serde_ignored-0.1.0/.gitignore010064400017500001750000000000221346021560000145210ustar0000000000000000target Cargo.lock serde_ignored-0.1.0/.travis.yml010064400017500001750000000001411346200166200146470ustar0000000000000000sudo: false language: rust rust: - stable - beta - nightly - 1.31.0 script: cargo test serde_ignored-0.1.0/Cargo.toml.orig010066400017500001750000000010131352631434300154320ustar0000000000000000[package] name = "serde_ignored" version = "0.1.0" # update html_root_url and version in readme authors = ["David Tolnay "] edition = "2018" license = "MIT OR Apache-2.0" description = "Find out about keys that are ignored when deserializing data" repository = "https://github.com/dtolnay/serde-ignored" keywords = ["serde"] categories = ["encoding"] [dependencies] serde = "1.0" [dev-dependencies] serde_derive = "1.0" serde_json = "1.0" [badges] travis-ci = { repository = "dtolnay/serde-ignored" } serde_ignored-0.1.0/Cargo.toml0000644000000020160000000000000116770ustar00# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO # # When uploading crates to the registry Cargo will automatically # "normalize" Cargo.toml files for maximal compatibility # with all versions of Cargo and also rewrite `path` dependencies # to registry (e.g., crates.io) dependencies # # If you believe there's an error in this file please file an # issue against the rust-lang/cargo repository. If you're # editing this file be aware that the upstream Cargo.toml # will likely look very different (and much more reasonable) [package] edition = "2018" name = "serde_ignored" version = "0.1.0" authors = ["David Tolnay "] description = "Find out about keys that are ignored when deserializing data" keywords = ["serde"] categories = ["encoding"] license = "MIT OR Apache-2.0" repository = "https://github.com/dtolnay/serde-ignored" [dependencies.serde] version = "1.0" [dev-dependencies.serde_derive] version = "1.0" [dev-dependencies.serde_json] version = "1.0" [badges.travis-ci] repository = "dtolnay/serde-ignored" serde_ignored-0.1.0/LICENSE-APACHE010064400017500001750000000251371346021560000144730ustar0000000000000000 Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. 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See the License for the specific language governing permissions and limitations under the License. serde_ignored-0.1.0/LICENSE-MIT010064400017500001750000000020571346021560000141770ustar0000000000000000Copyright (c) 2014 The Rust Project Developers Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. serde_ignored-0.1.0/README.md010066400017500001750000000046671352631434300140440ustar0000000000000000# Serde ignored [![Build Status](https://api.travis-ci.org/dtolnay/serde-ignored.svg?branch=master)](https://travis-ci.org/dtolnay/serde-ignored) [![Latest Version](https://img.shields.io/crates/v/serde-ignored.svg)](https://crates.io/crates/serde-ignored) [![Rust Documentation](https://img.shields.io/badge/api-rustdoc-blue.svg)](https://docs.rs/serde_ignored) Find out about keys that are ignored when deserializing data. This crate provides a wrapper that works with any existing Serde `Deserializer` and invokes a callback on every ignored field. You can use this to warn users about extraneous keys in a config file, for example. Note that if you want unrecognized fields to be an error, consider using the `#[serde(deny_unknown_fields)]` [attribute] instead. [attribute]: https://serde.rs/attributes.html ```toml [dependencies] serde = "1.0" serde_ignored = "0.1" ``` ```rust use serde::Deserialize; use std::collections::{BTreeSet as Set, BTreeMap as Map}; #[derive(Debug, PartialEq, Deserialize)] struct Package { name: String, dependencies: Map, } #[derive(Debug, PartialEq, Deserialize)] struct Dependency { version: String, } fn main() { let j = r#"{ "name": "demo", "dependencies": { "serde": { "version": "1.0", "typo1": "" } }, "typo2": { "inner": "" }, "typo3": {} }"#; // Some Deserializer. let jd = &mut serde_json::Deserializer::from_str(j); // We will build a set of paths to the unused elements. let mut unused = Set::new(); let p: Package = serde_ignored::deserialize(jd, |path| { unused.insert(path.to_string()); }).unwrap(); // Deserialized as normal. println!("{:?}", p); // There were three ignored keys. let mut expected = Set::new(); expected.insert("dependencies.serde.typo1".to_owned()); expected.insert("typo2".to_owned()); expected.insert("typo3".to_owned()); assert_eq!(unused, expected); } ```
