Python ast.Mod方法代码示例

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_BinOp(self, node):
        if isinstance(node.op, ast.Mod) and self.context == _context.PRINT:
            self.visit(node.left)
            self.write(", ")
            self.visit(node.right)
        else:
            if isinstance(node.op, ast.RShift):
                # Additional cast to signed of the full expression
                # this is apparently required by cver - not sure if it
                # is actually required by standard Verilog.
                # It shouldn't hurt however.
                if node.signed:
                    self.write("$signed")
            self.context = None
            if node.signed:
                self.context = _context.SIGNED
            self.write("(")
            self.visit(node.left)
            self.write(" %s " % opmap[type(node.op)])
            self.visit(node.right)
            self.write(")")
            self.context = None 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_AugAssign(self, node):
        # XXX apparently no signed context required for augmented assigns
        left, op, right = node.target, node.op, node.value
        isFunc = False
        pre, suf = "", ""
        if isinstance(op, (ast.Add, ast.Sub, ast.Mult, ast.Mod, ast.FloorDiv)):
            pre, suf = self.inferBinaryOpCast(node, left, right, op)
        elif isinstance(op, (ast.LShift, ast.RShift)):
            isFunc = True
            pre, suf = self.inferShiftOpCast(node, left, right, op)
        self.visit(left)
        self.write(" := ")
        self.write(pre)
        if isFunc:
            self.write("%s(" % opmap[type(op)])
        self.visit(left)
        if isFunc:
            self.write(", ")
        else:
            self.write(" %s " % opmap[type(op)])
        self.visit(right)
        if isFunc:
            self.write(")")
        self.write(suf)
        self.write(";") 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def term_rewrite(head, tail):
    if tail:
        for op, each in tail:
            head = ast.BinOp(
                head,
                {
                    '*': ast.Mult,
                    '@': ast.MatMult,
                    '%': ast.Mod,
                    '//': ast.FloorDiv,
                    '/': ast.Div
                }[op.value](),
                each,
                **loc @ op,
            )
    return head 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def augassign_rewrite(it: Tokenizer):
    return {
        '+=': ast.Add,
        '-=': ast.Sub,
        '*=': ast.Mult,
        '/=': ast.Div,
        '//=': ast.FloorDiv,
        '@=': ast.MatMult,
        '%=': ast.Mod,
        '&=': ast.BitAnd,
        '|=': ast.BitOr,
        '^=': ast.BitXor,
        '<<=': ast.LShift,
        '>>=': ast.RShift,
        '**=': ast.Pow,
    }[it.value] 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_BinOp(self, node):
        'If node is a constant expression, replace it with its evaluated value'
        if node in self.constexpr:
            # evaluation
            fake_node = ast.Expression(ast.BinOp(node, ast.Mod(),
                                                 ast.Num(self.mod)))
            ast.fix_missing_locations(fake_node)
            code = compile(fake_node, '<constant folding>', 'eval')
            obj_env = globals().copy()
            exec code in obj_env
            value = eval(code, obj_env)

            new_node = ast.Num(value)
            return new_node
        else:
            return self.generic_visit(node) 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_UnaryOp(self, node):
        'Same idea as visit_BinOp'
        if node in self.constexpr:
            # evaluation
            fake_node = ast.Expression(ast.BinOp(node, ast.Mod(),
                                                 ast.Num(self.mod)))
            ast.fix_missing_locations(fake_node)
            code = compile(fake_node, '<constant folding>', 'eval')
            obj_env = globals().copy()
            exec code in obj_env

            value = eval(code, obj_env)
            new_node = ast.Num(value)
            return new_node
        else:
            return self.generic_visit(node) 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def pop_format_context(self, expl_expr):
        """Format the %-formatted string with current format context.

        The expl_expr should be an ast.Str instance constructed from
        the %-placeholders created by .explanation_param().  This will
        add the required code to format said string to .expl_stmts and
        return the ast.Name instance of the formatted string.

