X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Flexer%2Fq2c.c;h=1a95d08091936461b083a35b3d27531d3795151e;hb=c75794cffb05769b71a346af8513a3e8dde55f94;hp=4adea9e2dd752cd153e8f54d1c842c0306b7d82f;hpb=f5c108becd49d78f4898cab11352291f5689d24e;p=pspp

diff --git a/src/language/lexer/q2c.c b/src/language/lexer/q2c.c
index 4adea9e2dd..1a95d08091 100644
--- a/src/language/lexer/q2c.c
+++ b/src/language/lexer/q2c.c
@@ -1,20 +1,18 @@
-/* q2c - parser generator for PSPP procedures.
-   Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
+/* PSPP - a program for statistical analysis.
+   Copyright (C) 1997-9, 2000, 2008, 2010 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 of the
-   License, or (at your option) any later version.
+   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
-   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/>. */
 
 #include <assert.h>
 #include <ctype.h>
@@ -85,8 +83,6 @@ static char *tokstr;
 
 /* Utility functions. */
 
-static char nullstr[] = "";
-
 /* Close all open files and delete the output file, on failure. */
 static void
 finish_up (void)
@@ -110,8 +106,8 @@ hcf (void)
   exit (EXIT_FAILURE);
 }
 
-int fail (const char *, ...) PRINTF_FORMAT (1, 2);
-int error (const char *, ...) PRINTF_FORMAT (1, 2);
+int fail (const char *, ...) PRINTF_FORMAT (1, 2) NO_RETURN;
+int error (const char *, ...) PRINTF_FORMAT (1, 2) NO_RETURN;
 
 /* Output an error message and terminate unsuccessfully. */
 int
@@ -229,11 +225,11 @@ st_upper (const char *s)
 /* Returns the address of the first non-whitespace character in S, or
    the address of the null terminator if none. */
 static char *
-skip_ws (const char *s)
+skip_ws (char *s)
 {
   while (isspace ((unsigned char) *s))
     s++;
-  return (char *) s;
+  return s;
 }
 
 /* Read one line from the input file into buf.  Lines having special
@@ -359,6 +355,45 @@ dump_token (void)
 }
 #endif /* DUMP_TOKENS */
 
+
+const char hyphen_proxy = '_';
+
+static void
+id_cpy (char **cp)
+{
+  char *dest = tokstr;
+  char *src = *cp;
+
+  while (*src == '_' || *src == '-' || isalnum ((unsigned char) *src))
+    {
+      *dest++ = *src == '-' ? hyphen_proxy :toupper ((unsigned char) (*src));
+      src++;
+    }
+
+  *cp = src;
+  *dest++ = '\0';
+}
+
+static char *
+unmunge (const char *s)
+{
+  char *dest = xmalloc (strlen (s) + 1);
+  char *d = dest;
+
+  while (*s)
+    {
+      if (*s == hyphen_proxy)
+	*d = '-';
+      else
+	*d = *s;
+      s++;
+      d++;
+    }
+  *d = '\0';
+
+  return dest;
+}
+
 /* Reads a token from the input file. */
 static int
 lex_get (void)
@@ -400,9 +435,8 @@ lex_get (void)
     {
       char *dest = tokstr;
       token = T_ID;
-      while (*cp == '_' || isalnum ((unsigned char) *cp))
-	*dest++ = toupper ((unsigned char) (*cp++));
-      *dest++ = '\0';
+
+      id_cpy (&cp);
     }
   else
     token = *cp++;
@@ -938,6 +972,19 @@ dump (int indention, const char *format, ...)
     indent += BASE_INDENT * indention;
 }
 
+/* Writes a blank line to the output file and adjusts 'indent' by BASE_INDENT
+   * INDENTION characters.
+
+   (This is only useful because GCC complains about using "" as a format
+   string, for whatever reason.) */
+static void
+dump_blank_line (int indention)
+{
+  oln++;
+  indent += BASE_INDENT * indention;
+  putc ('\n', out);
+}
+
 /* Write the structure members for specifier SPEC to the output file.
    SBC is the including subcommand. */
 static void
@@ -1033,7 +1080,7 @@ dump_declarations (void)
 	  if (buf == NULL)
 	    buf = xmalloc (1024);
 	  else
-	    dump (0, buf);
+	    dump (0, "%s", buf);
 
 	  if (k)
 	    sprintf (buf, "%s%s,", st_upper (prefix), sym->name);
@@ -1046,13 +1093,13 @@ dump_declarations (void)
     if (buf)
       {
 	buf[strlen (buf) - 1] = 0;
-	dump (0, buf);
+	dump (0, "%s", buf);
 	free (buf);
       }
     if (f)
       {
 	dump (-1, "};");
-	dump (-1, nullstr);
+	dump_blank_line (-1);
       }
   }
 
@@ -1086,7 +1133,7 @@ dump_declarations (void)
 	    dump (0, "%s%scount", st_upper (prefix), st_upper (sbc->prefix));
 
 	    dump (-1, "};");
-	    dump (-1, nullstr);
+	    dump_blank_line (-1);
 	  }
 	}
   }
@@ -1103,7 +1150,7 @@ dump_declarations (void)
 	int f = 0;
 
 	if (sbc != subcommands)
-	  dump (0, nullstr);
+	  dump_blank_line (0);
 
 	dump (0, "/* %s subcommand. */", sbc->name);
 	dump (0, "int sbc_%s;", st_lower (sbc->name));
@@ -1181,7 +1228,7 @@ dump_declarations (void)
       }
 
     dump (-1, "};");
-    dump (-1, nullstr);
+    dump_blank_line (-1);
   }
 
   /* Write out prototypes for custom_*() functions as necessary. */
@@ -1204,7 +1251,7 @@ dump_declarations (void)
 	}
 
     if (seen)
-      dump (0, nullstr);
+      dump_blank_line (0);
   }
 
   /* Prototypes for parsing and freeing functions. */
@@ -1214,7 +1261,7 @@ dump_declarations (void)
 	  make_identifier (cmdname), make_identifier (cmdname));
     dump (0, "static void free_%s (struct cmd_%s *);",
 	  make_identifier (cmdname), make_identifier (cmdname));
-    dump (0, nullstr);
+    dump_blank_line (0);
   }
 }
 
