57dc179b1f
This will make it easier to support both string types at the same time while we convert code, and tracking down remaining uses. One big exception is Value::to_string() in LibJS, where the name is dictated by the ToString AO.
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/*
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* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/DeprecatedString.h>
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#include <AK/Types.h>
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#include <math.h>
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namespace Web::CSS {
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class Number {
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public:
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enum class Type {
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Number,
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IntegerWithExplicitSign, // This only exists for the nightmarish An+B parsing algorithm
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Integer
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};
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Number()
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: m_value(0)
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, m_type(Type::Number)
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{
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}
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Number(Type type, float value)
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: m_value(value)
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, m_type(type)
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{
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}
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float value() const { return m_value; }
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i64 integer_value() const
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{
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// https://www.w3.org/TR/css-values-4/#numeric-types
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// When a value cannot be explicitly supported due to range/precision limitations, it must be converted
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// to the closest value supported by the implementation, but how the implementation defines "closest"
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// is explicitly undefined as well.
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return llroundf(m_value);
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}
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bool is_integer() const { return m_type == Type::Integer || m_type == Type::IntegerWithExplicitSign; }
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bool is_integer_with_explicit_sign() const { return m_type == Type::IntegerWithExplicitSign; }
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Number operator+(Number const& other) const
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{
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if (is_integer() && other.is_integer())
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return { Type::Integer, m_value + other.m_value };
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return { Type::Number, m_value + other.m_value };
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}
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Number operator-(Number const& other) const
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{
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if (is_integer() && other.is_integer())
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return { Type::Integer, m_value - other.m_value };
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return { Type::Number, m_value - other.m_value };
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}
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Number operator*(Number const& other) const
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{
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if (is_integer() && other.is_integer())
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return { Type::Integer, m_value * other.m_value };
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return { Type::Number, m_value * other.m_value };
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}
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Number operator/(Number const& other) const
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{
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return { Type::Number, m_value / other.m_value };
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}
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DeprecatedString to_deprecated_string() const
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{
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if (m_type == Type::IntegerWithExplicitSign)
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return DeprecatedString::formatted("{:+}", m_value);
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return DeprecatedString::number(m_value);
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}
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bool operator==(Number const& other) const
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{
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return m_type == other.m_type && m_value == other.m_value;
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}
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private:
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float m_value { 0 };
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Type m_type;
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};
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}
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template<>
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struct AK::Formatter<Web::CSS::Number> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Number const& number)
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{
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return Formatter<StringView>::format(builder, number.to_deprecated_string());
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}
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};
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