X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/c95f2d781ff015295559f273075a4a930866d605..7431029172f190eb3c5c63a8828e723276551ca6:/tests/regression.at

diff --git a/tests/regression.at b/tests/regression.at
index 8a004831..3620200a 100644
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -1,10 +1,82 @@
-#                                                        -*- Autoconf -*-
+# Bison Regressions.                               -*- Autotest -*-
+# Copyright (C) 2001, 2002 Free Software Foundation, Inc.
 
-cat <<EOF
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
 
-Regression tests.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
 
-EOF
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+AT_BANNER([[Regression tests.]])
+
+
+## ------------------------- ##
+## Early token definitions.  ##
+## ------------------------- ##
+
+
+AT_SETUP([Early token definitions])
+
+# Found in GCJ: they expect the tokens to be defined before the user
+# prologue, so that they can use the token definitions in it.
+
+AT_DATA([input.y],
+[[%{
+void yyerror (const char *s);
+int yylex (void);
+%}
+
+%union
+{
+  int val;
+};
+%{
+#ifndef MY_TOKEN
+# error "MY_TOKEN not defined."
+#endif
+%}
+%token MY_TOKEN
+%%
+exp: MY_TOKEN;
+%%
+]])
+
+AT_CHECK([bison input.y -o input.c])
+AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -c])
+
+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])
+
+AT_CHECK([fgrep 'tests = {{{{{{{{{{}}}}}}}}}};' input.c], 0, [ignore])
+
+AT_CLEANUP
 
 
 ## ------------------ ##
@@ -14,7 +86,7 @@ EOF
 
 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. */
 
@@ -27,29 +99,490 @@ exp: '(' exp ')' | NUM ;
 %%
 ]])
 
-AT_CHECK([bison -v duplicate.y -o duplicate.c], 0, ignore, ignore)
+AT_CHECK([bison -v input.y -o input.c], 0, [],
+[[input.y:6: warning: symbol `"<="' used more than once as a literal string
+]])
 
-AT_CLEANUP([duplicate.*])
+AT_CLEANUP
 
 
+## ------------------- ##
+## Rule Line Numbers.  ##
+## ------------------- ##
 
-## ---------------------- ##
-## %union and --defines.  ##
-## ---------------------- ##
+AT_SETUP([Rule Line Numbers])
 
+AT_KEYWORDS([report])
 
-AT_SETUP([%union and --defines])
+AT_DATA([input.y],
+[[%%
+expr:
+'a'
 
-AT_DATA([union.y],
-[%union
 {
-  int   integer;
-  char *string ;
+
 }
+
+'b'
+
+{
+
+}
+
+|
+
+
+{
+
+
+}
+
+'c'
+
+{
+
+};
+]])
+
+AT_CHECK([bison input.y -o input.c -v])
+
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[Grammar
+
+    0 $axiom: expr $
+
+    1 @1: /* empty */
+
+    2 expr: 'a' @1 'b'
+
+    3 @2: /* empty */
+
+    4 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
+
+    $axiom  ->  . expr $   (rule 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
+
+    expr  ->  @2 . 'c'   (rule 4)
+
+    '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
+
+
+
+## ---------------------- ##
+## 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: ;
 %%
-exp: {};
-])
+]])
+
+AT_CHECK([bison -v input.y -o input.c])
+
+AT_CLEANUP
+
+
+
+## ---------------- ##
+## Invalid inputs.  ##
+## ---------------- ##
+
+
+AT_SETUP([Invalid inputs])
+
+AT_DATA([input.y],
+[[%%
+?
+default: 'a' }
+%&
+%a
+%-
+%{
+]])
+
+AT_CHECK([bison input.y], [1], [],
+[[input.y:2.1: invalid character: `?'
+input.y:3.14: invalid character: `}'
+input.y:4.1: invalid character: `%'
+input.y:4.2: invalid character: `&'
+input.y:5.1: invalid character: `%'
+input.y:6.1: invalid character: `%'
+input.y:6.2: invalid character: `-'
+input.y:7.1-8.0: unexpected end of file in a prologue
+input.y:7.1-8.0: parse error, unexpected PROLOGUE, expecting ";" or "|"
+input.y:5.2: symbol a is used, but is not defined as a token and has no rules
+]])
+
+AT_CLEANUP
+
+
+
+## ------------------- ##
+## Token definitions.  ##
+## ------------------- ##
+
+
+AT_SETUP([Token definitions])
+
+# Bison managed, when fed with `%token 'f' "f"' to #define 'f'!
+AT_DATA([input.y],
+[%{
+void yyerror (const char *s);
+int yylex (void);
+%}
+[%token YYEOF 0 "end of file"
+%token 'a' "a"
+%token b "b"
+%token c 'c'
+%token 'd' d
+%%
+exp: "a";
+]])
 
