#ifndef __SPL_SEMA_H__
#define __SPL_SEMA_H__

#include "spl_ast.h"
#include "spl_attr.h"
#include "spl_diag.h"
#include "spl_mpa.h"
#include "spl_type.h"

typedef enum {
    SPL_SYMBOL_KIND_ERROR,
    SPL_SYMBOL_KIND_VAR,
    SPL_SYMBOL_KIND_MEMBER,
    SPL_SYMBOL_KIND_FN,
    SPL_SYMBOL_KIND_TYPE,
} spl_symbol_kind_t;

typedef struct {
    const char *name;
    spl_symbol_kind_t kind;
    spl_def_id_t node;
} spl_symbol_t;

typedef usize spl_scope_id_t; /* 0 is error */

typedef struct {
    spl_scope_id_t parent;
    MAP(const char *, spl_symbol_t) symbols;
} spl_scope_node_t;
typedef VEC(spl_scope_node_t) spl_scope_node_vec_t;

typedef struct {
    spl_scope_node_vec_t scopes;
    spl_scope_id_t root_scope;
    spl_scope_id_t current_scope;
} spl_scope_t;

void spl_scope_init(spl_scope_t *scope);
void spl_scope_drop(spl_scope_t *scope);
spl_scope_id_t spl_scope_alloc(spl_scope_t *scope);
bool spl_scope_insert(spl_scope_t *scope, spl_scope_id_t id, spl_symbol_t symbol);
bool spl_scope_find(spl_scope_t *scop, const char *symbol_name, spl_symbol_t *out);

typedef VEC(const char *) spl_symbol_path_t;

typedef struct {
    spl_ast_t *ast;
    spl_type_t *type;
    spl_scope_t *scope;
    spl_symbol_t root;
    spl_attr_t *attr;
    spl_lang_type_id_t current_aggregate_lang;
    spl_lang_type_id_t current_fn_ret_tid;
    spl_lang_type_id_t current_loop_break_tid;
    spl_symbol_path_t label_stack;

    spl_diag_t *diag;
} spl_sema_t;

void spl_sema_init(spl_sema_t *sema, spl_ast_t *ast, spl_type_t *type, spl_scope_t *scope,
                   spl_attr_t *attr);
void spl_sema_drop(spl_sema_t *sema);

void spl_sema_run_module(spl_sema_t *sema, spl_ast_node_ref_t module_ref);
void spl_sema_run(spl_sema_t *sema);
void spl_sema_dump(spl_sema_t *sema);

#endif /* __SPL_SEMA_H__ */