* src/state.h, src/state.c (state_new): New, extracted from...

[bison.git] / tests / actions.at

diff --git a/tests/actions.at b/tests/actions.at
index 2c614874fd1576d53b3182de7c9420a27fb69ea0..5331bfc61cb14b85a3e38468663eaf796d39898d 100644 (file)
--- a/tests/actions.at
+++ b/tests/actions.at
@@ -153,11 +153,11 @@ AT_CLEANUP
 
 
 
-## ------------- ##
-## Destructors.  ##
-## ------------- ##
+## -------------------------- ##
+## Printers and Destructors.  ##
+## -------------------------- ##
 
-AT_SETUP([Destructors])
+AT_SETUP([Printers and Destructors])
 
 # Make sure complex $n work.
 
@@ -169,74 +169,116 @@ AT_DATA([[input.y]],
 
 #define YYERROR_VERBOSE 1
 #define YYDEBUG 1
-/* #define YYPRINT yyprint */
-
-static int yylex (void);
-static void yyerror (const char *msg);
-static void yyprint (FILE *out, int toknum, int tokval);
 %}
-
+%verbose
 %union
 {
   int ival;
 }
-%type <ival> thing 'x'
-%destructor { printf ("Freeing thing %d\n", $$); } thing
-%destructor { printf ("Freeing 'x' %d\n", $$); } 'x'
+%type <ival> 'x' thing line input
+
+%printer { fprintf (yyout, "%d from %d", $$, @$.first_line); }
+   input line thing 'x'
+
+%destructor
+  {
+    fprintf (stdout, "Freeing ");
+    /* FIXME: Ouch: INTERNAL DETAILS EXPOSED HERE. */
+    /* Cannot use $$ which is the union member, not the union itself. */
+    yysymprint (stdout, yytype, yyvalue, @$);
+    fprintf (stdout, "\n");
+  }
+  input line thing 'x'
+
+%{
+static int yylex (void);
+static void yyerror (const char *msg);
+%}
+
 
 %%
 input:
   /* Nothing. */
-| input line
+    {
+      $$ = 0;
+      printf ("input(%d): /* Nothing */';'\n", $$);
+    }
+| line input /* Right recursive to load the stack so that popping at
+               EOF can be exercised.  */
+    {
+      $$ = 2;
+      printf ("input(%d): line(%d) input(%d)';'\n", $$, $1, $2);
+    }
 ;
 
 line:
   thing thing thing ';'
-    { printf ("input: thing(%d) thing(%d) thing(%d) ';'\n", $1, $2, $3); }
+    {
+      $$ = $1;
+      printf ("line(%d): thing(%d) thing(%d) thing(%d) ';'\n", $$, $1, $2, $3);
+    }
 | thing thing ';'
-    { printf ("input: thing(%d) thing(%d) ';'\n", $1, $2); }
+    {
+      $$ = $1;
+      printf ("line(%d): thing(%d) thing(%d) ';'\n", $$, $1, $2);
+    }
 | thing ';'
-    { printf ("input: thing(%d) ';'\n", $1); }
+    {
+      $$ = $1;
+      printf ("line(%d): thing(%d) ';'\n", $$, $1);
+    }
 | error ';'
-    { printf ("input: error ';'\n"); }
+    {
+      $$ = -1;
+      printf ("line(%d): error ';'\n", $$);
+    }
 ;
 
 thing:
-  'x'  { printf ("thing: 'x' (%d)\n", $1); $$ = $1; }
+  'x'
+    {
+      $$ = $1;
+      printf ("thing(%d): 'x'(%d)\n", $$, $1);
+    }
 ;
 %%
 static int
 yylex (void)
 {
-  static const int input[] =
+  static const unsigned int input[] =
     {
+      /* Exericise the discarding of stack top and input until `error'
+         can be reduced.  */
       'x', 'x', 'x', 'x', 'x', 'x', ';',
+
+      /* Load the stack and provoke an error that cannot be caught by
+         the grammar, to check that the stack is cleared. */
       'x', 'x', ';',
       'x', ';',
-      'x', 'y', ';'
+      'y'
     };
-  static int counter = 0;
+  static unsigned int counter = 0;
 
   if (counter < (sizeof(input) / sizeof (input[0])))
     {
        yylval.ival = counter;
-       return input[counter++];
+       /* As in BASIC, line numbers go from 10 to 10.  */
+       yylloc.first_line = 10 * counter;
+       printf ("sending: '%c' (value = %d, line %d)\n",
+               input[counter], yylval.ival, yylloc.first_line);
+       return (int) input[counter++];
     }
   else
-    return EOF;
+    {
+      printf ("sending: EOF\n");
+      return EOF;
+    }
 }
 
 static void
 yyerror (const char *msg)
 {
-  fprintf (stdout, "%s\n", msg);
-}
-
-static void
-yyprint (FILE *out, int toknum, int tokval)
-{
-  if (0 < toknum && toknum < 256)
-    fprintf (out, " = %d", tokval);
+  fprintf (stdout, "%d: %s\n", yylloc.first_line, msg);
 }
 
 int
@@ -253,30 +295,44 @@ main (void)
 }
 ]])
 
-AT_CHECK([bison input.y -d -v -o input.c])
+AT_CHECK([bison input.y --location -d -v -o input.c])
 AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -o input], 0, [], [ignore])
-AT_CHECK([./input], 0,
-[[thing: 'x' (0)
-thing: 'x' (1)
-thing: 'x' (2)
-parse error, unexpected 'x', expecting ';'
-Freeing thing 2
-Freeing thing 1
-Freeing thing 0
-Freeing 'x' 3
-Freeing 'x' 4
-Freeing 'x' 5
-input: error ';'
-thing: 'x' (7)
-thing: 'x' (8)
-input: thing(7) thing(8) ';'
-thing: 'x' (10)
-input: thing(10) ';'
-thing: 'x' (12)
-parse error, unexpected $undefined., expecting 'x' or ';'
-Freeing thing 12
-input: error ';'
-Successful parse.
+AT_CHECK([./input], 1,
+[[sending: 'x' (value = 0, line 0)
+thing(0): 'x'(0)
+sending: 'x' (value = 1, line 10)
+thing(1): 'x'(1)
+sending: 'x' (value = 2, line 20)
+thing(2): 'x'(2)
+sending: 'x' (value = 3, line 30)
+30: parse error, unexpected 'x', expecting ';'
+Freeing nterm thing (2 from 20)
+Freeing nterm thing (1 from 10)
+Freeing nterm thing (0 from 0)
+Freeing token 'x' (3 from 30)
+sending: 'x' (value = 4, line 40)
+Freeing token 'x' (4 from 40)
+sending: 'x' (value = 5, line 50)
+Freeing token 'x' (5 from 50)
+sending: ';' (value = 6, line 60)
+line(-1): error ';'
+sending: 'x' (value = 7, line 70)
+thing(7): 'x'(7)
+sending: 'x' (value = 8, line 80)
+thing(8): 'x'(8)
+sending: ';' (value = 9, line 90)
+line(7): thing(7) thing(8) ';'
+sending: 'x' (value = 10, line 100)
+thing(10): 'x'(10)
+sending: ';' (value = 11, line 110)
+line(10): thing(10) ';'
+sending: 'y' (value = 12, line 120)
+120: parse error, unexpected $undefined., expecting $ or error or 'x'
+sending: EOF
+Freeing nterm line (10 from 100)
+Freeing nterm line (7 from 70)
+Freeing nterm line (-1 from 50)
+Parsing FAILED.
 ]])
 
 AT_CLEANUP