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LibJS: Define Value::to_string to convert a Value to a String

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Timothy Flynn 2023-01-13 12:23:26 -05:00 • committed by Linus Groh
parent afeb7273cc
commit c9056b824e
2 changed files with 16 additions and 9 deletions
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24
Userland/Libraries/LibJS/Runtime/Value.cpp
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@ -393,34 +393,34 @@ ThrowCompletionOr<PrimitiveString*> Value::to_primitive_string(VM& vm)
}
// 7.1.17 ToString ( argument ), https://tc39.es/ecma262/#sec-tostring
ThrowCompletionOr<DeprecatedString> Value::to_deprecated_string(VM& vm) const
ThrowCompletionOr<String> Value::to_string(VM& vm) const
{
if (is_double())
return number_to_deprecated_string(m_value.as_double);
return number_to_string(vm, m_value.as_double);
switch (m_value.tag) {
// 1. If argument is a String, return argument.
case STRING_TAG:
return TRY(as_string().deprecated_string());
return TRY(as_string().utf8_string());
// 2. If argument is a Symbol, throw a TypeError exception.
case SYMBOL_TAG:
return vm.throw_completion<TypeError>(ErrorType::Convert, "symbol", "string");
// 3. If argument is undefined, return "undefined".
case UNDEFINED_TAG:
return "undefined"sv;
return TRY_OR_THROW_OOM(vm, String::from_utf8("undefined"sv));
// 4. If argument is null, return "null".
case NULL_TAG:
return "null"sv;
return TRY_OR_THROW_OOM(vm, String::from_utf8("null"sv));
// 5. If argument is true, return "true".
// 6. If argument is false, return "false".
case BOOLEAN_TAG:
return as_bool() ? "true"sv : "false"sv;
return TRY_OR_THROW_OOM(vm, String::from_utf8(as_bool() ? "true"sv : "false"sv));
// 7. If argument is a Number, return Number::toString(argument, 10).
case INT32_TAG:
return DeprecatedString::number(as_i32());
return TRY_OR_THROW_OOM(vm, String::number(as_i32()));
// 8. If argument is a BigInt, return BigInt::toString(argument, 10).
case BIGINT_TAG:
return as_bigint().big_integer().to_base_deprecated(10);
return TRY_OR_THROW_OOM(vm, as_bigint().big_integer().to_base(10));
// 9. Assert: argument is an Object.
case OBJECT_TAG: {
// 10. Let primValue be ? ToPrimitive(argument, string).
@ -430,13 +430,19 @@ ThrowCompletionOr<DeprecatedString> Value::to_deprecated_string(VM& vm) const
VERIFY(!primitive_value.is_object());
// 12. Return ? ToString(primValue).
return primitive_value.to_deprecated_string(vm);
return primitive_value.to_string(vm);
}
default:
VERIFY_NOT_REACHED();
}
}
// 7.1.17 ToString ( argument ), https://tc39.es/ecma262/#sec-tostring
ThrowCompletionOr<DeprecatedString> Value::to_deprecated_string(VM& vm) const
{
return TRY(to_string(vm)).to_deprecated_string();
}
ThrowCompletionOr<Utf16String> Value::to_utf16_string(VM& vm) const
{
if (is_string())

1
Userland/Libraries/LibJS/Runtime/Value.h
View file

@ -367,6 +367,7 @@ public:
u64 encoded() const { return m_value.encoded; }
ThrowCompletionOr<String> to_string(VM&) const;
ThrowCompletionOr<DeprecatedString> to_deprecated_string(VM&) const;
ThrowCompletionOr<Utf16String> to_utf16_string(VM&) const;
ThrowCompletionOr<PrimitiveString*> to_primitive_string(VM&);