# Checking GLR Parsing. -*- Autotest -*-
-# Copyright (C) 2002 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# 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.
-
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
# 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.
-
+#
# 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.
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
AT_BANNER([[C++ Type Syntax (GLR).]])
# and with RESOLVE1 and RESOLVE2 as annotations on the conflicted rule for
# stmt. Then compile the result.
m4_define([_AT_TEST_GLR_CXXTYPES],
-[AT_DATA_GRAMMAR([types.y],
+[
+AT_BISON_OPTION_PUSHDEFS([$1])
+
+AT_DATA_GRAMMAR([types.y],
[[/* Simplified C++ Type and Expression Grammar. */
$1
%{
#include <stdio.h>
- #define YYSTYPE const char*
- #define YYLTYPE int
+ union Node {
+ struct {
+ int isNterm;
+ int parents;
+ } nodeInfo;
+ struct {
+ int isNterm; /* 1 */
+ int parents;
+ char const *form;
+ union Node *children[3];
+ } nterm;
+ struct {
+ int isNterm; /* 0 */
+ int parents;
+ char *text;
+ } term;
+ };
+ typedef union Node Node;
+ static Node *new_nterm (char const *, Node *, Node *, Node *);
+ static Node *new_term (char *);
+ static void free_node (Node *);
+ static char *node_to_string (Node *);
+ #define YYSTYPE Node *
]m4_bmatch([$2], [stmtMerge],
[ static YYSTYPE stmtMerge (YYSTYPE x0, YYSTYPE x1);])[
#define YYINITDEPTH 10
- int yyerror (
-#if YYPURE && YYLSP_NEEDED
- YYLTYPE *yylocation,
+ #define YYSTACKEXPANDABLE 1
+ struct YYLTYPE;
+#if YYPURE
+# if YYLSP_NEEDED
+# define LEX_PARAMETERS YYSTYPE *lvalp, struct YYLTYPE *llocp
+# define ERROR_PARAMETERS struct YYLTYPE *llocp, char const *s
+# else
+# define LEX_PARAMETERS YYSTYPE *lvalp
+# endif
#endif
- const char *s
- );
-
- #if YYPURE
-]m4_bmatch([$1], [location],
-[ int yylex (YYSTYPE *lvalp, YYLTYPE *llocp);],
-[ int yylex (YYSTYPE *lvalp);])[
- #else
- int yylex (void);
- #endif
-
+#ifndef LEX_PARAMETERS
+# define LEX_PARAMETERS void
+#endif
+#ifndef ERROR_PARAMETERS
+# define ERROR_PARAMETERS char const *s
+#endif
+ int yylex (LEX_PARAMETERS);
+ void yyerror (ERROR_PARAMETERS);
%}
%token TYPENAME ID
%glr-parser
+%destructor { free_node ($$); } stmt expr decl declarator TYPENAME ID
+
%%
prog :
- | prog stmt { printf ("\n"); }
+ | prog stmt {
+ char *output;]AT_LOCATION_IF([
+ printf ("%d.%d-%d.%d: ",
+ @2.first_line, @2.first_column,
+ @2.last_line, @2.last_column);])[
+ output = node_to_string (]$[2);
+ printf ("%s\n", output);
+ free (output);
+ free_node (]$[2);
+ }
;
-stmt : expr ';' $2
+stmt : expr ';' $2 { $$ = ]$[1; }
| decl $3
- | error ';'
- | '@' { YYACCEPT; }
+ | error ';' { $$ = new_nterm ("<error>", 0, 0, 0); }
+ | '@' { YYACCEPT; }
;
-expr : ID { printf ("%s ", $$); }
+expr : ID
| TYPENAME '(' expr ')'
- { printf ("%s <cast> ", ]$[1); }
- | expr '+' expr { printf ("+ "); }
- | expr '=' expr { printf ("= "); }
+ { $$ = new_nterm ("<cast>(%s,%s)", ]$[3, ]$[1, 0); }
+ | expr '+' expr { $$ = new_nterm ("+(%s,%s)", ]$[1, ]$[3, 0); }
+ | expr '=' expr { $$ = new_nterm ("=(%s,%s)", ]$[1, ]$[3, 0); }
;
decl : TYPENAME declarator ';'
- { printf ("%s <declare> ", ]$[1); }
