jerry_test/source/step9.d - master - vuvk/d-jerryscript

jerry_test/source/step9.d
78 строк3 KB
tai-prg3
Fix name of module jerryscript_snapshot
04 июн 2018, 08:10
04 июн 2018, 08:1026f41b3
module step9;

import std.stdio;
import std.conv;
import core.stdc.stdio;
import core.stdc.stdlib;

import jerryscript_core;
import jerryscript_port;
import jerryscript_snapshot;
import handler;

import util;

void RunStep9()
{
    /**
     *  Step 9. Save and run snapshot
     */
    writeln("\nStep 9. Save and run snapshot");

    jerry_init (jerry_init_flag_t.JERRY_INIT_EMPTY);
    jerryx_handler_register_global (cast(ubyte*)"print", &jerryx_handler_print);

    uint[256] global_mode_snapshot_buffer;
    const string code_to_snapshot_p = "
        (function () {
            function sayHello(name) {
                print('Hello, ' + name + '!');
            }

            var name = 'World';
            sayHello(name);

            return 'Snapshot is executed!';
        }) ();
    ";

    jerry_value_t generate_result;
    generate_result = jerry_generate_snapshot (null,
                                               0,
                                               cast(ubyte*)code_to_snapshot_p.ptr,
                                               code_to_snapshot_p.length,
                                               jerry_generate_snapshot_opts_t.JERRY_SNAPSHOT_SAVE_STRICT,
                                               global_mode_snapshot_buffer.ptr,
                                               global_mode_snapshot_buffer.length);
    size_t snapshot_size;
    if (!jerry_value_is_error(generate_result))
        snapshot_size = cast(size_t)jerry_get_number_value (generate_result);
    else
        print_error(generate_result);
    jerry_release_value (generate_result);

    jerry_cleanup ();

    writeln("Size of code = " ~ to!string(code_to_snapshot_p.length));
    writeln("Size of snapshot = " ~ to!string(snapshot_size));
    writeln("Snapshot: ");
    for (int i = 0; i < snapshot_size / uint.sizeof; ++i)
        writef("%s  ", cast(char*)&global_mode_snapshot_buffer[i]);


    writeln("\nNow running snapshot");
    jerry_init (jerry_init_flag_t.JERRY_INIT_EMPTY);
    jerryx_handler_register_global (cast(ubyte*)"print", &jerryx_handler_print);

    jerry_value_t res = jerry_exec_snapshot (cast(const uint*)global_mode_snapshot_buffer.ptr,
                                             snapshot_size,
                                             0,
                                             jerry_exec_snapshot_opts_t.JERRY_SNAPSHOT_EXEC_COPY_DATA);
    if (!jerry_value_is_error(res))
        print_value (res);
    else
        print_error(res);
    jerry_release_value (res);

    jerry_cleanup ();
}