@@ -1246,7 +1293,7 @@ dump_specifier_init (const specifier *spec, const subcommand *sbc)
 
 	    assert (s->value == VAL_INT || s->value == VAL_DBL
                     || s->value == VAL_STRING);
-	    init = (s->value == VAL_INT ? "NOT_LONG"
+	    init = (s->value == VAL_INT ? "LONG_MIN"
                     : s->value == VAL_DBL ? "SYSMIS"
                     : "NULL");
 
@@ -1341,7 +1388,7 @@ dump_vars_init (int persistent)
 		dump (1, "{");
 		dump (0, "int i;");
 		dump (1, "for (i = 0; i < MAXLISTS; ++i)");
-		dump (0, "p->n_%s[i] = NOT_LONG;", st_lower (sbc->name));
+		dump (0, "p->n_%s[i] = LONG_MIN;", st_lower (sbc->name));
 		dump (-2, "}");
 		break;
 
@@ -1376,7 +1423,11 @@ make_match (const char *t)
   else if (isdigit ((unsigned char) t[0]))
     sprintf (s, "lex_match_int (lexer, %s)", t);
   else
-    sprintf (s, "lex_match_id (lexer, \"%s\")", t);
+    {
+      char *c = unmunge (t);
+      sprintf (s, "lex_match_hyphenated_word (lexer, \"%s\")", c);
+      free (c);
+    }
 
   return s;
 }
@@ -1852,16 +1903,16 @@ dump_parser (int persistent)
 
 
   /* Now deal with the /ALGORITHM subcommand implicit to all commands */
-  dump(1,"else if ( get_syntax() != COMPATIBLE && lex_match_id(lexer, \"ALGORITHM\"))");
+  dump(1,"else if ( settings_get_syntax () != COMPATIBLE && lex_match_id(lexer, \"ALGORITHM\"))");
   dump(1,"{");
 
   dump (0, "lex_match (lexer, '=');");
 
   dump(1,"if (lex_match_id(lexer, \"COMPATIBLE\"))");
-  dump(0,"set_cmd_algorithm(COMPATIBLE);");
+  dump(0,"settings_set_cmd_algorithm (COMPATIBLE);");
   outdent();
   dump(1,"else if (lex_match_id(lexer, \"ENHANCED\"))");
-  dump(0,"set_cmd_algorithm(ENHANCED);");
+  dump(0,"settings_set_cmd_algorithm (ENHANCED);");
 
   dump (-1, "}");
   outdent ();
@@ -1872,13 +1923,13 @@ dump_parser (int persistent)
   dump (0, "break;");
   dump (-2, "}");
   outdent ();
-  dump (0, nullstr);
+  dump_blank_line (0);
   dump (1, "if (lex_token (lexer) != '.')");
   dump (1, "{");
   dump (0, "lex_error (lexer, _(\"expecting end of command\"));");
   dump (0, "goto lossage;");
   dump (-1, "}");
-  dump (0, nullstr);
+  dump_blank_line (0);
 
   outdent ();
 
@@ -1897,19 +1948,19 @@ dump_parser (int persistent)
 		  sbc->name);
 	    dump (0, "goto lossage;");
 	    dump (-1, "}");
-	    dump (0, nullstr);
+	    dump_blank_line (0);
 	  }
       }
   }
 
   dump (-1, "return true;");
-  dump (0, nullstr);
+  dump_blank_line (0);
   dump (-1, "lossage:");
   indent ();
   dump (0, "free_%s (p);", make_identifier (cmdname));
   dump (0, "return false;");
   dump (-1, "}");
-  dump (0, nullstr);
+  dump_blank_line (0);
 }
 
 
@@ -1919,7 +1970,7 @@ dump_header (void)
 {
   indent = 0;
   dump (0,   "/* %s\t\t-*- mode: c; buffer-read-only: t -*-", ofn);
-  dump (0, nullstr);
+  dump_blank_line (0);
   dump (0, "   Generated by q2c from %s.", ifn);
   dump (0, "   Do not modify!");
   dump (0, " */");
@@ -2075,21 +2126,22 @@ main (int argc, char *argv[])
 	  indent = 0;
 
 	  dump (0, "#include <stdlib.h>");
-	  dump (0, "#include <libpspp/alloc.h>");
 	  dump (0, "#include <libpspp/assertion.h>");
 	  dump (0, "#include <libpspp/message.h>");
 	  dump (0, "#include <language/lexer/lexer.h>");
 	  dump (0, "#include <language/lexer/variable-parser.h>");
           dump (0, "#include <data/settings.h>");
-	  dump (0, "#include <libpspp/magic.h>");
 	  dump (0, "#include <libpspp/str.h>");
           dump (0, "#include <language/lexer/subcommand-list.h>");
 	  dump (0, "#include <data/variable.h>");
-	  dump (0, nullstr);
+	  dump_blank_line (0);
+
+          dump (0, "#include \"xalloc.h\"");
+	  dump_blank_line (0);
 
           dump (0, "#include \"gettext.h\"");
           dump (0, "#define _(msgid) gettext (msgid)");
-	  dump (0, nullstr);
+	  dump_blank_line (0);
 	}
       else if (!strcmp (directive, "declarations"))
 	dump_declarations ();