Sha256: 9a9091f861873ec5a3c94c310359987f2b5e857930cfacaa340a2da9f432e16f
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Size: 1.29 KB
Versions: 14
Compression:
Stored size: 1.29 KB
Contents
require 'ffi-gobject/closure'
module GObject
# This class encapsulates Ruby
# blocks as GObject Closures.
class RubyClosure < Closure
BLOCK_STORE = {}
# Extend the standard GClosure layout with a field block_id to store
# the object_id of the associated block.
class Struct < FFI::Struct
layout :parent, Closure::Struct, 0,
:block_id, :int64
end
def block
BLOCK_STORE[@struct[:block_id]]
end
def block= block
id = block.object_id
BLOCK_STORE[id] = block
@struct[:block_id] = id
end
def invoke_block *args
block.call(*args)
end
def self.new &block
raise ArgumentError unless block_given?
closure = wrap(new_simple(self::Struct.size, nil).to_ptr)
closure.block = block
closure.set_marshal Proc.new {|*args| marshaller(*args)}
return closure
end
def self.marshaller(closure, return_value, n_param_values,
param_values, invocation_hint, marshal_data)
rclosure = wrap(closure.to_ptr)
args = n_param_values.times.map {|idx|
Value.wrap(param_values.to_ptr + idx * Value::Struct.size).ruby_value
}
result = rclosure.invoke_block(*args)
return_value.set_ruby_value(result) unless return_value.nil?
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems