REGEX AST /^token/ {
    Concat()
    {
        BOL()
        MatchLiteral("token")
    }
}
REGEX ANNOTATED AST /^token/ {
    Concat()
    <
        features: {BOL,MatchLiteral,Concat}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [5]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: true
    >
    {
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [t]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [5]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
        MatchLiteral("token")
        <
            features: {MatchLiteral}
            firstSet: [t] (exact)
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [5]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: true
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
    }
}
REGEX PROGRAM /^token/ 
Program {
    source:       ^token
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
               BOITest(hardFail: true)
        L0000: MatchLiteral(literal: "token")
        L0001: Succ()
    }
}
REGEX AST /(\w)?^token/ {
    Concat()
    {
        Loop([0-1], greedy)
        {
            DefineGroup(1)
            {
                MatchSet(positive, [0-9A-Z_a-z])
            }
        }
        BOL()
        MatchLiteral("token")
    }
}
REGEX ANNOTATED AST /(\w)?^token/ {
    Concat()
    <
        features: {BOL,MatchLiteral,Concat,DefineGroup,Loop,MatchSet}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [5-6]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: false
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: false
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        Loop([0-1], greedy)
        <
            features: {DefineGroup,Loop,MatchSet}
            firstSet: [0-9A-Z_a-z]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [0-1]
            followConsumes: [5]
            isThisIrrefutable: true
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: false
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: false
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        {
            DefineGroup(1)
            <
                features: {DefineGroup,MatchSet}
                firstSet: [0-9A-Z_a-z] (exact)
                followSet: [\x00-\uffff]
                prevConsumes: [0]
                thisConsumes: [1]
                followConsumes: [5]
                isThisIrrefutable: false
                isFollowIrrefutable: false
                isWord: true
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: false
                isDeterministic: true
                isNotInLoop: false
                isNotNegated: true
                isAtLeastOnce: false
                hasInitialHardFailBOI: false
            >
            {
                MatchSet(positive, [0-9A-Z_a-z])
                <
                    features: {MatchSet}
                    firstSet: [0-9A-Z_a-z] (exact)
                    followSet: [\x00-\uffff]
                    prevConsumes: [0]
                    thisConsumes: [1]
                    followConsumes: [5]
                    isThisIrrefutable: false
                    isFollowIrrefutable: false
                    isWord: true
                    isThisWillNotProgress: true
                    isThisWillNotRegress: true
                    isPrevWillNotProgress: false
                    isPrevWillNotRegress: false
                    isDeterministic: true
                    isNotInLoop: false
                    isNotNegated: true
                    isAtLeastOnce: false
                    hasInitialHardFailBOI: false
                >
            }
        }
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [t]
            prevConsumes: [0-1]
            thisConsumes: [0]
            followConsumes: [5]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: false
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        MatchLiteral("token")
        <
            features: {MatchLiteral}
            firstSet: [t] (exact)
            followSet: [\x00-\uffff]
            prevConsumes: [0-1]
            thisConsumes: [5]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: true
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: false
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
    }
}
REGEX PROGRAM /(\w)?^token/ 
Program {
    source:       (\w)?^token
    flags:        
    numGroups:    2
    numLoops:     0
    instructions: {
        L0000: SyncToLiteralAndBackup(literal: "token" (with full map Boyer-Moore scanner), backup: [0-1])
        L0001: TryMatchSet(set: [0-9A-Z_a-z], failLabel: Lffff)
        L0002: DefineGroupFixed(groupId: 1, length: 1, noNeedToSave: false)
        L0003: BOITest(hardFail: false)
        L0004: MatchLiteral(literal: "token")
        L0005: Succ()
    }
}
REGEX AST /token/ {
    MatchLiteral("token")
}
REGEX ANNOTATED AST /token/ {
    MatchLiteral("token")
    <
        features: {MatchLiteral}
        firstSet: [t] (exact)