        """
        current = self.stack.pop()
        if self.stack:
            self.explanation_specifiers = self.stack[-1]
        keys = [ast.Str(key) for key in current.keys()]
        format_dict = ast.Dict(keys, list(current.values()))
        form = ast.BinOp(expl_expr, ast.Mod(), format_dict)
        name = "@py_format" + str(next(self.variable_counter))
        if self.enable_assertion_pass_hook:
            self.format_variables.append(name)
        self.expl_stmts.append(ast.Assign([ast.Name(name, ast.Store())], form))
        return ast.Name(name, ast.Load()) 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def pop_format_context(self, expl_expr: ast.expr) -> ast.Name:
        """Format the %-formatted string with current format context.

        The expl_expr should be an str ast.expr instance constructed from
        the %-placeholders created by .explanation_param().  This will
        add the required code to format said string to .expl_stmts and
        return the ast.Name instance of the formatted string.

        """
        current = self.stack.pop()
        if self.stack:
            self.explanation_specifiers = self.stack[-1]
        keys = [ast.Str(key) for key in current.keys()]
        format_dict = ast.Dict(keys, list(current.values()))
        form = ast.BinOp(expl_expr, ast.Mod(), format_dict)
        name = "@py_format" + str(next(self.variable_counter))
        if self.enable_assertion_pass_hook:
            self.format_variables.append(name)
        self.expl_stmts.append(ast.Assign([ast.Name(name, ast.Store())], form))
        return ast.Name(name, ast.Load()) 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def transform2call(var):
    if isinstance(var, ast.BinOp):
        is_mod = isinstance(var.op, ast.Mod)
        is_left_str = isinstance(var.left, ast.Str)
        if is_mod and is_left_str:
            new_call = ast.Call()
            new_call.args = []
            new_call.args = []
            if six.PY2:
                new_call.starargs = None
            new_call.keywords = None
            if six.PY2:
                new_call.kwargs = None
            new_call.lineno = var.lineno
            new_call.func = ast.Attribute()
            new_call.func.value = var.left
            new_call.func.attr = 'format'
            if isinstance(var.right, ast.Tuple):
                new_call.args = var.right.elts
            elif six.PY2 and isinstance(var.right, ast.Dict):
                new_call.kwargs = var.right
            else:
                new_call.args = [var.right]
            return new_call 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_BinOp(self, node):
    # Examples:
    #   BinOp(left=Bytes(s=b'%4x'), op=Mod(), right=Num(n=10))
    #   BinOp(left=Call(func=Name(id='bytearray', ctx=Load()), args=[Bytes(s=b'%x')], keywords=[]),
    #         op=Mod(), right=Num(n=10))
    if (hasattr(ast, "Bytes") and isinstance(node.left, ast.Bytes))\
       and isinstance(node.op, ast.Mod):
      self.__bytes_format = True
      self.__vvprint("bytes `%` formatting requires 3.5+ (or 2.6+ as `str` synonym)")

    if (isinstance(node.left, ast.Call) and isinstance(node.left.func, ast.Name) and
         node.left.func.id == "bytearray") and isinstance(node.op, ast.Mod):
      self.__bytearray_format = True
      self.__vvprint("bytearray `%` formatting requires 3.5+")

    self.generic_visit(node) 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def __build_unconditional_arg_check(self, argname, argtype):

		presence_check = ast.Call(func = ast.Name(id='isinstance', ctx=ast.Load()),
				args         = [ast.Name(id=argname, ctx=ast.Load()), argtype],
				keywords     = [],
				lineno       = self.__get_line())

		types = [t.id for t in argtype.elts]
		check_message = ast.BinOp(
				left         = ast.Str(s='Argument \'{}\' must be of type \'{}\'. Received type: \'%s\''.format(argname, types)),
				op           = ast.Mod(),
				right        = ast.Call(func=ast.Name(id='type', ctx=ast.Load()), args=[ast.Name(id=argname, ctx=ast.Load())], keywords=[]),
				lineno       = self.__get_line())

		new_ret = ast.Assert(
			test         = presence_check,
			msg          = check_message,
			lineno       = self.__get_line())


