X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Flily-parser.cc;h=21e2946d193cc7a9533717397bfbf0a1e5cd41ec;hb=3863f416bea79ef29dded3b1b8a3f61419098f7a;hp=39e5c197a633ec08c07d4c3bc17a7ef34adc7362;hpb=b37e3f652677ae0298423db9fa0e552e5fce0c92;p=lilypond.git

diff --git a/lily/lily-parser.cc b/lily/lily-parser.cc
index 39e5c197a6..21e2946d19 100644
--- a/lily/lily-parser.cc
+++ b/lily/lily-parser.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
   Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
@@ -15,15 +15,15 @@
 #include "international.hh"
 #include "lily-lexer.hh"
 #include "lily-version.hh"
-#include "lilypond-key.hh"
+#include "ly-module.hh"
 #include "main.hh"
 #include "output-def.hh"
 #include "paper-book.hh"
 #include "parser.hh"
 #include "score.hh"
-#include "source.hh"
-#include "text-metrics.hh"
+#include "sources.hh"
 #include "warn.hh"
+#include "program-option.hh"
 
 #include "ly-smobs.icc"
 
@@ -36,7 +36,7 @@ Lily_parser::Lily_parser (Sources *sources)
 
   smobify_self ();
 
-  lexer_ = new Lily_lexer (sources_);
+  lexer_ = new Lily_lexer (sources_, this);
   lexer_->unprotect ();
 }
 
@@ -50,8 +50,10 @@ Lily_parser::Lily_parser (Lily_parser const &src)
 
   smobify_self ();
   if (src.lexer_)
-    lexer_ = new Lily_lexer (*src.lexer_);
-
+    {
+      lexer_ = new Lily_lexer (*src.lexer_, this);
+    }
+  
   lexer_->unprotect ();
 }
 
@@ -82,29 +84,24 @@ Lily_parser::print_smob (SCM s, SCM port, scm_print_state*)
 
 /* Process one .ly file, or book.  */
 void
-Lily_parser::parse_file (std::string init, std::string name, std::string out_name)
+Lily_parser::parse_file (string init, string name, string out_name)
 {
-  if (output_backend_global == "tex")
-    try_load_text_metrics (out_name);
-
   // TODO: use $parser 
-  lexer_->set_identifier (ly_symbol2scm ("parser"),
-			  self_scm ());
+  lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
   output_basename_ = out_name;
 
   lexer_->main_input_name_ = name;
 
   message (_ ("Parsing..."));
-  //  progress_indication ("\n");
 
   set_yydebug (0);
 
   lexer_->new_input (init, sources_);
 
   File_name f (name);
-  std::string s = global_path.find (f.base_ + ".twy");
+  string s = global_path.find (f.base_ + ".twy");
   s = gulp_file_to_string (s, false, -1);
-  scm_eval_string (scm_makfrom0str (s.c_str ()));
+  scm_eval_string (ly_string2scm (s));
 
   /* Read .ly IN_FILE, lex, parse, write \score blocks from IN_FILE to
      OUT_FILE (unless IN_FILE redefines output file name).  */
@@ -121,36 +118,34 @@ Lily_parser::parse_file (std::string init, std::string name, std::string out_nam
 
   scm_set_current_module (mod);
 
-  if (!define_spots_.is_empty ())
+  if (!define_spots_.empty ())
     {
-      define_spots_.top ().warning (_ ("braces don't match"));
+      define_spots_.back ().warning (_ ("braces do not match"));
       error_level_ = 1;
     }
 
   error_level_ = error_level_ | lexer_->error_level_;
-  lexer_ = 0;
+  clear ();
 }
 
 void
-Lily_parser::parse_string (std::string ly_code)
+Lily_parser::parse_string (string ly_code)
 {
   // TODO: use $parser 
   lexer_->set_identifier (ly_symbol2scm ("parser"),
 			  self_scm ());
 
   lexer_->main_input_name_ = "<string>";
-  lexer_->is_main_input_ = true;
-
-  set_yydebug (0);
+  lexer_->is_main_input_ = true; 
   lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
 
   SCM mod = lexer_->set_current_scope ();
   do_yyparse ();
   scm_set_current_module (mod);
 