#### License Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions. serde_ignored-0.1.0/src/lib.rs010066400017500001750000001026261352631434300144620ustar0000000000000000//! Find out about keys that are ignored when deserializing data. This crate //! provides a wrapper that works with any existing Serde `Deserializer` and //! invokes a callback on every ignored field. //! //! You can use this to warn users about extraneous keys in a config file, for //! example. //! //! Note that if you want unrecognized fields to be an error, consider using the //! `#[serde(deny_unknown_fields)]` [attribute] instead. //! //! [attribute]: https://serde.rs/attributes.html //! //! # Example //! //! ``` //! # use serde_derive::Deserialize; //! # //! use serde::Deserialize; //! use std::collections::{BTreeSet as Set, BTreeMap as Map}; //! //! #[derive(Debug, PartialEq, Deserialize)] //! struct Package { //! name: String, //! dependencies: Map, //! } //! //! #[derive(Debug, PartialEq, Deserialize)] //! struct Dependency { //! version: String, //! } //! //! # fn try_main() -> Result<(), Box<::std::error::Error>> { //! let j = r#"{ //! "name": "demo", //! "dependencies": { //! "serde": { //! "version": "1.0", //! "typo1": "" //! } //! }, //! "typo2": { //! "inner": "" //! }, //! "typo3": {} //! }"#; //! //! // Some Deserializer. //! let jd = &mut serde_json::Deserializer::from_str(j); //! //! // We will build a set of paths to the unused elements. //! let mut unused = Set::new(); //! //! let p: Package = serde_ignored::deserialize(jd, |path| { //! unused.insert(path.to_string()); //! })?; //! //! assert_eq!(p, Package { //! name: "demo".to_owned(), //! dependencies: { //! let mut map = Map::new(); //! map.insert("serde".to_owned(), Dependency { //! version: "1.0".to_owned(), //! }); //! map //! }, //! }); //! //! assert_eq!(unused, { //! let mut expected = Set::new(); //! expected.insert("dependencies.serde.typo1".to_owned()); //! expected.insert("typo2".to_owned()); //! expected.insert("typo3".to_owned()); //! expected //! }); //! //! # Ok(()) } //! # fn main() { try_main().unwrap() } //! ``` #![doc(html_root_url = "https://docs.rs/serde_ignored/0.1.0")] use serde::de::{self, Deserialize, DeserializeSeed, Visitor}; use std::fmt::{self, Display}; /// Entry point. See crate documentation for an example. pub fn deserialize<'de, D, F, T>(deserializer: D, mut callback: F) -> Result where D: de::Deserializer<'de>, F: FnMut(Path), T: Deserialize<'de>, { T::deserialize(Deserializer::new(deserializer, &mut callback)) } /// Deserializer adapter that invokes a callback with the path to every unused /// field of the input. pub struct Deserializer<'a, 'b, D, F: 'b> { de: D, callback: &'b mut F, path: Path<'a>, } impl<'a, 'b, D, F> Deserializer<'a, 'b, D, F> where F: FnMut(Path), { // The structs in this crate all hold their closure by &mut F. If they were // to contain F by value, any method taking &mut self (for example // SeqAccess::next_element_seed) would be forced to recurse with &mut // self.callback, even if F is instantiated with a &mut already. This way // they contain &mut F and the &mut self methods can recurse with // self.callback unchanged. This avoids blowing the recursion limit in // Cargo's use of this crate. // // https://github.com/dtolnay/serde-ignored/pull/1 pub fn new(de: D, callback: &'b mut F) -> Self { Deserializer { de, callback, path: Path::Root, } } } /// Path to the current value in the input, like `dependencies.serde.typo1`. pub enum Path<'a> { Root, Seq { parent: &'a Path<'a>, index: usize }, Map { parent: &'a Path<'a>, key: String }, Some { parent: &'a Path<'a> }, NewtypeStruct { parent: &'a Path<'a> }, NewtypeVariant { parent: &'a Path<'a> }, } impl<'a> Display for Path<'a> { fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> { struct Parent<'a>(&'a Path<'a>); impl<'a> Display for Parent<'a> { fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> { match *self.0 { Path::Root => Ok(()), ref path => write!(formatter, "{}.", path), } } } match *self { Path::Root => formatter.write_str("."), Path::Seq { parent, index } => write!(formatter, "{}{}", Parent(parent), index), Path::Map { parent, ref key } => write!