diff --git a/asm/assembler/assembler.c b/asm/assembler/assembler.c
new file mode 100644
index 0000000..f0ed9ad
--- /dev/null
+++ b/asm/assembler/assembler.c
@@ -0,0 +1,200 @@
+#include <ivy/asm/assembler.h>
+#include <blue/core/queue.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "assembler.h"
+
+extern struct assembler_scope_type class_scope_type;
+extern struct assembler_scope_type lambda_scope_type;
+extern struct assembler_scope_type msgh_scope_type;
+extern struct assembler_scope_type constpool_scope_type;
+
+static const struct assembler_scope_type *scope_types[] = {
+	[IVY_ASM_SCOPE_CLASS] = &class_scope_type,
+	[IVY_ASM_SCOPE_LAMBDA] = &lambda_scope_type,
+	[IVY_ASM_SCOPE_MSGH] = &msgh_scope_type,
+	[IVY_ASM_SCOPE_CONSTPOOL] = &constpool_scope_type,
+};
+static const size_t nr_scope_types = sizeof scope_types / sizeof scope_types[0];
+
+struct ivy_assembler {
+	FILE *as_fp;
+	struct assembler_scope *as_scope;
+};
+
+enum ivy_static ivy_assembler_create(FILE *fp, struct ivy_assembler **as)
+{
+	struct ivy_assembler *out = malloc(sizeof *out);
+	
+	if (!out) {
+		return IVY_ERR_NO_MEMORY;
+	}
+
+	memset(out, 0x0, sizeof *out);
+
+	out->as_fp = fp;
+
+	*as = out;
+	return IVY_OK;
+}
+
+void ivy_assembler_destroy(struct ivy_assembler *as)
+{
+	free(as);
+}
+
+enum ivy_status ivy_assembler_begin_scope(
+	struct ivy_assembler *as, enum ivy_assembler_scope_type type)
+{
+	if (type < 0 || type >= nr_scope_types) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = scope_types[type];
+	if (!type_info) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	if (as->as_scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	struct assembler_scope *scope = malloc(type_info->s_scope_size);
+	if (!scope) {
+		return IVY_ERR_NO_MEMORY;
+	}
+
+	scope->s_type = type;
+	as->as_scope = scope;
+
+	if (type_info->s_init_scope) {
+		type_info->s_init_scope(as, scope);
+	}
+
+	return IVY_OK;
+}
+
+enum ivy_status ivy_assembler_end_scope(struct ivy_assembler *as)
+{
+	if (!as->as_scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = as->as_scope->s_ops;
+	if (!type_info) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	if (type_info->s_finish_scope) {
+		type_info->s_finish_scope(as, as->as_scope);
+	}
+
+	free(as->as_scope);
+	as->as_scope = NULL;
+
+	return IVY_OK;
+}
+
+enum ivy_status ivy_assembler_put_string(
+	struct ivy_assembler *as, int index, const char *s)
+{
+	struct assembler_scope *scope = as->as_scope;
+
+	if (!scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = scope->s_ops;
+	if (!type_info || !type_info->s_put_string) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	return type_info->s_put_string(as, scope, index, s);
+}
+
+enum ivy_status ivy_assembler_put_ident(
+	struct ivy_assembler *as, int index, const char *s)
+{
+	struct assembler_scope *scope = as->as_scope;
+
+	if (!scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = scope->s_ops;
+	if (!type_info || !type_info->s_put_string) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	return type_info->s_put_string(as, scope, index, s);
+}
+
+enum ivy_status ivy_assembler_put_atom(
+	struct ivy_assembler *as, int index, const char *s)
+{
+	struct assembler_scope *scope = as->as_scope;
+
+	if (!scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = scope->s_ops;
+	if (!type_info || !type_info->s_put_atom) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	return type_info->s_put_atom(as, scope, index, s);
+}
+
+enum ivy_status ivy_assembler_put_selector(
+	struct ivy_assembler *as, int index, struct ivy_selector *sel)
+{
+	struct assembler_scope *scope = as->as_scope;
+
+	if (!scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = scope->s_ops;
