X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/c932d6135ca3e508f7136810b9b0bf79725290b9..63951be29fcb8e21146a9377176d53d509c575ca:/tests/glr-regression.at diff --git a/tests/glr-regression.at b/tests/glr-regression.at index 7c4c814e..8570b19d 100644 --- a/tests/glr-regression.at +++ b/tests/glr-regression.at @@ -24,6 +24,7 @@ AT_BANNER([[GLR Regression Tests]]) AT_SETUP([Badly Collapsed GLR States]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr1.y], [[/* Regression Test: Improper state compression */ /* Reported by Scott McPeak */ @@ -31,11 +32,12 @@ AT_DATA_GRAMMAR([glr-regr1.y], %{ #include #include +#include #define YYSTYPE int static YYSTYPE exprMerge (YYSTYPE x0, YYSTYPE x1); -int yylex (void); -void yyerror (char const *msg); +]AT_YYERROR_DECLARE[ +]AT_YYLEX_DECLARE[ %} @@ -71,12 +73,7 @@ main (void) return yyparse (); } -void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - +]AT_YYERROR_DEFINE[ int yylex (void) @@ -84,8 +81,7 @@ yylex (void) for (;;) { int ch; - if (feof (stdin)) - abort (); + assert (!feof (stdin)); ch = getchar (); if (ch == EOF) return 0; @@ -94,6 +90,7 @@ yylex (void) } } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr1.c glr-regr1.y]], 0, [], [glr-regr1.y: conflicts: 1 shift/reduce @@ -119,6 +116,7 @@ AT_CLEANUP AT_SETUP([Improper handling of embedded actions and dollar(-N) in GLR parsers]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr2a.y], [[/* Regression Test: Improper handling of embedded actions and $-N */ /* Reported by S. Eken */ @@ -130,8 +128,9 @@ AT_DATA_GRAMMAR([glr-regr2a.y], #include #include #include - int yylex (void); - void yyerror (char const *); + #include + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ %} %glr-parser @@ -171,7 +170,7 @@ var_printer: 'v' { printf ("Variable: '%s'\n", $-1); } %% - +]AT_YYERROR_DEFINE[ FILE *input; int @@ -179,9 +178,9 @@ yylex (void) { char buf[50]; char *s; - if (feof (stdin)) - abort (); - switch (fscanf (input, " %1[a-z,]", buf)) { + assert (!feof (stdin)); + switch (fscanf (input, " %1[a-z,]", buf)) + { case 1: return buf[0]; case EOF: @@ -191,19 +190,13 @@ yylex (void) } if (fscanf (input, "%49s", buf) != 1) return 0; - if (sizeof buf - 1 <= strlen (buf)) - abort (); + assert (strlen (buf) < sizeof buf - 1); s = (char *) malloc (strlen (buf) + 1); strcpy (s, buf); yylval = s; return 'V'; } -void -yyerror (char const *s) -{ printf ("%s\n", s); -} - int main (int argc, char **argv) { @@ -212,6 +205,7 @@ main (int argc, char **argv) return yyparse (); } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr2a.c glr-regr2a.y]], 0, [], [glr-regr2a.y: conflicts: 2 shift/reduce @@ -238,6 +232,7 @@ AT_CLEANUP AT_SETUP([Improper merging of GLR delayed action sets]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr3.y], [[/* Regression Test: Improper merging of GLR delayed action sets. */ /* Reported by M. Rosien */ @@ -246,10 +241,11 @@ AT_DATA_GRAMMAR([glr-regr3.y], #include #include #include +#include static int MergeRule (int x0, int x1); -static void yyerror (char const * s); -int yylex (void); +]AT_YYERROR_DECLARE[ +]AT_YYLEX_DECLARE[ #define RULE(x) (1 << (x)) @@ -290,15 +286,14 @@ NT6 : P1 NT1 O1 T3 P2 { $$ = RULE(11) | $2; } %merge %% -static int MergeRule (int x0, int x1) { +static int +MergeRule (int x0, int x1) +{ return x0 | x1; } +]AT_YYERROR_DEFINE[ -static void yyerror(char const * s) { - fprintf(stderr,"error: %s\n",s); -} - -FILE *input = NULL; +FILE *input = YY_NULL; int P[] = { P1, P2 }; int O[] = { O1, O2 }; @@ -307,8 +302,7 @@ int T[] = { T1, T2, T3, T4 }; int yylex (void) { char inp[3]; - if (feof (stdin)) - abort (); + assert (!feof (stdin)); if (fscanf (input, "%2s", inp) == EOF) return 0; switch (inp[0]) @@ -320,12 +314,15 @@ int yylex (void) return BAD_CHAR; } -int main(int argc, char* argv[]) { +int +main(int argc, char* argv[]) +{ input = stdin; if (argc == 2 && !