AT_BANNER([[Regression tests.]])
+
+## ------------------- ##
+## %nonassoc and eof. ##
+## ------------------- ##
+
+AT_SETUP([%nonassoc and eof])
+
+AT_DATA([input.y],
+[[
+%{
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <error.h>
+#define YYERROR_VERBOSE 1
+#define yyerror(Msg) \
+do { \
+ fprintf (stderr, "%s\n", Msg); \
+ exit (1); \
+} while (0)
+
+/* The current argument. */
+static const char *input = NULL;
+
+static int
+yylex (void)
+{
+ /* No token stands for end of file. */
+ if (input && *input)
+ return *input++;
+ else
+ return 0;
+}
+
+%}
+
+%nonassoc '<' '>'
+
+%%
+expr: expr '<' expr
+ | expr '>' expr
+ | '0'
+ ;
+%%
+int
+main (int argc, const char *argv[])
+{
+ if (argc > 1)
+ input = argv[1];
+ return yyparse ();
+}
+]])
+
+# Specify the output files to avoid problems on different file systems.
+AT_CHECK([bison input.y -o input.c])
+AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -o input], 0, [], [ignore])
+
+AT_CHECK([input '0<0'])
+# FIXME: This is an actual bug, but a new one, in the sense that
+# no one has ever spotted it! The messages are *wrong*: there should
+# be nothing there, it should be expected eof.
+AT_CHECK([input '0<0<0'], [1], [],
+ [parse error, unexpected '<', expecting '<' or '>'
+])
+
+AT_CHECK([input '0>0'])
+AT_CHECK([input '0>0>0'], [1], [],
+ [parse error, unexpected '>', expecting '<' or '>'
+])
+
+AT_CHECK([input '0<0>0'], [1], [],
+ [parse error, unexpected '>', expecting '<' or '>'
+])
+
+AT_CLEANUP
+
+## ---------------- ##
+## Braces parsing. ##
+## ---------------- ##
+
+
+AT_SETUP([braces parsing])
+
+AT_DATA([input.y],
+[[/* Bison used to swallow the character after `}'. */
+
+%%
+exp: { tests = {{{{{{{{{{}}}}}}}}}}; }
+%%
+]])
+
+AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
+
+AT_CHECK([fgrep 'tests = {{{{{{{{{{}}}}}}}}}};' input.c], 0, [ignore])
+
+AT_CLEANUP
+
+
## ------------------ ##
## Duplicate string. ##
## ------------------ ##
AT_SETUP([Duplicate string])
-AT_DATA([duplicate.y],
+AT_DATA([input.y],
[[/* `Bison -v' used to dump core when two tokens are defined with the same
string, as LE and GE below. */
%%
]])
-AT_CHECK([bison -v duplicate.y -o duplicate.c], 0, ignore, ignore)
+AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
-AT_CLEANUP([duplicate.*])
+AT_CLEANUP
+## ------------------------- ##
+## Unresolved SR Conflicts. ##
+## ------------------------- ##
-## ---------------------- ##
-## Mixing %token styles. ##
-## ---------------------- ##
+AT_SETUP([Unresolved SR Conflicts])
+AT_DATA([input.y],
+[[%token NUM OP
+%%
+exp: exp OP exp | NUM;
+]])
-AT_SETUP([Mixing %token styles])
+AT_CHECK([bison input.y -o input.c -v], 0, [],
+[input.y contains 1 shift/reduce conflict.
+])
+
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[State 5 contains 1 shift/reduce conflict.
+
+
+Grammar
+
+ Number, Line, Rule
+ 0 3 $axiom -> exp $
+ 1 3 exp -> exp OP exp
+ 2 3 exp -> NUM
+
+
+Terminals, with rules where they appear
+
+$ (0) 0
+error (256)
+NUM (257) 2
+OP (258) 1
+
+
+Nonterminals, with rules where they appear
+
+$axiom (5)
+ on left: 0
+exp (6)
+ on left: 1 2, on right: 0 1
+
+
+state 0
+
+ NUM shift, and go to state 1
+
+ exp go to state 2
+
+
+
+state 1
+
+ exp -> NUM . (rule 2)
+
+ $default reduce using rule 2 (exp)
+
+
+
+state 2
+
+ $axiom -> exp . $ (rule 0)
+ exp -> exp . OP exp (rule 1)
+
+ $ shift, and go to state 3
+ OP shift, and go to state 4
+
+
+
+state 3
+
+ $axiom -> exp $ . (rule 0)
+
+ $default accept
+
+
+state 4
+
+ exp -> exp OP . exp (rule 1)
+
+ NUM shift, and go to state 1
+
+ exp go to state 5
+
+
+
+state 5
+
+ exp -> exp . OP exp (rule 1)
+ exp -> exp OP exp . (rule 1)
+
+ OP shift, and go to state 4
+
+ OP [reduce using rule 1 (exp)]
+ $default reduce using rule 1 (exp)
+
+
+
+]])
+
+AT_CLEANUP
+
+
+## --------------------- ##
+## Solved SR Conflicts. ##
+## --------------------- ##
+
+AT_SETUP([Solved SR Conflicts])
-# Taken from the documentation.
AT_DATA([input.y],
-[[%token <operator> OR "||"
-%token <operator> LE 134 "<="
-%left OR "<="
-%%
-exp: ;
+[[%token NUM OP
+%right OP
%%
+exp: exp OP exp | NUM;
]])
-AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
+AT_CHECK([bison input.y -o input.c -v], 0, [], [])
-AT_CLEANUP([input.*])
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[Conflict in state 5 between rule 2 and token OP resolved as shift.
+Grammar
-## ---------------------- ##
-## %union and --defines. ##
-## ---------------------- ##
+ Number, Line, Rule
+ 0 4 $axiom -> exp $
+ 1 4 exp -> exp OP exp
+ 2 4 exp -> NUM
+
+
+Terminals, with rules where they appear
+
+$ (0) 0
+error (256)
+NUM (257) 2
+OP (258) 1
+
+
+Nonterminals, with rules where they appear
+
+$axiom (5)
+ on left: 0
+exp (6)
+ on left: 1 2, on right: 0 1
+
+
+state 0
+
+ NUM shift, and go to state 1
+
+ exp go to state 2
-AT_SETUP([%union and --defines])
-AT_DATA([union.y],
-[%union
+state 1
+
+ exp -> NUM . (rule 2)
+
+ $default reduce using rule 2 (exp)
+
+
+
+state 2
+
+ $axiom -> exp . $ (rule 0)
+ exp -> exp . OP exp (rule 1)
+
+ $ shift, and go to state 3
+ OP shift, and go to state 4
+
+
+
+state 3
+
+ $axiom -> exp $ . (rule 0)
+
+ $default accept
+
+
+state 4
+
+ exp -> exp OP . exp (rule 1)
+
+ NUM shift, and go to state 1
+
+ exp go to state 5
+
+
+
+state 5
+
+ exp -> exp . OP exp (rule 1)
+ exp -> exp OP exp . (rule 1)
+
+ OP shift, and go to state 4
+
+ $default reduce using rule 1 (exp)
+
+
+
+]])
+
+AT_CLEANUP
+
+
+
+
+## ------------------- ##
+## Rule Line Numbers. ##
+## ------------------- ##
+
+AT_SETUP([Rule Line Numbers])
+
+AT_DATA([input.y],
+[[%%
+expr:
+'a'
+
{
- int integer;
- char *string ;
+
+}
+
+'b'
+
+{
+
}
-%%
-exp: {};
-])
-AT_CHECK([bison --defines union.y])
+|
-AT_CLEANUP([union.*])
+{
-## --------------------------------------- ##
-## Duplicate '/' in C comments in %union ##
-## --------------------------------------- ##
+}
-AT_SETUP([%union and C comments])
+'c'
-AT_DATA([union-comment.y],
-[%union
{
- /* The int. */ int integer;
- /* The string. */ char *string ;
+
}
-%%
-exp: {};
-])
+]])
+
+AT_CHECK([bison input.y -o input.c -v], 0, [], [])
+
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[Grammar
+
+ Number, Line, Rule
+ 0 2 $axiom -> expr $
+ 1 2 @1 -> /* empty */
+ 2 2 expr -> 'a' @1 'b'
+ 3 15 @2 -> /* empty */
+ 4 15 expr -> @2 'c'
+
+
+Terminals, with rules where they appear
+
+$ (0) 0
+'a' (97) 2
+'b' (98) 2
+'c' (99) 4
+error (256)
+
+
+Nonterminals, with rules where they appear
+
+$axiom (6)
+ on left: 0
+expr (7)
+ on left: 2 4, on right: 0
+@1 (8)
+ on left: 1, on right: 2
+@2 (9)
+ on left: 3, on right: 4
+
+
+state 0
+
+ 'a' shift, and go to state 1
