forked from matrix/element-web
Only works on Go 1.14 now
This commit is contained in:
Kegan Dougal
parent
7e15090364
commit
92fe2b8935
|
|
@ -27,12 +27,15 @@
|
|||
}
|
||||
|
||||
if (!global.fs && global.require) {
|
||||
// XXX: require("fs") apparently returns {} in vector-web for webpack reasons
|
||||
// so remove this so the polyfill below kicks in.
|
||||
//
|
||||
// global.fs = require("fs");
|
||||
}
|
||||
|
||||
const enosys = () => {
|
||||
const err = new Error("not implemented");
|
||||
err.code = "ENOSYS";
|
||||
return err;
|
||||
};
|
||||
|
||||
if (!global.fs) {
|
||||
let outputBuf = "";
|
||||
global.fs = {
|
||||
|
|
@ -48,27 +51,53 @@
|
|||
},
|
||||
write(fd, buf, offset, length, position, callback) {
|
||||
if (offset !== 0 || length !== buf.length || position !== null) {
|
||||
throw new Error("not implemented");
|
||||
callback(enosys());
|
||||
return;
|
||||
}
|
||||
const n = this.writeSync(fd, buf);
|
||||
callback(null, n);
|
||||
},
|
||||
open(path, flags, mode, callback) {
|
||||
const err = new Error("not implemented");
|
||||
err.code = "ENOSYS";
|
||||
callback(err);
|
||||
},
|
||||
read(fd, buffer, offset, length, position, callback) {
|
||||
const err = new Error("not implemented");
|
||||
err.code = "ENOSYS";
|
||||
callback(err);
|
||||
},
|
||||
fsync(fd, callback) {
|
||||
callback(null);
|
||||
},
|
||||
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 (!global.process) {
|
||||
global.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 (!global.crypto) {
|
||||
const nodeCrypto = require("crypto");
|
||||
global.crypto = {
|
||||
|
|
@ -116,24 +145,19 @@
|
|||
this._scheduledTimeouts = new Map();
|
||||
this._nextCallbackTimeoutID = 1;
|
||||
|
||||
const mem = () => {
|
||||
// The buffer may change when requesting more memory.
|
||||
return new DataView(this._inst.exports.mem.buffer);
|
||||
}
|
||||
|
||||
const setInt64 = (addr, v) => {
|
||||
mem().setUint32(addr + 0, v, true);
|
||||
mem().setUint32(addr + 4, Math.floor(v / 4294967296), true);
|
||||
this.mem.setUint32(addr + 0, v, true);
|
||||
this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true);
|
||||
}
|
||||
|
||||
const getInt64 = (addr) => {
|
||||
const low = mem().getUint32(addr + 0, true);
|
||||
const high = mem().getInt32(addr + 4, true);
|
||||
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 = mem().getFloat64(addr, true);
|
||||
const f = this.mem.getFloat64(addr, true);
|
||||
if (f === 0) {
|
||||
return undefined;
|
||||
}
|
||||
|
|
@ -141,7 +165,7 @@
|
|||
return f;
|
||||
}
|
||||
|
||||
const id = mem().getUint32(addr, true);
|
||||
const id = this.mem.getUint32(addr, true);
|
||||
return this._values[id];
|
||||
}
|
||||
|
||||
|
|
@ -150,57 +174,62 @@
|
|||
|
||||
if (typeof v === "number") {
|
||||
if (isNaN(v)) {
|
||||
mem().setUint32(addr + 4, nanHead, true);
|
||||
mem().setUint32(addr, 0, true);
|
||||
this.mem.setUint32(addr + 4, nanHead, true);
|
||||
this.mem.setUint32(addr, 0, true);
|
||||
return;
|
||||
}
|
||||
if (v === 0) {
|
||||
mem().setUint32(addr + 4, nanHead, true);
|
||||
mem().setUint32(addr, 1, true);
|
||||
this.mem.setUint32(addr + 4, nanHead, true);
|
||||
this.mem.setUint32(addr, 1, true);
|
||||
return;
|
||||
}
|
||||
mem().setFloat64(addr, v, true);
|
||||
this.mem.setFloat64(addr, v, true);
|
||||
return;
|
||||
}
|
||||
|
||||
switch (v) {
|
||||
case undefined:
|
||||
mem().setFloat64(addr, 0, true);
|
||||
this.mem.setFloat64(addr, 0, true);
|
||||
return;
|
||||
case null:
|
||||
mem().setUint32(addr + 4, nanHead, true);
|
||||
mem().setUint32(addr, 2, true);
|
||||
this.mem.setUint32(addr + 4, nanHead, true);
|
||||
this.mem.setUint32(addr, 2, true);
|
||||
return;
|
||||
case true:
|
||||
mem().setUint32(addr + 4, nanHead, true);
|
||||
mem().setUint32(addr, 3, true);
|
||||
this.mem.setUint32(addr + 4, nanHead, true);
|
||||
this.mem.setUint32(addr, 3, true);
|
||||
return;
|
||||
case false:
|
||||