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [5]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: true
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
}
REGEX PROGRAM /token/ 
Program {
    source:       token
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: SyncToLiteralAndConsume(literal: "token" (with full map Boyer-Moore scanner))
        L0001: Succ()
    }
}
REGEX AST /^^token/ {
    Concat()
    {
        BOL()
        BOL()
        MatchLiteral("token")
    }
}
REGEX ANNOTATED AST /^^token/ {
    Concat()
    <
        features: {BOL,MatchLiteral,Concat}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [5]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: true
    >
    {
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [5]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [t]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [5]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
        MatchLiteral("token")
        <
            features: {MatchLiteral}
            firstSet: [t] (exact)
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [5]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: true
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
    }
}
REGEX PROGRAM /^^token/ 
Program {
    source:       ^^token
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
               BOITest(hardFail: true)
        L0000: MatchLiteral(literal: "token")
        L0001: Succ()
    }
}
REGEX AST /token^/ {
    Concat()
    {
        MatchLiteral("token")
        BOL()
    }
}
REGEX ANNOTATED AST /token^/ {
    Concat()
    <
        features: {BOL,MatchLiteral,Concat}
        firstSet: [t] (exact)
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [5]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        MatchLiteral("token")
        <
            features: {MatchLiteral}
            firstSet: [t] (exact)
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [5]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: true
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [5]
            thisConsumes: [0]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
    }
}
REGEX PROGRAM /token^/ 
Program {
    source:       token^
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: SyncToLiteralAndConsume(literal: "token" (with full map Boyer-Moore scanner))
        L0001: BOITest(hardFail: true)
        L0002: Succ()
    }
}
REGEX AST /token^token/ {
    Concat()
    {
        MatchLiteral("token")
        BOL()
        MatchLiteral("token")
    }
}
REGEX ANNOTATED AST /token^token/ {
    Concat()
    <
        features: {BOL,MatchLiteral,Concat}
        firstSet: [t] (exact)
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [10]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        MatchLiteral("token")
        <
            features: {MatchLiteral}
            firstSet: [t] (exact)
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [5]
            followConsumes: [5]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: true
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [t]
            prevConsumes: [5]
            thisConsumes: [0]
            followConsumes: [5]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        MatchLiteral("token")
        <
            features: {MatchLiteral}
            firstSet: [t] (exact)
            followSet: [\x00-\uffff]
            prevConsumes: [5]
            thisConsumes: [5]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: true
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
    }
}
REGEX PROGRAM /token^token/ 
Program {
    source:       token^token
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: SyncToLiteralAndConsume(literal: "token" (with full map Boyer-Moore scanner))
        L0001: BOITest(hardFail: true)
        L0002: MatchLiteral(literal: "token")
        L0003: Succ()
    }
}
REGEX AST /^token|^abc/ {
    Alt()
    {
        Concat()
        {
            BOL()
            MatchLiteral("token")
        }
        Concat()
        {
            BOL()
            MatchLiteral("abc")
        }
    }
}
REGEX ANNOTATED AST /^token|^abc/ {
    Alt()
    <
        features: {BOL,MatchLiteral,Concat,Alt}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [3-5]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: false
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: false
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        Concat()
        <
            features: {BOL,MatchLiteral,Concat}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [5]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: false
            hasInitialHardFailBOI: false
        >
        {
            BOL()
            <
                features: {BOL}
                firstSet: [\x00-\uffff]
                followSet: [t]
                prevConsumes: [0]
                thisConsumes: [0]
                followConsumes: [5]
                isThisIrrefutable: false
                isFollowIrrefutable: false
                isWord: false
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: false
                hasInitialHardFailBOI: false
            >
            MatchLiteral("token")
            <
                features: {MatchLiteral}
                firstSet: [t] (exact)
                followSet: [\x00-\uffff]
                prevConsumes: [0]
                thisConsumes: [5]
                followConsumes: [0]
                isThisIrrefutable: false
                isFollowIrrefutable: true
                isWord: true
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: false
                hasInitialHardFailBOI: false
            >
        }
        Concat()
        <
            features: {BOL,MatchLiteral,Concat}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [3]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: false
            hasInitialHardFailBOI: false
        >
        {
            BOL()
            <
                features: {BOL}
                firstSet: [\x00-\uffff]
                followSet: [a]
                prevConsumes: [0]
                thisConsumes: [0]
                followConsumes: [3]
                isThisIrrefutable: false
                isFollowIrrefutable: false
                isWord: false
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: false
                hasInitialHardFailBOI: false
            >
            MatchLiteral("abc")
            <
                features: {MatchLiteral}
                firstSet: [a] (exact)
                followSet: [\x00-\uffff]
                prevConsumes: [0]
                thisConsumes: [3]
                followConsumes: [0]
                isThisIrrefutable: false
                isFollowIrrefutable: true
                isWord: true
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: false
                hasInitialHardFailBOI: false
            >
        }
    }
}
REGEX PROGRAM /^token|^abc/ 
Program {
    source:       ^token|^abc
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: Try(failLabel: Lffff)
        L0001: BOITest(hardFail: false)
        L0002: MatchLiteral(literal: "token")
        L0003: Jump(targetLabel: Lffff)
        L0004: BOITest(hardFail: false)
        L0005: MatchLiteral(literal: "abc")
        L0006: Succ()
    }
}
REGEX AST /(?!token)^abc/ {
    Concat()
    {
        Assertion(negative)
        {
            MatchLiteral("token")
        }
        BOL()
        MatchLiteral("abc")
    }
}
REGEX ANNOTATED AST /(?!token)^abc/ {
    Concat()
    <
        features: {BOL,MatchLiteral,Concat,Assertion}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [3]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: true
    >
    {
        Assertion(negative)
        <
            features: {MatchLiteral,Assertion}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [3]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        {
            MatchLiteral("token")
            <
                features: {MatchLiteral}
                firstSet: [t] (exact)
                followSet: [\x00-\uffff]
                prevConsumes: [0]
                thisConsumes: [5]
                followConsumes: [0-inf]
                isThisIrrefutable: false
                isFollowIrrefutable: true
                isWord: true
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: false
                isAtLeastOnce: true
                hasInitialHardFailBOI: false
            >
        }
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [a]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [3]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
        MatchLiteral("abc")
        <
            features: {MatchLiteral}
            firstSet: [a] (exact)
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [3]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: true
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
    }
}
REGEX PROGRAM /(?!token)^abc/ 
Program {
    source:       (?!token)^abc
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: BeginAssertion(isNegation: true, nextLabel: Lffff, minBodyGroupId: 1, maxBodyGroupId: -1)
        L0001: MatchLiteral(literal: "token")
        L0002: EndAssertion()
        L0003: BOITest(hardFail: true)
        L0004: MatchLiteral(literal: "abc")
        L0005: Succ()
    }
}
REGEX AST /(?=^abc)/ {
    Assertion(positive)
    {
        Concat()
        {
            BOL()
            MatchLiteral("abc")
        }
    }
}
REGEX ANNOTATED AST /(?=^abc)/ {
    Assertion(positive)
    <
        features: {BOL,MatchLiteral,Concat,Assertion}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [0]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: true
    >
    {
        Concat()
        <
            features: {BOL,MatchLiteral,Concat}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [3]
