summaryrefslogblamecommitdiff
path: root/src/map/magic-expr.hpp
blob: 2e9c5ecaf07f521d6853ddc1102e616755db6814 (plain) (tree)
1
2
3
4
5

                      
 

                                    








                                          
                                                                                                      














                                          

                  

                          
                
                                                                   

        

                 

                          
                                                   






                                                                 
                                                   





                                                                   
                                           



                                                          
                                                       



                                                                 
                                             



                                                               
                                               
 
                                      
 
                               
 
                               
 
                                             
 
                                                           
 
                                                                                      



 
                                                                            
 
                                                                                                                                                
 
                                                              
 
                        
#ifndef MAGIC_EXPR_HPP
#define MAGIC_EXPR_HPP

#include "magic-interpreter.hpp"
#include "magic-interpreter-aux.hpp"

#ifndef MAX
#  define MAX(x,y) (((x)>(y)) ? (x) : (y))
#endif
#ifndef MIN
#  define MIN(x,y) (((x)<(y)) ? (x) : (y))
#endif

#ifndef INT_MAX
#  define INT_MAX (1<<30)       // It's more than that, but this is quite sufficient for our purposes.
#endif

/*
 * Argument types:
 *  i : int
 *  d : dir
 *  s : string
 *  e : entity
 *  l : location
 *  a : area
 *  S : spell
 *  I : invocation
 *  . : any, except for fail/undef
 *  _ : any, including fail, but not undef
 */
typedef struct fun
{
    const char *name;
    const char *signature;
    char ret_ty;
    int(*fun)(env_t *env, int args_nr, val_t *result, val_t *args);
} fun_t;

typedef struct op
{
    const char *name;
    const char *signature;
    int(*op)(env_t *env, int args_nr, val_t *args);
} op_t;

/**
 * Retrieves a function by name
 * @param name The name to look up
 * @return A function of that name, or NULL, and a function index
 */
fun_t *magic_get_fun(const char *name, int *index);

/**
 * Retrieves an operation by name
 * @param name The name to look up
 * @return An operation of that name, or NULL, and a function index
 */
op_t *magic_get_op(char *name, int *index);

/**
 * Evaluates an expression and stores the result in `dest'
 */
void magic_eval(env_t *env, val_t *dest, expr_t *expr);

/**
 * Evaluates an expression and coerces the result into an integer
 */
int magic_eval_int(env_t *env, expr_t *expr);

/**
 * Evaluates an expression and coerces the result into a string
 */
char *magic_eval_str(env_t *env, expr_t *expr);

int map_is_solid(int m, int x, int y);

expr_t *magic_new_expr(int ty);

void magic_clear_var(val_t *v);

void magic_copy_var(val_t *dest, val_t *src);

void magic_random_location(location_t *dest, area_t *area);

int                            // ret -1: not a string, ret 1: no such item, ret 0: OK




 magic_find_item(val_t *args, int index, struct item *item, int *stackable);

#define GET_ARG_ITEM(index, dest, stackable) switch (magic_find_item(args, index, &dest, &stackable)) { case -1 : return 1; case 1 : return 0; }

int magic_location_in_area(int m, int x, int y, area_t *area);

#endif // MAGIC_EXPR_HPP