# Executing Actions. -*- Autotest -*-
-# Copyright 2001 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
# 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
# instead of being attached to the empty rule dedicated to this
# action.
-AT_DATA([[input.y]],
+AT_DATA_GRAMMAR([[input.y]],
[[%{
# include <stdio.h>
# include <stdlib.h>
+
+
## ---------------- ##
## Exotic Dollars. ##
## ---------------- ##
AT_SETUP([Exotic Dollars])
-AT_DATA([[input.y]],
+AT_DATA_GRAMMAR([[input.y]],
[[%{
# include <stdio.h>
# include <stdlib.h>
## Printers and Destructors. ##
## -------------------------- ##
-AT_SETUP([Printers and Destructors])
-
-# Make sure complex $n work.
-
-AT_DATA([[input.y]],
+# _AT_CHECK_PRINTER_AND_DESTRUCTOR($1, $2, $3, $4, BISON-DIRECTIVE, UNION-FLAG)
+# -----------------------------------------------------------------------------
+m4_define([_AT_CHECK_PRINTER_AND_DESTRUCTOR],
+[# Make sure complex $n work.
+m4_if([$1$2$3], $[1]$[2]$[3], [],
+ [m4_fatal([$0: Invalid arguments: $@])])dnl
+
+# 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]],
[[%{
#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])
+[%}
-#define YYERROR_VERBOSE 1
-#define YYDEBUG 1
-%}
-%verbose
-%union
+$5]
+m4_ifval([$6], [%union
{
int ival;
-}
-%type <ival> 'x' thing line input
+}])
+[
+%{
+]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);])
+[%}
-%printer { fprintf (yyout, "%d from %d", $$, @$.first_line); }
- input line thing 'x'
+]m4_ifval([$6], [%type <ival> '(' 'x' 'y' ')' ';' thing line input])[
-%destructor
+%printer
{
- fprintf (stdout, "Freeing ");
- /* FIXME: Ouch: INTERNAL DETAILS EXPOSED HERE. */
- /* Cannot use $$ which is the union member, not the union itself. */
- yysymprint (stdout, yytype, yyvalue, @$);
- fprintf (stdout, "\n");
+ ]AT_LALR1_CC_IF([cdebug_ << $$;],
+ [fprintf (yyoutput, "%d", $$)])[;
}
- input line thing 'x'
+ input line thing 'x' 'y'
-%{
-static int yylex (void);
-static void yyerror (const char *msg);
-%}
+%destructor
+ { printf ("Freeing nterm input (%d@%d-%d)\n", $$, RANGE (@$)); }
+ input
+
+%destructor
+ { printf ("Freeing nterm line (%d@%d-%d)\n", $$, RANGE (@$)); }
+ line
+
+%destructor
+ { printf ("Freeing nterm thing (%d@%d-%d)\n", $$, RANGE (@$)); }
+ thing
+%destructor
+ { printf ("Freeing token 'x' (%d@%d-%d)\n", $$, RANGE (@$)); }
+ 'x'
+
+%destructor
+ { printf ("Freeing token 'y' (%d@%d-%d)\n", $$, RANGE (@$)); }
+ 'y'
%%
+/*
+ This grammar is made to exercise error recovery.
+ "Lines" starting with `(' support error recovery, with
+ ')' as synchronizing token. Lines starting with 'x' can never
+ be recovered from if in error.