            followConsumes: [0-inf]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
        {
            BOL()
            <
                features: {BOL}
                firstSet: [\x00-\uffff]
                followSet: [a]
                prevConsumes: [0]
                thisConsumes: [0]
                followConsumes: [3-inf]
                isThisIrrefutable: false
                isFollowIrrefutable: false
                isWord: false
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: true
            >
            MatchLiteral("abc")
            <
                features: {MatchLiteral}
                firstSet: [a] (exact)
                followSet: [\x00-\uffff]
                prevConsumes: [0]
                thisConsumes: [3]
                followConsumes: [0-inf]
                isThisIrrefutable: false
                isFollowIrrefutable: true
                isWord: true
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: false
            >
        }
    }
}
REGEX PROGRAM /(?=^abc)/ 
Program {
    source:       (?=^abc)
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: BeginAssertion(isNegation: false, nextLabel: Lffff, minBodyGroupId: 1, maxBodyGroupId: -1)
        L0001: BOITest(hardFail: true)
        L0002: MatchLiteral(literal: "abc")
        L0003: EndAssertion()
        L0004: Succ()
    }
}
REGEX AST /(^token)/ {
    DefineGroup(1)
    {
        Concat()
        {
            BOL()
            MatchLiteral("token")
        }
    }
}
REGEX ANNOTATED AST /(^token)/ {
    DefineGroup(1)
    <
        features: {BOL,MatchLiteral,Concat,DefineGroup}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [5]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: true
    >
    {
        Concat()
        <
            features: {BOL,MatchLiteral,Concat}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [5]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
        {
            BOL()
            <
                features: {BOL}
                firstSet: [\x00-\uffff]
                followSet: [t]
                prevConsumes: [0]
                thisConsumes: [0]
                followConsumes: [5]
                isThisIrrefutable: false
                isFollowIrrefutable: false
                isWord: false
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: true
            >
            MatchLiteral("token")
            <
                features: {MatchLiteral}
                firstSet: [t] (exact)
                followSet: [\x00-\uffff]
                prevConsumes: [0]
                thisConsumes: [5]
                followConsumes: [0]
                isThisIrrefutable: false
                isFollowIrrefutable: true
                isWord: true
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: true
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: false
            >
        }
    }
}
REGEX PROGRAM /(^token)/ 
Program {
    source:       (^token)
    flags:        
    numGroups:    2
    numLoops:     0
    instructions: {
               BOITest(hardFail: true)
        L0000: MatchLiteral(literal: "token")
        L0001: DefineGroupFixed(groupId: 1, length: 5, noNeedToSave: true)
        L0002: Succ()
    }
}
REGEX AST /(^a)+/ {
    Loop([1-inf], greedy)
    {
        DefineGroup(1)
        {
            Concat()
            {
                BOL()
                MatchChar('a')
            }
        }
    }
}
REGEX ANNOTATED AST /(^a)+/ {
    Loop([1-inf], greedy)
    <
        features: {BOL,MatchChar,Concat,DefineGroup,Loop}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [1-inf]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: false
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: false
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        DefineGroup(1)
        <
            features: {BOL,MatchChar,Concat,DefineGroup}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0-inf]
            thisConsumes: [1]
            followConsumes: [0-inf]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: false
            isDeterministic: true
            isNotInLoop: false
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        {
            Concat()
            <
                features: {BOL,MatchChar,Concat}
                firstSet: [\x00-\uffff]
                followSet: [\x00-\uffff]
                prevConsumes: [0-inf]
                thisConsumes: [1]
                followConsumes: [0-inf]
                isThisIrrefutable: false
                isFollowIrrefutable: true
                isWord: false
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: false
                isDeterministic: true
                isNotInLoop: false
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: false
            >
            {
                BOL()
                <
                    features: {BOL}
                    firstSet: [\x00-\uffff]
