class Prism::Translation::RubyParser::Compiler

A prism visitor that builds Sexp objects.

Attributes

file[R]

This is the name of the file that we are compiling. We set it on every Sexp object that is generated, and also use it to compile __FILE__ nodes.

in_def[R]

Class variables will change their type based on if they are inside of a method definition or not, so we need to track that state.

in_pattern[R]

Some nodes will change their representation if they are inside of a pattern, so we need to track that state.

Public Class Methods

new(file, in_def: false, in_pattern: false) click to toggle source

Initialize a new compiler with the given file name.

# File prism/translation/ruby_parser.rb, line 31
def initialize(file, in_def: false, in_pattern: false)
  @file = file
  @in_def = in_def
  @in_pattern = in_pattern
end

Public Instance Methods

visit_alias_global_variable_node(node) click to toggle source

alias $foo $bar ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 45
def visit_alias_global_variable_node(node)
  s(node, :valias, node.new_name.name, node.old_name.name)
end
visit_alias_method_node(node) click to toggle source

alias foo bar ^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 39
def visit_alias_method_node(node)
  s(node, :alias, visit(node.new_name), visit(node.old_name))
end
visit_alternation_pattern_node(node) click to toggle source

foo => bar | baz

^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 51
def visit_alternation_pattern_node(node)
  s(node, :or, visit(node.left), visit(node.right))
end
visit_and_node(node) click to toggle source

a and b ^^^^^^^

# File prism/translation/ruby_parser.rb, line 57
def visit_and_node(node)
  s(node, :and, visit(node.left), visit(node.right))
end
visit_arguments_node(node) click to toggle source

foo(bar)

^^^
# File prism/translation/ruby_parser.rb, line 96
def visit_arguments_node(node)
  raise "Cannot visit arguments directly"
end
visit_array_node(node) click to toggle source

^^

# File prism/translation/ruby_parser.rb, line 63
def visit_array_node(node)
  if in_pattern
    s(node, :array_pat, nil).concat(visit_all(node.elements))
  else
    s(node, :array).concat(visit_all(node.elements))
  end
end
visit_array_pattern_node(node) click to toggle source

foo => [bar]

^^^^^
# File prism/translation/ruby_parser.rb, line 73
def visit_array_pattern_node(node)
  if node.constant.nil? && node.requireds.empty? && node.rest.nil? && node.posts.empty?
    s(node, :array_pat)
  else
    result = s(node, :array_pat, visit_pattern_constant(node.constant)).concat(visit_all(node.requireds))

    case node.rest
    when SplatNode
      result << :"*#{node.rest.expression&.name}"
    when ImplicitRestNode
      result << :*

      # This doesn't make any sense at all, but since we're trying to
      # replicate the behavior directly, we'll copy it.
      result.line(666)
    end

    result.concat(visit_all(node.posts))
  end
end
visit_assoc_node(node) click to toggle source

{ a: 1 }

^^^^
# File prism/translation/ruby_parser.rb, line 102
def visit_assoc_node(node)
  [visit(node.key), visit(node.value)]
end
visit_assoc_splat_node(node) click to toggle source

def foo(**); bar(**); end

^^

{ **foo }

^^^^^
# File prism/translation/ruby_parser.rb, line 111
def visit_assoc_splat_node(node)
  if node.value.nil?
    [s(node, :kwsplat)]
  else
    [s(node, :kwsplat, visit(node.value))]
  end
end
visit_back_reference_read_node(node) click to toggle source

$+ ^^

# File prism/translation/ruby_parser.rb, line 121
def visit_back_reference_read_node(node)
  s(node, :back_ref, node.name.name.delete_prefix("$").to_sym)
end
visit_begin_node(node) click to toggle source

begin end ^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 127
def visit_begin_node(node)
  result = node.statements.nil? ? s(node, :nil) : visit(node.statements)

  if !node.rescue_clause.nil?
    if !node.statements.nil?
      result = s(node.statements, :rescue, result, visit(node.rescue_clause))
    else
      result = s(node.rescue_clause, :rescue, visit(node.rescue_clause))
    end

    current = node.rescue_clause
    until (current = current.consequent).nil?
      result << visit(current)
    end
  end

  if !node.else_clause&.statements.nil?
    result << visit(node.else_clause)
  end

  if !node.ensure_clause.nil?
    if !node.statements.nil? || !node.rescue_clause.nil? || !node.else_clause.nil?
      result = s(node.statements || node.rescue_clause || node.else_clause || node.ensure_clause, :ensure, result, visit(node.ensure_clause))
    else
      result = s(node.ensure_clause, :ensure, visit(node.ensure_clause))
    end
  end

  result
end
visit_block_argument_node(node) click to toggle source

foo(&bar)

^^^^
# File prism/translation/ruby_parser.rb, line 160
def visit_block_argument_node(node)
  s(node, :block_pass).tap do |result|
    result << visit(node.expression) unless node.expression.nil?
  end
end
visit_block_local_variable_node(node) click to toggle source

foo { |; bar| }

^^^
# File prism/translation/ruby_parser.rb, line 168
def visit_block_local_variable_node(node)
  node.name
end
visit_block_node(node) click to toggle source

A block on a keyword or method call.

# File prism/translation/ruby_parser.rb, line 173
def visit_block_node(node)
  s(node, :block_pass, visit(node.expression))
end
visit_block_parameter_node(node) click to toggle source

def foo(&bar); end

^^^^
# File prism/translation/ruby_parser.rb, line 179
def visit_block_parameter_node(node)
  :"&#{node.name}"
end
visit_block_parameters_node(node) click to toggle source

A block’s parameters.

# File prism/translation/ruby_parser.rb, line 184
def visit_block_parameters_node(node)
  # If this block parameters has no parameters and is using pipes, then
  # it inherits its location from its shadow locals, even if they're not
  # on the same lines as the pipes.
  shadow_loc = true

  result =
    if node.parameters.nil?
      s(node, :args)
    else
      shadow_loc = false
      visit(node.parameters)
    end

  if node.opening == "("
    result.line = node.opening_loc.start_line
    result.line_max = node.closing_loc.end_line
    shadow_loc = false
  end

  if node.locals.any?
    shadow = s(node, :shadow).concat(visit_all(node.locals))
    shadow.line = node.locals.first.location.start_line
    shadow.line_max = node.locals.last.location.end_line
    result << shadow

    if shadow_loc
      result.line = shadow.line
      result.line_max = shadow.line_max
    end
  end

  result
end
visit_break_node(node) click to toggle source

break ^^^^^

break foo ^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 224
def visit_break_node(node)
  if node.arguments.nil?
    s(node, :break)
  elsif node.arguments.arguments.length == 1
    s(node, :break, visit(node.arguments.arguments.first))
  else
    s(node, :break, s(node.arguments, :array).concat(visit_all(node.arguments.arguments)))
  end
end
visit_call_and_write_node(node) click to toggle source

foo.bar &&= baz ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 287
def visit_call_and_write_node(node)
  if op_asgn?(node)
    s(node, op_asgn_type(node, :op_asgn), visit(node.receiver), visit_write_value(node.value), node.read_name, :"&&")
  else
    s(node, op_asgn_type(node, :op_asgn2), visit(node.receiver), node.write_name, :"&&", visit_write_value(node.value))
  end
end
visit_call_node(node) click to toggle source

foo ^^^

foo.bar ^^^^^^^

foo.bar() {} ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 242
def visit_call_node(node)
  case node.name
  when :!~
    return s(node, :not, visit(node.copy(name: :"=~")))
  when :=~
    if node.arguments&.arguments&.length == 1 && node.block.nil?
      case node.receiver
      when StringNode
        return s(node, :match3, visit(node.arguments.arguments.first), visit(node.receiver))
      when RegularExpressionNode, InterpolatedRegularExpressionNode
        return s(node, :match2, visit(node.receiver), visit(node.arguments.arguments.first))
      end
    end
  end

  type = node.attribute_write? ? :attrasgn : :call
  type = :"safe_#{type}" if node.safe_navigation?

  arguments = node.arguments&.arguments || []
  write_value = arguments.pop if type == :attrasgn
  block = node.block

  if block.is_a?(BlockArgumentNode)
    arguments << block
    block = nil
  end

  result = s(node, type, visit(node.receiver), node.name).concat(visit_all(arguments))
  result << visit_write_value(write_value) unless write_value.nil?

  visit_block(node, result, block)
end
visit_call_operator_write_node(node) click to toggle source

foo.bar += baz ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 277
def visit_call_operator_write_node(node)
  if op_asgn?(node)
    s(node, op_asgn_type(node, :op_asgn), visit(node.receiver), visit_write_value(node.value), node.read_name, node.binary_operator)
  else
    s(node, op_asgn_type(node, :op_asgn2), visit(node.receiver), node.write_name, node.binary_operator, visit_write_value(node.value))
  end
end
visit_call_or_write_node(node) click to toggle source

foo.bar ||= baz ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 297
def visit_call_or_write_node(node)
  if op_asgn?(node)
    s(node, op_asgn_type(node, :op_asgn), visit(node.receiver), visit_write_value(node.value), node.read_name, :"||")
  else
    s(node, op_asgn_type(node, :op_asgn2), visit(node.receiver), node.write_name, :"||", visit_write_value(node.value))
  end
end
visit_call_target_node(node) click to toggle source

foo.bar, = 1 ^^^^^^^

# File prism/translation/ruby_parser.rb, line 320
def visit_call_target_node(node)
  s(node, :attrasgn, visit(node.receiver), node.name)
end
visit_capture_pattern_node(node) click to toggle source

foo => bar => baz

^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 326
def visit_capture_pattern_node(node)
  visit(node.target) << visit(node.value)
end
visit_case_match_node(node) click to toggle source

case foo; in bar; end ^^^^^^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 338
def visit_case_match_node(node)
  s(node, :case, visit(node.predicate)).concat(visit_all(node.conditions)) << visit(node.consequent)
end
visit_case_node(node) click to toggle source

case foo; when bar; end ^^^^^^^^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 332
def visit_case_node(node)
  s(node, :case, visit(node.predicate)).concat(visit_all(node.conditions)) << visit(node.consequent)
end
visit_class_node(node) click to toggle source

class Foo; end ^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 344
def visit_class_node(node)
  name =
    if node.constant_path.is_a?(ConstantReadNode)
      node.name
    else
      visit(node.constant_path)
    end

  if node.body.nil?
    s(node, :class, name, visit(node.superclass))
  elsif node.body.is_a?(StatementsNode)
    compiler = copy_compiler(in_def: false)
    s(node, :class, name, visit(node.superclass)).concat(node.body.body.map { |child| child.accept(compiler) })
  else
    s(node, :class, name, visit(node.superclass), node.body.accept(copy_compiler(in_def: false)))
  end
end
visit_class_variable_and_write_node(node) click to toggle source

@@foo &&= bar ^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 385
def visit_class_variable_and_write_node(node)
  s(node, :op_asgn_and, s(node, :cvar, node.name), s(node, class_variable_write_type, node.name, visit_write_value(node.value)))
end
visit_class_variable_operator_write_node(node) click to toggle source

@@foo += bar ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 379
def visit_class_variable_operator_write_node(node)
  s(node, class_variable_write_type, node.name, s(node, :call, s(node, :cvar, node.name), node.binary_operator, visit_write_value(node.value)))
end
visit_class_variable_or_write_node(node) click to toggle source

@@foo ||= bar ^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 391
def visit_class_variable_or_write_node(node)
  s(node, :op_asgn_or, s(node, :cvar, node.name), s(node, class_variable_write_type, node.name, visit_write_value(node.value)))
end
visit_class_variable_read_node(node) click to toggle source

@@foo ^^^^^

# File prism/translation/ruby_parser.rb, line 364
def visit_class_variable_read_node(node)
  s(node, :cvar, node.name)
end
visit_class_variable_target_node(node) click to toggle source

@@foo, = bar ^^^^^

# File prism/translation/ruby_parser.rb, line 397
def visit_class_variable_target_node(node)
  s(node, class_variable_write_type, node.name)
end
visit_class_variable_write_node(node) click to toggle source

@@foo = 1 ^^^^^^^^^

@@foo, @@bar = 1 ^^^^^ ^^^^^

# File prism/translation/ruby_parser.rb, line 373
def visit_class_variable_write_node(node)
  s(node, class_variable_write_type, node.name, visit_write_value(node.value))
end
visit_constant_and_write_node(node) click to toggle source

Foo &&= bar ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 430
def visit_constant_and_write_node(node)
  s(node, :op_asgn_and, s(node, :const, node.name), s(node, :cdecl, node.name, visit(node.value)))
end
visit_constant_operator_write_node(node) click to toggle source

