diff --git a/build.zig b/build.zig
index af7ed4a..253b34e 100644
--- a/build.zig
+++ b/build.zig
@@ -20,6 +20,7 @@ pub fn build(b: *std.Build) void {
 			"src/helper.c",
 			"src/lexer.c",
 			"src/parser.c",
+			"src/compiler.c",
 			"src/main.c",
 		}
 	});
diff --git a/src/compiler.c b/src/compiler.c
new file mode 100644
index 0000000..e69de29
diff --git a/src/compiler.h b/src/compiler.h
new file mode 100644
index 0000000..dda1b5b
--- /dev/null
+++ b/src/compiler.h
@@ -0,0 +1,56 @@
+#include "types.h"
+
+typedef enum noomC_InstrType : unsigned char {
+	NOOMC_INSTR_NOP = 0,
+	NOOMC_INSTR_LOADC,
+	NOOMC_INSTR_COPY,
+	
+	NOOMC_INSTR_JMP,
+	NOOMC_INSTR_JC,
+
+
+	NOOMC_INSTR_ADD,
+	NOOMC_INSTR_SUB,
+	NOOMC_INSTR_NEG,
+	NOOMC_INSTR_MUL,
+	NOOMC_INSTR_DIV,
+	NOOMC_INSTR_MOD,
+	NOOMC_INSTR_FLOOR_DIV,
+	NOOMC_INSTR_POW,
+
+	NOOMC_INSTR_EQ,
+	NOOMC_INSTR_NEQ,
+	NOOMC_INSTR_LT,
+	NOOMC_INSTR_LTE,
+	NOOMC_INSTR_GT,
+	NOOMC_INSTR_GTE,
+
+	NOOMC_INSTR_NOT,
+
+	NOOMC_INSTR_BAND,
+	NOOMC_INSTR_BOR,
+	NOOMC_INSTR_BXOR,
+	NOOMC_INSTR_BNOT,
+	NOOMC_INSTR_LSHIFT,
+	NOOMC_INSTR_RSHIFT,
+	
+	NOOMC_INSTR_CONCAT,
+	NOOMC_INSTR_LEN,
+	NOOMC_INSTR_GET,
+	NOOMC_INSTR_SET,
+
+	NOOMC_INSTR_NOP2 = 0xff,
+} noomC_InstrType;
+
+typedef struct noomC_Instr {
+	noomC_InstrType type;
+	unsigned char a;
+	union {
+		struct {
+			unsigned char b;
+			unsigned char c;
+		};
+		unsigned short u;
+		short s;
+	};
+} noomC_Instr;