def as_expression(self, target=None):
_index = local('_index', 'Int')
name = self.temp_name(target or self.default)
z = local(name, pseudo_type=['List', self.args[-1].pseudo_type[2]])
z_arg = local('_value', z.pseudo_type[1])
return [
assignment(
z,
Node('_go_make_slice',
slice_type=z.pseudo_type,
length=call('len', [self.args[0]], 'Int'))),
Node(
'for_statement',
sequences=Node('for_sequence_with_index',
sequence=self.args[0]),
iterators=Node(
'for_iterator_with_index',
index=_index,
iterator=self.args[1].params[0]
if self.args[1].type == 'anonymous_function' else z_arg),
block=self.args[1].block[:-1] + [
assignment(
Node('index',
sequence=z,
index=_index,
pseudo_type=z.pseudo_type[1]),
self.args[1].block[-1].value)
] if self.args[1].type == 'anonymous_function' else assignment(
Node('index',
sequence=z,
index=_index,
pseudo_type=z.pseudo_type[1]),
call(self.args[1], z_arg, z.pseudo_type[1]))), z
], None
def as_expression(self, target=None):
_index = local('_index', 'Int')
name = self.temp_name(target or self.default)
z = local(name, pseudo_type=self.args[0].pseudo_type)
if self.args[1].type == 'anonymous_function':
block_test = self.args[1].block[-1].value
initial = self.args[1].block[:-1]
z_arg = self.args[1].params[0]
else:
z_arg = local('_value', z.pseudo_type[1])
block_test = call(self.args[1], z_arg, 'Boolean')
initial = []
return [
Node('_go_declaration', decl=name, decl_type=z.pseudo_type),
Node('for_statement',
sequences=Node('for_sequence_with_index',
sequence=self.args[0]),
iterators=Node('for_iterator_with_index',
index=_index,
iterator=z_arg),
block=initial + [
Node('if_statement',
test=block_test,
block=[
assignment(
z, call('append', [z, z_arg], z.pseudo_type))
],
otherwise=None)
]), z
], None
def as_expression(self, target=None):
_index = local('_index', 'Int')
name = self.temp_name(target or self.default)
z = local(name, pseudo_type=self.args[0].pseudo_type)
if self.args[1].type == 'anonymous_function':
block_test = self.args[1].block[-1].value
initial = self.args[1].block[:-1]
z_arg = self.args[1].params[0]
else:
z_arg = local('_value', z.pseudo_type[1])
block_test = call(self.args[1], z_arg, 'Boolean')
initial = []
return [Node('_go_declaration', decl=name, decl_type=z.pseudo_type),
Node('for_statement',
sequences=Node('for_sequence_with_index',
sequence=self.args[0]),
iterators=Node('for_iterator_with_index',
index=_index,
iterator=z_arg),
block=initial + [
Node('if_statement',
test=block_test,
block=[assignment(
z, call('append', [z, z_arg], z.pseudo_type))],
otherwise=None)]),
z], None
def _expand_api(self, api, receiver, args, pseudo_type, equivalent):
'''
the heart of api translation dsl
function or <z>(<arg>, ..) can be expanded, <z> can be just a name for a global function, or #name for method, <arg> can be %{self} for self or %{n} for nth arg
'''
if callable(api):
if receiver:
return api(receiver, *(args + [pseudo_type]))
else:
return api(*(args + [pseudo_type]))
elif isinstance(api, str):
if '(' in api:
call_api, arg_code = api[:-1].split('(')
new_args = [
self._parse_part(a.strip(), receiver, args, equivalent)
for a in arg_code.split(',')
]
else:
call_api, arg_code = api, ''
new_args = args
if '#' in call_api:
a, b = call_api.split('#')
method_receiver = self._parse_part(
a, receiver, args, equivalent) if a else receiver
return method_call(method_receiver,
b,
new_args,
pseudo_type=pseudo_type)
elif '.' in call_api:
a, b = call_api.split('.')