(input = fopen (argv[1], "r"))) return 3; return yyparse (); } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr3.c glr-regr3.y]], 0, [], [glr-regr3.y: conflicts: 1 shift/reduce, 1 reduce/reduce @@ -347,6 +344,7 @@ AT_CLEANUP AT_SETUP([Duplicate representation of merged trees]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr4.y], [[ %union { char *ptr; } @@ -359,8 +357,8 @@ AT_DATA_GRAMMAR([glr-regr4.y], #include static char *merge (YYSTYPE, YYSTYPE); static char *make_value (char const *, char const *); - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ static char *ptrs[100]; static char **ptrs_next = ptrs; %} @@ -384,16 +382,8 @@ A2: 'a' { $$ = make_value ("A2", "'a'"); } ; B: 'a' { $$ = make_value ("B", "'a'"); } ; %% - -static int -yylex (void) -{ - static char const input[] = "a"; - static size_t toknum; - if (! (toknum < sizeof input)) - abort (); - return input[toknum++]; -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["a"])[ int main (void) @@ -423,13 +413,8 @@ merge (YYSTYPE s1, YYSTYPE s2) sprintf (value, format, s1.ptr, s2.ptr); return value; } - -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr4.c glr-regr4.y]], 0, [], [glr-regr4.y: conflicts: 1 reduce/reduce @@ -450,13 +435,14 @@ AT_CLEANUP AT_SETUP([User destructor for unresolved GLR semantic value]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr5.y], [[ %{ #include #include - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ enum { MAGIC_VALUE = -1057808125 }; /* originally chosen at random */ %} @@ -480,29 +466,15 @@ start: ; %% - -static int -yylex (void) -{ - static char const input[] = "a"; - static size_t toknum; - if (! (toknum < sizeof input)) - abort (); - return input[toknum++]; -} - -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - +]AT_YYLEX_DEFINE(["a"])[ +]AT_YYERROR_DEFINE[ int main (void) { return yyparse () != 1; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr5.c glr-regr5.y]], 0, [], [glr-regr5.y: conflicts: 1 reduce/reduce @@ -523,13 +495,14 @@ AT_CLEANUP AT_SETUP([User destructor after an error during a split parse]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr6.y], [[ %{ #include #include - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ %} %glr-parser @@ -545,29 +518,15 @@ AT_DATA_GRAMMAR([glr-regr6.y], start: 'a' | 'a' ; %% - -static int -yylex (void) -{ - static char const input[] = "a"; - static size_t toknum; - if (! (toknum < sizeof input)) - abort (); - return input[toknum++]; -} - -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["a"])[ int main (void) { return yyparse () != 1; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr6.c glr-regr6.y]], 0, [], [glr-regr6.y: conflicts: 1 reduce/reduce @@ -590,13 +549,14 @@ AT_CLEANUP AT_SETUP([Duplicated user destructor for lookahead]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr7.y], [[ %{ #include #include - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ #define YYSTACKEXPANDABLE 0 typedef struct count_node { int count; @@ -641,12 +601,7 @@ yylex (void) return 'a'; } -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - +]AT_YYERROR_DEFINE[ int main (void) { @@ -660,6 +615,7 @@ main (void) return status; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr7.c glr-regr7.y]], 0, [], [glr-regr7.y: conflicts: 2 reduce/reduce @@ -682,14 +638,14 @@ AT_CLEANUP AT_SETUP([Incorrectly initialized location for empty right-hand side in GLR]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr8.y], [[ %{ #include #include - static void yyerror (char const *); - static int yylex (void); - static void yyerror (char const *msg); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ %} %token T_CONSTANT @@ -723,12 +679,7 @@ OptSignalWord : /* empty */ %% -void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - +]AT_YYERROR_DEFINE[ static int lexIndex; int yylex (void) @@ -758,6 +709,7 @@ main (void) return 0; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr8.c glr-regr8.y]], 0, [], [glr-regr8.y: conflicts: 1 reduce/reduce @@ -780,13 +732,14 @@ AT_CLEANUP AT_SETUP([No users destructors if stack 0 deleted]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr9.y], [[ %{ # include # include - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ # define YYSTACKEXPANDABLE 0 static int tokens = 0; static int destructors = 0; @@ -822,12 +775,7 @@ yylex (void) return 'a'; } -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - +]AT_YYERROR_DEFINE[ int main (void) { @@ -841,6 +789,7 @@ main (void) return !exit_status; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr9.c glr-regr9.y]], 0, [], [glr-regr9.y: conflicts: 1 reduce/reduce @@ -860,13 +809,14 @@ AT_CLEANUP AT_SETUP([Corrupted semantic options if user action cuts parse]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr10.y], [[ %{ # include # include - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ #define GARBAGE_SIZE 50 static char garbage[GARBAGE_SIZE]; %} @@ -883,21 +833,8 @@ start: ; %% - -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - -static int -yylex (void) -{ - static int called; - if (called++) - abort (); - return 0; -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE[ int main (void) @@ -908,6 +845,7 @@ main (void) return yyparse (); } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr10.c glr-regr10.y]], 0, [], [glr-regr10.y: conflicts: 1 reduce/reduce @@ -925,12 +863,13 @@ AT_CLEANUP AT_SETUP([Undesirable destructors if user action cuts parse]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr11.y], [[ %{ # include - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ static int destructors = 0; # define USE(val) %} @@ -949,21 +888,8 @@ start: %% -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - -static int -yylex (void) -{ - static char const input[] = "a"; - static size_t toknum; - if (! (toknum < sizeof input)) - abort (); - return input[toknum++]; -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["a"])[ int main (void) @@ -977,6 +903,7 @@ main (void) return exit_status; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr11.c glr-regr11.y]], 0, [], [glr-regr11.y: conflicts: 1 reduce/reduce @@ -994,6 +921,7 @@ AT_CLEANUP AT_SETUP([Leaked semantic values if user action cuts parse]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr12.y], [[ %glr-parser @@ -1006,9 +934,10 @@ AT_DATA_GRAMMAR([glr-regr12.y], %{ # include +# include static int merge (YYSTYPE, YYSTYPE); - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ static int parent_rhs_before_value = 0; static int merged_value = 0; static int parent_rhs_after_value = 0; @@ -1068,23 +997,10 @@ merge (YYSTYPE s1, YYSTYPE s2) return dummy; } -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - -static int -yylex (void) -{ - static int const input[] = { PARENT_RHS_AFTER, 0 }; - static size_t toknum; - if (! (toknum < sizeof input / sizeof *input)) - abort (); - if (input[toknum] == PARENT_RHS_AFTER) - parent_rhs_after_value = 1; - return input[toknum++]; -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE([{ PARENT_RHS_AFTER, 0 }], + [if (res == PARENT_RHS_AFTER) + parent_rhs_after_value = 1;])[ int main (void) @@ -1108,6 +1024,7 @@ main (void) return exit_status; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr12.c glr-regr12.y]], 0, [], [glr-regr12.y: conflicts: 1 shift/reduce, 1 reduce/reduce @@ -1127,6 +1044,7 @@ AT_CLEANUP AT_SETUP([Incorrect lookahead during deterministic GLR]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr13.y], [[ /* Tests: @@ -1138,8 +1056,9 @@ AT_DATA_GRAMMAR([glr-regr13.y], %{ #include - static void yyerror (char const *); - static int yylex (void); + #include + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ static void print_lookahead (char const *); #define USE(value) %} @@ -1190,24 +1109,9 @@ change_lookahead: %% -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - -static int -yylex (void) -{ - static char const input[] = "ab"; - static size_t toknum; - if (! (toknum < sizeof input)) - abort (); - yylloc.first_line = yylloc.last_line = 1; - yylloc.first_column = yylloc.last_column = toknum + 1; - yylval.value = input[toknum] + 'A' - 'a'; - return input[toknum++]; -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["ab"], + [yylval.value = res + 'A' - 