Hywan

const SECONDS_IN_A_DAY = 86400.;
const UNIX_EPOCH_JULIAN_DAY = 2440587.5;

function unix_to_julian(timestamp) {
    return timestamp / SECONDS_IN_A_DAY + UNIX_EPOCH_JULIAN_DAY;
}

function julian_to_unix(day) {
    return ((day - UNIX_EPOCH_JULIAN_DAY) * SECONDS_IN_A_DAY);
}

Hywan

import org.wasmer.Instance;
import org.wasmer.Memory;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.Paths;

class MemoryExample {
    public static void main(String[] args) throws IOException {

Hywan

#[no_mangle]
pub extern fn return_hello() -> *const u8 {
    b"Hello, World!\0".as_ptr()
}

Hywan

import org.wasmer.Instance;
import org.wasmer.exports.Function;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

class SimpleExample {
    public static void main(String[] args) throws IOException {
        // Read the WebAssembly bytes.

Hywan

import org.wasmer.Instance;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

class SimpleExample {
    public static void main(String[] args) throws IOException {
        // Read the WebAssembly bytes.
        byte[] bytes = Files.readAllBytes(Paths.get("simple.wasm"));

Hywan

#[no_mangle]
pub extern fn sum(x: i32, y: i32) -> i32 {
    x + y
}

Hywan

use std::{convert::TryFrom, fmt::Debug};

pub trait WitValue
where
    Self: Sized + Debug + Copy,
{
}

impl WitValue for i32 {}
impl WitValue for f32 {}

Hywan

-- Select all WebAssembly instances.
SELECT * FROM wasm.instances;

--                   id                  |          wasm_file
-- --------------------------------------+-------------------------------
--  426e17af-c32f-5027-ad73-239e5450dd91 | /absolute/path/to/simple.wasm
-- (1 row)

-- Select all exported functions for a specific instance.
SELECT

Hywan

-- New instance of the `simple.wasm` WebAssembly module.
SELECT wasm_new_instance('/absolute/path/to/simple.wasm', 'ns');

-- Call a WebAssembly exported function!
SELECT ns_sum(1, 2);

--  ns_sum
-- --------
--       3
-- (1 row)

Hywan

#[no_mangle]
pub extern fn sum(x: i32, y: i32) -> i32 {
    x + y
}