summaryrefslogtreecommitdiff
path: root/src/bin/eolian_cxx/eolian_cxx.cc
blob: c6d146205f6eb5b7a21948be510013d3e937dfe0 (plain) (blame)
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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337

#include <iostream>
#include <fstream>

#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>

#include <string>
#include <algorithm>
#include <stdexcept>
#include <iosfwd>
#include <type_traits>
#include <cassert>

extern "C"
{
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <Eina.h>
#include <Eo.h>
#include <Eolian.h>
}

#include <Eina.hh>
#include <Eolian_Cxx.hh>

#include "eo_read.h"
#include "convert.hh"
#include "safe_strings.hh"

namespace {

// Program options.
struct options_type
{
   std::vector<std::string> in_srcs;
   std::string out_file;
   std::string out_dir;
   std::string classname;
   std::string name_space;
   bool recurse;
   bool generate_all;

   options_type()
     : in_srcs()
     , out_file("")
     , out_dir("")
     , classname("")
     , name_space("")
     , recurse(false)
     , generate_all(false)
   {}
};

efl::eina::log_domain domain("eolian_cxx");

}

static void
_opt_error(std::string message)
{
   EINA_CXX_DOM_LOG_ERR(::domain) << message << std::endl;
   exit(EXIT_FAILURE);
}

static void
_assert_not_dup(std::string option, std::string value)
{
   if (value != "")
     {
        _opt_error("Option -" + option + " already set (" + value + ")");
     }
}

// Try to guess classname from input filenames.
// Precondition: Input sources must be loaded into Eolian Database
// otherwise we can't infer the classname from the .eo files.
// Precondition: Input options must have opts.classname == "".
static std::string
_guess_classname_from_sources(::options_type& opts)
{
   for (auto filename : opts.in_srcs)
     {
        if (const char *cls = eolian_class_find_by_file(filename.c_str()))
          {
             return cls;
          }
     }
   return "";
}

efl::eolian::eo_generator_options
_resolve_includes(std::string const& classname, ::options_type const& opts)
{
   efl::eolian::eo_generator_options gen_opts;

   std::string cls_name = classname;
   std::transform(cls_name.begin(), cls_name.end(), cls_name.begin(), ::tolower);

   std::string eo_file = safe_str(eolian_class_file_get(classname.c_str()));
   const size_t last = eo_file.rfind("/");
   if (last != std::string::npos) eo_file.erase(0, last+1);
   gen_opts.c_headers.push_back(eo_file + ".h");

   void *cur = NULL;
   const Eina_List *itr, *inheritances = eolian_class_inherits_list_get(classname.c_str());
   EINA_LIST_FOREACH(inheritances, itr, cur)
     {
        const char *ext = static_cast<const char*>(cur);
        std::string eo_parent_file = safe_str(eolian_class_file_get(ext));
        if (!eo_parent_file.empty())
          {
             const size_t last = eo_parent_file.rfind("/");
             if (last != std::string::npos) eo_parent_file.erase(0, last+1);
             if (eo_parent_file != "eo_base.eo") // we have our own eo_base.hh
               {
                  gen_opts.cxx_headers.push_back(eo_parent_file + ".hh");
               }
          }
        else
          {
             EINA_CXX_DOM_LOG_WARN(::domain)
               << "Couldn't find source file for class '" << ext << "'";
          }
     }
   return gen_opts;
}

static void
_generate(const std::string classname, ::options_type const& opts)
{
   efl::eolian::eo_class cls = ::c_to_cxx(classname.c_str());
   cls.name_space = opts.name_space;
   efl::eolian::eo_class_validate(cls);
   efl::eolian::eo_generator_options gen_opts = _resolve_includes(classname, opts);
   std::string outname = (opts.out_file == "") ? (cls.name + ".eo.hh") : opts.out_file;

   if (opts.out_dir != "")
     {
        outname = opts.out_dir + "/" + outname;
     }
   if(opts.out_file == "-")
     {
        efl::eolian::generate(std::cout, cls, gen_opts);
     }
   else
     {
        std::ofstream outfile;
        outfile.open(outname);
        assert(outfile.good());
        efl::eolian::generate(outfile, cls, gen_opts);
        outfile.close();
     }
}

static void
_run(options_type const& opts)
{
   if (opts.classname != "")
     {
        _generate(opts.classname.c_str(), opts);
     }
   else
     {
        efl::eina::range_ptr_list<const char* const>
          classes(eolian_class_names_list_get());
        for (auto cls : classes)
          {
             if (opts.classname == "" || opts.classname == cls)
               {
                  _generate(cls, opts);
               }
          }
    }
}

