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1 /*
2   includable-lexer.hh -- declare Includable_lexer
3
4   source file of the LilyPond music typesetter
5
6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
7 */
8
9
10 #ifndef INCLUDABLE_LEXER_HH
11 #define INCLUDABLE_LEXER_HH
12
13 #include <FlexLexer.h>
14
15 #include "string.hh"
16 #include "varray.hh"
17 #include "fproto.hh"
18 #include "proto.hh"
19
20 // GIGA urg!
21 typedef struct yy_buffer_state *YY_BUFFER_STATE;
22
23 /**
24   an yyFlexLexer child with provisions for inclusion.
25  */
26 class Includable_lexer : public yyFlexLexer {
27   Array<YY_BUFFER_STATE> state_stack_;
28 protected:
29   bool  close_input ();
30   Array<Source_file*> include_stack_;
31   Array<int> char_count_stack_;
32 public:
33
34   Source_file* source_file_l () const;
35   void new_input (String s,Sources*);
36   Includable_lexer ();
37   ~Includable_lexer ();
38   void add_lexed_char (int);
39   char const * here_ch_C ();
40 };
41
42
43 #endif // INCLUDABLE_LEXER_HH