mach: Rename `js-runtime subproject to sysjs`
This commit is contained in:
iddev5
Stephen Gutekanst
parent
05b0df052d
commit
7a0d39c274
11 changed files with 7 additions and 7 deletions
360
sysjs/src/mach-sysjs.js
Normal file
360
sysjs/src/mach-sysjs.js
Normal file
|
|
@ -0,0 +1,360 @@
|
|||
let text_decoder = new TextDecoder();
|
||||
let text_encoder = new TextEncoder();
|
||||
let log_buf = "";
|
||||
|
||||
let uindex = 0;
|
||||
let indices = [];
|
||||
let values = [];
|
||||
let value_map = {};
|
||||
|
||||
class MemoryBlock {
|
||||
constructor(mem, offset = 0) {
|
||||
this.mem = mem;
|
||||
this.offset = offset;
|
||||
}
|
||||
|
||||
slice(offset) {
|
||||
return new MemoryBlock(this.mem, offset);
|
||||
}
|
||||
|
||||
getMemory() {
|
||||
return new DataView(this.mem, this.offset);
|
||||
}
|
||||
|
||||
getU8(offset) {
|
||||
return this.getMemory().getUint8(offset, true);
|
||||
}
|
||||
|
||||
getU32(offset) {
|
||||
return this.getMemory().getUint32(offset, true);
|
||||
}
|
||||
|
||||
getU64(offset) {
|
||||
const ls = this.getU32(offset);
|
||||
const ms = this.getU32(offset + 4);
|
||||
|
||||
return ls + ms * 4294967296;
|
||||
}
|
||||
|
||||
getF64(offset) {
|
||||
return this.getMemory().getFloat64(offset, true);
|
||||
}
|
||||
|
||||
getString(offset, len) {
|
||||
return text_decoder.decode(new Uint8Array(this.mem, offset, len));
|
||||
}
|
||||
|
||||
setU8(offset, data) {
|
||||
this.getMemory().setUint8(offset, data, true);
|
||||
}
|
||||
|
||||
setU32(offset, data) {
|
||||
this.getMemory().setUint32(offset, data, true);
|
||||
}
|
||||
|
||||
setU64(offset, data) {
|
||||
this.getMemory().setUint32(offset, data, true);
|
||||
this.getMemory().setUint32(offset + 4, Math.floor(data / 4294967296), true);
|
||||
}
|
||||
|
||||
setF64(offset, data) {
|
||||
this.getMemory().setFloat64(offset, data, true);
|
||||
}
|
||||
|
||||
setString(offset, str) {
|
||||
const string = text_encoder.encode(str);
|
||||
const buffer = new Uint8Array(this.mem, offset, string.length);
|
||||
for (let i = 0; i < string.length; i += 1) {
|
||||
buffer[i] = string[i];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const zig = {
|
||||
wasm: undefined,
|
||||
buffer: undefined,
|
||||
|
||||
init(wasm) {
|
||||
this.wasm = wasm;
|
||||
|
||||
values = [];
|
||||
value_map = {};
|
||||
this.addValue(globalThis);
|
||||
},
|
||||
|
||||
addValue(value) {
|
||||
value.__proto__.__uindex = uindex;
|
||||
let idx = indices.pop();
|
||||
if (idx !== undefined) {
|
||||
values[idx] = value;
|
||||
} else {
|
||||
idx = values.push(value) - 1;
|
||||
}
|
||||
value_map[uindex] = idx;
|
||||
uindex += 1;
|
||||
return idx;
|
||||
},
|
||||
|
||||
zigCreateMap() {
|
||||
return zig.addValue(new Map());
|
||||
},
|
||||
|
||||
zigCreateArray() {
|
||||
return zig.addValue(new Array());
|
||||
},
|
||||
|
||||
zigCreateString(str, len) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
return zig.addValue(memory.getString(str, len));
|
||||
},
|
||||
|
||||
zigCreateFunction(id) {
|
||||
return zig.addValue(function () {
|
||||
const args = zig.addValue(arguments);
|
||||
