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@nitely
nitely committed Dec 8, 2024
1 parent a38a29b commit 8baa415
Showing 1 changed file with 48 additions and 74 deletions.
122 changes: 48 additions & 74 deletions src/regex/nodematch.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -108,38 +108,39 @@ func swapCase*(r: Rune): Rune =

func matchShorthand(n: Node, r: Rune): bool =
case n.kind
of reWord:
r.isWord()
of reNotAlphaNum:
not r.isWord()
of reDigit:
r.isDecimal()
of reNotDigit:
not r.isDecimal()
of reWhiteSpace:
r.isWhiteSpace()
of reNotWhiteSpace:
not r.isWhiteSpace()
of reWordAscii:
r.isWordAscii()
of reDigitAscii:
r.isDigitAscii()
of reWhiteSpaceAscii:
r.isWhiteSpaceAscii()
of reUCC:
r.unicodeCategory() in n.cc
of reNotAlphaNumAscii:
not r.isWordAscii()
of reNotDigitAscii:
not r.isDigitAscii()
of reNotWhiteSpaceAscii:
not r.isWhiteSpaceAscii()
of reNotUCC:
r.unicodeCategory() notin n.cc
of reWord: r.isWord()
of reNotAlphaNum: not r.isWord()
of reDigit: r.isDecimal()
of reNotDigit: not r.isDecimal()
of reWhiteSpace: r.isWhiteSpace()
of reNotWhiteSpace: not r.isWhiteSpace()
of reWordAscii: r.isWordAscii()
of reDigitAscii: r.isDigitAscii()
of reWhiteSpaceAscii: r.isWhiteSpaceAscii()
of reUCC: r.unicodeCategory() in n.cc
of reNotAlphaNumAscii: not r.isWordAscii()
of reNotDigitAscii: not r.isDigitAscii()
of reNotWhiteSpaceAscii: not r.isWhiteSpaceAscii()
of reNotUCC: r.unicodeCategory() notin n.cc
else:
doAssert false
false

func matchSet(n: Node, r: Rune): bool =
result = (
r in n.cps or
r in n.ranges
)
if not result:
for nn in n.shorthands:
result = matchShorthand(nn, r)
if result:
break
result = (
(result and n.kind == reInSet) or
(not result and n.kind == reNotSet)
)

func match*(n: Node, r: Rune): bool {.inline.} =
## match for ``Node`` of matchable kind.
## Return whether the node matches
Expand All @@ -149,52 +150,25 @@ func match*(n: Node, r: Rune): bool {.inline.} =
if n.kind == reChar:
return n.cp == r
case n.kind
of reEOE:
r == invalidRune
of reWord:
r.isWord()
of reNotAlphaNum:
not r.isWord()
of reDigit:
r.isDecimal()
of reNotDigit:
not r.isDecimal()
of reWhiteSpace:
r.isWhiteSpace()
of reNotWhiteSpace:
not r.isWhiteSpace()
of reInSet, reNotSet:
var matched = (
r in n.cps or
r in n.ranges)
if not matched:
for nn in n.shorthands:
matched = matchShorthand(nn, r)
if matched: break
((matched and n.kind == reInSet) or
(not matched and n.kind == reNotSet))
of reAny:
r != lineBreakRune
of reAnyNL:
true
of reCharCI:
r == n.cp or r == n.cp.swapCase()
of reWordAscii:
r.isWordAscii()
of reDigitAscii:
r.isDigitAscii()
of reWhiteSpaceAscii:
r.isWhiteSpaceAscii()
of reUCC:
r.unicodeCategory() in n.cc
of reNotAlphaNumAscii:
not r.isWordAscii()
of reNotDigitAscii:
not r.isDigitAscii()
of reNotWhiteSpaceAscii:
not r.isWhiteSpaceAscii()
of reNotUCC:
r.unicodeCategory() notin n.cc
of reEOE: r == invalidRune
of reWord: r.isWord()
of reNotAlphaNum: not r.isWord()
of reDigit: r.isDecimal()
of reNotDigit: not r.isDecimal()
of reWhiteSpace: r.isWhiteSpace()
of reNotWhiteSpace: not r.isWhiteSpace()
of reAny: r != lineBreakRune
of reAnyNL: true
of reCharCI: r == n.cp or r == n.cp.swapCase()
of reWordAscii: r.isWordAscii()
of reDigitAscii: r.isDigitAscii()
of reWhiteSpaceAscii: r.isWhiteSpaceAscii()
of reUCC: r.unicodeCategory() in n.cc
of reNotAlphaNumAscii: not r.isWordAscii()
of reNotDigitAscii: not r.isDigitAscii()
of reNotWhiteSpaceAscii: not r.isWhiteSpaceAscii()
of reNotUCC: r.unicodeCategory() notin n.cc
of reInSet, reNotSet: matchSet(n, r)
else:
assert n.kind == reChar
n.cp == r

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