lbr_prelude/
error.rs

1//! Common error type
2use serde_json::Value;
3use thiserror;
4
5/// Json types corresponding to `serde_json::Value`
6#[derive(Debug)]
7pub enum JsonType {
8    Null,
9    Bool,
10    Number,
11    String,
12    Array,
13    Object,
14}
15
16impl From<&Value> for JsonType {
17    fn from(value: &Value) -> JsonType {
18        match value {
19            Value::Null => JsonType::Null,
20            Value::Bool(_) => JsonType::Bool,
21            Value::Number(_) => JsonType::Number,
22            Value::String(_) => JsonType::String,
23            Value::Array(_) => JsonType::Array,
24            Value::Object(_) => JsonType::Object,
25        }
26    }
27}
28
29/// Error type representing Json conversion errors
30#[derive(thiserror::Error, Debug)]
31pub enum Error {
32    #[error("Malformed JSON string, unable to parse")]
33    MalformedJson { source: serde_json::Error },
34    #[error("{parser:?} > Expected a JSON type: {wanted:?}, but got a JSON type: {got:?}")]
35    UnexpectedJsonType {
36        got: JsonType,
37        wanted: JsonType,
38        parser: String,
39    },
40    #[error("{parser:?} > Expected a JSON type as {wanted:?}, but got {got:?}")]
41    UnexpectedJsonInvariant {
42        got: String,
43        wanted: String,
44        parser: String,
45    },
46    #[error(
47        "{parser:?} > Expected a field name in a JSON Object: {wanted:?}, but got fields named {got:?}"
48    )]
49    UnexpectedFieldName {
50        got: Vec<String>,
51        wanted: String,
52        parser: String,
53    },
54    #[error(
55        "{parser:?} > Expected a JSON Array with {wanted:?} elements, but got {got:?} elements"
56    )]
57    UnexpectedArrayLength {
58        got: usize,
59        wanted: usize,
60        parser: String,
61    },
62    #[error("Some internal error happened: {0}")]
63    InternalError(String),
64}
lbr_prelude/error.rs

lbr_prelude/
error.rs
