X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ca6f187f641ed57054618d8cddcb1abbb591ca8c..c1f8f16a9b467565fbef7e8c85f0aad8bfad6bde:/tests/actions.at?ds=sidebyside

diff --git a/tests/actions.at b/tests/actions.at
index d97e9164..40940089 100644
--- a/tests/actions.at
+++ b/tests/actions.at
@@ -82,151 +82,6 @@ AT_CLEANUP
 
 
 
-## ---------------------- ##
-## Actions after errors.  ##
-## ---------------------- ##
-
-AT_SETUP([Actions after errors])
-
-
-
-AT_DATA_GRAMMAR([[input.y]],
-[[%{
-#include <stdio.h>
-#include <stdlib.h>
-
-static int yylex (void);
-static void yyerror (char const *);
-
-#define YYDEBUG 1
-%}
-%union { int ival; }
-%type <ival> 'x' ';' thing line input
-
-%%
-input:
-  /* Nothing. */
-    {
-      $$ = 0;
-      printf ("input (%d): /* Nothing */\n", $$);
-    }
-| 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 ';'
-    {
-      $$ = $1;
-      printf ("line (%d): thing (%d) thing (%d) thing (%d) ';' (%d)\n",
-	      $$, $1, $2, $3, $4);
-    }
-| thing thing ';'
-    {
-      $$ = $1;
-      printf ("line (%d): thing (%d) thing (%d) ';' (%d)\n", $$, $1, $2, $3);
-    }
-| thing ';'
-    {
-      $$ = $1;
-      printf ("line (%d): thing (%d) ';' (%d)\n", $$, $1, $2);
-    }
-| error ';'
-    {
-      $$ = -1;
-      printf ("line (%d): error ';' (%d)\n", $$, $2);
-    }
-;
-
-thing:
-  'x'
-    {
-      $$ = $1;
-      printf ("thing (%d): 'x' (%d)\n", $$, $1);
-    }
-;
-%%
-static size_t counter;
-
-static int
-yylex (void)
-{
-  static char const input[] =
-    {
-      /* Exercise 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', ';',
-      'y'
-    };
-
-  if (counter < sizeof input)
-    {
-       yylval.ival = counter;
-       printf ("sending: '%c' (%d)\n", input[counter], yylval.ival);
-       return input[counter++];
-    }
-  else
-    {
-      printf ("sending: EOF\n");
-      return EOF;
-    }
-}
-
-static void
-yyerror (char const *msg)
-{
-  printf ("%lu: %s\n", (unsigned long int) counter, msg);
-}
-
-int
-main (void)
-{
-  yydebug = !!getenv ("YYDEBUG");
-  return yyparse ();
-}
-]])
-
-AT_CHECK([bison -o input.c input.y])
-AT_COMPILE([input])
-AT_PARSER_CHECK([./input], 1,
-[[sending: 'x' (0)
-thing (0): 'x' (0)
-sending: 'x' (1)
-thing (1): 'x' (1)
-sending: 'x' (2)
-thing (2): 'x' (2)
-sending: 'x' (3)
-4: syntax error
-sending: 'x' (4)
-sending: 'x' (5)
-sending: ';' (6)
-line (-1): error ';' (6)
-sending: 'x' (7)
-thing (7): 'x' (7)
-sending: 'x' (8)
-thing (8): 'x' (8)
-sending: ';' (9)
-line (7): thing (7) thing (8) ';' (9)
-sending: 'x' (10)
-thing (10): 'x' (10)
-sending: ';' (11)
-line (10): thing (10) ';' (11)
-sending: 'y' (12)
-13: syntax error
-sending: EOF
-]])
-
-AT_CLEANUP
-
 
 
 ## ---------------- ##
@@ -304,45 +159,47 @@ AT_CLEANUP
 ## Printers and Destructors.  ##
 ## -------------------------- ##
 
-# _AT_CHECK_PRINTER_AND_DESTRUCTOR($1, $2, $3, $4, BISON-DIRECTIVE)
-# -----------------------------------------------------------------
+# _AT_CHECK_PRINTER_AND_DESTRUCTOR($1, $2, $3, $4, BISON-DIRECTIVE, UNION-FLAG)
+# -----------------------------------------------------------------------------
 m4_define([_AT_CHECK_PRINTER_AND_DESTRUCTOR],
-[m4_if([$1$2$3], $[1]$[2]$[3], [],
+[# Make sure complex $n work.
+m4_if([$1$2$3], $[1]$[2]$[3], [],
        [m4_fatal([$0: Invalid arguments: $@])])dnl
 
