Struct serde_json::error::Error [] [src]

pub struct Error { /* fields omitted */ }

This type represents all possible errors that can occur when serializing or deserializing JSON data.

Methods

impl Error
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One-based line number at which the error was detected.

Characters in the first line of the input (before the first newline character) are in line 1.

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One-based column number at which the error was detected.

The first character in the input and any characters immediately following a newline character are in column 1.

Note that errors may occur in column 0, for example if a read from an IO stream fails immediately following a previously read newline character.

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Categorizes the cause of this error.

  • Category::Io - failure to read or write bytes on an IO stream
  • Category::Syntax - input that is not syntactically valid JSON
  • Category::Data - input data that is semantically incorrect
  • Category::Eof - unexpected end of the input data

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Returns true if this error was caused by a failure to read or write bytes on an IO stream.

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Returns true if this error was caused by input that was not syntactically valid JSON.

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Returns true if this error was caused by input data that was semantically incorrect.

For example, JSON containing a number is semantically incorrect when the type being deserialized into holds a String.

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Returns true if this error was caused by prematurely reaching the end of the input data.

Callers that process streaming input may be interested in retrying the deserialization once more data is available.

Trait Implementations

impl From<Error> for Error
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Convert a serde_json::Error into an io::Error.

JSON syntax and data errors are turned into InvalidData IO errors. EOF errors are turned into UnexpectedEof IO errors.

use std::io;

enum MyError {
    Io(io::Error),
    Json(serde_json::Error),
}

impl From<serde_json::Error> for MyError {
    fn from(err: serde_json::Error) -> MyError {
        use serde_json::error::Category;
        match err.classify() {
            Category::Io => {
                MyError::Io(err.into())
            }
            Category::Syntax | Category::Data | Category::Eof => {
                MyError::Json(err)
            }
        }
    }
}

impl Error for Error
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A short description of the error. Read more

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The lower-level cause of this error, if any. Read more

impl Display for Error
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Formats the value using the given formatter. Read more

impl Debug for Error
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Formats the value using the given formatter. Read more

impl Error for Error
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Raised when there is general error when deserializing a type. Read more

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Raised when a Deserialize receives a type different from what it was expecting. Read more

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Raised when a Deserialize receives a value of the right type but that is wrong for some other reason. Read more

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Raised when deserializing a sequence or map and the input data contains too many or too few elements. Read more

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Raised when a Deserialize enum type received a variant with an unrecognized name. Read more

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Raised when a Deserialize struct type received a field with an unrecognized name. Read more

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Raised when a Deserialize struct type expected to receive a required field with a particular name but that field was not present in the input. Read more

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Raised when a Deserialize struct type received more than one of the same field. Read more

impl Error for Error
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Used when a [Serialize] implementation encounters any error while serializing a type. Read more