mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2024-11-08 08:47:17 +01:00
WIP regular expression.
This commit is contained in:
Sandu Liviu Catalin
parent
41f7c4f75f
commit
1c15090161
@ -1,18 +1,112 @@
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// ------------------------------------------------------------------------------------------------
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#include "PocoLib/RegEx.hpp"
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// ------------------------------------------------------------------------------------------------
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#include <sqratConst.h>
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// ------------------------------------------------------------------------------------------------
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namespace SqMod {
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// ------------------------------------------------------------------------------------------------
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SQMOD_DECL_TYPENAME(SqRegEx, _SC("SqRegEx"))
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SQMOD_DECL_TYPENAME(SqRegExMatch, _SC("SqRegExMatch"))
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SQMOD_DECL_TYPENAME(SqRegExMatches, _SC("SqRegExMatches"))
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// ------------------------------------------------------------------------------------------------
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// ================================================================================================
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void Register_POCO_RegEx(HSQUIRRELVM vm, Table &)
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void Register_POCO_RegEx(HSQUIRRELVM vm, Table & ns)
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{
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Table ns(vm);
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RootTable(vm).Bind(_SC("SqRegEx"), ns);
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// --------------------------------------------------------------------------------------------
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ns.Bind(_SC("RegExMatch"),
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Class< PcRegExMatch >(vm, SqRegExMatch::Str)
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// Constructors
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.Ctor()
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.Ctor< SQInteger >()
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.Ctor< SQInteger, SQInteger >()
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// Meta-methods
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.SquirrelFunc(_SC("_typename"), &SqRegExMatch::Fn)
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// Properties
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.Prop(_SC("Offset"), &PcRegExMatch::GetOffset, &PcRegExMatch::SetOffset)
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.Prop(_SC("Length"), &PcRegExMatch::GetLength, &PcRegExMatch::SetLength)
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);
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// --------------------------------------------------------------------------------------------
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ns.Bind(_SC("RegExMatches"),
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Class< PcRegExMatches >(vm, SqRegExMatches::Str)
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// Constructors
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.Ctor()
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// Meta-methods
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.SquirrelFunc(_SC("_typename"), &SqRegExMatches::Fn)
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// Properties
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.Prop(_SC("Front"), &PcRegExMatches::Front)
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.Prop(_SC("Back"), &PcRegExMatches::Back)
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.Prop(_SC("Empty"), &PcRegExMatches::Empty)
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.Prop(_SC("Size"), &PcRegExMatches::Size)
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.Prop(_SC("Capacity"), &PcRegExMatches::Capacity, &PcRegExMatches::Reserve)
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// Member Methods
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.Func(_SC("Get"), &PcRegExMatches::Get)
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.Func(_SC("Reserve"), &PcRegExMatches::Reserve)
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.Func(_SC("Compact"), &PcRegExMatches::Compact)
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.Func(_SC("Clear"), &PcRegExMatches::Clear)
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.Func(_SC("Pop"), &PcRegExMatches::Pop)
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.Func(_SC("EraseAt"), &PcRegExMatches::EraseAt)
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.Func(_SC("EraseFrom"), &PcRegExMatches::EraseFrom)
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.Func(_SC("Each"), &PcRegExMatches::Each)
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.Func(_SC("EachRange"), &PcRegExMatches::EachRange)
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.Func(_SC("While"), &PcRegExMatches::While)
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.Func(_SC("WhileRange"), &PcRegExMatches::WhileRange)
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);
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// --------------------------------------------------------------------------------------------
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ns.Bind(_SC("RegEx"),
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Class< PcRegEx, NoCopy< PcRegEx > >(vm, SqRegEx::Str)
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// Constructors
