Emit #line directives.

ChangeLog

@@ -1,5 +1,16 @@
 2002-11-10  Bruno Haible  <bruno@clisp.org>
 
+	* src/keyword.h (Keyword::_lineno): New field.
+	* src/input.h (Input::_struct_decl_lineno): New field.
+	* src/input.cc (Input::read_input): Set _struct_decl_lineno. Fill
+	each keyword's _lineno field.
+	* src/main.cc (main): Pass _struct_decl_lineno from Input to Output.
+	* src/output.h (Output::Output) Add struct_decl_lineno argument.
+	(Output::_struct_decl_lineno): New field.
+	* src/output.cc (Output::Output) Add struct_decl_lineno argument.
+	(output_keyword_entry): Emit #line directive before table entry.
+	(Output::output): Emit #line directive before _struct_decl.
+
 	Fix memory leaks.
 	* src/keyword.h (empty_string): New declaration.
 	* src/keyword.cc (empty_string): New variable.

src/input.cc

@@ -187,11 +187,14 @@ Input::read_input ()
   _verbatim_declarations_end = NULL;
   _verbatim_declarations_lineno = 0;
   _struct_decl = NULL;
+  _struct_decl_lineno = 0;
   _return_type = NULL;
   _struct_tag = NULL;
   {
     unsigned int lineno = 1;
     char *struct_decl = NULL;
+    unsigned int *struct_decl_linenos = NULL;
+    unsigned int struct_decl_linecount = 0;
     for (const char *p = declarations; p < declarations_end; )
       {
         const char *line_end;
@@ -282,6 +285,18 @@ Input::read_input ()
             if (struct_decl)
               delete[] struct_decl;
             struct_decl = new_struct_decl;
+            /* Append the lineno to struct_decl_linenos.  */
+            unsigned int *new_struct_decl_linenos =
+              new unsigned int[struct_decl_linecount + 1];
+            if (struct_decl_linecount > 0)
+              memcpy (new_struct_decl_linenos, struct_decl_linenos,
+                      struct_decl_linecount * sizeof (unsigned int));
+            new_struct_decl_linenos[struct_decl_linecount] = lineno;
+            if (struct_decl_linenos)
+              delete[] struct_decl_linenos;
+            struct_decl_linenos = new_struct_decl_linenos;
+            /* Increment struct_decl_linecount.  */
+            struct_decl_linecount++;
           }
         lineno++;
         p = line_end;
@@ -301,8 +316,13 @@ Input::read_input ()
             /* Drop leading whitespace.  */
             {
               char *p = struct_decl;
+              unsigned int *l = struct_decl_linenos;
               while (p[0] == '\n' || p[0] == ' ' || p[0] == '\t')
+                {
+                  if (p[0] == '\n')
+                    l++;
                   p++;
+                }
               if (p != struct_decl)
                 {
                   size_t len = strlen (p);
@@ -311,6 +331,7 @@ Input::read_input ()
                   delete[] struct_decl;
                   struct_decl = new_struct_decl;
                 }
+              _struct_decl_lineno = *l;
             }
             /* Drop trailing whitespace.  */
             for (char *p = struct_decl + strlen (struct_decl); p > struct_decl;)
@@ -364,6 +385,9 @@ Input::read_input ()
         return_type[struct_tag_length + 2] = '\0';
         _return_type = return_type;
       }
+
+    if (struct_decl_linenos)
+      delete[] struct_decl_linenos;
   }
 
   /* Parse the keywords section.  */
@@ -579,6 +603,7 @@ Input::read_input ()
             /* Allocate Keyword and add it to the list.  */
             Keyword *new_kw = _factory->create_keyword (keyword, keyword_length,
                                                         rest);
+            new_kw->_lineno = lineno;
             *list_tail = new Keyword_List (new_kw);
             list_tail = &(*list_tail)->rest();
           }

src/input.h

@@ -54,6 +54,7 @@ public:
   unsigned int          _verbatim_code_lineno;
   /* Declaration of struct type for a keyword and its attributes.  */
   const char *          _struct_decl;
+  unsigned int          _struct_decl_lineno;
   /* Return type of the lookup function.  */
   const char *          _return_type;
   /* Shorthand for user-defined struct tag type.  */

src/keyword.h

@@ -40,6 +40,8 @@ struct Keyword
   int const             _allchars_length;
   /* Additional stuff seen on the same line of the input file.  */
   const char *const     _rest;
+  /* Line number of this keyword in the input file.  */
+  unsigned int          _lineno;
 };
 
 /* A keyword, in the context of a given keyposition list.  */

src/main.cc

@@ -82,6 +82,7 @@ main (int argc, char *argv[])
         /* Output the hash function code.  */
         Output outputter (searcher._head,
                           inputter._struct_decl,
+                          inputter._struct_decl_lineno,
                           inputter._return_type,
                           inputter._struct_tag,
                           inputter._verbatim_declarations,

src/output.cc

@@ -81,8 +81,8 @@ static const char *char_to_index;
      consecutive list elements.
  */
 Output::Output (KeywordExt_List *head, const char *struct_decl,
-                const char *return_type, const char *struct_tag,
+                unsigned int struct_decl_lineno, const char *return_type,
-                const char *verbatim_declarations,
+                const char *struct_tag, const char *verbatim_declarations,
                 const char *verbatim_declarations_end,
                 unsigned int verbatim_declarations_lineno,
                 const char *verbatim_code, const char *verbatim_code_end,
@@ -90,7 +90,8 @@ Output::Output (KeywordExt_List *head, const char *struct_decl,
                 int total_keys, int total_duplicates, int max_key_len,
                 int min_key_len, int alpha_size, const int *occurrences,
                 const int *asso_values)
-  : _head (head), _struct_decl (struct_decl), _return_type (return_type),
+  : _head (head), _struct_decl (struct_decl),
+    _struct_decl_lineno (struct_decl_lineno), _return_type (return_type),
     _struct_tag (struct_tag),
     _verbatim_declarations (verbatim_declarations),
     _verbatim_declarations_end (verbatim_declarations_end),
@@ -688,6 +689,9 @@ Output::output_keylength_table () const
 static void
 output_keyword_entry (KeywordExt *temp, const char *indent)
 {
+  if (option[TYPE] && option.get_input_file_name ())
+    printf ("#line %u \"%s\"\n",
+            temp->_lineno, option.get_input_file_name ());
   printf ("%s    ", indent);
   if (option[TYPE])
     printf ("{");
@@ -1499,7 +1503,12 @@ Output::output ()
     }
 
   if (option[TYPE] && !option[NOTYPE]) /* Output type declaration now, reference it later on.... */
+    {
+      if (option.get_input_file_name ())
+        printf ("#line %u \"%s\"\n",
+                _struct_decl_lineno, option.get_input_file_name ());
       printf ("%s\n", _struct_decl);
+    }
 
   if (option[INCLUDE])
     printf ("#include <string.h>\n"); /* Declare strlen(), strcmp(), strncmp(). */

src/output.h

@@ -38,6 +38,7 @@ public:
   /* Constructor.  */
                         Output (KeywordExt_List *head,
                                 const char *struct_decl,
+                                unsigned int struct_decl_lineno,
                                 const char *return_type,
                                 const char *struct_tag,
                                 const char *verbatim_declarations,
@@ -97,6 +98,7 @@ private:
 
   /* Declaration of struct type for a keyword and its attributes.  */
   const char * const    _struct_decl;
+  unsigned int const    _struct_decl_lineno;
   /* Pointer to return type for lookup function. */
   const char *          _return_type;
   /* Shorthand for user-defined struct tag type. */