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e37c82d1ec
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)
83 lines
1.6 KiB
C++
83 lines
1.6 KiB
C++
#include <cassert>
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#include <cstdarg>
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#include <cstdio>
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#include <cstdlib>
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#include <fstream>
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#include <string>
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#include "mars.h"
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#include "llvm/Support/CommandLine.h"
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#include "gen/logger.h"
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namespace Logger
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{
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static std::string indent_str;
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llvm::cl::opt<bool> _enabled("vv",
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llvm::cl::desc("Very verbose"),
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llvm::cl::ZeroOrMore);
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void indent()
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{
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if (_enabled) {
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indent_str += "* ";
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}
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}
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void undent()
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{
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if (_enabled) {
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assert(!indent_str.empty());
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indent_str.resize(indent_str.size()-2);
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}
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}
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llvm::OStream cout()
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{
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if (_enabled)
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return llvm::cout << indent_str;
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else
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return 0;
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}
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void println(const char* fmt,...)
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{
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if (_enabled) {
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printf("%s", indent_str.c_str());
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va_list va;
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va_start(va,fmt);
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vprintf(fmt,va);
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va_end(va);
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printf("\n");
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}
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}
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void print(const char* fmt,...)
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{
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if (_enabled) {
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printf("%s", indent_str.c_str());
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va_list va;
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va_start(va,fmt);
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vprintf(fmt,va);
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va_end(va);
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}
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}
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void enable()
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{
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_enabled = true;
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}
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void disable()
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{
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_enabled = false;
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}
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bool enabled()
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{
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return _enabled;
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}
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void attention(const Loc& loc, const char* fmt,...)
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{
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printf("Warning: %s: ", loc.toChars());
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va_list va;
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va_start(va,fmt);
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vprintf(fmt,va);
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va_end(va);
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printf("\n");
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}
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}
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