+	if (!type_info || !type_info->s_put_selector) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	return type_info->s_put_selector(as, scope, index, sel);
+}
+
+enum ivy_status ivy_assembler_put_mvar(
+	struct ivy_assembler *as, int index, const char *name)
+{
+	struct assembler_scope *scope = as->as_scope;
+
+	if (!scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = scope->s_ops;
+	if (!type_info || !type_info->s_put_mvar) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	return type_info->s_put_mvar(as, scope, index, name);
+}
+
+enum ivy_status ivy_assembler_put_instr(
+	struct ivy_assembler *as, const struct ivy_instr *i)
+{
+	struct assembler_scope *scope = as->as_scope;
+
+	if (!scope) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	const struct assembler_scope_type *type_info = scope->s_ops;
+	if (!type_info || !type_info->s_put_instr) {
+		return IVY_ERR_NOT_SUPPORTED;
+	}
+
+	return type_info->s_put_instr(as, scope, i);
+}
\ No newline at end of file
diff --git a/asm/assembler/assembler.h b/asm/assembler/assembler.h
new file mode 100644
index 0000000..f110e53
--- /dev/null
+++ b/asm/assembler/assembler.h
@@ -0,0 +1,28 @@
+#ifndef _ASSEMBLER_ASSEMBLER_H_
+#define _ASSEMBLER_ASSEMBLER_H_
+
+#include <ivy/asm/assembler.h>
+#include <stddef.h>
+
+struct assembler_scope_type;
+
+struct assembler_scope {
+	enum ivy_assembler_scope_type s_type;
+	struct assembler_scope_type *s_ops;
+};
+
+struct assembler_scope_type {
+	size_t s_scope_size;
+
+	enum ivy_status(*s_init_scope)(struct ivy_assembler *, struct assembler_scope *);
+	enum ivy_status(*s_finish_scope)(struct ivy_assembler *, struct assembler_scope *);
+
+	enum ivy_status(*s_put_string)(struct ivy_assembler *, struct assembler_scope *, long, const char *);
+	enum ivy_status(*s_put_ident)(struct ivy_assembler *, struct assembler_scope *, long, const char *);
+	enum ivy_status(*s_put_atom)(struct ivy_assembler *, struct assembler_scope *, long, const char *);
+	enum ivy_status(*s_put_selector)(struct ivy_assembler *, struct assembler_scope *, long, const struct ivy_selector *);
+	enum ivy_status(*s_put_mvar)(struct ivy_assembler *, struct assembler_scope *, long, const char *);
+	enum ivy_status(*s_put_instr)(struct ivy_assembler *, struct assembler_scope *, const struct ivy_instr *);
+};
+
+#endif
\ No newline at end of file
diff --git a/asm/assembler/class.c b/asm/assembler/class.c
new file mode 100644
index 0000000..d22f0fe
--- /dev/null
+++ b/asm/assembler/class.c
@@ -0,0 +1,9 @@
+#include "assembler.h"
+
+struct class_scope {
+	
+};
+
+const struct assembler_scope_type class_scope_type = {
+	.s_scope_size = sizeof(struct class_scope),
+};
\ No newline at end of file
diff --git a/asm/assembler.c b/asm/assembler/constpool.c
similarity index 100%
rename from asm/assembler.c
rename to asm/assembler/constpool.c
diff --git a/asm/assembler/lambda.c b/asm/assembler/lambda.c
new file mode 100644
index 0000000..e69de29
diff --git a/asm/assembler/msgh.c b/asm/assembler/msgh.c
new file mode 100644
index 0000000..e69de29
diff --git a/asm/include/ivy/asm/assembler.h b/asm/include/ivy/asm/assembler.h
index 1954399..c2c086d 100644
--- a/asm/include/ivy/asm/assembler.h
+++ b/asm/include/ivy/asm/assembler.h
@@ -3,6 +3,7 @@
 
 #include <ivy/misc.h>
 #include <ivy/status.h>
+#include <stdio.h>
 
 #define IVY_ASM_INDEX_AUTO (-1)
 
@@ -13,14 +14,13 @@ struct ivy_assembler;
 
 enum ivy_assembler_scope_type {
 	IVY_ASM_SCOPE_NONE = 0,
-	IVY_ASM_SCOPE_UNIT,
 	IVY_ASM_SCOPE_CLASS,
 	IVY_ASM_SCOPE_LAMBDA,
 	IVY_ASM_SCOPE_MSGH,
 	IVY_ASM_SCOPE_CONSTPOOL,
 };
 
-IVY_API enum ivy_static ivy_assembler_create(struct ivy_assembler **as);
+IVY_API enum ivy_static ivy_assembler_create(FILE *out, struct ivy_assembler **as);
 IVY_API void ivy_assembler_destroy(struct ivy_assembler *as);
 
 IVY_API enum ivy_status ivy_assembler_begin_scope(