#ifndef EXPRESSION_H
#define EXPRESSION_H

#include "scanner.h"

typedef enum {
    Expression,
    Literal,
    Grouping,
    Unary,
    Binary,
    Operator
} ExpressionType;

typedef struct {
    ExpressionType type;
    union ex {
        struct binary;
        struct grouping;
        struct literal;
        struct unary;
    } expression;
} Expr;

typedef struct {
    Expr left;
    TokenType op;
    Expr right;
} binary;

struct grouping {
    Expr expression;
};

struct literal {
    char* object;
};

struct unary {
    TokenType op;
    Expr right;
};

#endif