# HG changeset patch
# User John W. Eaton <jwe@octave.org>
# Date 1361842012 18000
# Node ID 679a54d274d92cc1b36814579f3cbd27687bc3e3
# Parent  8d19626b38ae22de6d9a5efab3291fa20c2f66be
move global parser_end_of_input variable to lexical_feedback class

* lex.h, lex.ll (parser_end_of_input): Move global variable to
lexical_feedback class.  Change all uses.
(reset_parser): Don't reset parser_end_of_input here.
* oct-parse.yy (eval_string, parse_fcn_file): Add lexer_flags object
to unwind_protect stack.  Don't protect parser_end_of_input.

diff -r 8d19626b38ae -r 679a54d274d9 libinterp/interpfcn/toplev.cc
--- a/libinterp/interpfcn/toplev.cc	Mon Feb 25 20:06:44 2013 -0500
+++ b/libinterp/interpfcn/toplev.cc	Mon Feb 25 20:26:52 2013 -0500
@@ -632,7 +632,7 @@
                         command_editor::increment_current_command_number ();
                     }
                 }
-              else if (parser_end_of_input)
+              else if (lexer_flags.parser_end_of_input)
                 break;
             }
         }
diff -r 8d19626b38ae -r 679a54d274d9 libinterp/parse-tree/lex.h
--- a/libinterp/parse-tree/lex.h	Mon Feb 25 20:06:44 2013 -0500
+++ b/libinterp/parse-tree/lex.h	Mon Feb 25 20:26:52 2013 -0500
@@ -71,7 +71,8 @@
       looking_for_object_index (false), 
       looking_at_indirect_ref (false), parsing_class_method (false),
       maybe_classdef_get_set_method (false), parsing_classdef (false),
-      quote_is_transpose (false), bracketflag (0), braceflag (0),
+      quote_is_transpose (false), parser_end_of_input (false),
+      bracketflag (0), braceflag (0),
       looping (0), defining_func (0), looking_at_function_handle (0),
       looking_at_object_index (), parsed_function_name (),
       pending_local_variables ()
@@ -95,6 +96,7 @@
       maybe_classdef_get_set_method (lf.maybe_classdef_get_set_method),
       parsing_classdef (lf.parsing_classdef),
       quote_is_transpose (lf.quote_is_transpose),
+      parser_end_of_input (lf.parser_end_of_input),
       bracketflag (lf.bracketflag),
       braceflag (lf.braceflag),
       looping (lf.looping),
@@ -124,6 +126,7 @@
         maybe_classdef_get_set_method = lf.maybe_classdef_get_set_method;
         parsing_classdef = lf.parsing_classdef;
         quote_is_transpose = lf.quote_is_transpose;
+        parser_end_of_input = lf.parser_end_of_input;
         bracketflag = lf.bracketflag;
         braceflag = lf.braceflag;
         looping = lf.looping;
@@ -199,6 +202,9 @@
   // Return transpose or start a string?
   bool quote_is_transpose;
 
+  // TRUE means that we have encountered EOF on the input stream.
+  bool parser_end_of_input;
+
   // Square bracket level count.
   int bracketflag;
 
@@ -248,9 +254,6 @@
 extern std::string
 grab_comment_block (stream_reader& reader, bool at_bol, bool& eof);
 
-// TRUE means that we have encountered EOF on the input stream.
-extern bool parser_end_of_input;
-
 // Flags that need to be shared between the lexer and parser.
 extern lexical_feedback lexer_flags;
 
diff -r 8d19626b38ae -r 679a54d274d9 libinterp/parse-tree/lex.ll
--- a/libinterp/parse-tree/lex.ll	Mon Feb 25 20:06:44 2013 -0500
+++ b/libinterp/parse-tree/lex.ll	Mon Feb 25 20:26:52 2013 -0500
@@ -210,9 +210,6 @@
     } \
   while (0)
 
-// TRUE means that we have encountered EOF on the input stream.
-bool parser_end_of_input = false;
-
 // The state of the lexer.
 lexical_feedback lexer_flags;
 
@@ -1112,8 +1109,6 @@
   // Start off on the right foot.
   BEGIN (INITIAL);
 
-  parser_end_of_input = false;
-
   parser_symtab_context.clear ();
 
   // We do want a prompt by default.
diff -r 8d19626b38ae -r 679a54d274d9 libinterp/parse-tree/oct-parse.yy
--- a/libinterp/parse-tree/oct-parse.yy	Mon Feb 25 20:06:44 2013 -0500
+++ b/libinterp/parse-tree/oct-parse.yy	Mon Feb 25 20:26:52 2013 -0500
@@ -562,7 +562,7 @@
                   { $$ = 0; }
                 | END_OF_INPUT
                   {
-                    parser_end_of_input = 1;
+                    lexer_flags.parser_end_of_input = 1;
                     $$ = 0;
                   }
                 | simple_list
@@ -3517,16 +3517,17 @@
         {
           std::string file_type;
 
+          frame.protect_var (lexer_flags);
+
           frame.protect_var (get_input_from_eval_string);
-          frame.protect_var (parser_end_of_input);
           frame.protect_var (reading_fcn_file);
           frame.protect_var (reading_script_file);
           frame.protect_var (reading_classdef_file);
           frame.protect_var (Vecho_executing_commands);
 
+          lexer_flags = lexical_feedback ();
 
           get_input_from_eval_string = false;
-          parser_end_of_input = false;
 
           if (! force_script && looking_at_function_keyword (ffile))
             {
@@ -4312,10 +4313,11 @@
 
   unwind_protect frame;
 
+  frame.protect_var (lexer_flags);
+
   frame.protect_var (input_line_number);
   frame.protect_var (current_input_column);
   frame.protect_var (get_input_from_eval_string);
-  frame.protect_var (parser_end_of_input);
   frame.protect_var (line_editing);
   frame.protect_var (current_eval_string);
   frame.protect_var (current_function_depth);
@@ -4327,10 +4329,11 @@
   frame.protect_var (reading_script_file);
   frame.protect_var (reading_classdef_file);
 
+  lexer_flags = lexical_feedback ();
+
   input_line_number = 1;
   current_input_column = 1;
   get_input_from_eval_string = true;
-  parser_end_of_input = false;
   line_editing = false;
   current_function_depth = 0;
   function_scopes.clear ();
@@ -4427,7 +4430,7 @@
                   || tree_continue_command::continuing)
                 break;
             }
-          else if (parser_end_of_input)
+          else if (lexer_flags.parser_end_of_input)
             break;
         }
     }