# coding: utf8
from pycropml.transpiler.codeGenerator import CodeGenerator
from pycropml.transpiler.rules.pythonRules import PythonRules
from pycropml.transpiler.generators.docGenerator import DocGenerator
import os
from pycropml.render_cyml import signature
from path import Path
from pycropml.transpiler.Parser import parser
from pycropml.transpiler.ast_transform import AstTransformer, transform_to_syntax_tree
[docs]class PythonGenerator(CodeGenerator, PythonRules):
"""This class contains the specific properties of
python language and use the NodeVisitor to generate a python
code source from a well formed syntax tree.
"""
def __init__(self, tree, model=None, name = None):
CodeGenerator.__init__(self)
PythonRules.__init__(self)
self.tree=tree
self.model=model
self.name = name
self.indent_with=' '*4
self.imp=True
if self.model:
self.doc=DocGenerator(self.model, " ")
[docs] def visit_import(self, node):
if self.imp:
self.write(u"import %s" % node.module)
[docs] def visit_notAnumber(self, node):
self.write("float('nan')")
[docs] def visit_assignment(self, node):
self.newline(node)
self.visit(node.target)
self.write(' = ')
self.visit(node.value)
[docs] def visit_cond_expr_node(self, node):
self.visit(node.true_val)
self.write(u" if ")
self.visit(node.test)
self.write(u" else ")
self.visit(node.false_val)
[docs] def visit_if_statement(self, node):
self.newline(node)
self.write('if ')
self.visit(node.test)
self.write(':')
self.body(node.block)
while True:
else_ = node.otherwise
if len(else_) == 0:
break
elif len(else_) == 1 and else_[0].type=='elseif_statement':
self.visit(else_[0])
else:
self.visit(else_)
break
break
[docs] def visit_elseif_statement(self, node):
self.newline()
self.write('elif ')
self.visit(node.test)
self.write(':')
self.body(node.block)
[docs] def visit_else_statement(self, node):
self.newline()
self.write('else:')
self.body(node.block)
[docs] def visit_float(self, node):
self.write(node.value)
[docs] def visit_bool(self, node):
self.write(str(node.value))
[docs] def visit_str(self, node):
self.safe_double(node)
[docs] def visit_tuple(self, node):
self.emit_sequence(node.elements, u"()")
[docs] def visit_dict(self, node):
self.emit_sequence(node.pairs, u"{}")
[docs] def visit_pair(self, node):
self.visit(node.key)
self.write(u": ")
self.visit(node.value)
[docs] def visit_ExprStatNode(self, node):
self.newline(node)
self.visit(node.expr)
[docs] def visit_list(self, node):
self.emit_sequence(node.elements, u"[]")
[docs] def visit_datetime(self, node):
self.write("datetime")
self.emit_sequence(node.value, u"()")
[docs] def visit_standard_method_call(self, node):
l = node.receiver.pseudo_type
if isinstance(l, list):
l = l[0]
z = self.methods[l][node.message]
if callable(z):
self.visit(z(node))
else:
if not node.args:
self.write(node.message)
self.write('(')
self.visit(node.receiver)
self.write(')')
else:
"%s.%s"%(self.visit(node.receiver),self.write(z))
self.write("(")
self.comma_separated_list(node.args)
self.write(")")
[docs] def visit_custom_call(self, node):
self.visit_call(node)
[docs] def visit_index(self, node):
self.visit(node.sequence)
self.write(u"[")
if isinstance(node.index.type, tuple):
self.emit_sequence(node.index)
else:
self.visit(node.index)
self.write(u"]")
[docs] def visit_sliceindex(self, node):
self.visit(node.receiver)
self.write(u"[")
if node.message=="sliceindex_from":
self.visit(node.args)
self.write(u":")
if node.message=="sliceindex_to":
self.write(u":")
self.visit(node.args)
if node.message=="sliceindex":
self.visit(node.args[0])
self.write(u":")
self.visit(node.args[1])
self.write(u"]")
[docs] def visit_module(self, node):
self.newline(extra=1)
self.newline(node)
self.write("# coding: utf8")
self.newline(node)
self.visit(node.body)
[docs] def visit_comparison(self, node):
#self.write('(')
self.visit_binary_op(node)
#self.write(')')
[docs] def visit_method_call(self, node):
"%s.%s"%(self.visit(node.receiver),self.write(node.message))
[docs] def visit_binary_op(self, node):
op = node.op
prec = self.binop_precedence.get(op, 0)
self.operator_enter(prec)
self.visit(node.left)
self.write(u" %s " % self.binary_op[op].replace('_', ' '))
if "type" in dir(node.right):
if node.right.type=="binary_op" and node.right.op not in ("+","-") :
self.write("(")
self.visit(node.right)
self.write(")")
else:
self.visit(node.right)
else:
self.visit(node.right)
self.operator_exit()
[docs] def visit_unary_op(self, node):
op = node.operator
prec = self.unop_precedence[op]
self.operator_enter(prec)
