RegexPure.h

/*********************************************************************** Author: Zihan Chen (vczh) Licensed under https://github.com/vczh-libraries/License ***********************************************************************/

#ifndef VCZH_REGEX_REGEXPURE

#define VCZH_REGEX_REGEXPURE

#include "RegexAutomaton.h"

namespace

{

namespace

regex_internal

{

class

PureResult

{

public

vint

start

;

vint

length

;

vint

finalState

;

vint

terminateState

; };

class

PureInterpretor

public

Object

{

protected

#if defined VCZH_MSVC

static

const

vint

SupportedCharCount

0x10000

;

// UTF-16

#elif defined VCZH_GCC

static const vint SupportedCharCount = 0x110000; // UTF-32 #endif

vint

charMap

[

SupportedCharCount

];

// char -> char set index

vint

transition

;

// (state * char set index) -> state*

bool

finalState

;

// state -> bool

vint

relatedFinalState

;

// sate -> (finalState or -1)

vint

stateCount

;

vint

charSetCount

;

vint

startState

;

public

PureInterpretor

(

Automaton

Ref

dfa

CharRange

List

subsets

);

PureInterpretor

();

bool

MatchHead

(

const

wchar_t

input

const

wchar_t

start

PureResult

result

);

bool

Match

(

const

wchar_t

input

const

wchar_t

start

PureResult

result

);

vint

GetStartState

();

vint

Transit

(

wchar_t

input

vint

state

);

bool

IsFinalState

(

vint

state

);

bool

IsDeadState

(

vint

state

);

void

PrepareForRelatedFinalStateTable

();

vint

GetRelatedFinalState

(

vint

state

); }; } }

#endif