yacc.c, glr.c: check and fix the display of locations

[bison.git] / tests / cxx-type.at

diff --git a/tests/cxx-type.at b/tests/cxx-type.at
index 8650a5bd3314ec305b05079ac1343d8915bd75fa..b0e5fdcd40de687cc5797ddc76f66989b0541220 100644 (file)
--- a/tests/cxx-type.at
+++ b/tests/cxx-type.at
@@ -1,20 +1,19 @@
 # Checking GLR Parsing.                         -*- Autotest -*-
 # Checking GLR Parsing.                         -*- Autotest -*-

-# Copyright (C) 2002, 2003, 2004, 2005 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
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
+# Copyright (C) 2002-2012 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
+# 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.
 # 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
 # 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., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.

 
 AT_BANNER([[C++ Type Syntax (GLR).]])
 
 
 AT_BANNER([[C++ Type Syntax (GLR).]])
 


@@ -24,40 +23,50 @@ 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],
 # and with RESOLVE1 and RESOLVE2 as annotations on the conflicted rule for
 # stmt.  Then compile the result.
 m4_define([_AT_TEST_GLR_CXXTYPES],

-[
-AT_BISON_OPTION_PUSHDEFS([$1])
+[AT_BISON_OPTION_PUSHDEFS([%glr-parser $1])

 
 AT_DATA_GRAMMAR([types.y],
 [[/* Simplified C++ Type and Expression Grammar.  */
 
 $1
 
 
 AT_DATA_GRAMMAR([types.y],
 [[/* Simplified C++ Type and Expression Grammar.  */
 
 $1
 

-%{
+%code requires
+{

   #include <stdio.h>
   #include <stdio.h>

-  #define YYSTYPE char *
+  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;
+  #define YYSTYPE Node *
+}
+
+%code
+{
+  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 *);

 ]m4_bmatch([$2], [stmtMerge],
 [ static YYSTYPE stmtMerge (YYSTYPE x0, YYSTYPE x1);])[
   #define YYINITDEPTH 10
   #define YYSTACKEXPANDABLE 1
 ]m4_bmatch([$2], [stmtMerge],
 [ static YYSTYPE stmtMerge (YYSTYPE x0, YYSTYPE x1);])[
   #define YYINITDEPTH 10
   #define YYSTACKEXPANDABLE 1

-  static char *format (char const *, ...);
-  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
-#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);
-%}
+  ]AT_YYERROR_DECLARE[
+  ]AT_YYLEX_DECLARE[
+}

 
 %token TYPENAME ID
 
 
 %token TYPENAME ID
 


@@ -66,36 +75,41 @@ $1
 
 %glr-parser
 
 
 %glr-parser
 

-%destructor { free ($$); } TYPENAME ID
+%destructor { free_node ($$); } stmt expr decl declarator TYPENAME ID

 
 %%
 
 prog :
      | prog stmt   {
 
 %%
 
 prog :
      | prog stmt   {

-]AT_LOCATION_IF([
-                       printf ("%d.%d-%d.%d: ",
-                            @2.first_line, @2.first_column,
-                            @2.last_line, @2.last_column);])[
-                       printf ("%s\n", ]$[2);
-                  }
+                        char *output;]AT_LOCATION_IF([
+                        printf ("%d.%d-%d.%d: ",
+                             @2.first_line, @2.first_column,
+                             @2.last_line, @2.last_column);])[
+                        output = node_to_string (]$[2);
+                        printf ("%s\n", output);
+                        free (output);
+                        free_node (]$[2);
+                   }

      ;
 
      ;
 

-stmt : expr ';'  $2    { $$ = ]$[1; }
+stmt : expr ';'  $2     { $$ = ]$[1; }

      | decl      $3
      | decl      $3

-     | error ';'       { $$ = "<error>"; }
-     | '@'             { YYACCEPT; }
+     | error ';'        { $$ = new_nterm ("<error>", YY_NULL, YY_NULL, YY_NULL); }
+     | '@'              { YYACCEPT; }

