From 50c928d224bff0af322f23a7d2b842cd54aa2e68 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sat, 18 Jan 2020 10:01:27 +0100
Subject: Start on bytecode, move object files to build directory

---
 src/std/buffer.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 src/std/buffer.c

(limited to 'src/std')

diff --git a/src/std/buffer.c b/src/std/buffer.c
new file mode 100644
index 0000000..3fc5184
--- /dev/null
+++ b/src/std/buffer.c
@@ -0,0 +1,42 @@
+#include "../../include/std/buffer.h"
+#include <stdlib.h>
+#include <string.h>
+
+void tsl_buffer_init(TslBuffer *self) {
+    self->data = NULL;
+    self->size = 0;
+    self->capacity = 0;
+}
+
+void tsl_buffer_deinit(TslBuffer *self) {
+    free(self->data);
+}
+
+static int tsl_buffer_ensure_capacity(TslBuffer *self, size_t new_size) {
+    void *new_ptr;
+    if(new_size <= self->capacity)
+        return 1;
+    
+    if(self->capacity != 0) {
+        size_t new_capacity = self->capacity;
+        while(new_capacity < new_size) {
+            new_capacity *= 2;
+        }
+        new_size = new_capacity;
+    }
+    new_ptr = realloc(self->data, new_size);
+    if(!new_ptr)
+        return 0;
+
+    self->data = new_ptr;
+    self->capacity = new_size;
+    return 1;
+}
+
+int tsl_buffer_append(TslBuffer *self, void *data, size_t size) {
+    if(!tsl_buffer_ensure_capacity(self, self->size + size))
+        return 1;
+    memcpy((char*)self->data + self->size, data, size);
+    self->size += size;
+    return 0;
+}
-- 
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