forked from idaholab/moose
/
braceexpr.h
120 lines (100 loc) · 2.44 KB
/
braceexpr.h
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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
#ifndef HIT_BRACEEXPR
#define HIT_BRACEEXPR
#include "parse.h"
#include <string>
#include <vector>
#include <list>
#include <map>
#include <sstream>
namespace hit
{
inline std::string
errormsg(std::string /*fname*/, Node * /*n*/)
{
return "";
}
template <typename T, typename... Args>
std::string
errormsg(std::string fname, Node * n, T arg, Args... args)
{
std::stringstream ss;
if (n && fname.size() > 0)
ss << fname << ":" << n->line() << ": ";
else if (fname.size() > 0)
ss << fname << ":0: ";
ss << arg;
ss << errormsg("", nullptr, args...);
return ss.str();
}
inline std::string
errormsg(Node * /*n*/)
{
return "";
}
template <typename T, typename... Args>
std::string
errormsg(Node * n, T arg, Args... args)
{
std::stringstream ss;
if (n)
ss << n->filename() << ":" << n->line() << ": ";
ss << arg;
ss << errormsg(nullptr, args...);
return ss.str();
}
class BraceNode
{
public:
std::string str(int indent = 0);
BraceNode & append();
inline std::vector<BraceNode> & list() { return _list; }
inline std::string & val() { return _val; }
inline size_t & offset() { return _offset; }
inline size_t & len() { return _len; }
private:
size_t _offset;
size_t _len;
std::string _val;
std::vector<BraceNode> _list;
};
size_t parseBraceNode(const std::string & input, size_t start, BraceNode & n);
class BraceExpander;
class Evaler
{
public:
virtual std::string eval(Field * n, const std::list<std::string> & args, BraceExpander & exp) = 0;
};
class EnvEvaler : public Evaler
{
public:
virtual std::string
eval(Field * n, const std::list<std::string> & args, BraceExpander & exp) override;
};
class RawEvaler : public Evaler
{
public:
virtual std::string
eval(Field * n, const std::list<std::string> & args, BraceExpander & exp) override;
};
class ReplaceEvaler : public Evaler
{
public:
virtual std::string
eval(Field * n, const std::list<std::string> & args, BraceExpander & exp) override;
};
class BraceExpander : public Walker
{
public:
BraceExpander() {}
void registerEvaler(const std::string & name, Evaler & ev);
virtual void walk(const std::string & /*fullpath*/, const std::string & /*nodepath*/, Node * n);
std::string expand(Field * n, const std::string & input);
std::vector<std::string> used;
std::vector<std::string> errors;
private:
std::string expand(Field * n, BraceNode & expr);
std::map<std::string, Evaler *> _evalers;
ReplaceEvaler _replace;
};
} // namespace hit
#endif