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add a ruby class wrapper - acts as a JS contructor, reimplement RubyObject#get to treat accessors as properties but otherwise arbitrary methods with arity == 0 should rather act as functions, move all ruby wrappers to a single unit

This commit is contained in:
kares 2011-12-12 22:17:42 +01:00
parent 38d40f6e95
commit 21f62eb245
7 changed files with 199 additions and 173 deletions

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@ -24,6 +24,5 @@ require 'rhino/object'
require 'rhino/context'
require 'rhino/error'
require 'rhino/rhino_ext'
require 'rhino/ruby_object'
require 'rhino/ruby_function'
require 'rhino/ruby'
require 'rhino/deprecations'

173
lib/rhino/ruby.rb Normal file
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@ -0,0 +1,173 @@
module Rhino
class RubyObject < JS::ScriptableObject
include JS::Wrapper
# wrap an arbitrary (ruby) object
def self.wrap(object)
new(object)
end
def initialize(object)
super()
@ruby = object
end
# abstract Object Wrapper#unwrap();
def unwrap
@ruby
end
# abstract String Scriptable#getClassName();
def getClassName
@ruby.class.name
end
def toString
"[ruby #{getClassName}]" # [object User]
end
# override Object Scriptable#get(String name, Scriptable start);
# override Object Scriptable#get(int index, Scriptable start);
def get(name, start)
if name.is_a?(String)
if @ruby.respond_to?(name)
method = @ruby.method(name)
if method.arity == 0 && # check if it is an attr_reader
( @ruby.respond_to?("#{name}=") || @ruby.instance_variables.include?("@#{name}") )
begin
return Rhino.to_javascript(method.call, self)
rescue => e
raise RubyFunction.wrap_error(e)
end
else
return RubyFunction.new(@ruby.method(name))
end
end
end
super
end
# override boolean Scriptable#has(String name, Scriptable start);
# override boolean Scriptable#has(int index, Scriptable start);
def has(name, start)
if name.is_a?(String)
if @ruby.respond_to?(name) ||
@ruby.respond_to?("#{name}=") # might have a writer but no reader
return true
end
end
super
end
# override void Scriptable#put(String name, Scriptable start, Object value);
# override void Scriptable#put(int index, Scriptable start, Object value);
def put(name, start, value)
if name.is_a?(String)
if @ruby.respond_to?(set_name = "#{name}=")
return @ruby.send(set_name, Rhino.to_ruby(value))
end
end
super
end
# override Object[] Scriptable#getIds();
def getIds
ids = []
@ruby.public_methods(false).each do |name|
name = name[0...-1] if name[-1, 1] == '=' # 'foo=' ... 'foo'
name = name.to_java # java.lang.String
ids << name unless ids.include?(name)
end
super.each { |id| ids.unshift(id) }
ids.to_java
end
# protected Object ScriptableObject#equivalentValues(Object value)
def equivalentValues(other) # JS == operator
other.is_a?(RubyObject) && unwrap.eql?(other.unwrap)
end
end
class RubyFunction < JS::BaseFunction
# wrap a callable (Method/Proc)
def self.wrap(callable)
new(callable)
end
def self.wrap_error(e)
JS::WrappedException.new(org.jruby.exceptions.RaiseException.new(e))
end
def initialize(callable)
super()
@callable = callable
end
def unwrap
@callable
end
# protected Object ScriptableObject#equivalentValues(Object value)
def equivalentValues(other) # JS == operator
return false unless other.is_a?(RubyFunction)
return true if unwrap == other.unwrap
# Method.== does check if their bind to the same object
# JS == means they might be bind to different objects :
unwrap.to_s == other.unwrap.to_s # "#<Method: Foo#bar>"
end
# override Object ScriptableObject#getPrototype()
def getPrototype
unless proto = super
#proto = ScriptableObject.getFunctionPrototype(getParentScope)
#setPrototype(proto)
end
proto
end
# override Object BaseFunction#call(Context context, Scriptable scope,
# Scriptable thisObj, Object[] args)
def call(context, scope, this, args)
rb_args = Rhino.args_to_ruby(args.to_a)
begin
result = @callable.call(*rb_args)
rescue => e
# ... correct wrapping thus it's try { } catch (e) works in JS :
raise self.class.wrap_error(e)
end
Rhino.to_javascript(result, scope)
end
end
class RubyConstructor < RubyFunction
include JS::Wrapper
# wrap a ruby class as as constructor function
def self.wrap(klass)
new(klass)
end
def initialize(klass)
super(klass.method(:new))
@klass = klass
end
def unwrap
@klass
end
# override boolean Scriptable#hasInstance(Scriptable instance);
def hasInstance(instance)
return false unless instance
return true if instance.is_a?(@klass)
instance.is_a?(RubyObject) && instance.unwrap.is_a?(@klass)
end
end
end

