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https://github.com/esphome/esphome.git
synced 2026-09-17 10:08:40 +00:00
J. Nick Koston
bfc5a210bc
Replace std::function with a lightweight type-erased Callback struct (8 bytes on 32-bit vs 16 for std::function) in CallbackManager and LazyCallbackManager. Using C++20 if constexpr, small trivially-copyable callables like [this] lambdas (81% of all callback registrations) are stored inline in the function pointer context without heap allocation. This eliminates std::function null checks (and __throw_bad_function_call) from all entity callback paths, and templatizes add_on_*_callback methods across all entity types so lambdas flow through without being wrapped in std::function first. Also converts EntityStateBase from hand-rolled nullable CallbackManager pointers to LazyCallbackManager for consistency. Measured flash savings: - ESP8266 simple: -160 B - ESP8266 ratgdo: -592 B - ESP32 IDF (large): -456 B - ESP32 IDF (minimal): -212 B
25 lines
605 B
C++
25 lines
605 B
C++
#include "button.h"
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#include "esphome/core/log.h"
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namespace esphome::button {
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static const char *const TAG = "button";
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// Function implementation of LOG_BUTTON macro to reduce code size
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void log_button(const char *tag, const char *prefix, const char *type, Button *obj) {
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if (obj == nullptr) {
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return;
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}
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ESP_LOGCONFIG(tag, "%s%s '%s'", prefix, type, obj->get_name().c_str());
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LOG_ENTITY_ICON(tag, prefix, *obj);
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}
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void Button::press() {
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ESP_LOGD(TAG, "'%s' Pressed.", this->get_name().c_str());
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this->press_action();
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this->press_callback_.call();
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}
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} // namespace esphome::button
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