class Racc::Sym
Stands terminal and nonterminal symbols.
Attributes
assoc[RW]
expand[R]
hash[R]
heads[R]
cache
ident[R]
locate[R]
precedence[RW]
serialized[W]
value[R]
Public Class Methods
new(value, dummyp)
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# File racc-1.7.3/lib/racc/grammar.rb, line 974 def initialize(value, dummyp) @ident = nil @value = value @dummyp = dummyp @term = nil @nterm = nil @should_terminal = false @precedence = nil case value when Symbol @to_s = value.to_s @serialized = value.inspect @string = false when String @to_s = value.inspect @serialized = value.dump @string = true when false @to_s = '$end' @serialized = 'false' @string = false else raise ArgumentError, "unknown symbol value: #{value.class}" end @heads = [] @locate = [] @snull = nil @null = nil @expand = nil @useless = nil end
once_writer(nm)
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# File racc-1.7.3/lib/racc/grammar.rb, line 1009 def once_writer(nm) nm = nm.id2name module_eval(<<-EOS) def #{nm}=(v) raise 'racc: fatal: @#{nm} != nil' unless @#{nm}.nil? @#{nm} = v end EOS end
Public Instance Methods
dummy?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1027 def dummy? @dummyp end
nonterminal?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1035 def nonterminal? @nterm end
null=(n)
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# File racc-1.7.3/lib/racc/grammar.rb, line 1097 def null=(n) @null = n end
nullable?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1093 def nullable? @null end
rule()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1076 def rule Rule.new(nil, [self], UserAction.empty) end
self_null?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1087 def self_null? @snull end
serialize()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1057 def serialize @serialized end
should_terminal()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1045 def should_terminal @should_terminal = true end
should_terminal?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1049 def should_terminal? @should_terminal end
string_symbol?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1053 def string_symbol? @string end
term=(t)
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# File racc-1.7.3/lib/racc/grammar.rb, line 1039 def term=(t) raise 'racc: fatal: term= called twice' unless @term.nil? @term = t @nterm = !t end
terminal?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1031 def terminal? @term end
to_s()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1066 def to_s @to_s.dup end
Also aliased as: inspect
useless=(f)
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# File racc-1.7.3/lib/racc/grammar.rb, line 1108 def useless=(f) @useless = f end
useless?()
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# File racc-1.7.3/lib/racc/grammar.rb, line 1104 def useless? @useless end
|(x)
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# File racc-1.7.3/lib/racc/grammar.rb, line 1072 def |(x) rule() | x.rule end