Mercurial > projects > ldc

comparison gen/logger.cpp @ 994:18ad5601dff7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use LLVM OStream wrapper instead of <iostream> in the logger. llvm::OStream provides all std::ostream functionality (by holding a std::ostream* internally), but * doesn't include <iostream>, avoiding per-file overhead. * allows the stream pointer to be null, and the (inlined) operators do nothing when that's the case. (This also allows removal of the ofstream("/dev/null") hack Logger used when disabled, which presumably wasn't very portable)
author Frits van Bommel <fvbommel wxs.nl>
date Thu, 26 Feb 2009 14:51:02 +0100
parents a8cb25d478c4
children e7f0c2b48047
comparison
equal deleted inserted replaced
993:27956b440c0a 994:18ad5601dff7
1 #include <cassert> 1 #include <cassert>
2 #include <cstdarg> 2 #include <cstdarg>
3 #include <cstdio> 3 #include <cstdio>
4 #include <cstdlib> 4 #include <cstdlib>
5 #include <iostream>
6 #include <fstream> 5 #include <fstream>
7 #include <string> 6 #include <string>
8 7
9 #include "mars.h" 8 #include "mars.h"
10 9
12 #include "gen/logger.h" 11 #include "gen/logger.h"
13 12
14 namespace Logger 13 namespace Logger
15 { 14 {
16 static std::string indent_str; 15 static std::string indent_str;
17 static std::ofstream null_out("/dev/null");
18 16
19 llvm::cl::opt<bool> _enabled("vv", 17 llvm::cl::opt<bool> _enabled("vv",
20 llvm::cl::desc("Very verbose"), 18 llvm::cl::desc("Very verbose"),
21 llvm::cl::ZeroOrMore); 19 llvm::cl::ZeroOrMore);
22 20
31 if (_enabled) { 29 if (_enabled) {
32 assert(!indent_str.empty()); 30 assert(!indent_str.empty());
33 indent_str.resize(indent_str.size()-2); 31 indent_str.resize(indent_str.size()-2);
34 } 32 }
35 } 33 }
36 std::ostream& cout() 34 llvm::OStream cout()
37 { 35 {
38 if (_enabled) 36 if (_enabled)
39 return std::cout << indent_str; 37 return llvm::cout << indent_str;
40 else 38 else
41 return null_out; 39 return 0;
42 } 40 }
43 void println(const char* fmt,...) 41 void println(const char* fmt,...)
44 { 42 {
45 if (_enabled) { 43 if (_enabled) {
46 printf("%s", indent_str.c_str()); 44 printf("%s", indent_str.c_str());