# 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
-## ---------------------- ##
-## 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[] =
- {
- /* 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'
- };
-
- if (counter < sizeof input)
- {
- yylval.ival = counter;
- printf ("sending: '%c' (value = %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' (value = 0)
-thing(0): 'x'(0)
-sending: 'x' (value = 1)
-thing(1): 'x'(1)
-sending: 'x' (value = 2)
-thing(2): 'x'(2)
-sending: 'x' (value = 3)
-4: syntax error
-sending: 'x' (value = 4)
-sending: 'x' (value = 5)
-sending: ';' (value = 6)
-line(-1): error ';'(6)
-sending: 'x' (value = 7)
-thing(7): 'x'(7)
-sending: 'x' (value = 8)
-thing(8): 'x'(8)
-sending: ';' (value = 9)
-line(7): thing(7) thing(8) ';'(9)
-sending: 'x' (value = 10)
-thing(10): 'x'(10)
-sending: ';' (value = 11)
-line(10): thing(10) ';'(11)
-sending: 'y' (value = 12)
-13: syntax error
-sending: EOF
-]])
-
-AT_CLEANUP
-
## ---------------- ##
## Printers and Destructors. ##
## -------------------------- ##
-# _AT_CHECK_PRINTER_AND_DESTRUCTOR($1, $2, $3, 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: $4])
-
-# 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]],
-[[$4
-%{
+[[%{
#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])
+[%}
-static int yylex (void);
-static void yyerror (const char *msg);
-%}
-%error-verbose
-%debug
-%verbose
-%locations
-%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);])
+[%}
+
+]m4_ifval([$6], [%type <ival> '(' 'x' 'y' ')' ';' thing line input])[
-%printer { fprintf (yyout, "%d@%d", $$, @$.first_line); }
- input line thing 'x'
+%printer
+ {
+ ]AT_LALR1_CC_IF([cdebug_ << $$;],
+ [fprintf (yyoutput, "%d", $$)])[;
+ }
+ input line thing 'x' 'y'
%destructor
- { fprintf (stdout, "Freeing nterm input (%d@%d)\n", $$, @$.first_line); }
+ { printf ("Freeing nterm input (%d@%d-%d)\n", $$, RANGE (@$)); }
input
%destructor
- { fprintf (stdout, "Freeing nterm line (%d@%d)\n", $$, @$.first_line); }
+ { printf ("Freeing nterm line (%d@%d-%d)\n", $$, RANGE (@$)); }
line
%destructor
- { fprintf (stdout, "Freeing nterm thing (%d@%d)\n", $$, @$.first_line); }
+ { printf ("Freeing nterm thing (%d@%d-%d)\n", $$, RANGE (@$)); }
thing
%destructor
- { fprintf (stdout, "Freeing token 'x' (%d@%d)\n", $$, @$.first_line); }
+ { 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. */
{
$$ = 0;
- printf ("input(%d@%d): /* Nothing */';'\n", $$, @$.first_line);
+ 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@%d): line(%d@%d) input(%d@%d)';'\n",
- $$, @$.first_line, $1, @1.first_line, $2, @2.first_line);
+ printf ("input (%d@%d-%d): line (%d@%d-%d) input (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2));
}
;
thing thing thing ';'
{
$$ = $1;
- printf ("line(%d@%d): thing(%d@%d) thing(%d@%d) thing(%d@%d) ';'\n",
- $$, @$.first_line, $1, @1.first_line, $2, @2.first_line,
- $3, @3.first_line);
+ 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@%d): thing(%d@%d) thing(%d@%d) ';'\n",
- $$, @$.first_line, $1, @1.first_line, $2, @2.first_line);
+ printf ("line (%d@%d-%d): '(' (%d@%d-%d) thing (%d@%d-%d) thing (%d@%d-%d) ')' (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1), $2, RANGE (@2),
+ $3, RANGE (@3), $4, RANGE (@4));
}
-| thing ';'
+| '(' thing ')'
{
$$ = $1;
- printf ("line(%d@%d): thing(%d@%d) ';'\n",
- $$, @$.first_line, $1, @1.first_line);
+ 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): error(@%d) ';'\n",
- $$, @$.first_line, @1.first_line);
+ printf ("line (%d@%d-%d): '(' (%d@%d-%d) error (@%d-%d) ')' (%d@%d-%d)\n",
+ $$, RANGE (@$), $1, RANGE (@1), RANGE (@2), $3, RANGE (@3));
}
;
'x'
{
$$ = $1;
- printf ("thing(%d@%d): 'x'(%d@%d)\n",
- $$, @$.first_line, $1, @1.first_line);
+ 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_ ()
+{
+ std::cerr << location;
+}
+
+/* A C++ error reporting function. */
+void
+yy::Parser::error_ ()
{
- fprintf (stdout, "%d: %s\n", yylloc.first_line, msg);
+ printf ("%d-%d: %s\n", RANGE (location), message.c_str());
}
+static bool yydebug;
int
-main (void)
+yyparse ()
+{
+ yy::Parser parser (yydebug);
+ 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 -o input.c input.y])
-AT_COMPILE([input])
-AT_PARSER_CHECK([./input], 1,
-[[sending: 'x' (value = 0, line 0)
-thing(0@0): 'x'(0@0)
-sending: 'x' (value = 1, line 10)
-thing(1@10): 'x'(1@10)
-sending: 'x' (value = 2, line 20)
-thing(2@20): 'x'(2@20)
-sending: 'x' (value = 3, line 30)
-30: syntax error, unexpected 'x', expecting ';'
-Freeing nterm thing (2@20)
-Freeing nterm thing (1@10)
-Freeing nterm thing (0@0)
-Freeing token 'x' (3@30)
-sending: 'x' (value = 4, line 40)
-Freeing token 'x' (4@40)
-sending: 'x' (value = 5, line 50)
-Freeing token 'x' (5@50)
-sending: ';' (value = 6, line 60)
-line(-1@50): error(@50) ';'
-sending: 'x' (value = 7, line 70)
-thing(7@70): 'x'(7@70)
-sending: 'x' (value = 8, line 80)
-thing(8@80): 'x'(8@80)
-sending: ';' (value = 9, line 90)
-line(7@70): thing(7@70) thing(8@80) ';'
-sending: 'x' (value = 10, line 100)
-thing(10@100): 'x'(10@100)
-sending: ';' (value = 11, line 110)
-line(10@100): thing(10@100) ';'
-sending: 'y' (value = 12, line 120)
-120: syntax error, unexpected $undefined, expecting $end or 'x'
-sending: EOF
-Freeing nterm line (10@100)
-Freeing nterm line (7@70)
-Freeing nterm line (-1@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 $end
+Freeing nterm input (2@0-129)
+Freeing token 'y' (13@130-139)
Parsing FAILED.
]])
-AT_CLEANUP
])
-# AT_CHECK_PRINTER_AND_DESTRUCTOR([BISON-OPTIONS])
-# ------------------------------------------------
-# Produce `calc.y'.
+# AT_CHECK_PRINTER_AND_DESTRUCTOR([BISON-OPTIONS], [UNION-FLAG])
+# --------------------------------------------------------------
m4_define([AT_CHECK_PRINTER_AND_DESTRUCTOR],
-[_AT_CHECK_PRINTER_AND_DESTRUCTOR($[1], $[2], $[3], [$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([])
+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