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LibSQL: Allow constructing SQL values from a String

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LibSQL still uses ByteString internally for storage, but to help outside
application port to String, add helpers to construct values from String
and to convert a value to a String.
This commit is contained in:
Timothy Flynn 2024-01-26 11:35:39 -05:00 committed by Andreas Kling
parent c4820838bf
commit 30fae8fa1d
Notes: sideshowbarker 2024-07-17 18:08:55 +09:00 
Author: https://github.com/trflynn89
Commit: https://github.com/SerenityOS/serenity/commit/30fae8fa1d
Pull-request: https://github.com/SerenityOS/serenity/pull/22951
2 changed files with 31 additions and 2 deletions
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28
Userland/Libraries/LibSQL/Value.cpp
View file

@ -1,6 +1,6 @@
/*
* Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
* Copyright (c) 2022, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2022-2024, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -97,6 +97,11 @@ Value::Value(SQLType type)
{
}
Value::Value(String value)
: Value(value.to_byte_string())
{
}
Value::Value(ByteString value)
: m_type(SQLType::Text)
, m_value(move(value))
@ -214,6 +219,27 @@ bool Value::is_int() const
return m_value.has_value() && (m_value->has<i64>() || m_value->has<u64>());
}
ErrorOr<String> Value::to_string() const
{
if (is_null())
return String::from_utf8("(null)"sv);
return m_value->visit(
[](ByteString const& value) { return String::from_byte_string(value); },
[](Integer auto value) { return String::number(value); },
[](double value) { return String::number(value); },
[](bool value) { return String::from_utf8(value ? "true"sv : "false"sv); },
[](TupleValue const& value) {
StringBuilder builder;
builder.append('(');
builder.join(',', value.values);
builder.append(')');
return builder.to_string();
});
}
ByteString Value::to_byte_string() const
{
if (is_null())

5
Userland/Libraries/LibSQL/Value.h
View file

@ -1,6 +1,6 @@
/*
* Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
* Copyright (c) 2022, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2022-2024, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -11,6 +11,7 @@
#include <AK/Checked.h>
#include <AK/Format.h>
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/Variant.h>
#include <AK/Vector.h>
@ -39,6 +40,7 @@ class Value {
public:
explicit Value(SQLType sql_type = SQLType::Null);
explicit Value(String);
explicit Value(ByteString);
explicit Value(double);
Value(Value const&);
@ -74,6 +76,7 @@ public:
return *m_value;
}
[[nodiscard]] ErrorOr<String> to_string() const;
[[nodiscard]] ByteString to_byte_string() const;
[[nodiscard]] Optional<double> to_double() const;
[[nodiscard]] Optional<bool> to_bool() const;