New atom table implementation

CHANGELOG.md

@@ -21,6 +21,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - New gpio driver for STM32 with nif and port support for read and write functions.
 - Added support for interrupts to STM32 GPIO port driver.
 
+## Changed
+- New atom table, which uses less memory, has improved performances and better code.
+
 ## [0.6.0-alpha.1] - 2023-10-09
 
 ### Added

src/libAtomVM/CMakeLists.txt

@@ -24,6 +24,7 @@ project (libAtomVM)
 set(HEADER_FILES
     atom.h
     atomshashtable.h
+    atom_table.h
     avmpack.h
     bif.h
     bitstring.h
@@ -69,6 +70,7 @@ set(HEADER_FILES
 set(SOURCE_FILES
     atom.c
     atomshashtable.c
+    atom_table.c
     avmpack.c
     bif.c
     bitstring.c

src/libAtomVM/atom.c

@@ -30,7 +30,7 @@ void atom_string_to_c(AtomString atom_string, char *buf, size_t bufsize)
 {
     size_t atom_len = *((const uint8_t *) atom_string);
 
-    if (bufsize < atom_len) {
+    if (bufsize <= atom_len) {
         atom_len = bufsize - 1;
     }
     memcpy(buf, ((const uint8_t *) atom_string) + 1, atom_len);