class Pegasus::Pda::DottedItem

• Pegasus::Pda::DottedItem
• Reference
• Object

Overview

An item with a "dot", which keeps track of how far the item is in terms of being parsed.

Direct Known Subclasses

• Pegasus::Pda::LookaheadItem

Defined in:

pegasus/items.cr

Constructors

• .new(item : Pegasus::Pda::Item, index : Int64 = 0_i64)

  Creates a new dotted item.

Instance Method Summary

• #==(other : DottedItem)

  Compares this item to another dotted item, including the index.

• #done?

  Checks if this dotted item is done.

• #hash(hasher)

  Hashes this dotted item.

• #index : Int64

  The index in the body of the production rule.

• #item : Item

  The production rule this dotted item wraps.

• #next_item

  Creates a new item assuming a shift took place.

• #next_item!

  Turns this item into the next item assuming a shift took place.

• #to_s(io)

Constructor Detail

Instance Method Detail