# begin: ragel
begin¶ ↑
%%{
machine bel; include 'common.rl'; include 'identifier.rl'; include 'string.rl'; action add_name { trace('DEFINE_NAMESPACE add_name') name = @buffers.delete(:ident) @buffers[:namespace_definition_name] = name } action add_string_value { trace('DEFINE_NAMESPACE add_string_value') string_node = @buffers.delete(:string) domain = @buffers.delete(:namespace_definition_domain) domain <<= string_node leaf = domain(domain) leaf.complete = string_node.complete @buffers[:namespace_definition_domain] = leaf } action add_uri_domain { trace('DEFINE_NAMESPACE add_uri_domain') @buffers[:namespace_definition_domain] = uri() } action add_url_domain { trace('DEFINE_NAMESPACE add_url_domain') @buffers[:namespace_definition_domain] = url() } action define_namespace_end { trace('DEFINE_NAMESPACE define_namespace_end') namespace_definition_node = namespace_definition() name = @buffers.delete(:namespace_definition_name) namespace_definition_node <<= keyword(name) domain = @buffers.delete(:namespace_definition_domain) unless domain.nil? namespace_definition_node <<= domain namespace_definition_node.complete = domain.complete end @buffers[:namespace_definition] = namespace_definition_node } action yield_define_namespace { trace('DEFINE_NAMESPACE yield_define_namespace') yield @buffers[:namespace_definition] } action define_namespace_node_eof { trace('DEFINE_NAMESPACE define_namespace_node_eof') leaf = url() string_node = @buffers.delete(:string) unless string_node.nil? leaf <<= string_node leaf.complete = string_node.complete end domain_node = domain(leaf) domain_node.complete = leaf.complete namespace_definition_node = namespace_definition(domain_node) namespace_definition_node.complete = domain_node.complete yield namespace_definition_node } string_value = a_string %add_string_value ; uri_domain = KW_URI %add_uri_domain ; url_domain = KW_URL %add_url_domain ; define_namespace_node := DEFINE_NAMESPACE SP+ an_ident %add_name SP+ KW_AS SP+ (url_domain | uri_domain) SP+ string_value @eof(define_namespace_node_eof) %define_namespace_end %yield_define_namespace NL ;
}%%
end¶ ↑
# end: ragel
require_relative '../ast/node' require_relative '../mixin/buffer' require_relative '../nonblocking_io_wrapper' require_relative '../tracer'
module BELParser
module Parsers module BELScript module DefineNamespace class << self MAX_LENGTH = 1024 * 128 # 128K def parse(content) return nil unless content Parser.new(content).each do |obj| yield obj end end end private class Parser include Enumerable include BELParser::Parsers::Buffer include BELParser::Parsers::AST::Sexp include BELParser::Parsers::Tracer def initialize(content) @content = content # begin: ragel %% write data; # end: ragel end def each @buffers = {} @incomplete = {} stack = [] data = @content.unpack('C*') p = 0 pe = data.length eof = data.length # begin: ragel %% write init; %% write exec; # end: ragel end end end end end
end
if __FILE__ == $0
$stdin.each_line do |line| BELParser::Parsers::BELScript::DefineNamespace.parse(line) { |obj| puts obj.inspect } end
end
# vim: ft=ruby ts=2 sw=2: # encoding: utf-8