+
+ $default reduce using rule 3 (@2)
+
+ expr go to state 2
+ @2 go to state 3
+
+
+
+state 1
+
+ expr -> 'a' . @1 'b' (rule 2)
+
+ $default reduce using rule 1 (@1)
+
+ @1 go to state 4
+
+
+
+state 2
+
+ $axiom -> expr . $ (rule 0)
+
+ $ shift, and go to state 5
+
+
+
+state 3
-AT_CHECK([bison union-comment.y])
-AT_CHECK([fgrep '//*' union-comment.tab.c], [1], [])
+ expr -> @2 . 'c' (rule 4)
-AT_CLEANUP([union-comment.*])
+ 'c' shift, and go to state 6
+
+
+
+state 4
+
+ expr -> 'a' @1 . 'b' (rule 2)
+
+ 'b' shift, and go to state 7
+
+
+
+state 5
+
+ $axiom -> expr $ . (rule 0)
+
+ $default accept
+
+
+state 6
+
+ expr -> @2 'c' . (rule 4)
+
+ $default reduce using rule 4 (expr)
+
+
+
+state 7
+
+ expr -> 'a' @1 'b' . (rule 2)
+
+ $default reduce using rule 2 (expr)
+
+
+
+]])
+
+AT_CLEANUP
+
+
+
+## -------------------- ##
+## %expect not enough. ##
+## -------------------- ##
+
+AT_SETUP([%expect not enough])
+
+AT_DATA([input.y],
+[[%token NUM OP
+%expect 0
+%%
+exp: exp OP exp | NUM;
+]])
+
+AT_CHECK([bison input.y -o input.c], 1, [],
+[input.y contains 1 shift/reduce conflict.
+expected 0 shift/reduce conflicts
+])
+AT_CLEANUP
## --------------- ##
-## invalid input. ##
+## %expect right. ##
## --------------- ##
+AT_SETUP([%expect right])
-AT_SETUP([Invalid input])
+AT_DATA([input.y],
+[[%token NUM OP
+%expect 1
+%%
+exp: exp OP exp | NUM;
+]])
+
+AT_CHECK([bison input.y -o input.c], 0)
+AT_CLEANUP
+
+
+## ------------------ ##
+## %expect too much. ##
+## ------------------ ##
+
+AT_SETUP([%expect too much])
AT_DATA([input.y],
-[[%%
-?
+[[%token NUM OP
+%expect 2
+%%
+exp: exp OP exp | NUM;
]])
-AT_CHECK([bison input.y], [1], [],
-[input.y:2: invalid input: `?'
-input.y:3: fatal error: no rules in the input grammar
+AT_CHECK([bison input.y -o input.c], 1, [],
+[input.y contains 1 shift/reduce conflict.
+expected 2 shift/reduce conflicts
])
+AT_CLEANUP
+
+
+## ---------------------- ##
+## Mixing %token styles. ##
+## ---------------------- ##
+
+
+AT_SETUP([Mixing %token styles])
+
+# Taken from the documentation.
+AT_DATA([input.y],
+[[%token <operator> OR "||"
+%token <operator> LE 134 "<="
+%left OR "<="
+%%
+exp: ;
+%%
+]])
+
+AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
AT_CLEANUP
-## ----------------- ##
-## Invalid input 1. ##
-## ----------------- ##
+
+## ---------------- ##
+## Invalid inputs. ##
+## ---------------- ##
-AT_SETUP([Invalid input: 1])
+AT_SETUP([Invalid inputs])
AT_DATA([input.y],
[[%%
?
+default: 'a' }
+%{
+%&
+%a
+%-
]])
AT_CHECK([bison input.y], [1], [],
-[input.y:2: invalid input: `?'
-input.y:3: fatal error: no rules in the input grammar
-])
+[[input.y:2: invalid input: `?'
