LookaheadReader (strata 1.3.0 API)

java.lang.Object
- ca.solostudios.strata.parser.tokenizer.Lookahead<Char>
- - ca.solostudios.strata.parser.tokenizer.LookaheadReader

```
public class LookaheadReader
extends Lookahead<Char>
```
An efficient reader of character streams, reading character by character and supporting lookaheads.
Helps to read characters from a Reader one after another. Using Lookahead.next(), upcoming characters can be inspected without consuming (removing) the current one.

Field Summary
- Fields inherited from class ca.solostudios.strata.parser.tokenizer.Lookahead
  endOfInputIndicator, endReached, itemBuffer

Constructor Summary

Constructors
Constructor Description

LookaheadReader(@NotNull java.io.Reader input)
Creates a new LookaheadReader for the given Reader.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected @NotNull Char`	`endOfInput()`	Creates the end of input indicator item.
`protected @Nullable Char`	`fetch()`	Fetches the next item from the stream.
`java.lang.String`	`toString()`

Methods inherited from class ca.solostudios.strata.parser.tokenizer.Lookahead
consume, consume, current, next, next

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

- Constructor Detail
  - LookaheadReader
```
public LookaheadReader(@NotNull
                       @NotNull java.io.Reader input)
```
    Creates a new LookaheadReader for the given Reader.
    Internally a BufferedReader is used to efficiently read single characters. The given reader will not be closed by this class.
    
    Parameters:
    
    input - the reader to draw the input from
- Method Detail
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - fetch
```
@Nullable
protected @Nullable Char fetch()
                        throws ParseException
```
    Description copied from class: Lookahead
    
    Fetches the next item from the stream.
    
    Specified by:
    
    fetch in class Lookahead<Char>
    
    Returns:
    
    the next item in the stream or null to indicate that the end was reached
    
    Throws:
    
    ParseException - If there is an exception during parsing.
  - endOfInput
```
@NotNull
protected @NotNull Char endOfInput()
```
    Description copied from class: Lookahead
    
    Creates the end of input indicator item.
    This method will be only called once, as the indicator is cached.
    
    Specified by:
    
    endOfInput in class Lookahead<Char>
    
    Returns:
    
    a special item which marks the end of the input