+ { $$ = new_nterm ("<declare>(%s,%s)", ]$[1, ]$[2, 0); }
| TYPENAME declarator '=' expr ';'
- { printf ("%s <init-declare> ", ]$[1); }
+ { $$ = new_nterm ("<init-declare>(%s,%s,%s)", ]$[1,
+ ]$[2, ]$[4); }
;
-declarator : ID { printf ("\"%s\" ", ]$[1); }
- | '(' declarator ')'
+declarator : ID
+ | '(' declarator ')' { $$ = ]$[2; }
;
%%
-#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
+#include <stdarg.h>
int
-main (int argc, char** argv)
+main (int argc, char **argv)
{
- assert (argc == 2);
- if (!freopen (argv[1], "r", stdin))
+ if (argc != 2)
abort ();
- exit (yyparse ());
+ if (!freopen (argv[1], "r", stdin))
+ return 3;
+ return yyparse ();
}
-#if YYPURE
-int
-]m4_bmatch([$1], [location],
-[yylex (YYSTYPE *lvalp, YYLTYPE *llocp)],
-[yylex (YYSTYPE *lvalp)])[
-#else
int
-yylex ()
-#endif
+yylex (LEX_PARAMETERS)
{
char buffer[256];
int c;
unsigned int i;
+ static int lineNum = 1;
+ static int colNum = 0;
#if YYPURE
+# undef yylloc
+# define yylloc (*llocp)
+# undef yylval
# define yylval (*lvalp)
-]m4_bmatch([$1], [location],[ (void) llocp;])[
#endif
while (1)
{
+ if (feof (stdin))
+ abort ();
c = getchar ();
switch (c)
{
case EOF:
return 0;
- case ' ': case '\t': case '\n': case '\f':
+ case '\t':
+ colNum = (colNum + 7) & ~7;
+ break;
+ case ' ': case '\f':
+ colNum += 1;
+ break;
+ case '\n':
+ lineNum += 1;
+ colNum = 0;
break;
default:
- if (isalpha (c))
- {
- i = 0;
-
- do
- {
- buffer[i++] = c;
- if (i == sizeof buffer - 1)
- abort ();
- c = getchar ();
- }
- while (isalnum (c) || c == '_');
-
- ungetc (c, stdin);
- buffer[i++] = 0;
- yylval = strcpy (malloc (i), buffer);
- return isupper ((unsigned char) buffer[0]) ? TYPENAME : ID;
- }
- return c;
+ {
+ int tok;
+#if YYLSP_NEEDED
+ yylloc.first_line = yylloc.last_line = lineNum;
+ yylloc.first_column = colNum;
+#endif
+ if (isalpha (c))
+ {
+ i = 0;
+
+ do
+ {
+ buffer[i++] = c;
+ colNum += 1;
+ if (i == sizeof buffer - 1)
+ abort ();
+ c = getchar ();
+ }
+ while (isalnum (c) || c == '_');
+
+ ungetc (c, stdin);
+ buffer[i++] = 0;
+ tok = isupper ((unsigned char) buffer[0]) ? TYPENAME : ID;
+ yylval = new_term (strcpy ((char *) malloc (i), buffer));
+ }
+ else
+ {
+ colNum += 1;
+ tok = c;
+ yylval = 0;
+ }
+#if YYLSP_NEEDED
+ yylloc.last_column = colNum-1;
+#endif
+ return tok;
+ }
}
}
}
-int
-yyerror (
-#if YYPURE && YYLSP_NEEDED
- YYLTYPE *yylocation,
-#endif
- const char *s
- )
+void
+yyerror (ERROR_PARAMETERS)
{
#if YYPURE && YYLSP_NEEDED
- (void) *yylocation;
+ /* Pacify GCC by using llocp. */
+ if (! llocp)
+ abort ();
#endif
fprintf (stderr, "%s\n", s);
- return 0;
+}
+
+static Node *
+new_nterm (char const *form, Node *child0, Node *child1, Node *child2)
+{
+ Node *node = (Node *) malloc (sizeof (Node));
+ node->nterm.isNterm = 1;
+ node->nterm.parents = 0;
+ node->nterm.form = form;
+ node->nterm.children[0] = child0;
+ if (child0)
+ child0->nodeInfo.parents += 1;
+ node->nterm.children[1] = child1;
+ if (child1)
+ child1->nodeInfo.parents += 1;
+ node->nterm.children[2] = child2;
+ if (child2)
+ child2->nodeInfo.parents += 1;
+ return node;
+}
+
+static Node *
+new_term (char *text)
+{
+ Node *node = (Node *) malloc (sizeof (Node));
