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LibJS: Add spec comments to Value::to_string()
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1 changed files with 23 additions and 8 deletions
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@ -379,22 +379,37 @@ ThrowCompletionOr<DeprecatedString> Value::to_string(VM& vm) const
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return number_to_string(m_value.as_double);
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switch (m_value.tag) {
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case UNDEFINED_TAG:
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return "undefined"sv;
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case NULL_TAG:
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return "null"sv;
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case BOOLEAN_TAG:
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return as_bool() ? "true"sv : "false"sv;
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case INT32_TAG:
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return DeprecatedString::number(as_i32());
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// 1. If argument is a String, return argument.
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case STRING_TAG:
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return as_string().deprecated_string();
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// 2. If argument is a Symbol, throw a TypeError exception.
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case SYMBOL_TAG:
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return vm.throw_completion<TypeError>(ErrorType::Convert, "symbol", "string");
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// 3. If argument is undefined, return "undefined".
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case UNDEFINED_TAG:
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return "undefined"sv;
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// 4. If argument is null, return "null".
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case NULL_TAG:
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return "null"sv;
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// 5. If argument is true, return "true".
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// 6. If argument is false, return "false".
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case BOOLEAN_TAG:
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return as_bool() ? "true"sv : "false"sv;
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// 7. If argument is a Number, return Number::toString(argument, 10).
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case INT32_TAG:
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return DeprecatedString::number(as_i32());
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// 8. If argument is a BigInt, return BigInt::toString(argument, 10).
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case BIGINT_TAG:
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return as_bigint().big_integer().to_base(10);
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// 9. Assert: argument is an Object.
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case OBJECT_TAG: {
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// 10. Let primValue be ? ToPrimitive(argument, string).
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auto primitive_value = TRY(to_primitive(vm, PreferredType::String));
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// 11. Assert: primValue is not an Object.
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VERIFY(!primitive_value.is_object());
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// 12. Return ? ToString(primValue).
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return primitive_value.to_string(vm);
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}
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default:
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