#ifndef NCTREF_TYPES_H
#define NCTREF_TYPES_H

#include<stddef.h>
#include<stdint.h>

typedef enum {
	TYPE_TYPE_PRIMITIVE, TYPE_TYPE_COMPOUND, TYPE_TYPE_POINTER, TYPE_TYPE_FUNCTION, TYPE_TYPE_ARRAY, TYPE_TYPE_ERROR
} TypeType;

union Type;

typedef struct TypePrimitive {
	TypeType type;
	
	const char *src;
	
	uint16_t width;
	int base;
	
	int isFloat;
	int isUnsigned;
	int isNative;
	int isMinimum;
	
	int vector; /* 1 for no vector. */
	
	struct TypePrimitive *next;
} TypePrimitive;

typedef struct TypePointer {
	TypeType type;
	
	union Type *of;
} TypePointer;

typedef struct TypeFunction {
	TypeType type;
	
	union Type *ret;
	
	union Type **args;
	size_t argCount;
} TypeFunction;

typedef struct TypeArray {
	TypeType type;
	
	union Type *of;
	size_t length; /* 0 means unknown */
} TypeArray;

typedef union Type {
	TypeType type;
	
	TypePrimitive primitive;
	TypePointer pointer;
	TypeFunction function;
	TypeArray array;
} Type;

extern Type TYPE_ERROR;

Type *primitive_parse(const char*);

size_t type_size(Type*);
int type_equal(Type*, Type*);
Type *type_pointer_wrap(Type*);

/* 0 = not castable, 1 = explicitly castable, 2 = implicitly castable */
int type_is_castable(Type *from, Type *to);

#endif