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Contents
require 'ripper'
module ExpressTemplates
module Template
class Handler
def self.call(template)
new.call(template)
end
def call(template)
# returns a string to be eval'd
source = "(#{ExpressTemplates.compile(template)}).html_safe"
warn_contains_logic(source) if ENV['NO_TEMPLATE_WARN'].nil? # pass the source code
source
end
def warn_contains_logic(compiled_template)
keywords = %w(if until unless case for do loop while) # array of conditional keywords
tokens = []
if Ripper.lex(compiled_template).select do |element| # since it outputs an array [[line, col], type, token]
element[1]==:on_kw # type must match ':on_kw' type (type is keyword)
end.each { |match| tokens.push(match) if keywords.include? match[2] } # check if token is in given /keyword/ array, then push to new array match
tokens.each do |first|
warn "PAGE TEMPLATE INCLUDES #{first[2]} STATEMENT AT LINE #{first[0][0]}: #{first}\n#{compiled_template}" # warn on first occurence of conditional logic
end
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems