def _define_var(traverser, node):
"Creates a local context variable"
traverser._debug("VARIABLE_DECLARATION")
traverser.debug_level += 1
declarations = (node["declarations"] if "declarations" in node
else node["head"])
kind = node.get("kind", "let")
for declaration in declarations:
# It could be deconstruction of variables :(
if declaration["id"]["type"] == "ArrayPattern":
vars = []
for element in declaration["id"]["elements"]:
# NOTE : Multi-level array destructuring sucks. Maybe implement
# it someday if you're bored, but it's so rarely used and it's
# so utterly complex, there's probably no need to ever code it
# up.
if element is None or element["type"] != "Identifier":
vars.append(None)
continue
vars.append(element["name"])
# The variables are not initialized
if declaration["init"] is None:
# Simple instantiation; no initialization
for var in vars:
if not var:
continue
traverser._declare_variable(var, None)
# The variables are declared inline
elif declaration["init"]["type"] == "ArrayPattern":
# TODO : Test to make sure len(values) == len(vars)
for value in declaration["init"]["elements"]:
if vars[0]:
traverser._declare_variable(
vars[0], JSWrapper(traverser._traverse_node(value),
traverser=traverser))
vars = vars[1:] # Pop off the first value
# It's being assigned by a JSArray (presumably)
elif declaration["init"]["type"] == "ArrayExpression":
assigner = traverser._traverse_node(declaration["init"])
for value in assigner.value.elements:
if vars[0]:
traverser._declare_variable(vars[0], value)
vars = vars[1:]
elif declaration["id"]["type"] == "ObjectPattern":
init = traverser._traverse_node(declaration["init"])
def _proc_objpattern(init_obj, properties):
for prop in properties:
# Get the name of the init obj's member
if prop["key"]["type"] == "Literal":
prop_name = prop["key"]["value"]
elif prop["key"]["type"] == "Identifier":
prop_name = prop["key"]["name"]
else:
continue
if prop["value"]["type"] == "Identifier":
traverser._declare_variable(
prop["value"]["name"],
init_obj.get(traverser, prop_name))
elif prop["value"]["type"] == "ObjectPattern":
_proc_objpattern(init_obj.get(traverser, prop_name),
prop["value"]["properties"])
if init is not None:
_proc_objpattern(init_obj=init,
properties=declaration["id"]["properties"])
else:
var_name = declaration["id"]["name"]
traverser._debug("NAME>>%s" % var_name)
var_value = traverser._traverse_node(declaration["init"])
traverser._debug("VALUE>>%s" % (var_value.output()
if var_value is not None
else "None"))
if not isinstance(var_value, JSWrapper):
var = JSWrapper(value=var_value,
const=kind == "const",
traverser=traverser)
else:
var = var_value
var.const = kind == "const"
traverser._declare_variable(var_name, var, type_=kind)
if "body" in node:
traverser._traverse_node(node["body"])
traverser.debug_level -= 1
# The "Declarations" branch contains custom elements.
return True
def _define_var(traverser, node):
'Creates a local context variable'
traverser._debug('VARIABLE_DECLARATION')
traverser.debug_level += 1
declarations = (node['declarations']
if 'declarations' in node else node['head'])
kind = node.get('kind', 'let')
for declaration in declarations:
# It could be deconstruction of variables :(
if declaration['id']['type'] == 'ArrayPattern':
vars = []
for element in declaration['id']['elements']:
