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Move FFI::DataConverter to Ruby (#661)
* Move FFI::DataConverter to Ruby * Include DataConverter in StructByReference in Ruby code to simplify ordering. * Remove no longer used rbffi_Type_Find() * Add license header * The same as errno.rb. DataConverter.c was added by Wayne Meissner.
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# | ||
# Copyright (C) 2008-2010 Wayne Meissner | ||
# | ||
# This file is part of ruby-ffi. | ||
# | ||
# All rights reserved. | ||
# | ||
# Redistribution and use in source and binary forms, with or without | ||
# modification, are permitted provided that the following conditions are met: | ||
# | ||
# * Redistributions of source code must retain the above copyright notice, this | ||
# list of conditions and the following disclaimer. | ||
# * Redistributions in binary form must reproduce the above copyright notice | ||
# this list of conditions and the following disclaimer in the documentation | ||
# and/or other materials provided with the distribution. | ||
# * Neither the name of the Ruby FFI project nor the names of its contributors | ||
# may be used to endorse or promote products derived from this software | ||
# without specific prior written permission. | ||
# | ||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE | ||
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.# | ||
|
||
module FFI | ||
# This module is used to extend somes classes and give then a common API. | ||
# | ||
# Most of methods defined here must be overriden. | ||
module DataConverter | ||
# Get native type. | ||
# | ||
# @overload native_type(type) | ||
# @param [String, Symbol, Type] type | ||
# @return [Type] | ||
# Get native type from +type+. | ||
# | ||
# @overload native_type | ||
# @raise {NotImplementedError} This method must be overriden. | ||
def native_type(type = nil) | ||
if type | ||
@native_type = FFI.find_type(type) | ||
else | ||
native_type = @native_type | ||
unless native_type | ||
raise NotImplementedError, 'native_type method not overridden and no native_type set' | ||
end | ||
native_type | ||
end | ||
end | ||
|
||
# Convert to a native type. | ||
def to_native(value, ctx) | ||
value | ||
end | ||
|
||
# Convert from a native type. | ||
def from_native(value, ctx) | ||
value | ||
end | ||
end | ||
end |
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