-AT_CHECK([bison --defines union.y])
+AT_CHECK([bison input.y -o input.c])
+AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -c])
+AT_CLEANUP
+
+
+
+## -------------- ##
+## Web2c Report.  ##
+## -------------- ##
+
+# The generation of the reduction was once wrong in Bison, and made it
+# miss some reductions.  In the following test case, the reduction on
+# `undef_id_tok' in state 1 was missing.  This is stripped down from
+# the actual web2c.y.
+
+AT_SETUP([Web2c Report])
+
+AT_KEYWORDS([report])
+
+AT_DATA([input.y],
+[[%token	undef_id_tok const_id_tok
+
+%start CONST_DEC_PART
+
+%%
+CONST_DEC_PART:
+         CONST_DEC_LIST
+        ;
+
+CONST_DEC_LIST:
+	  CONST_DEC
+        | CONST_DEC_LIST CONST_DEC
+        ;
+
+CONST_DEC:
+	  { } undef_id_tok '=' const_id_tok ';'
+        ;
+%%
+
+]])
+
+AT_CHECK([bison -v input.y])
+
+AT_CHECK([sed -n 's/  *$//;/^$/!p' input.output], 0,
+[[Grammar
+    0 $axiom: CONST_DEC_PART $
+    1 CONST_DEC_PART: CONST_DEC_LIST
+    2 CONST_DEC_LIST: CONST_DEC
+    3               | CONST_DEC_LIST CONST_DEC
+    4 @1: /* empty */
+    5 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 (258) 5
+const_id_tok (259) 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
+    $axiom  ->  . CONST_DEC_PART $   (rule 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)
+    $default	reduce using rule 5 (CONST_DEC)
+]])
+
+AT_CLEANUP
+
+
+## --------------- ##
+## Web2c Actions.  ##
+## --------------- ##
+
+# The generation of the mapping `state -> action' was once wrong in
+# extremely specific situations.  web2c.y exhibits this situation.
+# Below is a stripped version of the grammar.  It looks like one can
+# simplify it further, but just don't: it is tuned to exhibit a bug,
+# which disapears when applying sane grammar transformations.
+#
+# It used to be wrong on yydefact only:
+#
+# static const short yydefact[] =
+#  {
+# -       2,     0,     1,     0,     0,     2,     3,     2,     5,     4,
+# +       2,     0,     1,     0,     0,     0,     3,     2,     5,     4,
+#         0,     0
+#  };
+#
+# but let's check all the tables.
+
+
+AT_SETUP([Web2c Actions])
+
+AT_KEYWORDS([report])
+
+AT_DATA([input.y],
+[[%%
+statement:  struct_stat;
+struct_stat:  /* empty. */ | if else;
+if: "if" "const" "then" statement;
+else: "else" statement;
+%%
+]])
+
+AT_CHECK([bison -v input.y -o input.c])
+
+# Check only the tables.  We don't use --no-parser, because it is
+# still to be implemented in the experimental branch of Bison.
+AT_CHECK([[sed -n 's/  *$//;/^static const.*\[\] =/,/^}/p' input.c]], 0,
+[[static const unsigned 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,     2,     3,     4,
+       5,     6
+};
+static const unsigned char yyprhs[] =
+{
+       0,     0,     3,     5,     6,     9,    14
+};
+static const signed char yyrhs[] =
+{
+       8,     0,    -1,     9,    -1,    -1,    10,    11,    -1,     3,
+       4,     5,     8,    -1,     6,     8,    -1
+};
+static const unsigned char 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", 0
+};
+static const short yytoknum[] =
+{
+       0,   256,   257,   258,   259,   260,   261,    -1
+};
+static const unsigned char yyr1[] =
+{
+       0,     7,     8,     9,     9,    10,    11
+};
+static const unsigned char 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
+};
+static const unsigned char yystos[] =
+{
+       0,     3,     8,     9,    10,     4,     0,     6,    11,     5,
+       8,     8
+};
+]])
 
-AT_CLEANUP([union.*])
+AT_CLEANUP