static_receiver = self._parse_part(
a, receiver, args, equivalent) if a else receiver
if b[-1] != '!':
return Node('static_call',
receiver=static_receiver,
message=b,
args=new_args,
pseudo_type=pseudo_type)
else:
return Node('attr',
object=static_receiver,
attr=b[:-1],
pseudo_type=pseudo_type)
else:
if receiver:
return call(call_api, [receiver] + new_args,
pseudo_type=pseudo_type)
else:
return call(call_api, new_args, pseudo_type=pseudo_type)
else:
raise PseudoDSLError('%s not supported by api dsl' % str(api))
def as_expression(self):
return [
Node('_go_multi_assignment',
targets=[local('reader', 'Reader'), local('err', 'Error')],
values=[call(attr(local('bufio', 'GoLibrary'),
'NewReader', ['Function', 'IO', 'Reader']),
[attr(local('os', 'GoLibrary'), 'Stdin', 'IO')],
pseudo_type='Reader')]),
call(
attr(local('reader', 'Reader'),
'ReadString',
['Function', 'String', 'String']),
[to_node('\\n')],
pseudo_type='String')], None
def as_expression(self):
return [
Node('_go_multi_assignment',
targets=[local('reader', 'Reader'),
local('err', 'Error')],
values=[
call(attr(local('bufio', 'GoLibrary'), 'NewReader',
['Function', 'IO', 'Reader']),
[attr(local('os', 'GoLibrary'), 'Stdin', 'IO')],
pseudo_type='Reader')
]),
call(attr(local('reader', 'Reader'), 'ReadString',
['Function', 'String', 'String']), [to_node('\\n')],
pseudo_type='String')
], None
def as_expression(self):
return [], Node(
'_py_with',
call=call('open', [self.args[0], to_node('w')], 'File'),
context='_f',
block=[method_call(local('_f', 'File'), 'write', [self.args[1]], 'Void')],
pseudo_type='Void')
def as_expression(self):
return [Node(
'_py_with',
call=call('open', [self.args[0], to_node('r')], 'File'),
context='_f',
block=[method_call(local('_f', 'File'), 'read', [], 'String')],
pseudo_type='Void')], None
def expand_map(receiver, func):
if func.type == 'lambda':
return Node(
'_py_list_comp',
sequence=receiver)
else:
return call('map', [func, receiver])
def display(*values):
if all(isinstance(v.pseudo_type, str) for v in values[:-1]):
name = 'puts'
else:
name = 'p'
return call(name, values[:-1], 'Void')
def as_expression(self, target=None):
t = self.temp_name(target or 'accumulator')
if self.args[1].type == 'anonymous_function':
initial = self.args[1].block[:-1]
element = self.args[1].params[1]
if target is None:
target = self.args[1].params[0]
elif target.name != self.args[1].params[0].name:
self.args[1].block = ReduceRewriter(
self.args[1].params[0].name,
target.name).transform(self.args[1].block)
self.args[1].params[0] = target
block_result = self.args[1].block[-1].value
else:
initial = []
element = local('_element', self.args[0].pseudo_type[1])
if target is None:
target = local(t, self.args[1].pseudo_type[-1])
block_result = call(self.args[1], [element, target],
target.pseudo_type)
return [
assignment(target, self.args[2]),
Node('for_statement',
sequences=Node('for_sequence', sequence=self.args[0]),
iterators=Node('for_iterator', iterator=element),
block=initial + [assignment(target, block_result)]), target
], None
def display(*values):
if all(isinstance(v.pseudo_type, str) for v in values[:-1]):
name = 'puts'
else:
name = 'p'
return call(name, values[:-1], 'Void')
def as_expression(self, target=None):
t = self.temp_name(target or 'accumulator')
if self.args[1].type == 'anonymous_function':
initial = self.args[1].block[:-1]
element = self.args[1].params[1]
if target is None:
target = self.args[1].params[0]
elif target.name != self.args[1].params[0].name:
self.args[1].block = ReduceRewriter(self.args[1].params[0].name, target.name).transform(self.args[1].block)
self.args[1].params[0] = target
block_result = self.args[1].block[-1].value
else:
initial = []
element = local('_element', self.args[0].pseudo_type[1])
if target is None:
target = local(t, self.args[1].pseudo_type[-1])
block_result = call(self.args[1], [element, target], target.pseudo_type)
return [assignment(target, self.args[2]),
Node('for_statement',
sequences=Node('for_sequence',
sequence=self.args[0]),
iterators=Node('for_iterator',
iterator=element),
block=initial + [
assignment(target, block_result)
]),
target], None
def expand_slice(receiver, from_=None, to=None, pseudo_type=None):
if from_:
if pseudo_type: #to
if from_.type == 'int' and from_.value == 0:
