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ffi-clang/lib/ffi/clang/source_range.rb

60 lines
1.3 KiB
Ruby

# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2010, by Jari Bakken.
# Copyright, 2012, by Hal Brodigan.
# Copyright, 2013-2022, by Samuel Williams.
# Copyright, 2013, by Garry Marshall.
# Copyright, 2014, by Masahiro Sano.
require_relative 'lib/source_range'
module FFI
module Clang
class SourceRange
def self.null_range
SourceRange.new Lib.get_null_range
end
def initialize(range_or_begin_location, end_location = nil)
if end_location.nil?
@range = range_or_begin_location
else
@range = Lib.get_range(range_or_begin_location.location, end_location.location)
end
end
def start
@start ||= ExpansionLocation.new(Lib.get_range_start @range)
end
def end
@end ||= ExpansionLocation.new(Lib.get_range_end @range)
end
# The size, in bytes, of the source range.
def bytesize
self.end.offset - self.start.offset
end
# Read the part of the source file referred to by this source range.
def text
::File.open(self.start.file, "r") do |file|
file.seek(self.start.offset)
return file.read(self.bytesize)
end
end
def null?
Lib.range_is_null(@range) != 0
end
attr_reader :range
def ==(other)
Lib.equal_range(@range, other.range) != 0
end
end
end
end