1 // log.h
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 //
15 // Author: riley@google.com (Michael Riley)
16 //
17 // \file
18 // Google-style logging declarations and inline definitions.
19
20 #ifndef FST_LIB_LOG_H__
21 #define FST_LIB_LOG_H__
22
23 #include <cassert>
24 #include <iostream>
25 #include <string>
26
27 #include <fst/types.h>
28 #include <fst/flags.h>
29
30 using std::string;
31
32 DECLARE_int32(v);
33
34 class LogMessage {
35 public:
LogMessage(const string & type)36 LogMessage(const string &type) : fatal_(type == "FATAL") {
37 std::cerr << type << ": ";
38 }
~LogMessage()39 ~LogMessage() {
40 std::cerr << std::endl;
41 if(fatal_)
42 exit(1);
43 }
stream()44 std::ostream &stream() { return std::cerr; }
45
46 private:
47 bool fatal_;
48 };
49
50 #define LOG(type) LogMessage(#type).stream()
51 #define VLOG(level) if ((level) <= FLAGS_v) LOG(INFO)
52
53 // Checks
CHECK(bool x)54 inline void CHECK(bool x) { assert(x); }
55
56 #define CHECK_EQ(x, y) CHECK((x) == (y))
57 #define CHECK_LT(x, y) CHECK((x) < (y))
58 #define CHECK_GT(x, y) CHECK((x) > (y))
59 #define CHECK_LE(x, y) CHECK((x) <= (y))
60 #define CHECK_GE(x, y) CHECK((x) >= (y))
61 #define CHECK_NE(x, y) CHECK((x) != (y))
62
63 // Ports
64 #define ATTRIBUTE_DEPRECATED __attribute__((deprecated))
65
66 #endif // FST_LIB_LOG_H__
67