zig.wasm.exports.wasmCallFunction(id, args, arguments.length);
|
||||
const return_value = values[args]["return_value"];
|
||||
zig.zigCleanupObject(args);
|
||||
return return_value;
|
||||
});
|
||||
},
|
||||
|
||||
getType(value) {
|
||||
switch (typeof value) {
|
||||
case "object":
|
||||
switch (value) {
|
||||
case null:
|
||||
return 4;
|
||||
default:
|
||||
return 0;
|
||||
}
|
||||
break;
|
||||
case "number":
|
||||
return 1;
|
||||
case "boolean":
|
||||
return 2;
|
||||
case "string":
|
||||
return 3;
|
||||
case "undefined":
|
||||
return 5;
|
||||
case "function":
|
||||
return 6;
|
||||
}
|
||||
},
|
||||
|
||||
writeObject(block, data, type) {
|
||||
switch (type) {
|
||||
case 0:
|
||||
case 6:
|
||||
block.setU8(0, type);
|
||||
block.setU64(8, data);
|
||||
break;
|
||||
case 1:
|
||||
block.setU8(0, 1);
|
||||
block.setF64(8, data);
|
||||
break;
|
||||
case 2:
|
||||
block.setU8(0, 2);
|
||||
block.setU8(8, data);
|
||||
break;
|
||||
case 3:
|
||||
block.setU8(0, 3);
|
||||
block.setU64(8, data);
|
||||
break;
|
||||
case 4:
|
||||
block.setU8(0, 4);
|
||||
break;
|
||||
case 5:
|
||||
block.setU8(0, 5);
|
||||
break;
|
||||
}
|
||||
},
|
||||
|
||||
readObject(block, memory) {
|
||||
switch (block.getU8(0)) {
|
||||
case 0:
|
||||
case 6:
|
||||
return values[block.getU64(8)];
|
||||
break;
|
||||
case 1:
|
||||
return block.getF64(8);
|
||||
break;
|
||||
case 2:
|
||||
return Boolean(block.getU8(8));
|
||||
break;
|
||||
case 3:
|
||||
return values[block.getU64(8)];
|
||||
break;
|
||||
case 4:
|
||||
return null;
|
||||
break;
|
||||
case 5:
|
||||
return undefined;
|
||||
break;
|
||||
}
|
||||
},
|
||||
|
||||
getPropertyEx(prop, ret_ptr, offset) {
|
||||
let len = undefined;
|
||||
const type = this.getType(prop);
|
||||
switch (type) {
|
||||
case 3:
|
||||
len = prop.length;
|
||||
case 0:
|
||||
case 6:
|
||||
if (prop in value_map) {
|
||||
prop = value_map[prop.__uindex];
|
||||
} else {
|
||||
prop = zig.addValue(prop);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (len !== undefined) prop.__proto__.length = len;
|
||||
|
||||
let memory = new MemoryBlock(ret_ptr, offset);
|
||||
zig.writeObject(memory, prop, type);
|
||||
},
|
||||
|
||||
getProperty(prop, ret_ptr) {
|
||||
return zig.getPropertyEx(prop, zig.wasm.exports.memory.buffer, ret_ptr);
|
||||
},
|
||||
|
||||
zigGetProperty(id, name, len, ret_ptr) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
let prop = values[id][memory.getString(name, len)];
|
||||
zig.getProperty(prop, ret_ptr);
|
||||
},
|
||||
|
||||
zigSetProperty(id, name, len, set_ptr) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
values[id][memory.getString(name, len)] = zig.readObject(
|
||||
memory.slice(set_ptr),
|
||||
memory
|
||||
);
|
||||
},
|
||||
|
||||
zigDeleteProperty(id, name, len) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
delete values[id][memory.getString(name, len)];
|
||||
},
|
||||
|
||||
zigGetIndex(id, index, ret_ptr) {
|
||||
let prop = values[id][index];
|
||||
zig.getProperty(prop, ret_ptr);
|
||||
},
|
||||
|
||||
zigSetIndex(id, index, set_ptr) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