      ;
 
 expr : ID
      ;
 
 expr : ID

-     | TYPENAME '(' expr ')'  { $$ = format ("<cast>(%s,%s)", ]$[3, ]$[1); }
-     | expr '+' expr         { $$ = format ("+(%s,%s)", ]$[1, ]$[3); }
-     | expr '=' expr          { $$ = format ("=(%s,%s)", ]$[1, ]$[3); }
+     | TYPENAME '(' expr ')'
+                        { $$ = new_nterm ("<cast>(%s,%s)", ]$[3, ]$[1, YY_NULL); }
+     | expr '+' expr    { $$ = new_nterm ("+(%s,%s)", ]$[1, ]$[3, YY_NULL); }
+     | expr '=' expr    { $$ = new_nterm ("=(%s,%s)", ]$[1, ]$[3, YY_NULL); }

      ;
 
 decl : TYPENAME declarator ';'
      ;
 
 decl : TYPENAME declarator ';'

-                       { $$ = format ("<declare>(%s,%s)", ]$[1, ]$[2); }
+                        { $$ = new_nterm ("<declare>(%s,%s)", ]$[1, ]$[2, YY_NULL); }

      | TYPENAME declarator '=' expr ';'
      | TYPENAME declarator '=' expr ';'

-                       { $$ = format ("<init-declare>(%s,%s,%s)", ]$[1, ]$[2, ]$[4); }
+                        { $$ = new_nterm ("<init-declare>(%s,%s,%s)", ]$[1,
+                                          ]$[2, ]$[4); }

      ;
 
 declarator : ID
      ;
 
 declarator : ID


@@ -108,19 +122,20 @@ declarator : ID
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>

+#include <assert.h>

 
 int
 main (int argc, char **argv)
 {
 
 int
 main (int argc, char **argv)
 {

-  if (argc != 2)
-    abort ();
+  assert (argc == 2);

   if (!freopen (argv[1], "r", stdin))
     return 3;
   return yyparse ();
 }
 
   if (!freopen (argv[1], "r", stdin))
     return 3;
   return yyparse ();
 }
 

-int
-yylex (LEX_PARAMETERS)
+]AT_YYERROR_DEFINE[
+
+]AT_YYLEX_PROTOTYPE[

 {
   char buffer[256];
   int c;
 {
   char buffer[256];
   int c;


@@ -129,89 +144,142 @@ yylex (LEX_PARAMETERS)
   static int colNum = 0;
 
 #if YYPURE
   static int colNum = 0;
 
 #if YYPURE

+# undef yylloc

 # define yylloc (*llocp)
 # define yylloc (*llocp)

+# undef yylval

 # define yylval (*lvalp)
 #endif
 
   while (1)
     {
 # define yylval (*lvalp)
 #endif
 
   while (1)
     {

+      assert (!feof (stdin));

       c = getchar ();
       switch (c)
       c = getchar ();
       switch (c)

-       {
-       case EOF:
-         return 0;
-       case '\t':
-         colNum = (colNum + 7) & ~7;
-         break;
-       case ' ': case '\f':
-         colNum += 1;
-         break;
-       case '\n':
-         lineNum += 1;
-         colNum = 0;
-         break;
-       default:
-         {
-           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 = strcpy ((char *) malloc (i), buffer);
-             }
-           else
-             {
-               colNum += 1;
-               tok = c;
-               yylval = "";
-             }
-#if YYLSP_NEEDED
-           yylloc.last_column = colNum-1;
-#endif
-           return tok;
-         }
-       }
+        {
+        case EOF:
+          return 0;
+        case '\t':
+          colNum = (colNum + 7) & ~7;
+          break;
+        case ' ': case '\f':
+          colNum += 1;
+          break;
+        case '\n':
+          lineNum += 1;
+          colNum = 0;
+          break;
+        default:
+          {
+            int tok;]AT_LOCATION_IF([[
+            yylloc.first_line = yylloc.last_line = lineNum;
+            yylloc.first_column = colNum;]])[
+            if (isalpha (c))
+              {
+                i = 0;
+
+                do
+                  {
+                    buffer[i++] = c;
+                    colNum += 1;
+                    assert (i != sizeof buffer - 1);
+                    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 = YY_NULL;
+              }]AT_LOCATION_IF([[
+            yylloc.last_column = colNum-1;]])[
+            return tok;
+          }
+        }

