style: harmonize the labels of yyparse

[Akim Demaille]

commit 6bc54a934eba1f2b187c4dd0407d21e52b2a903d
Author: Akim Demaille <address@hidden>
Date:   Tue Nov 20 20:41:23 2018 +0100

    style: harmonize the labels of yyparse
    
    * data/glr.c, data/lalr1.cc, data/yacc.c: Fix indentation and
    other formatting issues.

diff --git a/data/glr.c b/data/glr.c
index 8f71c527..437677d8 100644
--- a/data/glr.c
+++ b/data/glr.c
@@ -1256,10 +1256,10 @@ yyglrShiftDefer (yyGLRStack* yystackp, size_t yyk, 
yyStateNum yylrState,
 # define YY_REDUCE_PRINT(Args)
 #else
 # define YY_REDUCE_PRINT(Args)          \
-do {                                    \
-  if (yydebug)                          \
-    yy_reduce_print Args;               \
-} while (0)
+  do {                                  \
+    if (yydebug)                        \
+      yy_reduce_print Args;             \
+  } while (0)
 
 /*----------------------------------------------------------------------.
 | Report that stack #YYK of *YYSTACKP is going to be reduced by YYRULE. |
diff --git a/data/lalr1.cc b/data/lalr1.cc
index a23bf60c..8486f9e8 100644
--- a/data/lalr1.cc
+++ b/data/lalr1.cc
@@ -793,17 +793,22 @@ b4_dollar_popdef])[]dnl
     yystack_.clear ();
     yypush_ (YY_NULLPTR, 0, YY_MOVE (yyla));
 
-    // A new symbol was pushed on the stack.
+  /*-----------------------------------------------.
+  | yynewstate -- push a new symbol on the stack.  |
+  `-----------------------------------------------*/
   yynewstate:
     YYCDEBUG << "Entering state " << yystack_[0].state << '\n';
 
     // Accept?
     if (yystack_[0].state == yyfinal_)
-      goto yyacceptlab;
+      YYACCEPT;
 
     goto yybackup;
 
-    // Backup.
+
+  /*-----------.
+  | yybackup.  |
+  `-----------*/
   yybackup:
     // Try to take a decision without lookahead.
     yyn = yypact_[yystack_[0].state];
@@ -856,6 +861,7 @@ b4_dollar_popdef])[]dnl
     yypush_ ("Shifting", yyn, YY_MOVE (yyla));
     goto yynewstate;
 
+
   /*-----------------------------------------------------------.
   | yydefault -- do the default action for the current state.  |
   `-----------------------------------------------------------*/
@@ -865,8 +871,9 @@ b4_dollar_popdef])[]dnl
       goto yyerrlab;
     goto yyreduce;
 
+
   /*-----------------------------.
-  | yyreduce -- Do a reduction.  |
+  | yyreduce -- do a reduction.  |
   `-----------------------------*/
   yyreduce:
     yylen = yyr2_[yyn];
@@ -926,6 +933,7 @@ b4_dollar_popdef])[]dnl
     }
     goto yynewstate;
 
+
   /*--------------------------------------.
   | yyerrlab -- here on detecting error.  |
   `--------------------------------------*/
@@ -963,7 +971,6 @@ b4_dollar_popdef])[]dnl
   | yyerrorlab -- error raised explicitly by YYERROR.  |
   `---------------------------------------------------*/
   yyerrorlab:
-
     /* Pacify compilers like GCC when the user code never invokes
        YYERROR and the label yyerrorlab therefore never appears in user
        code.  */
@@ -975,6 +982,7 @@ b4_dollar_popdef])[]dnl
     yylen = 0;
     goto yyerrlab1;
 
+
   /*-------------------------------------------------------------.
   | yyerrlab1 -- common code for both syntax error and YYERROR.  |
   `-------------------------------------------------------------*/
@@ -1015,16 +1023,26 @@ b4_dollar_popdef])[]dnl
     }
     goto yynewstate;
 
-    // Accept.
+
+  /*-------------------------------------.
+  | yyacceptlab -- YYACCEPT comes here.  |
+  `-------------------------------------*/
   yyacceptlab:
     yyresult = 0;
     goto yyreturn;
 
-    // Abort.
+
+  /*-----------------------------------.
+  | yyabortlab -- YYABORT comes here.  |
+  `-----------------------------------*/
   yyabortlab:
     yyresult = 1;
     goto yyreturn;
 
+
+  /*-----------------------------------------------------.
+  | yyreturn -- parsing is finished, return the result.  |
+  `-----------------------------------------------------*/
   yyreturn:
     if (!yyla.empty ())
       yy_destroy_ ("Cleanup: discarding lookahead", yyla);
diff --git a/data/yacc.c b/data/yacc.c
index 0ba48bef..dc8d38e7 100644
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -624,23 +624,23 @@ static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
 