+*/
+
input:
/* Nothing. */
{
$$ = 0;
- printf ("input(%d): /* Nothing */';'\n", $$);
+ printf ("input (%d@%d-%d): /* Nothing */\n", $$, RANGE (@$));
}
| 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);
+ printf ("input (%d@%d-%d): line (%d@%d-%d) input (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2));
}
;
thing thing thing ';'
{
$$ = $1;
- printf ("line(%d): thing(%d) thing(%d) thing(%d) ';'\n", $$, $1, $2, $3);
+ printf ("line (%d@%d-%d): thing (%d@%d-%d) thing (%d@%d-%d) thing (%d@%d-%d) ';' (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2),
+ $3, RANGE (@3), $4, RANGE (@4));
}
-| thing thing ';'
+| '(' thing thing ')'
{
$$ = $1;
- printf ("line(%d): thing(%d) thing(%d) ';'\n", $$, $1, $2);
+ 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): thing(%d) ';'\n", $$, $1);
+ printf ("line (%d@%d-%d): '(' (%d@%d-%d) thing (%d@%d-%d) ')' (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2), $3, RANGE (@3));
}
-| error ';'
+| '(' error ')'
{
$$ = -1;
- printf ("line(%d): error ';'\n", $$);
+ printf ("line (%d@%d-%d): '(' (%d@%d-%d) error (@%d-%d) ')' (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1), RANGE (@2), $3, RANGE (@3));
}
;
'x'
{
$$ = $1;
- printf ("thing(%d): 'x'(%d)\n", $$, $1);
+ printf ("thing (%d@%d-%d): 'x' (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1));
}
;
%%
+/* Alias to ARGV[1]. */
+const char *yysource = 0;
+
static int
-yylex (void)
+yylex (]AT_LEX_FORMALS[)
{
- static const unsigned int input[] =
- {
- /* Exericise 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])))
- {
- yylval.ival = 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++];
- }
+ int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++;
+ /* As in BASIC, line numbers go from 10 to 10. */
+]AT_LALR1_CC_IF(
+[ AT_LOC.begin.line = AT_LOC.begin.column = 10 * c;
+ AT_LOC.end.line = AT_LOC.end.column = AT_LOC.begin.line + 9;
+],
+[ 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];
}
-static void
-yyerror (const char *msg)
+]AT_LALR1_CC_IF(
+[/* Currently, print_ is required in C++. */
+void
+yy::Parser::print_ ()
{
- fprintf (stdout, "%d: %s\n", yylloc.first_line, msg);
+ std::cerr << location;
}
+/* A C++ error reporting function. */
+void
+yy::Parser::error_ ()
+{
+ printf ("%d-%d: %s\n", RANGE (location), message.c_str());
+}
+
+static bool yydebug;
int
-main (void)
+yyparse ()
+{
+ yy::Parser parser (yydebug, yy::Location ());
+ return parser.parse ();
+}
+],
+[static void
+yyerror (const char *msg)
+{
+ printf ("%d-%d: %s\n", RANGE (yylloc), msg);
+}])[
+
+int
+main (int argc, const char *argv[])
{
yydebug = !!getenv ("YYDEBUG");
+ assert (argc == 2);
+ yysource = argv[1];
if (yyparse ())
{
- fprintf (stdout, "Parsing FAILED.\n");
+ printf ("Parsing FAILED.\n");
exit (1);
}
- fprintf (stdout, "Successful parse.\n");
+ printf ("Successful parse.\n");
return 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' (value = 1, line 10)
-thing(1): 'x'(1)
-sending: 'x' (value = 2, line 20)
-thing(2): 'x'(2)
-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' (value = 7, line 70)
-thing(7): 'x'(7)
-sending: 'x' (value = 8, line 80)
-thing(8): 'x'(8)
-sending: ';' (value = 9, line 90)
-line(7): thing(7) thing(8) ';'
-sending: 'x' (value = 10, line 100)
-thing(10): 'x'(10)
-sending: ';' (value = 11, line 110)
-line(10): thing(10) ';'
-sending: 'y' (value = 12, line 120)
-120: parse error, unexpected $undefined, expecting $end or 'x'
-sending: EOF
-Freeing nterm line (10 from 100)
-Freeing nterm line (7 from 70)
-Freeing nterm line (-1 from 50)
+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@0-29): /* Nothing */
+input (2@0-29): line (0@0-29) input (0@0-29)
+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@0-29): /* Nothing */
+input (2@0-29): line (-1@0-29) input (0@0-29)
+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 ')'
+Freeing nterm thing (2@20-29)
+Freeing nterm thing (1@10-19)
+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): '(' (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): '(' (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@100-129): /* Nothing */
+input (2@100-129): line (10@100-129) input (0@100-129)
+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_CHECK_PRINTER_AND_DESTRUCTOR([BISON-OPTIONS], [UNION-FLAG])
+# --------------------------------------------------------------
+m4_define([AT_CHECK_PRINTER_AND_DESTRUCTOR],
+[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([], [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])
projects / bison.git / blobdiff