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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
builder.add_terminals('a', 'b', 'c')
builder.add_production('S' => ['A'])
builder.add_production('A' => %w(a A c))
builder.add_production('A' => ['b'])
return builder
end
end # module
Version data entries
15 entries across 15 versions & 1 rubygems