Added comments - certain members of State depend on the current match, should be reset
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5
nfa.go
5
nfa.go
@@ -28,7 +28,6 @@ type State struct {
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transitions map[int][]*State // Transitions to different states (maps a character (int representation) to a _list of states. This is useful if one character can lead multiple states eg. ab|aa)
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isKleene bool // Identifies whether current node is a 0-state representing Kleene star
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assert assertType // Type of assertion of current node - NONE means that the node doesn't assert anything
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zeroMatchFound bool // Whether or not the state has been used for a zero-length match - only relevant for zero states
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allChars bool // Whether or not the state represents all characters (eg. a 'dot' metacharacter). A 'dot' node doesn't store any contents directly, as it would take up too much space
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except []rune // Only valid if allChars is true - match all characters _except_ the ones in this block. Useful for inverting character classes.
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lookaroundRegex string // Only for lookaround states - Contents of the regex that the lookaround state holds
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@@ -37,7 +36,9 @@ type State struct {
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groupBegin bool // Whether or not the node starts a capturing group
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groupEnd bool // Whether or not the node ends a capturing group
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groupNum int // Which capturing group the node starts / ends
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threadGroups []Group // Assuming that a state is part of a 'thread' in the matching process, this array stores the indices of capturing groups in the current thread. As matches are found for this state, its groups will be copied over.
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// The following properties depend on the current match - I should think about resetting them for every match.
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zeroMatchFound bool // Whether or not the state has been used for a zero-length match - only relevant for zero states
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threadGroups []Group // Assuming that a state is part of a 'thread' in the matching process, this array stores the indices of capturing groups in the current thread. As matches are found for this state, its groups will be copied over.
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}
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// Clones the NFA starting from the given state.
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