X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/2c1bf9bd68c361a55ef0130f269a674a4e87996e..34db451c379888fa593268b65518ad191bef21f5:/data/lalr1.java
diff --git a/data/lalr1.java b/data/lalr1.java
index ea956548..c6bd4038 100644
--- a/data/lalr1.java
+++ b/data/lalr1.java
@@ -1,6 +1,6 @@
# Java skeleton for Bison -*- autoconf -*-
-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2008, 2009, 2010 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
@@ -17,15 +17,23 @@
m4_include(b4_pkgdatadir/[java.m4])
-b4_defines_if([b4_fatal([%s: %%defines does not make sense in Java], [b4_skeleton])])
-m4_ifval(m4_defn([b4_symbol_destructors]),
- [b4_fatal([%s: %%destructor does not make sense in Java], [b4_skeleton])],
- [])
+b4_defines_if([b4_fatal([%s: %%defines does not make sense in Java],
+ [b4_skeleton])])
+
+# We don't depend on %debug in Java, but pacify warnings about non-used flags.
+b4_parse_trace_if([0], [0])
+
+m4_define([b4_symbol_no_destructor_assert],
+[b4_symbol_if([$1], [has_destructor],
+ [b4_fatal([%s: %s: %%destructor does not make sense in Java],
+ [b4_skeleton],
+ [b4_symbol_action_location([$1], [destructor])])])])
+b4_symbol_foreach([b4_symbol_no_destructor_assert])
m4_divert_push(0)dnl
@output(b4_parser_file_name@)@
b4_copyright([Skeleton implementation for Bison LALR(1) parsers in Java],
- [2007, 2008])
+ [2007, 2008, 2009, 2010])
b4_percent_define_ifdef([package], [package b4_percent_define_get([package]);
])[/* First part of user declarations. */
@@ -342,11 +350,9 @@ b4_lexer_if([[
* printing an error message. */
public static final int YYERROR = 2;
- /**
- * Returned by a Bison action in order to print an error message and start
- * error recovery. */
- public static final int YYFAIL = 3;
-
+ // Internal return codes that are not supported for user semantic
+ // actions.
+ private static final int YYERRLAB = 3;
private static final int YYNEWSTATE = 4;
private static final int YYDEFAULT = 5;
private static final int YYREDUCE = 6;
@@ -525,7 +531,7 @@ m4_popdef([b4_at_dollar])])dnl
/* Take a decision. First try without lookahead. */
yyn = yypact_[yystate];
- if (yyn == yypact_ninf_)
+ if (yy_pact_value_is_default_ (yyn))
{
label = YYDEFAULT;
break;
@@ -564,8 +570,8 @@ m4_popdef([b4_at_dollar])])dnl
/* <= 0 means reduce or error. */
else if ((yyn = yytable_[yyn]) <= 0)
{
- if (yyn == 0 || yyn == yytable_ninf_)
- label = YYFAIL;
+ if (yy_table_value_is_error_ (yyn))
+ label = YYERRLAB;
else
{
yyn = -yyn;
@@ -599,7 +605,7 @@ m4_popdef([b4_at_dollar])])dnl
case YYDEFAULT:
yyn = yydefact_[yystate];
if (yyn == 0)
- label = YYFAIL;
+ label = YYERRLAB;
else
label = YYREDUCE;
break;
@@ -616,7 +622,7 @@ m4_popdef([b4_at_dollar])])dnl
/*------------------------------------.
| yyerrlab -- here on detecting error |
`------------------------------------*/
- case YYFAIL:
+ case YYERRLAB:
/* If not already recovering from an error, report this error. */
if (yyerrstatus_ == 0)
{
@@ -668,7 +674,7 @@ m4_popdef([b4_at_dollar])])dnl
for (;;)
{
yyn = yypact_[yystate];
- if (yyn != yypact_ninf_)
+ if (!yy_pact_value_is_default_ (yyn))
{
yyn += yyterror_;
if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
@@ -727,7 +733,8 @@ m4_popdef([b4_at_dollar])])dnl
StringBuffer res;
/* Start YYX at -YYN if negative to avoid negative indexes in
- YYCHECK. */
+ 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. */
@@ -735,7 +742,8 @@ m4_popdef([b4_at_dollar])])dnl
int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
int count = 0;
for (int x = yyxbegin; x < yyxend; ++x)
- if (yycheck_[x + yyn] == x && x != yyterror_)
+ if (yycheck_[x + yyn] == x && x != yyterror_
+ && !yy_table_value_is_error_ (yytable_[x + yyn]))
++count;
// FIXME: This method of building the message is not compatible
@@ -746,19 +754,38 @@ m4_popdef([b4_at_dollar])])dnl
{
count = 0;
for (int x = yyxbegin; x < yyxend; ++x)
- if (yycheck_[x + yyn] == x && x != yyterror_)
+ if (yycheck_[x + yyn] == x && x != yyterror_
+ && !yy_table_value_is_error_ (yytable_[x + yyn]))
{
res.append (count++ == 0 ? ", expecting " : " or ");
res.append (yytnamerr_ (yytname_[x]));
}
}
- return res.toString ();
+ return res.toString ();
}
}
]])[
return "syntax error";
}
+ /**
+ * Whether the given yypact_ value indicates a defaulted state.
+ * @@param yyvalue the value to check
+ */
+ private static boolean yy_pact_value_is_default_ (int yyvalue)
+ {
+ return yyvalue == yypact_ninf_;
+ }
+
+ /**
+ * Whether the given yytable_ value indicates a syntax error.
+ * @@param yyvalue the value to check
+ */
+ private static boolean yy_table_value_is_error_ (int yyvalue)
+ {
+ return yyvalue == yytable_ninf_;
+ }
+
private static final ]b4_int_type_for([b4_pact])[ yypact_ninf_ = ]b4_pact_ninf[;
private static final ]b4_int_type_for([b4_table])[ yytable_ninf_ = ]b4_table_ninf[;
@@ -821,5 +848,5 @@ b4_percent_code_get[]dnl
}
-b4_epilogue
+b4_epilogue[]dnl
m4_divert_pop(0)dnl