+input.y:3: invalid input: `}'
+input.y:4: invalid input: `%{'
+input.y:5: invalid input: `%&'
+input.y:6: invalid input: `%a'
+input.y:7: invalid input: `%-'
+]])
AT_CLEANUP
-## ----------------- ##
-## Invalid input 2. ##
-## ----------------- ##
+## -------------------- ##
+## Invalid %directive. ##
+## -------------------- ##
-AT_SETUP([Invalid input: 2])
+
+AT_SETUP([Invalid %directive])
AT_DATA([input.y],
-[[%%
-default: 'a' }
+[[%invalid
]])
AT_CHECK([bison input.y], [1], [],
-[input.y:2: invalid input: `}'
-])
+[[input.y:1: unrecognized: %invalid
+input.y:1: Skipping to next %
+input.y:2: fatal error: no input grammar
+]])
AT_CLEANUP
-## --------------------- ##
-## Invalid CPP headers. ##
-## --------------------- ##
+## -------------- ##
+## Web2c Report. ##
+## -------------- ##
-# AT_TEST_CPP_GUARD_H([INPUT-FILE-BASE)
-# -------------------------------------
-m4_define([AT_TEST_CPP_GUARD_H],
-[AT_SETUP([Invalid CPP guards: $1])
+# The generation of the reduction was once wrong in Bison, and made it
+# miss some reductions. In the following test case, the reduction on
+# `undef_id_tok' in state 1 was missing. This is stripped down from
+# the actual web2c.y.
-# possibly create and nuke inner directories.
-m4_bmatch([$1], [[/]],
-[dirname=`AS_DIRNAME([$1])`
-AS_MKDIR_P([$dirname])
-AT_CLEANUP_FILES([$dirname])])
+AT_SETUP([Web2c Report])
-AT_DATA([$1.y],
-[%%
-dummy:
-])
+AT_DATA([input.y],
+[[%token undef_id_tok const_id_tok
+
+%start CONST_DEC_PART
+\f
+%%
+CONST_DEC_PART:
+ CONST_DEC_LIST
+ ;
+
+CONST_DEC_LIST:
+ CONST_DEC
+ | CONST_DEC_LIST CONST_DEC
+ ;
+
+CONST_DEC:
+ { } undef_id_tok '=' const_id_tok ';'
+ ;
+%%
-AT_CHECK([bison --defines=$1.h $1.y])
+]])
-# CPP should be happy with it.
-AT_CHECK([$CC -E $1.h], 0, [ignore])
+AT_CHECK([bison -v input.y])
+
+AT_CHECK([sed -n 's/ *$//;/^$/!p' input.output], 0,
+[[Grammar
+ Number, Line, Rule
+ 0 6 $axiom -> CONST_DEC_PART $
+ 1 6 CONST_DEC_PART -> CONST_DEC_LIST
+ 2 10 CONST_DEC_LIST -> CONST_DEC
+ 3 12 CONST_DEC_LIST -> CONST_DEC_LIST CONST_DEC
+ 4 15 @1 -> /* empty */
+ 5 15 CONST_DEC -> @1 undef_id_tok '=' const_id_tok ';'
+Terminals, with rules where they appear
+$ (0) 0
+';' (59) 5
+'=' (61) 5
+error (256)
+undef_id_tok (257) 5
+const_id_tok (258) 5
+Nonterminals, with rules where they appear
+$axiom (7)
+ on left: 0
+CONST_DEC_PART (8)
+ on left: 1, on right: 0
+CONST_DEC_LIST (9)
+ on left: 2 3, on right: 1 3
+CONST_DEC (10)
+ on left: 5, on right: 2 3
+@1 (11)
+ on left: 4, on right: 5
+state 0
+ $default reduce using rule 4 (@1)
+ CONST_DEC_PART go to state 1
+ CONST_DEC_LIST go to state 2
+ CONST_DEC go to state 3
+ @1 go to state 4
+state 1
+ $axiom -> CONST_DEC_PART . $ (rule 0)
+ $ shift, and go to state 5
+state 2
+ CONST_DEC_PART -> CONST_DEC_LIST . (rule 1)
+ CONST_DEC_LIST -> CONST_DEC_LIST . CONST_DEC (rule 3)
+ undef_id_tok reduce using rule 4 (@1)
+ $default reduce using rule 1 (CONST_DEC_PART)
+ CONST_DEC go to state 6
+ @1 go to state 4
+state 3
+ CONST_DEC_LIST -> CONST_DEC . (rule 2)
+ $default reduce using rule 2 (CONST_DEC_LIST)
+state 4