-AT_SETUP([Printers and Destructors: $5])
-
-# Make sure complex $n work.
-
+# Be sure to pass all the %directives to this macro to have correct
+# helping macros.  So don't put any directly in the Bison file.
 AT_BISON_OPTION_PUSHDEFS([$5])
 AT_DATA_GRAMMAR([[input.y]],
-[[$5
-%{
+[[%{
 #include <stdio.h>
 #include <stdlib.h>
+#include <assert.h>
 ]AT_LALR1_CC_IF(
   [#define RANGE(Location) (Location).begin.line, (Location).end.line],
   [#define RANGE(Location) (Location).first_line, (Location).last_line])
 [%}
-%error-verbose
-%debug
-%verbose
-%locations
-%union
+
+$5]
+m4_ifval([$6], [%union
 {
   int ival;
-}
-
+}])
+[
 %{
-]AT_LALR1_CC_IF([typedef yy::Location YYLTYPE;])
+]AT_LALR1_CC_IF([typedef yy::Location YYLTYPE;
+                m4_ifval([$6], , [#define YYSTYPE int])])
 [static int yylex (]AT_LEX_FORMALS[);
 ]AT_LALR1_CC_IF([], [static void yyerror (const char *msg);])
 [%}
 
-%type <ival> 'x' ';' thing line input
+]m4_ifval([$6], [%type <ival> '(' 'x' 'y' ')' ';' thing line input])[
 
-%printer { fprintf (yyoutput, "%d@%d-%d", $$, RANGE (@$)); }
-   input line thing 'x'
+%printer
+  {
+    ]AT_LALR1_CC_IF([debug_stream () << $$;],
+                    [fprintf (yyoutput, "%d", $$)])[;
+  }
+  input line thing 'x' 'y'
 
 %destructor
   { printf ("Freeing nterm input (%d@%d-%d)\n", $$, RANGE (@$)); }
@@ -360,7 +217,18 @@ AT_DATA_GRAMMAR([[input.y]],
   { printf ("Freeing token 'x' (%d@%d-%d)\n", $$, RANGE (@$)); }
   'x'
 
+%destructor
+  { printf ("Freeing token 'y' (%d@%d-%d)\n", $$, RANGE (@$)); }
+  'y'
+
 %%
+/*
+   This grammar is made to exercise error recovery.
+   "Lines" starting with `(' support error recovery, with
+   ')' as synchronizing token.  Lines starting with 'x' can never
+   be recovered from if in error.
+*/
+
 input:
   /* Nothing. */
     {
@@ -384,23 +252,24 @@ line:
               $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2),
               $3, RANGE (@3), $4, RANGE (@4));
     }
-| thing thing ';'
+| '(' thing thing ')'
     {
       $$ = $1;
-      printf ("line (%d@%d-%d): thing (%d@%d-%d) thing (%d@%d-%d) ';' (%d@%d-%d)\n",
-              $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2), $3, RANGE (@3));
+      printf ("line (%d@%d-%d): '(' (%d@%d-%d) thing (%d@%d-%d) thing (%d@%d-%d) ')' (%d@%d-%d)\n",
+              $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2),
+              $3, RANGE (@3), $4, RANGE (@4));
     }
-| thing ';'
+| '(' thing ')'
     {
       $$ = $1;
-      printf ("line (%d@%d-%d): thing (%d@%d-%d) ';' (%d@%d-%d)\n",
-              $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2));
+      printf ("line (%d@%d-%d): '(' (%d@%d-%d) thing (%d@%d-%d) ')' (%d@%d-%d)\n",
+              $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2), $3, RANGE (@3));
     }
-| error ';'
+| '(' error ')'
     {
       $$ = -1;
-      printf ("line (%d@%d-%d): error (@%d-%d) ';' (%d@%d-%d)\n",
-              $$, RANGE (@$), RANGE (@1), $2, RANGE (@2));
+      printf ("line (%d@%d-%d): '(' (%d@%d-%d) error (@%d-%d) ')' (%d@%d-%d)\n",
+              $$, RANGE (@$), $1, RANGE (@1), RANGE (@2), $3, RANGE (@3));
     }
 ;
 
@@ -413,59 +282,34 @@ thing:
     }
 ;
 %%
+/* Alias to ARGV[1]. */
+const char *yysource = 0;
+
 static int
 yylex (]AT_LEX_FORMALS[)
 {
-  static const unsigned int input[] =
-    {
-      /* Exercise 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', ';',
-      'y'
-    };
   static unsigned int counter = 0;
 
