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jsValueToZig for fixed sized arrays

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sjorsdonkers
2025-09-05 16:34:07 +02:00
committed by Muki Kiboigo
parent 463440bce4
commit f68f184c68
2 changed files with 44 additions and 1 deletions
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2
src/browser/fetch/Headers.zig
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@@ -62,7 +62,7 @@ headers: HeaderHashMap = .empty,
// 3. Another Headers object.
pub const HeadersInit = union(enum) {
// List of Pairs of []const u8
strings: []const []const []const u8,
strings: []const [2][]const u8,
headers: *Headers,
};

43
src/runtime/js.zig
View File

@@ -1130,6 +1130,19 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
},
else => {},
},
.array => |arr| {
// Retrieve fixed-size array as slice then copy it
const slice_type = []arr.child;
const slice_value = try self.jsValueToZig(named_function, slice_type, js_value);
if (slice_value.len != arr.len) {
// Exact length match, we could allow smaller arrays, but we would not be able to communicate how many were written
return error.InvalidArgument;
}
var result: T = undefined;
@memcpy(&result, slice_value[0..arr.len]);
return result;
},
.@"struct" => {
return try (self.jsValueToStruct(named_function, T, js_value)) orelse {
return error.InvalidArgument;
@@ -1413,6 +1426,36 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
},
else => {},
},
.array => |arr| {
// Retrieve fixed-size array as slice then probe
const slice_type = []arr.child;
switch (try self.probeJsValueToZig(named_function, slice_type, js_value)) {
.value => |slice_value| {
if (slice_value.len == arr.len) {
return .{ .ok = {} };
}
return .{ .invalid = {} };
},
.ok => {
// Exact length match, we could allow smaller arrays as .compatible, but we would not be able to communicate how many were written
if (js_value.isArray()) {
const js_arr = js_value.castTo(v8.Array);
if (js_arr.length() == arr.len) {
return .{ .ok = {} };
}
} else if (js_value.isString() and arr.child == u8) {
const str = try valueToString(self.call_arena, js_value, self.isolate, self.v8_context);
if (str.len == arr.len) {
return .{ .ok = {} };
}
}
return .{ .invalid = {} };
},
.compatible => return .{ .compatible = {} },
.coerce => return .{ .coerce = {} },
.invalid => return .{ .invalid = {} },
}
},
.@"struct" => {
// We don't want to duplicate the code for this, so we call
// the actual conversion function.