use std::fmt;
use jsonrpc_core::{self as core, Error, Params, ErrorCode, Value};
use serde;
pub fn invalid_params<T>(param: &str, details: T) -> Error where T: fmt::Debug {
Error {
code: ErrorCode::InvalidParams,
message: format!("Couldn't parse parameters: {}", param),
data: Some(Value::String(format!("{:?}", details))),
}
}
pub fn expect_no_params(params: Params) -> core::Result<()> {
match params {
Params::None => Ok(()),
Params::Array(ref v) if v.is_empty() => Ok(()),
p => Err(invalid_params("No parameters were expected", p)),
}
}
pub fn to_value<T>(value: T) -> Value where T: serde::Serialize {
core::to_value(value).expect("Expected always-serializable type.")
}