LibJS: Convert to_u32() to ThrowCompletionOr

Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp

@@ -1117,13 +1117,11 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
         }
     } else if (parameter.type->name == "unsigned long") {
         scoped_generator.append(R"~~~(
-    auto @cpp_name@ = @js_name@@js_suffix@.to_u32(global_object);
-    if (vm.exception())
-        @return_statement@
+    auto @cpp_name@ = TRY_OR_DISCARD(@js_name@@js_suffix@.to_u32(global_object));
 )~~~");
     } else if (parameter.type->name == "unsigned short") {
         scoped_generator.append(R"~~~(
-    auto @cpp_name@ = (u16)@js_name@@js_suffix@.to_u32(global_object);
+    auto @cpp_name@ = @js_name@@js_suffix@.to_u16(global_object);
     if (vm.exception())
         @return_statement@
 )~~~");

Userland/Libraries/LibJS/Runtime/Array.cpp

@@ -72,9 +72,7 @@ bool Array::set_length(PropertyDescriptor const& property_descriptor)
     size_t new_length = indexed_properties().array_like_size();
     if (property_descriptor.value.has_value()) {
         // 3. Let newLen be ? ToUint32(Desc.[[Value]]).
-        new_length = property_descriptor.value->to_u32(global_object);
-        if (vm.exception())
-            return {};
+        new_length = TRY_OR_DISCARD(property_descriptor.value->to_u32(global_object));
         // 4. Let numberLen be ? ToNumber(Desc.[[Value]]).
         auto number_length = TRY_OR_DISCARD(property_descriptor.value->to_number(global_object));
         // 5. If newLen is not the same value as numberLen, throw a RangeError exception.

Userland/Libraries/LibJS/Runtime/ArrayBuffer.h

@@ -176,7 +176,7 @@ static ByteBuffer numeric_to_raw_bytes(GlobalObject& global_object, Value value,
                 int_value = value.to_i8(global_object);
         } else {
             if constexpr (sizeof(UnderlyingBufferDataType) == 4)
-                int_value = value.to_u32(global_object);
+                int_value = MUST(value.to_u32(global_object));
             else if constexpr (sizeof(UnderlyingBufferDataType) == 2)
                 int_value = value.to_u16(global_object);
             else if constexpr (!IsSame<T, ClampedU8>)

Userland/Libraries/LibJS/Runtime/ArrayConstructor.cpp

@@ -68,7 +68,7 @@ Value ArrayConstructor::construct(FunctionObject& new_target)
             MUST(array->create_data_property_or_throw(0, length));
             int_length = 1;
         } else {
-            int_length = length.to_u32(global_object());
+            int_length = MUST(length.to_u32(global_object()));
             if (int_length != length.as_double()) {
                 vm.throw_exception<RangeError>(global_object(), ErrorType::InvalidLength, "array");
                 return {};

Userland/Libraries/LibJS/Runtime/MathObject.cpp

@@ -300,9 +300,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::sign)
 // 21.3.2.11 Math.clz32 ( x ), https://tc39.es/ecma262/#sec-math.clz32
 JS_DEFINE_NATIVE_FUNCTION(MathObject::clz32)
 {
-    auto number = vm.argument(0).to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto number = TRY_OR_DISCARD(vm.argument(0).to_u32(global_object));
     if (number == 0)
         return Value(32);
     return Value(__builtin_clz(number));
@@ -479,12 +477,8 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::hypot)
 // 21.3.2.19 Math.imul ( x, y ), https://tc39.es/ecma262/#sec-math.imul
 JS_DEFINE_NATIVE_FUNCTION(MathObject::imul)
 {
-    auto a = vm.argument(0).to_u32(global_object);
-    if (vm.exception())
-        return {};
-    auto b = vm.argument(1).to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto a = TRY_OR_DISCARD(vm.argument(0).to_u32(global_object));
+    auto b = TRY_OR_DISCARD(vm.argument(1).to_u32(global_object));
     return Value(static_cast<i32>(a * b));
 }
 

Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp

@@ -639,11 +639,8 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_split)
     size_t array_length = 0;
 
     auto limit = NumericLimits<u32>::max();
-    if (!vm.argument(1).is_undefined()) {
-        limit = vm.argument(1).to_u32(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!vm.argument(1).is_undefined())
+        limit = TRY_OR_DISCARD(vm.argument(1).to_u32(global_object));
 
     if (limit == 0)
         return array;

