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|
module RSpec
module Parameterized
module Core
# Proxy class for parser and prism
module CompositeParser
# @param obj [Object]
# @return [String]
# @raise [RSpec::Parameterized::Core::ParserSyntaxError]
def self.to_raw_source(obj)
return to_raw_source_with_prism(obj) if use_prism?
to_raw_source_with_parser(obj)
end
# Whether use parser or prism
#
# @return [true] Use prism
# @return [false] Use parser
def self.use_prism?
Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.4.0")
end
# @param obj [Object]
# @return [String]
# @raise [RSpec::Parameterized::Core::ParserSyntaxError]
def self.to_raw_source_with_parser(obj)
obj.is_a?(Proc) ? obj.to_raw_source : obj.inspect
rescue Parser::SyntaxError
raise ParserSyntaxError
end
private_class_method :to_raw_source_with_parser
# @param obj [Object]
# @return [String]
def self.to_raw_source_with_prism(obj)
return obj.inspect unless obj.is_a?(Proc)
filename, linenum = obj.source_location
ast = parse_with_prism(filename, linenum)
return "" unless ast
ast.source.source.strip
end
private_class_method :to_raw_source_with_prism
# @param filename [String]
# @param linenum [Integer]
#
# @return [Prism::ParseResult,nil]
def self.parse_with_prism(filename, linenum)
buf = []
File.open(filename, "rb").each_with_index do |line, index|
next if index < linenum - 1
buf << line
ret = Prism.parse(buf.join)
return ret if ret.success?
end
nil
end
private_class_method :parse_with_prism
end
end
end
end
if RSpec::Parameterized::Core::CompositeParser.use_prism?
require 'prism'
else
require 'parser'
require 'unparser'
require 'proc_to_ast'
end
|