values[id][index] = zig.readObject(memory.slice(set_ptr), memory);
|
||||
},
|
||||
|
||||
zigDeleteIndex(id, index) {
|
||||
delete values[id][index];
|
||||
},
|
||||
|
||||
zigGetAttributeCount(id) {
|
||||
let obj = values[id];
|
||||
return Object.keys(obj).length;
|
||||
},
|
||||
|
||||
zigCleanupObject(id) {
|
||||
const idx = Number(id);
|
||||
delete value_map[values[idx].__uindex];
|
||||
delete values[idx];
|
||||
indices.push(idx);
|
||||
},
|
||||
|
||||
zigGetStringLength(val_id) {
|
||||
return values[value_map[val_id]].length;
|
||||
},
|
||||
|
||||
zigGetString(val_id, ptr) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
memory.setString(ptr, values[value_map[val_id]]);
|
||||
},
|
||||
|
||||
zigValueEqual(val, other) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
const val_js = zig.readObject(memory.slice(val), memory);
|
||||
const other_js = zig.readObject(memory.slice(other), memory);
|
||||
return val_js === other_js;
|
||||
},
|
||||
|
||||
zigValueInstanceOf(val, other) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
const val_js = zig.readObject(memory.slice(val), memory);
|
||||
const other_js = zig.readObject(memory.slice(other), memory);
|
||||
return val_js instanceof other_js;
|
||||
},
|
||||
|
||||
functionCall(func, this_param, args, args_len, ret_ptr) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
let argv = [];
|
||||
for (let i = 0; i < args_len; i += 1) {
|
||||
argv.push(zig.readObject(memory.slice(args + i * 16), memory));
|
||||
}
|
||||
|
||||
let result = func.apply(this_param, argv);
|
||||
|
||||
let length = undefined;
|
||||
const type = zig.getType(result);
|
||||
switch (type) {
|
||||
case 3:
|
||||
length = result.length;
|
||||
case 0:
|
||||
case 6:
|
||||
result = zig.addValue(result);
|
||||
break;
|
||||
}
|
||||
|
||||
if (length !== undefined) result.__proto__.length = length;
|
||||
|
||||
zig.writeObject(memory.slice(ret_ptr), result, type);
|
||||
},
|
||||
|
||||
zigFunctionCall(id, name, len, args, args_len, ret_ptr) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
zig.functionCall(
|
||||
values[id][memory.getString(name, len)],
|
||||
values[id],
|
||||
args,
|
||||
args_len,
|
||||
ret_ptr
|
||||
);
|
||||
},
|
||||
|
||||
zigFunctionInvoke(id, args, args_len, ret_ptr) {
|
||||
zig.functionCall(values[id], undefined, args, args_len, ret_ptr);
|
||||
},
|
||||
|
||||
zigGetParamCount(id) {
|
||||
return values[id].length;
|
||||
},
|
||||
|
||||
zigConstructType(id, args, args_len) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
let argv = [];
|
||||
for (let i = 0; i < args_len; i += 1) {
|
||||
argv.push(zig.readObject(memory.slice(args + i * 16), memory));
|
||||
}
|
||||
|
||||
return zig.addValue(new values[id](argv));
|
||||
},
|
||||
|
||||
wzLogWrite(str, len) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
log_buf += memory.getString(str, len);
|
||||
},
|
||||
|
||||
wzLogFlush() {
|
||||
console.log(log_buf);
|
||||
log_buf = "";
|
||||
},
|
||||
|
||||
wzPanic(str, len) {
|
||||
let memory = new MemoryBlock(zig.wasm.exports.memory.buffer);
|
