Method: RBS::Environment#insert_decl

Defined in:
lib/rbs/environment.rb

#insert_decl(decl, outer:, namespace:) ⇒ Object 



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# File 'lib/rbs/environment.rb', line 378

def insert_decl(decl, outer:, namespace:)
  case decl
  when AST::Declarations::Class, AST::Declarations::Module
    name = decl.name.with_prefix(namespace)

    if cdecl = constant_entry(name)
      if cdecl.is_a?(ConstantEntry) || cdecl.is_a?(ModuleAliasEntry) || cdecl.is_a?(ClassAliasEntry)
        raise DuplicatedDeclarationError.new(name, decl, cdecl.decl)
      end
    end

    unless class_decls.key?(name)
      case decl
      when AST::Declarations::Class
        class_decls[name] ||= ClassEntry.new(name: name)
      when AST::Declarations::Module
        class_decls[name] ||= ModuleEntry.new(name: name)
      end
    end

    existing_entry = class_decls[name]

    case
    when decl.is_a?(AST::Declarations::Module) && existing_entry.is_a?(ModuleEntry)
      existing_entry.insert(decl: decl, outer: outer)
    when decl.is_a?(AST::Declarations::Class) && existing_entry.is_a?(ClassEntry)
      existing_entry.insert(decl: decl, outer: outer)
    else
      raise DuplicatedDeclarationError.new(name, decl, existing_entry.decls[0].decl)
    end

    prefix = outer + [decl]
    ns = name.to_namespace
    decl.each_decl do |d|
      insert_decl(d, outer: prefix, namespace: ns)
    end

  when AST::Declarations::Interface
    name = decl.name.with_prefix(namespace)

    if interface_entry = interface_decls[name]
      raise DuplicatedDeclarationError.new(name, decl, interface_entry.decl)
    end

    interface_decls[name] = InterfaceEntry.new(name: name, decl: decl, outer: outer)

  when AST::Declarations::TypeAlias
    name = decl.name.with_prefix(namespace)

    if entry = type_alias_decls[name]
      raise DuplicatedDeclarationError.new(name, decl, entry.decl)
    end

    type_alias_decls[name] = TypeAliasEntry.new(name: name, decl: decl, outer: outer)

  when AST::Declarations::Constant
    name = decl.name.with_prefix(namespace)

    if entry = constant_entry(name)
      case entry
      when ClassAliasEntry, ModuleAliasEntry, ConstantEntry
        raise DuplicatedDeclarationError.new(name, decl, entry.decl)
      when ClassEntry, ModuleEntry
        raise DuplicatedDeclarationError.new(name, decl, *entry.decls.map(&:decl))
      end
    end

    constant_decls[name] = ConstantEntry.new(name: name, decl: decl, outer: outer)

  when AST::Declarations::Global
    if entry = global_decls[decl.name]
      raise DuplicatedDeclarationError.new(decl.name, decl, entry.decl)
    end

    global_decls[decl.name] = GlobalEntry.new(name: decl.name, decl: decl, outer: outer)

  when AST::Declarations::ClassAlias, AST::Declarations::ModuleAlias
    name = decl.new_name.with_prefix(namespace)

    if entry = constant_entry(name)
      case entry
      when ClassAliasEntry, ModuleAliasEntry, ConstantEntry
        raise DuplicatedDeclarationError.new(name, decl, entry.decl)
      when ClassEntry, ModuleEntry
        raise DuplicatedDeclarationError.new(name, decl, *entry.decls.map(&:decl))
      end
    end

    case decl
    when AST::Declarations::ClassAlias
      class_alias_decls[name] = ClassAliasEntry.new(name: name, decl: decl, outer: outer)
    when AST::Declarations::ModuleAlias
      class_alias_decls[name] = ModuleAliasEntry.new(name: name, decl: decl, outer: outer)
    end
  end
end