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@ -1,39 +0,0 @@
module Rhino
class RubyFunction < JS::BaseFunction
def initialize(callable)
super()
@callable = callable
end
def unwrap
@callable
end
# override Object BaseFunction#call(Context context, Scriptable scope,
# Scriptable thisObj, Object[] args)
def call(context, scope, this, args)
rb_args = Rhino.args_to_ruby(args.to_a)
begin
result = @callable.call(*rb_args)
rescue => e
# ... correct wrapping thus it's try { } catch (e) works in JS :
raise JS::WrappedException.new(org.jruby.exceptions.RaiseException.new(e))
end
Rhino.to_javascript(result, scope)
end
# protected Object ScriptableObject#equivalentValues(Object value)
def equivalentValues(other) # JS == operator
return false unless other.is_a?(RubyFunction)
return true if unwrap == other.unwrap
# Method.== does check if their bind to the same object
# JS == means they might be bind to different objects :
unwrap.to_s == other.unwrap.to_s # "#<Method: Foo#bar>"
end
end
end

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@ -1,109 +0,0 @@
module Rhino
class RubyObject < JS::ScriptableObject
include JS::Wrapper
def initialize(object)
super()
@ruby = object
end
# abstract Object Wrapper#unwrap();
def unwrap
@ruby
end
# abstract String Scriptable#getClassName();
def getClassName
@ruby.class.name
end
def toString
"[ruby #{getClassName}]" # [object User]
end
# override Object Scriptable#get(String name, Scriptable start);
# override Object Scriptable#get(int index, Scriptable start);
def get(name, start)
if name.is_a?(String)
# NOTE: preferrably when using a ruby object in JS methods should
# be used but instance variables will work as well but if there's
# a attr reader it is given a preference e.g. :
#
# class Foo
# attr_reader :bar2
# def initialize
# @bar1 = 'bar1'
# @bar2 = 'bar2'
# end
# end
#
# fooObj.bar1; // 'bar1'
# fooObj.bar2; // function
# fooObj.bar2(); // 'bar2'
#
if @ruby.respond_to?(name)
return RubyFunction.new(@ruby.method(name))
elsif @ruby.instance_variables.include?(var_name = "@#{name}")
var_value = @ruby.instance_variable_get(var_name)
return Rhino.to_javascript(var_value, self)
end
end
super
end
# override boolean Scriptable#has(String name, Scriptable start);
# override boolean Scriptable#has(int index, Scriptable start);
def has(name, start)
if name.is_a?(String)
if @ruby.respond_to?(name) ||
@ruby.instance_variables.include?("@#{name}")
return true
end
end
super
end
# override void Scriptable#put(String name, Scriptable start, Object value);
# override void Scriptable#put(int index, Scriptable start, Object value);
def put(name, start, value)
if name.is_a?(String)
if @ruby.respond_to?(set_name = "#{name}=")
return @ruby.send(set_name, Rhino.to_ruby(value))
end
end
super
end
# override boolean Scriptable#hasInstance(Scriptable instance);
def hasInstance(instance)
super
end
# override Object[] Scriptable#getIds();
def getIds
ids = @ruby.instance_variables.map { |ivar| ivar[1..-1].to_java }
@ruby.public_methods(false).each do |name|
name = name[0...-1] if name[-1, 1] == '=' # 'foo=' ... 'foo'
name = name.to_java
ids << name unless ids.include?(name)
end
super.each { |id| ids.unshift(id) }
ids.to_java
end
# protected Object ScriptableObject#equivalentValues(Object value)
def equivalentValues(other) # JS == operator
other.is_a?(RubyObject) && unwrap.eql?(other.unwrap)
end
# def equals(other)
# other.is_a?(RubyObject) && unwrap.eql?(other.unwrap)
# end
#
# def hashCode
# unwrap.hash
# end
end
end

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@ -20,9 +20,10 @@ module Rhino
when Array then array_to_javascript(object, scope)
when Hash then hash_to_javascript(object, scope)
when Time then time_to_javascript(object, scope)
when Proc, Method then RubyFunction.new(object)
when Proc, Method then RubyFunction.wrap(object)
when JS::Scriptable then object
else RubyObject.new(object)
when Class then RubyConstructor.wrap(object)
else RubyObject.wrap(object)
end
end

View file

@ -3,12 +3,12 @@ require File.expand_path('../spec_helper', File.dirname(__FILE__))
describe Rhino::RubyFunction do
it "create and unwrap ruby function" do
rb_function = Rhino::RubyFunction.new method = Object.new.method(:to_s)
rb_function = Rhino::RubyFunction.wrap method = Object.new.method(:to_s)
rb_function.unwrap.should be(method)
end
it "call a ruby function" do
rb_function = Rhino::RubyFunction.new method = 'foo'.method(:to_s)
rb_function = Rhino::RubyFunction.wrap method = 'foo'.method(:to_s)
context = nil; scope = nil; this = nil; args = nil
rb_function.call(context, scope, this, args).should == 'foo'
end
@ -19,7 +19,7 @@ describe Rhino::RubyFunction do
array.all? { |elem| elem.is_a?(String) }
end
end
rb_function = Rhino::RubyFunction.new method = klass.new.method(:foo)
rb_function = Rhino::RubyFunction.wrap method = klass.new.method(:foo)
context = nil; scope = nil; this = nil
args = [ '1'.to_java, java.lang.String.new('2') ].to_java
args = [ Rhino::JS::NativeArray.new(args) ].to_java
@ -32,7 +32,7 @@ describe Rhino::RubyFunction do
[ 42 ]
end
end
rb_function = Rhino::RubyFunction.new method = klass.new.method(:foo)
rb_function = Rhino::RubyFunction.wrap method = klass.new.method(:foo)
context = nil; scope = nil; this = nil; args = [].to_java
rb_function.call(context, scope, this, args).should be_a(Rhino::JS::NativeArray)
end