return Node('_go_slice_to',
sequence=receiver,
to=to,
pseudo_type=pseudo_type)
else:
if from_.type == 'int' and from_.value < 0:
from_ = Node('binary_op',
op='-',
left=call('len', [receiver], 'Int'),
right=to_node(-from_.value),
pseudo_type='Int')
if to.type == 'int' and to.value < 0:
to = Node('binary_op',
op='-',
left=call('len', [receiver], 'Int'),
right=to_node(-to.value),
pseudo_type='Int')
return Node('_go_slice',
sequence=receiver,
from_=from_,
to=to,
pseudo_type=pseudo_type)
else:
pseudo_type = to
return Node('_go_slice_from',
sequence=receiver,
from_=from_,
pseudo_type=pseudo_type)
elif to:
if to.type == 'int' and to.value < 0:
to = Node('binary_op',
op='-',
left=call('len', [receiver], 'Int'),
right=to_node(-to.value),
pseudo_type='Int')
return Node('_go_slice_to',
sequence=receiver,
to=to,
pseudo_type=pseudo_type)
else:
return None
def as_expression(self):
return [
Node(
'_py_with',
call=call('open', [self.args[0], to_node('r')], 'File'),
context='_f',
block=[method_call(local('_f', 'File'), 'read', [], 'String')],
pseudo_type='Void')
], None
def as_expression(self):
return [], Node('_py_with',
call=call('open',
[self.args[0], to_node('w')], 'File'),
context='_f',
block=[
method_call(local('_f', 'File'), 'write',
[self.args[1]], 'Void')
],
pseudo_type='Void')
def as_expression(self):
l = local(self.temp_name(''), 'String')
return [Node('_go_multi_assignment',
targets=[l, local('_', 'Error')],
values=[Node('static_call',
message='ReadFile',
receiver=local('ioutil', 'Library'),
args=self.args,
pseudo_type='MaybeBytez')]),
call('string', [l], 'String')], None
def x(receiver, test, pseudo_type):
return call(
local(method, ['Function', test.pseudo_type, 'Boolean']),
[Node('_py_generatorcomp',
sequences=Node('for_sequence', sequence=receiver),
iterators=Node('for_iterator', iterator=local(test.params[0].name, test.pseudo_type[1])),
block=test.block[0].value,
test=None,
pseudo_type=['PyGenerator', 'Boolean'])],
pseudo_type='Boolean')
def expand_slice(receiver, from_=None, to=None, pseudo_type=None):
if from_:
if pseudo_type: #to
if from_.type == 'int' and from_.value == 0:
return Node('_go_slice_to', sequence=receiver, to=to, pseudo_type=pseudo_type)
else:
if from_.type == 'int' and from_.value < 0:
from_ = Node('binary_op', op='-', left=call('len', [receiver], 'Int'), right=to_node(-from_.value), pseudo_type='Int')
if to.type == 'int' and to.value < 0:
to = Node('binary_op', op='-', left=call('len', [receiver], 'Int'), right=to_node(-to.value), pseudo_type='Int')
return Node('_go_slice', sequence=receiver, from_=from_, to=to, pseudo_type=pseudo_type)
else:
pseudo_type = to
return Node('_go_slice_from', sequence=receiver, from_=from_, pseudo_type=pseudo_type)
elif to:
if to.type == 'int' and to.value < 0:
to = Node('binary_op', op='-', left=call('len', [receiver], 'Int'), right=to_node(-to.value), pseudo_type='Int')
return Node('_go_slice_to', sequence=receiver, to=to, pseudo_type=pseudo_type)
else:
return None
def x(receiver, test, pseudo_type):
return call(local(method, ['Function', test.pseudo_type, 'Boolean']), [
Node('_py_generatorcomp',
sequences=Node('for_sequence', sequence=receiver),
iterators=Node('for_iterator',
iterator=local(test.params[0].name,
test.pseudo_type[1])),
block=test.block[0].value,
test=None,
pseudo_type=['PyGenerator', 'Boolean'])
],
pseudo_type='Boolean')
def _expand_api(self, api, receiver, args, pseudo_type, equivalent):
'''
the heart of api translation dsl
function or <z>(<arg>, ..) can be expanded, <z> can be just a name for a global function, or #name for method, <arg> can be %{self} for self or %{n} for nth arg
'''
if callable(api):
if receiver:
return api(receiver, *(args + [pseudo_type]))
else:
return api(*(args + [pseudo_type]))
elif isinstance(api, str):
if '(' in api:
call_api, arg_code = api[:-1].split('(')
new_args = [self._parse_part(
a.strip(), receiver, args, equivalent) for a in arg_code.split(',')]
else:
call_api, arg_code = api, ''
new_args = args
if '#' in call_api:
a, b = call_api.split('#')
method_receiver = self._parse_part(
a, receiver, args, equivalent) if a else receiver
return method_call(method_receiver, b, new_args, pseudo_type=pseudo_type)
elif '.' in call_api:
a, b = call_api.split('.')
