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This commit is contained in:
J. Nick Koston
2026-01-30 22:00:47 -06:00
parent 8b3f020dba
commit 726c5daa74
1 changed files with 7 additions and 5 deletions
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12
esphome/core/progmem.h
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@@ -77,6 +77,8 @@ template<FixedString... Strs> struct ProgmemStringTable {
/// Generate offset table at compile time (uint8_t limits blob to 255 bytes)
static constexpr auto make_offsets() {
static_assert(COUNT > 0, "PROGMEM_STRING_TABLE must contain at least one string");
static_assert(COUNT <= 255, "PROGMEM_STRING_TABLE supports at most 255 strings with uint8_t indices");
static_assert(BLOB_SIZE <= 255, "PROGMEM_STRING_TABLE blob exceeds 255 bytes; use fewer/shorter strings");
std::array<uint8_t, COUNT> result{};
size_t pos = 0, idx = 0;
@@ -92,20 +94,20 @@ struct LogString;
/// Creates: Name::get_progmem_str(index), Name::get_log_str(index)
#define PROGMEM_STRING_TABLE(Name, ...) \
struct Name { \
using Table = ProgmemStringTable<__VA_ARGS__>; \
using Table = ::esphome::ProgmemStringTable<__VA_ARGS__>; \
static constexpr size_t COUNT = Table::COUNT; \
static constexpr size_t BLOB_SIZE = Table::BLOB_SIZE; \
static constexpr auto BLOB PROGMEM = Table::make_blob(); \
static constexpr auto OFFSETS PROGMEM = Table::make_offsets(); \
static ProgmemStr get_progmem_str(uint8_t index) { \
static ::esphome::ProgmemStr get_progmem_str(uint8_t index) { \
if (index >= COUNT) \
return nullptr; \
return reinterpret_cast<ProgmemStr>(&BLOB[progmem_read_byte(&OFFSETS[index])]); \
return reinterpret_cast<::esphome::ProgmemStr>(&BLOB[::esphome::progmem_read_byte(&OFFSETS[index])]); \
} \
static const LogString *get_log_str(uint8_t index) { \
static const ::esphome::LogString *get_log_str(uint8_t index) { \
if (index >= COUNT) \
return nullptr; \
return reinterpret_cast<const LogString *>(&BLOB[progmem_read_byte(&OFFSETS[index])]); \
return reinterpret_cast<const ::esphome::LogString *>(&BLOB[::esphome::progmem_read_byte(&OFFSETS[index])]); \
} \
}