module Code
Constants
- VERSION
Public Class Methods
cruby_on_github(filename, line)
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# File lib/code.rb, line 61 def self.cruby_on_github(filename, line) "https://github.com/ruby/ruby/blob/ruby_#{RUBY_VERSION[0]}_#{RUBY_VERSION[2]}/#{filename}#L#{line}" end
display(string, language = :ruby)
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Syntax highlight code string
# File lib/code.rb, line 29 def self.display(string, language = :ruby) puts CodeRay.scan(string, language).term end
for(object = self, method_name)
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API for end user
# File lib/code.rb, line 17 def self.for(object = self, method_name) m = object.method(method_name) begin from_ruby(m) rescue MethodSource::SourceNotFoundError from_docs(m) end rescue NameError, NotFound warn $!.message end
from_docs(m)
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Find C definition of Code
# File lib/code.rb, line 45 def self.from_docs(m) if RUBY_ENGINE != "ruby" raise Code::NotFound, "Method source not found for non-CRuby." elsif !defined?(CoreDocs) raise Code::NotFound, 'Method source not found. Might be possible with core_docs gem' elsif !(method_info = CoreDocs::MethodInfo.info_for(m)) raise Code::NotFound, 'Method source not found.' else source = method_info.source location = "//\n// #{cruby_on_github(method_info.file, method_info.line)}\n//\n" comment = method_info.docstring ? method_info.docstring.gsub(/^/, '// ') + "\n" : "" display location + comment + source, :c end end
from_ruby(m)
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Find Ruby definition of code
# File lib/code.rb, line 34 def self.from_ruby(m) source = m.source || "" indent = source.match(/\A +/) source = source.gsub(/^#{indent}/,"") comment = m.comment && !m.comment.empty? ? "#{ m.comment }" : "" location = m.source_location ? "#\n# #{ m.source_location*':' }\n#\n" : "" display location + comment + source end