+ node->term.isNterm = 0;
+ node->term.parents = 0;
+ node->term.text = text;
+ return node;
+}
+
+static void
+free_node (Node *node)
+{
+ if (!node)
+ return;
+ node->nodeInfo.parents -= 1;
+ /* Free only if 0 (last parent) or -1 (no parents). */
+ if (node->nodeInfo.parents > 0)
+ return;
+ if (node->nodeInfo.isNterm == 1)
+ {
+ free_node (node->nterm.children[0]);
+ free_node (node->nterm.children[1]);
+ free_node (node->nterm.children[2]);
+ }
+ else
+ free (node->term.text);
+ free (node);
+}
+
+static char *
+node_to_string (Node *node)
+{
+ char *child0;
+ char *child1;
+ char *child2;
+ char *buffer;
+ if (!node)
+ {
+ buffer = (char *) malloc (1);
+ buffer[0] = 0;
+ }
+ else if (node->nodeInfo.isNterm == 1)
+ {
+ child0 = node_to_string (node->nterm.children[0]);
+ child1 = node_to_string (node->nterm.children[1]);
+ child2 = node_to_string (node->nterm.children[2]);
+ buffer = (char *) malloc (strlen (node->nterm.form) + strlen (child0)
+ + strlen (child1) + strlen (child2) + 1);
+ sprintf (buffer, node->nterm.form, child0, child1, child2);
+ free (child0);
+ free (child1);
+ free (child2);
+ }
+ else
+ buffer = strdup (node->term.text);
+ return buffer;
}
]]
[[static YYSTYPE
stmtMerge (YYSTYPE x0, YYSTYPE x1)
{
- /* Use the arguments. */
- (void) x0;
- (void) x1;
- printf ("<OR> ");
- return "";
+ return new_nterm ("<OR>(%s,%s)", x0, x1, 0);
}
]])
)
AT_CHECK([bison -o types.c types.y], 0, [], ignore)
AT_COMPILE([types])
+AT_BISON_OPTION_POPDEFS
])
m4_define([_AT_RESOLVED_GLR_OUTPUT],
-[[z q +
-"x" T <declare>
-"x" y T <init-declare>
-x y =
-x T <cast> y +
-"x" T <declare>
-"y" z q + T <init-declare>
-y
-z q +
+[[+(z,q)
+<declare>(T,x)
+<init-declare>(T,x,y)
+=(x,y)
++(<cast>(x,T),y)
+<declare>(T,x)
+<init-declare>(T,y,+(z,q))
+<error>
++(z,q)
+]])
+
+m4_define([_AT_RESOLVED_GLR_OUTPUT_WITH_LOC],
+[[3.0-3.5: +(z,q)
+5.0-5.3: <declare>(T,x)
+7.0-7.7: <init-declare>(T,x,y)
+9.0-9.5: =(x,y)
+11.0-11.9: +(<cast>(x,T),y)
+13.0-13.5: <declare>(T,x)
+15.0-15.13: <init-declare>(T,y,+(z,q))
+17.0-17.15: <error>
+19.0-19.5: +(z,q)
]])
m4_define([_AT_AMBIG_GLR_OUTPUT],
-[[z q +
-"x" T <declare>
-"x" y T <init-declare>
-x y =
-x T <cast> y +
-"x" T <declare> x T <cast> <OR>
-"y" z q + T <init-declare> y T <cast> z q + = <OR>
-y
-z q +
+[[+(z,q)
+<declare>(T,x)
+<init-declare>(T,x,y)
+=(x,y)
++(<cast>(x,T),y)
+<OR>(<declare>(T,x),<cast>(x,T))
+<OR>(<init-declare>(T,y,+(z,q)),=(<cast>(y,T),+(z,q)))
+<error>
++(z,q)
+]])
+
+m4_define([_AT_AMBIG_GLR_OUTPUT_WITH_LOC],
+[[3.0-3.5: +(z,q)
+5.0-5.3: <declare>(T,x)
+7.0-7.7: <init-declare>(T,x,y)
+9.0-9.5: =(x,y)
+11.0-11.9: +(<cast>(x,T),y)
+13.0-13.5: <OR>(<declare>(T,x),<cast>(x,T))
+15.0-15.13: <OR>(<init-declare>(T,y,+(z,q)),=(<cast>(y,T),+(z,q)))
+17.0-17.15: <error>
+19.0-19.5: +(z,q)
]])
m4_define([_AT_GLR_STDERR],
-[[parse error
+[[syntax error
]])
m4_define([_AT_VERBOSE_GLR_STDERR],
-[[parse error, unexpected ID, expecting '=' or '+' or ')'
+[[syntax error, unexpected ID, expecting '=' or '+' or ')'
]])
## ---------------------------------------------------- ##
AT_SETUP([GLR: Resolve ambiguity, impure, no locations])
_AT_TEST_GLR_CXXTYPES([],
