/**
 * @file addons/script/script.h
 * @brief Flecs script implementation.
 */

#ifndef FLECS_SCRIPT_PRIVATE_H
#define FLECS_SCRIPT_PRIVATE_H

#include "../../private_api.h"
#include "../parser/parser.h"

#ifdef FLECS_SCRIPT

typedef struct ecs_script_entity_t ecs_script_entity_t;

#define flecs_script_impl(script) ((ecs_script_impl_t*)script)

struct ecs_script_impl_t {
    ecs_script_t pub;
    ecs_allocator_t allocator;
    ecs_script_scope_t *root;
    ecs_expr_node_t *expr; /* Only set if script is just an expression */
    char *token_buffer;
    char *token_remaining; /* Remaining space in token buffer */
    const char *next_token; /* First character after expression */
    int32_t token_buffer_size;
    int32_t refcount;
};

typedef struct ecs_function_calldata_t {
    ecs_entity_t function;
    ecs_function_callback_t callback;
    void *ctx;
} ecs_function_calldata_t;

#include "ast.h"
#include "expr/expr.h"
#include "visit.h"
#include "visit_eval.h"
#include "template.h"

struct ecs_script_runtime_t {
    ecs_allocator_t allocator;
    ecs_expr_stack_t expr_stack;
    ecs_stack_t stack;
    ecs_vec_t using;
    ecs_vec_t with;
    ecs_vec_t with_type_info;
    ecs_vec_t annot;
};

ecs_script_t* flecs_script_new(
    ecs_world_t *world);

ecs_script_scope_t* flecs_script_scope_new(
    ecs_parser_t *parser);

int flecs_script_visit_free(
    ecs_script_t *script);

int flecs_script_visit_free_node(
    ecs_script_t *script,
    ecs_script_node_t *node);

ecs_script_vars_t* flecs_script_vars_push(
    ecs_script_vars_t *parent,
    ecs_stack_t *stack,
    ecs_allocator_t *allocator);

ecs_script_runtime_t* flecs_script_runtime_get(
    ecs_world_t *world);

void flecs_script_register_builtin_functions(
    ecs_world_t *world);

void flecs_function_import(
    ecs_world_t *world);

int flecs_script_check(
    const ecs_script_t *script,
    const ecs_script_eval_desc_t *desc);

const char* flecs_script_stmt(
    ecs_parser_t *parser,
    const char *pos);

int ecs_script_ast_node_to_buf(
    const ecs_script_t *script,
    ecs_script_node_t *node,
    ecs_strbuf_t *buf,
    bool colors,
    int32_t depth);

void ecs_script_runtime_clear(
    ecs_script_runtime_t *r);

#endif // FLECS_SCRIPT
#endif // FLECS_SCRIPT_PRIVATE_H