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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
Please use git log for copyright holder and year information
This file is part of libbash.
libbash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
libbash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with libbash. If not, see <http://www.gnu.org/licenses/>.
*/
///
/// \file ast_printer.cpp
/// \brief helper program to visualize AST
///
#include <fstream>
#include <functional>
#include <iostream>
#include <sstream>
#include <string>
#include <unordered_map>
#include <vector>
#include <boost/program_options.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/fusion/include/adapt_struct.hpp>
#include "core/bash_ast.h"
#include "core/exceptions.h"
#include "libbashParser.h"
namespace po = boost::program_options;
namespace qi = boost::spirit::qi;
struct reversed_pair : std::pair<ANTLR3_INT32, std::string>
{};
BOOST_FUSION_ADAPT_STRUCT(
reversed_pair
, (std::string, second)
(ANTLR3_INT32, first)
)
static void print_ast(std::istream& input, bool silent, bool dot)
{
bash_ast ast(input);
if(silent)
return;
if(dot)
std::cout << ast.get_dot_graph() << std::endl;
else
std::cout << ast.get_string_tree() << std::endl;
}
static inline std::string token_mapper(std::unordered_map<ANTLR3_INT32, std::string> token_map,
ANTLR3_INT32 token)
{
return token_map[token];
}
static bool build_token_map(std::unordered_map<ANTLR3_INT32, std::string>& token_map,
const std::string& path)
{
std::ifstream token_file(path);
token_file.unsetf(std::ios::skipws);
typedef boost::spirit::istream_iterator iterator;
iterator first(token_file);
iterator last;
qi::rule<iterator, reversed_pair()> line = +~qi::char_('=') >> '=' >> qi::int_parser<ANTLR3_INT32>();
return qi::parse(first, last, line % qi::eol >> qi::eol, token_map) && first == last;
}
static void print_token(std::istream& input,
const std::string& token_path,
bool silent)
{
if(silent)
return;
bash_ast ast(input);
std::unordered_map<ANTLR3_INT32, std::string> token_map;
if(build_token_map(token_map, token_path))
std::cout << ast.get_tokens(std::bind(&token_mapper,
token_map,
std::placeholders::_1))
<< std::endl;
else
std::cerr << "Building token map failed" << std::endl;
}
static void print_files(const std::vector<std::string>& files,
bool print_name,
std::function<void(std::istream&)> printer)
{
for(auto iter = files.begin(); iter != files.end(); ++iter)
{
if(print_name)
std::cout << "Interpreting " << *iter << std::endl;
std::ifstream input(iter->c_str());
printer(input);
}
}
static inline void print_expression(const std::string& expr,
std::function<void(std::istream&)> printer)
{
std::istringstream input(expr);
printer(input);
}
static inline void print_cin(std::function<void(std::istream&)> printer)
{
printer(std::cin);
}
int main(int argc, char** argv)
{
std::vector<std::string> files;
std::string expr;
po::options_description desc("Allowed options");
desc.add_options()
("help,h", "produce help message")
("files,f", po::value<std::vector<std::string>>()->multitoken(),
"input scripts. If this option and -e are not specified, "
"will use standard input")
("expr,e", po::value<std::string>(), "one line of script")
("dot,d", "print graphviz doc file instead of tree string if -s is not specified")
("token,t", po::value<std::string>(), "Print all tokens instead of AST. "
"The argument is the path to libbash.tokens")
("name,n", "When using files as input scripts, print out file names")
("silent,s", "do not print any AST")
;
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
po::notify(vm);
if(vm.count("help"))
{
std::cout << desc << std::endl;
return EXIT_FAILURE;
}
std::function<void(std::istream&)> printer;
if(vm.count("token"))
printer = std::bind(&print_token,
std::placeholders::_1,
vm["token"].as<std::string>(),
vm.count("silent"));
else
printer = std::bind(&print_ast,
std::placeholders::_1,
vm.count("silent"),
vm.count("dot"));
try
{
if(vm.count("files"))
print_files(vm["files"].as<std::vector<std::string>>(),
vm.count("name"),
printer);
else if(vm.count("expr"))
print_expression(vm["expr"].as<std::string>(), printer);
else
print_cin(printer);
}
catch(libbash::interpreter_exception& e)
{
if(!vm.count("silent"))
std::cerr << e.what() << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
|
GitWeb