Do not include <assert.h>.

[bison.git] / src / scan-gram.l

diff --git a/src/scan-gram.l b/src/scan-gram.l
index 8f18c355f40a4301a8958dca5d985a6fbf7215ee..caad580fc1c7ed356a888b0ba3e019fb5ab95746 100644 (file)
--- a/src/scan-gram.l
+++ b/src/scan-gram.l
@@ -27,6 +27,7 @@
 #include "mbswidth.h"
 #include "complain.h"
 #include "quote.h"
+#include "struniq.h"
 #include "getargs.h"
 #include "gram.h"
 #include "reader.h"
@@ -35,7 +36,7 @@
 #define YY_USER_INIT                           \
 do {                                           \
   LOCATION_RESET (*yylloc);                    \
-  yylloc->file = infile;                       \
+  yylloc->file = current_file;                 \
    /* This is only to avoid GCC warnings. */   \
   if (yycontrol) {;};                          \
 } while (0)
@@ -141,6 +142,10 @@ extend_location (location_t *loc, char const *token, int size)
 
 static struct obstack string_obstack;
 
+/* A string representing the most recently saved token.  */
+static char *last_string;
+
+
 #define YY_OBS_GROW   \
   obstack_grow (&string_obstack, yytext, yyleng)
 
@@ -153,6 +158,11 @@ static struct obstack string_obstack;
 #define YY_OBS_FREE \
   obstack_free (&string_obstack, last_string)
 
+void
+scanner_last_string_free (void)
+{
+  YY_OBS_FREE;
+}
 
 /* Within well-formed rules, RULE_LENGTH is the number of values in
    the current rule so far, which says where to find `$0' with respect
@@ -198,9 +208,6 @@ splice       (\\[ \f\t\v]*\n)*
   /* Scanner context when scanning C code.  */
   int c_context IF_LINT (= 0);
 
-  /* A string representing the most recently saved token.  */
-  char *last_string;
-
   /* At each yylex invocation, mark the current position as the
      start of the next token.  */
   YY_STEP;
@@ -252,7 +259,10 @@ splice      (\\[ \f\t\v]*\n)*
     YY_STEP;
   }
 
-  ^"#line "{int}" \""[^\"]*"\"\n"   handle_syncline (yytext + strlen ("#line "), yylloc); YY_STEP;
+  ^"#line "{int}" \"".*"\"\n" {
+    handle_syncline (yytext + sizeof "#line " - 1, yylloc);
+    YY_STEP;
+  }
 
   "="                     return EQUAL;
   ":"                     rule_length = 0; return COLON;
@@ -301,7 +311,8 @@ splice       (\\[ \f\t\v]*\n)*
   "<"{tag}">" {
     obstack_grow (&string_obstack, yytext + 1, yyleng - 2);
     YY_OBS_FINISH;
-    yylval->string = last_string;
+    yylval->struniq = struniq_new (last_string);
+    YY_OBS_FREE;
     return TYPE;
   }
 
@@ -442,7 +453,10 @@ splice      (\\[ \f\t\v]*\n)*
   \\r  obstack_1grow (&string_obstack, '\r');
   \\t  obstack_1grow (&string_obstack, '\t');
   \\v  obstack_1grow (&string_obstack, '\v');
-  \\[\"\'?\\]  obstack_1grow (&string_obstack, yytext[1]);
+
+  /* \\[\"\'?\\] would be shorter, but it confuses xgettext.  */
+  \\("\""|"'"|"?"|"\\")  obstack_1grow (&string_obstack, yytext[1]);
+
   \\(u|U[0-9a-fA-F]{4})[0-9a-fA-F]{4} {
     int c = convert_ucn_to_byte (yytext);
     if (c < 0)
@@ -469,9 +483,9 @@ splice       (\\[ \f\t\v]*\n)*
 
 <SC_CHARACTER>
 {
-  "'"              YY_OBS_GROW; BEGIN c_context;
-  \\{splice}[\'\\]  YY_OBS_GROW;
-  <<EOF>>          unexpected_end_of_file (yylloc, "'");
+  "'"                  YY_OBS_GROW; BEGIN c_context;
+  \\{splice}[^$@\[\]]  YY_OBS_GROW;
+  <<EOF>>              unexpected_end_of_file (yylloc, "'");
 }
 
 
@@ -482,9 +496,9 @@ splice       (\\[ \f\t\v]*\n)*
 
 <SC_STRING>
 {
-  "\""             YY_OBS_GROW; BEGIN c_context;
-  \\{splice}[\"\\]  YY_OBS_GROW;
-  <<EOF>>          unexpected_end_of_file (yylloc, "\"");
+  "\""                 YY_OBS_GROW; BEGIN c_context;
+  \\{splice}[^$@\[\]]  YY_OBS_GROW;
+  <<EOF>>              unexpected_end_of_file (yylloc, "\"");
 }
 
 
@@ -827,10 +841,8 @@ handle_syncline (char *args, location_t *location)
   const char *file = NULL;
   file = strchr (args, '"') + 1;
   *strchr (file, '"') = 0;
-  /* FIXME: Leaking...  Can't free, as some locations are still
-     pointing to the old file name.  */
-  infile = xstrdup (file);
-  location->file = infile;
+  current_file = xstrdup (file);
+  location->file = current_file;
   location->last_line = lineno;
 }