Userland/Libraries/LibJS/Runtime/StringPrototype.cpp

@@ -706,11 +706,8 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::split)
     size_t array_length = 0;
 
     auto limit = NumericLimits<u32>::max();
-    if (!limit_argument.is_undefined()) {
-        limit = limit_argument.to_u32(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!limit_argument.is_undefined())
+        limit = TRY_OR_DISCARD(limit_argument.to_u32(global_object));
 
     auto separator = TRY_OR_DISCARD(separator_argument.to_utf16_string(global_object));
 

Userland/Libraries/LibJS/Runtime/Value.cpp

@@ -592,9 +592,9 @@ ThrowCompletionOr<i32> Value::to_i32(GlobalObject& global_object) const
 }
 
 // 7.1.7 ToUint32 ( argument ), https://tc39.es/ecma262/#sec-touint32
-u32 Value::to_u32(GlobalObject& global_object) const
+ThrowCompletionOr<u32> Value::to_u32(GlobalObject& global_object) const
 {
-    double value = TRY_OR_DISCARD(to_number(global_object)).as_double();
+    double value = TRY(to_number(global_object)).as_double();
     if (!isfinite(value) || value == 0)
         return 0;
     auto int_val = floor(fabs(value));
@@ -925,7 +925,7 @@ Value left_shift(GlobalObject& global_object, Value lhs, Value rhs)
             return lhs_numeric;
         // Ok, so this performs toNumber() again but that "can't" throw
         auto lhs_i32 = MUST(lhs_numeric.to_i32(global_object));
-        auto rhs_u32 = rhs_numeric.to_u32(global_object) % 32;
+        auto rhs_u32 = MUST(rhs_numeric.to_u32(global_object)) % 32;
         return Value(lhs_i32 << rhs_u32);
     }
     if (both_bigint(lhs_numeric, rhs_numeric)) {
@@ -951,7 +951,7 @@ Value right_shift(GlobalObject& global_object, Value lhs, Value rhs)
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
         auto lhs_i32 = MUST(lhs_numeric.to_i32(global_object));
-        auto rhs_u32 = rhs_numeric.to_u32(global_object) % 32;
+        auto rhs_u32 = MUST(rhs_numeric.to_u32(global_object)) % 32;
         return Value(lhs_i32 >> rhs_u32);
     }
     if (both_bigint(lhs_numeric, rhs_numeric)) {
@@ -974,8 +974,8 @@ Value unsigned_right_shift(GlobalObject& global_object, Value lhs, Value rhs)
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
         // Ok, so this performs toNumber() again but that "can't" throw
-        auto lhs_u32 = lhs_numeric.to_u32(global_object);
-        auto rhs_u32 = rhs_numeric.to_u32(global_object) % 32;
+        auto lhs_u32 = MUST(lhs_numeric.to_u32(global_object));
+        auto rhs_u32 = MUST(rhs_numeric.to_u32(global_object)) % 32;
         return Value(lhs_u32 >> rhs_u32);
     }
     global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperator, "unsigned right-shift");

Userland/Libraries/LibJS/Runtime/Value.h

@@ -316,7 +316,7 @@ public:
     ThrowCompletionOr<double> to_double(GlobalObject&) const;
     ThrowCompletionOr<StringOrSymbol> to_property_key(GlobalObject&) const;
     ThrowCompletionOr<i32> to_i32(GlobalObject& global_object) const;
-    u32 to_u32(GlobalObject&) const;
+    ThrowCompletionOr<u32> to_u32(GlobalObject&) const;
     i16 to_i16(GlobalObject&) const;
     u16 to_u16(GlobalObject&) const;
     i8 to_i8(GlobalObject&) const;

Userland/Libraries/LibWeb/Bindings/ImageConstructor.cpp

@@ -47,16 +47,12 @@ JS::Value ImageConstructor::construct(FunctionObject&)
     auto image_element = DOM::create_element(document, HTML::TagNames::img, Namespace::HTML);
 
     if (vm().argument_count() > 0) {
-        u32 width = vm().argument(0).to_u32(global_object());
-        if (vm().exception())
-            return {};
+        u32 width = TRY_OR_DISCARD(vm().argument(0).to_u32(global_object()));
         image_element->set_attribute(HTML::AttributeNames::width, String::formatted("{}", width));
     }
 
     if (vm().argument_count() > 1) {
-        u32 height = vm().argument(1).to_u32(global_object());
-        if (vm().exception())
-            return {};
+        u32 height = TRY_OR_DISCARD(vm().argument(1).to_u32(global_object()));
         image_element->set_attribute(HTML::AttributeNames::height, String::formatted("{}", height));
     }
 

Userland/Libraries/LibWeb/WebAssembly/WebAssemblyMemoryConstructor.cpp

@@ -41,17 +41,12 @@ JS::Value WebAssemblyMemoryConstructor::construct(FunctionObject&)
         return {};
     }
 
-    auto initial = initial_value.to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto initial = TRY_OR_DISCARD(initial_value.to_u32(global_object));
 
     Optional<u32> maximum;
 
-    if (!maximum_value.is_empty()) {
-        maximum = maximum_value.to_u32(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!maximum_value.is_empty())
+        maximum = TRY_OR_DISCARD(maximum_value.to_u32(global_object));
 
     auto address = WebAssemblyObject::s_abstract_machine.store().allocate(Wasm::MemoryType { Wasm::Limits { initial, maximum } });
     if (!address.has_value()) {

Userland/Libraries/LibWeb/WebAssembly/WebAssemblyMemoryPrototype.cpp

@@ -19,9 +19,7 @@ void WebAssemblyMemoryPrototype::initialize(JS::GlobalObject& global_object)
 
 JS_DEFINE_NATIVE_FUNCTION(WebAssemblyMemoryPrototype::grow)
 {
-    auto page_count = vm.argument(0).to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto page_count = TRY_OR_DISCARD(vm.argument(0).to_u32(global_object));
     auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
     if (!is<WebAssemblyMemoryObject>(this_object)) {
         vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotAnObjectOfType, "WebAssembly.Memory");

Userland/Libraries/LibWeb/WebAssembly/WebAssemblyTableConstructor.cpp

@@ -56,17 +56,12 @@ JS::Value WebAssemblyTableConstructor::construct(FunctionObject&)
     auto initial_value = TRY_OR_DISCARD(descriptor->get("initial"));
     auto maximum_value = TRY_OR_DISCARD(descriptor->get("maximum"));
 
-    auto initial = initial_value.to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto initial = TRY_OR_DISCARD(initial_value.to_u32(global_object));
 
     Optional<u32> maximum;
 
-    if (!maximum_value.is_undefined()) {
-        maximum = maximum_value.to_u32(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!maximum_value.is_undefined())
+        maximum = TRY_OR_DISCARD(maximum_value.to_u32(global_object));
 
     if (maximum.has_value() && maximum.value() < initial) {
         vm.throw_exception<JS::RangeError>(global_object, "maximum should be larger than or equal to initial");

Userland/Libraries/LibWeb/WebAssembly/WebAssemblyTablePrototype.cpp

@@ -21,9 +21,8 @@ void WebAssemblyTablePrototype::initialize(JS::GlobalObject& global_object)
 
 JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::grow)
 {
-    auto delta = vm.argument(0).to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto delta = TRY_OR_DISCARD(vm.argument(0).to_u32(global_object));
+
     auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
     if (!is<WebAssemblyTableObject>(this_object)) {
         vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::NotAnObjectOfType, "WebAssembly.Table");
@@ -59,9 +58,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::grow)
 
 JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::get)
 {
-    auto index = vm.argument(0).to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto index = TRY_OR_DISCARD(vm.argument(0).to_u32(global_object));
 
     auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
     if (!is<WebAssemblyTableObject>(this_object)) {
@@ -89,9 +86,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::get)
 
 JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::set)
 {
-    auto index = vm.argument(0).to_u32(global_object);
-    if (vm.exception())
-        return {};
+    auto index = TRY_OR_DISCARD(vm.argument(0).to_u32(global_object));
 
     auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
     if (!is<WebAssemblyTableObject>(this_object)) {