#ifndef AST_H
#define AST_H

#include "collection.h"

typedef struct {
    int line;
    int col;
} Loc;

typedef enum : unsigned int {
    AstSpec_Typedef = 1 << 0,
    // AstSpec_Constexpr = 1 << 1,
    // AstSpec_Auto = 1 << 2,
    // AstSpec_Register = 1 << 3,
    AstSpec_Static = 1 << 4,
    // AstSpec_Extern = 1 << 5,
    // AstSpec_ThreadLocal = 1 << 6,
    AstSpec_Const = 1 << 7,
    // AstSpec_Volatile = 1 << 8,
    // AstSpec_Restrict = 1 << 9,
    // AstSpec_Atomic = 1 << 10,
    AstSpec_Inline = 1 << 11,
} AstSpec;

typedef enum {
    AstDeclar_Ident,
    AstDeclar_Pointer,
    AstDeclar_Array,
} AstDeclarTy;

typedef struct AstDeclar AstDeclar;

struct AstDeclar {
    AstDeclarTy ty;
    Loc loc;
    union {
        char* ident;
        struct {
            AstDeclar* declar;
            AstSpec spec;
        } pointer;
    };
};

typedef struct {
    AstSpec spec;
    unsigned long type_id;
    ARRAY_FIELD(AstDeclar, declars);
    Loc loc;
} AstDecl;

typedef enum {
    AstStmt_Decl,
} AstStmtTy;

typedef struct {
    AstStmtTy ty;
    union {
        AstDecl decl;
    };
} AstStmt;

#endif