-  if (!define_spots_.is_empty ())
+  if (!define_spots_.empty ())
     {
-      if (define_spots_.is_empty ()
+      if (define_spots_.empty ()
 	  && !error_level_)
 	programming_error ("define_spots_ don't match, but error_level_ not set.");
     }
@@ -158,6 +153,18 @@ Lily_parser::parse_string (std::string ly_code)
   error_level_ = error_level_ | lexer_->error_level_;
 }
 
+void
+Lily_parser::clear ()
+{
+  if (lexer_)
+    {
+      while (lexer_->has_scope ())
+	lexer_->remove_scope ();
+    }
+
+  lexer_ = 0;  
+}
+
 char const *
 Lily_parser::here_str0 () const
 {
@@ -165,14 +172,14 @@ Lily_parser::here_str0 () const
 }
 
 void
-Lily_parser::parser_error (std::string s)
+Lily_parser::parser_error (string s)
 {
   lexer_->here_input ().error (_ (s.c_str ()));
   error_level_ = 1;
 }
 
 void
-Lily_parser::parser_error (Input const &i, std::string s)
+Lily_parser::parser_error (Input const &i, string s)
 {
   i.error (s);
   error_level_ = 1;
@@ -196,7 +203,6 @@ get_layout (Lily_parser *parser)
   Output_def *layout = unsmob_output_def (id);
   layout = layout ? layout->clone () : new Output_def;
   layout->set_variable (ly_symbol2scm ("is-layout"), SCM_BOOL_T);
-  layout->parser_ = parser;
     
   return layout;
 }
@@ -208,34 +214,76 @@ get_midi (Lily_parser *parser)
   Output_def *layout = unsmob_output_def (id);
   layout = layout ? layout->clone () : new Output_def;
   layout->set_variable (ly_symbol2scm ("is-midi"), SCM_BOOL_T);
-  layout->parser_ = parser;
   return layout;
 }
 
+/* Return a copy of the top of $papers stack, or $defaultpaper if the
+ * stack is empty */
 Output_def *
 get_paper (Lily_parser *parser)
 {
-  SCM id = parser->lexer_->lookup_identifier ("$defaultpaper");
-  Output_def *layout = unsmob_output_def (id);
+  SCM papers = parser->lexer_->lookup_identifier ("$papers");
+  Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers)) ?
+    0 : unsmob_output_def (scm_car (papers));
+  SCM default_paper = parser->lexer_->lookup_identifier ("$defaultpaper");
+  layout = layout ? layout : unsmob_output_def (default_paper);
 
   layout = layout ? dynamic_cast<Output_def *> (layout->clone ()) : new Output_def;
   layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
-  layout->parser_ = parser;
   return layout;
 }
 
+/* Initialize (reset) the $papers stack */
+void
+init_papers (Lily_parser *parser)
+{
+  parser->lexer_->set_identifier (ly_symbol2scm ("$papers"), SCM_EOL);
+}
+
+/* Push a paper on top of $papers stack */
+void
+push_paper (Lily_parser *parser, Output_def *paper)
+{
+  parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
+                                  scm_cons (paper->self_scm (),
+                                            parser->lexer_->lookup_identifier ("$papers")));
+}
+
+/* Pop a paper from $papers stack */
+void
+pop_paper (Lily_parser *parser)
+{
+  if (! scm_is_null (parser->lexer_->lookup_identifier ("$papers")))
+    parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
+                                    scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
+}
+
+/* Change the paper on top of $papers stack */
+void
+set_paper (Lily_parser *parser, Output_def *paper)
+{
+  scm_set_car_x (parser->lexer_->lookup_identifier ("$papers"), paper->self_scm ());
+}
+
 SCM
 get_header (Lily_parser *parser)
 {
   SCM id = parser->lexer_->lookup_identifier ("$defaultheader");
   if (!ly_is_module (id))
-    id = ly_make_anonymous_module (be_safe_global);
+    id = parser->make_scope ();
   else
     {
-      SCM nid = ly_make_anonymous_module (false);
-      ly_module_copy(nid,id);
+      SCM nid = parser->make_scope ();
+      ly_module_copy (nid, id);
       id = nid;
     }
   
   return id;
 }
+
+SCM 
+Lily_parser::make_scope () const
+{
+  SCM module = ly_make_anonymous_module (be_safe_global);
+  return module;    
+}