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annotate gen/logger.cpp @ 994:18ad5601dff7

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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
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1 #include <cassert>
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2 #include <cstdarg>
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3 #include <cstdio>
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4 #include <cstdlib>
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5 #include <fstream>
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6 #include <string>
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7
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8 #include "mars.h"
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9
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10 #include "llvm/Support/CommandLine.h"
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11 #include "gen/logger.h"
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13 namespace Logger
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14 {
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15 static std::string indent_str;
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16
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17 llvm::cl::opt<bool> _enabled("vv",
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18 llvm::cl::desc("Very verbose"),
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19 llvm::cl::ZeroOrMore);
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20
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21 void indent()
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22 {
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23 if (_enabled) {
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24 indent_str += "* ";
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25 }
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26 }
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27 void undent()
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28 {
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29 if (_enabled) {
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30 assert(!indent_str.empty());
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31 indent_str.resize(indent_str.size()-2);
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32 }
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33 }
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34 llvm::OStream cout()
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35 {
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36 if (_enabled)
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37 return llvm::cout << indent_str;
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38 else
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39 return 0;
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40 }
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41 void println(const char* fmt,...)
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42 {
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43 if (_enabled) {
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44 printf("%s", indent_str.c_str());
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45 va_list va;
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46 va_start(va,fmt);
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47 vprintf(fmt,va);
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48 va_end(va);
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49 printf("\n");
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50 }
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51 }
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52 void print(const char* fmt,...)
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53 {
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54 if (_enabled) {
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55 printf("%s", indent_str.c_str());
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56 va_list va;
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57 va_start(va,fmt);
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58 vprintf(fmt,va);
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59 va_end(va);
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60 }
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61 }
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62 void enable()
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63 {
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64 _enabled = true;
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65 }
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66 void disable()
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67 {
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68 _enabled = false;
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69 }
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70 bool enabled()
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71 {
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72 return _enabled;
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73 }
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74 void attention(const Loc& loc, const char* fmt,...)
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75 {
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76 printf("Warning: %s: ", loc.toChars());
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77 va_list va;
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78 va_start(va,fmt);
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79 vprintf(fmt,va);
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80 va_end(va);
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81 printf("\n");
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82 }
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83 }