mem().setUint32(addr + 4, nanHead, true);
|
||||
mem().setUint32(addr, 4, true);
|
||||
this.mem.setUint32(addr + 4, nanHead, true);
|
||||
this.mem.setUint32(addr, 4, true);
|
||||
return;
|
||||
}
|
||||
|
||||
let ref = this._refs.get(v);
|
||||
if (ref === undefined) {
|
||||
ref = this._values.length;
|
||||
this._values.push(v);
|
||||
this._refs.set(v, ref);
|
||||
let id = this._ids.get(v);
|
||||
if (id === undefined) {
|
||||
id = this._idPool.pop();
|
||||
if (id === undefined) {
|
||||
id = this._values.length;
|
||||
}
|
||||
let typeFlag = 0;
|
||||
this._values[id] = v;
|
||||
this._goRefCounts[id] = 0;
|
||||
this._ids.set(v, id);
|
||||
}
|
||||
this._goRefCounts[id]++;
|
||||
let typeFlag = 1;
|
||||
switch (typeof v) {
|
||||
case "string":
|
||||
typeFlag = 1;
|
||||
break;
|
||||
case "symbol":
|
||||
typeFlag = 2;
|
||||
break;
|
||||
case "function":
|
||||
case "symbol":
|
||||
typeFlag = 3;
|
||||
break;
|
||||
case "function":
|
||||
typeFlag = 4;
|
||||
break;
|
||||
}
|
||||
mem().setUint32(addr + 4, nanHead | typeFlag, true);
|
||||
mem().setUint32(addr, ref, true);
|
||||
this.mem.setUint32(addr + 4, nanHead | typeFlag, true);
|
||||
this.mem.setUint32(addr, id, true);
|
||||
}
|
||||
|
||||
const loadSlice = (addr) => {
|
||||
|
|
@ -235,11 +264,13 @@
|
|||
|
||||
// func wasmExit(code int32)
|
||||
"runtime.wasmExit": (sp) => {
|
||||
const code = mem().getInt32(sp + 8, true);
|
||||
const code = this.mem.getInt32(sp + 8, true);
|
||||
this.exited = true;
|
||||
delete this._inst;
|
||||
delete this._values;
|
||||
delete this._refs;
|
||||
delete this._goRefCounts;
|
||||
delete this._ids;
|
||||
delete this._idPool;
|
||||
this.exit(code);
|
||||
},
|
||||
|
||||
|
|
@ -247,20 +278,25 @@
|
|||
"runtime.wasmWrite": (sp) => {
|
||||
const fd = getInt64(sp + 8);
|
||||
const p = getInt64(sp + 16);
|
||||
const n = mem().getInt32(sp + 24, true);
|
||||
const n = this.mem.getInt32(sp + 24, true);
|
||||
fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n));
|
||||
},
|
||||
|
||||
// func nanotime() int64
|
||||
"runtime.nanotime": (sp) => {
|
||||
// func resetMemoryDataView()
|
||||
"runtime.resetMemoryDataView": (sp) => {
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
},
|
||||
|
||||
// func nanotime1() int64
|
||||
"runtime.nanotime1": (sp) => {
|
||||
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
|
||||
},
|
||||
|
||||
// func walltime() (sec int64, nsec int32)
|
||||
"runtime.walltime": (sp) => {
|
||||
// func walltime1() (sec int64, nsec int32)
|
||||
"runtime.walltime1": (sp) => {
|
||||
const msec = (new Date).getTime();
|
||||
setInt64(sp + 8, msec / 1000);
|
||||
mem().setInt32(sp + 16, (msec % 1000) * 1000000, true);
|
||||
this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
|
||||
},
|
||||
|
||||
// func scheduleTimeoutEvent(delay int64) int32
|
||||
|
|
@ -279,12 +315,12 @@
|
|||
},
|
||||
getInt64(sp + 8) + 1, // setTimeout has been seen to fire up to 1 millisecond early
|
||||
));
|
||||
mem().setInt32(sp + 16, id, true);
|
||||
this.mem.setInt32(sp + 16, id, true);
|
||||
},
|
||||
|
||||
// func clearTimeoutEvent(id int32)
|
||||
"runtime.clearTimeoutEvent": (sp) => {
|
||||
const id = mem().getInt32(sp + 8, true);
|
||||
const id = this.mem.getInt32(sp + 8, true);
|
||||
clearTimeout(this._scheduledTimeouts.get(id));
|
||||
this._scheduledTimeouts.delete(id);
|
||||
},
|
||||
|
|
@ -294,6 +330,18 @@
|
|||
crypto.getRandomValues(loadSlice(sp + 8));
|
||||
},
|
||||
|
||||
// func finalizeRef(v ref)
|
||||
"syscall/js.finalizeRef": (sp) => {
|
||||
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) => {
|
||||
storeValue(sp + 24, loadString(sp + 8));
|
||||
|
|
@ -311,6 +359,11 @@
|
|||
Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32));
|
||||
},
|
||||
|
||||
// func valueDelete(v ref, p string)
|
||||
"syscall/js.valueDelete": (sp) => {
|
||||
Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16));
|
||||
},
|
||||
|
||||
