-
Notifications
You must be signed in to change notification settings - Fork 0
/
driver.cpp
59 lines (49 loc) · 1.12 KB
/
driver.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
#include "driver.hpp"
#include "parser.hpp"
extern bool yy_flex_debug;
extern FILE * yyin;
extern FILE * yyout;
extern pNode root;
driver::driver ()
: trace_parsing (false), trace_scanning (false)
{
variables["one"] = 1;
variables["two"] = 2;
}
int
driver::parse (const std::string &f)
{
file = f;
scan_begin ();
// parse.set_debug_level (trace_parsing);
int res = yyparse ();
scan_end ();
//printTreeInfo(root,0);
return res;
}
void
driver::scan_begin ()
{
yy_flex_debug = trace_scanning;
if (file.empty () || file == "-")
yyin = stdin;
else if (!(yyin = fopen (file.c_str (), "rw")))
{
std::cerr << "cannot open " << file << ": " << errno << '\n';
exit (EXIT_FAILURE);
}
//out=="./hello.txt";
if (out.empty () || file == "-")
yyout = stdout;
else if (!(yyout = fopen (out.c_str (), "w")))
{
std::cerr << "cannot open " << out << ": " << errno << '\n';
exit (EXIT_FAILURE);
}
}
void
driver::scan_end ()
{
fclose (yyin);
//fclose (yyout);
}