class Prism::CaseNode
表示 case 语句的使用。
case true when false end ^^^^^^^^^^
属性
表示 case 语句的条件。
case true; when false; end
^^^^^^^^^^
表示 case 语句的 else 子句。
case true; when false; else; end
^^^^
表示 case 语句的谓词。可以是 nil 或任何 非空表达式。
case true; when false; end
^^^^
Public Class Methods
Source
# File lib/prism/node.rb, line 3715 def initialize(source, node_id, location, flags, predicate, conditions, else_clause, case_keyword_loc, end_keyword_loc) @source = source @node_id = node_id @location = location @flags = flags @predicate = predicate @conditions = conditions @else_clause = else_clause @case_keyword_loc = case_keyword_loc @end_keyword_loc = end_keyword_loc end
初始化一个新的 CaseNode 节点。
Public Instance Methods
Source
# File lib/prism/node.rb, line 3841 def ===(other) other.is_a?(CaseNode) && (predicate === other.predicate) && (conditions.length == other.conditions.length) && conditions.zip(other.conditions).all? { |left, right| left === right } && (else_clause === other.else_clause) && (case_keyword_loc.nil? == other.case_keyword_loc.nil?) && (end_keyword_loc.nil? == other.end_keyword_loc.nil?) end
实现节点的相等性判断。这实际上是 ==,但不比较 location 的值。仅检查 location 是否存在。
Source
# File lib/prism/node.rb, line 3728 def accept(visitor) visitor.visit_case_node(self) end
def accept: (Visitor visitor) -> void
Source
# File lib/prism/node.rb, line 3815 def case_keyword case_keyword_loc.slice end
def case_keyword: () -> String
Source
# File lib/prism/node.rb, line 3786 def case_keyword_loc location = @case_keyword_loc return location if location.is_a?(Location) @case_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end
表示 case 关键字的位置。
case true; when false; end ^^^^
Source
# File lib/prism/node.rb, line 3733 def child_nodes [predicate, *conditions, else_clause] end
def child_nodes: () -> Array
也别名:deconstruct
Source
# File lib/prism/node.rb, line 3747 def comment_targets [*predicate, *conditions, *else_clause, case_keyword_loc, end_keyword_loc] #: Array[Prism::node | Location] end
def comment_targets: () -> Array[Node | Location]
Source
# File lib/prism/node.rb, line 3738 def compact_child_nodes compact = [] #: Array[Prism::node] compact << predicate if predicate compact.concat(conditions) compact << else_clause if else_clause compact end
def compact_child_nodes: () -> Array
Source
# File lib/prism/node_ext.rb, line 479 def consequent deprecated("else_clause") else_clause end
返回 case 节点的 else 子句。此方法已弃用,建议使用 else_clause。
Source
# File lib/prism/node.rb, line 3752 def copy(node_id: self.node_id, location: self.location, flags: self.flags, predicate: self.predicate, conditions: self.conditions, else_clause: self.else_clause, case_keyword_loc: self.case_keyword_loc, end_keyword_loc: self.end_keyword_loc) CaseNode.new(source, node_id, location, flags, predicate, conditions, else_clause, case_keyword_loc, end_keyword_loc) end
Source
# File lib/prism/node.rb, line 3760 def deconstruct_keys(keys) { node_id: node_id, location: location, predicate: predicate, conditions: conditions, else_clause: else_clause, case_keyword_loc: case_keyword_loc, end_keyword_loc: end_keyword_loc } end
def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, predicate: Prism::node?, conditions: Array, else_clause: ElseNode?, case_keyword_loc: Location, end_keyword_loc: Location }
Source
# File lib/prism/node.rb, line 3820 def end_keyword end_keyword_loc.slice end
def end_keyword: () -> String
Source
# File lib/prism/node.rb, line 3802 def end_keyword_loc location = @end_keyword_loc return location if location.is_a?(Location) @end_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end
表示 end 关键字的位置。
case true; when false; end
^^^
Source
# File lib/prism/node.rb, line 3825 def inspect InspectVisitor.compose(self) end
def inspect -> String
Source
# File lib/prism/node.rb, line 3794 def save_case_keyword_loc(repository) repository.enter(node_id, :case_keyword_loc) end
使用给定的保存源保存 case_keyword_loc 位置,以便以后检索。
Source
# File lib/prism/node.rb, line 3810 def save_end_keyword_loc(repository) repository.enter(node_id, :end_keyword_loc) end
使用给定的保存源保存 end_keyword_loc 位置,以便以后检索。