X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Flily-parser.cc;h=5c1a3d358d61f390212f14915fa60e1d5c3536ce;hb=55aad8c485e14d29d78eddc0782a5e9901c6bf2c;hp=6d3e13072ad0c48bb753fd7f49ecf454b4250dff;hpb=e18531db1f79fb685fbd16d6a2a67bf4b6c09915;p=lilypond.git

diff --git a/lily/lily-parser.cc b/lily/lily-parser.cc
index 6d3e13072a..5c1a3d358d 100644
--- a/lily/lily-parser.cc
+++ b/lily/lily-parser.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   Jan Nieuwenhuizen <janneke@gnu.org>
 
   LilyPond is free software: you can redistribute it and/or modify
@@ -64,7 +64,7 @@ Lily_parser::Lily_parser (Lily_parser const &src)
     {
       lexer_ = new Lily_lexer (*src.lexer_, this);
     }
-  
+
   lexer_->unprotect ();
 }
 
@@ -72,7 +72,6 @@ Lily_parser::~Lily_parser ()
 {
 }
 
-
 SCM
 Lily_parser::mark_smob (SCM s)
 {
@@ -81,7 +80,7 @@ Lily_parser::mark_smob (SCM s)
 }
 
 int
-Lily_parser::print_smob (SCM s, SCM port, scm_print_state*)
+Lily_parser::print_smob (SCM s, SCM port, scm_print_state *)
 {
   scm_puts ("#<Lily_parser ", port);
   Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
@@ -97,7 +96,7 @@ Lily_parser::print_smob (SCM s, SCM port, scm_print_state*)
 void
 Lily_parser::parse_file (string init, string name, string out_name)
 {
-  // TODO: use $parser 
+  // TODO: use $parser
   lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
   output_basename_ = out_name;
 
@@ -124,7 +123,7 @@ Lily_parser::parse_file (string init, string name, string out_name)
     Don't mix cyclic pointers with weak tables.
   */
   lexer_->set_identifier (ly_symbol2scm ("parser"),
-			  SCM_EOL);
+                          SCM_EOL);
   ly_reexport_module (scm_current_module ());
 
   scm_set_current_module (mod);
@@ -142,12 +141,12 @@ Lily_parser::parse_file (string init, string name, string out_name)
 void
 Lily_parser::parse_string (string ly_code)
 {
-  // TODO: use $parser 
+  // TODO: use $parser
   lexer_->set_identifier (ly_symbol2scm ("parser"),
-			  self_scm ());
+                          self_scm ());
 
   lexer_->main_input_name_ = "<string>";
-  lexer_->is_main_input_ = true; 
+  lexer_->is_main_input_ = true;
   lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
 
   SCM mod = lexer_->set_current_scope ();
@@ -157,23 +156,59 @@ Lily_parser::parse_string (string ly_code)
   if (!define_spots_.empty ())
     {
       if (define_spots_.empty ()
-	  && !error_level_)
-	programming_error ("define_spots_ don't match, but error_level_ not set.");
+          && !error_level_)
+        programming_error ("define_spots_ don't match, but error_level_ not set.");
     }
 
   error_level_ = error_level_ | lexer_->error_level_;
 }
 
+SCM
+Lily_parser::parse_string_expression (string ly_code)
+{
+  // TODO: use $parser
+  lexer_->set_identifier (ly_symbol2scm ("parser"),
+                          self_scm ());
+
+  lexer_->main_input_name_ = "<string>";
+  lexer_->is_main_input_ = true;
+  lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
+
+  SCM mod = lexer_->set_current_scope ();
+  lexer_->push_embedded_token ();
+  do_yyparse ();
+  SCM result = lexer_->lookup_identifier_symbol (ly_symbol2scm ("$parseStringResult"));
+  // $parseStringResult is set in the grammar rule for embedded_lilypond
+  
+  scm_set_current_module (mod);
+
+  if (!define_spots_.empty ())
+    {
+      if (define_spots_.empty ()
+          && !error_level_)
+        programming_error ("define_spots_ don't match, but error_level_ not set.");
+    }
+
+  error_level_ = error_level_ | lexer_->error_level_;
+  return result;
+}
+
+void
+Lily_parser::include_string (string ly_code)
+{
+  lexer_->add_string_include (ly_code);
+}
+
 void
 Lily_parser::clear ()
 {
   if (lexer_)
     {
       while (lexer_->has_scope ())
-	lexer_->remove_scope ();
+        lexer_->remove_scope ();
     }
 
-  lexer_ = 0;  
+  lexer_ = 0;
 }
 
 char const *
@@ -196,15 +231,12 @@ Lily_parser::parser_error (Input const &i, string s)
   error_level_ = 1;
 }
 
-
-
 IMPLEMENT_SMOBS (Lily_parser);
 IMPLEMENT_TYPE_P (Lily_parser, "ly:lily-parser?");
 IMPLEMENT_DEFAULT_EQUAL_P (Lily_parser);
 
-
 /****************************************************************
-  OUTPUT-DEF 
+  OUTPUT-DEF
  ****************************************************************/
 
 Output_def *
@@ -214,7 +246,7 @@ 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);
-    
+
   return layout;
 }
 
@@ -234,8 +266,8 @@ Output_def *
 get_paper (Lily_parser *parser)
 {
   SCM papers = parser->lexer_->lookup_identifier ("$papers");
-  Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers)) ?
-    0 : unsmob_output_def (scm_car (papers));
+  Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers))
+                       ? 0 : unsmob_output_def (scm_car (papers));
   SCM default_paper = parser->lexer_->lookup_identifier ("$defaultpaper");
   layout = layout ? layout : unsmob_output_def (default_paper);
 
@@ -264,7 +296,7 @@ push_paper (Lily_parser *parser, Output_def *paper)
 void
 pop_paper (Lily_parser *parser)
 {
-  if (! scm_is_null (parser->lexer_->lookup_identifier ("$papers")))
+  if (scm_is_pair (parser->lexer_->lookup_identifier ("$papers")))
     parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
                                     scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
 }
@@ -288,13 +320,13 @@ get_header (Lily_parser *parser)
       ly_module_copy (nid, id);
       id = nid;
     }
-  
+
   return id;
 }
 
-SCM 
+SCM
 Lily_parser::make_scope () const
 {
-  SCM module = ly_make_anonymous_module (be_safe_global);
-  return module;    
+  SCM module = ly_make_module (be_safe_global);
+  return module;
 }