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require_relative "formatter"
module ErrorHighlight
module CoreExt
private def generate_snippet
locs = backtrace_locations
return "" unless locs
loc = locs.first
return "" unless loc
begin
node = RubyVM::AbstractSyntaxTree.of(loc, keep_script_lines: true)
opts = {}
case self
when NoMethodError, NameError
opts[:point_type] = :name
opts[:name] = name
when TypeError, ArgumentError
opts[:point_type] = :args
end
spot = ErrorHighlight.spot(node, **opts)
rescue SyntaxError
rescue SystemCallError # file not found or something
rescue ArgumentError # eval'ed code
end
if spot
return ErrorHighlight.formatter.message_for(spot)
end
""
end
if Exception.method_defined?(:detailed_message)
def detailed_message(highlight: false, error_highlight: true, **)
return super unless error_highlight
snippet = generate_snippet
if highlight
snippet = snippet.gsub(/.+/) { "\e[1m" + $& + "\e[m" }
end
super + snippet
end
else
# This is a marker to let `DidYouMean::Correctable#original_message` skip
# the following method definition of `to_s`.
# See https://github.com/ruby/did_you_mean/pull/152
SKIP_TO_S_FOR_SUPER_LOOKUP = true
private_constant :SKIP_TO_S_FOR_SUPER_LOOKUP
def to_s
msg = super
snippet = generate_snippet
if snippet != "" && !msg.include?(snippet)
msg + snippet
else
msg
end
end
end
end
NameError.prepend(CoreExt)
# The extension for TypeError/ArgumentError is temporarily disabled due to many test failures
#TypeError.prepend(CoreExt)
#ArgumentError.prepend(CoreExt)
end
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