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.Ctor< StackStrF & >()
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.Ctor< int, StackStrF & >()
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.Ctor< int, bool, StackStrF & >()
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// Meta-methods
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.SquirrelFunc(_SC("_typename"), &SqRegEx::Fn)
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// Member Methods
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//.Func(_SC("Assign"), &PcRegEx::assign)
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// Overloaded Member Methods
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.Overload(_SC("MatchFirst"), &PcRegEx::MatchFirst)
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.Overload(_SC("MatchFirst"), &PcRegEx::MatchFirst_)
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.Overload(_SC("MatchFirstFrom"), &PcRegEx::MatchFirstFrom)
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.Overload(_SC("MatchFirstFrom"), &PcRegEx::MatchFirstFrom_)
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.Overload(_SC("Match"), &PcRegEx::Match)
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.Overload(_SC("Match"), &PcRegEx::Match_)
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.Overload(_SC("MatchFrom"), &PcRegEx::MatchFrom)
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.Overload(_SC("MatchFrom"), &PcRegEx::MatchFrom_)
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.Overload(_SC("Matches"), &PcRegEx::Matches)
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.Overload(_SC("Matches"), &PcRegEx::Matches_)
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.Overload(_SC("Matches"), &PcRegEx::MatchesEx)
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);
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// --------------------------------------------------------------------------------------------
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ConstTable(vm).Enum(_SC("SqRegExOption"), Enumeration(vm)
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.Const(_SC("Caseless"), static_cast< SQInteger >(Poco::RegularExpression::RE_CASELESS))
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.Const(_SC("MultiLine"), static_cast< SQInteger >(Poco::RegularExpression::RE_MULTILINE))
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.Const(_SC("DotAll"), static_cast< SQInteger >(Poco::RegularExpression::RE_DOTALL))
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.Const(_SC("Extended"), static_cast< SQInteger >(Poco::RegularExpression::RE_EXTENDED))
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.Const(_SC("Anchored"), static_cast< SQInteger >(Poco::RegularExpression::RE_ANCHORED))
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.Const(_SC("DollarEndOnly"), static_cast< SQInteger >(Poco::RegularExpression::RE_DOLLAR_ENDONLY))
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.Const(_SC("Extra"), static_cast< SQInteger >(Poco::RegularExpression::RE_EXTRA))
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.Const(_SC("NotBOL"), static_cast< SQInteger >(Poco::RegularExpression::RE_NOTBOL))
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.Const(_SC("NotEOL"), static_cast< SQInteger >(Poco::RegularExpression::RE_NOTEOL))
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.Const(_SC("Ungreedy"), static_cast< SQInteger >(Poco::RegularExpression::RE_UNGREEDY))
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.Const(_SC("NotEmpty"), static_cast< SQInteger >(Poco::RegularExpression::RE_NOTEMPTY))
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.Const(_SC("UTF8"), static_cast< SQInteger >(Poco::RegularExpression::RE_UTF8))
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.Const(_SC("NoAutoCapture"), static_cast< SQInteger >(Poco::RegularExpression::RE_NO_AUTO_CAPTURE))
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.Const(_SC("NoUTF8Check"), static_cast< SQInteger >(Poco::RegularExpression::RE_NO_UTF8_CHECK))
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.Const(_SC("FirstLine"), static_cast< SQInteger >(Poco::RegularExpression::RE_FIRSTLINE))
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.Const(_SC("DupNames"), static_cast< SQInteger >(Poco::RegularExpression::RE_DUPNAMES))
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.Const(_SC("NewLineCR"), static_cast< SQInteger >(Poco::RegularExpression::RE_NEWLINE_CR))
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.Const(_SC("NewLineLF"), static_cast< SQInteger >(Poco::RegularExpression::RE_NEWLINE_LF))
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.Const(_SC("NewLineCRLF"), static_cast< SQInteger >(Poco::RegularExpression::RE_NEWLINE_CRLF))
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.Const(_SC("NewLineAny"), static_cast< SQInteger >(Poco::RegularExpression::RE_NEWLINE_ANY))
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.Const(_SC("NewLineAnyCRLF"), static_cast< SQInteger >(Poco::RegularExpression::RE_NEWLINE_ANYCRLF))
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.Const(_SC("Global"), static_cast< SQInteger >(Poco::RegularExpression::RE_GLOBAL))
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.Const(_SC("NoVars"), static_cast< SQInteger >(Poco::RegularExpression::RE_NO_VARS))
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);
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}
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} // Namespace:: SqMod
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@ -1,11 +1,481 @@
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#pragma once
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// ------------------------------------------------------------------------------------------------
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#include "Core/Common.hpp"
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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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{
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Explicit constructor.
