Sha256: 495b4ab31e172487a145512aefac7f9cfd0b70a08ff0d287d6214cd7cab89f45
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Size: 1.12 KB
Versions: 18
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Stored size: 1.12 KB
Contents
#
# bitclust/parseutils.rb
#
# Copyright (c) 2006-2007 Minero Aoki
#
# This program is free software.
# You can distribute/modify this program under the Ruby License.
#
require 'bitclust/exception'
class String # reopen
attr_accessor :location
end
module BitClust
# Provides line-wise access to a file with :file and :line.
# Used by Preprocessor
class LineStream
def initialize(f)
@f = f
end
def gets
line = @f.gets
return nil unless line
if @f.respond_to?(:path)
path = @f.path
else
path = nil
end
line.location = Location.new(path, @f.lineno)
line
end
end
# Encapsulates :file and :line.
# Used by LineStream(above)
class Location
def initialize(file, line)
@file = file
@line = line
end
attr_reader :file
attr_reader :line
def to_s
"#{@file}:#{@line}"
end
def inspect
"\#<#{self.class} #{@file}:#{@line}>"
end
end
# Utilities for parsing
module ParseUtils
def parse_error(msg, line)
raise ParseError, "#{line.location}: #{msg}: #{line.inspect}"
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems