J. Nick Koston af4579ca87 [api] Write protobuf encode output to pre-sized buffer directly ...

ProtoSize::calculate_size() already computes the exact encoded size
before encode() runs and is the boundary validation. The buffer is
pre-sized to match. Since the buffer size is always correct,
push_back() capacity checks on every byte are redundant overhead.

Rename ProtoWriteBuffer to ProtoWritePreSizedBuffer to document the
contract. Write through a raw uint8_t* pointer instead of push_back().
Pre-resize the buffer to include payload space before encoding.

Add ESPHOME_DEBUG_API bounds checks to validate writes stay within the
pre-sized region during development and integration testing.

2026-02-16 14:40:55 -06:00

..

api_protobuf.py

[api] Write protobuf encode output to pre-sized buffer directly

2026-02-16 14:40:55 -06:00