class Prism::BeginNode

表示 begin 语句。

begin
  foo
end
^^^^^

属性

else_clause [R]

表示 begin 代码块中的 else 子句。

begin x; rescue y; else z; end
                   ^^^^^^

ensure_clause [R]

表示 begin 代码块中的 ensure 子句。

begin x; ensure y; end
         ^^^^^^^^

rescue_clause [R]

表示 begin 代码块中的 rescue 子句。

begin x; rescue y; end
         ^^^^^^^^

statements [R]

表示 begin 代码块中的语句。

begin x end
      ^

公共类方法

new (source, node_id, location, flags, begin_keyword_loc, statements, rescue_clause, else_clause, ensure_clause, end_keyword_loc)

源代码

# File lib/prism/node.rb, line 1485
def initialize(source, node_id, location, flags, begin_keyword_loc, statements, rescue_clause, else_clause, ensure_clause, end_keyword_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @begin_keyword_loc = begin_keyword_loc
  @statements = statements
  @rescue_clause = rescue_clause
  @else_clause = else_clause
  @ensure_clause = ensure_clause
  @end_keyword_loc = end_keyword_loc
end

初始化一个新的 BeginNode 节点。

type ()

源代码

# File lib/prism/node.rb, line 1625
def self.type
  :begin_node
end

返回此节点类型的符号表示形式。请参阅 “Node::type”。

公共实例方法

=== (other)

源代码

# File lib/prism/node.rb, line 1631
def ===(other)
  other.is_a?(BeginNode) &&
    (begin_keyword_loc.nil? == other.begin_keyword_loc.nil?) &&
    (statements === other.statements) &&
    (rescue_clause === other.rescue_clause) &&
    (else_clause === other.else_clause) &&
    (ensure_clause === other.ensure_clause) &&
    (end_keyword_loc.nil? == other.end_keyword_loc.nil?)
end

为节点实现 case 相等性。这实际上是 ==，但不比较位置的值。仅检查位置是否存在。

accept (visitor)

源代码

# File lib/prism/node.rb, line 1499
def accept(visitor)
  visitor.visit_begin_node(self)
end

def accept: (Visitor visitor) -> void

begin_keyword ()

源代码

# File lib/prism/node.rb, line 1605
def begin_keyword
  begin_keyword_loc&.slice
end

def begin_keyword: () -> String?

begin_keyword_loc ()

源代码

# File lib/prism/node.rb, line 1540
def begin_keyword_loc
  location = @begin_keyword_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @begin_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

表示 ‘begin’ 关键字的位置。

begin x end
^^^^^

child_nodes ()

源代码

# File lib/prism/node.rb, line 1504
def child_nodes
  [statements, rescue_clause, else_clause, ensure_clause]
end

def child_nodes: () -> Array[nil | Node]

别名为：deconstruct

comment_targets ()

源代码

# File lib/prism/node.rb, line 1519
def comment_targets
  [*begin_keyword_loc, *statements, *rescue_clause, *else_clause, *ensure_clause, *end_keyword_loc] #: Array[Prism::node | Location]
end

def comment_targets: () -> Array[Node | Location]

compact_child_nodes ()

源代码

# File lib/prism/node.rb, line 1509
def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact << statements if statements
  compact << rescue_clause if rescue_clause
  compact << else_clause if else_clause
  compact << ensure_clause if ensure_clause
  compact
end

def compact_child_nodes: () -> Array

copy (node_id: self.node_id, location: self.location, flags: self.flags, begin_keyword_loc: self.begin_keyword_loc, statements: self.statements, rescue_clause: self.rescue_clause, else_clause: self.else_clause, ensure_clause: self.ensure_clause, end_keyword_loc: self.end_keyword_loc)

源代码

# File lib/prism/node.rb, line 1524
def copy(node_id: self.node_id, location: self.location, flags: self.flags, begin_keyword_loc: self.begin_keyword_loc, statements: self.statements, rescue_clause: self.rescue_clause, else_clause: self.else_clause, ensure_clause: self.ensure_clause, end_keyword_loc: self.end_keyword_loc)
  BeginNode.new(source, node_id, location, flags, begin_keyword_loc, statements, rescue_clause, else_clause, ensure_clause, end_keyword_loc)
end

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?begin_keyword_loc: Location?, ?statements: StatementsNode?, ?rescue_clause: RescueNode?, ?else_clause: ElseNode?, ?ensure_clause: EnsureNode?, ?end_keyword_loc: Location?) -> BeginNode

deconstruct ()

def deconstruct: () -> Array[nil | Node]

别名为: child_nodes

deconstruct_keys (keys)

源代码

# File lib/prism/node.rb, line 1532
def deconstruct_keys(keys)
  { node_id: node_id, location: location, begin_keyword_loc: begin_keyword_loc, statements: statements, rescue_clause: rescue_clause, else_clause: else_clause, ensure_clause: ensure_clause, end_keyword_loc: end_keyword_loc }
end

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, begin_keyword_loc: Location?, statements: StatementsNode?, rescue_clause: RescueNode?, else_clause: ElseNode?, ensure_clause: EnsureNode?, end_keyword_loc: Location? }

end_keyword ()

源代码

# File lib/prism/node.rb, line 1610
def end_keyword
  end_keyword_loc&.slice
end

def end_keyword: () -> String?

end_keyword_loc ()

源代码

# File lib/prism/node.rb, line 1586
def end_keyword_loc
  location = @end_keyword_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @end_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

表示 ‘end’ 关键字的位置。

begin x end
        ^^^

inspect ()

源代码

# File lib/prism/node.rb, line 1615
def inspect
  InspectVisitor.compose(self)
end

def inspect -> String

save_begin_keyword_loc (repository)

源代码

# File lib/prism/node.rb, line 1554
def save_begin_keyword_loc(repository)
  repository.enter(node_id, :begin_keyword_loc) unless @begin_keyword_loc.nil?
end

使用给定的已保存源保存 begin_keyword_loc 位置，以便稍后检索。

save_end_keyword_loc (repository)

源代码

# File lib/prism/node.rb, line 1600
def save_end_keyword_loc(repository)
  repository.enter(node_id, :end_keyword_loc) unless @end_keyword_loc.nil?
end

使用给定的已保存源保存 end_keyword_loc 位置，以便稍后检索。

type ()

源代码

# File lib/prism/node.rb, line 1620
def type
  :begin_node
end

返回此节点类型的符号表示形式。请参阅 “Node#type”。