Parameter

java.lang.Object
- com.google.common.flogger.parameter.Parameter

Direct Known Subclasses:

BraceStyleParameter, DateTimeParameter, SimpleParameter
```
public abstract class Parameter
extends java.lang.Object
```
An abstract representation of a parameter for a message template.
Note that this is implemented as a class (rather than via an interface) because it is very helpful to have explicit checks for the index values and count to ensure we can calculate reliable low bounds for the number of arguments a template can accept.
Note that all subclasses of Parameter must be immutable and thread safe.

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`Parameter(FormatOptions options, int index)`	Constructs a parameter to format an argument using specified formatting options.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract void`	`accept(ParameterVisitor visitor, java.lang.Object value)`
`void`	`accept(ParameterVisitor visitor, java.lang.Object[] args)`
`abstract java.lang.String`	`getFormat()`	Returns the printf format string specified for this parameter (eg, "%d" or "%tc").
`protected FormatOptions`	`getFormatOptions()`	Returns the formatting options.
`int`	`getIndex()`	Returns the index of the argument to be processed by this parameter.

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

- Constructor Detail
  - Parameter
```
protected Parameter(FormatOptions options,
                    int index)
```
    Constructs a parameter to format an argument using specified formatting options.
    
    Parameters:
    
    options - the format options for this parameter.
    
    index - the index of the argument processed by this parameter.
- Method Detail
  - getIndex
```
public final int getIndex()
```
    Returns the index of the argument to be processed by this parameter.
  - getFormatOptions
```
protected final FormatOptions getFormatOptions()
```
    Returns the formatting options.
  - accept
```
public final void accept(ParameterVisitor visitor,
                         java.lang.Object[] args)
```
  - accept
```
protected abstract void accept(ParameterVisitor visitor,
                               java.lang.Object value)
```
  - getFormat
```
public abstract java.lang.String getFormat()
```
    Returns the printf format string specified for this parameter (eg, "%d" or "%tc").