Add a number implementation struct to libab.

This commit is contained in:
Danila Fedorin 2018-04-21 17:32:38 -07:00
parent 596e1419b4
commit b12f6d7a31
2 changed files with 42 additions and 0 deletions

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@ -7,6 +7,7 @@
#include "parser.h" #include "parser.h"
#include "result.h" #include "result.h"
#include "table.h" #include "table.h"
#include "number.h"
/** /**
* The main struct of libabacus, * The main struct of libabacus,
@ -29,6 +30,10 @@ struct libab_s {
* things like functions and operators. * things like functions and operators.
*/ */
libab_table table; libab_table table;
/**
* The number implementation used by this instance.
*/
libab_number_impl impl;
}; };
typedef struct libab_s libab; typedef struct libab_s libab;

37
include/number.h Normal file
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@ -0,0 +1,37 @@
#ifndef LIBABACUS_NUMBER_H
#define LIBABACUS_NUMBER_H
typedef void (*libab_num_function)(void*, void*, void*);
typedef void (*libab_num_function_unary)(void*, void*);
/**
* Struct that holds information
* about the implementation of numbers
* that is being used by libab. This is not
* assumed or inferred, and it's necessary to
* provide all of these definitions.
*/
struct libab_number_impl_s {
/**
* The function used to allocate a number.
*/
void* (*allocate)();
/**
* The function used to free a number.
*/
void (*free)(void*);
/**
* The function used to construct a number
* out of a string.
*/
void* (*parse)(const char*);
/**
* A function to copy the value of one number
* into the value of another.
*/
void (*copy)(void*, void*);
};
typedef struct libab_number_impl_s libab_number_impl;
#endif