diff --git a/cache/desktop.go b/cache/desktop.go index add5cfd..1851ff7 100644 --- a/cache/desktop.go +++ b/cache/desktop.go @@ -5,13 +5,14 @@ package cache import ( "context" "fmt" - "github.com/Vilsol/go-pob/utils" "io" "log/slog" "os" "path/filepath" "time" + "github.com/Vilsol/go-pob/utils" + "gopkg.in/djherbis/fscache.v0" ) diff --git a/calculator/config_test.go b/calculator/config_test.go index 24e5abc..7d4bd5f 100644 --- a/calculator/config_test.go +++ b/calculator/config_test.go @@ -2,11 +2,12 @@ package calculator import ( "context" - "github.com/Vilsol/go-pob-data/poe" - "github.com/Vilsol/go-pob/cache" "os" "testing" + "github.com/Vilsol/go-pob-data/poe" + "github.com/Vilsol/go-pob/cache" + "github.com/MarvinJWendt/testza" "github.com/Vilsol/go-pob/builds" diff --git a/calculator/env_test.go b/calculator/env_test.go index a05844d..11af357 100644 --- a/calculator/env_test.go +++ b/calculator/env_test.go @@ -2,11 +2,12 @@ package calculator import ( "context" - "github.com/Vilsol/go-pob-data/poe" - "github.com/Vilsol/go-pob/cache" "os" "testing" + "github.com/Vilsol/go-pob-data/poe" + "github.com/Vilsol/go-pob/cache" + "github.com/MarvinJWendt/testza" "github.com/Vilsol/go-pob/builds" diff --git a/calculator/mod_parser.go b/calculator/mod_parser.go index c1633f3..08f50d2 100644 --- a/calculator/mod_parser.go +++ b/calculator/mod_parser.go @@ -1,11 +1,12 @@ package calculator import ( - utils2 "github.com/Vilsol/go-pob-data/utils" - "golang.org/x/exp/slices" "regexp" "strings" + utils2 "github.com/Vilsol/go-pob-data/utils" + "golang.org/x/exp/slices" + "github.com/Vilsol/go-pob-data/poe" "github.com/Vilsol/go-pob/data" diff --git a/calculator/output_test.go b/calculator/output_test.go index 5ec2e04..bfe23c0 100644 --- a/calculator/output_test.go +++ b/calculator/output_test.go @@ -2,11 +2,12 @@ package calculator import ( "context" - "github.com/Vilsol/go-pob-data/poe" - "github.com/Vilsol/go-pob/cache" "os" "testing" + "github.com/Vilsol/go-pob-data/poe" + "github.com/Vilsol/go-pob/cache" + "github.com/MarvinJWendt/testza" "github.com/Vilsol/go-pob/builds" diff --git a/config/logging.go b/config/logging.go index d069224..6a854f0 100644 --- a/config/logging.go +++ b/config/logging.go @@ -1,11 +1,12 @@ package config import ( - "github.com/Vilsol/go-pob/utils" - "github.com/lmittmann/tint" "log/slog" "os" "time" + + "github.com/Vilsol/go-pob/utils" + "github.com/lmittmann/tint" ) func InitLogging(withTime bool) { diff --git a/data/raw/main.go b/data/raw/main.go index 52843df..c5eecf5 100644 --- a/data/raw/main.go +++ b/data/raw/main.go @@ -2,6 +2,7 @@ package raw import ( "context" + "github.com/Vilsol/go-pob-data/poe" "github.com/Vilsol/go-pob/cache" ) @@ -11,6 +12,7 @@ const LatestVersion = "3.18" type UpdateFunc func(data string) func InitializeAll(version string, updateFunc UpdateFunc) error { + //nolint:wrapcheck return poe.InitializeAll(context.Background(), version, cache.Disk(), func(data string) { updateFunc(data) }) diff --git a/data/tree_graph_test.go b/data/tree_graph_test.go index c55d364..873f202 100644 --- a/data/tree_graph_test.go +++ b/data/tree_graph_test.go @@ -2,9 +2,10 @@ package data import ( "context" + "testing" + "github.com/Vilsol/go-pob-data/poe" "github.com/Vilsol/go-pob/cache" - "testing" "github.com/Vilsol/go-pob/config" "github.com/Vilsol/go-pob/data/raw" diff --git a/frontend/src/wasm_exec.js b/frontend/src/wasm_exec.js index bc6f210..22f8d80 100644 --- a/frontend/src/wasm_exec.js +++ b/frontend/src/wasm_exec.js @@ -2,560 +2,624 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -"use strict"; +'use strict'; (() => { - const enosys = () => { - const err = new Error("not implemented"); - err.code = "ENOSYS"; - return err; - }; - - if (!globalThis.fs) { - let outputBuf = ""; - globalThis.fs = { - constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused - writeSync(fd, buf) { - outputBuf += decoder.decode(buf); - const nl = outputBuf.lastIndexOf("\n"); - if (nl != -1) { - console.log(outputBuf.substring(0, nl)); - outputBuf = outputBuf.substring(nl + 1); - } - return buf.length; - }, - write(fd, buf, offset, length, position, callback) { - if (offset !== 0 || length !== buf.length || position !== null) { - callback(enosys()); - return; - } - const n = this.writeSync(fd, buf); - callback(null, n); - }, - chmod(path, mode, callback) { callback(enosys()); }, - chown(path, uid, gid, callback) { callback(enosys()); }, - close(fd, callback) { callback(enosys()); }, - fchmod(fd, mode, callback) { callback(enosys()); }, - fchown(fd, uid, gid, callback) { callback(enosys()); }, - fstat(fd, callback) { callback(enosys()); }, - fsync(fd, callback) { callback(null); }, - ftruncate(fd, length, callback) { callback(enosys()); }, - lchown(path, uid, gid, callback) { callback(enosys()); }, - link(path, link, callback) { callback(enosys()); }, - lstat(path, callback) { callback(enosys()); }, - mkdir(path, perm, callback) { callback(enosys()); }, - open(path, flags, mode, callback) { callback(enosys()); }, - read(fd, buffer, offset, length, position, callback) { callback(enosys()); }, - readdir(path, callback) { callback(enosys()); }, - readlink(path, callback) { callback(enosys()); }, - rename(from, to, callback) { callback(enosys()); }, - rmdir(path, callback) { callback(enosys()); }, - stat(path, callback) { callback(enosys()); }, - symlink(path, link, callback) { callback(enosys()); }, - truncate(path, length, callback) { callback(enosys()); }, - unlink(path, callback) { callback(enosys()); }, - utimes(path, atime, mtime, callback) { callback(enosys()); }, - }; - } - - if (!globalThis.process) { - globalThis.process = { - getuid() { return -1; }, - getgid() { return -1; }, - geteuid() { return -1; }, - getegid() { return -1; }, - getgroups() { throw enosys(); }, - pid: -1, - ppid: -1, - umask() { throw enosys(); }, - cwd() { throw enosys(); }, - chdir() { throw enosys(); }, - } - } - - if (!globalThis.crypto) { - throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)"); - } - - if (!globalThis.performance) { - throw new Error("globalThis.performance is not available, polyfill required (performance.now only)"); - } - - if (!globalThis.TextEncoder) { - throw new Error("globalThis.TextEncoder is not available, polyfill required"); - } - - if (!globalThis.TextDecoder) { - throw new Error("globalThis.TextDecoder is not available, polyfill required"); - } - - const encoder = new TextEncoder("utf-8"); - const decoder = new TextDecoder("utf-8"); - - globalThis.Go = class { - constructor() { - this.argv = ["js"]; - this.env = {}; - this.exit = (code) => { - if (code !== 0) { - console.warn("exit code:", code); - } - }; - this._exitPromise = new Promise((resolve) => { - this._resolveExitPromise = resolve; - }); - this._pendingEvent = null; - this._scheduledTimeouts = new Map(); - this._nextCallbackTimeoutID = 1; - - const setInt64 = (addr, v) => { - this.mem.setUint32(addr + 0, v, true); - this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true); - } - - const setInt32 = (addr, v) => { - this.mem.setUint32(addr + 0, v, true); - } - - const getInt64 = (addr) => { - const low = this.mem.getUint32(addr + 0, true); - const high = this.mem.getInt32(addr + 4, true); - return low + high * 4294967296; - } - - const loadValue = (addr) => { - const f = this.mem.getFloat64(addr, true); - if (f === 0) { - return undefined; - } - if (!isNaN(f)) { - return f; - } - - const id = this.mem.getUint32(addr, true); - return this._values[id]; - } - - const storeValue = (addr, v) => { - const nanHead = 0x7FF80000; - - if (typeof v === "number" && v !== 0) { - if (isNaN(v)) { - this.mem.setUint32(addr + 4, nanHead, true); - this.mem.setUint32(addr, 0, true); - return; - } - this.mem.setFloat64(addr, v, true); - return; - } - - if (v === undefined) { - this.mem.setFloat64(addr, 0, true); - return; - } - - let id = this._ids.get(v); - if (id === undefined) { - id = this._idPool.pop(); - if (id === undefined) { - id = this._values.length; - } - this._values[id] = v; - this._goRefCounts[id] = 0; - this._ids.set(v, id); - } - this._goRefCounts[id]++; - let typeFlag = 0; - switch (typeof v) { - case "object": - if (v !== null) { - typeFlag = 1; - } - break; - case "string": - typeFlag = 2; - break; - case "symbol": - typeFlag = 3; - break; - case "function": - typeFlag = 4; - break; - } - this.mem.setUint32(addr + 4, nanHead | typeFlag, true); - this.mem.setUint32(addr, id, true); - } - - const loadSlice = (addr) => { - const array = getInt64(addr + 0); - const len = getInt64(addr + 8); - return new Uint8Array(this._inst.exports.mem.buffer, array, len); - } - - const loadSliceOfValues = (addr) => { - const array = getInt64(addr + 0); - const len = getInt64(addr + 8); - const a = new Array(len); - for (let i = 0; i < len; i++) { - a[i] = loadValue(array + i * 8); - } - return a; - } - - const loadString = (addr) => { - const saddr = getInt64(addr + 0); - const len = getInt64(addr + 8); - return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len)); - } - - const timeOrigin = Date.now() - performance.now(); - this.importObject = { - _gotest: { - add: (a, b) => a + b, - }, - gojs: { - // Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters) - // may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported - // function. A goroutine can switch to a new stack if the current stack is too small (see morestack function). - // This changes the SP, thus we have to update the SP used by the imported function. - - // func wasmExit(code int32) - "runtime.wasmExit": (sp) => { - sp >>>= 0; - const code = this.mem.getInt32(sp + 8, true); - this.exited = true; - delete this._inst; - delete this._values; - delete this._goRefCounts; - delete this._ids; - delete this._idPool; - this.exit(code); - }, - - // func wasmWrite(fd uintptr, p unsafe.Pointer, n int32) - "runtime.wasmWrite": (sp) => { - sp >>>= 0; - const fd = getInt64(sp + 8); - const p = getInt64(sp + 16); - const n = this.mem.getInt32(sp + 24, true); - fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n)); - }, - - // func resetMemoryDataView() - "runtime.resetMemoryDataView": (sp) => { - sp >>>= 0; - this.mem = new DataView(this._inst.exports.mem.buffer); - }, - - // func nanotime1() int64 - "runtime.nanotime1": (sp) => { - sp >>>= 0; - setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000); - }, - - // func walltime() (sec int64, nsec int32) - "runtime.walltime": (sp) => { - sp >>>= 0; - const msec = (new Date).getTime(); - setInt64(sp + 8, msec / 1000); - this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true); - }, - - // func scheduleTimeoutEvent(delay int64) int32 - "runtime.scheduleTimeoutEvent": (sp) => { - sp >>>= 0; - const id = this._nextCallbackTimeoutID; - this._nextCallbackTimeoutID++; - this._scheduledTimeouts.set(id, setTimeout( - () => { - this._resume(); - while (this._scheduledTimeouts.has(id)) { - // for some reason Go failed to register the timeout event, log and try again - // (temporary workaround for https://github.com/golang/go/issues/28975) - console.warn("scheduleTimeoutEvent: missed timeout event"); - this._resume(); - } - }, - getInt64(sp + 8), - )); - this.mem.setInt32(sp + 16, id, true); - }, - - // func clearTimeoutEvent(id int32) - "runtime.clearTimeoutEvent": (sp) => { - sp >>>= 0; - const id = this.mem.getInt32(sp + 8, true); - clearTimeout(this._scheduledTimeouts.get(id)); - this._scheduledTimeouts.delete(id); - }, - - // func getRandomData(r []byte) - "runtime.getRandomData": (sp) => { - sp >>>= 0; - crypto.getRandomValues(loadSlice(sp + 8)); - }, - - // func finalizeRef(v ref) - "syscall/js.finalizeRef": (sp) => { - sp >>>= 0; - const id = this.mem.getUint32(sp + 8, true); - this._goRefCounts[id]--; - if (this._goRefCounts[id] === 0) { - const v = this._values[id]; - this._values[id] = null; - this._ids.delete(v); - this._idPool.push(id); - } - }, - - // func stringVal(value string) ref - "syscall/js.stringVal": (sp) => { - sp >>>= 0; - storeValue(sp + 24, loadString(sp + 8)); - }, - - // func valueGet(v ref, p string) ref - "syscall/js.valueGet": (sp) => { - sp >>>= 0; - const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16)); - sp = this._inst.exports.getsp() >>> 0; // see comment above - storeValue(sp + 32, result); - }, - - // func valueSet(v ref, p string, x ref) - "syscall/js.valueSet": (sp) => { - sp >>>= 0; - Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32)); - }, - - // func valueDelete(v ref, p string) - "syscall/js.valueDelete": (sp) => { - sp >>>= 0; - Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16)); - }, - - // func valueIndex(v ref, i int) ref - "syscall/js.valueIndex": (sp) => { - sp >>>= 0; - storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16))); - }, - - // valueSetIndex(v ref, i int, x ref) - "syscall/js.valueSetIndex": (sp) => { - sp >>>= 0; - Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24)); - }, - - // func valueCall(v ref, m string, args []ref) (ref, bool) - "syscall/js.valueCall": (sp) => { - sp >>>= 0; - try { - const v = loadValue(sp + 8); - const m = Reflect.get(v, loadString(sp + 16)); - const args = loadSliceOfValues(sp + 32); - const result = Reflect.apply(m, v, args); - sp = this._inst.exports.getsp() >>> 0; // see comment above - storeValue(sp + 56, result); - this.mem.setUint8(sp + 64, 1); - } catch (err) { - sp = this._inst.exports.getsp() >>> 0; // see comment above - storeValue(sp + 56, err); - this.mem.setUint8(sp + 64, 0); - } - }, - - // func valueInvoke(v ref, args []ref) (ref, bool) - "syscall/js.valueInvoke": (sp) => { - sp >>>= 0; - try { - const v = loadValue(sp + 8); - const args = loadSliceOfValues(sp + 16); - const result = Reflect.apply(v, undefined, args); - sp = this._inst.exports.getsp() >>> 0; // see comment above - storeValue(sp + 40, result); - this.mem.setUint8(sp + 48, 1); - } catch (err) { - sp = this._inst.exports.getsp() >>> 0; // see comment above - storeValue(sp + 40, err); - this.mem.setUint8(sp + 48, 0); - } - }, - - // func valueNew(v ref, args []ref) (ref, bool) - "syscall/js.valueNew": (sp) => { - sp >>>= 0; - try { - const v = loadValue(sp + 8); - const args = loadSliceOfValues(sp + 16); - const result = Reflect.construct(v, args); - sp = this._inst.exports.getsp() >>> 0; // see comment above - storeValue(sp + 40, result); - this.mem.setUint8(sp + 48, 1); - } catch (err) { - sp = this._inst.exports.getsp() >>> 0; // see comment above - storeValue(sp + 40, err); - this.mem.setUint8(sp + 48, 0); - } - }, - - // func valueLength(v ref) int - "syscall/js.valueLength": (sp) => { - sp >>>= 0; - setInt64(sp + 16, parseInt(loadValue(sp + 8).length)); - }, - - // valuePrepareString(v ref) (ref, int) - "syscall/js.valuePrepareString": (sp) => { - sp >>>= 0; - const str = encoder.encode(String(loadValue(sp + 8))); - storeValue(sp + 16, str); - setInt64(sp + 24, str.length); - }, - - // valueLoadString(v ref, b []byte) - "syscall/js.valueLoadString": (sp) => { - sp >>>= 0; - const str = loadValue(sp + 8); - loadSlice(sp + 16).set(str); - }, - - // func valueInstanceOf(v ref, t ref) bool - "syscall/js.valueInstanceOf": (sp) => { - sp >>>= 0; - this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0); - }, - - // func copyBytesToGo(dst []byte, src ref) (int, bool) - "syscall/js.copyBytesToGo": (sp) => { - sp >>>= 0; - const dst = loadSlice(sp + 8); - const src = loadValue(sp + 32); - if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) { - this.mem.setUint8(sp + 48, 0); - return; - } - const toCopy = src.subarray(0, dst.length); - dst.set(toCopy); - setInt64(sp + 40, toCopy.length); - this.mem.setUint8(sp + 48, 1); - }, - - // func copyBytesToJS(dst ref, src []byte) (int, bool) - "syscall/js.copyBytesToJS": (sp) => { - sp >>>= 0; - const dst = loadValue(sp + 8); - const src = loadSlice(sp + 16); - if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) { - this.mem.setUint8(sp + 48, 0); - return; - } - const toCopy = src.subarray(0, dst.length); - dst.set(toCopy); - setInt64(sp + 40, toCopy.length); - this.mem.setUint8(sp + 48, 1); - }, - - "debug": (value) => { - console.log(value); - }, - } - }; - } - - async run(instance) { - if (!(instance instanceof WebAssembly.Instance)) { - throw new Error("Go.run: WebAssembly.Instance expected"); - } - this._inst = instance; - this.mem = new DataView(this._inst.exports.mem.buffer); - this._values = [ // JS values that Go currently has references to, indexed by reference id - NaN, - 0, - null, - true, - false, - globalThis, - this, - ]; - this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id - this._ids = new Map([ // mapping from JS values to reference ids - [0, 1], - [null, 2], - [true, 3], - [false, 4], - [globalThis, 5], - [this, 6], - ]); - this._idPool = []; // unused ids that have been garbage collected - this.exited = false; // whether the Go program has exited - - // Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory. - let offset = 4096; - - const strPtr = (str) => { - const ptr = offset; - const bytes = encoder.encode(str + "\0"); - new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes); - offset += bytes.length; - if (offset % 8 !== 0) { - offset += 8 - (offset % 8); - } - return ptr; - }; - - const argc = this.argv.length; - - const argvPtrs = []; - this.argv.forEach((arg) => { - argvPtrs.push(strPtr(arg)); - }); - argvPtrs.push(0); - - const keys = Object.keys(this.env).sort(); - keys.forEach((key) => { - argvPtrs.push(strPtr(`${key}=${this.env[key]}`)); - }); - argvPtrs.push(0); - - const argv = offset; - argvPtrs.forEach((ptr) => { - this.mem.setUint32(offset, ptr, true); - this.mem.setUint32(offset + 4, 0, true); - offset += 8; - }); - - // The linker guarantees global data starts from at least wasmMinDataAddr. - // Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr. - const wasmMinDataAddr = 4096 + 8192; - if (offset >= wasmMinDataAddr) { - throw new Error("total length of command line and environment variables exceeds limit"); - } - - this._inst.exports.run(argc, argv); - if (this.exited) { - this._resolveExitPromise(); - } - await this._exitPromise; - } - - _resume() { - if (this.exited) { - throw new Error("Go program has already exited"); - } - this._inst.exports.resume(); - if (this.exited) { - this._resolveExitPromise(); - } - } - - _makeFuncWrapper(id) { - const go = this; - return function () { - const event = { id: id, this: this, args: arguments }; - go._pendingEvent = event; - go._resume(); - return event.result; - }; - } - } + const enosys = () => { + const err = new Error('not implemented'); + err.code = 'ENOSYS'; + return err; + }; + + if (!globalThis.fs) { + let outputBuf = ''; + globalThis.fs = { + constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused + writeSync(fd, buf) { + outputBuf += decoder.decode(buf); + const nl = outputBuf.lastIndexOf('\n'); + if (nl != -1) { + console.log(outputBuf.substring(0, nl)); + outputBuf = outputBuf.substring(nl + 1); + } + return buf.length; + }, + write(fd, buf, offset, length, position, callback) { + if (offset !== 0 || length !== buf.length || position !== null) { + callback(enosys()); + return; + } + const n = this.writeSync(fd, buf); + callback(null, n); + }, + chmod(path, mode, callback) { + callback(enosys()); + }, + chown(path, uid, gid, callback) { + callback(enosys()); + }, + close(fd, callback) { + callback(enosys()); + }, + fchmod(fd, mode, callback) { + callback(enosys()); + }, + fchown(fd, uid, gid, callback) { + callback(enosys()); + }, + fstat(fd, callback) { + callback(enosys()); + }, + fsync(fd, callback) { + callback(null); + }, + ftruncate(fd, length, callback) { + callback(enosys()); + }, + lchown(path, uid, gid, callback) { + callback(enosys()); + }, + link(path, link, callback) { + callback(enosys()); + }, + lstat(path, callback) { + callback(enosys()); + }, + mkdir(path, perm, callback) { + callback(enosys()); + }, + open(path, flags, mode, callback) { + callback(enosys()); + }, + read(fd, buffer, offset, length, position, callback) { + callback(enosys()); + }, + readdir(path, callback) { + callback(enosys()); + }, + readlink(path, callback) { + callback(enosys()); + }, + rename(from, to, callback) { + callback(enosys()); + }, + rmdir(path, callback) { + callback(enosys()); + }, + stat(path, callback) { + callback(enosys()); + }, + symlink(path, link, callback) { + callback(enosys()); + }, + truncate(path, length, callback) { + callback(enosys()); + }, + unlink(path, callback) { + callback(enosys()); + }, + utimes(path, atime, mtime, callback) { + callback(enosys()); + } + }; + } + + if (!globalThis.process) { + globalThis.process = { + getuid() { + return -1; + }, + getgid() { + return -1; + }, + geteuid() { + return -1; + }, + getegid() { + return -1; + }, + getgroups() { + throw enosys(); + }, + pid: -1, + ppid: -1, + umask() { + throw enosys(); + }, + cwd() { + throw enosys(); + }, + chdir() { + throw enosys(); + } + }; + } + + if (!globalThis.crypto) { + throw new Error('globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)'); + } + + if (!globalThis.performance) { + throw new Error('globalThis.performance is not available, polyfill required (performance.now only)'); + } + + if (!globalThis.TextEncoder) { + throw new Error('globalThis.TextEncoder is not available, polyfill required'); + } + + if (!globalThis.TextDecoder) { + throw new Error('globalThis.TextDecoder is not available, polyfill required'); + } + + const encoder = new TextEncoder('utf-8'); + const decoder = new TextDecoder('utf-8'); + + globalThis.Go = class { + constructor() { + this.argv = ['js']; + this.env = {}; + this.exit = (code) => { + if (code !== 0) { + console.warn('exit code:', code); + } + }; + this._exitPromise = new Promise((resolve) => { + this._resolveExitPromise = resolve; + }); + this._pendingEvent = null; + this._scheduledTimeouts = new Map(); + this._nextCallbackTimeoutID = 1; + + const setInt64 = (addr, v) => { + this.mem.setUint32(addr + 0, v, true); + this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true); + }; + + const setInt32 = (addr, v) => { + this.mem.setUint32(addr + 0, v, true); + }; + + const getInt64 = (addr) => { + const low = this.mem.getUint32(addr + 0, true); + const high = this.mem.getInt32(addr + 4, true); + return low + high * 4294967296; + }; + + const loadValue = (addr) => { + const f = this.mem.getFloat64(addr, true); + if (f === 0) { + return undefined; + } + if (!isNaN(f)) { + return f; + } + + const id = this.mem.getUint32(addr, true); + return this._values[id]; + }; + + const storeValue = (addr, v) => { + const nanHead = 0x7ff80000; + + if (typeof v === 'number' && v !== 0) { + if (isNaN(v)) { + this.mem.setUint32(addr + 4, nanHead, true); + this.mem.setUint32(addr, 0, true); + return; + } + this.mem.setFloat64(addr, v, true); + return; + } + + if (v === undefined) { + this.mem.setFloat64(addr, 0, true); + return; + } + + let id = this._ids.get(v); + if (id === undefined) { + id = this._idPool.pop(); + if (id === undefined) { + id = this._values.length; + } + this._values[id] = v; + this._goRefCounts[id] = 0; + this._ids.set(v, id); + } + this._goRefCounts[id]++; + let typeFlag = 0; + switch (typeof v) { + case 'object': + if (v !== null) { + typeFlag = 1; + } + break; + case 'string': + typeFlag = 2; + break; + case 'symbol': + typeFlag = 3; + break; + case 'function': + typeFlag = 4; + break; + } + this.mem.setUint32(addr + 4, nanHead | typeFlag, true); + this.mem.setUint32(addr, id, true); + }; + + const loadSlice = (addr) => { + const array = getInt64(addr + 0); + const len = getInt64(addr + 8); + return new Uint8Array(this._inst.exports.mem.buffer, array, len); + }; + + const loadSliceOfValues = (addr) => { + const array = getInt64(addr + 0); + const len = getInt64(addr + 8); + const a = new Array(len); + for (let i = 0; i < len; i++) { + a[i] = loadValue(array + i * 8); + } + return a; + }; + + const loadString = (addr) => { + const saddr = getInt64(addr + 0); + const len = getInt64(addr + 8); + return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len)); + }; + + const timeOrigin = Date.now() - performance.now(); + this.importObject = { + _gotest: { + add: (a, b) => a + b + }, + gojs: { + // Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters) + // may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported + // function. A goroutine can switch to a new stack if the current stack is too small (see morestack function). + // This changes the SP, thus we have to update the SP used by the imported function. + + // func wasmExit(code int32) + 'runtime.wasmExit': (sp) => { + sp >>>= 0; + const code = this.mem.getInt32(sp + 8, true); + this.exited = true; + delete this._inst; + delete this._values; + delete this._goRefCounts; + delete this._ids; + delete this._idPool; + this.exit(code); + }, + + // func wasmWrite(fd uintptr, p unsafe.Pointer, n int32) + 'runtime.wasmWrite': (sp) => { + sp >>>= 0; + const fd = getInt64(sp + 8); + const p = getInt64(sp + 16); + const n = this.mem.getInt32(sp + 