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Create Zig wrapper generator for js.Function creation

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This allows us to leverage the Caller.Function.call method, which does type
mapping, caching, etc... and allows the Zig function callback to be written like
any other Zig WebAPI function.
This commit is contained in:
Karl Seguin
2026-03-03 11:37:40 +08:00
parent d2da0b7c0e
commit 10ec4ff814
5 changed files with 57 additions and 79 deletions
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12
src/browser/js/Local.zig
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@@ -82,13 +82,17 @@ pub fn createTypedArray(self: *const Local, comptime array_type: js.ArrayType, s
return .init(self, size);
}
pub fn newFunctionWithData(
pub fn newCallback(
self: *const Local,
comptime callback: *const fn (?*const v8.FunctionCallbackInfo) callconv(.c) void,
data: *anyopaque,
callback: anytype,
data: anytype,
) js.Function {
const external = self.isolate.createExternal(data);
const handle = v8.v8__Function__New__DEFAULT2(self.handle, callback, @ptrCast(external)).?;
const handle = v8.v8__Function__New__DEFAULT2(self.handle, struct {
fn wrap(info_handle: ?*const js.v8.FunctionCallbackInfo) callconv(.c) void {
Caller.Function.call(@TypeOf(data), info_handle.?, callback, .{ .embedded_receiver = true });
}
}.wrap, @ptrCast(external)).?;
return .{ .local = self, .handle = handle };
}