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-rw-r--r--lib/darr.h19
-rw-r--r--todo.org2
2 files changed, 18 insertions, 3 deletions
diff --git a/lib/darr.h b/lib/darr.h
index 02938da..aa37d27 100644
--- a/lib/darr.h
+++ b/lib/darr.h
@@ -18,14 +18,29 @@
#include "./base.h"
+/**
+ * A dynamically sized buffer of bytes which may be used for a
+ * variety of purposes.
+ * @prop data: Buffer of bytes (may be reallocated)
+ * @prop used: Number of bytes currently used
+ * @prop available: Number of bytes currently allocated
+ */
typedef struct
{
byte *data;
size_t used, available;
} darr_t;
-#define DARR_DEFAULT_SIZE 8
-#define DARR_REALLOC_MULT 1.5
+/* Some useful constants for dynamic array work. */
+#define DARR_DEFAULT_SIZE 8
+#define DARR_REALLOC_MULT 1.5
+
+/** Get the INDth item in a darr, where the buffer of bytes is
+ * considerd an array of type TYPE.
+ * Unsafe operation as safety checks are not done (in particular if
+ * the dynamic array has IND items or is big enough to store an
+ * element of TYPE) so it is presumed the caller will.
+ */
#define DARR_AT(TYPE, DARR_DATA, IND) ((TYPE *)(DARR_DATA))[(IND)]
void darr_init(darr_t *, size_t);
diff --git a/todo.org b/todo.org
index bf15bb2..82beb04 100644
--- a/todo.org
+++ b/todo.org
@@ -6,7 +6,7 @@
** TODO Comment coverage [0%]
*** WIP Lib [25%]
**** DONE lib/base.h
-**** TODO lib/darr.h
+**** WIP lib/darr.h
**** TODO lib/heap.h
**** TODO lib/inst.h
*** TODO ASM [0%]