Finish Chapter 14

Implements code chunks, a couple of basic opcodes, constants, and
basic execution of those opcodes.

Signed-off-by: Daniel Henry <iamdanhenry@gmail.com>

include/chunk.h

@@ -0,0 +1,25 @@
+#ifndef clox_chunk_h
+#define clox_chunk_h
+
+#include "common.h"
+#include "value.h"
+
+typedef enum {
+  OP_CONSTANT,
+  OP_RETURN,
+} OpCode;
+
+typedef struct {
+  int count;
+  int capacity;
+  uint8_t *code;
+  int *lines;
+  ValueArray constants;
+} Chunk;
+
+void initChunk(Chunk *chunk);
+void freeChunk(Chunk *chunk);
+void writeChunk(Chunk *chunk, uint8_t byte, int line);
+int addConstant(Chunk *chunk, Value value);
+
+#endif /* clox_chunk_h */

include/common.h

@@ -0,0 +1,8 @@
+#ifndef clox_common_h
+#define clox_common_h
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#endif

include/debug.h

@@ -0,0 +1,9 @@
+#ifndef clox_debug_h
+#define clox_debug_h
+
+#include "chunk.h"
+
+void disassembleChunk(Chunk *chunk, const char *name);
+int disassembleInstruction(Chunk *chunk, int offset);
+
+#endif /* clox_debug_h */

include/memory.h

@@ -0,0 +1,15 @@
+#ifndef clox_memory_h
+#define clox_memory_h
+
+#include "common.h"
+
+#define GROW_CAPACITY(capacity) ((capacity) < 8 ? 8 : (capacity) * 2)
+#define GROW_ARRAY(type, pointer, oldCount, newCount)                          \
+  (type *)reallocate(pointer, sizeof(type) * (oldCount),                       \
+                     sizeof(type) * (newCount))
+#define FREE_ARRAY(type, pointer, oldCount)                                    \
+  reallocate(pointer, sizeof(type) * oldCount, 0);
+
+void *reallocate(void *pointer, size_t oldSize, size_t newSize);
+
+#endif /* clox_memory_h */

include/value.h

@@ -0,0 +1,19 @@
+#ifndef clox_value_h
+#define clox_value_h
+
+#include "common.h"
+
+typedef double Value;
+
+typedef struct {
+  int capacity;
+  int count;
+  Value *values;
+} ValueArray;
+
+void initValueArray(ValueArray *array);
+void writeValueArray(ValueArray *array, Value value);
+void freeValueArray(ValueArray *array);
+void printValue(Value value);
+
+#endif /* clox_value_h */