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module Lrama
class Command
LRAMA_LIB = File.realpath(File.join(File.dirname(__FILE__)))
STDLIB_FILE_PATH = File.join(LRAMA_LIB, 'grammar', 'stdlib.y')
def run(argv)
begin
options = OptionParser.new.parse(argv)
rescue => e
message = e.message
message = message.gsub(/.+/, "\e[1m\\&\e[m") if Exception.to_tty?
abort message
end
Report::Duration.enable if options.trace_opts[:time]
warning = Lrama::Warning.new
text = options.y.read
options.y.close if options.y != STDIN
begin
grammar = Lrama::Parser.new(text, options.grammar_file, options.debug).parse
unless grammar.no_stdlib
stdlib_grammar = Lrama::Parser.new(File.read(STDLIB_FILE_PATH), STDLIB_FILE_PATH, options.debug).parse
grammar.insert_before_parameterizing_rules(stdlib_grammar.parameterizing_rules)
end
grammar.prepare
grammar.validate!
rescue => e
raise e if options.debug
message = e.message
message = message.gsub(/.+/, "\e[1m\\&\e[m") if Exception.to_tty?
abort message
end
states = Lrama::States.new(grammar, warning, trace_state: (options.trace_opts[:automaton] || options.trace_opts[:closure]))
states.compute
context = Lrama::Context.new(states)
if options.report_file
reporter = Lrama::StatesReporter.new(states)
File.open(options.report_file, "w+") do |f|
reporter.report(f, **options.report_opts)
end
end
if options.trace_opts && options.trace_opts[:rules]
puts "Grammar rules:"
puts grammar.rules
end
if options.trace_opts && options.trace_opts[:actions]
puts "Grammar rules with actions:"
grammar.rules.each { |rule| puts rule.with_actions }
end
File.open(options.outfile, "w+") do |f|
Lrama::Output.new(
out: f,
output_file_path: options.outfile,
template_name: options.skeleton,
grammar_file_path: options.grammar_file,
header_file_path: options.header_file,
context: context,
grammar: grammar,
error_recovery: options.error_recovery,
).render
end
if warning.has_error?
exit false
end
end
end
end
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