-  if (counter < (sizeof(input) / sizeof (input[0])))
-    {
+  int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++;
+  /* As in BASIC, line numbers go from 10 to 10.  */
 ]AT_LALR1_CC_IF(
-[       yylval->ival = counter;
-       /* As in BASIC, line numbers go from 10 to 10.  */
-       yylloc->begin.line = yylloc->begin.column = 10 * counter;
-       yylloc->end.line = yylloc->end.column = yylloc->begin.line + 9;
-       printf ("sending: '%c' (%d@%d-%d)\n",
-               input[[counter]], yylval->ival, RANGE (*yylloc));
-       return (int) input[[counter++]];
+[ AT_LOC.begin.line = AT_LOC.begin.column = 10 * c;
+  AT_LOC.end.line = AT_LOC.end.column = AT_LOC.begin.line + 9;
 ],
-[       yylval.ival = counter;
-       /* As in BASIC, line numbers go from 10 to 10.  */
-       yylloc.first_line = yylloc.first_column = 10 * counter;
-       yylloc.last_line = yylloc.last_column = yylloc.first_line + 9;
-       printf ("sending: '%c' (%d@%d-%d)\n",
-               input[[counter]], yylval.ival, RANGE (yylloc));
-       return (int) input[[counter++]];
+[ AT_LOC.first_line = AT_LOC.first_column = 10 * c;
+  AT_LOC.last_line = AT_LOC.last_column = AT_LOC.first_line + 9;
 ])[
-    }
+
+  if (yysource[c])
+    printf ("sending: '%c'", yysource[c]);
   else
-    {
-      printf ("sending: EOF\n");
-      return EOF;
-    }
+    printf ("sending: EOF");
+  printf (" (%d@%d-%d)\n", c, RANGE (]AT_LOC[));
+  return yysource[c];
 }
 
 ]AT_LALR1_CC_IF(
-[/* Currently, print_ is required in C++. */
-void
-yy::Parser::print_ ()
-{
-  std::cerr << location;
-}
-
-/* A C++ error reporting function. */
+[/* A C++ error reporting function. */
 void
 yy::Parser::error_ ()
 {
@@ -476,7 +320,7 @@ static bool yydebug;
 int
 yyparse ()
 {
-  yy::Parser parser (yydebug, yy::Location::Location ());
+  yy::Parser parser (yydebug);
   return parser.parse ();
 }
 ],
@@ -487,9 +331,11 @@ yyerror (const char *msg)
 }])[
 
 int
-main (void)
+main (int argc, const char *argv[])
 {
   yydebug = !!getenv ("YYDEBUG");
+  assert (argc == 2);
+  yysource = argv[1];
   if (yyparse ())
     {
       printf ("Parsing FAILED.\n");
@@ -500,61 +346,123 @@ main (void)
 }
 ]])
 
