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31 lines
582 B
Ruby
31 lines
582 B
Ruby
require 'ripper'
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module Hamlit
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class RubyExpression < Ripper
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class ParseError < StandardError; end
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def self.syntax_error?(code)
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self.new(code).parse
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false
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rescue ParseError
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true
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end
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def self.string_literal?(code)
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return false if syntax_error?(code)
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type, instructions = Ripper.sexp(code)
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return false if type != :program
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return false if instructions.size > 1
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type, _ = instructions.first
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type == :string_literal
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end
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private
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def on_parse_error(*)
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raise ParseError
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end
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end
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end
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