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# Copyright (C) 2018-2019 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. 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.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
require_relative 'Fits'
class Metadata
@@emitter_local = nil
def initialize(fields, initializers)
@fields = fields
@initializers = initializers
end
def empty?
@fields.nil?
end
def length
empty? ? 0 : @fields.length
end
def struct(op)
return if empty?
def generateOffsetOfFunctions(prefix, fieldNames)
fieldNames.map do |fieldName|
"#{prefix}static constexpr ptrdiff_t offsetOf#{fieldName[0].upcase}#{fieldName[1..-1]}() { return OBJECT_OFFSETOF(Metadata, m_#{fieldName}); }"
end.join("\n")
end
def convertFields(prefix, fields, fieldNames)
fields.map do |field, type|
if type.kind_of? Hash
"#{prefix}union {\n#{convertFields(prefix + ' ', type, fieldNames)}\n#{prefix}};"
else
fieldName = field.to_s
fieldNames.push(fieldName)
"#{prefix}#{type.to_s} m_#{fieldName};"
end
end.join("\n")
end
fieldNames = []
prefix = " "
fields = convertFields(prefix, @fields, fieldNames)
fields = fields + "\n" + generateOffsetOfFunctions(prefix, fieldNames)
inits = nil
if @initializers && (not @initializers.empty?)
inits = "\n : " + @initializers.map do |metadata, arg|
"m_#{metadata}(__op.m_#{arg})"
end.join("\n , ").concat("\n ");
end
<<-EOF
struct Metadata {
WTF_MAKE_NONCOPYABLE(Metadata);
public:
#{op.opcodeID}
Metadata(const #{op.capitalized_name}&#{" __op" if inits})#{inits} { }
#{fields}
};
EOF
end
def accessor
return if empty?
<<-EOF
Metadata& metadata(CodeBlock* codeBlock) const
{
return codeBlock->metadata<Metadata>(opcodeID, #{Metadata.field_name});
}
EOF
end
def field(prefix)
return if empty?
"\n#{prefix}unsigned #{Metadata.field_name};"
end
def load_from_stream(index, size)
return if empty?
"#{Metadata.field_name}(#{Fits::convert(size, "stream[#{index}]", :unsigned)})"
end
def create_emitter_local
return if empty?
<<-EOF.chomp
auto #{emitter_local.name} = gen->addMetadataFor(opcodeID);
EOF
end
def emitter_local_name
"__metadataID"
end
def emitter_local
unless @@emitter_local
@@emitter_local = Argument.new(emitter_local_name, :unsigned, -1)
end
return @@emitter_local
end
def self.field_name
"m_metadataID"
end
end
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