+ CONST_DEC -> @1 . undef_id_tok '=' const_id_tok ';' (rule 5)
+ undef_id_tok shift, and go to state 7
+state 5
+ $axiom -> CONST_DEC_PART $ . (rule 0)
+ $default accept
+state 6
+ CONST_DEC_LIST -> CONST_DEC_LIST CONST_DEC . (rule 3)
+ $default reduce using rule 3 (CONST_DEC_LIST)
+state 7
+ CONST_DEC -> @1 undef_id_tok . '=' const_id_tok ';' (rule 5)
+ '=' shift, and go to state 8
+state 8
+ CONST_DEC -> @1 undef_id_tok '=' . const_id_tok ';' (rule 5)
+ const_id_tok shift, and go to state 9
+state 9
+ CONST_DEC -> @1 undef_id_tok '=' const_id_tok . ';' (rule 5)
+ ';' shift, and go to state 10
+state 10
+ CONST_DEC -> @1 undef_id_tok '=' const_id_tok ';' . (rule 5)
+ $default reduce using rule 5 (CONST_DEC)
+]])
-AT_CLEANUP($1.*)
-])
+AT_CLEANUP
+
+
+## --------------- ##
+## Web2c Actions. ##
+## --------------- ##
-AT_TEST_CPP_GUARD_H([input/input])
-AT_TEST_CPP_GUARD_H([9foo])
+# The generation of the mapping `state -> action' was once wrong in
+# extremely specific situations. web2c.y exhibits this situation.
+# Below is a stripped version of the grammar. It looks like one can
+# simplify it further, but just don't: it is tuned to exhibit a bug,
+# which disapears when applying sane grammar transformations.
+#
+# It used to be wrong on yydefact only:
+#
+# static const short yydefact[] =
+# {
+# - 2, 0, 1, 0, 0, 2, 3, 2, 5, 4,
+# + 2, 0, 1, 0, 0, 0, 3, 2, 5, 4,
+# 0, 0
+# };
+#
+# but let's check all the tables.
+
+
+AT_SETUP([Web2c Actions])
+
+AT_DATA([input.y],
+[[%%
+statement: struct_stat;
+struct_stat: /* empty. */ | if else;
+if: "if" "const" "then" statement;
+else: "else" statement;
+%%
+]])
+
+AT_CHECK([bison -v input.y -o input.c])
+
+# Check only the tables. We don't use --no-parser, because it is
+# still to be implemented in the experimental branch of Bison.
+AT_CHECK([[sed -n 's/ *$//;/^static const.*\[\] =/,/^}/p' input.c]], 0,
+[[static const char yytranslate[] =
+{
+ 0, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 1, 3, 4, 5,
+ 6
+};
+static const short yyprhs[] =
+{
+ 0, 0, 3, 5, 6, 9, 14
+};
+static const short yyrhs[] =
+{
+ 8, 0, -1, 9, -1, -1, 10, 11, -1, 3,
+ 4, 5, 8, -1, 6, 8, -1
+};
+static const short yyrline[] =
+{
+ 0, 2, 2, 3, 3, 4, 5
+};
+static const char *const yytname[] =
+{
+ "$", "error", "$undefined.", "\"if\"", "\"const\"", "\"then\"",
+ "\"else\"", "$axiom", "statement", "struct_stat", "if", "else", NULL
+};
+static const short yytoknum[] =
+{
+ 0, 256, 2, 257, 258, 259, 260, -1
+};
+static const short yyr1[] =
+{
+ 0, 7, 8, 9, 9, 10, 11
+};
+static const short yyr2[] =
+{
+ 0, 2, 1, 0, 2, 4, 2
+};
+static const short yydefact[] =
+{
+ 3, 0, 0, 2, 0, 0, 0, 3, 4, 3,
+ 6, 5
+};
+static const short yydefgoto[] =
+{
+ -1, 2, 3, 4, 8
+};
+static const short yypact[] =
+{
+ -2, -1, 4,-32768, 0, 2,-32768, -2,-32768, -2,
+ -32768,-32768
+};
+static const short yypgoto[] =
+{
+ -32768, -7,-32768,-32768,-32768
+};
+static const short yytable[] =
+{
+ 10, 1, 11, 5, 6, 0, 7, 9
+};
+static const short yycheck[] =
+{
+ 7, 3, 9, 4, 0, -1, 6, 5
+};
+]])
+
+AT_CLEANUP
projects / bison.git / blobdiff