asm: implement an asm parser and emitter

asm/parse/unit.c

@@ -0,0 +1,42 @@
+#include "parse.h"
+
+struct unit_parser_state {
+	struct parser_state s_base;
+};
+
+static enum ivy_status parse_constpool(struct ivy_asm_parser* ctx, struct ivy_asm_token* tok)
+{
+	asm_parser_push_state(ctx, ASM_PARSER_CONSTPOOL);
+	return IVY_OK;
+}
+
+static enum ivy_status parse_import(
+	struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
+{
+	asm_parser_push_state(ctx, ASM_PARSER_IMPORT);
+	return IVY_OK;
+}
+
+static enum ivy_status parse_block(
+	struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
+{
+	asm_parser_push_state(ctx, ASM_PARSER_BLOCK);
+	return IVY_OK;
+}
+
+static enum ivy_status parse_class(
+	struct ivy_asm_parser *ctx, struct ivy_asm_token *tok)
+{
+	asm_parser_push_state(ctx, ASM_PARSER_CLASS);
+	return IVY_OK;
+}
+
+struct parser_state_type unit_parser_state_type = {
+	.n_state_size = sizeof(struct unit_parser_state),
+	.n_keyword_parsers = {
+		KW_PARSER(CONSTPOOL, parse_constpool),
+		KW_PARSER(IMPORT, parse_import),
+		KW_PARSER(CLASS, parse_class),
+		KW_PARSER(BLOCK, parse_block),
+	},
+};