static_receiver = self._parse_part(
a, receiver, args, equivalent) if a else receiver
if b[-1] != '!':
return Node('static_call', receiver=static_receiver, message=b, args=new_args, pseudo_type=pseudo_type)
else:
return Node('attr', object=static_receiver, attr=b[:-1], pseudo_type=pseudo_type)
else:
if receiver:
return call(call_api, [receiver] + new_args, pseudo_type=pseudo_type)
else:
return call(call_api, new_args, pseudo_type=pseudo_type)
else:
raise PseudoDSLError('%s not supported by api dsl' % str(api))
def as_expression(self):
l = local(self.temp_name(''), 'String')
return [
Node('_go_multi_assignment',
targets=[l, local('_', 'Error')],
values=[
Node('static_call',
message='ReadFile',
receiver=local('ioutil', 'Library'),
args=self.args,
pseudo_type='MaybeBytez')
]),
call('string', [l], 'String')
], None
def as_expression(self):
e = self.temp_name('')
e_singular = self.singular_name()
e_index = self.index()
if self.field == 'keys':
field_type = self.args[0].pseudo_type[1]
first = local(e_singular, field_type)
second = local('_', self.args[0].pseudo_type[2])
else:
field_type = self.args[0].pseudo_type[2]
first = local('_', self.args[0].pseudo_type[1])
second = local(e_singular, field_type)
e = local(e, field_type)
e_singular = local(e_singular, field_type)
return [
assignment(
e,
Node('_go_make_slice',
slice_type=['List', field_type],
length=call('len', [self.args[0]], 'Int'),
pseudo_type=['List', field_type])),
assignment(e_index, to_node(0)),
Node('for_statement',
sequences=Node('for_sequence_with_items',
sequence=self.args[0]),
iterators=Node('for_iterator_with_items',
key=first,
value=second),
block=[
assignment(
Node('index',
sequence=e,
index=e_index,
pseudo_type=field_type), e_singular),
Node('aug_assignment',
op='+',
target=e_index,
value=to_node(1))
]), e
], None
def as_assignment(self, target):
e = self.as_expression()[0]
e[3] = assignment(target, e)
return e
def as_expression(self, target=None):
_index = local('_index', 'Int')
name = self.temp_name(target or self.default)
z = local(name, pseudo_type=['List', self.args[-1].pseudo_type[2]])
z_arg = local('_value', z.pseudo_type[1])
return [assignment(z, Node('_go_make_slice', slice_type=z.pseudo_type, length=call('len', [self.args[0]], 'Int'))),
Node('for_statement',
sequences=Node('for_sequence_with_index',
sequence=self.args[0]),
iterators=Node('for_iterator_with_index',
index=_index,
iterator=self.args[1].params[0] if self.args[1].type == 'anonymous_function' else z_arg),
block=self.args[1].block[:-1] + [
assignment(Node('index', sequence=z, index=_index, pseudo_type=z.pseudo_type[1]),
self.args[1].block[-1].value)] if self.args[1].type == 'anonymous_function' else
assignment(Node('index', sequence=z, index=_index, pseudo_type=z.pseudo_type[1]),
call(self.args[1], z_arg, z.pseudo_type[1]))),
z], None
def expand_insert(receiver, index, element):
return call('append', [])
target=Node('instance_variable', name='egg', pseudo_type='Int'),
value=local('ham', pseudo_type='Int')),
Node('assignment',
target=Node('attr',
object=Node('typename', name='T'),
attr='egg',
pseudo_type='String'),
value=local('ham', pseudo_type='String')),
Node('assignment',
target=Node('index',
sequence=local('x', pseudo_type=['List', 'String']),
index=to_node(4),
pseudo_type='String'),
value=to_node('String'))
]
Call = [call('map', [local('x')])]
MethodCall = [method_call(local('e', 'E'), 'filter', [to_node(42)])]
StandardCall = [
Node('standard_call',
namespace='io',
function='display',
args=[to_node(42)],
pseudo_type='Void'),
Node('standard_call',
namespace='io',
function='read',
args=[],
pseudo_type='String'),
Node('standard_call',
namespace='math',
function='ln',
def expand_insert(receiver, index, element):
return call('append', [])
def expand_push(receiver, element):
return Node('assignment',
target=receiver,
value=call('append', [receiver, element]))
def expand_filter(receiver, func):
if func.type == 'lambda':
return Node(
'_py_list_comp')
else:
return call('filter', [func, receiver])
def present(s, _):
return Node('binary_op',
op='>',
left=call('len', [s], 'Int'),
right=to_node(0),
pseudo_type='Boolean')
def present(s, _):
return Node('binary_op',
op='>',
left=call('len', [s], 'Int'),
right=to_node(0),
pseudo_type='Boolean')
def as_expression(self):
e = self.temp_name('')
e_singular = self.singular_name()
e_index = self.index()
if self.field == 'keys':
field_type = self.args[0].pseudo_type[1]
first = local(e_singular, field_type)
second = local('_', self.args[0].pseudo_type[2])
else:
field_type = self.args[0].pseudo_type[2]
first = local('_', self.args[0].pseudo_type[1])
second = local(e_singular, field_type)
e = local(e, field_type)
e_singular = local(e_singular, field_type)
return [assignment(e, Node('_go_make_slice', slice_type=['List', field_type], length=call('len', [self.args[0]], 'Int'), pseudo_type=['List', field_type])),
assignment(e_index, to_node(0)),
Node('for_statement',
sequences=Node('for_sequence_with_items',
sequence=self.args[0]),
iterators=Node('for_iterator_with_items',
key=first,
value=second),
block=[
assignment(
Node('index', sequence=e, index=e_index, pseudo_type=field_type),
e_singular),
Node('aug_assignment', op='+', target=e_index, value=to_node(1))]),
e], None
def as_assignment(self, target):
e = self.as_expression()[0]
e[3] = assignment(target, e)
return e
def expand_push(receiver, element):
return Node(
'assignment',
target=receiver,
value=call('append', [receiver, element]))
class PythonTranslator(ApiTranslator):
'''
Python api translator
The DSL is explained in the ApiTranslator docstring
'''
methods = {
'List': {
'@equivalent':
'list',
'push':
'#append',
'pop':
'#pop',
'length':
'len',
'insert':
'#insert',
'remove_at':
lambda receiver, index, _: Node(
'_py_del',
value=Node('index', sequence=receiver, index=index),
pseudo_type='Void'),
'remove':
'#remove',
'slice':
expand_slice,
'slice_from':
expand_slice,
'slice_to':
lambda receiver, to, pseudo_type: expand_slice(
receiver, None, to, pseudo_type),
'repeat':
to_op('*'),
'set_slice':
expand_set_slice,
'set_slice_from':
expand_set_slice,
'set_slice_to':
lambda receiver, to, value, pseudo_type: expand_set_slice(
receiver, None, to, value, pseudo_type),
'find':
'#index',
'join':
lambda receiver, delimiter, _: method_call(
delimiter, 'join', [receiver], pseudo_type='String'),
# map and filter have implicit or explicit return because otherwise they wouldnt type check
'map':
lambda receiver, f, pseudo_type: Node(
'_py_listcomp',
sequences=Node('for_sequence', sequence=receiver),
iterators=Node('for_iterator',
iterator=local(f.params[0].name, f.pseudo_type[
1])),
block=f.block[0].value,
test=None,
pseudo_type=['List', f.pseudo_type[2]]),
'filter':
lambda receiver, test, pseudo_type: Node(
'_py_listcomp',
sequences=Node('for_sequence', sequence=receiver),
iterators=Node('for_iterator',
iterator=local(test.params[0].name, test.
pseudo_type[1])),
block=local(test.params[0].name, test.pseudo_type[1]),
test=test.block[0].value,
pseudo_type=['List', test.pseudo_type[1]]),
'reduce':
lambda receiver, aggregator, initial, pseudo_type: Node(
'static_call',
receiver=local('functools', 'Library'),
message='reduce',
args=[aggregator, receiver, initial],
pseudo_type=pseudo_type),
'any?':
to_py_generatorcomp('any'),
'all?':
to_py_generatorcomp('all'),
'sort':
'#sort',
'present?':
lambda receiver, _: receiver,
'empty?':
lambda receiver, _: Node(
'unary_op', op='not', value=receiver, pseudo_type='Boolean'),
'contains?':
contains
},
'Dictionary': {
'@equivalent':
'dict',
'length':
'len',
'keys':
'#keys',
'values':
'#values',
'contains?':
contains,
'keys':
lambda receiver, pseudo_type: call(local(
'list', ['Function', 'Any', 'List']), [
method_call(receiver, 'keys', [],
['dict_keys', pseudo_type[1]])
],
pseudo_type=pseudo_type),
'values':
lambda receiver, pseudo_type: call(local(
'list', ['Function', 'Any', 'List']), [
method_call(receiver, 'values', [],
['dict_values', pseudo_type[1]])
],
pseudo_type=pseudo_type),
'present?':
lambda receiver, _: receiver,
'empty?':
lambda receiver, _: Node(
'unary_op', op='not', value=receiver, pseudo_type='Boolean')
},
'String': {
'@equivalent':
'str',
'substr':
expand_slice,
'substr_from':
expand_slice,
'length':
'len',
'substr_to':
lambda receiver, to, _: expand_slice(receiver, None, to, 'String'),
'find':
'#index',
'find_from':
'#index',
'count':
'#count',
'partition':
'#partition',
'split':
'#split',
'trim':
'#strip',
'format':
'#format',
'concat':
to_op('+'),
'c_format':
to_op('%'),
'center':
'#center',
'reversed':
'reversed',
'empty?':
lambda receiver, _: Node(
'unary_op', op='not', value=receiver, pseudo_type='Boolean'),
'present?':
lambda receiver, _: receiver,
'contains?':
lambda receiver, element, _: Node('_py_in',
sequence=receiver,
value=element,
pseudo_type='Boolean'),
'to_int':
'int',
'pad_left':
'#ljust',
'pad_right':
'#rjust'
},
'Int': {
'to_float': 'float(%{self})'
},
'Float': {
'to_int': 'int(%{self})'
},
'Set': {
'@equivalent':
'set',
'length':
'len',
'contains?':
contains,
'union':
to_op('|'),
'intersection':
to_op('-'),
'present?':
lambda receiver, _: receiver,
'empty?':
lambda receiver, _: Node(
'unary_op', op='not', value=receiver, pseudo_type='Boolean')
},
'Tuple': {
'@equivalent': 'tuple',
'length': 'len'
},
'Array': {
'@equivalent': 'tuple',
'length': 'len'
},
'Regexp': {
'@equivalent': '_sre.SRE_Pattern',
'match': '#match'
},
'RegexpMatch': {
'@equivalent': '_sre.SRE_Match',
'group': '#group',
'has_match': lambda receiver, _: receiver
}
}
functions = {
'global': {
'wat': lambda _: Node('block', block=[]),
'exit': lambda status, _: call('exit', [status])
},
'io': {
'display': 'print',
'read': 'input',
'write_file': WriteFile,
'read_file': ReadFile
},
'system': {
'args':
'sys.argv!',
'arg_count':
lambda _: call('len', [
attr(local('sys', 'Library'), 'argv', ['List', 'String'])
], 'Int'),
'index':
lambda value, _: Node('index',
sequence=attr(local('sys', 'Library'),
'argv', ['List', 'String']),
index=value,
pseudo_type='String')
},
'http': {
'get': 'requests.get',
'post': 'requests.post',
},
'math': {
'ln':
'math.log',
'log':
'math.log',
'tan':
'math.tan',
'sin':
'math.sin',
'cos':
'math.cos',
'pow':
lambda left, right, pseudo_type: Node('binary_op',
op='**',
left=left,
right=right,
pseudo_type=pseudo_type)
},
'regexp': {
'compile': 're.compile',
'escape': 're.escape'
}
}
dependencies = {
'Regexp': {
'@all': 're'
},
'List': {
'reduce': 'functools'
},
'http': {
'@all': 'requests'
},
'math': {
'@all': 'math'
},
'regexp': {
'@all': 're'
},
'system': {
'@all': 'sys'
}
}
class GolangTranslator(ApiTranslator):
'''
Go api translator
The DSL is explained in the ApiTranslator docstring
'''
methods = {
'List': {
'@equivalent':
'slice',
'push':
lambda receiver, element, _: assignment(
receiver,
call('append', [receiver, element], receiver.pseudo_type)),
'pop':
lambda receiver, _: assignment(
receiver,
Node('_go_slice_to',
sequence=receiver,
to=Node('binary_op',
op='-',
left=call('len', [receiver], 'Int'),
right=to_node(1),
pseudo_type='Int'),
pseudo_type=receiver.pseudo_type)),
'length':
'len',
'insert':
expand_insert,
'slice':
expand_slice,
'slice_from':
expand_slice,
'slice_to':
lambda receiver, to, pseudo_type: expand_slice(
receiver, None, to, pseudo_type),
'join':
'strings.Join(%{self}, %{0})',
'map':
expand_map,
'filter':
expand_filter,
'find':
Find,
'reduce':
expand_reduce,
'contains?':
ListContains,
'present?':
present,
'empty?':
empty
},
'Dictionary': {
'@equivalent': 'map',
'length': 'len',
'contains?': Contains,
'keys': DictKeys,
'values': DictValues,
'present?': present,
'empty?': empty
},
'String': {
'@equivalent':
'str',
'substr':
expand_slice,
'substr_from':
expand_slice,
'length':
'len',
'substr_to':
lambda receiver, to, _: expand_slice(
receiver, None, to, pseudo_type='String'),
'find':
'strings.Index(%{self}, %{0})',
'count':
'strings.Count(%{self}, %{0})',
'split':
'strings.Split(%{self}, %{0})',
'concat':
to_op('+'),
'contains?':
'strings.Contains(%{self}, %{0})',
'present?':
present,
'empty?':
empty,
'find_from':
lambda f, value, index, _: Node(
'binary_op',
op='+',
pseudo_type='Int',
left=index,
right=Node('static_call',
receiver=local('strings', 'Library'),
message='Index',
args=[
Node('_go_slice_from',
sequence=f,
from_=index,
pseudo_type='String'), value
],
pseudo_type='Int')),
'to_int':
Int
},
'Regexp': {
'@equivalent':
'Regexp',
'match':
lambda receiver, word, _: method_call(
receiver,
'FindAllSubmatch', [