- [%dprec 1], [%dprec 2])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_RESOLVED_GLR_OUTPUT, _AT_GLR_STDERR)
+ [%dprec 1], [%dprec 2])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_RESOLVED_GLR_OUTPUT, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Resolve ambiguity, impure, locations])
_AT_TEST_GLR_CXXTYPES([%locations],[%dprec 1],[%dprec 2])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_RESOLVED_GLR_OUTPUT, _AT_GLR_STDERR)
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Resolve ambiguity, pure, no locations])
_AT_TEST_GLR_CXXTYPES([%pure-parser],
- [%dprec 1], [%dprec 2])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_RESOLVED_GLR_OUTPUT, _AT_GLR_STDERR)
+ [%dprec 1], [%dprec 2])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_RESOLVED_GLR_OUTPUT, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Resolve ambiguity, pure, locations])
_AT_TEST_GLR_CXXTYPES([%pure-parser %locations],
- [%dprec 1], [%dprec 2])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_RESOLVED_GLR_OUTPUT, _AT_GLR_STDERR)
+ [%dprec 1], [%dprec 2])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Merge conflicting parses, impure, no locations])
_AT_TEST_GLR_CXXTYPES([],
- [%merge <stmtMerge>], [%merge <stmtMerge>])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_AMBIG_GLR_OUTPUT, _AT_GLR_STDERR)
+ [%merge <stmtMerge>], [%merge <stmtMerge>])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_AMBIG_GLR_OUTPUT, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Merge conflicting parses, impure, locations])
_AT_TEST_GLR_CXXTYPES([%locations],
- [%merge <stmtMerge>], [%merge <stmtMerge>])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_AMBIG_GLR_OUTPUT, _AT_GLR_STDERR)
+ [%merge <stmtMerge>], [%merge <stmtMerge>])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_AMBIG_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Merge conflicting parses, pure, no locations])
_AT_TEST_GLR_CXXTYPES([%pure-parser],
- [%merge <stmtMerge>], [%merge <stmtMerge>])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_AMBIG_GLR_OUTPUT, _AT_GLR_STDERR)
+ [%merge <stmtMerge>], [%merge <stmtMerge>])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_AMBIG_GLR_OUTPUT, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Merge conflicting parses, pure, locations])
_AT_TEST_GLR_CXXTYPES([%pure-parser %locations],
- [%merge <stmtMerge>],[%merge <stmtMerge>])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_AMBIG_GLR_OUTPUT, _AT_GLR_STDERR)
+ [%merge <stmtMerge>],[%merge <stmtMerge>])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_AMBIG_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
AT_CLEANUP
AT_SETUP([GLR: Verbose messages, resolve ambiguity, impure, no locations])
_AT_TEST_GLR_CXXTYPES([%error-verbose],
- [%merge <stmtMerge>], [%merge <stmtMerge>])
-AT_PARSER_CHECK([[./types test-input | sed 's/ *$//']], 0,
- _AT_AMBIG_GLR_OUTPUT, _AT_VERBOSE_GLR_STDERR)
+ [%merge <stmtMerge>], [%merge <stmtMerge>])
+AT_PARSER_CHECK([[./types test-input]], 0,
+ _AT_AMBIG_GLR_OUTPUT, _AT_VERBOSE_GLR_STDERR)
AT_CLEANUP
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