Foo += bar ^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 424
def visit_constant_operator_write_node(node)
  s(node, :cdecl, node.name, s(node, :call, s(node, :const, node.name), node.binary_operator, visit_write_value(node.value)))
end
visit_constant_or_write_node(node) click to toggle source

Foo ||= bar ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 436
def visit_constant_or_write_node(node)
  s(node, :op_asgn_or, s(node, :const, node.name), s(node, :cdecl, node.name, visit(node.value)))
end
visit_constant_path_and_write_node(node) click to toggle source

Foo::Bar &&= baz ^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 473
def visit_constant_path_and_write_node(node)
  s(node, :op_asgn_and, visit(node.target), visit_write_value(node.value))
end
visit_constant_path_node(node) click to toggle source

Foo::Bar ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 448
def visit_constant_path_node(node)
  if node.parent.nil?
    s(node, :colon3, node.name)
  else
    s(node, :colon2, visit(node.parent), node.name)
  end
end
visit_constant_path_operator_write_node(node) click to toggle source

Foo::Bar += baz ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 467
def visit_constant_path_operator_write_node(node)
  s(node, :op_asgn, visit(node.target), node.binary_operator, visit_write_value(node.value))
end
visit_constant_path_or_write_node(node) click to toggle source

Foo::Bar ||= baz ^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 479
def visit_constant_path_or_write_node(node)
  s(node, :op_asgn_or, visit(node.target), visit_write_value(node.value))
end
visit_constant_path_target_node(node) click to toggle source

Foo::Bar, = baz ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 485
def visit_constant_path_target_node(node)
  inner =
    if node.parent.nil?
      s(node, :colon3, node.child.name)
    else
      s(node, :colon2, visit(node.parent), node.child.name)
    end

  s(node, :const, inner)
end
visit_constant_path_write_node(node) click to toggle source

Foo::Bar = 1 ^^^^^^^^^^^^

Foo::Foo, Bar::Bar = 1 ^^^^^^^^ ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 461
def visit_constant_path_write_node(node)
  s(node, :cdecl, visit(node.target), visit_write_value(node.value))
end
visit_constant_read_node(node) click to toggle source

Foo ^^^

# File prism/translation/ruby_parser.rb, line 409
def visit_constant_read_node(node)
  s(node, :const, node.name)
end
visit_constant_target_node(node) click to toggle source

Foo, = bar ^^^

# File prism/translation/ruby_parser.rb, line 442
def visit_constant_target_node(node)
  s(node, :cdecl, node.name)
end
visit_constant_write_node(node) click to toggle source

Foo = 1 ^^^^^^^

Foo, Bar = 1 ^^^ ^^^

# File prism/translation/ruby_parser.rb, line 418
def visit_constant_write_node(node)
  s(node, :cdecl, node.name, visit_write_value(node.value))
end
visit_def_node(node) click to toggle source

def foo; end ^^^^^^^^^^^^

def self.foo; end ^^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 501
def visit_def_node(node)
  name = node.name_loc.slice.to_sym
  result =
    if node.receiver.nil?
      s(node, :defn, name)
    else
      s(node, :defs, visit(node.receiver), name)
    end

  result.line(node.name_loc.start_line)
  if node.parameters.nil?
    result << s(node, :args).line(node.name_loc.start_line)
  else
    result << visit(node.parameters)
  end

  if node.body.nil?
    result << s(node, :nil)
  elsif node.body.is_a?(StatementsNode)
    compiler = copy_compiler(in_def: true)
    result.concat(node.body.body.map { |child| child.accept(compiler) })
  else
    result << node.body.accept(copy_compiler(in_def: true))
  end
end
visit_defined_node(node) click to toggle source

defined? a ^^^^^^^^^^

defined?(a) ^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 532
def visit_defined_node(node)
  s(node, :defined, visit(node.value))
end
visit_else_node(node) click to toggle source

if foo then bar else baz end

^^^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 538
def visit_else_node(node)
  visit(node.statements)
end
visit_embedded_statements_node(node) click to toggle source

“foo #{bar}”

^^^^^^
# File prism/translation/ruby_parser.rb, line 544
def visit_embedded_statements_node(node)
  result = s(node, :evstr)
  result << visit(node.statements) unless node.statements.nil?
  result
end
visit_embedded_variable_node(node) click to toggle source

“foo #@bar”

^^^^^
# File prism/translation/ruby_parser.rb, line 552
def visit_embedded_variable_node(node)
  s(node, :evstr, visit(node.variable))
end
visit_ensure_node(node) click to toggle source

begin; foo; ensure; bar; end

^^^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 558
def visit_ensure_node(node)
  node.statements.nil? ? s(node, :nil) : visit(node.statements)
end
visit_false_node(node) click to toggle source

false ^^^^^

# File prism/translation/ruby_parser.rb, line 564
def visit_false_node(node)
  s(node, :false)
end
visit_find_pattern_node(node) click to toggle source

foo => [*, bar, *]

^^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 570
def visit_find_pattern_node(node)
  s(node, :find_pat, visit_pattern_constant(node.constant), :"*#{node.left.expression&.name}", *visit_all(node.requireds), :"*#{node.right.expression&.name}")
end
visit_flip_flop_node(node) click to toggle source

if foo .. bar; end

^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 576
def visit_flip_flop_node(node)
  if node.left.is_a?(IntegerNode) && node.right.is_a?(IntegerNode)
    s(node, :lit, Range.new(node.left.value, node.right.value, node.exclude_end?))
  else
    s(node, node.exclude_end? ? :flip3 : :flip2, visit(node.left), visit(node.right))
  end
end
visit_float_node(node) click to toggle source

1.0 ^^^

# File prism/translation/ruby_parser.rb, line 586
def visit_float_node(node)
  s(node, :lit, node.value)
end
visit_for_node(node) click to toggle source

for foo in bar do end ^^^^^^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 592
def visit_for_node(node)
  s(node, :for, visit(node.collection), visit(node.index), visit(node.statements))
end
visit_forwarding_arguments_node(node) click to toggle source

def foo(…); bar(…); end

^^^
# File prism/translation/ruby_parser.rb, line 598
def visit_forwarding_arguments_node(node)
  s(node, :forward_args)
end
visit_forwarding_parameter_node(node) click to toggle source

def foo(…); end

^^^
# File prism/translation/ruby_parser.rb, line 604
def visit_forwarding_parameter_node(node)
  s(node, :forward_args)
end
visit_forwarding_super_node(node) click to toggle source

super ^^^^^

super {} ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 613
def visit_forwarding_super_node(node)
  visit_block(node, s(node, :zsuper), node.block)
end
visit_global_variable_and_write_node(node) click to toggle source

