Struct ErrorTree 

pub struct ErrorTree {
    pub messages: Vec<String>,
    pub children: HashMap<String, ErrorTree>,
}

Hierarchical error aggregator used by validation to keep nested context.

Fields

messages: Vec<String>

Errors at the current level.

children: HashMap<String, ErrorTree>

Child errors indexed by field/key.

Implementations

impl ErrorTree

pub fn new() -> ErrorTree

Create an empty error tree with no messages or children.

pub fn collect<I>(iter: I) -> Result<(), ErrorTree>

where I: IntoIterator<Item = Result<(), ErrorTree>>,

Merge a sequence of Result values, collecting every ErrorTree into one.

pub fn add<M>(&mut self, message: M)

where M: ToString,

Add an error message to the current level.

pub fn add_result<M>(&mut self, error: Result<(), M>)

where M: ToString,

Push an error message only when the supplied result is Err.

pub fn addf(&mut self, args: Arguments<'_>)

Format and append an error message.

pub fn add_for<K, M>(&mut self, key: K, message: M)

where K: ToString, M: ToString,

Add an error message under a specific child key, creating nodes as needed.

pub fn merge(&mut self, other: ErrorTree)

Merge another ErrorTree into this one, combining children recursively.

pub fn is_empty(&self) -> bool

Check if there are any errors.

pub fn flatten_ref(&self) -> Vec<(String, String)>

Flatten the error hierarchy without consuming self.

pub fn result(self) -> Result<(), ErrorTree>

Consume self and return Ok(()) if there are no errors, or Err(self) otherwise.

Trait Implementations

impl CandidType for ErrorTree

fn _ty() -> Type

fn id() -> TypeId

fn idl_serialize<__S>( &self, __serializer: __S, ) -> Result<(), <__S as Serializer>::Error>

where __S: Serializer,

fn ty() -> Type

impl Debug for ErrorTree

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for ErrorTree

fn default() -> ErrorTree

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ErrorTree

fn deserialize<__D>( __deserializer: __D, ) -> Result<ErrorTree, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ErrorTree

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl From<&str> for ErrorTree

fn from(err: &str) -> ErrorTree

Converts to this type from the input type.

impl From<String> for ErrorTree

fn from(s: String) -> ErrorTree

Converts to this type from the input type.

impl PartialEq for ErrorTree

fn eq(&self, other: &ErrorTree) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ErrorTree

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for ErrorTree

impl StructuralPartialEq for ErrorTree