mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2024-11-08 00:37:15 +01:00
482 lines
18 KiB
C++
482 lines
18 KiB
C++
#pragma once
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// ------------------------------------------------------------------------------------------------
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#include "Core/Utility.hpp"
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// ------------------------------------------------------------------------------------------------
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#include <algorithm>
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// ------------------------------------------------------------------------------------------------
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#include <Poco/RegularExpression.h>
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// ------------------------------------------------------------------------------------------------
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namespace SqMod {
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/* ------------------------------------------------------------------------------------------------
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*
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*/
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struct PcRegExMatch : public Poco::RegularExpression::Match
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{
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/* --------------------------------------------------------------------------------------------
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* Default constructor.
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*/
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PcRegExMatch() noexcept
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: Poco::RegularExpression::Match{}
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Offset constructor.
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*/
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explicit PcRegExMatch(SQInteger offset) noexcept
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: Poco::RegularExpression::Match{static_cast< std::string::size_type >(offset), 0}
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Explicit constructor.
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*/
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PcRegExMatch(SQInteger offset, SQInteger length) noexcept
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: Poco::RegularExpression::Match{
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static_cast< std::string::size_type >(offset),
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static_cast< std::string::size_type >(length)
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}
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Copy constructor.
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*/
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PcRegExMatch(const PcRegExMatch & o) = default;
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/* --------------------------------------------------------------------------------------------
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* Move constructor.
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*/
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PcRegExMatch(PcRegExMatch && o) noexcept = default;
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/* --------------------------------------------------------------------------------------------
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* Copy assignment operator.
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*/
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PcRegExMatch & operator = (const PcRegExMatch & o) = default;
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/* --------------------------------------------------------------------------------------------
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* Move assignment operator.
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*/
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PcRegExMatch & operator = (PcRegExMatch && o) noexcept = default;
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/* --------------------------------------------------------------------------------------------
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* Retrieve offset.
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*/
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SQMOD_NODISCARD SQInteger GetOffset() const noexcept
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{
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return static_cast< SQInteger >(Poco::RegularExpression::Match::offset);
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}
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/* --------------------------------------------------------------------------------------------
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* Modify offset.
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*/
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void SetOffset(SQInteger value) noexcept
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{
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Poco::RegularExpression::Match::offset = static_cast< std::string::size_type >(value);
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}
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/* --------------------------------------------------------------------------------------------
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* Retrieve length.
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*/
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SQMOD_NODISCARD SQInteger GetLength() const noexcept
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{
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return static_cast< SQInteger >(Poco::RegularExpression::Match::length);
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}
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/* --------------------------------------------------------------------------------------------
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* Modify length.
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*/
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void SetLength(SQInteger value) noexcept
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{
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Poco::RegularExpression::Match::length = static_cast< std::string::size_type >(value);
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}
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};
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/* ------------------------------------------------------------------------------------------------
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*
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*/
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struct PcRegExMatches
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{
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using List = Poco::RegularExpression::MatchVec;
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/* --------------------------------------------------------------------------------------------
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* Internal RegularExpression instance.
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*/
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List m_List;
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/* --------------------------------------------------------------------------------------------
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* Default constructor.
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*/
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PcRegExMatches() = default;
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/* --------------------------------------------------------------------------------------------
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* Copy list constructor.
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*/
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explicit PcRegExMatches(const List & l) // NOLINT(modernize-pass-by-value)
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: m_List{l}
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Move list constructor.
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*/
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explicit PcRegExMatches(List && m) noexcept
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: m_List{std::move(m)}
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Copy constructor.
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*/
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PcRegExMatches(const PcRegExMatches & o) = default;
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/* --------------------------------------------------------------------------------------------
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* Move constructor.
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*/
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PcRegExMatches(PcRegExMatches && o) noexcept = default;
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/* --------------------------------------------------------------------------------------------
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* Copy assignment operator.
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*/
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PcRegExMatches & operator = (const PcRegExMatches & o) = default;
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/* --------------------------------------------------------------------------------------------
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* Move assignment operator.
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*/
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PcRegExMatches & operator = (PcRegExMatches && o) noexcept = default;
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/* --------------------------------------------------------------------------------------------
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* Make sure an index is within range and return the container. Container must exist.
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*/
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List & ValidIdx(SQInteger i)
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{
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if (static_cast< size_t >(i) >= m_List.size())
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{
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STHROWF("Invalid RegEx match list index({})", i);
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}
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return m_List;
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}
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/* --------------------------------------------------------------------------------------------
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* Make sure an index is within range and return the container. Container must exist.
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*/
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SQMOD_NODISCARD const List & ValidIdx(SQInteger i) const
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{
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if (static_cast< size_t >(i) >= m_List.size())
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{
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STHROWF("Invalid RegEx match list index({})", i);
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}
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return m_List;
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}
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/* --------------------------------------------------------------------------------------------
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* Make sure a container instance is populated, then return it.
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*/
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SQMOD_NODISCARD List & ValidPop()
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{
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if (m_List.empty())
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{
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STHROWF("RegEx match list container is empty");
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}
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return m_List;
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}
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/* --------------------------------------------------------------------------------------------
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* Retrieve a value from the container.
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*/
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SQMOD_NODISCARD List::reference Get(SQInteger i)
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{
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return ValidIdx(i).at(ClampL< SQInteger, size_t >(i));
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}
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/* --------------------------------------------------------------------------------------------
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* Retrieve the first element in the container.
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*/
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SQMOD_NODISCARD List::reference Front()
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{
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return ValidPop().front();
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}
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/* --------------------------------------------------------------------------------------------
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* Retrieve the last element in the container.
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*/
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SQMOD_NODISCARD List::reference Back()
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{
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return m_List.back();
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}
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/* --------------------------------------------------------------------------------------------
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* Check if the container has no elements.
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*/
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SQMOD_NODISCARD bool Empty() const
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{
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return m_List.empty();
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}
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/* --------------------------------------------------------------------------------------------
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* Retrieve the number of elements in the container.
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*/
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SQMOD_NODISCARD SQInteger Size() const
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{
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return static_cast< SQInteger >(m_List.size());
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}
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/* --------------------------------------------------------------------------------------------
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* Retrieve the number of elements that the container has currently allocated space for.
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*/
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SQMOD_NODISCARD SQInteger Capacity() const
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{
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return static_cast< SQInteger >(m_List.capacity());
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}
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/* --------------------------------------------------------------------------------------------
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* Increase the capacity of the container to a value that's greater or equal to the one specified.
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*/
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PcRegExMatches & Reserve(SQInteger n)
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{
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m_List.reserve(ClampL< SQInteger, size_t >(n));
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return *this;
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}
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/* --------------------------------------------------------------------------------------------
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* Request the removal of unused capacity.
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*/
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void Compact()
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{
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m_List.shrink_to_fit();
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}
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/* --------------------------------------------------------------------------------------------
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* Erase all elements from the container.
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*/
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void Clear()
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{
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m_List.clear();
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}
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/* --------------------------------------------------------------------------------------------
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* Pop the last element in the container.
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*/
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void Pop()
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{
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ValidPop().pop_back();
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}
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/* --------------------------------------------------------------------------------------------
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* Erase the element at a certain position.
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*/
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void EraseAt(SQInteger i)
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{
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m_List.erase(ValidIdx(i).begin() + static_cast< size_t >(i));
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}
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/* --------------------------------------------------------------------------------------------
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* Erase a certain amount of elements starting from a specific position.
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*/
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void EraseFrom(SQInteger i, SQInteger n)
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{
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m_List.erase(ValidIdx(i).begin() + static_cast< size_t >(i),
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ValidIdx(i + n).begin() + static_cast< size_t >(i + n));
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}
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/* --------------------------------------------------------------------------------------------
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* Iterate all values through a functor.
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*/
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void Each(Function & fn) const
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{
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for (const auto & e : m_List)
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{
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fn.Execute(static_cast< SQInteger >(e.offset), static_cast< SQInteger >(e.length));
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}
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}
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/* --------------------------------------------------------------------------------------------
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* Iterate values in range through a functor.
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*/
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void EachRange(SQInteger p, SQInteger n, Function & fn) const
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{
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std::for_each(ValidIdx(p).begin() + static_cast< size_t >(p),
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ValidIdx(p + n).begin() + static_cast< size_t >(p + n),
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[&](List::const_reference & e) {
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fn.Execute(static_cast< SQInteger >(e.offset), static_cast< SQInteger >(e.length));
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});
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}
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/* --------------------------------------------------------------------------------------------
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* Iterate all values through a functor until stopped (i.e false is returned).
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*/
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void While(Function & fn) const
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{
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for (const auto & e : m_List)
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{
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auto ret = fn.Eval(static_cast< SQInteger >(e.offset), static_cast< SQInteger >(e.length));
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// (null || true) == continue & false == break
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if (!ret.IsNull() || !ret.template Cast< bool >())
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{
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break;
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}
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}
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}
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/* --------------------------------------------------------------------------------------------
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* Iterate values in range through a functor until stopped (i.e false is returned).
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*/
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void WhileRange(SQInteger p, SQInteger n, Function & fn) const
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{
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auto itr = ValidIdx(p).begin() + static_cast< size_t >(p);
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auto end = ValidIdx(p + n).begin() + static_cast< size_t >(p + n);
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for (; itr != end; ++itr)
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{
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auto ret = fn.Eval(static_cast< SQInteger >(itr->offset), static_cast< SQInteger >(itr->length));
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// (null || true) == continue & false == break
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if (!ret.IsNull() || !ret.template Cast< bool >())
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{
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break;
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}
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}
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}
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};
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/* ------------------------------------------------------------------------------------------------
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* A class for working with regular expressions.
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* Implemented using PCRE, the Perl Compatible Regular Expressions library. (see http://www.pcre.org)
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*/
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struct PcRegEx
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{
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/* --------------------------------------------------------------------------------------------
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* Internal RegularExpression instance.
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*/
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Poco::RegularExpression m_Rx;
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/* --------------------------------------------------------------------------------------------
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* Base constructor.
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*/
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explicit PcRegEx(StackStrF & str)
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: m_Rx(str.ToStr())
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Explicit constructor.
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*/
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PcRegEx(int options, StackStrF & str)
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: m_Rx(str.ToStr(), options)
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Explicit constructor.
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*/
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PcRegEx(int options, bool study, StackStrF & str)
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: m_Rx(str.ToStr(), options, study)
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{
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}
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/* --------------------------------------------------------------------------------------------
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* Copy constructor. (disabled)
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*/
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PcRegEx(const PcRegEx & o) = delete;
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/* --------------------------------------------------------------------------------------------
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* Move constructor. (disabled)
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*/
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PcRegEx(PcRegEx && o) = delete;
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/* --------------------------------------------------------------------------------------------
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* Copy assignment operator. (disabled)
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*/
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PcRegEx & operator = (const PcRegEx & o) = delete;
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/* --------------------------------------------------------------------------------------------
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* Move assignment operator. (disabled)
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*/
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PcRegEx & operator = (PcRegEx && o) = delete;
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/* --------------------------------------------------------------------------------------------
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* Matches the given subject string against the pattern.
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* Returns the position of the first captured sub-string in m.
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* If no part of the subject matches the pattern, m.offset is std::string::npos and m.length is 0.
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* Returns the number of matches. Throws a exception in case of an error.
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*/
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SQMOD_NODISCARD int MatchFirst(PcRegExMatch & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), m);
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}
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SQMOD_NODISCARD int MatchFirst_(int f, PcRegExMatch & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), m, f);
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}
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/* --------------------------------------------------------------------------------------------
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* Matches the given subject string against the pattern.
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* Returns the position of the first captured sub-string in m.
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* If no part of the subject matches the pattern, m.offset is std::string::npos and m.length is 0.
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* Returns the number of matches. Throws a exception in case of an error.
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*/
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SQMOD_NODISCARD int MatchFirstFrom(SQInteger o, PcRegExMatch & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m);
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}
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SQMOD_NODISCARD int MatchFirstFrom_(int f, SQInteger o, PcRegExMatch & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m, f);
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}
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/* --------------------------------------------------------------------------------------------
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* Matches the given subject string against the pattern.
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* The first entry in m contains the position of the captured sub-string.
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* The following entries identify matching subpatterns. See the PCRE documentation for a more detailed explanation.
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* If no part of the subject matches the pattern, m is empty.
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* Returns the number of matches. Throws a exception in case of an error.
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*/
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SQMOD_NODISCARD int Match(PcRegExMatches & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), 0, m.m_List);
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}
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SQMOD_NODISCARD int Match_(int f, PcRegExMatches & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), 0, m.m_List, f);
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}
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/* --------------------------------------------------------------------------------------------
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* Matches the given subject string against the pattern.
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* The first entry in m contains the position of the captured sub-string.
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* The following entries identify matching subpatterns. See the PCRE documentation for a more detailed explanation.
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* If no part of the subject matches the pattern, m is empty.
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* Returns the number of matches. Throws a exception in case of an error.
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*/
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SQMOD_NODISCARD int MatchFrom(SQInteger o, PcRegExMatches & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m.m_List);
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}
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SQMOD_NODISCARD int MatchFrom_(int f, SQInteger o, PcRegExMatches & m, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m.m_List, f);
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}
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/* --------------------------------------------------------------------------------------------
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* Returns true if and only if the subject matches the regular expression.
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* Internally, this method sets the RE_ANCHORED and RE_NOTEMPTY options for matching,
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* which means that the empty string will never match and the pattern is treated as if it starts with a ^.
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*/
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SQMOD_NODISCARD bool Matches(StackStrF & s) const
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{
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return m_Rx.match(s.ToStr());
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}
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SQMOD_NODISCARD bool Matches_(SQInteger o, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o));
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}
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SQMOD_NODISCARD bool MatchesEx(int f, SQInteger o, StackStrF & s) const
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{
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return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), f);
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}
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};
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} // Namespace:: SqMod
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