Class: Typedocs::Parser::ObjectBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/typedocs/parser/object_builder.rb

Defined Under Namespace

Modules: Helper

Class Method Summary collapse

Class Method Details

.create_builder_for(klass) ⇒ Object 



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# File 'lib/typedocs/parser/object_builder.rb', line 17

def self.create_builder_for(klass)
  Parslet::Transform.new do
    val = {value: simple(:v)}
    ts = Typedocs::TypeSpec
    h = Helper
    dc = subtree(:_) # dont care
    dc2 = subtree(:__)
    mktype = ->(t, name) {
      unnamed =
        case t
        when Array
          ts::Or.new(t)
        else
          t || ts::Any.new
        end
      if name
        ts::Named.new(name, unnamed)
      else
        unnamed
      end
    }

    rule(method_spec: subtree(:ms)) {
      specs = h.array(ms).map {|tree|
        args_spec = Typedocs::ArgumentsSpec.new
        tree[:arg_specs].each do|as|
          type = as[:t] || Typedocs::TypeSpec::Any.new
          case as[:a]
          when '*'
            args_spec.add_rest(type)
          when '?'
            args_spec.add_optional(type)
          when nil
            args_spec.add_required(type)
          else
            raise "Unknown attr: #{as[:a].inspect}"
          end
        end
        return_spec = tree[:return_spec] || Typedocs::TypeSpec::Void.new
        block_spec =
          tree[:block_spec].tap do|bs|
            break Typedocs::BlockSpec.new(:none, nil) if !bs
            name = bs[:name] ? bs[:name][:value] : nil
            if bs[:attr] == '?'
              break Typedocs::BlockSpec.new(:opt, name)
            else
              break Typedocs::BlockSpec.new(:req, name)
            end
          end
        Typedocs::MethodSpec::Single.new(args_spec, block_spec, return_spec)
      }
      if specs.size > 1
        Typedocs::MethodSpec::AnyOf.new(specs)
      else
        specs.first
      end
    }

    # arg
    rule(type: subtree(:t), attr: simple(:attr)) { {t: mktype[t, nil], a: attr} }
    rule(type: subtree(:t), name: {value: simple(:name)}, attr: simple(:attr)) { {t: mktype[t, name], a: attr} }
    # return
    rule(type: subtree(:t)) { mktype[t, nil] }
    rule(type: subtree(:t), name: {value: simple(:name)}) { mktype[t, name] }

    rule(type_name: val) { ts::TypeIsA.new(klass, v.to_s) }
    rule(defined_type_name: val) { ts::UserDefinedType.new(klass, "@#{v.to_s}") }
    rule(any: dc) { ts::Any.new }
    rule(void: dc) { ts::Void.new }
    rule(array: simple(:v)) { ts::Array.new(v) }
    rule(tuple: {types: subtree(:vs)}) { ts::ArrayAsStruct.new(vs) }
    rule(hash_t: {key_t: simple(:k), val_t: simple(:v)}) { ts::HashType.new(k,v) }
    rule(hash_v: {entries: subtree(:entries), anymore: simple(:anymore)}) {
      kvs = h.array(entries).map{|e|
        k = e[:key_v]
        v = e[:val_t]
        key_v = k.value
        [key_v, v]
      }
      ts::HashValue.new(kvs, !!anymore)
    }

    rule(string_value: val) { ts::Value.new(v.to_s) }
    rule(symbol_value: val) { ts::Value.new(v.to_sym) }
    rule(nil_value: dc) { ts::Value.new(nil) }
  end
end