Class: Twig::Node::Expression::Name

Inherits:
Base
  • Object
show all
Includes:
SupportDefinedTest
Defined in:
lib/twig/node/expression/name.rb

Direct Known Subclasses

AssignName, Variable::Context

Constant Summary collapse

SPECIAL_VARS = 
{
  '_self' => 'template_name',
  '_context' => 'context',
  '_charset' => 'env.charset',
}.freeze

Instance Attribute Summary

Attributes inherited from Base

#attributes, #lineno, #nodes, #source_context, #tag

Instance Method Summary collapse

Methods included from SupportDefinedTest

#define_test_enabled?, #enable_defined_test

Methods inherited from Base

#explicit_parentheses?, #set_explicit_parentheses

Methods inherited from Base

#empty?, #length, #template_name, #to_s

Constructor Details

#initialize(name, lineno) ⇒ Name

Returns a new instance of Name.

Parameters:

  • name (String)
  • lineno (Integer) 


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# File 'lib/twig/node/expression/name.rb', line 19

def initialize(name, lineno)
  super({}, {
    name:,
    is_defined_test: false,
    ignore_strict_check: false,
    always_defined: false,
  }, lineno)
end

Instance Method Details

#compile(compiler) ⇒ Object 



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# File 'lib/twig/node/expression/name.rb', line 28

def compile(compiler)
  name = attributes[:name]

  compiler.add_debug_info(self)

  check = "context.has?(:#{name})"
  get = "context.get(:#{name})"

  if define_test_enabled?
    if attributes[:always_defined] || SPECIAL_VARS.key?(name)
      compiler.repr(true)
    else
      compiler.raw(check)
    end
  elsif SPECIAL_VARS.key?(name)
    compiler.raw(SPECIAL_VARS[name])
  elsif attributes[:always_defined]
    compiler.
      raw(get)
  elsif attributes[:ignore_strict_check] || !compiler.environment.strict_variables?
    compiler.
      raw('(').
      raw(get).
      raw(' || nil)')
  else
    compiler.
      raw("(#{check}").
      raw(" ? #{get}").
      raw(' : raise(::Twig::Error::Runtime.new("Variable \"#{').
      string(name).
      raw('}\" does not exist.", ').
      repr(lineno).
      raw(', source_context)))')
  end
end