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DataFlowInspection: do not report some common compile-time flag checks

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This commit is contained in:
Tagir Valeev
2017-03-23 11:34:35 +07:00
parent da2d1d3cb6
commit 3d216927b7
3 changed files with 96 additions and 6 deletions
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java/java-tests/testData/inspection/dataFlow/fixture/SuppressStaticFlags.java
+54
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@@ -0,0 +1,54 @@
public class SuppressStaticFlags {
private static final boolean DEBUG = true;
private static final int DEBUG_LEVEL = 2;
private static final int FLAGS = 0x03;
private static final int FLAG1 = 0x01;
private static final int FLAG2 = 0x02;
private static final long LONG_FLAGS = 0x03;
private static final long LONG_FLAG1 = 0x01;
private static final long LONG_FLAG2 = 0x02;
public void testDebug(String s) {
if(DEBUG) {
System.out.println("Debug is on");
}
if(DEBUG && s.length() == 0) {
System.out.println("String is empty");
}
}
public void testDebugLevel(String s) {
if(DEBUG_LEVEL == 3) {
System.out.println("Debug level is high");
}
if(DEBUG_LEVEL > 1 && s.length() == 0) {
System.out.println("String is empty");
}
}
public void testFlags(String s) {
if((FLAGS & 1) == 0) {
System.out.println("No flag");
}
if(((FLAGS) & (FLAG2)) != 0 && s.length() == 0) {
System.out.println("Flag2");
}
if(<warning descr="Condition '(3 & 1) == 2' is always 'false'">(3 & 1) == 2</warning>) {
System.out.println("Literals");
}
}
public void testLongFlags(String s) {
if((LONG_FLAGS & 1) == 0) {
System.out.println("No flag");
}
if(((LONG_FLAGS) & (LONG_FLAG2)) != 0 && s == null) {
System.out.println("Flag2");
}
if(<warning descr="Condition '(3L & 1L) == 2L' is always 'false'">(3L & 1L) == 2L</warning>) {
System.out.println("Literals");
}
}
}