                    followSet: [a]
                    prevConsumes: [0-inf]
                    thisConsumes: [0]
                    followConsumes: [1-inf]
                    isThisIrrefutable: false
                    isFollowIrrefutable: false
                    isWord: false
                    isThisWillNotProgress: true
                    isThisWillNotRegress: true
                    isPrevWillNotProgress: false
                    isPrevWillNotRegress: false
                    isDeterministic: true
                    isNotInLoop: false
                    isNotNegated: true
                    isAtLeastOnce: true
                    hasInitialHardFailBOI: false
                >
                MatchChar('a')
                <
                    features: {MatchChar}
                    firstSet: [a] (exact)
                    followSet: [\x00-\uffff]
                    prevConsumes: [0-inf]
                    thisConsumes: [1]
                    followConsumes: [0-inf]
                    isThisIrrefutable: false
                    isFollowIrrefutable: true
                    isWord: true
                    isThisWillNotProgress: true
                    isThisWillNotRegress: true
                    isPrevWillNotProgress: false
                    isPrevWillNotRegress: false
                    isDeterministic: true
                    isNotInLoop: false
                    isNotNegated: true
                    isAtLeastOnce: true
                    hasInitialHardFailBOI: false
                >
            }
        }
    }
}
REGEX PROGRAM /(^a)+/ 
Program {
    source:       (^a)+
    flags:        
    numGroups:    2
    numLoops:     1
    instructions: {
        L0000: SyncToCharAndBackup(c: 'a', backup: [0-inf])
        L0001: BeginLoopFixedGroupLastIteration(loopId: 0, repeats: [1-inf], exitLabel: Lffff, hasOuterLoops: false, hasInnerNondet: false, length: 1, groupId: 1, noNeedToSave: true)
        L0002: BOITest(hardFail: false)
        L0003: MatchChar(c: 'a')
        L0004: RepeatLoopFixedGroupLastIteration(beginLabel: Lffff)
        L0005: Succ()
    }
}
REGEX AST /(?=^)/ {
    Assertion(positive)
    {
        BOL()
    }
}
REGEX ANNOTATED AST /(?=^)/ {
    Assertion(positive)
    <
        features: {BOL,Assertion}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [0]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: true
    >
    {
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [0-inf]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
    }
}
REGEX PROGRAM /(?=^)/ 
Program {
    source:       (?=^)
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: BeginAssertion(isNegation: false, nextLabel: Lffff, minBodyGroupId: 1, maxBodyGroupId: -1)
        L0001: BOITest(hardFail: true)
        L0002: EndAssertion()
        L0003: Succ()
    }
}
REGEX AST /(^)/ {
    DefineGroup(1)
    {
        BOL()
    }
}
REGEX ANNOTATED AST /(^)/ {
    DefineGroup(1)
    <
        features: {BOL,DefineGroup}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [0]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: true
    >
    {
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: true
        >
    }
}
REGEX PROGRAM /(^)/ 
Program {
    source:       (^)
    flags:        
    numGroups:    2
    numLoops:     0
    instructions: {
               BOITest(hardFail: true)
        L0000: DefineGroupFixed(groupId: 1, length: 0, noNeedToSave: true)
        L0001: Succ()
    }
}
REGEX AST /(^)+/ {
    Loop([1-inf], greedy)
    {
        DefineGroup(1)
        {
            BOL()
        }
    }
}
REGEX ANNOTATED AST /(^)+/ {
    Loop([1-inf], greedy)
    <
        features: {BOL,DefineGroup,Loop}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [0]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: false
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: false
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        DefineGroup(1)
        <
            features: {BOL,DefineGroup}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [0]
            isThisIrrefutable: false
            isFollowIrrefutable: false
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: false
            isDeterministic: true
            isNotInLoop: false
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        {
            BOL()
            <
                features: {BOL}
                firstSet: [\x00-\uffff]
                followSet: [\x00-\uffff]
                prevConsumes: [0]
                thisConsumes: [0]
                followConsumes: [0]
                isThisIrrefutable: false
                isFollowIrrefutable: false
                isWord: false
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: false
                isDeterministic: true
                isNotInLoop: false
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: false
            >
        }
    }
}
REGEX PROGRAM /(^)+/ 
Program {
    source:       (^)+
    flags:        
    numGroups:    2
    numLoops:     1
    instructions: {
        L0000: BeginLoop(loopId: 0, repeats: [1-inf], exitLabel: Lffff, hasOuterLoops: false, hasInnerNondet: false, minBodyGroupId: 1, maxBodyGroupId: 1, greedy: true)
        L0001: BOITest(hardFail: false)
        L0002: DefineGroupFixed(groupId: 1, length: 0, noNeedToSave: false)
        L0003: RepeatLoop(beginLabel: Lffff)
        L0004: Succ()
    }
}
REGEX AST /(?!^)/ {
    Assertion(negative)
    {
        BOL()
    }
}
REGEX ANNOTATED AST /(?!^)/ {
    Assertion(negative)
    <
        features: {BOL,Assertion}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [0]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: true
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: true
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        BOL()
        <
            features: {BOL}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0]
            thisConsumes: [0]
            followConsumes: [0-inf]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: true
            isNotNegated: false
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
    }
}
REGEX PROGRAM /(?!^)/ 
Program {
    source:       (?!^)
    flags:        
    numGroups:    1
    numLoops:     0
    instructions: {
        L0000: BeginAssertion(isNegation: true, nextLabel: Lffff, minBodyGroupId: 1, maxBodyGroupId: -1)
        L0001: BOITest(hardFail: false)
        L0002: EndAssertion()
        L0003: Succ()
    }
}
REGEX AST /(?:^abc)+?/ {
    Loop([1-inf], non-greedy)
    {
        Concat()
        {
            BOL()
            MatchLiteral("abc")
        }
    }
}
REGEX ANNOTATED AST /(?:^abc)+?/ {
    Loop([1-inf], non-greedy)
    <
        features: {BOL,MatchLiteral,Concat,Loop}
        firstSet: [\x00-\uffff]
        followSet: [\x00-\uffff]
        prevConsumes: [0]
        thisConsumes: [3-inf]
        followConsumes: [0]
        isThisIrrefutable: false
        isFollowIrrefutable: true
        isWord: false
        isThisWillNotProgress: false
        isThisWillNotRegress: true
        isPrevWillNotProgress: false
        isPrevWillNotRegress: true
        isDeterministic: false
        isNotInLoop: true
        isNotNegated: true
        isAtLeastOnce: true
        hasInitialHardFailBOI: false
    >
    {
        Concat()
        <
            features: {BOL,MatchLiteral,Concat}
            firstSet: [\x00-\uffff]
            followSet: [\x00-\uffff]
            prevConsumes: [0-inf]
            thisConsumes: [3]
            followConsumes: [0-inf]
            isThisIrrefutable: false
            isFollowIrrefutable: true
            isWord: false
            isThisWillNotProgress: true
            isThisWillNotRegress: true
            isPrevWillNotProgress: false
            isPrevWillNotRegress: true
            isDeterministic: true
            isNotInLoop: false
            isNotNegated: true
            isAtLeastOnce: true
            hasInitialHardFailBOI: false
        >
        {
            BOL()
            <
                features: {BOL}
                firstSet: [\x00-\uffff]
                followSet: [a]
                prevConsumes: [0-inf]
                thisConsumes: [0]
                followConsumes: [3-inf]
                isThisIrrefutable: false
                isFollowIrrefutable: false
                isWord: false
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: false
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: false
            >
            MatchLiteral("abc")
            <
                features: {MatchLiteral}
                firstSet: [a] (exact)
                followSet: [\x00-\uffff]
                prevConsumes: [0-inf]
                thisConsumes: [3]
                followConsumes: [0-inf]
                isThisIrrefutable: false
                isFollowIrrefutable: true
                isWord: true
                isThisWillNotProgress: true
                isThisWillNotRegress: true
                isPrevWillNotProgress: false
                isPrevWillNotRegress: true
                isDeterministic: true
                isNotInLoop: false
                isNotNegated: true
                isAtLeastOnce: true
                hasInitialHardFailBOI: false
            >
        }
    }
}
REGEX PROGRAM /(?:^abc)+?/ 
Program {
    source:       (?:^abc)+?
    flags:        
    numGroups:    1
    numLoops:     1
    instructions: {
        L0000: SyncToLiteralAndBackup(literal: "abc" (with linear map Boyer-Moore scanner), backup: [0-inf])
        L0001: BeginLoop(loopId: 0, repeats: [1-inf], exitLabel: Lffff, hasOuterLoops: false, hasInnerNondet: false, minBodyGroupId: 1, maxBodyGroupId: -1, greedy: false)
        L0002: BOITest(hardFail: true)
        L0003: MatchLiteral(literal: "abc")
        L0004: RepeatLoop(beginLabel: Lffff)
        L0005: Succ()
    }
}