(formatter, "{}{}", Parent(parent), key), Path::Some { parent } | Path::NewtypeStruct { parent } | Path::NewtypeVariant { parent } => write!(formatter, "{}?", Parent(parent)), } } } /// Plain old forwarding impl except for `deserialize_ignored_any` which invokes /// the callback. impl<'a, 'b, 'de, D, F> de::Deserializer<'de> for Deserializer<'a, 'b, D, F> where D: de::Deserializer<'de>, F: FnMut(Path), { type Error = D::Error; fn deserialize_any(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_any(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_bool(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_bool(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_u8(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_u8(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_u16(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_u16(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_u32(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_u32(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_u64(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_u64(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_i8(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_i8(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_i16(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_i16(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_i32(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_i32(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_i64(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_i64(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_f32(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_f32(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_f64(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_f64(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_char(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_char(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_str(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_str(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_string(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_string(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_bytes(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_bytes(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_byte_buf(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_byte_buf(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_option(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_option(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_unit(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_unit(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_unit_struct( self, name: &'static str, visitor: V, ) -> Result where V: Visitor<'de>, { self.de .deserialize_unit_struct(name, Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_newtype_struct( self, name: &'static str, visitor: V, ) -> Result where V: Visitor<'de>, { self.de .deserialize_newtype_struct(name, Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_seq(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_seq(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_tuple(self, len: usize, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_tuple(len, Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_tuple_struct( self, name: &'static str, len: usize, visitor: V, ) -> Result where V: Visitor<'de>, { self.de .deserialize_tuple_struct(name, len, Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_map(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_map(Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_struct( self, name: &'static str, fields: &'static [&'static str], visitor: V, ) -> Result where V: Visitor<'de>, { self.de .deserialize_struct(name, fields, Wrap::new(visitor, self.callback, &self.path)) } fn deserialize_enum( self, name: &'static str, variants: &'static [&'static str], visitor: V, ) -> Result where V: Visitor<'de>, { self.de.deserialize_enum( name, variants, Wrap::new(visitor, self.callback, &self.path), ) } fn deserialize_ignored_any(self, visitor: V) -> Result where V: Visitor<'de>, { (self.callback)(self.path); self.de.deserialize_ignored_any(visitor) } fn deserialize_identifier(self, visitor: V) -> Result where V: Visitor<'de>, { self.de .deserialize_identifier(Wrap::new(visitor, self.callback, &self.path)) } } /// Wrapper that attaches context to a `Visitor`, `SeqAccess`, `EnumAccess` or /// `VariantAccess`. struct Wrap<'a, 'b, X, F: 'b> { delegate: X, callback: &'b mut F, path: &'a Path<'a>, } impl<'a, 'b, X, F> Wrap<'a, 'b, X, F> { fn new(delegate: X, callback: &'b mut F, path: &'a Path<'a>) -> Self { Wrap { delegate, callback, path, } } } /// Forwarding impl to preserve context. impl<'a, 'b, 'de, X, F> Visitor<'de> for Wrap<'a, 'b, X, F> where X: Visitor<'de>, F: FnMut(Path), { type Value = X::Value; fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { self.delegate.expecting(formatter) } fn visit_bool(self, v: bool) -> Result where E: de::Error, { self.delegate.visit_bool(v) } fn visit_i8(self, v: i8) -> Result where E: de::Error, { self.delegate.visit_i8(v) } fn visit_i16(self, v: i16) -> Result where E: de::Error, { self.delegate.visit_i16(v) } fn visit_i32(self, v: i32) -> Result where E: de::Error, { self.delegate.visit_i32(v) } fn visit_i64(self, v: i64) -> Result where E: de::Error, { self.delegate.visit_i64(v) } fn visit_u8(self, v: u8) -> Result where E: de::Error, { self.delegate.visit_u8(v) } fn visit_u16(self, v: u16) -> Result where E: de::Error, { self.delegate.visit_u16(v) } fn visit_u32(self, v: u32) -> Result where E: de::Error, { self.delegate.visit_u32(v) } fn visit_u64(self, v: u64) -> Result where E: de::Error, { self.delegate.visit_u64(v) } fn visit_f32(self, v: f32) -> Result where E: de::Error, { self.delegate.visit_f32(v) } fn visit_f64(self, v: f64) -> Result where E: de::Error, { self.delegate.visit_f64(v) } fn visit_char(self, v: char) -> Result where E: de::Error, { self.delegate.visit_char(v) } fn visit_str(self, v: &str) -> Result where E: de::Error, { self.delegate.visit_str(v) } fn visit_borrowed_str(self, v: &'de str) -> Result where E: de::Error, { self.delegate.visit_borrowed_str(v) } fn visit_string(self, v: String) -> Result where E: de::Error, { self.delegate.visit_string(v) } fn visit_unit(self) -> Result where E: de::Error, { self.delegate.visit_unit() } fn visit_none(self) -> Result where E: de::Error, { self.delegate.visit_none() } fn visit_some(self, deserializer: D) -> Result where D: de::Deserializer<'de>, { self.delegate.visit_some(Deserializer { de: deserializer, callback: self.callback, path: Path::Some { parent: self.path }, }) } fn visit_newtype_struct(self, deserializer: D) -> Result where D: de::Deserializer<'de>, { self.delegate.visit_newtype_struct(Deserializer { de: deserializer, callback: self.callback, path: Path::NewtypeStruct { parent: self.path }, }) } fn visit_seq(self, visitor: V) -> Result where V: de::SeqAccess<'de>, { self.delegate .visit_seq(SeqAccess::new(visitor, self.callback, self.path)) } fn visit_map(self, visitor: V) -> Result where V: de::MapAccess<'de>, { self.delegate .visit_map(MapAccess::new(visitor, self.callback, self.path)) } fn visit_enum(self, visitor: V) -> Result where V: de::EnumAccess<'de>, { self.delegate .visit_enum(Wrap::new(visitor, self.callback, self.path)) } fn visit_bytes(self, v: &[u8]) -> Result where E: de::Error, { self.delegate.visit_bytes(v) } fn visit_borrowed_bytes(self, v: &'de [u8]) -> Result where E: de::Error, { self.delegate.visit_borrowed_bytes(v) } fn visit_byte_buf(self, v: Vec) -> Result where E: de::Error, { self.delegate.visit_byte_buf(v) } } /// Forwarding impl to preserve context. impl<'a, 'b, 'de, X: 'a, F: 'b> de::EnumAccess<'de> for Wrap<'a, 'b, X, F> where X: de::EnumAccess<'de>, F: FnMut(Path), { type Error = X::Error; type Variant = Wrap<'a, 'b, X::Variant, F>; fn variant_seed(self, seed: V) -> Result<(V::Value, Self::Variant), X::Error> where V: DeserializeSeed<'de>, { let callback = self.callback; let path = self.path; self.delegate .variant_seed(seed) .map(move |(v, vis)| (v, Wrap::new(vis, callback, path))) } } /// Forwarding impl to preserve context. impl<'a, 'b, 'de, X, F> de::VariantAccess<'de> for Wrap<'a, 'b, X, F> where X: de::VariantAccess<'de>, F: FnMut(Path), { type Error = X::Error; fn unit_variant(self) -> Result<(), X::Error> { self.delegate.unit_variant() } fn newtype_variant_seed(self, seed: T) -> Result where T: DeserializeSeed<'de>, { let path = Path::NewtypeVariant { parent: self.path }; self.delegate .newtype_variant_seed(TrackedSeed::new(seed, self.callback, path)) } fn