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Compute the number of object properties to serialize.

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This commit is contained in:
Karchnu 2020-11-10 20:14:50 +01:00
parent 3ab21c9616
commit 5f838d36cc
1 changed files with 35 additions and 16 deletions
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51
src/cbor/serializable.cr
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@ -136,6 +136,7 @@ module CBOR
end
private def self.new_from_cbor_decoder(decoder : ::CBOR::Decoder)
# puts "self.new_from_cbor_decoder"
instance = allocate
instance.initialize(__decoder_for_cbor_serializable: decoder)
GC.add_finalizer(instance) if instance.responds_to?(:finalize)
@ -268,9 +269,27 @@ module CBOR
{% end %}
{% end %}
cbor.object do
{% for name, value in properties %}
# Compute the size of the final list of properties to serialize.
# This allows a more compact encoding, and a faster decoding.
nb_properties_to_serialize = 0
{% for name, value in properties %}
_{{name}} = @{{name}}
{% unless value[:emit_null] %}
unless _{{name}}.nil?
nb_properties_to_serialize += 1
end
{% else %}
nb_properties_to_serialize += 1
{% end %} # macro unless value[:emit_null]
{% end %} # macro for properties
{% if properties.size > 0 %}
cbor.write_object_start nb_properties_to_serialize
{% for name, value in properties %}
_{{name}} = @{{name}}
{% unless value[:emit_null] %}
unless _{{name}}.nil?
@ -279,23 +298,23 @@ module CBOR
# Write the key of the map
cbor.write({{value[:key]}})
{% if value[:converter] %}
if _{{name}}
{{ value[:converter] }}.to_cbor(_{{name}}, cbor)
else
cbor.write(nil, use_undefined: value[:nil_as_undefined])
end
{% else %}
_{{name}}.to_cbor(cbor)
{% end %}
{% if value[:converter] %}
if _{{name}}
{{ value[:converter] }}.to_cbor(_{{name}}, cbor)
else
cbor.write(nil, use_undefined: value[:nil_as_undefined])
end
{% else %} # macro if value[:converter]
_{{name}}.to_cbor(cbor)
{% end %} # macro if value[:converter]
{% unless value[:emit_null] %}
end
{% end %}
{% end %}
end # unless _{{name}}.nil?
{% end %} # macro unless value[:emit_null]
{% end %} # macro for properties
on_to_cbor(cbor)
end
{% end %}
{% end %} # macro if properties.size > 0
{% end %} # begin
end
module Unmapped