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//===-- gen/logger.d - Codegen debug logging ----------------------*- D -*-===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
//
// D implementation of the functionality of logger.{h/cpp}.
//
//===----------------------------------------------------------------------===//
module gen.logger;
private extern (C++) extern __gshared bool _Logger_enabled;
extern (C++, Logger)
{
void indent();
void undent();
void printIndentation();
}
struct Log
{
static bool enabled()
{
return _Logger_enabled;
}
static void indent()
{
if (enabled())
.indent();
}
static void undent()
{
if (enabled())
.undent();
}
// Usage: auto _ = Log.newScope();
static auto newScope()
{
struct ScopeExitUndenter
{
~this()
{
Logger.undent();
}
}
Logger.indent();
return ScopeExitUndenter();
}
static void printfln(T...)(T args)
{
static import std.stdio;
if (enabled())
{
printIndentation();
std.stdio.writefln(args);
}
}
static void printf(T...)(T args)
{
static import std.stdio;
if (enabled())
{
printIndentation();
std.stdio.writef(args);
}
}
}
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