24, true); + fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n)); + }, + + // func resetMemoryDataView() + 'runtime.resetMemoryDataView': (sp) => { + sp >>>= 0; + this.mem = new DataView(this._inst.exports.mem.buffer); + }, + + // func nanotime1() int64 + 'runtime.nanotime1': (sp) => { + sp >>>= 0; + setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000); + }, + + // func walltime() (sec int64, nsec int32) + 'runtime.walltime': (sp) => { + sp >>>= 0; + const msec = new Date().getTime(); + setInt64(sp + 8, msec / 1000); + this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true); + }, + + // func scheduleTimeoutEvent(delay int64) int32 + 'runtime.scheduleTimeoutEvent': (sp) => { + sp >>>= 0; + const id = this._nextCallbackTimeoutID; + this._nextCallbackTimeoutID++; + this._scheduledTimeouts.set( + id, + setTimeout(() => { + this._resume(); + while (this._scheduledTimeouts.has(id)) { + // for some reason Go failed to register the timeout event, log and try again + // (temporary workaround for https://github.com/golang/go/issues/28975) + console.warn('scheduleTimeoutEvent: missed timeout event'); + this._resume(); + } + }, getInt64(sp + 8)) + ); + this.mem.setInt32(sp + 16, id, true); + }, + + // func clearTimeoutEvent(id int32) + 'runtime.clearTimeoutEvent': (sp) => { + sp >>>= 0; + const id = this.mem.getInt32(sp + 8, true); + clearTimeout(this._scheduledTimeouts.get(id)); + this._scheduledTimeouts.delete(id); + }, + + // func getRandomData(r []byte) + 'runtime.getRandomData': (sp) => { + sp >>>= 0; + crypto.getRandomValues(loadSlice(sp + 8)); + }, + + // func finalizeRef(v ref) + 'syscall/js.finalizeRef': (sp) => { + sp >>>= 0; + const id = this.mem.getUint32(sp + 8, true); + this._goRefCounts[id]--; + if (this._goRefCounts[id] === 0) { + const v = this._values[id]; + this._values[id] = null; + this._ids.delete(v); + this._idPool.push(id); + } + }, + + // func stringVal(value string) ref + 'syscall/js.stringVal': (sp) => { + sp >>>= 0; + storeValue(sp + 24, loadString(sp + 8)); + }, + + // func valueGet(v ref, p string) ref + 'syscall/js.valueGet': (sp) => { + sp >>>= 0; + const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16)); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 32, result); + }, + + // func valueSet(v ref, p string, x ref) + 'syscall/js.valueSet': (sp) => { + sp >>>= 0; + Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32)); + }, + + // func valueDelete(v ref, p string) + 'syscall/js.valueDelete': (sp) => { + sp >>>= 0; + Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16)); + }, + + // func valueIndex(v ref, i int) ref + 'syscall/js.valueIndex': (sp) => { + sp >>>= 0; + storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16))); + }, + + // valueSetIndex(v ref, i int, x ref) + 'syscall/js.valueSetIndex': (sp) => { + sp >>>= 0; + Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24)); + }, + + // func valueCall(v ref, m string, args []ref) (ref, bool) + 'syscall/js.valueCall': (sp) => { + sp >>>= 0; + try { + const v = loadValue(sp + 8); + const m = Reflect.get(v, loadString(sp + 16)); + const args = loadSliceOfValues(sp + 32); + const result = Reflect.apply(m, v, args); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 56, result); + this.mem.setUint8(sp + 64, 1); + } catch (err) { + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 56, err); + this.mem.setUint8(sp + 64, 0); + } + }, + + // func valueInvoke(v ref, args []ref) (ref, bool) + 'syscall/js.valueInvoke': (sp) => { + sp >>>= 0; + try { + const v = loadValue(sp + 8); + const args = loadSliceOfValues(sp + 16); + const result = Reflect.apply(v, undefined, args); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 40, result); + this.mem.setUint8(sp + 48, 1); + } catch (err) { + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 40, err); + this.mem.setUint8(sp + 48, 0); + } + }, + + // func valueNew(v ref, args []ref) (ref, bool) + 'syscall/js.valueNew': (sp) => { + sp >>>= 0; + try { + const v = loadValue(sp + 8); + const args = loadSliceOfValues(sp + 16); + const result = Reflect.construct(v, args); + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 40, result); + this.mem.setUint8(sp + 48, 1); + } catch (err) { + sp = this._inst.exports.getsp() >>> 0; // see comment above + storeValue(sp + 40, err); + this.mem.setUint8(sp + 48, 0); + } + }, + + // func valueLength(v ref) int + 'syscall/js.valueLength': (sp) => { + sp >>>= 0; + setInt64(sp + 16, parseInt(loadValue(sp + 8).length)); + }, + + // valuePrepareString(v ref) (ref, int) + 'syscall/js.valuePrepareString': (sp) => { + sp >>>= 0; + const str = encoder.encode(String(loadValue(sp + 8))); + storeValue(sp + 16, str); + setInt64(sp + 24, str.length); + }, + + // valueLoadString(v ref, b []byte) + 'syscall/js.valueLoadString': (sp) => { + sp >>>= 0; + const str = loadValue(sp + 8); + loadSlice(sp + 16).set(str); + }, + + // func valueInstanceOf(v ref, t ref) bool + 'syscall/js.valueInstanceOf': (sp) => { + sp >>>= 0; + this.mem.setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16) ? 1 : 0); + }, + + // func copyBytesToGo(dst []byte, src ref) (int, bool) + 'syscall/js.copyBytesToGo': (sp) => { + sp >>>= 0; + const dst = loadSlice(sp + 8); + const src = loadValue(sp + 32); + if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) { + this.mem.setUint8(sp + 48, 0); + return; + } + const toCopy = src.subarray(0, dst.length); + dst.set(toCopy); + setInt64(sp + 40, toCopy.length); + this.mem.setUint8(sp + 48, 1); + }, + + // func copyBytesToJS(dst ref, src []byte) (int, bool) + 'syscall/js.copyBytesToJS': (sp) => { + sp >>>= 0; + const dst = loadValue(sp + 8); + const src = loadSlice(sp + 16); + if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) { + this.mem.setUint8(sp + 48, 0); + return; + } + const toCopy = src.subarray(0, dst.length); + dst.set(toCopy); + setInt64(sp + 40, toCopy.length); + this.mem.setUint8(sp + 48, 1); + }, + + debug: (value) => { + console.log(value); + } + } + }; + } + + async run(instance) { + if (!(instance instanceof WebAssembly.Instance)) { + throw new Error('Go.run: WebAssembly.Instance expected'); + } + this._inst = instance; + this.mem = new DataView(this._inst.exports.mem.buffer); + this._values = [ + // JS values that Go currently has references to, indexed by reference id + NaN, + 0, + null, + true, + false, + globalThis, + this + ]; + this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id + this._ids = new Map([ + // mapping from JS values to reference ids + [0, 1], + [null, 2], + [true, 3], + [false, 4], + [globalThis, 5], + [this, 6] + ]); + this._idPool = []; // unused ids that have been garbage collected + this.exited = false; // whether the Go program has exited + + // Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory. + let offset = 4096; + + const strPtr = (str) => { + const ptr = offset; + const bytes = encoder.encode(str + '\0'); + new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes); + offset += bytes.length; + if (offset % 8 !== 0) { + offset += 8 - (offset % 8); + } + return ptr; + }; + + const argc = this.argv.length; + + const argvPtrs = []; + this.argv.forEach((arg) => { + argvPtrs.push(strPtr(arg)); + }); + argvPtrs.push(0); + + const keys = Object.keys(this.env).sort(); + keys.forEach((key) => { + argvPtrs.push(strPtr(`${key}=${this.env[key]}`)); + }); + argvPtrs.push(0); + + const argv = offset; + argvPtrs.forEach((ptr) => { + this.mem.setUint32(offset, ptr, true); + this.mem.setUint32(offset + 4, 0, true); + offset += 8; + }); + + // The linker guarantees global data starts from at least wasmMinDataAddr. + // Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr. + const wasmMinDataAddr = 4096 + 8192; + if (offset >= wasmMinDataAddr) { + throw new Error('total length of command line and environment variables exceeds limit'); + } + + this._inst.exports.run(argc, argv); + if (this.exited) { + this._resolveExitPromise(); + } + await this._exitPromise; + } + + _resume() { + if (this.exited) { + throw new Error('Go program has already exited'); + } + this._inst.exports.resume(); + if (this.exited) { + this._resolveExitPromise(); + } + } + + _makeFuncWrapper(id) { + const go = this; + return function () { + const event = { id: id, this: this, args: arguments }; + go._pendingEvent = event; + go._resume(); + return event.result; + }; + } + }; })();