qiskit/converters/ast_to_dag.py
def _process_if(self, node):
        """Process an if node."""
        creg_name = node.children[0].name
        creg = self.dag.cregs[creg_name]
        cval = node.children[1].value
        self.condition = (creg, cval)
        self._process_node(node.children[2])
        self.condition = None
def _process_if(self, node):
        """Process an if node."""
        creg_name = node.children[0].name
        creg = self.dag.cregs[creg_name]
        cval = node.children[1].value
        self.condition = (creg, cval)
        self._process_node(node.children[2])
        self.condition = None
Process an if node.