 #define YYRECOVERING()  (!!yyerrstatus)
 
-#define YYBACKUP(Token, Value)                                  \
-do                                                              \
-  if (yychar == YYEMPTY)                                        \
-    {                                                           \
-      yychar = (Token);                                         \
-      yylval = (Value);                                         \
-      YYPOPSTACK (yylen);                                       \
-      yystate = *yyssp;                                         \]b4_lac_if([[
-      YY_LAC_DISCARD ("YYBACKUP");                              \]])[
-      goto yybackup;                                            \
-    }                                                           \
-  else                                                          \
-    {                                                           \
-      yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
-      YYERROR;                                                  \
-    }                                                           \
-while (0)
+#define YYBACKUP(Token, Value)                                    \
+  do                                                              \
+    if (yychar == YYEMPTY)                                        \
+      {                                                           \
+        yychar = (Token);                                         \
+        yylval = (Value);                                         \
+        YYPOPSTACK (yylen);                                       \
+        yystate = *yyssp;                                         
\]b4_lac_if([[
+        YY_LAC_DISCARD ("YYBACKUP");                              \]])[
+        goto yybackup;                                            \
+      }                                                           \
+    else                                                          \
+      {                                                           \
+        yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
+        YYERROR;                                                  \
+      }                                                           \
+  while (0)
 
 /* Error token number */
 #define YYTERROR        1
@@ -1436,15 +1436,20 @@ b4_locations_if([[  yylsp[0] = 
]b4_push_if([b4_pure_if([*])yypushed_loc], [yyllo
 ]])dnl
 [  goto yysetstate;
 
+
 /*------------------------------------------------------------.
-| yynewstate -- Push a new state, which is found in yystate.  |
+| yynewstate -- push a new state, which is found in yystate.  |
 `------------------------------------------------------------*/
- yynewstate:
+yynewstate:
   /* In all cases, when you get here, the value and location stacks
      have just been pushed.  So pushing a state here evens the stacks.  */
   yyssp++;
 
- yysetstate:
+
+/*--------------------------------------------------------------------.
+| yynewstate -- set current state (the top of the stack) to yystate.  |
+`--------------------------------------------------------------------*/
+yysetstate:
   *yyssp = (yytype_int16) yystate;
 
   if (yyss + yystacksize - 1 <= yyssp)
@@ -1519,11 +1524,11 @@ b4_locations_if([[  yylsp[0] = 
]b4_push_if([b4_pure_if([*])yypushed_loc], [yyllo
 
   goto yybackup;
 
+
 /*-----------.
 | yybackup.  |
 `-----------*/
 yybackup:
-
   /* Do appropriate processing given the current state.  Read a
      lookahead token if we need one and don't already have one.  */
 
@@ -1621,7 +1626,7 @@ yydefault:
 
 
 /*-----------------------------.
-| yyreduce -- Do a reduction.  |
+| yyreduce -- do a reduction.  |
 `-----------------------------*/
 yyreduce:
   /* yyn is the number of a rule to reduce with.  */
@@ -1772,7 +1777,6 @@ yyerrlab:
 | yyerrorlab -- error raised explicitly by YYERROR.  |
 `---------------------------------------------------*/
 yyerrorlab:
-
   /* Pacify compilers like GCC when the user code never invokes
      YYERROR and the label yyerrorlab therefore never appears in user
      code.  */
@@ -1848,6 +1852,7 @@ yyacceptlab:
   yyresult = 0;
   goto yyreturn;
 
+
 /*-----------------------------------.
 | yyabortlab -- YYABORT comes here.  |
 `-----------------------------------*/
@@ -1855,6 +1860,7 @@ yyabortlab:
   yyresult = 1;
   goto yyreturn;
 
+
 #if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[
 /*-------------------------------------------------.
 | yyexhaustedlab -- memory exhaustion comes here.  |
@@ -1865,6 +1871,10 @@ yyexhaustedlab:
   /* Fall through.  */
 #endif
 
+
+/*-----------------------------------------------------.
+| yyreturn -- parsing is finished, return the result.  |
+`-----------------------------------------------------*/
 yyreturn:
   if (yychar != YYEMPTY)
     {
@@ -1892,6 +1902,10 @@ yyreturn:
     YYSTACK_FREE (yyes);]])b4_push_if([[
   yyps->yynew = 1;
 
+
+/*-----------------------------------------.
+| yypushreturn -- ask for the next token.  |
+`-----------------------------------------*/
 yypushreturn:]])[
 #if YYERROR_VERBOSE
   if (yymsg != yymsgbuf)