def translate_func(name, block, args):
"""Translates functions and all nested functions to Python code.
name - name of that function (global functions will be available under var while
inline will be available directly under this name )
block - code of the function (*with* brackets {} )
args - arguments that this function takes"""
inline = name.startswith('PyJsLvalInline')
real_name = ''
if inline:
name, real_name = name.split('@')
arglist = ', '.join(args) + ', ' if args else ''
code = '@Js\ndef %s(%sthis, arguments, var=var):\n' % (name, arglist)
# register local variables
scope = "'this':this, 'arguments':arguments" # it will be a simple dictionary
for arg in args:
scope += ', %s:%s' % (repr(arg), arg)
if real_name:
scope += ', %s:%s' % (repr(real_name), name)
code += indent('var = Scope({%s}, var)\n' % scope)
block, nested_hoisted, nested_inline = remove_functions(block)
py_code, to_register = translate_flow(block)
# register variables declared with var and names of hoisted functions.
to_register += nested_hoisted.keys()
if to_register:
code += indent('var.registers(%s)\n' % str(to_register))
for nested_name, info in nested_hoisted.iteritems():
nested_block, nested_args = info
new_code = translate_func('PyJsLvalTempHoisted', nested_block,
nested_args)
# Now put definition of hoisted function on the top
code += indent(new_code)
code += indent('PyJsLvalTempHoisted.func_name = %s\n' %
repr(nested_name))
code += indent('var.put(%s, PyJsLvalTempHoisted)\n' %
repr(nested_name))
for nested_name, info in nested_inline.iteritems():
nested_block, nested_args = info
new_code = translate_func(nested_name, nested_block, nested_args)
# Inject definitions of inline functions just before usage
# nested inline names have this format : LVAL_NAME@REAL_NAME
py_code = inject_before_lval(py_code,
nested_name.split('@')[0], new_code)
if py_code.strip():
code += indent(py_code)
return code
def translate_func(name, block, args):
"""Translates functions and all nested functions to Python code.
name - name of that function (global functions will be available under var while
inline will be available directly under this name )
block - code of the function (*with* brackets {} )
args - arguments that this function takes"""
inline = name.startswith('PyJsLvalInline')
real_name = ''
if inline:
name, real_name = name.split('@')
arglist = ', '.join(args) + ', ' if args else ''
code = '@Js\ndef %s(%sthis, arguments, var=var):\n' % (name, arglist)
# register local variables
scope = "'this':this, 'arguments':arguments" #it will be a simple dictionary
for arg in args:
scope += ', %s:%s' % (repr(arg), arg)
if real_name:
scope += ', %s:%s' % (repr(real_name), name)
code += indent('var = Scope({%s}, var)\n' % scope)
block, nested_hoisted, nested_inline = remove_functions(block)
py_code, to_register = translate_flow(block)
#register variables declared with var and names of hoisted functions.
to_register += nested_hoisted.keys()
if to_register:
code += indent('var.registers(%s)\n' % str(to_register))
for nested_name, info in nested_hoisted.iteritems():
nested_block, nested_args = info
new_code = translate_func('PyJsLvalTempHoisted', nested_block,
nested_args)
# Now put definition of hoisted function on the top
code += indent(new_code)
code += indent(
'PyJsLvalTempHoisted.func_name = %s\n' % repr(nested_name))
code += indent(
'var.put(%s, PyJsLvalTempHoisted)\n' % repr(nested_name))
for nested_name, info in nested_inline.iteritems():
nested_block, nested_args = info
new_code = translate_func(nested_name, nested_block, nested_args)
# Inject definitions of inline functions just before usage
# nested inline names have this format : LVAL_NAME@REAL_NAME
py_code = inject_before_lval(py_code,
nested_name.split('@')[0], new_code)
if py_code.strip():
code += indent(py_code)
return code
# print time.time()
# print translate_js('if (1) console.log("Hello, World!"); else if (5) console.log("Hello world?");')
# print time.time()
t = """
var x = [1,2,3,4,5,6];
for (var e in x) {console.log(e); delete x[3];}
console.log(5 in [1,2,3,4,5]);
"""
SANDBOX = '''
import traceback
try:
%s
except:
print traceback.format_exc()
print
raw_input('Press Enter to quit')
'''
if __name__ == '__main__':
# test with jq if works then it really works :)
# with open('jq.js', 'r') as f:
# jq = f.read()
# res = translate_js(jq)
res = translate_js(t)
dbg(SANDBOX % indent(res))
print
'Done'
#print inject_before_lval(' chuj\n moj\n lval\nelse\n', 'lval', 'siema\njestem piter\n')
import time
#print time.time()
#print translate_js('if (1) console.log("Hello, World!"); else if (5) console.log("Hello world?");')
#print time.time()
t = """
var x = [1,2,3,4,5,6];
for (var e in x) {console.log(e); delete x[3];}
console.log(5 in [1,2,3,4,5]);
"""
SANDBOX ='''
import traceback
try:
%s
except:
print traceback.format_exc()
print
raw_input('Press Enter to quit')
'''
if __name__=='__main__':
# test with jq if works then it really works :)
#with open('jq.js', 'r') as f:
#jq = f.read()
#res = translate_js(jq)
res = translate_js(t)
dbg(SANDBOX% indent(res))
print 'Done'