tuple_variant(self, len: usize, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .tuple_variant(len, Wrap::new(visitor, self.callback, self.path)) } fn struct_variant( self, fields: &'static [&'static str], visitor: V, ) -> Result where V: Visitor<'de>, { self.delegate .struct_variant(fields, Wrap::new(visitor, self.callback, self.path)) } } /// Seed that saves the string into the given optional during `visit_str` and /// `visit_string`. struct CaptureKey<'a, X> { delegate: X, key: &'a mut Option, } impl<'a, X> CaptureKey<'a, X> { fn new(delegate: X, key: &'a mut Option) -> Self { CaptureKey { delegate, key } } } /// Forwarding impl. impl<'a, 'de, X> DeserializeSeed<'de> for CaptureKey<'a, X> where X: DeserializeSeed<'de>, { type Value = X::Value; fn deserialize(self, deserializer: D) -> Result where D: de::Deserializer<'de>, { self.delegate .deserialize(CaptureKey::new(deserializer, self.key)) } } /// Forwarding impl. impl<'a, 'de, X> de::Deserializer<'de> for CaptureKey<'a, X> where X: de::Deserializer<'de>, { type Error = X::Error; fn deserialize_any(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_any(CaptureKey::new(visitor, self.key)) } fn deserialize_bool(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_bool(CaptureKey::new(visitor, self.key)) } fn deserialize_u8(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_u8(CaptureKey::new(visitor, self.key)) } fn deserialize_u16(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_u16(CaptureKey::new(visitor, self.key)) } fn deserialize_u32(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_u32(CaptureKey::new(visitor, self.key)) } fn deserialize_u64(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_u64(CaptureKey::new(visitor, self.key)) } fn deserialize_i8(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_i8(CaptureKey::new(visitor, self.key)) } fn deserialize_i16(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_i16(CaptureKey::new(visitor, self.key)) } fn deserialize_i32(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_i32(CaptureKey::new(visitor, self.key)) } fn deserialize_i64(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_i64(CaptureKey::new(visitor, self.key)) } fn deserialize_f32(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_f32(CaptureKey::new(visitor, self.key)) } fn deserialize_f64(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_f64(CaptureKey::new(visitor, self.key)) } fn deserialize_char(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_char(CaptureKey::new(visitor, self.key)) } fn deserialize_str(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_str(CaptureKey::new(visitor, self.key)) } fn deserialize_string(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_string(CaptureKey::new(visitor, self.key)) } fn deserialize_bytes(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_bytes(CaptureKey::new(visitor, self.key)) } fn deserialize_byte_buf(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_byte_buf(CaptureKey::new(visitor, self.key)) } fn deserialize_option(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_option(CaptureKey::new(visitor, self.key)) } fn deserialize_unit(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_unit(CaptureKey::new(visitor, self.key)) } fn deserialize_unit_struct( self, name: &'static str, visitor: V, ) -> Result where V: Visitor<'de>, { self.delegate .deserialize_unit_struct(name, CaptureKey::new(visitor, self.key)) } fn deserialize_newtype_struct( self, name: &'static str, visitor: V, ) -> Result where V: Visitor<'de>, { self.delegate .deserialize_newtype_struct(name, CaptureKey::new(visitor, self.key)) } fn deserialize_seq(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_seq(CaptureKey::new(visitor, self.key)) } fn deserialize_tuple(self, len: usize, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_tuple(len, CaptureKey::new(visitor, self.key)) } fn deserialize_tuple_struct( self, name: &'static str, len: usize, visitor: V, ) -> Result where V: Visitor<'de>, { self.delegate .deserialize_tuple_struct(name, len, CaptureKey::new(visitor, self.key)) } fn deserialize_map(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_map(CaptureKey::new(visitor, self.key)) } fn deserialize_struct( self, name: &'static str, fields: &'static [&'static str], visitor: V, ) -> Result where V: Visitor<'de>, { self.delegate .deserialize_struct(name, fields, CaptureKey::new(visitor, self.key)) } fn deserialize_enum( self, name: &'static str, variants: &'static [&'static str], visitor: V, ) -> Result where V: Visitor<'de>, { self.delegate .deserialize_enum(name, variants, CaptureKey::new(visitor, self.key)) } fn deserialize_ignored_any(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_ignored_any(CaptureKey::new(visitor, self.key)) } fn deserialize_identifier(self, visitor: V) -> Result where V: Visitor<'de>, { self.delegate .deserialize_identifier(CaptureKey::new(visitor, self.key)) } } /// Forwarding impl that also saves the value of integers and strings. impl<'a, 'de, X> Visitor<'de> for CaptureKey<'a, X> where X: Visitor<'de>, { type Value = X::Value; fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { self.delegate.expecting(formatter) } fn visit_bool(self, v: bool) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_bool(v) } fn visit_i8(self, v: i8) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_i8(v) } fn visit_i16(self, v: i16) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_i16(v) } fn visit_i32(self, v: i32) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_i32(v) } fn visit_i64(self, v: i64) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_i64(v) } fn visit_u8(self, v: u8) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_u8(v) } fn visit_u16(self, v: u16) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_u16(v) } fn visit_u32(self, v: u32) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_u32(v) } fn visit_u64(self, v: u64) -> Result where E: de::Error, { *self.key = Some(v.to_string()); self.delegate.visit_u64(v) } fn visit_f32(self, v: f32) -> Result where E: de::Error, { self.delegate.visit_f32(v) } fn visit_f64(self, v: f64) -> Result where E: de::Error, { self.delegate.visit_f64(v) } fn visit_char(self, v: char) -> Result where E: de::Error, { self.delegate.visit_char(v) } fn visit_str(self, v: &str) -> Result where E: de::Error, { *self.key = Some(v.to_owned()); self.delegate.visit_str(v) } fn visit_borrowed_str(self, v: &'de str) -> Result where E: de::Error, { *self.key = Some(v.to_owned()); self.delegate.visit_borrowed_str(v) } fn visit_string(self, v: String) -> Result where E: de::Error, { *self.key = Some(v.clone()); self.delegate.visit_string(v) } fn visit_unit(self) -> Result where E: de::Error, { self.delegate.visit_unit() } fn visit_none(self) -> Result where E: de::Error, { self.delegate.visit_none() } fn visit_some(self, deserializer: D) -> Result where D: de::Deserializer<'de>, { self.delegate.visit_some(deserializer) } fn visit_newtype_struct(self, deserializer: D) -> Result where D: de::Deserializer<'de>, { self.delegate.visit_newtype_struct(CaptureKey::new(deserializer, self.key)) } fn visit_seq(self, visitor: V) -> Result where V: de::SeqAccess<'de>, { self.delegate.visit_seq(visitor) } fn visit_map(self, visitor: V) -> Result where V: de::MapAccess<'de>, { self.delegate.visit_map(visitor) } fn visit_enum(self, visitor: V) -> Result where V: de::EnumAccess<'de>, { self.delegate.visit_enum(CaptureKey::new(visitor, self.key)) } fn visit_bytes(self, v: &[u8]) -> Result where E: de::Error, { self.delegate.visit_bytes(v) } fn visit_borrowed_bytes(self, v: &'de [u8]) -> Result where E: de::Error, { self.delegate.visit_borrowed_bytes(v) } fn visit_byte_buf(self, v: Vec) -> Result where E: de::Error, { self.delegate.visit_byte_buf(v) } } impl<'a, 'de, X> de::EnumAccess<'de> for CaptureKey<'a, X> where X: de::EnumAccess<'de>, { type Error = X::Error; type Variant = X::Variant; fn variant_seed(self, seed: V) -> Result<(V::Value, Self::Variant), X::Error> where V: DeserializeSeed<'de>, { self.delegate.variant_seed(CaptureKey::new(seed, self.key)) } } /// Seed used for map values, sequence elements and newtype variants to track /// their path. struct TrackedSeed<'a, X, F: 'a> { seed: X, callback: &'a mut F, path: Path<'a>, } impl<'a, X, F> TrackedSeed<'a, X, F> { fn new(seed: X, callback: &'a mut F, path: Path<'a>) -> Self { TrackedSeed { seed, callback, path, } } } impl<'a, 'de, X, F> DeserializeSeed<'de> for TrackedSeed<'a, X, F> where X: DeserializeSeed<'de>, F: FnMut(Path), { type Value = X::Value; fn deserialize(self, deserializer: D) -> Result