* scm/beam.scm (check-slope-callbacks): check sign of slope.

[lilypond.git] / lily / includable-lexer.cc

diff --git a/lily/includable-lexer.cc b/lily/includable-lexer.cc
index 34c33a3b44c485834e3c46736b432e3a85b7c961..f6d277440021b54aec82b77841ca368429bc1cb5 100644 (file)
--- a/lily/includable-lexer.cc
+++ b/lily/includable-lexer.cc
@@ -3,14 +3,15 @@
 
   source file of the LilyPond music typesetter
 
-  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 #include <sstream>
 
+#include "config.h"
 
-#include "file-path.hh"
 #include "includable-lexer.hh"
+#include "file-path.hh"
 #include "source-file.hh"
 #include "source.hh"
 #include "warn.hh"
@@ -26,63 +27,63 @@
 #define YYSTATE YY_START
 #endif
 
+/* Flex >= 2.5.29 has include stack; but we don't use that yet.  */
+#if !HAVE_FLEXLEXER_YY_CURRENT_BUFFER
+#define yy_current_buffer \
+  (yy_buffer_stack != 0 ? yy_buffer_stack[yy_buffer_stack_top] : 0)
+#endif
+
 Includable_lexer::Includable_lexer ()
 {
+#if HAVE_FLEXLEXER_YY_CURRENT_BUFFER
   yy_current_buffer = 0;
+#endif
   allow_includes_b_ = true;
 }
 
-/** set the  new input to s, remember old file.
-*/
+/** Set the new input file to NAME, remember old file.  */
 void
-Includable_lexer::new_input (String s, Sources  * global_sources)
+Includable_lexer::new_input (String name, Sources *sources)
 {
   if (!allow_includes_b_)
     {
-      LexerError ("include files are disallowed.");
+      LexerError (_ ("include files are not allowed").to_str0 ());
       return;
     }
   
-  Source_file * sl = global_sources->get_file (s);
-  if (!sl)
+  Source_file *file = sources->get_file (name);
+  if (!file)
     {
-      String msg = _f ("can't find file: `%s'", s);
+      String msg = _f ("can't find file: `%s'", name);
       msg += "\n";
-      msg += _f ("(search path: `%s')", global_sources->path_C_->string ().to_str0 ());
+      msg += _f ("(search path: `%s')",
+                sources->path_->to_string ().to_str0 ());
       msg += "\n";
       LexerError (msg.to_str0 ());
-
       return;
     }
-  filename_strings_.push (sl->name_string ());
+  filename_strings_.push (file->name_string ());
 
   char_count_stack_.push (0);
   if (yy_current_buffer)
     state_stack_.push (yy_current_buffer);
 
   if (verbose_global_b)
-    progress_indication (String ("[") + s);
+    progress_indication (String ("[") + name);
        
-  include_stack_.push (sl);
-
-  /*
-    ugh. We'd want to create a buffer from the bytes directly.
-
-    Whoops. The size argument to yy_create_buffer is not the
-    filelength but a BUFFERSIZE. Maybe this is why reading stdin fucks up.
+  include_stack_.push (file);
 
-  */
-  yy_switch_to_buffer (yy_create_buffer (sl->get_istream (), YY_BUF_SIZE));
+  /* Ugh. We'd want to create a buffer from the bytes directly.
 
+    Whoops.  The size argument to yy_create_buffer is not the
+    filelength but a BUFFERSIZE.  Maybe this is why reading stdin fucks up.  */
+  yy_switch_to_buffer (yy_create_buffer (file->get_istream (), YY_BUF_SIZE));
 }
 
-/*
-  Unused.
- */
 void
-Includable_lexer::new_input (String name, String data, Sources* sources)
+Includable_lexer::new_input (String name, String data, Sources *sources)
 {
-  Source_file* file = new Source_file (name, data);
+  Source_file *file = new Source_file (name, data);
   sources->add (file);
   filename_strings_.push (name);
 
@@ -98,7 +99,8 @@ Includable_lexer::new_input (String name, String data, Sources* sources)
 }
 
 /** pop the inputstack.  conceptually this is a destructor, but it
-  does not destruct the Source_file that Includable_lexer::new_input creates.  */
+  does not destruct the Source_file that Includable_lexer::new_input
+  creates.  */
 bool
 Includable_lexer::close_input ()
 {
@@ -107,30 +109,31 @@ Includable_lexer::close_input ()
   if (verbose_global_b)
     progress_indication ("]");
   yy_delete_buffer (yy_current_buffer);
+#if HAVE_FLEXLEXER_YY_CURRENT_BUFFER  
   yy_current_buffer = 0;
-  if (state_stack_.empty ())
+#endif  
+  if (state_stack_.is_empty ())
     {
+#if HAVE_FLEXLEXER_YY_CURRENT_BUFFER  
       yy_current_buffer = 0;
+#endif  
       return false;
     }
-  else
-    {
-      yy_switch_to_buffer (state_stack_.pop ());
-      return true;
-    }
+  yy_switch_to_buffer (state_stack_.pop ());
+  return true;
 }
 
 char const*
 Includable_lexer::here_str0 () const
 {
-  if (include_stack_.empty ())
+  if (include_stack_.is_empty ())
     return 0;
   return include_stack_.top ()->to_str0 () + char_count_stack_.top ();
 }
 
 Includable_lexer::~Includable_lexer ()
 {
-  while (!include_stack_.empty ())
+  while (!include_stack_.is_empty ())
     {
       close_input ();
     }
@@ -148,7 +151,7 @@ Includable_lexer::add_lexed_char (int count)
 Source_file*
 Includable_lexer::get_source_file () const
 {
-  if (include_stack_.empty ())
+  if (include_stack_.is_empty ())
     return 0;
   else
     return include_stack_.top ();