'a'])[ static void print_lookahead (char const *reduction) @@ -1237,6 +1141,7 @@ main (void) return yyparse (); } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr13.c glr-regr13.y]], 0, [], []) AT_COMPILE([glr-regr13]) @@ -1263,6 +1168,7 @@ AT_CLEANUP AT_SETUP([Incorrect lookahead during nondeterministic GLR]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr14.y], [[ /* Tests: @@ -1289,8 +1195,9 @@ AT_DATA_GRAMMAR([glr-regr14.y], %{ #include #include - static void yyerror (char const *); - static int yylex (void); + #include + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ static void print_lookahead (char const *); static char merge (union YYSTYPE, union YYSTYPE); #define USE(value) @@ -1399,19 +1306,13 @@ no_look: %% -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - +]AT_YYERROR_DEFINE[ static int yylex (void) { static char const input[] = "abcdddd"; static size_t toknum; - if (! (toknum < sizeof input)) - abort (); + assert (toknum < sizeof input); yylloc.first_line = yylloc.last_line = 1; yylloc.first_column = yylloc.last_column = toknum + 1; yylval.value = input[toknum] + 'A' - 'a'; @@ -1453,6 +1354,7 @@ main (void) return yyparse (); } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr14.c glr-regr14.y]], 0, [], [glr-regr14.y: conflicts: 3 reduce/reduce @@ -1483,6 +1385,7 @@ AT_CLEANUP AT_SETUP([Leaked semantic values when reporting ambiguity]) +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr15.y], [[ %glr-parser @@ -1490,8 +1393,8 @@ AT_DATA_GRAMMAR([glr-regr15.y], %{ # include - static void yyerror (char const *); - static int yylex (void); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ static int parent_rhs_before_value = 0; # define USE(val) %} @@ -1529,21 +1432,8 @@ ambiguity1: ; ambiguity2: ; %% - -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - -static int -yylex (void) -{ - static int called; - if (called++) - abort (); - return 0; -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE[ int main (void) @@ -1557,6 +1447,7 @@ main (void) return exit_status; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr15.c glr-regr15.y]], 0, [], [glr-regr15.y: conflicts: 2 reduce/reduce @@ -1575,6 +1466,8 @@ AT_CLEANUP ## ------------------------------------------------------------------------- ## AT_SETUP([Leaked lookahead after nondeterministic parse syntax error]) + +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr16.y], [[ %glr-parser @@ -1582,8 +1475,9 @@ AT_DATA_GRAMMAR([glr-regr16.y], %{ # include - static void yyerror (char const *); - static int yylex (void); +# include + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ static int lookahead_value = 0; # define USE(val) %} @@ -1596,23 +1490,10 @@ alt2: ; %% -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - -static int -yylex (void) -{ - static char const input[] = "ab"; - static size_t toknum; - if (! (toknum < sizeof input)) - abort (); - if (input[toknum] == 'b') - lookahead_value = 1; - return input[toknum++]; -} +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE(["ab"], + [if (res == 'b') + lookahead_value = 1])[ int main (void) @@ -1626,6 +1507,7 @@ main (void) return exit_status; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr16.c glr-regr16.y]], 0, [], [glr-regr16.y: conflicts: 1 reduce/reduce @@ -1644,6 +1526,9 @@ AT_CLEANUP ## ------------------------------------------------------------------------- ## AT_SETUP([Uninitialized location when reporting ambiguity]) + +AT_BISON_OPTION_PUSHDEFS([%glr-parser %locations %define api.pure]) + AT_DATA_GRAMMAR([glr-regr17.y], [[ %glr-parser @@ -1654,17 +1539,10 @@ AT_DATA_GRAMMAR([glr-regr17.y], %union { int dummy; } %{ - static void yyerror (YYLTYPE *, char const *); - static int yylex (YYSTYPE *, YYLTYPE *); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ %} -%initial-action { - @$.first_line = 1; - @$.first_column = 1; - @$.last_line = 1; - @$.last_column = 1; -} - %% /* Tests the case of an empty RHS that has inherited the location of the @@ -1685,21 +1563,15 @@ empty1: ; empty2: ; %% +# include -static void -yyerror (YYLTYPE *locp, char const *msg) -{ - fprintf (stderr, "Error at %d.