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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
"use strict";
((window) => {
const core = window.Deno.core;
const __bootstrap = window.__bootstrap;
const {
ArrayBuffer,
} = window.__bootstrap.primordials;
class DynamicLibrary {
#rid;
symbols = {};
constructor(path, symbols) {
this.#rid = core.opSync("op_ffi_load", { path, symbols });
for (const symbol in symbols) {
const isNonBlocking = symbols[symbol].nonblocking;
this.symbols[symbol] = (...args) => {
const parameters = [];
const buffers = [];
for (const arg of args) {
if (
arg?.buffer instanceof ArrayBuffer &&
arg.byteLength !== undefined
) {
parameters.push(buffers.length);
buffers.push(arg);
} else {
parameters.push(arg);
}
}
if (isNonBlocking) {
return core.opAsync("op_ffi_call_nonblocking", {
rid: this.#rid,
symbol,
parameters,
buffers,
});
} else {
return core.opSync("op_ffi_call", {
rid: this.#rid,
symbol,
parameters,
buffers,
});
}
};
}
}
close() {
core.close(this.#rid);
}
}
function dlopen(path, symbols) {
// URL support is progressively enhanced by util in `runtime/js`.
const pathFromURL = __bootstrap.util.pathFromURL ?? ((p) => p);
return new DynamicLibrary(pathFromURL(path), symbols);
}
window.__bootstrap.ffi = { dlopen };
})(this);
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