}
]])
-AT_CHECK([bison input.y -d -v -o input.c])
-AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -o input], 0, [], [ignore])
-AT_CHECK([./input], 0,
+AT_CHECK([bison -d -v -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input], 0,
[[0123456789
]])
int val;
};
-%type <val> a_1 a_2 a_4 a_5
+%type <val> a_1 a_2 a_5
sum_of_the_five_previous_values
%%
-exp: a_1 a_2 { $<val>$ = 3; } a_4 a_5 sum_of_the_five_previous_values
+exp: a_1 a_2 { $<val>$ = 3; } { $<val>$ = $<val>3 + 1; } a_5
+ sum_of_the_five_previous_values
{
printf ("%d\n", $6);
}
;
a_1: { $$ = 1; };
a_2: { $$ = 2; };
-a_4: { $$ = 4; };
a_5: { $$ = 5; };
sum_of_the_five_previous_values:
}
]])
-AT_CHECK([bison input.y -d -v -o input.c])
-AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -o input], 0, [], [ignore])
-AT_CHECK([./input], 0,
+AT_CHECK([bison -d -v -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input], 0,
[[15
]])
-## ------------- ##
-## Destructors. ##
-## ------------- ##
+## -------------------------- ##
+## Printers and Destructors. ##
+## -------------------------- ##
-AT_SETUP([Destructors])
+AT_SETUP([Printers and Destructors])
# Make sure complex $n work.
#define YYERROR_VERBOSE 1
#define YYDEBUG 1
-#define YYPRINT yyprint
%}
%verbose
%union
int ival;
}
%type <ival> 'x' thing line input
-%destructor { printf ("Freeing input %d\n", $$); } input
-%destructor { printf ("Freeing line %d\n", $$); } line
-%destructor { printf ("Freeing thing %d\n", $$); } thing
-%destructor { printf ("Freeing 'x' %d\n", $$); } 'x'
+
+%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, @$);
+ fprintf (stdout, "\n");
+ }
+ input line thing 'x'
%{
static int yylex (void);
static void yyerror (const char *msg);
-static void yyprint (FILE *out, int num, YYSTYPE val);
%}
can be reduced. */
'x', 'x', 'x', 'x', 'x', 'x', ';',
- /* Load the stack and provoke an error that cannot be caught be
- the grammar, and check that the stack is cleared. */
+ /* Load the stack and provoke an error that cannot be caught by
+ the grammar, to check that the stack is cleared. */
'x', 'x', ';',
'x', ';',
'y'
};
- static int counter = 0;
+ static unsigned int counter = 0;
if (counter < (sizeof(input) / sizeof (input[0])))
{
yylval.ival = counter;
- printf ("sending: '%c'(%d)\n", input[counter], counter);
- return input[counter++];
+ /* As in BASIC, line numbers go from 10 to 10. */
+ yylloc.first_line = 10 * counter;
+ printf ("sending: '%c' (value = %d, line %d)\n",
+ input[counter], yylval.ival, yylloc.first_line);
+ return (int) input[counter++];
}
else
{
static void
yyerror (const char *msg)
{
- fprintf (stdout, "%s\n", msg);
-}
-
-static void
-yyprint (FILE *out, int num, YYSTYPE val)
-{
- fprintf (out, " = %d", val.ival);
+ fprintf (stdout, "%d: %s\n", yylloc.first_line, msg);
}
int
}
]])
-AT_CHECK([bison input.y -d -v -o input.c])
-AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -o input], 0, [], [ignore])
-AT_CHECK([./input], 1,
-[[sending: 'x'(0)
+AT_CHECK([bison --location -d -v -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input], 1,
+[[sending: 'x' (value = 0, line 0)
thing(0): 'x'(0)
-sending: 'x'(1)
+sending: 'x' (value = 1, line 10)
thing(1): 'x'(1)
-sending: 'x'(2)
+sending: 'x' (value = 2, line 20)
thing(2): 'x'(2)
-sending: 'x'(3)
-parse error, unexpected 'x', expecting ';'
-Freeing thing 2
-Freeing thing 1
-Freeing thing 0
-Freeing 'x' 3
-sending: 'x'(4)
-Freeing 'x' 4
-sending: 'x'(5)
-Freeing 'x' 5
-sending: ';'(6)
+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'(7)
+sending: 'x' (value = 7, line 70)
thing(7): 'x'(7)
-sending: 'x'(8)
+sending: 'x' (value = 8, line 80)
thing(8): 'x'(8)
-sending: ';'(9)
+sending: ';' (value = 9, line 90)
line(7): thing(7) thing(8) ';'
-sending: 'x'(10)
+sending: 'x' (value = 10, line 100)
thing(10): 'x'(10)
-sending: ';'(11)
+sending: ';' (value = 11, line 110)
line(10): thing(10) ';'
-sending: 'y'(12)
-parse error, unexpected $undefined., expecting $ or error or 'x'
+sending: 'y' (value = 12, line 120)
+120: parse error, unexpected $undefined, expecting $end or 'x'
sending: EOF
-Freeing line 10
-Freeing line 7
-Freeing line -1
+Freeing nterm line (10 from 100)
+Freeing nterm line (7 from 70)
+Freeing nterm line (-1 from 50)
Parsing FAILED.
]])