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Contents
module Treetop module Compiler class Choice < ParsingExpression def compile(address, builder, parent_expression = nil) super begin_comment(self) use_vars :result, :start_index, :nested_results compile_alternatives(alternatives) end_comment(self) end def compile_alternatives(alternatives) obtain_new_subexpression_address alternatives.first.compile(subexpression_address, builder) accumulate_nested_result builder.if__ subexpression_success? do assign_result subexpression_result_var extend_result_with_declared_module extend_result_with_inline_module builder << "#{subexpression_result_var}.update_nested_results(#{nested_results_var})" end builder.else_ do if alternatives.size == 1 reset_index assign_failure start_index_var, nested_results_var else compile_alternatives(alternatives[1..-1]) end end end end end end
Version data entries
4 entries across 4 versions & 1 rubygems