where D: de::Deserializer<'de>, { self.seed.deserialize(Deserializer { de: deserializer, callback: self.callback, path: self.path, }) } } /// Seq visitor that tracks the index of its elements. struct SeqAccess<'a, 'b, X, F: 'b> { delegate: X, callback: &'b mut F, path: &'a Path<'a>, index: usize, } impl<'a, 'b, X, F> SeqAccess<'a, 'b, X, F> { fn new(delegate: X, callback: &'b mut F, path: &'a Path<'a>) -> Self { SeqAccess { delegate, callback, path, index: 0, } } } /// Forwarding impl to preserve context. impl<'a, 'b, 'de, X, F> de::SeqAccess<'de> for SeqAccess<'a, 'b, X, F> where X: de::SeqAccess<'de>, F: FnMut(Path), { type Error = X::Error; fn next_element_seed(&mut self, seed: T) -> Result, X::Error> where T: DeserializeSeed<'de>, { let path = Path::Seq { parent: self.path, index: self.index, }; self.index += 1; self.delegate .next_element_seed(TrackedSeed::new(seed, self.callback, path)) } fn size_hint(&self) -> Option { self.delegate.size_hint() } } /// Map visitor that captures the string value of its keys and uses that to /// track the path to its values. struct MapAccess<'a, 'b, X, F: 'b> { delegate: X, callback: &'b mut F, path: &'a Path<'a>, key: Option, } impl<'a, 'b, X, F> MapAccess<'a, 'b, X, F> { fn new(delegate: X, callback: &'b mut F, path: &'a Path<'a>) -> Self { MapAccess { delegate, callback, path, key: None, } } fn key(&mut self) -> Result where E: de::Error, { self.key.take().ok_or_else(|| E::custom("non-string key")) } } impl<'a, 'b, 'de, X, F> de::MapAccess<'de> for MapAccess<'a, 'b, X, F> where X: de::MapAccess<'de>, F: FnMut(Path), { type Error = X::Error; fn next_key_seed(&mut self, seed: K) -> Result, X::Error> where K: DeserializeSeed<'de>, { self.delegate .next_key_seed(CaptureKey::new(seed, &mut self.key)) } fn next_value_seed(&mut self, seed: V) -> Result where V: DeserializeSeed<'de>, { let path = Path::Map { parent: self.path, key: self.key()?, }; self.delegate .next_value_seed(TrackedSeed::new(seed, self.callback, path)) } fn size_hint(&self) -> Option { self.delegate.size_hint() } } serde_ignored-0.1.0/tests/test.rs010066400017500001750000000052561352631363600152530ustar0000000000000000use serde::Deserialize; use serde_derive::Deserialize; use std::collections::{BTreeMap as Map, BTreeSet as Set}; use std::iter::FromIterator; fn assert_ignored<'de, T>(json: &'de str, expected: &[&str]) -> T where T: Deserialize<'de>, { let de = &mut serde_json::Deserializer::from_str(json); let mut unused = Set::new(); let value: T = serde_ignored::deserialize(de, |path| { unused.insert(path.to_string()); }) .unwrap(); let expected = Set::from_iter(expected.into_iter().cloned().map(str::to_owned)); assert_eq!(unused, expected); value } #[derive(Debug, Deserialize)] struct V { used: (), } #[test] fn test_readme() { #[derive(Debug, PartialEq, Deserialize)] struct Package { name: String, dependencies: Map, } #[derive(Debug, PartialEq, Deserialize)] struct Dependency { version: String, } let json = r#"{ "name": "demo", "dependencies": { "serde": { "version": "1.0", "typo1": "" } }, "typo2": { "inner": "" }, "typo3": {} }"#; let ignored = &["dependencies.serde.typo1", "typo2", "typo3"]; let p: Package = assert_ignored(json, ignored); let expected = Package { name: "demo".to_owned(), dependencies: { let mut map = Map::new(); map.insert( "serde".to_owned(), Dependency { version: "1.0".to_owned(), }, ); map }, }; assert_eq!(p, expected); } #[test] fn test_int_key() { #[derive(Debug, Deserialize)] struct Test { a: Map, } let json = r#"{ "a": { "2": { "used": null, "unused": null } } }"#; let ignored = &["a.2.unused"]; assert_ignored::(json, ignored); } #[test] fn test_newtype_key() { type Test = Map; #[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Deserialize)] struct Key(&'static str); let json = r#"{ "k": { "used": null, "unused": null } }"#; let ignored = &["k.unused"]; assert_ignored::(json, ignored); } #[test] fn test_unit_variant_key() { type Test = Map; #[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Deserialize)] enum Key { First, Second, } let json = r#"{ "First": { "used": null, "unused": null } }"#; let ignored = &["First.unused"]; assert_ignored::(json, ignored); } serde_ignored-0.1.0/.cargo_vcs_info.json0000644000000001120000000000000136740ustar00{ "git": { "sha1": "2f46e83f5258621d7f3bc6c0f7b6a608780972bb" } }