|
||||
*/
|
||||
PcRegEx(int options, StackStrF & str)
|
||||
: m_Rx(str.ToStr(), options)
|
||||
{
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Explicit constructor.
|
||||
*/
|
||||
PcRegEx(int options, bool study, StackStrF & str)
|
||||
: m_Rx(str.ToStr(), options, study)
|
||||
{
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Copy constructor. (disabled)
|
||||
*/
|
||||
PcRegEx(const PcRegEx & o) = delete;
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Move constructor. (disabled)
|
||||
*/
|
||||
PcRegEx(PcRegEx && o) = delete;
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Copy assignment operator. (disabled)
|
||||
*/
|
||||
PcRegEx & operator = (const PcRegEx & o) = delete;
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Move assignment operator. (disabled)
|
||||
*/
|
||||
PcRegEx & operator = (PcRegEx && o) = delete;
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Matches the given subject string against the pattern.
|
||||
* Returns the position of the first captured sub-string in m.
|
||||
* If no part of the subject matches the pattern, m.offset is std::string::npos and m.length is 0.
|
||||
* Returns the number of matches. Throws a exception in case of an error.
|
||||
*/
|
||||
SQMOD_NODISCARD int MatchFirst(PcRegExMatch & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), m);
|
||||
}
|
||||
SQMOD_NODISCARD int MatchFirst_(int f, PcRegExMatch & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), m, f);
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Matches the given subject string against the pattern.
|
||||
* Returns the position of the first captured sub-string in m.
|
||||
* If no part of the subject matches the pattern, m.offset is std::string::npos and m.length is 0.
|
||||
* Returns the number of matches. Throws a exception in case of an error.
|
||||
*/
|
||||
SQMOD_NODISCARD int MatchFirstFrom(SQInteger o, PcRegExMatch & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m);
|
||||
}
|
||||
SQMOD_NODISCARD int MatchFirstFrom_(int f, SQInteger o, PcRegExMatch & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m, f);
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Matches the given subject string against the pattern.
|
||||
* The first entry in m contains the position of the captured sub-string.
|
||||
* The following entries identify matching subpatterns. See the PCRE documentation for a more detailed explanation.
|
||||
* If no part of the subject matches the pattern, m is empty.
|
||||
* Returns the number of matches. Throws a exception in case of an error.
|
||||
*/
|
||||
SQMOD_NODISCARD int Match(PcRegExMatches & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), 0, m.m_List);
|
||||
}
|
||||
SQMOD_NODISCARD int Match_(int f, PcRegExMatches & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), 0, m.m_List, f);
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Matches the given subject string against the pattern.
|
||||
* The first entry in m contains the position of the captured sub-string.
|
||||
* The following entries identify matching subpatterns. See the PCRE documentation for a more detailed explanation.
|
||||
* If no part of the subject matches the pattern, m is empty.
|
||||
* Returns the number of matches. Throws a exception in case of an error.
|
||||
*/
|
||||
SQMOD_NODISCARD int MatchFrom(SQInteger o, PcRegExMatches & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m.m_List);
|
||||
}
|
||||
SQMOD_NODISCARD int MatchFrom_(int f, SQInteger o, PcRegExMatches & m, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), m.m_List, f);
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------------------------------
|
||||
* Returns true if and only if the subject matches the regular expression.
|
||||
* Internally, this method sets the RE_ANCHORED and RE_NOTEMPTY options for matching,
|
||||
* which means that the empty string will never match and the pattern is treated as if it starts with a ^.
|
||||
*/
|
||||
SQMOD_NODISCARD bool Matches(StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr());
|
||||
}
|
||||
SQMOD_NODISCARD bool Matches_(SQInteger o, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o));
|
||||
}
|
||||
SQMOD_NODISCARD bool MatchesEx(int f, SQInteger o, StackStrF & s) const
|
||||
{
|
||||
return m_Rx.match(s.ToStr(), static_cast< std::string::size_type >(o), f);
|
||||
}
|
||||
};
|
||||
|
||||
} // Namespace:: SqMod
|
||||
|
||||
Loading…
Reference in New Issue
Block a user