def byteString(self):
ret = u1(self.op.opcode)
for arg in self.args:
# TODO reconsider this, maybe just have local and global symbol tables
if isinstance(arg, LabelRef):
if not labelTable.has_key(arg):
raise UnknownLabel(arg)
ret += u1(labelTable[arg])
elif isinstance(arg, SymbolRef):
name = arg.name
if not symbolTable.has_key(name):
if log.getEffectiveLevel() <= ERROR:
log.error("Unknown symbol " + name + ": " + ` symbolTable `)
raise UnknownSymbol(name)
if log.getEffectiveLevel() <= DEBUG:
log.debug(
"resolving symbol $" + name + " to " + ` symbolTable[name] ` + "(" + ` symbolTable ` + ")"
)
for b in symbolTable[name]: # list of bytes
ret += u1(b)
else:
ret += u1(arg) # arg is an integer
return ret
def write(self, stream):
stream.write(u1(self.tag))
stream.write(self.bytes)
def write(self, stream):
stream.write(u1(self.tag))
l = len(self.bytes)
stream.write(u2(l))
stream.write(self.bytes)
def write(self, stream):
stream.write(u2(self.attribute_name_index))
stream.write(u4(self.size - 6))
stream.write(u2(len(self.line_number_table)))
for entry in self.line_number_table:
log.info('line number pair ' + `entry`)
stream.write(u2(entry[0]))
stream.write(u2(entry[1]))
SIZE_OF_EXCEPTION_TABLE_ENTRY = 8
EMPTY_METHOD = u1(jopcode.getOperation('return').opcode)
class Code_attribute(object):
def __init__(self, owningClass, max_stack = 0, max_locals = 0, code = EMPTY_METHOD, exception_table = [], attributes = []):
if log.getEffectiveLevel() <= DEBUG:
log.debug('Code_attribute(' + `owningClass` + ', ' + `max_stack` + ', ' + `max_locals` + ', ' + `code` + ', ' + `exception_table` + ', ' + `attributes` + ')')
self.attribute_name_index = owningClass.utf8Constant(ATTR_CODE)
# Size of max_stack, max_locals, code_length, exception_table_length,
# attributes_count = 12.
# Size of attribute.name_index, length = 6
# attributes that go on a code attribute must now support size member
self.attribute_length = len(code) + SIZE_OF_EXCEPTION_TABLE_ENTRY * len (exception_table) + reduce(lambda x, y: x + y.size, attributes, 0) + 12