51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
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// Scintilla source code edit control
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/** @file CharacterCategory.h
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** Returns the Unicode general category of a character.
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**/
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// Copyright 2013 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#ifndef CHARACTERCATEGORY_H
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#define CHARACTERCATEGORY_H
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namespace Lexilla {
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enum CharacterCategory {
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ccLu, ccLl, ccLt, ccLm, ccLo,
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ccMn, ccMc, ccMe,
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ccNd, ccNl, ccNo,
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ccPc, ccPd, ccPs, ccPe, ccPi, ccPf, ccPo,
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ccSm, ccSc, ccSk, ccSo,
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ccZs, ccZl, ccZp,
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ccCc, ccCf, ccCs, ccCo, ccCn
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};
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CharacterCategory CategoriseCharacter(int character) noexcept;
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// Common definitions of allowable characters in identifiers from UAX #31.
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bool IsIdStart(int character) noexcept;
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bool IsIdContinue(int character) noexcept;
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bool IsXidStart(int character) noexcept;
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bool IsXidContinue(int character) noexcept;
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class CharacterCategoryMap {
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private:
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std::vector<unsigned char> dense;
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public:
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CharacterCategoryMap();
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CharacterCategory CategoryFor(int character) const noexcept {
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if (static_cast<size_t>(character) < dense.size()) {
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return static_cast<CharacterCategory>(dense[character]);
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} else {
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// binary search through ranges
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return CategoriseCharacter(character);
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}
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}
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int Size() const noexcept;
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void Optimize(int countCharacters);
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};
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}
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#endif
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