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diff: optimize isPunctuation() and isAlpha() checks

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This commit is contained in:
Aleksey Pivovarov
2015-10-05 20:18:04 +03:00
parent fc14d7b04d
commit 84f57248f7
1 changed files with 18 additions and 12 deletions
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platform/diff-impl/src/com/intellij/diff/comparison/TrimUtil.java
+18 -12
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@@ -17,7 +17,6 @@ package com.intellij.diff.comparison;
import com.intellij.diff.util.IntPair;
import com.intellij.diff.util.Range;
import gnu.trove.TIntHashSet;
import org.jetbrains.annotations.NotNull;
import java.util.List;
@@ -26,23 +25,30 @@ import static com.intellij.openapi.util.text.StringUtil.isWhiteSpace;
@SuppressWarnings({"Duplicates", "unused", "TypeParameterExplicitlyExtendsObject"})
public class TrimUtil {
private static final String PUNCTUATION = "(){}[],./?`~!@#$%^&*-=+|\\;:'\"<>";
private static final TIntHashSet PUNCTUATION_SET = new TIntHashSet();
static {
for (char punctuation : PUNCTUATION.toCharArray()) {
PUNCTUATION_SET.add(punctuation);
}
}
public static boolean isPunctuation(char c) {
return PUNCTUATION_SET.contains(c);
if (c == '_') return false;
boolean isPunctuation = false;
isPunctuation |= c >= 33 & c <= 47; // !"#$%&'()*+,-./
isPunctuation |= c >= 58 & c <= 64; // :;<=>?@
isPunctuation |= c >= 91 & c <= 96; // [\]^_`
isPunctuation |= c >= 123 & c <= 126; // {|}~
return isPunctuation;
}
public static boolean isAlpha(char c) {
return !isWhiteSpace(c) && !PUNCTUATION_SET.contains(c);
return !isWhiteSpace(c) && !isPunctuation(c);
}
//public static void main(String[] args) {
// String PUNCTUATION = "(){}[],./?`~!@#$%^&*-=+|\\;:'\"<>";
// for (char c = Character.MIN_VALUE; c < Character.MAX_VALUE; c++) {
// if (StringUtil.containsChar(PUNCTUATION, c) != isPunctuation(c)) System.out.println("'" + c + "' - " + (int)c);
// }
// char c = Character.MAX_VALUE;
// if (StringUtil.containsChar(PUNCTUATION, c) != isPunctuation(c)) System.out.println("'" + c + "' - " + (int)c);
// System.out.println("Finish");
//}
//
// Trim
//