From 2c007a8f94d65dc40f638b284db7e374a58b632f Mon Sep 17 00:00:00 2001
From: Tom Willemse
Date: Thu, 8 Jul 2021 02:24:24 -0700
Subject: Chapter 14.1-6

---
 clox/src/chunk.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 clox/src/chunk.c

(limited to 'clox/src/chunk.c')

diff --git a/clox/src/chunk.c b/clox/src/chunk.c
new file mode 100644
index 0000000..f368dec
--- /dev/null
+++ b/clox/src/chunk.c
@@ -0,0 +1,37 @@
+#include <stdlib.h>
+
+#include "chunk.h"
+#include "memory.h"  
+
+void initChunk(Chunk* chunk) {
+  chunk->count = 0;
+  chunk->capacity = 0;
+  chunk->code = NULL;
+  chunk->lines = NULL;
+  initValueArray(&chunk->constants);
+}
+
+void freeChunk(Chunk* chunk) {
+  FREE_ARRAY(uint8_t, chunk->code, chunk->capacity);
+  FREE_ARRAY(int, chunk->lines, chunk->capacity);
+  freeValueArray(&chunk->constants);
+  initChunk(chunk);
+}
+
+void writeChunk(Chunk* chunk, uint8_t byte, int line) {
+  if (chunk->capacity < chunk->count + 1) {
+    int oldCapacity = chunk->capacity;
+    chunk->capacity = GROW_CAPACITY(oldCapacity);
+    chunk->code = GROW_ARRAY(uint8_t, chunk->code, oldCapacity, chunk->capacity);
+    chunk->lines = GROW_ARRAY(int, chunk->lines, oldCapacity, chunk->capacity);
+  }
+
+  chunk->code[chunk->count] = byte;
+  chunk->lines[chunk->count] = line;
+  chunk->count++;
+}
+
+int addConstant(Chunk* chunk, Value value) {
+  writeValueArray(&chunk->constants, value);
+  return chunk->constants.count - 1;
+}
-- 
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