def test_multinames():
asm = assembler.CodeAssembler([])
asm.emit("getlex", "String")
const = constants.ConstantPool()
const.write(asm)
assert const.multiname.value_at(1) == constants.QName("String")
def test_simple():
asm = assembler.CodeAssembler([])
asm.emit("pushint", 25)
asm.emit("pushstring", "Hello")
const = constants.ConstantPool()
const.write(asm)
assert const.int.value_at(1) == 25
assert const.utf8.value_at(1) == "Hello"
def test_conflicts():
asm = assembler.CodeAssembler([])
inst1 = asm.emit("pushint", 25)
inst2 = asm.emit("pushint", 25)
assert inst1 is not inst2
const = constants.ConstantPool()
const.write(asm)
assert inst1._arg_index == 1
assert inst2._arg_index == 1
def test_serialization():
asm = assembler.CodeAssembler([])
asm.emit("pushint", 25)
asm.emit("pushstring", "Hello")
const = constants.ConstantPool()
const.write(asm)
bytes = const.serialize()
assert bytes == (
"\x02\x19" # int
"\x01\x01" # uint, double
"\x02\x05Hello" # utf8
"\x01\x01\x01") # namespace, nsset, mn
def test_defaults():
asm = assembler.CodeAssembler([])
pi = asm.emit("pushint", 0)
pu = asm.emit("pushuint", 0)
pd = asm.emit("pushdouble", float('nan'))
ps = asm.emit("pushstring", "")
const = constants.ConstantPool()
const.write(asm)
assert pi._arg_index == 0
assert pu._arg_index == 0
# NaN is a tricky situation in ValuePools.
assert pd._arg_index == 0
# "" should be assigned to 1 in the case of pushstring.
assert ps._arg_index == 1
def assemble(asm):
const = constants.ConstantPool()
const.write(asm)
asm.pass1()
return const, asm.serialize()