$foo &&= bar ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 640
def visit_global_variable_and_write_node(node)
  s(node, :op_asgn_and, s(node, :gvar, node.name), s(node, :gasgn, node.name, visit_write_value(node.value)))
end
visit_global_variable_operator_write_node(node) click to toggle source

$foo += bar ^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 634
def visit_global_variable_operator_write_node(node)
  s(node, :gasgn, node.name, s(node, :call, s(node, :gvar, node.name), node.binary_operator, visit(node.value)))
end
visit_global_variable_or_write_node(node) click to toggle source

$foo ||= bar ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 646
def visit_global_variable_or_write_node(node)
  s(node, :op_asgn_or, s(node, :gvar, node.name), s(node, :gasgn, node.name, visit_write_value(node.value)))
end
visit_global_variable_read_node(node) click to toggle source

$foo ^^^^

# File prism/translation/ruby_parser.rb, line 619
def visit_global_variable_read_node(node)
  s(node, :gvar, node.name)
end
visit_global_variable_target_node(node) click to toggle source

$foo, = bar ^^^^

# File prism/translation/ruby_parser.rb, line 652
def visit_global_variable_target_node(node)
  s(node, :gasgn, node.name)
end
visit_global_variable_write_node(node) click to toggle source

$foo = 1 ^^^^^^^^

$foo, $bar = 1 ^^^^ ^^^^

# File prism/translation/ruby_parser.rb, line 628
def visit_global_variable_write_node(node)
  s(node, :gasgn, node.name, visit_write_value(node.value))
end
visit_hash_node(node) click to toggle source

{} ^^

# File prism/translation/ruby_parser.rb, line 658
def visit_hash_node(node)
  s(node, :hash).concat(node.elements.flat_map { |element| visit(element) })
end
visit_hash_pattern_node(node) click to toggle source

foo => {}

^^
# File prism/translation/ruby_parser.rb, line 664
def visit_hash_pattern_node(node)
  result = s(node, :hash_pat, visit_pattern_constant(node.constant)).concat(node.elements.flat_map { |element| visit(element) })

  case node.rest
  when AssocSplatNode
    result << s(node.rest, :kwrest, :"**#{node.rest.value&.name}")
  when NoKeywordsParameterNode
    result << visit(node.rest)
  end

  result
end
visit_if_node(node) click to toggle source

if foo then bar end ^^^^^^^^^^^^^^^^^^^

bar if foo ^^^^^^^^^^

foo ? bar : baz ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 685
def visit_if_node(node)
  s(node, :if, visit(node.predicate), visit(node.statements), visit(node.consequent))
end
visit_imaginary_node(node) click to toggle source

1i

# File prism/translation/ruby_parser.rb, line 690
def visit_imaginary_node(node)
  s(node, :lit, node.value)
end
visit_implicit_node(node) click to toggle source

{ foo: }

^^^^
# File prism/translation/ruby_parser.rb, line 696
def visit_implicit_node(node)
end
visit_implicit_rest_node(node) click to toggle source

foo { |bar,| }

^
# File prism/translation/ruby_parser.rb, line 701
def visit_implicit_rest_node(node)
end
visit_in_node(node) click to toggle source

case foo; in bar; end ^^^^^^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 706
def visit_in_node(node)
  pattern =
    if node.pattern.is_a?(ConstantPathNode)
      s(node.pattern, :const, visit(node.pattern))
    else
      node.pattern.accept(copy_compiler(in_pattern: true))
    end

  s(node, :in, pattern).concat(node.statements.nil? ? [nil] : visit_all(node.statements.body))
end
visit_index_and_write_node(node) click to toggle source

foo &&= baz ^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 732
def visit_index_and_write_node(node)
  arglist = nil

  if !node.arguments.nil? || !node.block.nil?
    arglist = s(node, :arglist).concat(visit_all(node.arguments&.arguments || []))
    arglist << visit(node.block) if !node.block.nil?
  end

  s(node, :op_asgn1, visit(node.receiver), arglist, :"&&", visit_write_value(node.value))
end
visit_index_operator_write_node(node) click to toggle source

foo += baz ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 719
def visit_index_operator_write_node(node)
  arglist = nil

  if !node.arguments.nil? || !node.block.nil?
    arglist = s(node, :arglist).concat(visit_all(node.arguments&.arguments || []))
    arglist << visit(node.block) if !node.block.nil?
  end

  s(node, :op_asgn1, visit(node.receiver), arglist, node.binary_operator, visit_write_value(node.value))
end
visit_index_or_write_node(node) click to toggle source

foo ||= baz ^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 745
def visit_index_or_write_node(node)
  arglist = nil

  if !node.arguments.nil? || !node.block.nil?
    arglist = s(node, :arglist).concat(visit_all(node.arguments&.arguments || []))
    arglist << visit(node.block) if !node.block.nil?
  end

  s(node, :op_asgn1, visit(node.receiver), arglist, :"||", visit_write_value(node.value))
end
visit_index_target_node(node) click to toggle source

foo, = 1 ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 758
def visit_index_target_node(node)
  arguments = visit_all(node.arguments&.arguments || [])
  arguments << visit(node.block) unless node.block.nil?

  s(node, :attrasgn, visit(node.receiver), :[]=).concat(arguments)
end
visit_instance_variable_and_write_node(node) click to toggle source

@foo &&= bar ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 788
def visit_instance_variable_and_write_node(node)
  s(node, :op_asgn_and, s(node, :ivar, node.name), s(node, :iasgn, node.name, visit(node.value)))
end
visit_instance_variable_operator_write_node(node) click to toggle source

@foo += bar ^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 782
def visit_instance_variable_operator_write_node(node)
  s(node, :iasgn, node.name, s(node, :call, s(node, :ivar, node.name), node.binary_operator, visit_write_value(node.value)))
end
visit_instance_variable_or_write_node(node) click to toggle source

@foo ||= bar ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 794
def visit_instance_variable_or_write_node(node)
  s(node, :op_asgn_or, s(node, :ivar, node.name), s(node, :iasgn, node.name, visit(node.value)))
end
visit_instance_variable_read_node(node) click to toggle source

@foo ^^^^

# File prism/translation/ruby_parser.rb, line 767
def visit_instance_variable_read_node(node)
  s(node, :ivar, node.name)
end
visit_instance_variable_target_node(node) click to toggle source

@foo, = bar ^^^^

# File prism/translation/ruby_parser.rb, line 800
def visit_instance_variable_target_node(node)
  s(node, :iasgn, node.name)
end
visit_instance_variable_write_node(node) click to toggle source

@foo = 1 ^^^^^^^^

@foo, @bar = 1 ^^^^ ^^^^

# File prism/translation/ruby_parser.rb, line 776
def visit_instance_variable_write_node(node)
  s(node, :iasgn, node.name, visit_write_value(node.value))
end
visit_integer_node(node) click to toggle source

1 ^

# File prism/translation/ruby_parser.rb, line 806
def visit_integer_node(node)
  s(node, :lit, node.value)
end
visit_interpolated_match_last_line_node(node) click to toggle source

if /foo #{bar}/ then end

^^^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 812
def visit_interpolated_match_last_line_node(node)
  parts = visit_interpolated_parts(node.parts)
  regexp =
    if parts.length == 1
      s(node, :lit, Regexp.new(parts.first, node.options))
    else
      s(node, :dregx).concat(parts).tap do |result|
        options = node.options
        result << options if options != 0
      end
    end

  s(node, :match, regexp)
end
visit_interpolated_regular_expression_node(node) click to toggle source

/foo #{bar}/ ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 829
def visit_interpolated_regular_expression_node(node)
  parts = visit_interpolated_parts(node.parts)

  if parts.length == 1
    s(node, :lit, Regexp.new(parts.first, node.options))
  else
    s(node, :dregx).concat(parts).tap do |result|
      options = node.options
      result << options if options != 0
    end
  end
end
visit_interpolated_string_node(node) click to toggle source

“foo #{bar}” ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 844
def visit_interpolated_string_node(node)
  parts = visit_interpolated_parts(node.parts)
  parts.length == 1 ? s(node, :str, parts.first) : s(node, :dstr).concat(parts)
end
visit_interpolated_symbol_node(node) click to toggle source

:“foo #{bar}” ^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 851
def visit_interpolated_symbol_node(node)
  parts = visit_interpolated_parts(node.parts)
  parts.length == 1 ? s(node, :lit, parts.first.to_sym) : s(node, :dsym).concat(parts)
end
visit_interpolated_x_string_node(node) click to toggle source

‘foo #{bar}` ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 858
def visit_interpolated_x_string_node(node)
  source = node.heredoc? ? node.parts.first : node
  parts = visit_interpolated_parts(node.parts)
  parts.length == 1 ? s(source, :xstr, parts.first) : s(source, :dxstr).concat(parts)
end
visit_keyword_hash_node(node) click to toggle source

foo(bar: baz)

^^^^^^^^
# File prism/translation/ruby_parser.rb, line 916
def visit_keyword_hash_node(node)
  s(node, :hash).concat(node.elements.flat_map { |element| visit(element) })
end
visit_keyword_rest_parameter_node(node) click to toggle source

def foo(**bar); end

^^^^^

def foo(**); end

^^
# File prism/translation/ruby_parser.rb, line 925
def visit_keyword_rest_parameter_node(node)
  :"**#{node.name}"
end
visit_lambda_node(node) click to toggle source

-> {}

# File prism/translation/ruby_parser.rb, line 930
def visit_lambda_node(node)
  parameters =
    case node.parameters
    when nil, NumberedParametersNode
      s(node, :args)
    else
      visit(node.parameters)
    end

  if node.body.nil?
    s(node, :iter, s(node, :lambda), parameters)
  else
    s(node, :iter, s(node, :lambda), parameters, visit(node.body))
  end
end
visit_local_variable_and_write_node(node) click to toggle source

foo &&= bar ^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 973
def visit_local_variable_and_write_node(node)
  s(node, :op_asgn_and, s(node, :lvar, node.name), s(node, :lasgn, node.name, visit_write_value(node.value)))
end
visit_local_variable_operator_write_node(node) click to toggle source

foo += bar ^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 967
def visit_local_variable_operator_write_node(node)
  s(node, :lasgn, node.name, s(node, :call, s(node, :lvar, node.name), node.binary_operator, visit_write_value(node.value)))
end
visit_local_variable_or_write_node(node) click to toggle source

foo ||= bar ^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 979
def visit_local_variable_or_write_node(node)
  s(node, :op_asgn_or, s(node, :lvar, node.name), s(node, :lasgn, node.name, visit_write_value(node.value)))
end
visit_local_variable_read_node(node) click to toggle source

foo ^^^

# File prism/translation/ruby_parser.rb, line 948
def visit_local_variable_read_node(node)
  if node.name.match?(/^_\d$/)
    s(node, :call, nil, node.name)
  else
    s(node, :lvar, node.name)
  end
end
visit_local_variable_target_node(node) click to toggle source

foo, = bar ^^^

# File prism/translation/ruby_parser.rb, line 985
def visit_local_variable_target_node(node)
  s(node, :lasgn, node.name)
end
visit_local_variable_write_node(node) click to toggle source

foo = 1 ^^^^^^^

foo, bar = 1 ^^^ ^^^

# File prism/translation/ruby_parser.rb, line 961
def visit_local_variable_write_node(node)
  s(node, :lasgn, node.name, visit_write_value(node.value))
end
visit_match_last_line_node(node) click to toggle source

if /foo/ then end

^^^^^
# File prism/translation/ruby_parser.rb, line 991
def visit_match_last_line_node(node)
  s(node, :match, s(node, :lit, Regexp.new(node.unescaped, node.options)))
end
visit_match_predicate_node(node) click to toggle source

foo in bar ^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 997
def visit_match_predicate_node(node)
  s(node, :case, visit(node.value), s(node, :in, node.pattern.accept(copy_compiler(in_pattern: true)), nil), nil)
end
visit_match_required_node(node) click to toggle source

foo => bar ^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1003
def visit_match_required_node(node)
  s(node, :case, visit(node.value), s(node, :in, node.pattern.accept(copy_compiler(in_pattern: true)), nil), nil)
end
visit_match_write_node(node) click to toggle source

/(?<foo>foo)/ =~ bar ^^^^^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1009
def visit_match_write_node(node)
  s(node, :match2, visit(node.call.receiver), visit(node.call.arguments.arguments.first))
end
visit_missing_node(node) click to toggle source

A node that is missing from the syntax tree. This is only used in the case of a syntax error. The parser gem doesn’t have such a concept, so we invent our own here.

# File prism/translation/ruby_parser.rb, line 1016
def visit_missing_node(node)
  raise "Cannot visit missing node directly"
end
visit_module_node(node) click to toggle source

module Foo; end ^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1022
def visit_module_node(node)
  name =
    if node.constant_path.is_a?(ConstantReadNode)
      node.name
    else
      visit(node.constant_path)
    end

  if node.body.nil?
    s(node, :module, name)
  elsif node.body.is_a?(StatementsNode)
    compiler = copy_compiler(in_def: false)
    s(node, :module, name).concat(node.body.body.map { |child| child.accept(compiler) })
  else
    s(node, :module, name, node.body.accept(copy_compiler(in_def: false)))
  end
end
visit_multi_target_node(node) click to toggle source

foo, bar = baz ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1042
def visit_multi_target_node(node)
  targets = [*node.lefts]
  targets << node.rest if !node.rest.nil? && !node.rest.is_a?(ImplicitRestNode)
  targets.concat(node.rights)

  s(node, :masgn, s(node, :array).concat(visit_all(targets)))
end
visit_multi_write_node(node) click to toggle source

foo, bar = baz ^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1052
def visit_multi_write_node(node)
  targets = [*node.lefts]
  targets << node.rest if !node.rest.nil? && !node.rest.is_a?(ImplicitRestNode)
  targets.concat(node.rights)

  value =
    if node.value.is_a?(ArrayNode) && node.value.opening_loc.nil?
      if node.value.elements.length == 1 && node.value.elements.first.is_a?(SplatNode)
        visit(node.value.elements.first)
      else
        visit(node.value)
      end
    else
      s(node.value, :to_ary, visit(node.value))
    end

  s(node, :masgn, s(node, :array).concat(visit_all(targets)), value)
end
visit_next_node(node) click to toggle source

next ^^^^

next foo ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1076
def visit_next_node(node)
  if node.arguments.nil?
    s(node, :next)
  elsif node.arguments.arguments.length == 1
    argument = node.arguments.arguments.first
    s(node, :next, argument.is_a?(SplatNode) ? s(node, :svalue, visit(argument)) : visit(argument))
  else
    s(node, :next, s(node, :array).concat(visit_all(node.arguments.arguments)))
  end
end
visit_nil_node(node) click to toggle source

nil ^^^

# File prism/translation/ruby_parser.rb, line 1089
def visit_nil_node(node)
  s(node, :nil)
end
visit_no_keywords_parameter_node(node) click to toggle source

def foo(**nil); end

^^^^^
# File prism/translation/ruby_parser.rb, line 1095
def visit_no_keywords_parameter_node(node)
  in_pattern ? s(node, :kwrest, :"**nil") : :"**nil"
end
visit_numbered_parameters_node(node) click to toggle source

-> { _1 + _2 } ^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1101
def visit_numbered_parameters_node(node)
  raise "Cannot visit numbered parameters directly"
end
visit_numbered_reference_read_node(node) click to toggle source

$1 ^^

# File prism/translation/ruby_parser.rb, line 1107
def visit_numbered_reference_read_node(node)
  s(node, :nth_ref, node.number)
end
visit_optional_keyword_parameter_node(node) click to toggle source

def foo(bar: baz); end

^^^^^^^^
# File prism/translation/ruby_parser.rb, line 1113
def visit_optional_keyword_parameter_node(node)
  s(node, :kwarg, node.name, visit(node.value))
end
visit_optional_parameter_node(node) click to toggle source

def foo(bar = 1); end

^^^^^^^
# File prism/translation/ruby_parser.rb, line 1119
def visit_optional_parameter_node(node)
  s(node, :lasgn, node.name, visit(node.value))
end
visit_or_node(node) click to toggle source

a or b ^^^^^^

# File prism/translation/ruby_parser.rb, line 1125
def visit_or_node(node)
  s(node, :or, visit(node.left), visit(node.right))
end
visit_parameters_node(node) click to toggle source

def foo(bar, *baz); end

^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 1131
def visit_parameters_node(node)
  children =
    node.compact_child_nodes.map do |element|
      if element.is_a?(MultiTargetNode)
        visit_destructured_parameter(element)
      else
        visit(element)
      end
    end

  s(node, :args).concat(children)
end
visit_parentheses_node(node) click to toggle source

() ^^

(1) ^^^

# File prism/translation/ruby_parser.rb, line 1169
def visit_parentheses_node(node)
  if node.body.nil?
    s(node, :nil)
  else
    visit(node.body)
  end
end
visit_pinned_expression_node(node) click to toggle source

foo => ^(bar)

^^^^^^
# File prism/translation/ruby_parser.rb, line 1179
def visit_pinned_expression_node(node)
  node.expression.accept(copy_compiler(in_pattern: false))
end
visit_pinned_variable_node(node) click to toggle source

foo = 1 and bar => ^foo

^^^^
# File prism/translation/ruby_parser.rb, line 1185
def visit_pinned_variable_node(node)
  if node.variable.is_a?(LocalVariableReadNode) && node.variable.name.match?(/^_\d$/)
    s(node, :lvar, node.variable.name)
  else
    visit(node.variable)
  end
end
visit_post_execution_node(node) click to toggle source

END {}

# File prism/translation/ruby_parser.rb, line 1194
def visit_post_execution_node(node)
  s(node, :iter, s(node, :postexe), 0, visit(node.statements))
end
visit_pre_execution_node(node) click to toggle source

BEGIN {}

# File prism/translation/ruby_parser.rb, line 1199
def visit_pre_execution_node(node)
  s(node, :iter, s(node, :preexe), 0, visit(node.statements))
end
visit_program_node(node) click to toggle source

The top-level program node.

# File prism/translation/ruby_parser.rb, line 1204
def visit_program_node(node)
  visit(node.statements)
end
visit_range_node(node) click to toggle source

0..5 ^^^^

# File prism/translation/ruby_parser.rb, line 1210
def visit_range_node(node)
  if !in_pattern && !node.left.nil? && !node.right.nil? && ([node.left.type, node.right.type] - %i[nil_node integer_node]).empty?
    left = node.left.value if node.left.is_a?(IntegerNode)
    right = node.right.value if node.right.is_a?(IntegerNode)
    s(node, :lit, Range.new(left, right, node.exclude_end?))
  else
    s(node, node.exclude_end? ? :dot3 : :dot2, visit_range_bounds_node(node.left), visit_range_bounds_node(node.right))
  end
end
visit_rational_node(node) click to toggle source

1r ^^

# File prism/translation/ruby_parser.rb, line 1232
def visit_rational_node(node)
  s(node, :lit, node.value)
end
visit_redo_node(node) click to toggle source

redo ^^^^

# File prism/translation/ruby_parser.rb, line 1238
def visit_redo_node(node)
  s(node, :redo)
end
visit_regular_expression_node(node) click to toggle source

/foo/ ^^^^^

# File prism/translation/ruby_parser.rb, line 1244
def visit_regular_expression_node(node)
  s(node, :lit, Regexp.new(node.unescaped, node.options))
end
visit_required_keyword_parameter_node(node) click to toggle source

def foo(bar:); end

^^^^
# File prism/translation/ruby_parser.rb, line 1250
def visit_required_keyword_parameter_node(node)
  s(node, :kwarg, node.name)
end
visit_required_parameter_node(node) click to toggle source

def foo(bar); end

^^^
# File prism/translation/ruby_parser.rb, line 1256
def visit_required_parameter_node(node)
  node.name
end
visit_rescue_modifier_node(node) click to toggle source

foo rescue bar ^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1262
def visit_rescue_modifier_node(node)
  s(node, :rescue, visit(node.expression), s(node.rescue_expression, :resbody, s(node.rescue_expression, :array), visit(node.rescue_expression)))
end
visit_rescue_node(node) click to toggle source

begin; rescue; end

^^^^^^^
# File prism/translation/ruby_parser.rb, line 1268
def visit_rescue_node(node)
  exceptions =
    if node.exceptions.length == 1 && node.exceptions.first.is_a?(SplatNode)
      visit(node.exceptions.first)
    else
      s(node, :array).concat(visit_all(node.exceptions))
    end

  if !node.reference.nil?
    exceptions << (visit(node.reference) << s(node.reference, :gvar, :"$!"))
  end

  s(node, :resbody, exceptions).concat(node.statements.nil? ? [nil] : visit_all(node.statements.body))
end
visit_rest_parameter_node(node) click to toggle source

def foo(*bar); end

^^^^

def foo(*); end

^
# File prism/translation/ruby_parser.rb, line 1288
def visit_rest_parameter_node(node)
  :"*#{node.name}"
end
visit_retry_node(node) click to toggle source

retry ^^^^^

# File prism/translation/ruby_parser.rb, line 1294
def visit_retry_node(node)
  s(node, :retry)
end
visit_return_node(node) click to toggle source

return ^^^^^^

return 1 ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1303
def visit_return_node(node)
  if node.arguments.nil?
    s(node, :return)
  elsif node.arguments.arguments.length == 1
    argument = node.arguments.arguments.first
    s(node, :return, argument.is_a?(SplatNode) ? s(node, :svalue, visit(argument)) : visit(argument))
  else
    s(node, :return, s(node, :array).concat(visit_all(node.arguments.arguments)))
  end
end
visit_self_node(node) click to toggle source

self ^^^^

# File prism/translation/ruby_parser.rb, line 1316
def visit_self_node(node)
  s(node, :self)
end
visit_shareable_constant_node(node) click to toggle source

A shareable constant.

# File prism/translation/ruby_parser.rb, line 1321
def visit_shareable_constant_node(node)
  visit(node.write)
end
visit_singleton_class_node(node) click to toggle source

class << self; end ^^^^^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1327
def visit_singleton_class_node(node)
  s(node, :sclass, visit(node.expression)).tap do |sexp|
    sexp << node.body.accept(copy_compiler(in_def: false)) unless node.body.nil?
  end
end
visit_source_encoding_node(node) click to toggle source

__ENCODING__ ^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1335
def visit_source_encoding_node(node)
  # TODO
  s(node, :colon2, s(node, :const, :Encoding), :UTF_8)
end
visit_source_file_node(node) click to toggle source

__FILE__ ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1342
def visit_source_file_node(node)
  s(node, :str, node.filepath)
end
visit_source_line_node(node) click to toggle source

__LINE__ ^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1348
def visit_source_line_node(node)
  s(node, :lit, node.location.start_line)
end
visit_splat_node(node) click to toggle source

foo(*bar)

^^^^

def foo((bar, *baz)); end

^^^^

def foo(*); bar(*); end

^
# File prism/translation/ruby_parser.rb, line 1360
def visit_splat_node(node)
  if node.expression.nil?
    s(node, :splat)
  else
    s(node, :splat, visit(node.expression))
  end
end
visit_statements_node(node) click to toggle source

A list of statements.

# File prism/translation/ruby_parser.rb, line 1369
def visit_statements_node(node)
  first, *rest = node.body

  if rest.empty?
    visit(first)
  else
    s(node, :block).concat(visit_all(node.body))
  end
end
visit_string_node(node) click to toggle source

“foo” ^^^^^

# File prism/translation/ruby_parser.rb, line 1381
def visit_string_node(node)
  s(node, :str, node.unescaped)
end
visit_super_node(node) click to toggle source

super(foo) ^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1387
def visit_super_node(node)
  arguments = node.arguments&.arguments || []
  block = node.block

  if block.is_a?(BlockArgumentNode)
    arguments << block
    block = nil
  end

  visit_block(node, s(node, :super).concat(visit_all(arguments)), block)
end
visit_symbol_node(node) click to toggle source

:foo ^^^^

# File prism/translation/ruby_parser.rb, line 1401
def visit_symbol_node(node)
  node.value == "!@" ? s(node, :lit, :"!@") : s(node, :lit, node.unescaped.to_sym)
end
visit_true_node(node) click to toggle source

true ^^^^

# File prism/translation/ruby_parser.rb, line 1407
def visit_true_node(node)
  s(node, :true)
end
visit_undef_node(node) click to toggle source

undef foo ^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1413
def visit_undef_node(node)
  names = node.names.map { |name| s(node, :undef, visit(name)) }
  names.length == 1 ? names.first : s(node, :block).concat(names)
end
visit_unless_node(node) click to toggle source

unless foo; bar end ^^^^^^^^^^^^^^^^^^^

bar unless foo ^^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1423
def visit_unless_node(node)
  s(node, :if, visit(node.predicate), visit(node.consequent), visit(node.statements))
end
visit_until_node(node) click to toggle source

until foo; bar end ^^^^^^^^^^^^^^^^^

bar until foo ^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1432
def visit_until_node(node)
  s(node, :until, visit(node.predicate), visit(node.statements), !node.begin_modifier?)
end
visit_when_node(node) click to toggle source

case foo; when bar; end

^^^^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 1438
def visit_when_node(node)
  s(node, :when, s(node, :array).concat(visit_all(node.conditions))).concat(node.statements.nil? ? [nil] : visit_all(node.statements.body))
end
visit_while_node(node) click to toggle source

while foo; bar end ^^^^^^^^^^^^^^^^^^

bar while foo ^^^^^^^^^^^^^

# File prism/translation/ruby_parser.rb, line 1447
def visit_while_node(node)
  s(node, :while, visit(node.predicate), visit(node.statements), !node.begin_modifier?)
end
visit_x_string_node(node) click to toggle source

‘foo` ^^^^^

# File prism/translation/ruby_parser.rb, line 1453
def visit_x_string_node(node)
  result = s(node, :xstr, node.unescaped)

  if node.heredoc?
    result.line = node.content_loc.start_line
    result.line_max = node.content_loc.end_line
  end

  result
end
visit_yield_node(node) click to toggle source

yield ^^^^^

yield 1 ^^^^^^^

# File prism/translation/ruby_parser.rb, line 1469
def visit_yield_node(node)
  s(node, :yield).concat(visit_all(node.arguments&.arguments || []))
end

Private Instance Methods

class_variable_write_type() click to toggle source

If a class variable is written within a method definition, it has a different type than everywhere else.

# File prism/translation/ruby_parser.rb, line 403
        def class_variable_write_type
  in_def ? :cvasgn : :cvdecl
end
copy_compiler(in_def: self.in_def, in_pattern: self.in_pattern) click to toggle source

Create a new compiler with the given options.

# File prism/translation/ruby_parser.rb, line 1476
def copy_compiler(in_def: self.in_def, in_pattern: self.in_pattern)
  Compiler.new(file, in_def: in_def, in_pattern: in_pattern)
end
op_asgn?(node) click to toggle source

Call nodes with operators following them will either be op_asgn or op_asgn2 nodes. That is determined by their call operator and their right-hand side.

# File prism/translation/ruby_parser.rb, line 308
        def op_asgn?(node)
  node.call_operator == "::" || (node.value.is_a?(CallNode) && node.value.opening_loc.nil? && !node.value.arguments.nil?)
end
op_asgn_type(node, type) click to toggle source

Call nodes with operators following them can use &. as an operator, which changes their type by prefixing “safe_”.

# File prism/translation/ruby_parser.rb, line 314
        def op_asgn_type(node, type)
  node.safe_navigation? ? :"safe_#{type}" : type
end
s(node, *arguments) click to toggle source

Create a new Sexp object from the given prism node and arguments.

# File prism/translation/ruby_parser.rb, line 1481
def s(node, *arguments)
  result = Sexp.new(*arguments)
  result.file = file
  result.line = node.location.start_line
  result.line_max = node.location.end_line
  result
end
visit_block(node, sexp, block) click to toggle source

Visit a block node, which will modify the AST by wrapping the given visited node in an iter node.

# File prism/translation/ruby_parser.rb, line 1491
def visit_block(node, sexp, block)
  if block.nil?
    sexp
  else
    parameters =
      case block.parameters
      when nil, NumberedParametersNode
        0
      else
        visit(block.parameters)
      end

    if block.body.nil?
      s(node, :iter, sexp, parameters)
    else
      s(node, :iter, sexp, parameters, visit(block.body))
    end
  end
end
visit_destructured_parameter(node) click to toggle source

def foo((bar, baz)); end

^^^^^^^^^^
# File prism/translation/ruby_parser.rb, line 1146
        def visit_destructured_parameter(node)
  children =
    [*node.lefts, *node.rest, *node.rights].map do |child|
      case child
      when RequiredParameterNode
        visit(child)
      when MultiTargetNode
        visit_destructured_parameter(child)
      when SplatNode
        :"*#{child.expression&.name}"
      else
        raise
      end
    end

  s(node, :masgn).concat(children)
end
visit_interpolated_parts(parts) click to toggle source

Visit the interpolated content of the string-like node.

# File prism/translation/ruby_parser.rb, line 865
        def visit_interpolated_parts(parts)
  visited = []
  parts.each do |part|
    result = visit(part)

    if result[0] == :evstr && result[1]
      if result[1][0] == :str
        visited << result[1]
      elsif result[1][0] == :dstr
        visited.concat(result[1][1..-1])
      else
        visited << result
      end
    else
      visited << result
    end
  end

  state = :beginning #: :beginning | :string_content | :interpolated_content

  visited.each_with_object([]) do |result, results|
    case state
    when :beginning
      if result.is_a?(String)
        results << result
        state = :string_content
      elsif result.is_a?(Array) && result[0] == :str
        results << result[1]
        state = :string_content
      else
        results << ""
        results << result
        state = :interpolated_content
      end
    when :string_content
      if result.is_a?(String)
        results[0] << result
      elsif result.is_a?(Array) && result[0] == :str
        results[0] << result[1]
      else
        results << result
        state = :interpolated_content
      end
    else
      results << result
    end
  end
end
visit_pattern_constant(node) click to toggle source

Pattern constants get wrapped in another layer of :const.

# File prism/translation/ruby_parser.rb, line 1512
def visit_pattern_constant(node)
  case node
  when nil
    # nothing
  when ConstantReadNode
    visit(node)
  else
    s(node, :const, visit(node))
  end
end
visit_range_bounds_node(node) click to toggle source

If the bounds of a range node are empty parentheses, then they do not get replaced by their usual s(:nil), but instead are s(:begin).

# File prism/translation/ruby_parser.rb, line 1222
        def visit_range_bounds_node(node)
  if node.is_a?(ParenthesesNode) && node.body.nil?
    s(node, :begin)
  else
    visit(node)
  end
end
visit_write_value(node) click to toggle source

Visit the value of a write, which will be on the right-hand side of a write operator. Because implicit arrays can have splats, those could potentially be wrapped in an svalue node.

# File prism/translation/ruby_parser.rb, line 1526
def visit_write_value(node)
  if node.is_a?(ArrayNode) && node.opening_loc.nil?
    if node.elements.length == 1 && node.elements.first.is_a?(SplatNode)
      s(node, :svalue, visit(node.elements.first))
    else
      s(node, :svalue, visit(node))
    end
  else
    visit(node)
  end
end