||||
throw Error(memory.getString(str, len));
|
||||
},
|
||||
};
|
||||
|
||||
export { zig };
|
||||
259
sysjs/src/main.zig
Normal file
259
sysjs/src/main.zig
Normal file
|
|
@ -0,0 +1,259 @@
|
|||
const std = @import("std");
|
||||
const Allocator = std.mem.Allocator;
|
||||
const builtin = @import("builtin");
|
||||
|
||||
const js = struct {
|
||||
extern fn zigCreateMap() u32;
|
||||
extern fn zigCreateArray() u32;
|
||||
extern fn zigCreateString(str: [*]const u8, len: u32) u32;
|
||||
extern fn zigCreateFunction(id: *const anyopaque) u32;
|
||||
extern fn zigGetAttributeCount(id: u64) u32;
|
||||
extern fn zigGetProperty(id: u64, name: [*]const u8, len: u32, ret_ptr: *anyopaque) void;
|
||||
extern fn zigSetProperty(id: u64, name: [*]const u8, len: u32, set_ptr: *const anyopaque) void;
|
||||
extern fn zigDeleteProperty(id: u64, name: [*]const u8, len: u32) void;
|
||||
extern fn zigGetIndex(id: u64, index: u32, ret_ptr: *anyopaque) void;
|
||||
extern fn zigSetIndex(id: u64, index: u32, set_ptr: *const anyopaque) void;
|
||||
extern fn zigGetString(val_id: u64, ptr: [*]const u8) void;
|
||||
extern fn zigGetStringLength(val_id: u64) u32;
|
||||
extern fn zigValueEqual(val: *const anyopaque, other: *const anyopaque) bool;
|
||||
extern fn zigValueInstanceOf(val: *const anyopaque, other: *const anyopaque) bool;
|
||||
extern fn zigDeleteIndex(id: u64, index: u32) void;
|
||||
extern fn zigFunctionCall(id: u64, name: [*]const u8, len: u32, args: ?*const anyopaque, args_len: u32, ret_ptr: *anyopaque) void;
|
||||
extern fn zigFunctionInvoke(id: u64, args: ?*const anyopaque, args_len: u32, ret_ptr: *anyopaque) void;
|
||||
extern fn zigGetParamCount(id: u64) u32;
|
||||
extern fn zigConstructType(id: u64, args: ?*const anyopaque, args_len: u32) u32;
|
||||
extern fn zigCleanupObject(id: u64) void;
|
||||
};
|
||||
|
||||
pub const Value = extern struct {
|
||||
tag: Tag,
|
||||
val: extern union {
|
||||
ref: u64,
|
||||
num: f64,
|
||||
bool: bool,
|
||||
},
|
||||
|
||||
pub const Tag = enum(u8) {
|
||||
object,
|
||||
num,
|
||||
bool,
|
||||
str,
|
||||
nulled,
|
||||
undef,
|
||||
func,
|
||||
};
|
||||
|
||||
pub fn is(val: *const Value, comptime tag: Tag) bool {
|
||||
return val.tag == tag;
|
||||
}
|
||||
|
||||
pub fn view(val: *const Value, comptime tag: Tag) switch (tag) {
|
||||
.object => Object,
|
||||
.num => f64,
|
||||
.bool => bool,
|
||||
.str => String,
|
||||
.func => Function,
|
||||
.nulled, .undef => @compileError("Cannot get null or undefined as a value"),
|
||||
} {
|
||||
return switch (tag) {
|
||||
.object => Object{ .ref = val.val.ref },
|
||||
.num => val.val.num,
|
||||
.bool => val.val.bool,
|
||||
.str => String{ .ref = val.val.ref },
|
||||
.func => Function{ .ref = val.val.ref },
|
||||
else => unreachable,
|
||||
};
|
||||
}
|
||||
|
||||
pub fn eql(val: *const Value, other: Value) bool {
|
||||
if (val.tag != other.tag)
|
||||
return false;
|
||||
|
||||
return switch (val.tag) {
|
||||
.num => val.val.num == other.val.num,
|
||||
.bool => val.val.bool == other.val.bool,
|
||||
// Using JS equality (===) is better here since lets say a ref can be dangling