// func valueIndex(v ref, i int) ref
|
||||
"syscall/js.valueIndex": (sp) => {
|
||||
storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
|
||||
|
|
@ -330,10 +383,10 @@
|
|||
const result = Reflect.apply(m, v, args);
|
||||
sp = this._inst.exports.getsp(); // see comment above
|
||||
storeValue(sp + 56, result);
|
||||
mem().setUint8(sp + 64, 1);
|
||||
this.mem.setUint8(sp + 64, 1);
|
||||
} catch (err) {
|
||||
storeValue(sp + 56, err);
|
||||
mem().setUint8(sp + 64, 0);
|
||||
this.mem.setUint8(sp + 64, 0);
|
||||
}
|
||||
},
|
||||
|
||||
|
|
@ -345,10 +398,10 @@
|
|||
const result = Reflect.apply(v, undefined, args);
|
||||
sp = this._inst.exports.getsp(); // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
mem().setUint8(sp + 48, 1);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
storeValue(sp + 40, err);
|
||||
mem().setUint8(sp + 48, 0);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
|
|
@ -360,10 +413,10 @@
|
|||
const result = Reflect.construct(v, args);
|
||||
sp = this._inst.exports.getsp(); // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
mem().setUint8(sp + 48, 1);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
storeValue(sp + 40, err);
|
||||
mem().setUint8(sp + 48, 0);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
|
|
@ -387,7 +440,7 @@
|
|||
|
||||
// func valueInstanceOf(v ref, t ref) bool
|
||||
"syscall/js.valueInstanceOf": (sp) => {
|
||||
mem().setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16));
|
||||
this.mem.setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16));
|
||||
},
|
||||
|
||||
// func copyBytesToGo(dst []byte, src ref) (int, bool)
|
||||
|
|
@ -395,13 +448,13 @@
|
|||
const dst = loadSlice(sp + 8);
|
||||
const src = loadValue(sp + 32);
|
||||
if (!(src instanceof Uint8Array)) {
|
||||
mem().setUint8(sp + 48, 0);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
mem().setUint8(sp + 48, 1);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
// func copyBytesToJS(dst ref, src []byte) (int, bool)
|
||||
|
|
@ -409,13 +462,13 @@
|
|||
const dst = loadValue(sp + 8);
|
||||
const src = loadSlice(sp + 16);
|
||||
if (!(dst instanceof Uint8Array)) {
|
||||
mem().setUint8(sp + 48, 0);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
mem().setUint8(sp + 48, 1);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
"debug": (value) => {
|
||||
|
|
@ -427,7 +480,8 @@
|
|||
|
||||
async run(instance) {
|
||||
this._inst = instance;
|
||||
this._values = [ // TODO: garbage collection
|
||||
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,
|
||||
|
|
@ -436,10 +490,10 @@
|
|||
global,
|
||||
this,
|
||||
];
|
||||
this._refs = new Map();
|
||||
this.exited = false;
|
||||
|
||||
const mem = new DataView(this._inst.exports.mem.buffer)
|
||||
this._goRefCounts = []; // 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
|
||||
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;
|
||||
|
|
@ -447,7 +501,7 @@
|
|||
const strPtr = (str) => {
|
||||
const ptr = offset;
|
||||
const bytes = encoder.encode(str + "\0");
|
||||
new Uint8Array(mem.buffer, offset, bytes.length).set(bytes);
|
||||
new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
|
||||
offset += bytes.length;
|
||||
if (offset % 8 !== 0) {
|
||||
offset += 8 - (offset % 8);
|
||||
|
|
@ -461,17 +515,18 @@
|
|||
this.argv.forEach((arg) => {
|
||||
argvPtrs.push(strPtr(arg));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const keys = Object.keys(this.env).sort();
|
||||
argvPtrs.push(keys.length);
|
||||
keys.forEach((key) => {
|
||||
argvPtrs.push(strPtr(`${key}=${this.env[key]}`));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const argv = offset;
|
||||
argvPtrs.forEach((ptr) => {
|
||||
mem.setUint32(offset, ptr, true);
|
||||
mem.setUint32(offset + 4, 0, true);
|
||||
this.mem.setUint32(offset, ptr, true);
|
||||
this.mem.setUint32(offset + 4, 0, true);
|
||||
offset += 8;
|
||||
});
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue