6fd44e494c
By taking the std::string by value in the constructor, this allows for
certain situations where copies can be elided entirely (when moving an
instance into the constructor)
e.g.
std::string var = ...
...
... = LiteralString(std::move(var)) // Or whatever other initialization
// is done.
No copy will be done in this case, the move transfers it into the
constructor, and then the move within the initializer list transfers it
into the member variable.
tl;dr: This allows the calling code to potentially construct less
std::string instances by allowing moving into the parameters themselves.
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
/* This file is part of the sirit project.
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* Copyright (c) 2018 ReinUsesLisp
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* This software may be used and distributed according to the terms of the GNU
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* Lesser General Public License version 3 or any later version.
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*/
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#include <string>
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#include "common_types.h"
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#include "literal_string.h"
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namespace Sirit {
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LiteralString::LiteralString(std::string string) : string{std::move(string)} {
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operand_type = OperandType::String;
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}
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LiteralString::~LiteralString() = default;
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void LiteralString::Fetch(Stream& stream) const {
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for (std::size_t i = 0; i < string.size(); i++) {
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stream.Write(static_cast<u8>(string[i]));
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}
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for (std::size_t i = 0; i < 4 - (string.size() % 4); i++) {
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stream.Write(static_cast<u8>(0));
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}
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}
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u16 LiteralString::GetWordCount() const {
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return static_cast<u16>(string.size() / 4 + 1);
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}
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bool LiteralString::operator==(const Operand& other) const {
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if (operand_type == other.GetType()) {
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return dynamic_cast<const LiteralString&>(other).string == string;
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}
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return false;
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}
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} // namespace Sirit
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