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YYFAIL: warn about uses and remove from lalr1.java.

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* NEWS (2.5): Document.
* data/lalr1.java (parser::YYStack::YYFAIL): Rename to YYERRLAB,
and make it private.  Update all uses.
* src/scan-code.l (SC_RULE_ACTION): Implement warning.
This commit is contained in:
Joel E. Denny
2009-12-21 14:58:48 -05:00
parent 1625df5b18
commit 4395a9ff4f
4 changed files with 39 additions and 10 deletions
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15
data/lalr1.java
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@@ -350,12 +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. Formally deprecated in Bison 2.4.2's NEWS entry, where
* a plan to phase it out is discussed. */
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;
@@ -574,7 +571,7 @@ m4_popdef([b4_at_dollar])])dnl
else if ((yyn = yytable_[yyn]) <= 0)
{
if (yy_table_value_is_error_ (yyn))
label = YYFAIL;
label = YYERRLAB;
else
{
yyn = -yyn;
@@ -608,7 +605,7 @@ m4_popdef([b4_at_dollar])])dnl
case YYDEFAULT:
yyn = yydefact_[yystate];
if (yyn == 0)
label = YYFAIL;
label = YYERRLAB;
else
label = YYREDUCE;
break;
@@ -625,7 +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)
{