def test_evm_versions(tmp_path):
# should compile differently because of SELFBALANCE
code = """
@public
def foo() -> uint256:
return self.balance
"""
bar_path = tmp_path.joinpath('bar.vy')
with bar_path.open('w') as fp:
fp.write(code)
byzantium_bytecode = compile_files(
[bar_path],
output_formats=['bytecode'],
evm_version="byzantium"
)[str(bar_path)]['bytecode']
istanbul_bytecode = compile_files(
[bar_path],
output_formats=['bytecode'],
evm_version="istanbul"
)[str(bar_path)]['bytecode']
assert byzantium_bytecode != istanbul_bytecode
# SELFBALANCE opcode is 0x47
assert "47" not in byzantium_bytecode
assert "47" in istanbul_bytecode
def test_import_parent_folder(tmp_path, assert_compile_failed):
tmp_path.joinpath('contracts').mkdir()
foo_path = tmp_path.joinpath('contracts/foo.vy')
with foo_path.open('w') as fp:
fp.write(FOO_CODE.format("from .. import Bar"))
with tmp_path.joinpath('Bar.vy').open('w') as fp:
fp.write(BAR_CODE)
assert compile_files([foo_path], ['combined_json'], root_folder=tmp_path)
# Cannot perform relative import outside of base folder
with pytest.raises(FileNotFoundError):
compile_files([foo_path], ['combined_json'], root_folder=tmp_path.joinpath('contracts'))
def test_local_namespace(tmp_path):
# interface code namespaces should be isolated
# all of these contract should be able to compile together
codes = [
"import foo as FooBar",
"import bar as FooBar",
"import foo as BarFoo",
"import bar as BarFoo",
]
struct_def = """
struct FooStruct:
foo_: uint256
"""
compile_paths = []
for i, code in enumerate(codes):
code += struct_def
path = tmp_path.joinpath(f"code{i}.vy")
with path.open("w") as fp:
fp.write(code)
compile_paths.append(path)
for file_name in ("foo.vy", "bar.vy"):
with tmp_path.joinpath(file_name).open("w") as fp:
fp.write(BAR_CODE)
assert compile_files(compile_paths, ["combined_json"], root_folder=tmp_path)
def test_derived_interface_imports(import_stmt_baz, import_stmt_foo, tmp_path):
# contracts-as-interfaces should be able to contain import statements
baz_code = """
{}
@public
def foo(a: address) -> uint256:
return Foo(a).foo()
@public
def bar(_foo: address, _bar: address) -> uint256:
return Foo(_foo).bar(_bar)
""".format(import_stmt_baz)
with tmp_path.joinpath('Foo.vy').open('w') as fp:
fp.write(FOO_CODE.format(import_stmt_foo))
with tmp_path.joinpath('Bar.vy').open('w') as fp:
fp.write(BAR_CODE)
baz_path = tmp_path.joinpath('Baz.vy')
with baz_path.open('w') as fp:
fp.write(baz_code)
assert compile_files([baz_path], ['combined_json'], root_folder=tmp_path)
def test_derived_interface_imports(import_stmt_baz, import_stmt_foo, tmp_path):
# contracts-as-interfaces should be able to contain import statements
baz_code = f"""
{import_stmt_baz}
struct FooStruct:
foo_: uint256
@external
def foo(a: address) -> FooStruct:
return Foo(a).foo()
@external
def bar(_foo: address, _bar: address) -> FooStruct:
return Foo(_foo).bar(_bar)
"""
with tmp_path.joinpath("Foo.vy").open("w") as fp:
fp.write(FOO_CODE.format(import_stmt_foo, "Bar"))
with tmp_path.joinpath("Bar.vy").open("w") as fp:
fp.write(BAR_CODE)
baz_path = tmp_path.joinpath("Baz.vy")
with baz_path.open("w") as fp:
fp.write(baz_code)
assert compile_files([baz_path], ["combined_json"], root_folder=tmp_path)
def create_contract(w3, path):
wd = os.path.dirname(os.path.realpath(__file__))
with open(os.path.join(wd, os.pardir, path)) as f:
source = f.read()
root_path = os.path.join(wd, os.pardir)
source_path = os.path.join(root_path, path)
out = compile_files([source_path], ['abi', 'bytecode'], root_path)[path]
return w3.eth.contract(abi=out['abi'], bytecode=out['bytecode'])
def test_compile_outside_root_path(tmp_path):
foo_path = tmp_path.joinpath('foo.vy')
with foo_path.open('w') as fp:
fp.write(FOO_CODE.format('import bar as Bar'))
bar_path = tmp_path.joinpath('bar.vy')
with bar_path.open('w') as fp:
fp.write(BAR_CODE)
assert compile_files([foo_path, bar_path], ['combined_json'], root_folder=".")
def test_compile_outside_root_path(tmp_path):
foo_path = tmp_path.joinpath("foo.vy")
with foo_path.open("w") as fp:
fp.write(FOO_CODE.format("import bar as Bar", "Bar"))
bar_path = tmp_path.joinpath("bar.vy")
with bar_path.open("w") as fp:
fp.write(BAR_CODE)
assert compile_files([foo_path, bar_path], ["combined_json"], root_folder=".")
