Class: Prism::Translation::Parser::Compiler

Inherits:
Compiler show all
Defined in:
lib/prism/translation/parser/compiler.rb

Overview

A visitor that knows how to convert a prism syntax tree into the whitequark/parser gem’s syntax tree.

Defined Under Namespace

Classes: CompilationError

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from BasicVisitor

#visit, #visit_all, #visit_child_nodes

Constructor Details

#initialize(parser, offset_cache, forwarding: [], in_destructure: false, in_pattern: false) ⇒ Compiler

Initialize a new compiler with the given parser, offset cache, and options.


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# File 'lib/prism/translation/parser/compiler.rb', line 39

def initialize(parser, offset_cache, forwarding: [], in_destructure: false, in_pattern: false)
  @parser = parser
  @builder = parser.builder
  @source_buffer = parser.source_buffer
  @offset_cache = offset_cache

  @forwarding = forwarding
  @in_destructure = in_destructure
  @in_pattern = in_pattern
end

Instance Attribute Details

#builder ⇒ Object (readonly)

The Parser::Builders::Default instance that is being used to build the AST.


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# File 'lib/prism/translation/parser/compiler.rb', line 18

def builder
  @builder
end

#forwarding ⇒ Object (readonly)

The types of values that can be forwarded in the current scope.


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# File 'lib/prism/translation/parser/compiler.rb', line 29

def forwarding
  @forwarding
end

#in_destructure ⇒ Object (readonly)

Whether or not the current node is in a destructure.


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# File 'lib/prism/translation/parser/compiler.rb', line 32

def in_destructure
  @in_destructure
end

#in_pattern ⇒ Object (readonly)

Whether or not the current node is in a pattern.


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# File 'lib/prism/translation/parser/compiler.rb', line 35

def in_pattern
  @in_pattern
end

#offset_cache ⇒ Object (readonly)

The offset cache that is used to map between byte and character offsets in the file.


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# File 'lib/prism/translation/parser/compiler.rb', line 26

def offset_cache
  @offset_cache
end

#parser ⇒ Object (readonly)

The Parser::Base instance that is being used to build the AST.


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# File 'lib/prism/translation/parser/compiler.rb', line 14

def parser
  @parser
end

#source_buffer ⇒ Object (readonly)

The Parser::Source::Buffer instance that is holding a reference to the source code.


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# File 'lib/prism/translation/parser/compiler.rb', line 22

def source_buffer
  @source_buffer
end

Instance Method Details

#visit_alias_global_variable_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 58

def visit_alias_global_variable_node(node)
  builder.alias(token(node.keyword_loc), visit(node.new_name), visit(node.old_name))
end

#visit_alias_method_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 52

def visit_alias_method_node(node)
  builder.alias(token(node.keyword_loc), visit(node.new_name), visit(node.old_name))
end

#visit_alternation_pattern_node(node) ⇒ Object

foo => bar | baz

^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 64

def visit_alternation_pattern_node(node)
  builder.match_alt(visit(node.left), token(node.operator_loc), visit(node.right))
end

#visit_and_node(node) ⇒ Object

a and b ^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 70

def visit_and_node(node)
  builder.logical_op(:and, visit(node.left), token(node.operator_loc), visit(node.right))
end

#visit_arguments_node(node) ⇒ Object

foo(bar)

^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 127

def visit_arguments_node(node)
  visit_all(node.arguments)
end

#visit_array_node(node) ⇒ Object

^^


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# File 'lib/prism/translation/parser/compiler.rb', line 76

def visit_array_node(node)
  if node.opening&.start_with?("%w", "%W", "%i", "%I")
    elements = node.elements.flat_map do |element|
      if element.is_a?(StringNode)
        if element.content.include?("\n")
          string_nodes_from_line_continuations(element.unescaped, element.content, element.content_loc.start_offset, node.opening)
        else
          [builder.string_internal([element.unescaped, srange(element.content_loc)])]
        end
      elsif element.is_a?(InterpolatedStringNode)
        builder.string_compose(
          token(element.opening_loc),
          string_nodes_from_interpolation(element, node.opening),
          token(element.closing_loc)
        )
      else
        [visit(element)]
      end
    end
  else
    elements = visit_all(node.elements)
  end

  builder.array(token(node.opening_loc), elements, token(node.closing_loc))
end

#visit_array_pattern_node(node) ⇒ Object

foo => [bar]

^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 104

def visit_array_pattern_node(node)
  elements = [*node.requireds]
  elements << node.rest if !node.rest.nil? && !node.rest.is_a?(ImplicitRestNode)
  elements.concat(node.posts)
  visited = visit_all(elements)

  if node.rest.is_a?(ImplicitRestNode)
    visited[-1] = builder.match_with_trailing_comma(visited[-1], token(node.rest.location))
  end

  if node.constant
    if visited.empty?
      builder.const_pattern(visit(node.constant), token(node.opening_loc), builder.array_pattern(token(node.opening_loc), visited, token(node.closing_loc)), token(node.closing_loc))
    else
      builder.const_pattern(visit(node.constant), token(node.opening_loc), builder.array_pattern(nil, visited, nil), token(node.closing_loc))
    end
  else
    builder.array_pattern(token(node.opening_loc), visited, token(node.closing_loc))
  end
end

#visit_assoc_node(node) ⇒ Object

{ a: 1 }

^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 133

def visit_assoc_node(node)
  key = node.key

  if in_pattern
    if node.value.is_a?(ImplicitNode)
      if key.is_a?(SymbolNode)
        if key.opening.nil?
          builder.match_hash_var([key.unescaped, srange(key.location)])
        else
          builder.match_hash_var_from_str(token(key.opening_loc), [builder.string_internal([key.unescaped, srange(key.value_loc)])], token(key.closing_loc))
        end
      else
        builder.match_hash_var_from_str(token(key.opening_loc), visit_all(key.parts), token(key.closing_loc))
      end
    elsif key.opening.nil?
      builder.pair_keyword([key.unescaped, srange(key.location)], visit(node.value))
    else
      builder.pair_quoted(token(key.opening_loc), [builder.string_internal([key.unescaped, srange(key.value_loc)])], token(key.closing_loc), visit(node.value))
    end
  elsif node.value.is_a?(ImplicitNode)
    value = node.value.value

    implicit_value = if value.is_a?(CallNode)
      builder.call_method(nil, nil, [value.name, srange(value.message_loc)])
    elsif value.is_a?(ConstantReadNode)
      builder.const([value.name, srange(key.value_loc)])
    else
      builder.ident([value.name, srange(key.value_loc)]).updated(:lvar)
    end

    builder.pair_keyword([key.unescaped, srange(key)], implicit_value)
  elsif node.operator_loc
    builder.pair(visit(key), token(node.operator_loc), visit(node.value))
  elsif key.is_a?(SymbolNode) && key.opening_loc.nil?
    builder.pair_keyword([key.unescaped, srange(key.location)], visit(node.value))
  else
    parts =
      if key.is_a?(SymbolNode)
        [builder.string_internal([key.unescaped, srange(key.value_loc)])]
      else
        visit_all(key.parts)
      end

    builder.pair_quoted(token(key.opening_loc), parts, token(key.closing_loc), visit(node.value))
  end
end

