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Make the RPC stuff code more understandable.

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This commit is contained in:
Cheng Zhao 2013-04-26 23:58:49 +08:00
parent da3d4c8408
commit b35946381b
3 changed files with 47 additions and 33 deletions
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45
renderer/api/lib/remote.coffee
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@ -1,63 +1,64 @@
ipc = require 'ipc'
v8_util = process.atom_binding 'v8_util'
generateFromPainObject = (plain) ->
switch plain.type
when 'error' then throw new Error(plain.value)
when 'value' then plain.value
when 'array' then (generateFromPainObject(el) for el in plain.members)
# Transform the description of value into a value or delegate object.
metaToValue = (meta) ->
switch meta.type
when 'error' then throw new Error(meta.value)
when 'value' then meta.value
when 'array' then (metaToValue(el) for el in meta.members)
else
if plain.type is 'function'
if meta.type is 'function'
# A shadow class to represent the remote function object.
ret =
class RemoteFunction
constructor: ->
if @constructor == RemoteFunction
# Constructor call.
obj = ipc.sendChannelSync 'ATOM_INTERNAL_CONSTRUCTOR', plain.id, Array::slice.call(arguments)
obj = ipc.sendChannelSync 'ATOM_INTERNAL_CONSTRUCTOR', meta.id, Array::slice.call(arguments)
# Returning object in constructor will replace constructed object
# with the returned object.
# http://stackoverflow.com/questions/1978049/what-values-can-a-constructor-return-to-avoid-returning-this
return generateFromPainObject obj
return metaToValue obj
else
# Function call.
ret = ipc.sendChannelSync 'ATOM_INTERNAL_FUNCTION_CALL', plain.id, Array::slice.call(arguments)
return generateFromPainObject ret
ret = ipc.sendChannelSync 'ATOM_INTERNAL_FUNCTION_CALL', meta.id, Array::slice.call(arguments)
return metaToValue ret
else
ret = v8_util.createObjectWithName plain.name
ret = v8_util.createObjectWithName meta.name
# Polulate delegate members.
for member in plain.members
for member in meta.members
do (member) ->
if member.type is 'function'
ret[member.name] = ->
# Call member function.
ret = ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_CALL', plain.id, member.name, Array::slice.call(arguments)
generateFromPainObject ret
ret = ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_CALL', meta.id, member.name, Array::slice.call(arguments)
metaToValue ret
else
ret.__defineSetter__ member.name, (value) ->
# Set member data.
ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_SET', plain.id, member.name, value
ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_SET', meta.id, member.name, value
ret.__defineGetter__ member.name, ->
# Get member data.
ret = ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_GET', plain.id, member.name
generateFromPainObject ret
ret = ipc.sendChannelSync 'ATOM_INTERNAL_MEMBER_GET', meta.id, member.name
metaToValue ret
# Track delegate object's life time, and tell the browser to clean up
# when the object is GCed.
v8_util.setDestructor ret, ->
ipc.sendChannel 'ATOM_INTERNAL_DEREFERENCE', plain.storeId
ipc.sendChannel 'ATOM_INTERNAL_DEREFERENCE', meta.storeId
ret
# Get remote module.
exports.require = (module) ->
plain = ipc.sendChannelSync 'ATOM_INTERNAL_REQUIRE', module
generateFromPainObject plain
meta = ipc.sendChannelSync 'ATOM_INTERNAL_REQUIRE', module
metaToValue meta
# Get object with specified id.
exports.getObject = (id) ->
plain = ipc.sendChannelSync 'ATOM_INTERNAL_REFERENCE', id
generateFromPainObject plain
meta = ipc.sendChannelSync 'ATOM_INTERNAL_REFERENCE', id
metaToValue meta