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use super::GenericDecimal;
use generic::GenericInteger;
use juniper::{ParseScalarResult, ParseScalarValue, Value};
use std::fmt;
use std::str::FromStr;
impl<__S, T, P> ::juniper::GraphQLValueAsync<__S> for GenericDecimal<T, P>
where
Self: Sync,
Self::TypeInfo: Sync,
Self::Context: Sync,
T: Clone + GenericInteger + From<u8> + fmt::Display,
P: Copy + GenericInteger + Into<usize> + From<u8>,
__S: ::juniper::ScalarValue + Send + Sync,
{
fn resolve_async<'a>(
&'a self,
info: &'a Self::TypeInfo,
selection_set: Option<&'a [::juniper::Selection<__S>]>,
executor: &'a ::juniper::Executor<Self::Context, __S>,
) -> ::juniper::BoxFuture<'a, ::juniper::ExecutionResult<__S>> {
use juniper::futures::future;
let v = ::juniper::GraphQLValue::resolve(self, info, selection_set, executor);
Box::pin(future::ready(v))
}
}
impl<S, T, P> ::juniper::marker::IsInputType<S> for GenericDecimal<T, P>
where
S: ::juniper::ScalarValue,
T: Clone + GenericInteger + From<u8> + fmt::Display,
P: Copy + GenericInteger + Into<usize> + From<u8>,
{
}
impl<S, T, P> ::juniper::marker::IsOutputType<S> for GenericDecimal<T, P>
where
S: ::juniper::ScalarValue,
T: Clone + GenericInteger,
P: Copy + GenericInteger + Into<usize> + From<u8>,
{
}
impl<S, T, P> ::juniper::GraphQLType<S> for GenericDecimal<T, P>
where
S: ::juniper::ScalarValue,
T: Clone + GenericInteger + From<u8> + fmt::Display,
P: Copy + GenericInteger + Into<usize> + From<u8>,
{
fn name(_: &Self::TypeInfo) -> Option<&'static str> {
Some("Decimal")
}
fn meta<'r>(
info: &Self::TypeInfo,
registry: &mut ::juniper::Registry<'r, S>,
) -> ::juniper::meta::MetaType<'r, S>
where
S: 'r,
{
registry
.build_scalar_type::<Self>(info)
.description("Decimal")
.into_meta()
}
}
impl<S, T, P> ::juniper::GraphQLValue<S> for GenericDecimal<T, P>
where
S: ::juniper::ScalarValue,
T: Clone + GenericInteger + From<u8> + fmt::Display,
P: Copy + GenericInteger + Into<usize> + From<u8>,
{
type Context = ();
type TypeInfo = ();
fn type_name<'__i>(&self, info: &'__i Self::TypeInfo) -> Option<&'__i str> {
<Self as ::juniper::GraphQLType<S>>::name(info)
}
fn resolve(
&self,
_info: &(),
_selection: Option<&[::juniper::Selection<S>]>,
_executor: &::juniper::Executor<Self::Context, S>,
) -> ::juniper::ExecutionResult<S> {
Ok(Value::scalar(format!("{}", self)))
}
}
impl<S, T, P> ::juniper::ToInputValue<S> for GenericDecimal<T, P>
where
S: ::juniper::ScalarValue,
T: Clone + GenericInteger,
P: Copy + GenericInteger + Into<usize>,
{
fn to_input_value(&self) -> ::juniper::InputValue<S> {
::juniper::ToInputValue::to_input_value(&format!("{}", self))
}
}
impl<S, T, P> ::juniper::FromInputValue<S> for GenericDecimal<T, P>
where
S: ::juniper::ScalarValue,
T: Clone + GenericInteger,
P: Copy + GenericInteger + Into<usize> + From<u8>,
{
fn from_input_value(value: &::juniper::InputValue<S>) -> Option<Self> {
{
let val = match value.as_string_value() {
None => return None,
Some(string) => string,
};
Some(FromStr::from_str(val).ok())?
}
}
}
impl<S, T, P> ::juniper::ParseScalarValue<S> for GenericDecimal<T, P>
where
S: ::juniper::ScalarValue,
T: Clone + GenericInteger,
P: Copy + GenericInteger + Into<usize>,
{
fn from_str(value: ::juniper::parser::ScalarToken<'_>) -> ParseScalarResult<'_, S> {
{
<String as ParseScalarValue<S>>::from_str(value)
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use fraction::GenericFraction;
use juniper::{FromInputValue, InputValue, ToInputValue};
type D = GenericDecimal<u64, u8>;
type F = GenericFraction<u64>;
fn get_tests() -> Vec<(&'static str, D)> {
vec![
("NaN", D::nan()),
("-inf", D::neg_infinity()),
("inf", D::infinity()),
("0", D::from_fraction(F::new(0u64, 1u64))),
("2", D::from_fraction(F::new(2u64, 1u64))),
("-2", D::from_fraction(F::new_neg(2u64, 1u64))),
("0.5", D::from_fraction(F::new(1u64, 2u64))),
("-0.5", D::from_fraction(F::new_neg(1u64, 2u64))),
("0.625", D::from_fraction(F::new(5u64, 8u64))),
(
"246.5856420264",
D::from_fraction(F::new(308232052533u64, 1250000000u64)),
),
]
}
#[test]
fn to_input_value() {
for (s, v) in get_tests() {
let value = <D as ToInputValue>::to_input_value(&v);
let str_value = value.as_scalar_value::<String>();
assert!(str_value.is_some());
assert_eq!(s, str_value.unwrap());
}
}
#[test]
fn from_input_value() {
for (s, v) in get_tests() {
let value = <D as FromInputValue>::from_input_value(&InputValue::scalar(s.to_owned()));
assert_eq!(value, Some(v));
assert_eq!(value.unwrap().get_precision(), v.get_precision())
}
}
}