pikapython/port/linux/boot/demo02-add/main.c

/* this demo shows the usage of input and return of method */

#include "BaseObj.h"
#include <stdio.h>

void addMethod(PikaObj *self, Args* args)
{
    int32_t val1 = args_getInt(args, "val1");
    int32_t val2 = args_getInt(args, "val2");
    int32_t res = val1 + val2;
    method_returnInt(args, res);
}

PikaObj *New_TEST(Args *args)
{
    /*  Derive from the tiny object class.
        Tiny object can not import sub object.
        Tiny object is the smallest object. */
    PikaObj *self = New_TinyObj(args);

    /* bind the method */
    class_defineMethod(self, "add(val1:int, val2:int)->int", addMethod);

    /* return the object */
    return self;
}

PikaObj *New_MYROOT(Args *args)
{
    /*  Derive from the base object class .
        BaseObj is the smallest object that can
        import sub object.      */
    PikaObj *self = New_BaseObj(args);

    /* new led object bellow root object */
    obj_newObj(self, "test", "TEST", New_TEST);

    /* return the object */
    return self;
}

int32_t main()
{
    /* new root object */
    PikaObj *root = newRootObj("root", New_MYROOT);
    /* user input buff */
    char inputBuff[256] = {0};
    /* run the script with check*/
    obj_run(root, "res = test.add(1, 2)");
    int32_t res = obj_getInt(root, "res");
    printf("the res of 'test.add(1, 2)' is %d \r\n", res);
    printf("memory used max = %0.2f kB\r\n", pikaMemMax() / 1024.0);
    printf("memory used now = %0.2f kB\r\n", pikaMemNow() / 1024.0);
    while (1)
    {
        /* get user input */
        fgets(inputBuff, sizeof(inputBuff), stdin);

        /* run PikaScript and get res */
        Args *resArgs = obj_runDirect(root, inputBuff);

        /* get system output of PikaScript*/
        char *sysOut = args_getSysOut(resArgs);;

        if (NULL != sysOut)
        {
            /* print32_t out the system output */
            printf("%s\r\n", sysOut);
        }

        /* deinit the res */
        args_deinit(resArgs);
    }
}