Mercurial > jwe > qt-gui-with-push-parser

comparison parser.h @ 12:894be158b32d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
define parser as a class and eliminate some global variables
author John W. Eaton <jwe@octave.org>
date Thu, 23 May 2019 17:57:20 -0400
parents 0e154787183d
children d179b0bb85e4
comparison
equal deleted inserted replaced
11:b652a5528fb1 12:894be158b32d
1 #if ! defined (calc_parse_h) 1 #if ! defined (calc_parse_h)
2 #define calc_parse_h 1 2 #define calc_parse_h 1
3 3
4 namespace parser 4 namespace calc
5 { 5 {
6 extern bool beg_of_stmt; 6 class interpreter;
7 7
8 extern void init (void); 8 class parser
9 extern void fini (void); 9 {
10 public:
10 11
11 extern int parse_and_execute (const std::string& line); 12 parser (interpreter&);
13
14 parser (const parser&) = delete;
15
16 parser& operator = (const parser&) = delete;
17
18 ~parser (void);
19
20 bool beg_of_stmt (void) const { return m_beg_of_stmt; }
21
22 void beg_of_stmt (bool flag) { m_beg_of_stmt = flag; }
23
24 int parse_and_execute (const std::string& line);
25
26 void emit_error (const char *msg) const;
27
28 void emit_result (double value) const;
29
30 private:
31
32 interpreter& m_interpreter;
33
34 void *m_parser_state;
35
36 bool m_beg_of_stmt;
37 };
12 } 38 }
13 39
14 #endif 40 #endif