def test_import_same_folder(import_stmt, alias, tmp_path):
tmp_path.joinpath("contracts").mkdir()
foo_path = tmp_path.joinpath("contracts/foo.vy")
with foo_path.open("w") as fp:
fp.write(FOO_CODE.format(import_stmt, alias))
with tmp_path.joinpath("contracts/Bar.vy").open("w") as fp:
fp.write(BAR_CODE)
assert compile_files([foo_path], ["combined_json"], root_folder=tmp_path)
def test_import_same_folder(import_stmt, tmp_path):
tmp_path.joinpath('contracts').mkdir()
foo_path = tmp_path.joinpath('contracts/foo.vy')
with foo_path.open('w') as fp:
fp.write(FOO_CODE.format(import_stmt))
with tmp_path.joinpath('contracts/Bar.vy').open('w') as fp:
fp.write(BAR_CODE)
assert compile_files([foo_path], ['combined_json'], root_folder=tmp_path)
def test_combined_json_keys(tmp_path):
bar_path = tmp_path.joinpath('bar.vy')
with bar_path.open('w') as fp:
fp.write("")
combined_keys = {
'bytecode', 'bytecode_runtime', 'abi', 'source_map',
'method_identifiers'
}
compile_data = compile_files([bar_path], ['combined_json'],
root_folder=tmp_path)
assert set(compile_data.keys()) == {'bar.vy', 'version'}
assert set(compile_data['bar.vy'].keys()) == combined_keys
def test_combined_json_keys(tmp_path):
bar_path = tmp_path.joinpath("bar.vy")
with bar_path.open("w") as fp:
fp.write("")
combined_keys = {
"bytecode",
"bytecode_runtime",
"abi",
"source_map",
"method_identifiers",
"userdoc",
"devdoc",
}
compile_data = compile_files([bar_path], ["combined_json"],
root_folder=tmp_path)
assert set(compile_data.keys()) == {"bar.vy", "version"}
assert set(compile_data["bar.vy"].keys()) == combined_keys
def test_import_self_interface(import_stmt, tmp_path):
# a contract can access it's derived interface by importing itself
code = """
{}
@public
def know_thyself(a: address) -> uint256:
return Meta(a).be_known()
@public
def be_known() -> uint256:
return 42
""".format(import_stmt)
tmp_path.joinpath('contracts').mkdir()
meta_path = tmp_path.joinpath('contracts/Meta.vy')
with meta_path.open('w') as fp:
fp.write(code)
assert compile_files([meta_path], ['combined_json'], root_folder=tmp_path)
def test_import_self_interface(import_stmt, tmp_path):
# a contract can access it's derived interface by importing itself
code = f"""
{import_stmt}
@external
def know_thyself(a: address) -> uint256:
return Meta(a).be_known()
@external
def be_known() -> uint256:
return 42
"""
tmp_path.joinpath("contracts").mkdir()
meta_path = tmp_path.joinpath("contracts/Meta.vy")
with meta_path.open("w") as fp:
fp.write(code)
assert compile_files([meta_path], ["combined_json"], root_folder=tmp_path)
def test_local_namespace(tmp_path):
# interface code namespaces should be isolated
# all of these contract should be able to compile together
codes = [
"import foo as FooBar",
"import bar as FooBar",
"import foo as BarFoo",
"import bar as BarFoo",
]
compile_paths = []
for i, code in enumerate(codes):
path = tmp_path.joinpath(f'code{i}.vy')
with path.open('w') as fp:
fp.write(code)
compile_paths.append(path)
for file_name in ('foo.vy', 'bar.vy'):
with tmp_path.joinpath(file_name).open('w') as fp:
fp.write(BAR_CODE)
assert compile_files(compile_paths, ['combined_json'], root_folder=tmp_path)
def test_invalid_root_path():
with pytest.raises(FileNotFoundError):
compile_files([], [], root_folder="path/that/does/not/exist")
def compile(self):
# check what kind of contract we are compiling
if self.contract_filepath.endswith('.vy'):
contract_type = 'vyper'
else:
contract_type = 'solidity'
print(
f'Compiling {contract_type.title()} contract {self.name} from {self.contract_filepath}'
)
contract_filename = os.path.basename(self.contract_filepath)
# load the contract source code from file
with open(self.contract_filepath, 'r') as f:
contract_content = f.read()
if contract_type == 'solidity':
from solc import compile_standard
# compile the contract source code
compiled_sol = compile_standard({
"language": "Solidity",
"sources": {
contract_filename: {
"content": contract_content
}
},
"settings": {
"outputSelection": {
"*": {
"*": [
"metadata", "evm.bytecode",
"evm.bytecode.sourceMap"
]
}
}
}
})
# the contract ABI, used by web3 to interact with the contract
self.abi = json.loads(compiled_sol['contracts'][contract_filename][
self.name]['metadata'])['output']['abi']
# the compiled bytecode, used for deploying the contract
self.bytecode = compiled_sol['contracts'][contract_filename][
self.name]['evm']['bytecode']['object']
if contract_type == 'vyper':
from vyper.cli.vyper_compile import compile_files
output = compile_files(input_files=[self.contract_filepath],
output_formats=['abi', 'bytecode'])
self.abi = output[self.contract_filepath]['abi']
self.bytecode = output[self.contract_filepath]['bytecode']
# optionally save the ABI to file so that it can be re-used
if self.abi_filepath:
print(f'saving ABI to {self.abi_filepath}')
with open(self.abi_filepath, 'w') as f:
json.dump(self.abi, f)
# optionally save the bytecode to file so that it can be re-used
if self.bytecode_filepath:
print(f'saving bytecode to {self.bytecode_filepath}')
with open(self.bytecode_filepath, 'w') as f:
f.write(self.bytecode)