{
    "type": "Program",
    "body": [
        {
            "type": "ExpressionStatement",
            "expression": {
                "type": "BinaryExpression",
                "operator": "+",
                "left": {
                    "type": "CallExpression",
                    "callee": {
                        "type": "Identifier",
                        "name": "f"
                    },
                    "arguments": [
                        {
                            "type": "Literal",
                            "value": 1
                        },
                        {
                            "type": "Identifier",
                            "name": "x"
                        }
                    ]
                },
                "right": {
                    "type": "Literal",
                    "value": 2
                }
            }
        }
    ]
}