- NAME
- VERSION
- SYNOPSIS
- DESCRIPTION
- METHODS
  - Class Methods
    - new
  - Instance Methods
    - next
    - next_raw
    - handle_unicode
    - get_select_handles
    - wait
    - exit
- SUBCLASSING
  - Example
- SEE ALSO

# NAME

TAP::Parser::Iterator - Base class for TAP source iterators

# VERSION

Version 3.30

# SYNOPSIS

      # to subclass:
      use TAP::Parser::Iterator ();
      use base 'TAP::Parser::Iterator';
      sub _initialize {
        # see TAP::Object...
      }

      sub next_raw { ... }
      sub wait     { ... }
      sub exit     { ... }

# DESCRIPTION

This is a simple iterator base class that defines TAP::Parser's iterator API. Iterators are typically created from TAP::Parser::SourceHandlers.

# METHODS

## Class Methods

### `new`

Create an iterator. Provided by TAP::Object.

## Instance Methods

### `next`

     while ( my $item = $iter->next ) { ... }

Iterate through it, of course.

### `next_raw`

Note: this method is abstract and should be overridden.

     while ( my $item = $iter->next_raw ) { ... }

Iterate raw input without applying any fixes for quirky input syntax.

### `handle_unicode`

If necessary switch the input stream to handle unicode. This only has any effect for I/O handle based streams.

The default implementation does nothing.

### `get_select_handles`

Return a list of filehandles that may be used upstream in a select() call to signal that this Iterator is ready. Iterators that are not handle-based should return an empty list.

The default implementation does nothing.

### `wait`

Note: this method is abstract and should be overridden.

     my $wait_status = $iter->wait;

Return the `wait` status for this iterator.

### `exit`

Note: this method is abstract and should be overridden.

     my $wait_status = $iter->exit;

Return the `exit` status for this iterator.

# SUBCLASSING

Please see "SUBCLASSING" in TAP::Parser for a subclassing overview.

You must override the abstract methods as noted above.

## Example

TAP::Parser::Iterator::Array is probably the easiest example to follow. There's not much point repeating it here.

# SEE ALSO

TAP::Object, TAP::Parser, TAP::Parser::Iterator::Array, TAP::Parser::Iterator::Stream, TAP::Parser::Iterator::Process,