Class: AMQ::Protocol::TableValueDecoder
- Inherits:
-
Object
- Object
- AMQ::Protocol::TableValueDecoder
- Includes:
- TypeConstants
- Defined in:
- lib/amq/protocol/table_value_decoder.rb
Constant Summary
Constants included from TypeConstants
AMQ::Protocol::TypeConstants::BOOLEAN_FALSE, AMQ::Protocol::TypeConstants::BOOLEAN_TRUE, AMQ::Protocol::TypeConstants::TEN, AMQ::Protocol::TypeConstants::TYPE_32BIT_FLOAT, AMQ::Protocol::TypeConstants::TYPE_64BIT_FLOAT, AMQ::Protocol::TypeConstants::TYPE_ARRAY, AMQ::Protocol::TypeConstants::TYPE_BOOLEAN, AMQ::Protocol::TypeConstants::TYPE_BYTE_ARRAY, AMQ::Protocol::TypeConstants::TYPE_DECIMAL, AMQ::Protocol::TypeConstants::TYPE_HASH, AMQ::Protocol::TypeConstants::TYPE_INTEGER, AMQ::Protocol::TypeConstants::TYPE_SIGNED_16BIT, AMQ::Protocol::TypeConstants::TYPE_SIGNED_64BIT, AMQ::Protocol::TypeConstants::TYPE_SIGNED_8BIT, AMQ::Protocol::TypeConstants::TYPE_STRING, AMQ::Protocol::TypeConstants::TYPE_TIME, AMQ::Protocol::TypeConstants::TYPE_VOID
Class Method Summary collapse
- .decode_32bit_float(data, offset) ⇒ Object
- .decode_64bit_float(data, offset) ⇒ Object
-
.decode_array(data, initial_offset) ⇒ Object
API.
- .decode_big_decimal(data, offset) ⇒ Object
- .decode_boolean(data, offset) ⇒ Object
- .decode_hash(data, offset) ⇒ Object
- .decode_integer(data, offset) ⇒ Object
- .decode_long(data, offset) ⇒ Object
- .decode_short(data, offset) ⇒ Object
- .decode_short_short(data, offset) ⇒ Object
- .decode_string(data, offset) ⇒ Object
- .decode_time(data, offset) ⇒ Object
- .decode_value_type(data, offset) ⇒ Object
Class Method Details
.decode_32bit_float(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 145 def self.decode_32bit_float(data, offset) v = data.slice(offset, 4).unpack(PACK_32BIT_FLOAT).first offset += 4 [v, offset] end |
.decode_64bit_float(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 153 def self.decode_64bit_float(data, offset) v = data.slice(offset, 8).unpack(PACK_64BIT_FLOAT).first offset += 8 [v, offset] end |
.decode_array(data, initial_offset) ⇒ Object
API
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# File 'lib/amq/protocol/table_value_decoder.rb', line 24 def self.decode_array(data, initial_offset) array_length = data.slice(initial_offset, 4).unpack(PACK_UINT32).first ary = Array.new offset = initial_offset + 4 while offset <= (initial_offset + array_length) type, offset = decode_value_type(data, offset) i = case type when TYPE_STRING v, offset = decode_string(data, offset) v when TYPE_INTEGER v, offset = decode_integer(data, offset) v when TYPE_DECIMAL v, offset = decode_big_decimal(data, offset) v when TYPE_TIME v, offset = decode_time(data, offset) v when TYPE_HASH v, offset = decode_hash(data, offset) v when TYPE_BOOLEAN v, offset = decode_boolean(data, offset) v when TYPE_SIGNED_8BIT then v, offset = decode_short_short(data, offset) v when TYPE_SIGNED_16BIT then v, offset = decode_short(data, offset) v when TYPE_SIGNED_64BIT then v, offset = decode_long(data, offset) v when TYPE_32BIT_FLOAT then v, offset = decode_32bit_float(data, offset) v when TYPE_64BIT_FLOAT then v, offset = decode_64bit_float(data, offset) v when TYPE_VOID nil when TYPE_ARRAY v, offset = TableValueDecoder.decode_array(data, offset) v else raise ArgumentError.new("unsupported type in a table value: #{type.inspect}, do not know how to decode!") end ary << i end [ary, initial_offset + array_length + 4] end |
.decode_big_decimal(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 120 def self.decode_big_decimal(data, offset) decimals, raw = data.slice(offset, 5).unpack(PACK_UCHAR_UINT32) offset += 5 v = BigDecimal.new(raw.to_s) * (BigDecimal.new(TEN) ** -decimals) [v, offset] end |
.decode_boolean(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 138 def self.decode_boolean(data, offset) integer = data.slice(offset, 2).unpack(PACK_CHAR).first # 0 or 1 offset += 1 [(integer == 1), offset] end |
.decode_hash(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 167 def self.decode_hash(data, offset) length = data.slice(offset, 4).unpack(PACK_UINT32).first v = Table.decode(data.slice(offset, length + 4)) offset += 4 + length [v, offset] end |
.decode_integer(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 94 def self.decode_integer(data, offset) v = data.slice(offset, 4).unpack(PACK_UINT32).first offset += 4 [v, offset] end |
.decode_long(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 103 def self.decode_long(data, offset) v = data.slice(offset, 8).unpack(PACK_INT64) offset += 8 [v, offset] end |
.decode_short(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 182 def self.decode_short(data, offset) v = AMQ::Hacks.unpack_int16_big_endian(data.slice(offset, 2)).first offset += 2 [v, offset] end |
.decode_short_short(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 176 def self.decode_short_short(data, offset) v = data.slice(offset, 1).unpack(PACK_INT8).first offset += 1 [v, offset] end |
.decode_string(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 84 def self.decode_string(data, offset) length = data.slice(offset, 4).unpack(PACK_UINT32).first offset += 4 v = data.slice(offset, length) offset += length [v, offset] end |
.decode_time(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 129 def self.decode_time(data, offset) = data.slice(offset, 8).unpack(PACK_UINT32_X2).last v = Time.at() offset += 8 [v, offset] end |
.decode_value_type(data, offset) ⇒ Object
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# File 'lib/amq/protocol/table_value_decoder.rb', line 161 def self.decode_value_type(data, offset) [data.slice(offset, 1), offset + 1] end |