# NOTE : Multi-level array destructuring sucks. Maybe implement
# it someday if you're bored, but it's so rarely used and it's
# so utterly complex, there's probably no need to ever code it
# up.
if element is None or element['type'] != 'Identifier':
vars.append(None)
continue
vars.append(element['name'])
# The variables are not initialized
if declaration['init'] is None:
# Simple instantiation; no initialization
for var in vars:
if not var:
continue
traverser._declare_variable(var, None)
# The variables are declared inline
elif declaration['init']['type'] == 'ArrayPattern':
# TODO : Test to make sure len(values) == len(vars)
for value in declaration['init']['elements']:
if vars[0]:
traverser._declare_variable(
vars[0],
JSWrapper(traverser._traverse_node(value),
traverser=traverser))
vars = vars[1:] # Pop off the first value
# It's being assigned by a JSArray (presumably)
elif declaration['init']['type'] == 'ArrayExpression':
assigner = traverser._traverse_node(declaration['init'])
for value in assigner.value.elements:
if vars[0]:
traverser._declare_variable(vars[0], value)
vars = vars[1:]
elif declaration['id']['type'] == 'ObjectPattern':
init = traverser._traverse_node(declaration['init'])
def _proc_objpattern(init_obj, properties):
for prop in properties:
# Get the name of the init obj's member
if prop['key']['type'] == 'Literal':
prop_name = prop['key']['value']
elif prop['key']['type'] == 'Identifier':
prop_name = prop['key']['name']
else:
continue
if prop['value']['type'] == 'Identifier':
traverser._declare_variable(
prop['value']['name'],
init_obj.get(traverser, prop_name))
elif prop['value']['type'] == 'ObjectPattern':
_proc_objpattern(init_obj.get(traverser, prop_name),
prop['value']['properties'])
if init is not None:
_proc_objpattern(init_obj=init,
properties=declaration['id']['properties'])
else:
var_name = declaration['id']['name']
traverser._debug('NAME>>%s' % var_name)
var_value = traverser._traverse_node(declaration['init'])
traverser._debug(
'VALUE>>%s' %
(var_value.output() if var_value is not None else 'None'))
if not isinstance(var_value, JSWrapper):
var = JSWrapper(value=var_value,
const=kind == 'const',
traverser=traverser)
else:
var = var_value
var.const = kind == 'const'
traverser._declare_variable(var_name, var, type_=kind)
if 'body' in node:
traverser._traverse_node(node['body'])
traverser.debug_level -= 1
# The "Declarations" branch contains custom elements.
return True
def _define_var(traverser, node):
'Creates a local context variable'
traverser._debug('VARIABLE_DECLARATION')
traverser.debug_level += 1
declarations = (node['declarations'] if 'declarations' in node
else node['head'])
kind = node.get('kind', 'let')
for declaration in declarations:
# It could be deconstruction of variables :(
if declaration['id']['type'] == 'ArrayPattern':
vars = []
for element in declaration['id']['elements']:
# NOTE : Multi-level array destructuring sucks. Maybe implement
# it someday if you're bored, but it's so rarely used and it's
# so utterly complex, there's probably no need to ever code it
# up.
if element is None or element['type'] != 'Identifier':
vars.append(None)
continue
vars.append(element['name'])
# The variables are not initialized
if declaration['init'] is None:
# Simple instantiation; no initialization
for var in vars:
if not var:
continue
traverser._declare_variable(var, None)
# The variables are declared inline
elif declaration['init']['type'] == 'ArrayPattern':
# TODO : Test to make sure len(values) == len(vars)
for value in declaration['init']['elements']:
if vars[0]:
traverser._declare_variable(
vars[0], JSWrapper(traverser._traverse_node(value),
traverser=traverser))
vars = vars[1:] # Pop off the first value
# It's being assigned by a JSArray (presumably)
elif declaration['init']['type'] == 'ArrayExpression':
assigner = traverser._traverse_node(declaration['init'])
for value in assigner.value.elements:
if vars[0]:
traverser._declare_variable(vars[0], value)
vars = vars[1:]
elif declaration['id']['type'] == 'ObjectPattern':
init = traverser._traverse_node(declaration['init'])
def _proc_objpattern(init_obj, properties):
for prop in properties:
# Get the name of the init obj's member
if prop['key']['type'] == 'Literal':
prop_name = prop['key']['value']
elif prop['key']['type'] == 'Identifier':
prop_name = prop['key']['name']
else:
continue
if prop['value']['type'] == 'Identifier':
traverser._declare_variable(
prop['value']['name'],
init_obj.get(traverser, prop_name))
elif prop['value']['type'] == 'ObjectPattern':
_proc_objpattern(init_obj.get(traverser, prop_name),
prop['value']['properties'])
if init is not None:
_proc_objpattern(init_obj=init,
properties=declaration['id']['properties'])
else:
var_name = declaration['id']['name']
traverser._debug('NAME>>%s' % var_name)
var_value = traverser._traverse_node(declaration['init'])
traverser._debug('VALUE>>%s' % (var_value.output()
if var_value is not None
else 'None'))
if not isinstance(var_value, JSWrapper):
var = JSWrapper(value=var_value,
const=kind == 'const',
traverser=traverser)
else:
var = var_value
var.const = kind == 'const'
traverser._declare_variable(var_name, var, type_=kind)
if 'body' in node:
traverser._traverse_node(node['body'])
traverser.debug_level -= 1
# The "Declarations" branch contains custom elements.
return True
