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Package json

func SyntaxErrorOffset ¶

func SyntaxErrorOffset(err error) (isSyntaxError bool, offset int64)

SyntaxErrorOffset returns if the specified error is a syntax error produced by encoding/json or this package.

func UnmarshalCaseSensitivePreserveInts ¶

func UnmarshalCaseSensitivePreserveInts(data []byte, v interface{}) error

UnmarshalCaseSensitivePreserveInts parses the JSON-encoded data and stores the result in the value pointed to by v.

UnmarshalCaseSensitivePreserveInts matches the behavior of encoding/json#Unmarshal, with the following changes:

• When unmarshaling into a struct, JSON keys must case-sensitively match `json` tag names (for tagged struct fields) or struct field names (for untagged struct fields), or they are treated as unknown fields and discarded.
• When unmarshaling a number into an interface value, it is unmarshaled as an int64 if the JSON data does not contain a "." character and parses as an integer successfully and does not overflow int64. Otherwise, the number is unmarshaled as a float64.
• If a syntax error is returned, it will not be of type encoding/json#SyntaxError, but will be recognizeable by this package's IsSyntaxError() function.

func UnmarshalStrict ¶

func UnmarshalStrict(data []byte, v interface{}, strictOptions ...StrictOption) (strictErrors []error, err error)

UnmarshalStrict parses the JSON-encoded data and stores the result in the value pointed to by v. Unmarshaling is performed identically to UnmarshalCaseSensitivePreserveInts(), returning an error on failure.

If parsing succeeds, additional strict checks as selected by `strictOptions` are performed and a list of the strict failures (if any) are returned. If no `strictOptions` are selected, all supported strict checks are performed.

Strict errors returned will implement the FieldError interface for the specific erroneous fields.

Currently supported strict checks are: - DisallowDuplicateFields: ensure the data contains no duplicate fields - DisallowUnknownFields: ensure the data contains no unknown fields (when decoding into typed structs)

Additional strict checks may be added in the future.

Note that the strict checks do not change what is stored in v. For example, if duplicate fields are present, they will be parsed and stored in v, and errors about the duplicate fields will be returned in the strict error list.

type Decoder ¶

Decoder describes the decoding API exposed by `encoding/json#Decoder`

type Decoder interface {
    Decode(v interface{}) error
    Buffered() io.Reader
    Token() (gojson.Token, error)
    More() bool
    InputOffset() int64
}

func NewDecoderCaseSensitivePreserveInts ¶

func NewDecoderCaseSensitivePreserveInts(r io.Reader) Decoder

NewDecoderCaseSensitivePreserveInts returns a decoder that matches the behavior of encoding/json#NewDecoder, with the following changes:

• When unmarshaling into a struct, JSON keys must case-sensitively match `json` tag names (for tagged struct fields) or struct field names (for untagged struct fields), or they are treated as unknown fields and discarded.
• When unmarshaling a number into an interface value, it is unmarshaled as an int64 if the JSON data does not contain a "." character and parses as an integer successfully and does not overflow int64. Otherwise, the number is unmarshaled as a float64.
• If a syntax error is returned, it will not be of type encoding/json#SyntaxError, but will be recognizeable by this package's IsSyntaxError() function.

type FieldError ¶

FieldError is an error that provides access to the path of the erroneous field

type FieldError interface {
    error
    // FieldPath provides the full path of the erroneous field within the json object.
    FieldPath() string
    // SetFieldPath updates the path of the erroneous field output in the error message.
    SetFieldPath(path string)
}

type StrictOption ¶

type StrictOption int

const (
    // DisallowDuplicateFields returns strict errors if data contains duplicate fields
    DisallowDuplicateFields StrictOption = 1

    // DisallowUnknownFields returns strict errors if data contains unknown fields when decoding into typed structs
    DisallowUnknownFields StrictOption = 2
)

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