-AT_CHECK([bison -o input.c input.y])
-AT_LALR1_CC_IF([AT_COMPILE_CXX([input])],
-               [AT_COMPILE([input])])
-AT_PARSER_CHECK([./input], 1,
-[[sending: 'x' (0@0-9)
-thing (0@0-9): 'x' (0@0-9)
+AT_LALR1_CC_IF(
+  [AT_CHECK([bison -o input.cc input.y])
+   AT_COMPILE_CXX([input])],
+  [AT_CHECK([bison -o input.c input.y])
+   AT_COMPILE([input])])
+
+
+# Check the location of "empty"
+# -----------------------------
+# I.e., epsilon-reductions, as in "(x)" which ends by reducing
+# an empty "line" nterm.
+# FIXME: This location is not satisfying.  Depend on the lookahead?
+AT_PARSER_CHECK([./input '(x)'], 0,
+[[sending: '(' (0@0-9)
+sending: 'x' (1@10-19)
+thing (1@10-19): 'x' (1@10-19)
+sending: ')' (2@20-29)
+line (0@0-29): '(' (0@0-9) thing (1@10-19) ')' (2@20-29)
+sending: EOF (3@30-39)
+input (0@29-29): /* Nothing */
+input (2@0-29): line (0@0-29) input (0@29-29)
+Successful parse.
+]])
+
+
+# Check locations in error recovery
+# ---------------------------------
+# '(y)' is an error, but can be recovered from.  But what's the location
+# of the error itself ('y'), and of the resulting reduction ('(error)').
+AT_PARSER_CHECK([./input '(y)'], 0,
+[[sending: '(' (0@0-9)
+sending: 'y' (1@10-19)
+10-19: syntax error, unexpected 'y', expecting 'x'
+Freeing token 'y' (1@10-19)
+sending: ')' (2@20-29)
+line (-1@0-29): '(' (0@0-9) error (@10-19) ')' (2@20-29)
+sending: EOF (3@30-39)
+input (0@29-29): /* Nothing */
+input (2@0-29): line (-1@0-29) input (0@29-29)
+Successful parse.
+]])
+
+
+# Syntax errors caught by the parser
+# ----------------------------------
+# Exercise the discarding of stack top and input until `error'
+# can be reduced.
+#
+#     '(', '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.  And make sure the
+# lookahead is freed.
+#
+#     '(', 'x', ')',
+#     '(', 'x', ')',
+#     'y'
+AT_PARSER_CHECK([./input '(xxxxx)(x)(x)y'], 1,
+[[sending: '(' (0@0-9)
 sending: 'x' (1@10-19)
 thing (1@10-19): 'x' (1@10-19)
 sending: 'x' (2@20-29)
 thing (2@20-29): 'x' (2@20-29)
 sending: 'x' (3@30-39)
-30-39: syntax error, unexpected 'x', expecting ';'
+30-39: syntax error, unexpected 'x', expecting ')'
 Freeing nterm thing (2@20-29)
 Freeing nterm thing (1@10-19)
-Freeing nterm thing (0@0-9)
 Freeing token 'x' (3@30-39)
 sending: 'x' (4@40-49)
 Freeing token 'x' (4@40-49)
 sending: 'x' (5@50-59)
 Freeing token 'x' (5@50-59)
-sending: ';' (6@60-69)
-line (-1@0-69): error (@0-59) ';' (6@60-69)
-sending: 'x' (7@70-79)
-thing (7@70-79): 'x' (7@70-79)
+sending: ')' (6@60-69)
+line (-1@0-69): '(' (0@0-9) error (@10-59) ')' (6@60-69)
+sending: '(' (7@70-79)
 sending: 'x' (8@80-89)
 thing (8@80-89): 'x' (8@80-89)
-sending: ';' (9@90-99)
-line (7@70-99): thing (7@70-79) thing (8@80-89) ';' (9@90-99)
-sending: 'x' (10@100-109)
-thing (10@100-109): 'x' (10@100-109)
-sending: ';' (11@110-119)
-line (10@100-119): thing (10@100-109) ';' (11@110-119)
-sending: 'y' (12@120-129)
-120-129: syntax error, unexpected $undefined, expecting $end or 'x'
-sending: EOF
-Freeing nterm line (10@100-119)
-Freeing nterm line (7@70-99)
-Freeing nterm line (-1@0-69)
+sending: ')' (9@90-99)
+line (7@70-99): '(' (7@70-79) thing (8@80-89) ')' (9@90-99)
+sending: '(' (10@100-109)
+sending: 'x' (11@110-119)
+thing (11@110-119): 'x' (11@110-119)
+sending: ')' (12@120-129)
+line (10@100-129): '(' (10@100-109) thing (11@110-119) ')' (12@120-129)
+sending: 'y' (13@130-139)
+input (0@129-129): /* Nothing */
+input (2@100-129): line (10@100-129) input (0@129-129)
+input (2@70-129): line (7@70-99) input (2@100-129)
+input (2@0-129): line (-1@0-69) input (2@70-129)
+130-139: syntax error, unexpected 'y', expecting $end
+Freeing nterm input (2@0-129)
+Freeing token 'y' (13@130-139)
 Parsing FAILED.
 ]])
 
-AT_CLEANUP
 ])
 
 
-# AT_CHECK_PRINTER_AND_DESTRUCTOR([BISON-OPTIONS])
-# ------------------------------------------------
-# Produce `calc.y'.
+# AT_CHECK_PRINTER_AND_DESTRUCTOR([BISON-OPTIONS], [UNION-FLAG])
+# --------------------------------------------------------------
 m4_define([AT_CHECK_PRINTER_AND_DESTRUCTOR],
-[_AT_CHECK_PRINTER_AND_DESTRUCTOR($[1], $[2], $[3], $[4], [$1])
-])
+[AT_SETUP([Printers and Destructors $2: $1])
 
+_AT_CHECK_PRINTER_AND_DESTRUCTOR($[1], $[2], $[3], $[4],
+[%error-verbose
+%debug
+%verbose
+%locations
+$1], [$2])
+
+AT_CLEANUP
+])
 
-AT_CHECK_PRINTER_AND_DESTRUCTOR()
-AT_CHECK_PRINTER_AND_DESTRUCTOR([%locations %defines %skeleton "lalr1.cc"])
 
-# FIXME.  This test case fails.
-#AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([], [with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"], [with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [with union])