From 6d1bf18357b56cbec7d289c9c9434a7a8888b386 Mon Sep 17 00:00:00 2001
From: Neil <nyamatongwe@gmail.com>
Date: Fri, 29 Mar 2019 09:05:14 +1100
Subject: Feature [feature-requests:#1259]. Add
 SCI_SETCHARACTERCATEGORYOPTIMIZATION API to optimize speed of character
 category features.

---
 lexlib/CharacterCategory.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'lexlib/CharacterCategory.h')

diff --git a/lexlib/CharacterCategory.h b/lexlib/CharacterCategory.h
index 767d79670..d1ac39152 100644
--- a/lexlib/CharacterCategory.h
+++ b/lexlib/CharacterCategory.h
@@ -28,6 +28,23 @@ bool IsIdContinue(int character);
 bool IsXidStart(int character);
 bool IsXidContinue(int character);
 
+class CharacterCategoryMap {
+private:
+	std::vector<unsigned char> dense;
+public:
+	CharacterCategoryMap() noexcept;
+	CharacterCategory CategoryFor(int character) const {
+		if (static_cast<size_t>(character) < dense.size()) {
+			return static_cast<CharacterCategory>(dense[character]);
+		} else {
+			// binary search through ranges
+			return CategoriseCharacter(character);
+		}
+	}
+	int Size() const noexcept;
+	void Optimize(int countCharacters);
+};
+
 }
 
 #endif
-- 
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