|
||||
else => js.zigValueEqual(val, &other),
|
||||
};
|
||||
}
|
||||
|
||||
pub fn instanceOf(val: *const Value, other: Value) bool {
|
||||
return js.zigValueInstanceOf(val, &other);
|
||||
}
|
||||
|
||||
pub fn format(val: *const Value, comptime _: []const u8, _: std.fmt.FormatOptions, writer: anytype) !void {
|
||||
switch (val.tag) {
|
||||
.object => try writer.print("Object@{}({})", .{ val.val.ref, val.view(.object).attributeCount() }),
|
||||
.num => if (val.val.num > 10000)
|
||||
try writer.print("{e}", .{val.val.num})
|
||||
else
|
||||
try writer.print("{d}", .{val.val.num}),
|
||||
.bool => try writer.writeAll(if (val.view(.bool)) "true" else "false"),
|
||||
.str => try writer.print("String@{}({})", .{ val.val.ref, val.view(.str).getLength() }),
|
||||
.func => try writer.print("Function@{}({})", .{ val.val.ref, val.view(.func).paramCount() }),
|
||||
.nulled => try writer.writeAll("null"),
|
||||
.undef => try writer.writeAll("undefined"),
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
pub const Object = struct {
|
||||
ref: u64,
|
||||
|
||||
pub fn deinit(obj: *const Object) void {
|
||||
js.zigCleanupObject(obj.ref);
|
||||
}
|
||||
|
||||
pub fn toValue(obj: *const Object) Value {
|
||||
return .{ .tag = .object, .val = .{ .ref = obj.ref } };
|
||||
}
|
||||
|
||||
pub fn attributeCount(obj: *const Object) usize {
|
||||
return js.zigGetAttributeCount(obj.ref);
|
||||
}
|
||||
|
||||
pub fn get(obj: *const Object, prop: []const u8) Value {
|
||||
var ret: Value = undefined;
|
||||
js.zigGetProperty(obj.ref, prop.ptr, @intCast(u32, prop.len), &ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
pub fn set(obj: *const Object, prop: []const u8, value: Value) void {
|
||||
js.zigSetProperty(obj.ref, prop.ptr, @intCast(u32, prop.len), &value);
|
||||
}
|
||||
|
||||
pub fn delete(obj: *const Object, prop: []const u8) void {
|
||||
js.zigDeleteProperty(obj.ref, prop.ptr, @intCast(u32, prop.len));
|
||||
}
|
||||
|
||||
pub fn getIndex(obj: *const Object, index: u32) Value {
|
||||
var ret: Value = undefined;
|
||||
js.zigGetIndex(obj.ref, index, &ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
pub fn setIndex(obj: *const Object, index: u32, value: Value) void {
|
||||
js.zigSetIndex(obj.ref, index, &value);
|
||||
}
|
||||
|
||||
pub fn deleteIndex(obj: *const Object, index: u32) void {
|
||||
js.zigDeleteIndex(obj.ref, index);
|
||||
}
|
||||
|
||||
pub fn call(obj: *const Object, fun: []const u8, args: []const Value) Value {
|
||||
var ret: Value = undefined;
|
||||
js.zigFunctionCall(obj.ref, fun.ptr, fun.len, args.ptr, args.len, &ret);
|
||||
return ret;
|
||||
}
|
||||
};
|
||||
|
||||
pub const Function = struct {
|
||||
ref: u64,
|
||||
|
||||
pub fn deinit(func: *const Function) void {
|
||||
js.zigCleanupObject(func.ref);
|
||||
}
|
||||
|
||||
pub fn toValue(func: *const Function) Value {
|
||||
return .{ .tag = .func, .val = .{ .ref = func.ref } };
|
||||
}
|
||||
|
||||
pub fn paramCount(func: *const Function) usize {
|
||||
// FIXME: native functions would always return 0
|
||||
return js.zigGetParamCount(func.ref);
|
||||
