Tracers (morel 0.3.0 API)

java.lang.Object
- net.hydromatic.morel.util.Tracers

```
public class Tracers
extends Object
```
Implementations of Unifier.Tracer.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`private static class`	`Tracers.NullTracer`	Implementation of `Unifier.Tracer` that does nothing.
`private static class`	`Tracers.PrintTracer`	Implementation of `Unifier.Tracer` that writes to a given `PrintWriter`.

Field Summary

Fields
Modifier and Type Field Description

private static Tracers.NullTracer NULL_TRACER

Constructor Summary

Constructors
Modifier Constructor Description

private Tracers()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Unifier.Tracer`	`nullTracer()`	Returns a tracer that does nothing.
`static Unifier.Tracer`	`printTracer(OutputStream stream)`	Returns a tracer that writes debugging messages to a stream.
`static Unifier.Tracer`	`printTracer(PrintWriter w)`	Returns a tracer that writes debugging messages to a writer.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NULL_TRACER

private static final Tracers.NullTracer NULL_TRACER

Constructor Detail
- Tracers
```
private Tracers()
```

Method Detail
- nullTracer
```
public static Unifier.Tracer nullTracer()
```
  Returns a tracer that does nothing.
- printTracer
```
public static Unifier.Tracer printTracer(PrintWriter w)
```
  Returns a tracer that writes debugging messages to a writer.
- printTracer
```
public static Unifier.Tracer printTracer(OutputStream stream)
```
  Returns a tracer that writes debugging messages to a stream.