1 files changed, 99 insertions, 0 deletions
diff --git a/api/vm.h b/api/vm.h
new file mode 100644
index 0000000..94103d5
--- /dev/null
+++ b/api/vm.h
@@ -0,0 +1,99 @@
+#ifndef _API_VM_H_
+#define _API_VM_H_
+
+#include <stddef.h>
+#include <stdbool.h>
+#include "../src/expression.h"
+
+typedef enum
+{
+	MODULE_PLAIN,
+	MODULE_NATIVE,
+} UwUVMModuleType;
+
+typedef struct
+{
+	void *(*copy  )(void *data);
+	void  (*delete)(void *data);
+	char *(*print )(void *data);
+} UwUVMNativeType;
+
+typedef struct
+{
+	void *data;
+	UwUVMNativeType *type;
+} UwUVMNativeValue;
+
+typedef struct UwUVMArgs
+{
+	size_t num;
+	struct UwUVMValue       **evaluated;
+	struct UwUVMExpression *unevaluated;
+	struct UwUVMArgs *super;
+} UwUVMArgs;
+
+typedef struct UwUVMValue (*UwUVMNativeFunction)(UwUVMArgs *args);
+
+typedef struct
+{
+	UwUVMModuleType type;
+	union
+	{
+		struct UwUVMExpression *plain;
+		UwUVMNativeFunction native;
+	} value;
+} UwUVMFunction;
+
+typedef struct UwUVMValue
+{
+	enum
+	{
+		VT_INT,
+		VT_STR,
+		VT_REF,
+		VT_NAT,
+	} type;
+	union
+	{
+		int           int_value;
+		char         *str_value;
+		UwUVMFunction   *ref_value;
+		UwUVMNativeValue nat_value;
+	} value;
+} UwUVMValue;
+
+typedef struct UwUVMExpression
+{
+	ExpressionType type;
+	union
+	{
+		struct
+		{
+			UwUVMFunction *function;
+			struct UwUVMExpression *args;
+			size_t           num_args;
+		}           cll_value;
+		int         int_value;
+		char       *str_value;
+		UwUVMFunction *ref_value;
+	} value;
+} UwUVMExpression;
+
+typedef struct
+{
+	void *api_library;
+	UwUVMFunction *main_function;
+	UwUVMFunction **functions;
+	size_t   num_functions;
+	void     **libraries;
+	size_t num_libraries;
+} UwUVMProgram;
+
+void uwuvm_free_value(UwUVMValue value);
+void uwuvm_free_args(UwUVMArgs *args);
+UwUVMValue uwuvm_copy_value(UwUVMValue value);
+UwUVMValue uwuvm_get_arg(UwUVMArgs *args, size_t i);
+UwUVMValue uwuvm_evaluate_expression(UwUVMExpression *expression, UwUVMArgs *args);
+UwUVMValue uwuvm_run_function(UwUVMFunction *function, UwUVMArgs args);
+
+#endif