static void
_print_version()
{
   std::cerr
     << "Eolian C++ Binding Generator (EFL "
     << PACKAGE_VERSION << ")" << std::endl;
}

static void
_validate_options(::options_type const& opts)
{
   if (opts.in_srcs.size() == 0)
     {
        _opt_error("You must provide at least one input source (-I). "
                   "Either an .eo file or a directory of .eo files.");
     }
   else if (opts.out_file != "" && opts.generate_all)
     {
        _opt_error("Options -a and -o can't be used together.");
     }
   else if (!opts.generate_all && opts.classname == "")
     {
        _opt_error("Neither -a nor -c provided. "
                   "Don't know what to generate.");
     }
}

static void
_resolve_classname(options_type& opts)
{
   if (opts.classname == "")
     {
        std::string cls = _guess_classname_from_sources(opts);
        opts.classname = cls;
     }
   if (opts.classname == "" && opts.out_file != "")
     {
        EINA_CXX_DOM_LOG_ERR(::domain)
          << "Unknown output class for " << opts.out_file
          << " : Missing '-c' option?";
        std::abort();
     }
}

static void
_load_classes(options_type const& opts)
{
   for (auto src : opts.in_srcs)
     {
        if (eolian_read_from_fs(src.c_str(), opts.recurse) == NULL)
          {
             EINA_CXX_DOM_LOG_WARN(::domain)
               << "Couldn't load eolian file: " << src;
          }
     }
}

static void
_usage(const char *progname)
{
   std::cerr
     << progname
     << " [options]" << std::endl
     << "Options:" << std::endl
     << "  -a, --all               Generate bindings for all Eo classes." << std::endl
     << "  -c, --class <name>      The Eo class name to generate code for." << std::endl
     << "  -D, --out-dir <dir>     Output directory where generated code will be written." << std::endl
     << "  -I, --in <file/dir>     The source containing the .eo descriptions." << std::endl
     << "  -o, --out-file <file>   The output file name. [default: <classname>.eo.hh]" << std::endl
     << "  -n, --namespace <ns>    Wrap generated code in a namespace. [Eg: efl::ecore::file]" << std::endl
     << "  -r, --recurse           Recurse input directories loading .eo files." << std::endl
     << "  -v, --version           Print the version." << std::endl
     << "  -h, --help              Print this help." << std::endl;
   exit(EXIT_FAILURE);
}

static ::options_type
_read_options(int argc, char **argv)
{
   ::options_type opts;

   const struct option long_options[] =
     {
       { "in",        required_argument, 0,  'I' },
       { "out-dir",   required_argument, 0,  'D' },
       { "out-file",  required_argument, 0,  'o' },
       { "class",     required_argument, 0,  'c' },
       { "namespace", required_argument, 0,  'n' },
       { "all",       no_argument,       0,  'a' },
       { "recurse",   no_argument,       0,  'r' },
       { "version",   no_argument,       0,  'v' },
       { "help",      no_argument,       0,  'h' },
       { 0,           0,                 0,   0  }
     };
   const char* options = "I:D:o:c:n:arvh";

   int c, idx;
   while ( (c = getopt_long(argc, argv, options, long_options, &idx)) != -1)
     {
        if (c == 'I')
          {
             opts.in_srcs.push_back(optarg);
          }
        else if (c == 'D')
          {
             _assert_not_dup("D", opts.out_dir);
             opts.out_dir = optarg;
          }
        else if (c == 'o')
          {
             _assert_not_dup("o", opts.out_file);
             opts.out_file = optarg;
          }
        else if (c == 'c')
          {
             _assert_not_dup("c", opts.classname);
             opts.classname = optarg;
          }
        else if (c == 'n')
          {
             _assert_not_dup("n", opts.name_space);
             opts.name_space = optarg;
          }
        else if (c == 'a')
          {
             opts.generate_all = true;
          }
        else if (c == 'r')
          {
             opts.recurse = true;
          }
        else if (c == 'h')
          {
             _usage(argv[0]);
          }
        else if (c == 'v')
          {
             _print_version();
             if (argc == 2) exit(EXIT_SUCCESS);
          }
     }
   return opts;
}

int main(int argc, char **argv)
{
   efl::eina::eina_init eina_init;
   efl::eolian::eolian_init eolian_init;
#if DEBUG
   domain.set_level(efl::eina::log_level::debug);
#endif
   options_type opts = _read_options(argc, argv);
   _load_classes(opts);
   _resolve_classname(opts);
   _validate_options(opts);
   _run(opts);
   return 0;
}