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implement custom elements - i think/hope

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Karl Seguin
2025-06-13 21:16:02 +08:00
committed by Muki Kiboigo
parent 1f45d5b8e4
commit f1ff789334
4 changed files with 80 additions and 72 deletions
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28
src/runtime/js.zig
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@@ -1257,6 +1257,11 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
exception: []const u8,
};
pub fn getName(self: *const Function, allocator: Allocator) ![]const u8 {
const name = self.func.castToFunction().getName();
return valueToString(allocator, name, self.js_context.isolate, self.js_context.v8_context);
}
pub fn withThis(self: *const Function, value: anytype) !Function {
const this_obj = if (@TypeOf(value) == JsObject)
value.js_obj
@@ -1271,7 +1276,7 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
};
}
pub fn newInstance(self: *const Function, instance: anytype, result: *Result) !PersistentObject {
pub fn newInstance(self: *const Function, result: *Result) !JsObject {
const context = self.js_context;
var try_catch: TryCatch = undefined;
@@ -1280,7 +1285,7 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
// This creates a new instance using this Function as a constructor.
// This returns a generic Object
const js_this = self.func.castToFunction().initInstance(context.v8_context, &.{}) orelse {
const js_obj = self.func.castToFunction().initInstance(context.v8_context, &.{}) orelse {
if (try_catch.hasCaught()) {
const allocator = context.call_arena;
result.stack = try_catch.stack(allocator) catch null;
@@ -1292,7 +1297,10 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
return error.JsConstructorFailed;
};
return try context._mapZigInstanceToJs(js_this, instance);
return .{
.js_context = context,
.js_obj = js_obj,
};
}
pub fn call(self: *const Function, comptime T: type, args: anytype) !T {
@@ -1474,6 +1482,11 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
.js_obj = array.castTo(v8.Object),
};
}
pub fn constructorName(self: JsObject, allocator: Allocator) ![]const u8 {
const str = try self.js_obj.getConstructorName();
return jsStringToZig(allocator, str, self.js_context.isolate);
}
};
// This only exists so that we know whether a function wants the opaque
@@ -1496,6 +1509,10 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
pub fn set(self: JsThis, key: []const u8, value: anytype, opts: JsObject.SetOpts) !void {
return self.obj.set(key, value, opts);
}
pub fn constructorName(self: JsThis, allocator: Allocator) ![]const u8 {
return try self.obj.constructorName(allocator);
}
};
pub const TryCatch = struct {
@@ -1808,7 +1825,7 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
// a constructor function, we'll return an error.
if (@hasDecl(Struct, "constructor") == false) {
const iso = caller.isolate;
const js_exception = iso.throwException(createException(iso, "illegal constructor"));
const js_exception = iso.throwException(createException(iso, "Illegal Constructor"));
info.getReturnValue().set(js_exception);
return;
}
@@ -2633,6 +2650,7 @@ fn Caller(comptime E: type, comptime State: type) type {
var js_err: ?v8.Value = switch (err) {
error.InvalidArgument => createTypeException(isolate, "invalid argument"),
error.OutOfMemory => createException(isolate, "out of memory"),
error.IllegalConstructor => createException(isolate, "Illegal Contructor"),
else => blk: {
const func = @field(Struct, named_function.name);
const return_type = @typeInfo(@TypeOf(func)).@"fn".return_type orelse {
@@ -2745,8 +2763,8 @@ fn Caller(comptime E: type, comptime State: type) type {
// a JS argument
if (comptime isJsThis(params[params.len - 1].type.?)) {
@field(args, std.fmt.comptimePrint("{d}", .{params.len - 1 + offset})) = .{ .obj = .{
.js_context = js_context,
.js_obj = info.getThis(),
.executor = self.executor,
} };
// AND the 2nd last parameter is state