#visit_assoc_splat_node(node) ⇒ Object

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

^^

{ **foo }

^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 185

def visit_assoc_splat_node(node)
  if in_pattern
    builder.match_rest(token(node.operator_loc), token(node.value&.location))
  elsif node.value.nil? && forwarding.include?(:**)
    builder.forwarded_kwrestarg(token(node.operator_loc))
  else
    builder.kwsplat(token(node.operator_loc), visit(node.value))
  end
end

#visit_back_reference_read_node(node) ⇒ Object

$+ ^^


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# File 'lib/prism/translation/parser/compiler.rb', line 197

def visit_back_reference_read_node(node)
  builder.back_ref(token(node.location))
end

#visit_begin_node(node) ⇒ Object

begin end ^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 203

def visit_begin_node(node)
  rescue_bodies = []

  if (rescue_clause = node.rescue_clause)
    begin
      find_start_offset = (rescue_clause.reference&.location || rescue_clause.exceptions.last&.location || rescue_clause.keyword_loc).end_offset
      find_end_offset = (
        rescue_clause.statements&.location&.start_offset ||
        rescue_clause.subsequent&.location&.start_offset ||
        node.else_clause&.location&.start_offset ||
        node.ensure_clause&.location&.start_offset ||
        node.end_keyword_loc&.start_offset ||
        find_start_offset + 1
      )

      rescue_bodies << builder.rescue_body(
        token(rescue_clause.keyword_loc),
        rescue_clause.exceptions.any? ? builder.array(nil, visit_all(rescue_clause.exceptions), nil) : nil,
        token(rescue_clause.operator_loc),
        visit(rescue_clause.reference),
        srange_find(find_start_offset, find_end_offset, ";"),
        visit(rescue_clause.statements)
      )
    end until (rescue_clause = rescue_clause.subsequent).nil?
  end

  begin_body =
    builder.begin_body(
      visit(node.statements),
      rescue_bodies,
      token(node.else_clause&.else_keyword_loc),
      visit(node.else_clause),
      token(node.ensure_clause&.ensure_keyword_loc),
      visit(node.ensure_clause&.statements)
    )

  if node.begin_keyword_loc
    builder.begin_keyword(token(node.begin_keyword_loc), begin_body, token(node.end_keyword_loc))
  else
    begin_body
  end
end

#visit_block_argument_node(node) ⇒ Object

foo(&bar)

^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 248

def visit_block_argument_node(node)
  builder.block_pass(token(node.operator_loc), visit(node.expression))
end

#visit_block_local_variable_node(node) ⇒ Object

foo { |; bar| }

^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 254

def visit_block_local_variable_node(node)
  builder.shadowarg(token(node.location))
end

#visit_block_node(node) ⇒ Object

A block on a keyword or method call.

Raises:


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# File 'lib/prism/translation/parser/compiler.rb', line 259

def visit_block_node(node)
  raise CompilationError, "Cannot directly compile block nodes"
end

#visit_block_parameter_node(node) ⇒ Object

def foo(&bar); end

^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 265

def visit_block_parameter_node(node)
  builder.blockarg(token(node.operator_loc), token(node.name_loc))
end

#visit_block_parameters_node(node) ⇒ Object

A block’s parameters.


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# File 'lib/prism/translation/parser/compiler.rb', line 270

def visit_block_parameters_node(node)
  [*visit(node.parameters)].concat(visit_all(node.locals))
end

#visit_break_node(node) ⇒ Object

break ^^^^^

break foo ^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 279

def visit_break_node(node)
  builder.keyword_cmd(:break, token(node.keyword_loc), nil, visit(node.arguments) || [], nil)
end

#visit_call_and_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 384

def visit_call_and_write_node(node)
  call_operator_loc = node.call_operator_loc

  builder.op_assign(
    builder.call_method(
      visit(node.receiver),
      call_operator_loc.nil? ? nil : [{ "." => :dot, "&." => :anddot, "::" => "::" }.fetch(call_operator_loc.slice), srange(call_operator_loc)],
      node.message_loc ? [node.read_name, srange(node.message_loc)] : nil,
      nil,
      [],
      nil
    ),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_call_node(node) ⇒ Object

foo ^^^

foo.bar ^^^^^^^

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


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# File 'lib/prism/translation/parser/compiler.rb', line 291

def visit_call_node(node)
  name = node.name
  arguments = node.arguments&.arguments || []
  block = node.block

  if block.is_a?(BlockArgumentNode)
    arguments = [*arguments, block]
    block = nil
  end

  if node.call_operator_loc.nil?
    case name
    when :-@
      case (receiver = node.receiver).type
      when :integer_node, :float_node, :rational_node, :imaginary_node
        return visit(numeric_negate(node.message_loc, receiver))
      end
    when :!
      return visit_block(builder.not_op(token(node.message_loc), token(node.opening_loc), visit(node.receiver), token(node.closing_loc)), block)
    when :=~
      if (receiver = node.receiver).is_a?(RegularExpressionNode)
        return builder.match_op(visit(receiver), token(node.message_loc), visit(node.arguments.arguments.first))
      end
    when :[]
      return visit_block(builder.index(visit(node.receiver), token(node.opening_loc), visit_all(arguments), token(node.closing_loc)), block)
    when :[]=
      if node.message != "[]=" && node.arguments && block.nil? && !node.safe_navigation?
        arguments = node.arguments.arguments[...-1]
        arguments << node.block if node.block

        return visit_block(
          builder.assign(
            builder.index_asgn(
              visit(node.receiver),
              token(node.opening_loc),
              visit_all(arguments),
              token(node.closing_loc),
            ),
            srange_find(node.message_loc.end_offset, node.arguments.arguments.last.location.start_offset, "="),
            visit(node.arguments.arguments.last)
          ),
          block
        )
      end
    end
  end

  message_loc = node.message_loc
  call_operator_loc = node.call_operator_loc
  call_operator = [{ "." => :dot, "&." => :anddot, "::" => "::" }.fetch(call_operator_loc.slice), srange(call_operator_loc)] if call_operator_loc

  visit_block(
    if name.end_with?("=") && !message_loc.slice.end_with?("=") && node.arguments && block.nil?
      builder.assign(
        builder.attr_asgn(visit(node.receiver), call_operator, token(message_loc)),
        srange_find(message_loc.end_offset, node.arguments.location.start_offset, "="),
        visit(node.arguments.arguments.last)
      )
    else
      builder.call_method(
        visit(node.receiver),
        call_operator,
        message_loc ? [node.name, srange(message_loc)] : nil,
        token(node.opening_loc),
        visit_all(arguments),
        token(node.closing_loc)
      )
    end,
    block
  )
end

#visit_call_operator_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 365

def visit_call_operator_write_node(node)
  call_operator_loc = node.call_operator_loc

  builder.op_assign(
    builder.call_method(
      visit(node.receiver),
      call_operator_loc.nil? ? nil : [{ "." => :dot, "&." => :anddot, "::" => "::" }.fetch(call_operator_loc.slice), srange(call_operator_loc)],
      node.message_loc ? [node.read_name, srange(node.message_loc)] : nil,
      nil,
      [],
      nil
    ),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_call_or_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 403

def visit_call_or_write_node(node)
  call_operator_loc = node.call_operator_loc

  builder.op_assign(
    builder.call_method(
      visit(node.receiver),
      call_operator_loc.nil? ? nil : [{ "." => :dot, "&." => :anddot, "::" => "::" }.fetch(call_operator_loc.slice), srange(call_operator_loc)],
      node.message_loc ? [node.read_name, srange(node.message_loc)] : nil,
      nil,
      [],
      nil
    ),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_call_target_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 422

def visit_call_target_node(node)
  call_operator_loc = node.call_operator_loc

  builder.attr_asgn(
    visit(node.receiver),
    call_operator_loc.nil? ? nil : [{ "." => :dot, "&." => :anddot, "::" => "::" }.fetch(call_operator_loc.slice), srange(call_operator_loc)],
    token(node.message_loc)
  )
end

#visit_capture_pattern_node(node) ⇒ Object

foo => bar => baz

^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 434

def visit_capture_pattern_node(node)
  builder.match_as(visit(node.value), token(node.operator_loc), visit(node.target))
end

#visit_case_match_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 453

def visit_case_match_node(node)
  builder.case_match(
    token(node.case_keyword_loc),
    visit(node.predicate),
    visit_all(node.conditions),
    token(node.else_clause&.else_keyword_loc),
    visit(node.else_clause),
    token(node.end_keyword_loc)
  )
end

#visit_case_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 440

def visit_case_node(node)
  builder.case(
    token(node.case_keyword_loc),
    visit(node.predicate),
    visit_all(node.conditions),
    token(node.else_clause&.else_keyword_loc),
    visit(node.else_clause),
    token(node.end_keyword_loc)
  )
end

#visit_class_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 466

def visit_class_node(node)
  builder.def_class(
    token(node.class_keyword_loc),
    visit(node.constant_path),
    token(node.inheritance_operator_loc),
    visit(node.superclass),
    node.body&.accept(copy_compiler(forwarding: [])),
    token(node.end_keyword_loc)
  )
end

#visit_class_variable_and_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 505

def visit_class_variable_and_write_node(node)
  builder.op_assign(
    builder.assignable(builder.cvar(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_class_variable_operator_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 495

def visit_class_variable_operator_write_node(node)
  builder.op_assign(
    builder.assignable(builder.cvar(token(node.name_loc))),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_class_variable_or_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 515

def visit_class_variable_or_write_node(node)
  builder.op_assign(
    builder.assignable(builder.cvar(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_class_variable_read_node(node) ⇒ Object

@@foo ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 479

def visit_class_variable_read_node(node)
  builder.cvar(token(node.location))
end

#visit_class_variable_target_node(node) ⇒ Object

@@foo, = bar ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 525

def visit_class_variable_target_node(node)
  builder.assignable(builder.cvar(token(node.location)))
end

#visit_class_variable_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 485

def visit_class_variable_write_node(node)
  builder.assign(
    builder.assignable(builder.cvar(token(node.name_loc))),
    token(node.operator_loc),
    visit(node.value)
  )
end

#visit_constant_and_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 556

def visit_constant_and_write_node(node)
  builder.op_assign(
    builder.assignable(builder.const([node.name, srange(node.name_loc)])),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_constant_operator_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 546

def visit_constant_operator_write_node(node)
  builder.op_assign(
    builder.assignable(builder.const([node.name, srange(node.name_loc)])),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_constant_or_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 566

def visit_constant_or_write_node(node)
  builder.op_assign(
    builder.assignable(builder.const([node.name, srange(node.name_loc)])),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_constant_path_and_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 622

def visit_constant_path_and_write_node(node)
  builder.op_assign(
    builder.assignable(visit(node.target)),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_constant_path_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 582

def visit_constant_path_node(node)
  if node.parent.nil?
    builder.const_global(
      token(node.delimiter_loc),
      [node.name, srange(node.name_loc)]
    )
  else
    builder.const_fetch(
      visit(node.parent),
      token(node.delimiter_loc),
      [node.name, srange(node.name_loc)]
    )
  end
end

#visit_constant_path_operator_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 612

def visit_constant_path_operator_write_node(node)
  builder.op_assign(
    builder.assignable(visit(node.target)),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_constant_path_or_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 632

def visit_constant_path_or_write_node(node)
  builder.op_assign(
    builder.assignable(visit(node.target)),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_constant_path_target_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 642

def visit_constant_path_target_node(node)
  builder.assignable(visit_constant_path_node(node))
end

#visit_constant_path_write_node(node) ⇒ Object

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

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


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# File 'lib/prism/translation/parser/compiler.rb', line 602

def visit_constant_path_write_node(node)
  builder.assign(
    builder.assignable(visit(node.target)),
    token(node.operator_loc),
    visit(node.value)
  )
end

#visit_constant_read_node(node) ⇒ Object

Foo ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 531

def visit_constant_read_node(node)
  builder.const([node.name, srange(node.location)])
end

#visit_constant_target_node(node) ⇒ Object

Foo, = bar ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 576

def visit_constant_target_node(node)
  builder.assignable(builder.const([node.name, srange(node.location)]))
end

#visit_constant_write_node(node) ⇒ Object

Foo = 1 ^^^^^^^

Foo, Bar = 1 ^^^ ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 540

def visit_constant_write_node(node)
  builder.assign(builder.assignable(builder.const([node.name, srange(node.name_loc)])), token(node.operator_loc), visit(node.value))
end

#visit_def_node(node) ⇒ Object

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

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


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# File 'lib/prism/translation/parser/compiler.rb', line 651

def visit_def_node(node)
  if node.equal_loc
    if node.receiver
      builder.def_endless_singleton(
        token(node.def_keyword_loc),
        visit(node.receiver.is_a?(ParenthesesNode) ? node.receiver.body : node.receiver),
        token(node.operator_loc),
        token(node.name_loc),
        builder.args(token(node.lparen_loc), visit(node.parameters) || [], token(node.rparen_loc), false),
        token(node.equal_loc),
        node.body&.accept(copy_compiler(forwarding: find_forwarding(node.parameters)))
      )
    else
      builder.def_endless_method(
        token(node.def_keyword_loc),
        token(node.name_loc),
        builder.args(token(node.lparen_loc), visit(node.parameters) || [], token(node.rparen_loc), false),
        token(node.equal_loc),
        node.body&.accept(copy_compiler(forwarding: find_forwarding(node.parameters)))
      )
    end
  elsif node.receiver
    builder.def_singleton(
      token(node.def_keyword_loc),
      visit(node.receiver.is_a?(ParenthesesNode) ? node.receiver.body : node.receiver),
      token(node.operator_loc),
      token(node.name_loc),
      builder.args(token(node.lparen_loc), visit(node.parameters) || [], token(node.rparen_loc), false),
      node.body&.accept(copy_compiler(forwarding: find_forwarding(node.parameters))),
      token(node.end_keyword_loc)
    )
  else
    builder.def_method(
      token(node.def_keyword_loc),
      token(node.name_loc),
      builder.args(token(node.lparen_loc), visit(node.parameters) || [], token(node.rparen_loc), false),
      node.body&.accept(copy_compiler(forwarding: find_forwarding(node.parameters))),
      token(node.end_keyword_loc)
    )
  end
end

#visit_defined_node(node) ⇒ Object

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

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


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# File 'lib/prism/translation/parser/compiler.rb', line 698

def visit_defined_node(node)
  builder.keyword_cmd(
    :defined?,
    token(node.keyword_loc),
    token(node.lparen_loc),
    [visit(node.value)],
    token(node.rparen_loc)
  )
end

#visit_else_node(node) ⇒ Object

if foo then bar else baz end

^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 710

def visit_else_node(node)
  visit(node.statements)
end

#visit_embedded_statements_node(node) ⇒ Object

“foo #bar”

^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 716

def visit_embedded_statements_node(node)
  builder.begin(
    token(node.opening_loc),
    visit(node.statements),
    token(node.closing_loc)
  )
end

#visit_embedded_variable_node(node) ⇒ Object

“foo #@bar”

^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 726

def visit_embedded_variable_node(node)
  visit(node.variable)
end

#visit_ensure_node(node) ⇒ Object

begin; foo; ensure; bar; end

^^^^^^^^^^^^

Raises:


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# File 'lib/prism/translation/parser/compiler.rb', line 732

def visit_ensure_node(node)
  raise CompilationError, "Cannot directly compile ensure nodes"
end

#visit_false_node(node) ⇒ Object

false ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 738

def visit_false_node(node)
  builder.false(token(node.location))
end

#visit_find_pattern_node(node) ⇒ Object

foo => [*, bar, *]

^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 744

def visit_find_pattern_node(node)
  elements = [node.left, *node.requireds, node.right]

  if node.constant
    builder.const_pattern(visit(node.constant), token(node.opening_loc), builder.find_pattern(nil, visit_all(elements), nil), token(node.closing_loc))
  else
    builder.find_pattern(token(node.opening_loc), visit_all(elements), token(node.closing_loc))
  end
end

#visit_float_node(node) ⇒ Object

1.0 ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 756

def visit_float_node(node)
  visit_numeric(node, builder.float([node.value, srange(node.location)]))
end

#visit_for_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 762

def visit_for_node(node)
  builder.for(
    token(node.for_keyword_loc),
    visit(node.index),
    token(node.in_keyword_loc),
    visit(node.collection),
    if (do_keyword_loc = node.do_keyword_loc)
      token(do_keyword_loc)
    else
      srange_find(node.collection.location.end_offset, (node.statements&.location || node.end_keyword_loc).start_offset, ";")
    end,
    visit(node.statements),
    token(node.end_keyword_loc)
  )
end

#visit_forwarding_arguments_node(node) ⇒ Object

def foo(…); bar(…); end

^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 780

def visit_forwarding_arguments_node(node)
  builder.forwarded_args(token(node.location))
end

#visit_forwarding_parameter_node(node) ⇒ Object

def foo(…); end

^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 786

def visit_forwarding_parameter_node(node)
  builder.forward_arg(token(node.location))
end

#visit_forwarding_super_node(node) ⇒ Object

super ^^^^^

super {} ^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 795

def visit_forwarding_super_node(node)
  visit_block(
    builder.keyword_cmd(
      :zsuper,
      ["super", srange_offsets(node.location.start_offset, node.location.start_offset + 5)]
    ),
    node.block
  )
end

#visit_global_variable_and_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 833

def visit_global_variable_and_write_node(node)
  builder.op_assign(
    builder.assignable(builder.gvar(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_global_variable_operator_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 823

def visit_global_variable_operator_write_node(node)
  builder.op_assign(
    builder.assignable(builder.gvar(token(node.name_loc))),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_global_variable_or_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 843

def visit_global_variable_or_write_node(node)
  builder.op_assign(
    builder.assignable(builder.gvar(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_global_variable_read_node(node) ⇒ Object

$foo ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 807

def visit_global_variable_read_node(node)
  builder.gvar(token(node.location))
end

#visit_global_variable_target_node(node) ⇒ Object

$foo, = bar ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 853

def visit_global_variable_target_node(node)
  builder.assignable(builder.gvar([node.slice, srange(node.location)]))
end

#visit_global_variable_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 813

def visit_global_variable_write_node(node)
  builder.assign(
    builder.assignable(builder.gvar(token(node.name_loc))),
    token(node.operator_loc),
    visit(node.value)
  )
end

#visit_hash_node(node) ⇒ Object

{} ^^


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# File 'lib/prism/translation/parser/compiler.rb', line 859

def visit_hash_node(node)
  builder.associate(
    token(node.opening_loc),
    visit_all(node.elements),
    token(node.closing_loc)
  )
end

#visit_hash_pattern_node(node) ⇒ Object

foo => {}

^^


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# File 'lib/prism/translation/parser/compiler.rb', line 869

def visit_hash_pattern_node(node)
  elements = [*node.elements, *node.rest]

  if node.constant
    builder.const_pattern(visit(node.constant), token(node.opening_loc), builder.hash_pattern(nil, visit_all(elements), nil), token(node.closing_loc))
  else
    builder.hash_pattern(token(node.opening_loc), visit_all(elements), token(node.closing_loc))
  end
end

#visit_if_node(node) ⇒ Object

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

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

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


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# File 'lib/prism/translation/parser/compiler.rb', line 887

def visit_if_node(node)
  if !node.if_keyword_loc
    builder.ternary(
      visit(node.predicate),
      token(node.then_keyword_loc),
      visit(node.statements),
      token(node.subsequent.else_keyword_loc),
      visit(node.subsequent)
    )
  elsif node.if_keyword_loc.start_offset == node.location.start_offset
    builder.condition(
      token(node.if_keyword_loc),
      visit(node.predicate),
      if (then_keyword_loc = node.then_keyword_loc)
        token(then_keyword_loc)
      else
        srange_find(node.predicate.location.end_offset, (node.statements&.location || node.subsequent&.location || node.end_keyword_loc).start_offset, ";")
      end,
      visit(node.statements),
      case node.subsequent
      when IfNode
        token(node.subsequent.if_keyword_loc)
      when ElseNode
        token(node.subsequent.else_keyword_loc)
      end,
      visit(node.subsequent),
      if node.if_keyword != "elsif"
        token(node.end_keyword_loc)
      end
    )
  else
    builder.condition_mod(
      visit(node.statements),
      visit(node.subsequent),
      token(node.if_keyword_loc),
      visit(node.predicate)
    )
  end
end

