Class: JavaClass::Method

Inherits:
Member
  • Object
show all
Defined in:
lib/javaclass/member.rb

Overview

Method

Instance Attribute Summary

Attributes inherited from Member

#access_flag, #attributes, #descriptor_index, #java_class, #name_index

Instance Method Summary collapse

Methods inherited from Member

#descriptor, #name, #to_bytes

Methods included from Item

#annotations, #deprecated?, #signature

Methods included from Converters

convert_code, convert_field_descriptor, convert_method_descriptor

Methods included from Base

#==, #===, #dump, #eql?, #hash, #to_byte

Constructor Details

#initialize(java_class) ⇒ Method

コンストラクタ

*java_class::Methodの所有者であるJavaクラス



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# File 'lib/javaclass/member.rb', line 104

def initialize( java_class )
  super( java_class )
end

Instance Method Details

#exceptions ⇒ Object

メソッドで発生する例外のクラス名を配列で取得する

戻り値::メソッドで発生する例外クラス名の配列



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# File 'lib/javaclass/member.rb', line 113

def exceptions 
  (attributes.key? "Exceptions") ? 
    attributes["Exceptions"].exceptions.map{|i|i.name} : []
end

#parameter_annotations(index) ⇒ Object

指定したパラメータに設定されているアノテーションを配列で取得する。

戻り値::アノテーションの配列



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# File 'lib/javaclass/member.rb', line 138

def parameter_annotations(index)
  ['RuntimeVisibleParameterAnnotations', 
   'RuntimeInvisibleParameterAnnotations'].inject([]) { |l, k|
      l.concat( attributes[k][index] ) if attributes.key? k
      l
  }
end

#parameters ⇒ Object

引数のクラス名を配列で取得する

戻り値::引数のクラス名の配列



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# File 'lib/javaclass/member.rb', line 122

def parameters
  convert_method_descriptor( descriptor )[:args]
end

#return_type ⇒ Object

メソッドの戻り値クラス名を取得する

戻り値::メソッドの戻り値クラス名



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# File 'lib/javaclass/member.rb', line 130

def return_type
  convert_method_descriptor( descriptor )[:return]
end

#to_s ⇒ Object 



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# File 'lib/javaclass/member.rb', line 146

def to_s
  str = ""
  str << attributes["Signature"].to_s << "\n" if attributes.key? "Signature"
  str << "// !deprecated!\n" if deprecated?
  str << annotations.inject( "" ){|s, e| s << e.to_s << "\n" }
  d = convert_method_descriptor( descriptor )
  i = 0
  args = d[:args].map(){|item|
     a = parameter_annotations(i)
     tmp = a.length > 0 ? a.map(){|a| a.to_s}.join("\n") << " " : ""
     i+=1
     tmp << "#{item} arg#{i}"
  }.join(", ")
  datas = []
  datas << access_flag.to_s if access_flag.to_s.length > 0
  datas << d[:return]
  datas << name
  datas << "("
  datas << args
  datas << ")"
  str << datas.join(" ")
  str << "\n" << attributes["Exceptions"].to_s if attributes.key? "Exceptions"
  if ( attributes.key? "Code")
    str << " {\n"
    codes = attributes["Code"]
    local_types = codes.attributes["LocalVariableTypeTable"] if codes.attributes.key? "LocalVariableTypeTable"

    if codes.attributes.key? "LocalVariableTable"
      codes.attributes["LocalVariableTable"].local_variable_table.each {|l|
        type = local_types.find_by_index(l.index) if local_types != nil
        str << "    // signature " << type.signature << "\n" if type != nil
        str << "    " << convert_field_descriptor(l.descriptor)
        str << " " << l.name << ";\n"
      }
    end
    str << "\n"
    lines = codes.attributes["LineNumberTable"] if codes.attributes.key? "LineNumberTable"
    codes.codes.each_index {|i|
      str << "    " << codes.codes[i].to_s
      str << " // #{lines.line_number(i)}" if lines != nil && lines.line_number(i) != nil
      str << "\n";
    }
    str << "}"
  end
  str << " #{attributes['AnnotationDefault'].to_s}" if attributes.key? 'AnnotationDefault'
  return str
end