Changed behavior of SOS and EOS assertions depending on whether multiline mode is enabled or not
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8
nfa.go
8
nfa.go
@@ -108,11 +108,15 @@ func (s State) checkAssertion(str []rune, idx int) bool {
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return true
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}
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if s.assert == SOS {
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return idx == 0
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// Single-line mode: Beginning of string
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// Multi-line mode: Previous character was newline
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return idx == 0 || (multilineMode && (idx > 0 && str[idx-1] == '\n'))
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}
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if s.assert == EOS {
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// Single-line mode: End of string
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// Multi-line mode: current character is newline
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// Index is at the end of the string, or it points to the last character which is a newline
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return idx == len(str) || (idx == len(str)-1 && str[len(str)-1] == '\n')
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return idx == len(str) || (multilineMode && str[idx] == '\n')
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}
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if s.assert == WBOUND {
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return isWordBoundary(str, idx)
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