		return new_ret 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_BinOp(self, node):
        self.generic_visit(node)
        if isinstance(node.op, (ast.LShift, ast.RShift)):
            self.inferShiftType(node)
        elif isinstance(node.op, (ast.BitAnd, ast.BitOr, ast.BitXor)):
            self.inferBitOpType(node)
        elif isinstance(node.op, ast.Mod) and isinstance(node.left, ast.Str):  # format string
            pass
        else:
            self.inferBinOpType(node) 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_BinOp(self, node: ast.BinOp) -> None:
        if isinstance(node.op, ast.Mod) and isinstance(node.left, ast.Str):
            try:
                parsed = parse_percent_format(node.left.s)
            except ValueError:
                pass
            else:
                for _, fmt in parsed:
                    if not fmt:
                        continue
                    key, conversion_flag, width, precision, conversion = fmt
                    # timid: these require out-of-order parameter consumption
                    if width == '*' or precision == '.*':
                        break
                    # these conversions require modification of parameters
                    if conversion in {'d', 'i', 'u', 'c'}:
                        break
                    # timid: py2: %#o formats different from {:#o} (--py3?)
                    if '#' in (conversion_flag or '') and conversion == 'o':
                        break
                    # no equivalent in format
                    if key == '':
                        break
                    # timid: py2: conversion is subject to modifiers (--py3?)
                    nontrivial_fmt = any((conversion_flag, width, precision))
                    if conversion == '%' and nontrivial_fmt:
                        break
                    # no equivalent in format
                    if conversion in {'a', 'r'} and nontrivial_fmt:
                        break
                    # all dict substitutions must be named
                    if isinstance(node.right, ast.Dict) and not key:
                        break
                else:
                    self.found[_ast_to_offset(node)] = node
        self.generic_visit(node) 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def __init__( s, component ):
    super().__init__( component )
    s.loop_var_env = set()
    s.tmp_var_env = set()

    # opmap maps an ast operator to its RTLIR counterpart.
    s.opmap = {
      # Bool operators
      # Note: we do not support boolean operators because Python does
      # not allow overloading And and Or operators. Using them in
      # expressions might lead to inconsistent semantics.
      # ast.And    : bir.And(),       ast.Or     : bir.Or(),
      # Unary operators
      # Note: ast.Not is disallowed because it is a boolean operator
      # ast.Not    : bir.Not(),
      ast.Invert : bir.Invert(),
      ast.UAdd   : bir.UAdd(),      ast.USub   : bir.USub(),
      # Binary operators
      ast.Add    : bir.Add(),       ast.Sub    : bir.Sub(),
      ast.Mult   : bir.Mult(),      ast.Div    : bir.Div(),
      ast.Mod    : bir.Mod(),       ast.Pow    : bir.Pow(),
      ast.LShift : bir.ShiftLeft(), ast.RShift : bir.ShiftRightLogic(),
      ast.BitOr  : bir.BitOr(),     ast.BitAnd : bir.BitAnd(),
      ast.BitXor : bir.BitXor(),
      # Compare bir.bir.operators
      ast.Eq     : bir.Eq(),        ast.NotEq  : bir.NotEq(),
      ast.Lt     : bir.Lt(),        ast.LtE    : bir.LtE(),
      ast.Gt     : bir.Gt(),        ast.GtE    : bir.GtE()
    }

  # Override 

# 需要导入模块: import ast [as 别名]
# 或者: from ast import Mod [as 别名]
def visit_Call(self, node):
        """iX(Y) -> ExprIntX(Y),
        'X'(Y) -> ExprOp('X', Y), ('X' % Y)(Z) -> ExprOp('X' % Y, Z)"""

        # Recursive visit
        node = self.generic_visit(node)
        if isinstance(node.func, ast.Name):
            # iX(Y) -> ExprInt(Y, X)
            fc_name = node.func.id

            # Match the function name
            new_name = fc_name
            integer = self.parse_integer.search(fc_name)

            # Do replacement
            if integer is not None:
                size = int(integer.groups()[0])
                new_name = "ExprInt"
                # Replace in the node
                node.func.id = new_name
                node.args.append(ast.Num(n=size))

        elif (isinstance(node.func, ast.Str) or
              (isinstance(node.func, ast.BinOp) and
               isinstance(node.func.op, ast.Mod) and
               isinstance(node.func.left, ast.Str))):
            # 'op'(args...) -> ExprOp('op', args...)
            # ('op' % (fmt))(args...) -> ExprOp('op' % (fmt), args...)
            op_name = node.func

            # Do replacement
            node.func = ast.Name(id="ExprOp", ctx=ast.Load())
            node.args[0:0] = [op_name]

        return node