View file

@ -3,7 +3,7 @@ require File.expand_path('../spec_helper', File.dirname(__FILE__))
describe Rhino::RubyObject do
it "unwraps a ruby object" do
rb_object = Rhino::RubyObject.new object = Object.new
rb_object = Rhino::RubyObject.wrap object = Object.new
rb_object.unwrap.should be(object)
end
@ -11,12 +11,12 @@ describe Rhino::RubyObject do
end
it "returns the ruby class name" do
rb_object = Rhino::RubyObject.new UII.new
rb_object = Rhino::RubyObject.wrap UII.new
rb_object.getClassName.should == UII.name
end
it "reports being a ruby object on toString" do
rb_object = Rhino::RubyObject.new UII.new
rb_object = Rhino::RubyObject.wrap UII.new
rb_object.toString.should == '[ruby UII]'
end
@ -28,10 +28,10 @@ describe Rhino::RubyObject do
def initialize
@anAttr0 = nil
@the_attr_1 = 'attr_1'
@an_attr_2 = 'an_attr_2'
@an_attr_2 = 'attr_2'
end
def theMethod0; nil; end
def theMethod0; @theMethod0; end
def a_method1; 1; end
@ -40,11 +40,11 @@ describe Rhino::RubyObject do
end
it "gets methods and instance variables" do
rb_object = Rhino::RubyObject.new UII.new
rb_object = Rhino::RubyObject.wrap UII.new
rb_object.get('anAttr0', nil).should be_a(Rhino::RubyFunction)
rb_object.get('the_attr_1', nil).should be_a(Rhino::RubyFunction)
rb_object.get('an_attr_2', nil).should == 'an_attr_2'
rb_object.get('anAttr0', nil).should be_nil
rb_object.get('the_attr_1', nil).should == 'attr_1'
rb_object.get('an_attr_2', nil).should be(Rhino::JS::Scriptable::NOT_FOUND) # no reader
[ 'theMethod0', 'a_method1', 'the_method_2' ].each do |name|
rb_object.get(name, nil).should be_a(Rhino::RubyFunction)
@ -54,11 +54,11 @@ describe Rhino::RubyObject do
end
it "has methods and instance variables" do
rb_object = Rhino::RubyObject.new UII.new
rb_object = Rhino::RubyObject.wrap UII.new
rb_object.has('anAttr0', nil).should be_true
rb_object.has('the_attr_1', nil).should be_true
rb_object.has('an_attr_2', nil).should be_true
rb_object.has('an_attr_2', nil).should be_false # no reader nor writer
[ 'theMethod0', 'a_method1', 'the_method_2' ].each do |name|
rb_object.has(name, nil).should be_true
@ -70,7 +70,7 @@ describe Rhino::RubyObject do
it "puts using attr writer" do
start = mock('start')
start.expects(:put).never
rb_object = Rhino::RubyObject.new UII.new
rb_object = Rhino::RubyObject.wrap UII.new
rb_object.put('the_attr_1', start, 42)
rb_object.the_attr_1.should == 42
@ -79,24 +79,25 @@ describe Rhino::RubyObject do
it "puts a non-existent attr (delegates to start)" do
start = mock('start')
start.expects(:put).once
rb_object = Rhino::RubyObject.new UII.new
rb_object = Rhino::RubyObject.wrap UII.new
rb_object.put('nonExistingAttr', start, 42)
end
it "getIds include ruby class methods" do
rb_object = Rhino::RubyObject.new UII.new
rb_object = Rhino::RubyObject.wrap UII.new
[ 'anAttr0', 'the_attr_1', 'an_attr_2' ].each do |attr|
[ 'anAttr0', 'the_attr_1' ].each do |attr|
rb_object.getIds.to_a.should include(attr)
end
rb_object.getIds.to_a.should_not include('an_attr_2')
[ 'theMethod0', 'a_method1', 'the_method_2' ].each do |method|
rb_object.getIds.to_a.should include(method)
end
end
it "getIds include ruby instance methods" do
rb_object = Rhino::RubyObject.new object = UII.new
rb_object = Rhino::RubyObject.wrap object = UII.new
object.instance_eval do
def foo; 'foo'; end
end
@ -105,7 +106,7 @@ describe Rhino::RubyObject do
end
it "getIds include writers as attr names" do
rb_object = Rhino::RubyObject.new object = UII.new
rb_object = Rhino::RubyObject.wrap object = UII.new
rb_object.getIds.to_a.should include('the_attr_1')
rb_object.getIds.to_a.should_not include('the_attr_1=')