%d-%d.%d: %s.\n", locp->first_line, - locp->first_column, locp->last_line, locp->last_column, msg); -} - +]AT_YYERROR_DEFINE[ static int yylex (YYSTYPE *lvalp, YYLTYPE *llocp) { static char const input[] = "ab"; static size_t toknum; - if (! (toknum < sizeof input)) - abort (); + assert (toknum < sizeof input); lvalp->dummy = 0; llocp->first_line = llocp->last_line = 2; llocp->first_column = toknum + 1; @@ -1713,6 +1585,7 @@ main (void) return yyparse () != 1; } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr17.c glr-regr17.y]], 0, [], [glr-regr17.y: conflicts: 3 reduce/reduce @@ -1720,7 +1593,7 @@ AT_BISON_CHECK([[-o glr-regr17.c glr-regr17.y]], 0, [], AT_COMPILE([glr-regr17]) AT_PARSER_CHECK([[./glr-regr17]], 0, [], -[Error at 1.1-2.3: syntax is ambiguous. +[1.1-2.2: syntax is ambiguous ]) AT_CLEANUP @@ -1731,13 +1604,15 @@ AT_CLEANUP ## -------------------------------------------------------------## AT_SETUP([Missed %merge type warnings when LHS type is declared later]) + +AT_BISON_OPTION_PUSHDEFS AT_DATA_GRAMMAR([glr-regr18.y], [[%glr-parser %{ #include - static void yyerror (char const *); - static int yylex (); + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ %} %union { @@ -1757,34 +1632,125 @@ sym3: %merge { $$ = 0; } ; %type sym3; %% - -static void -yyerror (char const *msg) -{ - fprintf (stderr, "%s\n", msg); -} - -static int -yylex () -{ - static int called; - if (called++) - abort (); - return 0; -} - +]AT_YYERROR_DEFINE[ +]AT_YYLEX_DEFINE[ int main (void) { return yyparse (); } ]]) +AT_BISON_OPTION_POPDEFS AT_BISON_CHECK([[-o glr-regr18.c glr-regr18.y]], 1, [], -[glr-regr18.y:26.18-24: result type clash on merge function `merge': != +[glr-regr18.y:26.18-24: result type clash on merge function 'merge': != glr-regr18.y:25.18-24: previous declaration -glr-regr18.y:27.13-19: result type clash on merge function `merge': != +glr-regr18.y:27.13-19: result type clash on merge function 'merge': != glr-regr18.y:26.18-24: previous declaration ]) AT_CLEANUP + + +## ------------------- ## +## Ambiguity reports. ## +## ------------------- ## + +AT_SETUP([Ambiguity reports]) + +AT_BISON_OPTION_PUSHDEFS +AT_DATA_GRAMMAR([input.y], +[[ +%{ + #include + #include + ]AT_YYERROR_DECLARE[ + ]AT_YYLEX_DECLARE[ +%} + +%debug +%glr-parser + +%% +start: + 'a' b 'c' d +| 'a' b 'c' d +; +b: 'b'; +d: /* nada. */; +%% +]AT_YYLEX_DEFINE(["abc"])[ +]AT_YYERROR_DEFINE[ +int +main (void) +{ + yydebug = 1; + return !!yyparse (); +} +]]) +AT_BISON_OPTION_POPDEFS + +AT_BISON_CHECK([[-o input.c input.y]], 0, [], +[input.y: conflicts: 1 reduce/reduce +]) +AT_COMPILE([input]) + +AT_PARSER_CHECK([[./input]], 1, [], +[Starting parse +Entering state 0 +Reading a token: Next token is token 'a' () +Shifting token 'a' () +Entering state 1 +Reading a token: Next token is token 'b' () +Shifting token 'b' () +Entering state 3 +Reducing stack 0 by rule 3 (line 25): + $1 = token 'b' () +-> $$ = nterm b () +Entering state 4 +Reading a token: Next token is token 'c' () +Shifting token 'c' () +Entering state 6 +Reducing stack 0 by rule 4 (line 26): +-> $$ = nterm d () +Entering state 7 +Reading a token: Now at end of input. +Stack 0 Entering state 7 +Now at end of input. +Splitting off stack 1 from 0. +Reduced stack 1 by rule #2; action deferred. Now in state 2. +Stack 1 Entering state 2 +Now at end of input. +Reduced stack 0 by rule #1; action deferred. Now in state 2. +Merging stack 0 into stack 1. +Stack 1 Entering state 2 +Now at end of input. +Removing dead stacks. +Rename stack 1 -> 0. +On stack 0, shifting token $end () +Stack 0 now in state #5 +Ambiguity detected. +Option 1, + start -> + 'a' + b + 'c' + d + +Option 2, + start -> + 'a' + b + 'c' + d + +syntax is ambiguous +Cleanup: popping token $end () +Cleanup: popping unresolved nterm start () +Cleanup: popping nterm d () +Cleanup: popping token 'c' () +Cleanup: popping nterm b () +Cleanup: popping token 'a' () +]) + +AT_CLEANUP