Class: Opal::Nodes::CallNode::DependencyResolver

Inherits:
Object
  • Object
show all
Defined in:
opal/lib/opal/nodes/call/require.rb

Instance Method Summary collapse

Constructor Details

#initialize(compiler, sexp, missing_dynamic_require = nil) ⇒ DependencyResolver

Returns a new instance of DependencyResolver.



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# File 'opal/lib/opal/nodes/call/require.rb', line 57

def initialize(compiler, sexp, missing_dynamic_require = nil)
  @compiler = compiler
  @sexp = sexp
  @missing_dynamic_require = missing_dynamic_require || @compiler.dynamic_require_severity
end

Instance Method Details

#expand_path(path, base = '') ⇒ Object 



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# File 'opal/lib/opal/nodes/call/require.rb', line 106

def expand_path(path, base = '')
  "#{base}/#{path}".split('/').each_with_object([]) do |part, p|
    if part == ''
      # we had '//', so ignore
    elsif part == '..'
      p.pop
    else
      p << part
    end
  end.join '/'
end

#handle_part(sexp, missing_dynamic_require = @missing_dynamic_require) ⇒ Object 



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# File 'opal/lib/opal/nodes/call/require.rb', line 67

def handle_part(sexp, missing_dynamic_require = @missing_dynamic_require)
  if sexp
    case sexp.type
    when :str
      return sexp.children[0]
    when :dstr
      return sexp.children.map { |i| handle_part i }.join
    when :begin
      return handle_part sexp.children[0] if sexp.children.length == 1
    when :send
      recv, meth, *args = sexp.children

      parts = args.map { |s| handle_part(s, :ignore) }

      return nil if parts.include? nil

      if recv.is_a?(::Opal::AST::Node) && recv.type == :const && recv.children.last == :File
        case meth
        when :expand_path
          return expand_path(*parts)
        when :join
          return expand_path parts.join('/')
        when :dirname
          return expand_path parts[0].split('/')[0...-1].join('/')
        end
      elsif meth == :__dir__
        return File.dirname(Opal::Compiler.module_name(@compiler.file))
      end
    end
  end

  case missing_dynamic_require
  when :error
    @compiler.error 'Cannot handle dynamic require', @sexp.line
  when :warning
    @compiler.warning 'Cannot handle dynamic require', @sexp.line
  end
end

#resolve ⇒ Object 



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# File 'opal/lib/opal/nodes/call/require.rb', line 63

def resolve
  handle_part @sexp
end