations_if([b4_position_type[ yystartpos;]])[
+ ]b4_yystype[ getLVal ();
/**
- * A place where the scanner can store the ending position of the last
- * scanned token, i.e. the first position beyond the last scanned token. */
- ]b4_locations_if([b4_position_type[ yyendpos;]])[
-
- /**
- * A place where the scanner can store the semantic value of the
- * last scanned token. */
- protected ]b4_union_name[ yylval;]])
-
- b4_single_class_if([], [[/**
* Entry point for the scanner. Returns the token identifier corresponding
- * to the next token and ]b4_pure_if([prepares to return], [stores])[
- * the semantic value]b4_locations_if([ and beginning/ending positions])[
- * of the token.
+ * to the next token and prepares to return the semantic value
+ * ]b4_locations_if([and beginning/ending positions ])[of the token.
* @@return the token identifier corresponding to the next token. */
- abstract int yylex (]b4_lex_param_decl) b4_maybe_throws([b4_lex_throws])[;
+ int yylex () ]b4_maybe_throws([b4_lex_throws])[;
/**
* Entry point for error reporting. Emits an error
- * ]b4_locations_if([ referring to the given location])[in a user-defined
- * way.
+ * ]b4_locations_if([referring to the given location ])[in a user-defined way.
*
- * ]b4_locations_if([loc], [[The location of the element to which the
+ * ]b4_locations_if([[@@param loc The location of the element to which the
* error message is related]])[
* @@param s The string for the error message. */
- abstract void yyerror (]b4_locations_if([b4_location_type[ loc, ]])[String s);]])
- b4_pure_if([}
+ void yyerror (]b4_locations_if([b4_location_type[ loc, ]])[String s);]
+ }
- /** The object doing lexical analysis for us. */
- private Lexer yylex;])
- b4_parse_param_vars[
+ b4_lexer_if([[private class YYLexer implements Lexer {
+]b4_percent_code_get([[lexer]])[
+ }
+
+ ]])[/** The object doing lexical analysis for us. */
+ private Lexer yylexer;
+ ]
+ b4_parse_param_vars
+b4_lexer_if([[
/**
- * Instantiates the Bison-generated parser. ]b4_pure_if([
- * @@param yylex The scanner that will supply tokens to the parser.])[
+ * Instantiates the Bison-generated parser.
*/
- public ]b4_parser_class_name[ (]b4_parse_param_decl([b4_pure_if([Lexer yylex])])[) {
- ]b4_pure_if(this.yylex = yylex;)
- b4_parse_param_cons[
+ public ]b4_parser_class_name (b4_parse_param_decl([b4_lex_param_decl])[) {
+ this.yylexer = new YYLexer(]b4_lex_param_call[);
+ ]b4_parse_param_cons[
}
+]])
- private java.io.PrintStream debugStream = System.err;
+ /**
+ * Instantiates the Bison-generated parser.
+ * @@param yylexer The scanner that will supply tokens to the parser.
+ */
+ b4_lexer_if([[protected]], [[public]]) b4_parser_class_name[ (]b4_parse_param_decl([[Lexer yylexer]])[) {
+ this.yylexer = yylexer;
+ ]b4_parse_param_cons[
+ }
+
+ private java.io.PrintStream yyDebugStream = System.err;
/**
* Return the <tt>PrintStream</tt> on which the debugging output is
* printed.
*/
- public final java.io.PrintStream getDebugStream () { return debugStream; }
+ public final java.io.PrintStream getDebugStream () { return yyDebugStream; }
/**
* Set the <tt>PrintStream</tt> on which the debug output is printed.
* @@param s The stream that is used for debugging output.
*/
- public final void setDebugStream(java.io.PrintStream s) { debugStream = s; }
+ public final void setDebugStream(java.io.PrintStream s) { yyDebugStream = s; }
private int yydebug = 0;
*/
public final void setDebugLevel(int level) { yydebug = level; }
- ]b4_pure_if([[
- private final int yylex (]b4_lex_param_decl) b4_maybe_throws([b4_lex_throws]) [{
- return yylex.yylex (]b4_lex_param_call[);
+ private final int yylex () ]b4_maybe_throws([b4_lex_throws]) [{
+ return yylexer.yylex ();
}
protected final void yyerror (]b4_locations_if([b4_location_type[ loc, ]])[String s) {
- yylex.yyerror (]b4_locations_if([loc, ])[s);
- }]])
- b4_locations_if([
+ yylexer.yyerror (]b4_locations_if([loc, ])[s);
+ }
+
+ ]b4_locations_if([
protected final void yyerror (String s) {
- yyerror ((Location)null, s);
+ yylexer.yyerror ((]b4_location_type[)null, s);
}
protected final void yyerror (]b4_position_type[ loc, String s) {
- yyerror (new ]b4_location_type[ (loc), s);
+ yylexer.yyerror (new ]b4_location_type[ (loc), s);
}])
[protected final void yycdebug (String s) {
if (yydebug > 0)
- debugStream.println (s);
+ yyDebugStream.println (s);
}
- private final class Stack {
+ private final class YYStack {
private int[] stateStack = new int[16];
]b4_locations_if([[private ]b4_location_type[[] locStack = new ]b4_location_type[[16];]])[
- private ]b4_union_name[[] valueStack = new ]b4_union_name[[16];
+ private ]b4_yystype[[] valueStack = new ]b4_yystype[[16];
public int size = 16;
public int height = -1;
- public final void push (int state, ]b4_union_name[ value]dnl
+ public final void push (int state, ]b4_yystype[ value]dnl
b4_locations_if([, ]b4_location_type[ loc])[) {
height++;
if (size == height)
System.arraycopy (locStack, 0, newLocStack, 0, height);
locStack = newLocStack;]])
- b4_union_name[[] newValueStack = new ]b4_union_name[[size * 2];
+ b4_yystype[[] newValueStack = new ]b4_yystype[[size * 2];
System.arraycopy (valueStack, 0, newValueStack, 0, height);
valueStack = newValueStack;
return locStack[height - i];
}
- ]])[public final ]b4_union_name[ valueAt (int i) {
+ ]])[public final ]b4_yystype[ valueAt (int i) {
return valueStack[height - i];
}
* Return whether error recovery is being done. In this state, the parser
* reads token until it reaches a known state, and then restarts normal
* operation. */
- public final boolean yyrecovering ()
+ public final boolean recovering ()
{
return yyerrstatus_ == 0;
}
- private int yyaction (int yyn, Stack yystack, int yylen)
+ private int yyaction (int yyn, YYStack yystack, int yylen) ]b4_maybe_throws([b4_throws])[
{
- ]b4_union_name[ yyval;
+ ]b4_yystype[ yyval;
]b4_locations_if([b4_location_type[ yyloc = yylloc (yystack, yylen);]])[
/* If YYLEN is nonzero, implement the default value of the action:
`--------------------------------*/
private void yy_symbol_print (String s, int yytype,
- ]b4_union_name[ yyvaluep]dnl
+ ]b4_yystype[ yyvaluep]dnl
b4_locations_if([, Object yylocationp])[)
{
if (yydebug > 0)
yycdebug (s + (yytype < yyntokens_ ? " token " : " nterm ")
+ yytname_[yytype] + " ("]b4_locations_if([
+ yylocationp + ": "])[
- + (yyvaluep == null ? "(null)" : yyvaluep) + ")");
+ + (yyvaluep == null ? "(null)" : yyvaluep.toString ()) + ")");
}
/**
* @@return <tt>true</tt> if the parsing succeeds. Note that this does not
* imply that there were no syntax errors.
*/
- public boolean parse () ]b4_maybe_throws([b4_throws])[
+ public boolean parse () ]b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])[
{
/// Lookahead and lookahead in internal form.
int yychar = yyempty_;
int yylen = 0;
int yystate = 0;
- Stack yystack = new Stack ();
+ YYStack yystack = new YYStack ();
/* Error handling. */
int yynerrs_ = 0;
]b4_location_type[ yyloc;])
/// Semantic value of the lookahead.
- b4_union_name[ yylval = null;
+ b4_yystype[ yylval = null;
int yyresult;
case YYNEWSTATE:
yycdebug ("Entering state " + yystate + "\n");
if (yydebug > 0)
- yystack.print (debugStream);
+ yystack.print (yyDebugStream);
/* Accept? */
if (yystate == yyfinal_)
if (yychar == yyempty_)
{
yycdebug ("Reading a token: ");
- yychar = yylex (]b4_lex_param_call[);]
- b4_locations_if([
- b4_pure_if([yylloc = new ]b4_location_type[(yylex.getStartPos (),
- yylex.getEndPos ());],
- [yylloc = new ]b4_location_type[(this.yystartpos,
- this.yyendpos);]);])
- b4_pure_if([yylval = yylex.getLVal ()], [yylval = this.yylval]);[
+ yychar = yylex ();]
+ b4_locations_if([[
+ yylloc = new ]b4_location_type[(yylexer.getStartPos (),
+ yylexer.getEndPos ());]])
+ yylval = yylexer.getLVal ();[
}
/* Convert token to internal form. */
yystack.pop ();
yystate = yystack.stateAt (0);
if (yydebug > 0)
- yystack.print (debugStream);
+ yystack.print (yyDebugStream);
}
]b4_locations_if([
};
// Report on the debug stream that the rule yyrule is going to be reduced.
- private void yy_reduce_print (int yyrule, Stack yystack)
+ private void yy_reduce_print (int yyrule, YYStack yystack)
{
if (yydebug == 0)
return;
projects / bison.git / blobdiff