self.write(u"%s" % self.unary_op[op])
self.visit(node.value)
self.operator_exit()
[docs] def visit_function_definition(self, node):
self.newline(extra=1)
self.newline(node)
self.write('def %s(' % node.name)
for i, pa in enumerate(node.params):
#if pa.type == "local":
self.write(pa.name)
if "value" in dir(pa) or "elements" in dir(pa) or "pairs" in dir(pa) :
#self.write(pa.name)
self.write(" = ")
self.visit(pa)
if i!= (len(node.params)-1):
self.write(',\n ')
self.write('):')
self.newline(node)
if self.model and node.name.split("model_")[1]==signature(self.model):
self.write(' """\n')
self.write(self.doc.desc)
self.newline(node)
self.write(self.doc.inputs_doc)
self.newline(node)
self.write(self.doc.outputs_doc)
self.newline(node)
self.write(' """\n')
self.newline(node)
self.model = None
self.body(node.block)
[docs] def visit_implicit_return(self, node):
self.newline(node)
if node.value is None:
self.write('return')
else:
self.write('return ')
self.visit(node.value)
[docs] def visit_declaration(self, node):
self.newline(node)
for n in node.decl :
if 'value' in dir(n) and n.type in ("int", "float"):
self.newline(node)
self.write(n.name)
self.write(" = ")
self.write(n.value)
elif 'value' in dir(n) and n.type=="bool":
self.newline(node)
self.write(n.name)
self.write(" = ")
self.write(str(n.value))
elif 'value' in dir(n) and n.type=="str":
self.newline(node)
self.write(n.name)
self.write(" = ")
self.emit_string(n)
elif 'elements' in dir(n) and n.type in ("list", "tuple"):
self.newline(node)
self.write(n.name)
self.write(" = ")
if n.type=="list":
self.visit_list(n)
else: self.visit_tuple(n)
elif 'args' in dir(n) and n.type=='datetime':
self.newline(node)
self.write(n.name)
self.write(" = datetime")
self.visit_datetime
elif 'pairs' in dir(n) and n.type=="dict":
self.newline(node)
self.write(n.name)
self.write(" = ")
self.visit_dict(n)
elif n.type=="array" and 'elements' in dir(n):
self.visit_array(n)
elif n.type in ("list", "array"):
self.newline(node)
self.write(n.name)
self.write(" = []")
[docs] def visit_array(self,node):
self.write(node.name)
'''self.write(" =np.ndarray((")
self.comma_separated_list(node.elts)
self.write("),dtype=%s)"%node.pseudo_type[-1])'''
[docs] def visit_continuestatnode(self, node):
self.newline(node)
self.write('continue')
[docs] def visit_breakstatnode(self, node):
self.newline(node)
self.write('break')
[docs] def visit_call(self, node):
want_comma = []
def write_comma():
if want_comma:
self.write(', ')
else:
want_comma.append(True)
if "attrib" in dir(node):
self.write(u"%s.%s"%(node.namespace,self.visit(node.function)))
else:
self.write(self.visit(node.function))
self.write('(')
for arg in node.args:
write_comma()
self.visit(arg)
self.write(')')
[docs] def visit_standard_call(self, node):
node.function = self.functions[node.namespace][node.function]
self.visit_call(node)
[docs] def visit_importfrom(self, node):
if self.imp:
self.newline(node)
if node.namespace=="math":
self.write("from math import *")
else:
self.write('from %s import ' % (node.namespace))
for idx, item in enumerate(node.name):
if idx:
self.write(', ')
self.write(item)
[docs] def visit_for_statement(self, node):
self.newline(node)
self.write("for ")
if "iterators" in dir(node):
self.visit(node.iterators)
if "sequences" in dir(node):
self.visit(node.sequences)
self.body(node.block)
[docs] def visit_for_iterator_with_index(self, node):
self.visit(node.index)
self.write(' , ')
self.visit(node.iterator)
[docs] def visit_for_sequence_with_index(self, node):
self.write(" in enumerate(")
self.visit(node.sequence)
self.write('):')
[docs] def visit_for_iterator(self, node):
self.visit(node.iterator)
self.write(" in ")
[docs] def visit_for_sequence(self, node):
self.visit(node.sequence)
self.write(":")
[docs] def visit_for_range_statement(self, node):
self.newline(node)
self.write("for ")
self.visit(node.index)
self.write(" in range(")
self.visit(node.start)
self.write(' , ')
self.visit(node.end)
if node.step.value!=1:
self.write(' , ')
self.visit(node.step)
self.write('):')
self.body(node.block)
[docs] def visit_while_statement(self, node):
self.newline(node)
self.write('while ')
self.visit(node.test)
self.write(':')
self.body_or_else(node)
[docs]class PythonCompo(PythonGenerator):
""" This class used to generates states, rates and auxiliary classes
for C# languages.
"""
def __init__(self, tree, model=None, name=None):
self.tree = tree
self.model = model
self.name = name
PythonGenerator.__init__(self,tree, model, self.name)