mie: add some convenience functions for func, block, and builder

mie/func.c

@@ -80,6 +80,26 @@ struct mie_value *mie_func_generate_value_name(
 	return b_unbox(struct mie_value, name, v_name);
 }
 
+struct mie_block *mie_func_get_first_block(struct mie_func *func)
+{
+	b_queue_entry *entry = b_queue_first(&func->f_blocks);
+	if (!entry) {
+		return NULL;
+	}
+
+	return (struct mie_block *)b_unbox(struct mie_value, entry, v_entry);
+}
+
+struct mie_block *mie_func_get_last_block(struct mie_func *func)
+{
+	b_queue_entry *entry = b_queue_last(&func->f_blocks);
+	if (!entry) {
+		return NULL;
+	}
+
+	return (struct mie_block *)b_unbox(struct mie_value, entry, v_entry);
+}
+
 static struct mie_type *get_type(struct mie_value *v)
 {
 	struct mie_func *f = MIE_FUNC(v);

mie/include/mie/block.h

@@ -22,4 +22,9 @@ MIE_API struct mie_block *mie_block_create(
 	struct mie_func *parent, const char *name);
 MIE_API bool mie_block_add_instr(struct mie_block *block, struct mie_instr *instr);
 
+static inline bool mie_block_is_terminated(const struct mie_block *block)
+{
+	return block->b_terminator != NULL;
+}
+
 #endif

mie/include/mie/builder.h

@@ -43,6 +43,8 @@ extern struct mie_builder *mie_builder_create(
 	struct mie_ctx *ctx, struct mie_module *mod);
 extern void mie_builder_destroy(struct mie_builder *builder);
 
+extern struct mie_func *mie_builder_get_current_func(struct mie_builder *builder);
+
 extern void mie_builder_put_record(
 	struct mie_builder *builder, struct mie_const *val, const char *name);
 extern void mie_builder_put_data(struct mie_builder *builder, struct mie_data *data);

mie/include/mie/func.h

@@ -40,4 +40,7 @@ extern void mie_func_insert_block(
 extern struct mie_value *mie_func_generate_value_name(
 	struct mie_func *func, struct mie_value *val, const char *hint);
 
+extern struct mie_block *mie_func_get_first_block(struct mie_func *func);
+extern struct mie_block *mie_func_get_last_block(struct mie_func *func);
+
 #endif