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