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Contents
# frozen_string_literal: true
require_relative "../conversion_error"
module ERBLint
module Linters
module ArgumentMappers
module Helpers
# provides helpers to identify and deal with ERB blocks.
class ErbBlock
INTERPOLATION_REGEX = /^<%=(?<rb>.*)%>$/.freeze
def raise_if_erb_block(attribute)
raise_error(attribute) if any?(attribute)
end
def convert(attribute)
raise_error(attribute) unless interpolation?(attribute)
if any?(attribute)
convert_interpolation(attribute)
else
attribute.value.to_json
end
end
private
def interpolation?(attribute)
erb_blocks(attribute).all? do |erb|
# If the blocks does not have an indicator, it's not an interpolation.
erb.children.to_a.compact.any? { |node| node.type == :indicator }
end
end
def raise_error(attribute)
raise ERBLint::Linters::ArgumentMappers::ConversionError, "Cannot convert attribute \"#{attribute.name}\" because its value contains an erb block"
end
def any?(attribute)
erb_blocks(attribute).any?
end
def basic?(attribute)
return false if erb_blocks(attribute).size != 1
attribute.value.match?(INTERPOLATION_REGEX)
end
def erb_blocks(attribute)
(attribute.value_node&.children || []).select { |n| n.try(:type) == :erb }
end
def convert_interpolation(attribute)
if basic?(attribute)
m = attribute.value.match(INTERPOLATION_REGEX)
return m[:rb].strip
end
# we use `source` instead of `value` because it does not convert encoded HTML entities.
attribute.value_node.loc.source.gsub("<%=", '#{').gsub("%>", "}")
end
end
end
end
end
end
Version data entries
209 entries across 209 versions & 2 rubygems