}
|
||||
|
||||
pub fn construct(func: *const Function, args: []const Value) Object {
|
||||
return .{ .ref = js.zigConstructType(func.ref, args.ptr, args.len) };
|
||||
}
|
||||
|
||||
pub fn invoke(func: *const Function, args: []const Value) Value {
|
||||
var ret: Value = undefined;
|
||||
js.zigFunctionInvoke(func.ref, args.ptr, args.len, &ret);
|
||||
return ret;
|
||||
}
|
||||
};
|
||||
|
||||
pub const String = struct {
|
||||
ref: u64,
|
||||
|
||||
pub fn deinit(string: *const String) void {
|
||||
js.zigCleanupObject(string.ref);
|
||||
}
|
||||
|
||||
pub fn toValue(string: *const String) Value {
|
||||
return .{ .tag = .str, .val = .{ .ref = string.ref } };
|
||||
}
|
||||
|
||||
pub fn getLength(string: *const String) usize {
|
||||
return js.zigGetStringLength(string.ref);
|
||||
}
|
||||
|
||||
pub fn getOwnedSlice(string: *const String, allocator: std.mem.Allocator) ![]const u8 {
|
||||
var slice = try allocator.alloc(u8, string.getLength());
|
||||
errdefer allocator.free(slice);
|
||||
js.zigGetString(string.ref, slice.ptr);
|
||||
return slice;
|
||||
}
|
||||
};
|
||||
|
||||
export fn wasmCallFunction(id: *anyopaque, args: u32, len: u32) void {
|
||||
const obj = Object{ .ref = args };
|
||||
if (builtin.zig_backend == .stage1) {
|
||||
obj.set("return_value", functions.items[@ptrToInt(id) - 1](obj, len));
|
||||
} else {
|
||||
var func = @ptrCast(*FunType, @alignCast(std.meta.alignment(*FunType), id));
|
||||
obj.set("return_value", func(obj, len));
|
||||
}
|
||||
}
|
||||
|
||||
pub fn global() Object {
|
||||
return Object{ .ref = 0 };
|
||||
}
|
||||
|
||||
pub fn createMap() Object {
|
||||
return .{ .ref = js.zigCreateMap() };
|
||||
}
|
||||
|
||||
pub fn createArray() Object {
|
||||
return .{ .ref = js.zigCreateArray() };
|
||||
}
|
||||
|
||||
pub fn createString(string: []const u8) String {
|
||||
return .{ .ref = js.zigCreateString(string.ptr, string.len) };
|
||||
}
|
||||
|
||||
pub fn createNumber(num: f64) Value {
|
||||
return .{ .tag = .num, .val = .{ .num = num } };
|
||||
}
|
||||
|
||||
pub fn createBool(val: bool) Value {
|
||||
return .{ .tag = .bool, .val = .{ .bool = val } };
|
||||
}
|
||||
|
||||
pub fn createNull() Value {
|
||||
return .{ .tag = .nulled, .val = undefined };
|
||||
}
|
||||
|
||||
pub fn createUndefined() Value {
|
||||
return .{ .tag = .undef, .val = undefined };
|
||||
}
|
||||
|
||||
const FunType = fn (args: Object, args_len: u32) Value;
|
||||
|
||||
var functions: std.ArrayListUnmanaged(FunType) = .{};
|
||||
|
||||
pub fn createFunction(fun: FunType) Function {
|
||||
if (builtin.zig_backend == .stage1) {
|
||||
functions.append(std.heap.page_allocator, fun) catch unreachable;
|
||||
return .{ .ref = js.zigCreateFunction(@intToPtr(*anyopaque, functions.items.len)) };
|
||||
}
|
||||
return .{ .ref = js.zigCreateFunction(&fun) };
|
||||
}
|
||||
|
||||
pub fn constructType(t: []const u8, args: []const Value) Object {
|
||||
const constructor = global().get(t).view(.func);
|
||||
defer constructor.deinit();
|
||||
|
||||
return constructor.construct(args);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue