CborSimpleCodec class

A simple codec for CBOR, using CborSimpleEncoder and CborSimpleDecoder.

To see how CBOR values are transformed from and into objects, verify the documentation of both CborValue.CborValue and CborValue.toObject.

JavaScript (dart2js) Limitations

On JavaScript (dart2js), there is no distinction between integer and floating-point numbers at the type level. All numbers are IEEE 754 doubles. This means:

• 0.0 is int returns true on JS but false on native/WASM platforms
• Integer-valued doubles like 1.0, -4.0, 65504.0 are encoded as CBOR integers instead of CBOR floats
• Very large doubles (e.g., 1.0e+300) may lose precision when treated as integers

Note: This limitation does not apply to dart2wasm, which correctly distinguishes between integers and floats.

Workaround: To ensure consistent float encoding across all platforms, use the advanced API with explicit types:

// Instead of:
cbor.encode(1.0);  // Encoded as int on JS, float on native/WASM

// Use:
cborEncode(CborFloat(1.0));  // Always encoded as float

Inheritance

• Object
• Codec<Object?, List<int>>
• CborSimpleCodec

Constructors

CborSimpleCodec({bool encodeDateTimeEpoch = false, bool parseDateTime = true, bool decodeBase64 = true, bool parseUri = true, Object? toEncodable(dynamic object)?})

Create a CBOR simple codec.

const

Properties

decoder → CborSimpleDecoder

Returns the decoder of this, converting from T to S.

no setter, override

encoder → CborSimpleEncoder

Returns the encoder from S to T.

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

inverted → Codec<List<int>, Object?>

Inverts this.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

decode(List<int> encoded, {bool? parseDateTime, bool? decodeBase64, bool? parseUri}) → Object?

Decodes encoded data.

override

encode(Object? input, {bool? dateTimeEpoch, Object? toEncodable(dynamic object)?}) → List<int>

Encodes input.

override

fuse<R>(Codec<List<int>, R> other) → Codec<Object?, R>

Fuses this with other.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited