4 releases
0.0.4 | Mar 2, 2024 |
---|---|
0.0.3 | Jul 8, 2023 |
0.0.2 | Jan 30, 2021 |
0.0.1 | Jan 9, 2021 |
#908 in Parser implementations
670 downloads per month
15KB
401 lines
fieldmask
A rust library that supports (de)serializing/applying fieldmask.
Example
use std::convert::TryFrom;
use fieldmask::{FieldMask, FieldMaskInput, Maskable};
#[derive(Debug, PartialEq, Maskable)]
struct Parent {
primitive: String,
child_1: Child,
child_2: Child,
#[fieldmask(flatten)]
one_of_field: Option<OneOfField>,
}
#[derive(Debug, PartialEq, Maskable)]
struct Child {
field_one: String,
field_two: u32,
}
#[derive(Debug, PartialEq, Maskable)]
enum OneOfField {
VariantOne(String),
VariantTwo(u32),
}
impl Default for OneOfField {
fn default() -> Self {
Self::VariantOne(String::default())
}
}
#[test]
fn case_1() {
let mut target_struct = Parent {
primitive: "string".into(),
child_1: Child {
field_one: "child_1 field one".into(),
field_two: 1,
},
child_2: Child {
field_one: "child_2 field one".into(),
field_two: 2,
},
one_of_field: Some(OneOfField::VariantOne("variant one".into())),
};
let src_struct = Parent {
primitive: "updated string".into(),
child_1: Child {
field_one: "updated child_1 field one".into(),
field_two: 10,
},
child_2: Child {
field_one: "updated child_2 field one".into(),
field_two: 20,
},
one_of_field: Some(OneOfField::VariantTwo(50)),
};
let expected_struct = Parent {
primitive: "updated string".into(),
child_1: Child {
field_one: "child_1 field one".into(),
field_two: 10,
},
child_2: Child {
field_one: "updated child_2 field one".into(),
field_two: 20,
},
one_of_field: Some(OneOfField::VariantTwo(50)),
};
FieldMask::try_from(FieldMaskInput(
vec![
"primitive",
"child_1.field_two",
"child_2", // if child properties are not specified, all properties are included.
"variant_two", // if a field is marked with `flatten`, its properties are merged with its parents properties.
]
.into_iter(),
))
.expect("unable to deserialize mask")
.apply(&mut target_struct, src_struct);
assert_eq!(target_struct, expected_struct);
}
Dependencies
~2MB
~41K SLoC