Module message 

The core Message trait and DecodeOptions builder.

Every generated message type implements Message, which provides encode/decode/merge methods and a two-pass serialization model (compute_size populates a SizeCache, write_to consumes it) that avoids the exponential-time problem affecting naïve length-delimited encoders.

Structs

DecodeContext

Per-decode limits threaded through every merge call.

DecodeOptions

Options for configuring message decoding behavior.

Constants

DEFAULT_ELEMENT_MEMORY_LIMIT

Default element-memory budget: 32 MiB per top-level decode.

DEFAULT_UNKNOWN_FIELD_LIMIT

Default limit on unknown fields decoded per top-level decode: 1,000,000.

MAX_MESSAGE_BYTES

Maximum encoded size of a protobuf message: 2 GiB − 1 (0x7FFF_FFFF).

RECURSION_LIMIT

Default recursion depth limit for decoding nested messages.

Traits

Message

The core trait implemented by all protobuf message types.

MessageName

Compile-time access to a generated message’s protobuf identifiers.

Functions

checked_encode_size

Validate a computed encode size against MAX_MESSAGE_BYTES.

saturate_size

Saturate a u64 size accumulator to u32.