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Code Issues Releases Wiki Activity

Reduce API flash usage by eliminating unnecessary template instantiations (#9452)

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This commit is contained in:
J. Nick Koston
2025-07-11 17:56:08 -10:00
committed by GitHub
parent 79b5fcf31a
commit ca5ee0ce07
3 changed files with 259 additions and 198 deletions
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360
esphome/components/api/api_pb2.cpp
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File diff suppressed because it is too large Load Diff

55
esphome/components/api/proto.h
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@@ -59,7 +59,6 @@ class ProtoVarInt {
uint32_t as_uint32() const { return this->value_; }
uint64_t as_uint64() const { return this->value_; }
bool as_bool() const { return this->value_; }
template<typename T> T as_enum() const { return static_cast<T>(this->as_uint32()); }
int32_t as_int32() const {
// Not ZigZag encoded
return static_cast<int32_t>(this->as_int64());
@@ -133,15 +132,24 @@ class ProtoVarInt {
uint64_t value_;
};
// Forward declaration for decode_to_message and encode_to_writer
class ProtoMessage;
class ProtoLengthDelimited {
public:
explicit ProtoLengthDelimited(const uint8_t *value, size_t length) : value_(value), length_(length) {}
std::string as_string() const { return std::string(reinterpret_cast<const char *>(this->value_), this->length_); }
template<class C> C as_message() const {
auto msg = C();
msg.decode(this->value_, this->length_);
return msg;
}
/**
* Decode the length-delimited data into an existing ProtoMessage instance.
*
* This method allows decoding without templates, enabling use in contexts
* where the message type is not known at compile time. The ProtoMessage's
* decode() method will be called with the raw data and length.
*
* @param msg The ProtoMessage instance to decode into
*/
void decode_to_message(ProtoMessage &msg) const;
protected:
const uint8_t *const value_;
@@ -263,9 +271,6 @@ class ProtoWriteBuffer {
this->write((value >> 48) & 0xFF);
this->write((value >> 56) & 0xFF);
}
template<typename T> void encode_enum(uint32_t field_id, T value, bool force = false) {
this->encode_uint32(field_id, static_cast<uint32_t>(value), force);
}
void encode_float(uint32_t field_id, float value, bool force = false) {
if (value == 0.0f && !force)
return;
@@ -306,18 +311,7 @@ class ProtoWriteBuffer {
}
this->encode_uint64(field_id, uvalue, force);
}
template<class C> void encode_message(uint32_t field_id, const C &value, bool force = false) {
this->encode_field_raw(field_id, 2); // type 2: Length-delimited message
size_t begin = this->buffer_->size();
value.encode(*this);
const uint32_t nested_length = this->buffer_->size() - begin;
// add size varint
std::vector<uint8_t> var;
ProtoVarInt(nested_length).encode(var);
this->buffer_->insert(this->buffer_->begin() + begin, var.begin(), var.end());
}
void encode_message(uint32_t field_id, const ProtoMessage &value, bool force = false);
std::vector<uint8_t> *get_buffer() const { return buffer_; }
protected:
@@ -345,6 +339,25 @@ class ProtoMessage {
virtual bool decode_64bit(uint32_t field_id, Proto64Bit value) { return false; }
};
// Implementation of encode_message - must be after ProtoMessage is defined
inline void ProtoWriteBuffer::encode_message(uint32_t field_id, const ProtoMessage &value, bool force) {
this->encode_field_raw(field_id, 2); // type 2: Length-delimited message
size_t begin = this->buffer_->size();
value.encode(*this);
const uint32_t nested_length = this->buffer_->size() - begin;
// add size varint
std::vector<uint8_t> var;
ProtoVarInt(nested_length).encode(var);
this->buffer_->insert(this->buffer_->begin() + begin, var.begin(), var.end());
}
// Implementation of decode_to_message - must be after ProtoMessage is defined
inline void ProtoLengthDelimited::decode_to_message(ProtoMessage &msg) const {
msg.decode(this->value_, this->length_);
}
template<typename T> const char *proto_enum_to_string(T value);
class ProtoService {