class CLTK::CFG

• CLTK::CFG
• Reference
• Object

Defined in:

cltk/cfg.cr
cltk/cfg/item.cr
cltk/cfg/production.cr

Class Method Summary

• .is_nonterminal?(sym)
• .is_terminal?(sym)

Instance Method Summary

• #add_production(production)

  Adds production to the appropriate internal data structures.

• #build_list_production(name : String, list_elements : String | Array(String), separator = "")
• #build_nonempty_list_production(name : String, list_elements : String | Array(String), separator = "")
• #build_optional_production(name : String, opt_symbol : String)
• #callback(&callback : Symbol, Symbol, Production, Array(Int32) -> Nil)
• #clause(expression : Symbol | String)
• #curr_lhs : String?
• #curr_lhs=(curr_lhs : Nil | String)
• #first_set(sentence : String | Array(String)) : Array(String)
• #follow_set(sym0 : String, seen_lh_sides = [] of String) : Array(String)
• #get_list_production(name, list_elements : String | Array(String), separator = "")
• #get_nonempty_list_production(name : String, list_elements : String | Array(String), separator = "")
• #get_optional_production(name : String, list_elements : String | Array(String))
• #next_id

  @return [Integer] ID for the next production to be defined.

• #nonterms
• #production(symbol : Symbol | String, expression : String | Nil = nil, &)
• #production(symbol : Symbol | String, expression : String | Nil = nil)
• #productions_id : Hash(Int32, CLTK::CFG::Production)
• #productions_sym : Hash(String, Array(CLTK::CFG::Production))
• #start_symbol : String
• #symbols

  @return [Array] All symbols used in the grammar's definition.

• #terms
• #with_curr_lhs(symbol, &)

Class Method Detail

Instance Method Detail