Module: DR::Eruby::ClassHelpers

Included in:
DR::Eruby
Defined in:
lib/dr/base/eruby.rb

Instance Method Summary collapse

Instance Method Details

#evaluate(_proc, context: Context.new, vars: nil, &b) ⇒ Object 



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# File 'lib/dr/base/eruby.rb', line 142

def evaluate(_proc, context: Context.new, vars: nil, &b)
  #we can only pass the block b when we get an UnboundMethod
  if _proc.is_a?(UnboundMethod)
    vars={} if _proc.arity > 0 and vars.nil?
    if !vars.nil?
      _proc.bind(context).call(vars,&b)
    else
      _proc.bind(context).call(&b)
    end
  elsif _proc.is_a?(String)
    #in this case we cannot pass vars
    warn "Cannot pass variables when _proc is a String" unless vars.nil?
    context.instance_eval(_proc)
  else
    if context.nil?
      if !vars.nil?
        _proc.to_proc.call(vars,&b)
      else
        _proc.to_proc(&b)
      end
    else
      warn "Cannot pass block in context.instance_eval" unless b.nil?
      if !vars.nil?
        context.instance_exec(vars,&_proc)
      else
        context.instance_eval(&_proc)
      end
    end
  end
end

#include(template, **opts) ⇒ Object 



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# File 'lib/dr/base/eruby.rb', line 173

def include(template, **opts)
  file=File.expand_path(template)
  Dir.chdir(File.dirname(file)) do |cwd|
    erb = Engine.new(File.read(file))
    #if context is not empty, then we probably want to evaluate
    if opts[:evaluate] or opts[:context]
      r=erb.evaluate(opts[:context])
    else
      bind=opts[:bind]||binding
      r=erb.result(bind)
    end
    #if using erubis, it is better to invoke the template in <%= =%> than
    #to use chomp=true
    r=r.chomp if opts[:chomp]
    return r
  end
end

#process_eruby(eruby_src, **opts, &b) ⇒ Object 



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# File 'lib/dr/base/eruby.rb', line 133

def process_eruby(eruby_src, **opts, &b)
  src=Eruby::Engine.new(eruby_src).src
  process_ruby(src, **opts, &b)
end

#process_ruby(src, src_info: nil, **opts, &b) ⇒ Object 



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# File 'lib/dr/base/eruby.rb', line 138

def process_ruby(src, src_info: nil, **opts, &b)
  Template.new(src, filename: src_info).evaluate(**opts, &b)
end