Node('_go_bytes', value=word, pseudo_type='Bytes'),
to_node(-1)
],
pseudo_type='RegexpMatch')
},
'RegexpMatch': {
'@equivalent':
'R',
'group':
lambda receiver, index, _: Node('index',
sequence=receiver,
index=Node('binary_op',
op='+',
left=index,
right=to_node(1),
pseudo_type='Int'),
pseudo_type='String'),
'has_match':
lambda receiver, _: Node('comparison',
op='!=',
left=receiver,
right=Node('null', pseudo_type='None'),
pseudo_type='Boolean')
},
'Set': {
'@equivalent': 'map[bool]struct{}',
'length': 'len',
'contains?': Contains,
'present?': present,
'empty?': empty
},
'Tuple': {
'@equivalent': 'L',
'length':
lambda receiver, _: to_node(len(receiver.pseudo_type) - 1)
},
'Array': {
'@equivalent': 'int[]',
'length': lambda receiver, _: to_node(receiver.pseudo_type[2])
}
}
functions = {
'regexp': {
'compile': 'regexp.MustCompile',
'escape': 'regexp.QuoteMeta'
},
'io': {
'display': 'fmt.Println',
'read': Read,
'read_file': ReadFile,
'write_file': 'ioutil.WriteFile'
},
'math': {
'ln': 'math.Log',
'log': 'math.Log',
'tan': 'math.Tan',
'sin': 'math.Sin',
'cos': 'math.Cos',
'pow': 'math.Pow'
},
'system': {
'args':
'os.Args!',
'arg_count':
lambda _: call('len', [
attr(local('os', 'Library'), 'Args', ['List', 'String'])
], 'Int'),
'index':
lambda value, _: Node('index',
sequence=attr(local('os', 'Library'), 'Args',
['List', 'String']),
index=value,
pseudo_type='String')
}
}
dependencies = {
'regexp': {
'@all': 'regexp'
},
'io': {
'display': 'fmt',
'read': ['bufio', 'os'],
'read_file': ['io/ioutil'],
'write_file': ['io/ioutil']
},
'math': {
'@all': 'math'
},
'List': {
'join': 'strings'
},
'String': {
'find': 'strings',
'count': 'strings',
'split': 'strings',
'contains?': 'strings',
'find_from': 'strings',
'to_int': 'strconv'
},
'system': {
'@all': 'os'
}
}
errors = {}
class JSTranslator(ApiTranslator):
'''
JS api translator
The DSL is explained in the ApiTranslator docstring
'''
methods = {
'List': {
'@equivalent':
'Array',
'push':
'#push',
'pop':
'#pop',
'length':
'.length!',
'insert':
'#splice(%{self}, 0, %{0})',
'remove_at':
lambda receiver, index, _: method_call(
receiver,
'splice', [
index,
to_node(index.value + 1)
if index.type == 'int' else Node('binary_op',
op='+',
left=index,
right=to_node(1),
pseudo_type='Int')
],
pseudo_type='Void'),
'remove':
'_.pull(%{self}, %{0})',
'slice':
'#slice',
'slice_from':
'#slice',
'slice_to':
'#slice(0, %{0})',
'map':
'_.map(%{self}, %{0})',
'filter':
'_.filter(%{self}, %{0})',
'reduce':
'_.reduce(%{self}, %{0}, %{1})',
'any?':
'_.any(%{self}, %{0})',
'all?':
'_.all(%{self}, %{0})',
'sort':
'#sort',
'empty?':
empty,
'present?':
present,
'find':
'#indexOf',
'contains?':
'_.contains(%{self}, %{0})'
},
'Dictionary': {
'@equivalent': 'Object',
'length': object_len,
'keys': 'Object.keys(%{self})',
'values': 'Object.values(%{self})',
'contains?': '#hasOwnProperty',
'present?': present,
'empty?': empty
},
'String': {
'@equivalent':
'String',
'substr':
'#slice',
'substr_from':
'#slice',
'length':
'.length!',
'substr_to':
'#slice(0, %{0})',
'find':
'#search',
'find_from':
lambda f, value, index, _: Node(
'binary_op',
op='+',
pseudo_type='Int',
left=index,
right=method_call(method_call(f, 'slice', [index], 'String'),
'search', [value], 'Int')),
'count':
lambda f, count, _: attr(
method_call(LODASH, 'where', [count], ['List', 'String']),
'length', 'Int'),
'concat':
to_op('+'),
'partition':
lambda f, delimiter, _: Node(
'index',
sequence=method_call(LODASH, 'partition', [delimiter], 'String'
),
index=to_node(1),
pseudo_type=['Tuple', 'String', 'String', 'String']),
'split':
'#split',
'trim':
'#trim',
'reversed':
lambda f, _: method_call(
method_call(
method_call(f, 'split', [to_node('')], ['List', 'String']),
'reverse', [], ['List', 'String']), 'join', [to_node('')],
'String'),
'center':
'_.pad(%{self}, %{0}, %{1})',
'present?':
lambda f, _: f,
'empty?':
lambda f, _: Node(
'unary_op', op='not', value=f, pseudo_type='Boolean'),
'contains?':
'_.contains(%{self}, %{0})',
'to_int':
'parseInt',
'pad_left':
'_.padLeft(%{self}, %{0}, %{1})',
'pad_right':
'_.padRight(%{self}, %{0}, %{1})'
},
'Tuple': {
'@equivalent': 'Array',
'length': '.length!'
},
'Array': {
'@equivalent': 'Array',
'length': '.length!'
},
'Set': {
'@equivalent': 'Object',
'length': object_len,
'contains?': '_.contains(%{self}, %{0})',
'intersection': '_.intersection(%{self}, %{0})',
'union': '_.union(%{self}, %{0})',
'present?': present,
'empty?': empty
},
'RegexpMatch': {
'@equivalent':
'Array',
'group':
lambda receiver, index, _: Node('index',
sequence=receiver,
index=to_node(1 + index.value)
if index.type == 'int' else Node(
'binary_op',
op='+',
left=to_node(1),
right=index,
pseudo_type='Int'),
pseudo_type='String'),
'has_match':
lambda receiver, _: receiver
},
'Regexp': {
'@equivalent': 'Regexp',
'match': '#exec'
}
}
functions = {
'global': {
'wat': lambda _: Node('block', block=[]),
'exit': lambda status, _: call('exit', [status])
},
'system': {
'args':
'process.argv!',
'arg_count':
lambda _: Node('binary_op',
op='-',
left=attr(
attr(local('process', 'Library'), 'argv',
['List', 'String']), 'length', 'Int'),
right=to_node(1),
pseudo_type='Int'),
'index':
lambda value, _: Node('index',
sequence=attr(local('process', 'Library'),
'argv', ['List', 'String']),
index=to_node(value.value + 1) if value.type
== 'int' else Node('binary_op',
op='+',
left=value,
right=value,
pseudo_type='Int'),
pseudo_type='String')
},
'io': {
'display': 'console.log',
'read_file': "fs.readFileSync(%{0}, 'utf8')",
'write_file': "fs.writeFileSync(%{0}, %{1}, 'utf8')",
},
'math': {
'ln': 'Math.log',
'log': 'Math.log',
'tan': 'Math.tan',
'sin': 'Math.sin',
'cos': 'Math.cos',
'pow': 'Math.pow'
},
'regexp': {
'compile':
lambda value, _: Node('new_instance',
class_name='RegExp',
args=[value],
pseudo_type='Regexp'),
'escape':
'_.escapeRegExp'
}
}
js_dependencies = {'_': 'lodash'}
dependencies = {
'io': {
'read_file': 'fs',
'write_file': 'fs'
},
'regexp': {
'escape': 'lodash'
}
}
Typename = [typename('Egg')]
InstanceVariable = [Node('instance_variable', name='egg')]
Attr = [Node('attr', object=local('e'), attr='egg')]
Assignment = [
Node('assignment', target=local('egg', pseudo_type='Int'), value=local('ham', pseudo_type='Int')),
Node('assignment', target=Node('instance_variable', name='egg', pseudo_type='Int'), value=local('ham', pseudo_type='Int')),
Node('assignment', target=Node('attr', object=Node('typename', name='T'), attr='egg', pseudo_type='String'),
value=local('ham', pseudo_type='String')),
Node('assignment',
target=Node('index',
sequence=local('x', pseudo_type=['List', 'String']),
index=to_node(4),
pseudo_type='String'),
value=to_node('String'))
]
Call = [call('map', [local('x')])]
MethodCall = [method_call(local('e', 'E'), 'filter', [to_node(42)])]
StandardCall = [
Node('standard_call', namespace='io', function='display', args=[to_node(42)], pseudo_type='Void'),
Node('standard_call', namespace='io', function='read', args=[], pseudo_type='String'),
Node('standard_call', namespace='math', function='ln', args=[Node('local', name='ham', pseudo_type='Int')], pseudo_type='Float'),
assignment(
local('source', pseudo_type='String'),
Node('standard_call', namespace='io', function='read_file', args=[to_node('f.py')], pseudo_type='String'))
]
IoDisplay = standard_call('io', 'display', [to_node(2), to_node('z')], 'Void')
IoRead = assignment(local('source', 'String'), standard_call('io', 'read', [], 'String'))
IoReadFile = assignment(local('source', 'String'), standard_call('io', 'read_file', [to_node('z.py')], 'String'))
IoWriteFile = standard_call('io', 'write_file', [to_node('z.py'), local('source', 'String')], 'Void')