     }
 }
 
     }
 }
 

-void
-yyerror (ERROR_PARAMETERS)
+static Node *
+new_nterm (char const *form, Node *child0, Node *child1, Node *child2)

 {
 {

-#if YYPURE && YYLSP_NEEDED
-  /* Pacify GCC by using llocp.  */
-  if (! llocp)
-    abort ();
-#endif
-  fprintf (stderr, "%s\n", s);
+  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 *
 
 static char *

-format (char const *form, ...)
+node_to_string (Node *node)

 {
 {

-   char buffer[1024];
-   va_list args;
-   va_start (args, form);
-   vsprintf (buffer, form, args);
-   va_end (args);
-   return strcpy ((char *) malloc (strlen (buffer) + 1), buffer);
+  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;

 }
 
 ]]
 }
 
 ]]


@@ -219,7 +287,7 @@ m4_bmatch([$2], [stmtMerge],
 [[static YYSTYPE
 stmtMerge (YYSTYPE x0, YYSTYPE x1)
 {
 [[static YYSTYPE
 stmtMerge (YYSTYPE x0, YYSTYPE x1)
 {

-  return format ("<OR>(%s,%s)", x0, x1);
+  return new_nterm ("<OR>(%s,%s)", x0, x1, YY_NULL);

 }
 ]])
 )
 }
 ]])
 )


@@ -250,7 +318,7 @@ z + q;
 This is total garbage, but it should be ignored.
 ]])
 
 This is total garbage, but it should be ignored.
 ]])
 

-AT_CHECK([bison -o types.c types.y], 0, [], ignore)
+AT_BISON_CHECK([-o types.c types.y], 0, [], ignore)

 AT_COMPILE([types])
 AT_BISON_OPTION_POPDEFS
 ])
 AT_COMPILE([types])
 AT_BISON_OPTION_POPDEFS
 ])


@@ -307,10 +375,18 @@ m4_define([_AT_GLR_STDERR],
 [[syntax error
 ]])
 
 [[syntax error
 ]])
 

+m4_define([_AT_GLR_STDERR_WITH_LOC],
+[[17.5: syntax error
+]])
+

 m4_define([_AT_VERBOSE_GLR_STDERR],
 [[syntax error, unexpected ID, expecting '=' or '+' or ')'
 ]])
 
 m4_define([_AT_VERBOSE_GLR_STDERR],
 [[syntax error, unexpected ID, expecting '=' or '+' or ')'
 ]])
 

+m4_define([_AT_VERBOSE_GLR_STDERR_WITH_LOC],
+[[17.5: syntax error, unexpected ID, expecting '=' or '+' or ')'
+]])
+

 ## ---------------------------------------------------- ##
 ## Compile the grammar described in the documentation.  ##
 ## ---------------------------------------------------- ##
 ## ---------------------------------------------------- ##
 ## Compile the grammar described in the documentation.  ##
 ## ---------------------------------------------------- ##


@@ -318,60 +394,60 @@ m4_define([_AT_VERBOSE_GLR_STDERR],
 AT_SETUP([GLR: Resolve ambiguity, impure, no locations])
 _AT_TEST_GLR_CXXTYPES([],
                       [%dprec 1], [%dprec 2])
 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)
+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_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_WITH_LOC, _AT_GLR_STDERR)
+AT_PARSER_CHECK([[./types test-input]], 0,
+                [_AT_RESOLVED_GLR_OUTPUT_WITH_LOC], [_AT_GLR_STDERR_WITH_LOC])

 AT_CLEANUP
 
 AT_SETUP([GLR: Resolve ambiguity, pure, no locations])
 AT_CLEANUP
 
 AT_SETUP([GLR: Resolve ambiguity, pure, no locations])

-_AT_TEST_GLR_CXXTYPES([%pure-parser],
+_AT_TEST_GLR_CXXTYPES([%define api.pure],

                       [%dprec 1], [%dprec 2])
                       [%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], [_AT_GLR_STDERR])

 AT_CLEANUP
 
 AT_SETUP([GLR: Resolve ambiguity, pure, locations])
 AT_CLEANUP
 
 AT_SETUP([GLR: Resolve ambiguity, pure, locations])

-_AT_TEST_GLR_CXXTYPES([%pure-parser %locations],
+_AT_TEST_GLR_CXXTYPES([%define api.pure %locations],

                       [%dprec 1], [%dprec 2])
                       [%dprec 1], [%dprec 2])

-AT_PARSER_CHECK([[./types test-input | sed 's/  *$//']], 0,
-                _AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
+AT_PARSER_CHECK([[./types test-input]], 0,
+                [_AT_RESOLVED_GLR_OUTPUT_WITH_LOC], [_AT_GLR_STDERR_WITH_LOC])

 AT_CLEANUP
 
 AT_SETUP([GLR: Merge conflicting parses, impure, no locations])
 _AT_TEST_GLR_CXXTYPES([],
                       [%merge <stmtMerge>], [%merge <stmtMerge>])
 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)
+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_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_WITH_LOC, _AT_GLR_STDERR)
+AT_PARSER_CHECK([[./types test-input]], 0,
+                [_AT_AMBIG_GLR_OUTPUT_WITH_LOC], [_AT_GLR_STDERR_WITH_LOC])

 AT_CLEANUP
 
 AT_SETUP([GLR: Merge conflicting parses, pure, no locations])
 AT_CLEANUP
 
 AT_SETUP([GLR: Merge conflicting parses, pure, no locations])

-_AT_TEST_GLR_CXXTYPES([%pure-parser],
+_AT_TEST_GLR_CXXTYPES([%define api.pure],

                       [%merge <stmtMerge>], [%merge <stmtMerge>])
                       [%merge <stmtMerge>], [%merge <stmtMerge>])

-AT_PARSER_CHECK([[./types test-input | sed 's/  *$//']], 0,
-                _AT_AMBIG_GLR_OUTPUT, _AT_GLR_STDERR)
+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_CLEANUP
 AT_SETUP([GLR: Merge conflicting parses, pure, locations])

-_AT_TEST_GLR_CXXTYPES([%pure-parser %locations],
+_AT_TEST_GLR_CXXTYPES([%define api.pure %locations],

                       [%merge <stmtMerge>],[%merge <stmtMerge>])
                       [%merge <stmtMerge>],[%merge <stmtMerge>])

-AT_PARSER_CHECK([[./types test-input | sed 's/  *$//']], 0,
-                _AT_AMBIG_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
+AT_PARSER_CHECK([[./types test-input]], 0,
+                [_AT_AMBIG_GLR_OUTPUT_WITH_LOC], [_AT_GLR_STDERR_WITH_LOC])

 AT_CLEANUP
 
 AT_SETUP([GLR: Verbose messages, resolve ambiguity, impure, no locations])
 _AT_TEST_GLR_CXXTYPES([%error-verbose],
                       [%merge <stmtMerge>], [%merge <stmtMerge>])
 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)
+AT_PARSER_CHECK([[./types test-input]], 0,
+                [_AT_AMBIG_GLR_OUTPUT], [_AT_VERBOSE_GLR_STDERR])

 AT_CLEANUP
 AT_CLEANUP