#visit_imaginary_node(node) ⇒ Object

1i ^^


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# File 'lib/prism/translation/parser/compiler.rb', line 929

def visit_imaginary_node(node)
  visit_numeric(node, builder.complex([Complex(0, node.numeric.value), srange(node.location)]))
end

#visit_implicit_node(node) ⇒ Object

{ foo: }

^^^^

Raises:


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# File 'lib/prism/translation/parser/compiler.rb', line 935

def visit_implicit_node(node)
  raise CompilationError, "Cannot directly compile implicit nodes"
end

#visit_implicit_rest_node(node) ⇒ Object

foo { |bar,| }

^

Raises:


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# File 'lib/prism/translation/parser/compiler.rb', line 941

def visit_implicit_rest_node(node)
  raise CompilationError, "Cannot compile implicit rest nodes"
end

#visit_in_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 947

def visit_in_node(node)
  pattern = nil
  guard = nil

  case node.pattern
  when IfNode
    pattern = within_pattern { |compiler| node.pattern.statements.accept(compiler) }
    guard = builder.if_guard(token(node.pattern.if_keyword_loc), visit(node.pattern.predicate))
  when UnlessNode
    pattern = within_pattern { |compiler| node.pattern.statements.accept(compiler) }
    guard = builder.unless_guard(token(node.pattern.keyword_loc), visit(node.pattern.predicate))
  else
    pattern = within_pattern { |compiler| node.pattern.accept(compiler) }
  end

  builder.in_pattern(
    token(node.in_loc),
    pattern,
    guard,
    if (then_loc = node.then_loc)
      token(then_loc)
    else
      srange_find(node.pattern.location.end_offset, node.statements&.location&.start_offset, ";")
    end,
    visit(node.statements)
  )
end

#visit_index_and_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 995

def visit_index_and_write_node(node)
  arguments = node.arguments&.arguments || []
  arguments << node.block if node.block

  builder.op_assign(
    builder.index(
      visit(node.receiver),
      token(node.opening_loc),
      visit_all(arguments),
      token(node.closing_loc)
    ),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_index_operator_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 977

def visit_index_operator_write_node(node)
  arguments = node.arguments&.arguments || []
  arguments << node.block if node.block

  builder.op_assign(
    builder.index(
      visit(node.receiver),
      token(node.opening_loc),
      visit_all(arguments),
      token(node.closing_loc)
    ),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_index_or_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1013

def visit_index_or_write_node(node)
  arguments = node.arguments&.arguments || []
  arguments << node.block if node.block

  builder.op_assign(
    builder.index(
      visit(node.receiver),
      token(node.opening_loc),
      visit_all(arguments),
      token(node.closing_loc)
    ),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_index_target_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1031

def visit_index_target_node(node)
  builder.index_asgn(
    visit(node.receiver),
    token(node.opening_loc),
    visit_all(node.arguments.arguments),
    token(node.closing_loc),
  )
end

#visit_instance_variable_and_write_node(node) ⇒ Object

^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1068

def visit_instance_variable_and_write_node(node)
  builder.op_assign(
    builder.assignable(builder.ivar(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_instance_variable_operator_write_node(node) ⇒ Object

^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1058

def visit_instance_variable_operator_write_node(node)
  builder.op_assign(
    builder.assignable(builder.ivar(token(node.name_loc))),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_instance_variable_or_write_node(node) ⇒ Object

^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1078

def visit_instance_variable_or_write_node(node)
  builder.op_assign(
    builder.assignable(builder.ivar(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_instance_variable_read_node(node) ⇒ Object

^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1042

def visit_instance_variable_read_node(node)
  builder.ivar(token(node.location))
end

#visit_instance_variable_target_node(node) ⇒ Object

@foo, = bar ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1088

def visit_instance_variable_target_node(node)
  builder.assignable(builder.ivar(token(node.location)))
end

#visit_instance_variable_write_node(node) ⇒ Object

^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1048

def visit_instance_variable_write_node(node)
  builder.assign(
    builder.assignable(builder.ivar(token(node.name_loc))),
    token(node.operator_loc),
    visit(node.value)
  )
end

#visit_integer_node(node) ⇒ Object

1 ^


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# File 'lib/prism/translation/parser/compiler.rb', line 1094

def visit_integer_node(node)
  visit_numeric(node, builder.integer([node.value, srange(node.location)]))
end

#visit_interpolated_regular_expression_node(node) ⇒ Object Also known as: visit_interpolated_match_last_line_node

/foo #bar/ ^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1100

def visit_interpolated_regular_expression_node(node)
  builder.regexp_compose(
    token(node.opening_loc),
    string_nodes_from_interpolation(node, node.opening),
    [node.closing[0], srange_offsets(node.closing_loc.start_offset, node.closing_loc.start_offset + 1)],
    builder.regexp_options([node.closing[1..], srange_offsets(node.closing_loc.start_offset + 1, node.closing_loc.end_offset)])
  )
end

#visit_interpolated_string_node(node) ⇒ Object

“foo #bar” ^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1115

def visit_interpolated_string_node(node)
  if node.heredoc?
    return visit_heredoc(node) { |children, closing| builder.string_compose(token(node.opening_loc), children, closing) }
  end

  builder.string_compose(
    token(node.opening_loc),
    string_nodes_from_interpolation(node, node.opening),
    token(node.closing_loc)
  )
end

#visit_interpolated_symbol_node(node) ⇒ Object

:“foo #bar” ^^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1129

def visit_interpolated_symbol_node(node)
  builder.symbol_compose(
    token(node.opening_loc),
    string_nodes_from_interpolation(node, node.opening),
    token(node.closing_loc)
  )
end

#visit_interpolated_x_string_node(node) ⇒ Object

‘foo #bar` ^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1139

def visit_interpolated_x_string_node(node)
  if node.heredoc?
    return visit_heredoc(node) { |children, closing| builder.xstring_compose(token(node.opening_loc), children, closing) }
  end

  builder.xstring_compose(
    token(node.opening_loc),
    string_nodes_from_interpolation(node, node.opening),
    token(node.closing_loc)
  )
end

#visit_it_local_variable_read_node(node) ⇒ Object

-> { it }

^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1153

def visit_it_local_variable_read_node(node)
  builder.ident([:it, srange(node.location)]).updated(:lvar)
end

#visit_it_parameters_node(node) ⇒ Object

-> { it } ^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1159

def visit_it_parameters_node(node)
  # FIXME: The builder _should_ always be a subclass of the prism builder.
  # Currently RuboCop passes in its own builder that always inherits from the
  # parser builder (which is lacking the `itarg` method). Once rubocop-ast
  # opts in to use the custom prism builder a warning can be emitted when
  # it is not the expected class, and eventually raise.
  # https://github.com/rubocop/rubocop-ast/pull/354
  if builder.is_a?(Translation::Parser::Builder)
    builder.itarg
  else
    builder.args(nil, [], nil, false)
  end
end

#visit_keyword_hash_node(node) ⇒ Object

foo(bar: baz)

^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1175

def visit_keyword_hash_node(node)
  builder.associate(nil, visit_all(node.elements), nil)
end

#visit_keyword_rest_parameter_node(node) ⇒ Object

def foo(**bar); end

^^^^^

def foo(**); end

^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1184

def visit_keyword_rest_parameter_node(node)
  builder.kwrestarg(
    token(node.operator_loc),
    node.name ? [node.name, srange(node.name_loc)] : nil
  )
end

#visit_lambda_node(node) ⇒ Object

-> {} ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1193

def visit_lambda_node(node)
  parameters = node.parameters
  implicit_parameters = parameters.is_a?(NumberedParametersNode) || parameters.is_a?(ItParametersNode)

  builder.block(
    builder.call_lambda(token(node.operator_loc)),
    [node.opening, srange(node.opening_loc)],
    if parameters.nil?
      builder.args(nil, [], nil, false)
    elsif implicit_parameters
      visit(node.parameters)
    else
      builder.args(
        token(node.parameters.opening_loc),
        visit(node.parameters),
        token(node.parameters.closing_loc),
        false
      )
    end,
    visit(node.body),
    [node.closing, srange(node.closing_loc)]
  )
end

#visit_local_variable_and_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1245

def visit_local_variable_and_write_node(node)
  builder.op_assign(
    builder.assignable(builder.ident(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_local_variable_operator_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1235

def visit_local_variable_operator_write_node(node)
  builder.op_assign(
    builder.assignable(builder.ident(token(node.name_loc))),
    [node.binary_operator_loc.slice.chomp("="), srange(node.binary_operator_loc)],
    visit(node.value)
  )
end

#visit_local_variable_or_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1255

def visit_local_variable_or_write_node(node)
  builder.op_assign(
    builder.assignable(builder.ident(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end

#visit_local_variable_read_node(node) ⇒ Object

foo ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1219

def visit_local_variable_read_node(node)
  builder.ident([node.name, srange(node.location)]).updated(:lvar)
end

#visit_local_variable_target_node(node) ⇒ Object

foo, = bar ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1265

def visit_local_variable_target_node(node)
  if in_pattern
    builder.assignable(builder.match_var([node.name, srange(node.location)]))
  else
    builder.assignable(builder.ident(token(node.location)))
  end
end

#visit_local_variable_write_node(node) ⇒ Object

foo = 1 ^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1225

def visit_local_variable_write_node(node)
  builder.assign(
    builder.assignable(builder.ident(token(node.name_loc))),
    token(node.operator_loc),
    visit(node.value)
  )
end

#visit_match_predicate_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1275

def visit_match_predicate_node(node)
  builder.match_pattern_p(
    visit(node.value),
    token(node.operator_loc),
    within_pattern { |compiler| node.pattern.accept(compiler) }
  )
end

#visit_match_required_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1285

def visit_match_required_node(node)
  builder.match_pattern(
    visit(node.value),
    token(node.operator_loc),
    within_pattern { |compiler| node.pattern.accept(compiler) }
  )
end

#visit_match_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1295

def visit_match_write_node(node)
  builder.match_op(
    visit(node.call.receiver),
    token(node.call.message_loc),
    visit(node.call.arguments.arguments.first)
  )
end

#visit_missing_node(node) ⇒ Object

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.


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# File 'lib/prism/translation/parser/compiler.rb', line 1306

def visit_missing_node(node)
  ::AST::Node.new(:missing, [], location: ::Parser::Source::Map.new(srange(node.location)))
end

#visit_module_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1312

def visit_module_node(node)
  builder.def_module(
    token(node.module_keyword_loc),
    visit(node.constant_path),
    node.body&.accept(copy_compiler(forwarding: [])),
    token(node.end_keyword_loc)
  )
end

#visit_multi_target_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1323

def visit_multi_target_node(node)
  builder.multi_lhs(
    token(node.lparen_loc),
    visit_all(multi_target_elements(node)),
    token(node.rparen_loc)
  )
end

#visit_multi_write_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1333

def visit_multi_write_node(node)
  elements = multi_target_elements(node)

  if elements.length == 1 && elements.first.is_a?(MultiTargetNode) && !node.rest
    elements = multi_target_elements(elements.first)
  end

  builder.multi_assign(
    builder.multi_lhs(
      token(node.lparen_loc),
      visit_all(elements),
      token(node.rparen_loc)
    ),
    token(node.operator_loc),
    visit(node.value)
  )
end

#visit_next_node(node) ⇒ Object

next ^^^^

next foo ^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1356

def visit_next_node(node)
  builder.keyword_cmd(
    :next,
    token(node.keyword_loc),
    nil,
    visit(node.arguments) || [],
    nil
  )
end

#visit_nil_node(node) ⇒ Object

nil ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1368

def visit_nil_node(node)
  builder.nil(token(node.location))
end

#visit_no_keywords_parameter_node(node) ⇒ Object

def foo(**nil); end

^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1374

def visit_no_keywords_parameter_node(node)
  if in_pattern
    builder.match_nil_pattern(token(node.operator_loc), token(node.keyword_loc))
  else
    builder.kwnilarg(token(node.operator_loc), token(node.keyword_loc))
  end
end

#visit_numbered_parameters_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1384

def visit_numbered_parameters_node(node)
  builder.numargs(node.maximum)
end

#visit_numbered_reference_read_node(node) ⇒ Object

$1 ^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1390

def visit_numbered_reference_read_node(node)
  builder.nth_ref([node.number, srange(node.location)])
end

#visit_optional_keyword_parameter_node(node) ⇒ Object

def foo(bar: baz); end

^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1396

def visit_optional_keyword_parameter_node(node)
  builder.kwoptarg([node.name, srange(node.name_loc)], visit(node.value))
end

#visit_optional_parameter_node(node) ⇒ Object

def foo(bar = 1); end

^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1402

def visit_optional_parameter_node(node)
  builder.optarg(token(node.name_loc), token(node.operator_loc), visit(node.value))
end

#visit_or_node(node) ⇒ Object

a or b ^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1408

def visit_or_node(node)
  builder.logical_op(:or, visit(node.left), token(node.operator_loc), visit(node.right))
end

#visit_parameters_node(node) ⇒ Object

def foo(bar, *baz); end

^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1414

def visit_parameters_node(node)
  params = []

  if node.requireds.any?
    node.requireds.each do |required|
      params <<
        if required.is_a?(RequiredParameterNode)
          visit(required)
        else
          required.accept(copy_compiler(in_destructure: true))
        end
    end
  end

  params.concat(visit_all(node.optionals)) if node.optionals.any?
  params << visit(node.rest) if !node.rest.nil? && !node.rest.is_a?(ImplicitRestNode)

  if node.posts.any?
    node.posts.each do |post|
      params <<
        if post.is_a?(RequiredParameterNode)
          visit(post)
        else
          post.accept(copy_compiler(in_destructure: true))
        end
    end
  end

  params.concat(visit_all(node.keywords)) if node.keywords.any?
  params << visit(node.keyword_rest) if !node.keyword_rest.nil?
  params << visit(node.block) if !node.block.nil?
  params
end

#visit_parentheses_node(node) ⇒ Object

() ^^

(1) ^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1453

def visit_parentheses_node(node)
  builder.begin(
    token(node.opening_loc),
    visit(node.body),
    token(node.closing_loc)
  )
end

#visit_pinned_expression_node(node) ⇒ Object

foo => ^(bar)

^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1463

def visit_pinned_expression_node(node)
  expression = builder.begin(token(node.lparen_loc), visit(node.expression), token(node.rparen_loc))
  builder.pin(token(node.operator_loc), expression)
end

#visit_pinned_variable_node(node) ⇒ Object

foo = 1 and bar => ^foo

^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1470

def visit_pinned_variable_node(node)
  builder.pin(token(node.operator_loc), visit(node.variable))
end

#visit_post_execution_node(node) ⇒ Object

END {}


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# File 'lib/prism/translation/parser/compiler.rb', line 1475

def visit_post_execution_node(node)
  builder.postexe(
    token(node.keyword_loc),
    token(node.opening_loc),
    visit(node.statements),
    token(node.closing_loc)
  )
end

#visit_pre_execution_node(node) ⇒ Object

BEGIN {}


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# File 'lib/prism/translation/parser/compiler.rb', line 1485

def visit_pre_execution_node(node)
  builder.preexe(
    token(node.keyword_loc),
    token(node.opening_loc),
    visit(node.statements),
    token(node.closing_loc)
  )
end

#visit_program_node(node) ⇒ Object

The top-level program node.


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# File 'lib/prism/translation/parser/compiler.rb', line 1495

def visit_program_node(node)
  visit(node.statements)
end

#visit_range_node(node) ⇒ Object Also known as: visit_flip_flop_node

0..5 ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1501

def visit_range_node(node)
  if node.exclude_end?
    builder.range_exclusive(
      visit(node.left),
      token(node.operator_loc),
      visit(node.right)
    )
  else
    builder.range_inclusive(
      visit(node.left),
      token(node.operator_loc),
      visit(node.right)
    )
  end
end

#visit_rational_node(node) ⇒ Object

1r ^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1523

def visit_rational_node(node)
  visit_numeric(node, builder.rational([node.value, srange(node.location)]))
end

#visit_redo_node(node) ⇒ Object

redo ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1529

def visit_redo_node(node)
  builder.keyword_cmd(:redo, token(node.location))
end

#visit_regular_expression_node(node) ⇒ Object Also known as: visit_match_last_line_node

/foo/ ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1535

def visit_regular_expression_node(node)
  parts =
    if node.content == ""
      []
    elsif node.content.include?("\n")
      string_nodes_from_line_continuations(node.unescaped, node.content, node.content_loc.start_offset, node.opening)
    else
      [builder.string_internal([node.unescaped, srange(node.content_loc)])]
    end

  builder.regexp_compose(
    token(node.opening_loc),
    parts,
    [node.closing[0], srange_offsets(node.closing_loc.start_offset, node.closing_loc.start_offset + 1)],
    builder.regexp_options([node.closing[1..], srange_offsets(node.closing_loc.start_offset + 1, node.closing_loc.end_offset)])
  )
end

#visit_required_keyword_parameter_node(node) ⇒ Object

def foo(bar:); end

^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1559

def visit_required_keyword_parameter_node(node)
  builder.kwarg([node.name, srange(node.name_loc)])
end

#visit_required_parameter_node(node) ⇒ Object

def foo(bar); end

^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1565

def visit_required_parameter_node(node)
  builder.arg(token(node.location))
end

#visit_rescue_modifier_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1571

def visit_rescue_modifier_node(node)
  builder.begin_body(
    visit(node.expression),
    [
      builder.rescue_body(
        token(node.keyword_loc),
        nil,
        nil,
        nil,
        nil,
        visit(node.rescue_expression)
      )
    ]
  )
end

#visit_rescue_node(node) ⇒ Object

begin; rescue; end

^^^^^^^

Raises:


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# File 'lib/prism/translation/parser/compiler.rb', line 1589

def visit_rescue_node(node)
  raise CompilationError, "Cannot directly compile rescue nodes"
end

#visit_rest_parameter_node(node) ⇒ Object

def foo(*bar); end

^^^^

def foo(*); end

^


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# File 'lib/prism/translation/parser/compiler.rb', line 1598

def visit_rest_parameter_node(node)
  builder.restarg(token(node.operator_loc), token(node.name_loc))
end

#visit_retry_node(node) ⇒ Object

retry ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1604

def visit_retry_node(node)
  builder.keyword_cmd(:retry, token(node.location))
end

#visit_return_node(node) ⇒ Object

return ^^^^^^

return 1 ^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1613

def visit_return_node(node)
  builder.keyword_cmd(
    :return,
    token(node.keyword_loc),
    nil,
    visit(node.arguments) || [],
    nil
  )
end

#visit_self_node(node) ⇒ Object

self ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1625

def visit_self_node(node)
  builder.self(token(node.location))
end

#visit_shareable_constant_node(node) ⇒ Object

A shareable constant.


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# File 'lib/prism/translation/parser/compiler.rb', line 1630

def visit_shareable_constant_node(node)
  visit(node.write)
end

#visit_singleton_class_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1636

def visit_singleton_class_node(node)
  builder.def_sclass(
    token(node.class_keyword_loc),
    token(node.operator_loc),
    visit(node.expression),
    node.body&.accept(copy_compiler(forwarding: [])),
    token(node.end_keyword_loc)
  )
end

#visit_source_encoding_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1648

def visit_source_encoding_node(node)
  builder.accessible(builder.__ENCODING__(token(node.location)))
end

#visit_source_file_node(node) ⇒ Object

__FILE__ ^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1654

def visit_source_file_node(node)
  builder.accessible(builder.__FILE__(token(node.location)))
end

#visit_source_line_node(node) ⇒ Object

__LINE__ ^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1660

def visit_source_line_node(node)
  builder.accessible(builder.__LINE__(token(node.location)))
end

#visit_splat_node(node) ⇒ Object

foo(*bar)

^^^^

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

^^^^

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

^


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# File 'lib/prism/translation/parser/compiler.rb', line 1672

def visit_splat_node(node)
  if node.expression.nil? && forwarding.include?(:*)
    builder.forwarded_restarg(token(node.operator_loc))
  elsif in_destructure
    builder.restarg(token(node.operator_loc), token(node.expression&.location))
  elsif in_pattern
    builder.match_rest(token(node.operator_loc), token(node.expression&.location))
  else
    builder.splat(token(node.operator_loc), visit(node.expression))
  end
end

#visit_statements_node(node) ⇒ Object

A list of statements.


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# File 'lib/prism/translation/parser/compiler.rb', line 1685

def visit_statements_node(node)
  builder.compstmt(visit_all(node.body))
end

#visit_string_node(node) ⇒ Object

“foo” ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1691

def visit_string_node(node)
  if node.heredoc?
    visit_heredoc(node.to_interpolated) { |children, closing| builder.string_compose(token(node.opening_loc), children, closing) }
  elsif node.opening == "?"
    builder.character([node.unescaped, srange(node.location)])
  elsif node.opening&.start_with?("%") && node.unescaped.empty?
    builder.string_compose(token(node.opening_loc), [], token(node.closing_loc))
  else
    parts =
      if node.content.include?("\n")
        string_nodes_from_line_continuations(node.unescaped, node.content, node.content_loc.start_offset, node.opening)
      else
        [builder.string_internal([node.unescaped, srange(node.content_loc)])]
      end

    builder.string_compose(
      token(node.opening_loc),
      parts,
      token(node.closing_loc)
    )
  end
end

#visit_super_node(node) ⇒ Object

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1716

def visit_super_node(node)
  arguments = node.arguments&.arguments || []
  block = node.block

  if block.is_a?(BlockArgumentNode)
    arguments = [*arguments, block]
    block = nil
  end

  visit_block(
    builder.keyword_cmd(
      :super,
      token(node.keyword_loc),
      token(node.lparen_loc),
      visit_all(arguments),
      token(node.rparen_loc)
    ),
    block
  )
end

#visit_symbol_node(node) ⇒ Object

:foo ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1739

def visit_symbol_node(node)
  if node.closing_loc.nil?
    if node.opening_loc.nil?
      builder.symbol_internal([node.unescaped, srange(node.location)])
    else
      builder.symbol([node.unescaped, srange(node.location)])
    end
  else
    parts =
      if node.value == ""
        []
      elsif node.value.include?("\n")
        string_nodes_from_line_continuations(node.unescaped, node.value, node.value_loc.start_offset, node.opening)
      else
        [builder.string_internal([node.unescaped, srange(node.value_loc)])]
      end

    builder.symbol_compose(
      token(node.opening_loc),
      parts,
      token(node.closing_loc)
    )
  end
end

#visit_true_node(node) ⇒ Object

true ^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1766

def visit_true_node(node)
  builder.true(token(node.location))
end

#visit_undef_node(node) ⇒ Object

undef foo ^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1772

def visit_undef_node(node)
  builder.undef_method(token(node.keyword_loc), visit_all(node.names))
end

#visit_unless_node(node) ⇒ Object

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

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1781

def visit_unless_node(node)
  if node.keyword_loc.start_offset == node.location.start_offset
    builder.condition(
      token(node.keyword_loc),
      visit(node.predicate),
      if (then_keyword_loc = node.then_keyword_loc)
        token(then_keyword_loc)
      else
        srange_find(node.predicate.location.end_offset, (node.statements&.location || node.else_clause&.location || node.end_keyword_loc).start_offset, ";")
      end,
      visit(node.else_clause),
      token(node.else_clause&.else_keyword_loc),
      visit(node.statements),
      token(node.end_keyword_loc)
    )
  else
    builder.condition_mod(
      visit(node.else_clause),
      visit(node.statements),
      token(node.keyword_loc),
      visit(node.predicate)
    )
  end
end

#visit_until_node(node) ⇒ Object

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

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1811

def visit_until_node(node)
  if node.location.start_offset == node.keyword_loc.start_offset
    builder.loop(
      :until,
      token(node.keyword_loc),
      visit(node.predicate),
      if (do_keyword_loc = node.do_keyword_loc)
        token(do_keyword_loc)
      else
        srange_find(node.predicate.location.end_offset, (node.statements&.location || node.closing_loc).start_offset, ";")
      end,
      visit(node.statements),
      token(node.closing_loc)
    )
  else
    builder.loop_mod(
      :until,
      visit(node.statements),
      token(node.keyword_loc),
      visit(node.predicate)
    )
  end
end

#visit_when_node(node) ⇒ Object

case foo; when bar; end

^^^^^^^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1837

def visit_when_node(node)
  builder.when(
    token(node.keyword_loc),
    visit_all(node.conditions),
    if (then_keyword_loc = node.then_keyword_loc)
      token(then_keyword_loc)
    else
      srange_find(node.conditions.last.location.end_offset, node.statements&.location&.start_offset, ";")
    end,
    visit(node.statements)
  )
end

#visit_while_node(node) ⇒ Object

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

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


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# File 'lib/prism/translation/parser/compiler.rb', line 1855

def visit_while_node(node)
  if node.location.start_offset == node.keyword_loc.start_offset
    builder.loop(
      :while,
      token(node.keyword_loc),
      visit(node.predicate),
      if (do_keyword_loc = node.do_keyword_loc)
        token(do_keyword_loc)
      else
        srange_find(node.predicate.location.end_offset, (node.statements&.location || node.closing_loc).start_offset, ";")
      end,
      visit(node.statements),
      token(node.closing_loc)
    )
  else
    builder.loop_mod(
      :while,
      visit(node.statements),
      token(node.keyword_loc),
      visit(node.predicate)
    )
  end
end

#visit_x_string_node(node) ⇒ Object

‘foo` ^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1881

def visit_x_string_node(node)
  if node.heredoc?
    return visit_heredoc(node.to_interpolated) { |children, closing| builder.xstring_compose(token(node.opening_loc), children, closing) }
  end

  parts =
    if node.content == ""
      []
    elsif node.content.include?("\n")
      string_nodes_from_line_continuations(node.unescaped, node.content, node.content_loc.start_offset, node.opening)
    else
      [builder.string_internal([node.unescaped, srange(node.content_loc)])]
    end

  builder.xstring_compose(
    token(node.opening_loc),
    parts,
    token(node.closing_loc)
  )
end

#visit_yield_node(node) ⇒ Object

yield ^^^^^

yield 1 ^^^^^^^


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# File 'lib/prism/translation/parser/compiler.rb', line 1907

def visit_yield_node(node)
  builder.keyword_cmd(
    :yield,
    token(node.keyword_loc),
    token(node.lparen_loc),
    visit(node.arguments) || [],
    token(node.rparen_loc)
  )
end