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# -*- coding: utf-8 -*-
from __future__ import print_function
def genSingleEncode(spec, cValue, unresolved_domain):
buffer = []
type = spec.resolveDomain(unresolved_domain)
if type == 'shortstr':
buffer.append("buffer << %s.to_s.bytesize.chr" % (cValue,))
buffer.append("buffer << %s.to_s" % (cValue,))
elif type == 'longstr':
buffer.append("buffer << [%s.to_s.bytesize].pack(PACK_UINT32)" % (cValue,))
buffer.append("buffer << %s.to_s" % (cValue,))
elif type == 'octet':
buffer.append("buffer << [%s].pack(PACK_CHAR)" % (cValue,))
elif type == 'short':
buffer.append("buffer << [%s].pack(PACK_UINT16)" % (cValue,))
elif type == 'long':
buffer.append("buffer << [%s].pack(PACK_UINT32)" % (cValue,))
elif type == 'longlong':
buffer.append("buffer << AMQ::Pack.pack_uint64_big_endian(%s)" % (cValue,))
elif type == 'timestamp':
buffer.append("buffer << AMQ::Pack.pack_uint64_big_endian(%s)" % (cValue,))
elif type == 'bit':
raise "Can't encode bit in genSingleEncode"
elif type == 'table':
buffer.append("buffer << AMQ::Protocol::Table.encode(%s)" % (cValue,))
else:
raise "Illegal domain in genSingleEncode: {0}".format(type)
return buffer
def genSingleDecode(spec, field):
cLvalue = field.ruby_name
unresolved_domain = field.domain
if cLvalue == "known_hosts":
import sys
print(field, field.ignored, file = sys.stderr)
type = spec.resolveDomain(unresolved_domain)
buffer = []
if type == 'shortstr':
buffer.append("length = data[offset, 1].unpack(PACK_CHAR).first")
buffer.append("offset += 1")
buffer.append("%s = data[offset, length]" % (cLvalue,))
buffer.append("offset += length")
elif type == 'longstr':
buffer.append("length = data[offset, 4].unpack(PACK_UINT32).first")
buffer.append("offset += 4")
buffer.append("%s = data[offset, length]" % (cLvalue,))
buffer.append("offset += length")
elif type == 'octet':
buffer.append("%s = data[offset, 1].unpack(PACK_CHAR).first" % (cLvalue,))
buffer.append("offset += 1")
elif type == 'short':
buffer.append("%s = data[offset, 2].unpack(PACK_UINT16).first" % (cLvalue,))
buffer.append("offset += 2")
elif type == 'long':
buffer.append("%s = data[offset, 4].unpack(PACK_UINT32).first" % (cLvalue,))
buffer.append("offset += 4")
elif type == 'longlong':
buffer.append("%s = AMQ::Pack.unpack_uint64_big_endian(data[offset, 8]).first" % (cLvalue,))
buffer.append("offset += 8")
elif type == 'timestamp':
buffer.append("%s = data[offset, 8].unpack(PACK_UINT64_BE).first" % (cLvalue,))
buffer.append("offset += 8")
elif type == 'bit':
raise "Can't decode bit in genSingleDecode"
elif type == 'table':
buffer.append("table_length = Table.length(data[offset, 4])")
buffer.append("%s = Table.decode(data[offset, table_length + 4])" % (cLvalue,))
buffer.append("offset += table_length + 4")
else:
raise StandardError("Illegal domain '{0}' in genSingleDecode".format(type))
return buffer
def genSingleSimpleDecode(spec, field):
cLvalue = field.ruby_name
unresolved_domain = field.domain
if cLvalue == "known_hosts":
import sys
print >> sys.stderr, field, field.ignored
type = spec.resolveDomain(unresolved_domain)
buffer = []
if type == 'shortstr':
buffer.append("data.to_s")
elif type == 'longstr':
buffer.append("data.to_s")
elif type == 'octet':
buffer.append("data.unpack(PACK_INT8).first")
elif type == 'short':
buffer.append("data.unpack(PACK_UINT16).first")
elif type == 'long':
buffer.append("data.unpack(PACK_UINT32).first")
elif type == 'longlong':
buffer.append("AMQ::Pack.unpack_uint64_big_endian(data).first")
elif type == 'timestamp':
buffer.append("Time.at(data.unpack(PACK_UINT64_BE).last)")
elif type == 'bit':
raise "Can't decode bit in genSingleDecode"
elif type == 'table':
buffer.append("Table.decode(data)")
else:
raise StandardError("Illegal domain '" + type + "' in genSingleSimpleDecode")
return buffer
def genEncodeMethodDefinition(spec, m):
def finishBits():
if bit_index is not None:
buffer.append("buffer << [bit_buffer].pack(PACK_CHAR)")
bit_index = None
buffer = []
for f in m.arguments:
if spec.resolveDomain(f.domain) == 'bit':
if bit_index is None:
bit_index = 0
buffer.append("bit_buffer = 0")
if bit_index >= 8:
finishBits()
buffer.append("bit_buffer = 0")
bit_index = 0
buffer.append("bit_buffer = bit_buffer | (1 << %d) if %s" % (bit_index, f.ruby_name))
bit_index = bit_index + 1
else:
finishBits()
bit_index = None
buffer += genSingleEncode(spec, f.ruby_name, f.domain)
finishBits()
return buffer
def genDecodeMethodDefinition(spec, m):
buffer = []
bitindex = None
for f in m.arguments:
if spec.resolveDomain(f.domain) == 'bit':
if bitindex is None:
bitindex = 0
if bitindex >= 8:
bitindex = 0
if bitindex == 0:
buffer.append("bit_buffer = data[offset, 1].unpack(PACK_CHAR).first")
buffer.append("offset += 1")
buffer.append("%s = (bit_buffer & (1 << %d)) != 0" % (f.ruby_name, bitindex))
#### TODO: ADD bitindex TO THE buffer
else:
buffer.append("%s = (bit_buffer & (1 << %d)) != 0" % (f.ruby_name, bitindex))
bitindex = bitindex + 1
else:
bitindex = None
buffer += genSingleDecode(spec, f)
return buffer
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