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[core] Replace std::pair with purpose-built named structs for component metadata (#10984)

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This commit is contained in:
J. Nick Koston
2025-10-05 15:38:58 -05:00
committed by GitHub
parent 120a445abf
commit 84c3cf5f17
1 changed files with 28 additions and 18 deletions
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46
esphome/core/component.cpp
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@@ -33,12 +33,22 @@ static const char *const TAG = "component";
// Using namespace-scope static to avoid guard variables (saves 16 bytes total)
// This is safe because ESPHome is single-threaded during initialization
namespace {
struct ComponentErrorMessage {
const Component *component;
const char *message;
};
struct ComponentPriorityOverride {
const Component *component;
float priority;
};
// Error messages for failed components
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
std::unique_ptr<std::vector<std::pair<const Component *, const char *>>> component_error_messages;
std::unique_ptr<std::vector<ComponentErrorMessage>> component_error_messages;
// Setup priority overrides - freed after setup completes
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
std::unique_ptr<std::vector<std::pair<const Component *, float>>> setup_priority_overrides;
std::unique_ptr<std::vector<ComponentPriorityOverride>> setup_priority_overrides;
} // namespace
namespace setup_priority {
@@ -134,9 +144,9 @@ void Component::call_dump_config() {
// Look up error message from global vector
const char *error_msg = nullptr;
if (component_error_messages) {
for (const auto &pair : *component_error_messages) {
if (pair.first == this) {
error_msg = pair.second;
for (const auto &entry : *component_error_messages) {
if (entry.component == this) {
error_msg = entry.message;
break;
}
}
@@ -306,17 +316,17 @@ void Component::status_set_error(const char *message) {
if (message != nullptr) {
// Lazy allocate the error messages vector if needed
if (!component_error_messages) {
component_error_messages = std::make_unique<std::vector<std::pair<const Component *, const char *>>>();
component_error_messages = std::make_unique<std::vector<ComponentErrorMessage>>();
}
// Check if this component already has an error message
for (auto &pair : *component_error_messages) {
if (pair.first == this) {
pair.second = message;
for (auto &entry : *component_error_messages) {
if (entry.component == this) {
entry.message = message;
return;
}
}
// Add new error message
component_error_messages->emplace_back(this, message);
component_error_messages->emplace_back(ComponentErrorMessage{this, message});
}
}
void Component::status_clear_warning() {
@@ -356,9 +366,9 @@ float Component::get_actual_setup_priority() const {
// Check if there's an override in the global vector
if (setup_priority_overrides) {
// Linear search is fine for small n (typically < 5 overrides)
for (const auto &pair : *setup_priority_overrides) {
if (pair.first == this) {
return pair.second;
for (const auto &entry : *setup_priority_overrides) {
if (entry.component == this) {
return entry.priority;
}
}
}
@@ -367,21 +377,21 @@ float Component::get_actual_setup_priority() const {
void Component::set_setup_priority(float priority) {
// Lazy allocate the vector if needed
if (!setup_priority_overrides) {
setup_priority_overrides = std::make_unique<std::vector<std::pair<const Component *, float>>>();
setup_priority_overrides = std::make_unique<std::vector<ComponentPriorityOverride>>();
// Reserve some space to avoid reallocations (most configs have < 10 overrides)
setup_priority_overrides->reserve(10);
}
// Check if this component already has an override
for (auto &pair : *setup_priority_overrides) {
if (pair.first == this) {
pair.second = priority;
for (auto &entry : *setup_priority_overrides) {
if (entry.component == this) {
entry.priority = priority;
return;
}
}
// Add new override
setup_priority_overrides->emplace_back(this, priority);
setup_priority_overrides->emplace_back(ComponentPriorityOverride{this, priority});
}
bool Component::has_overridden_loop() const {