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Size: 494 Bytes
Versions: 8
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Stored size: 494 Bytes
Contents
# Load the builder class
require_relative '../../../lib/rley/syntax/grammar_builder'
module GrammarABCHelper
# Factory method. Creates a grammar builder for a simple grammar.
# (based on example in N. Wirth "Compiler Construction" book, p. 6)
def grammar_abc_builder()
builder = Rley::Syntax::GrammarBuilder.new do
add_terminals('a', 'b', 'c')
rule 'S' => 'A'
rule 'A' => %w(a A c)
rule 'A' => 'b'
end
return builder
end
end # module
# End of file
Version data entries
8 entries across 8 versions & 1 rubygems