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Add ExtractorUtil method for checking input conditions

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Unlike Assertions, the introduced method cannot be disabled and throws
a ParserException instead. This method is meant to replace regular
assertions (which throw RuntimeExceptions) which check input in the
parsing code.

PiperOrigin-RevId: 375085160
This commit is contained in:
aquilescanta 2021-05-21 16:02:29 +01:00 committed by Oliver Woodman
parent e8ca443389
commit 3f33f10a32
1 changed files with 16 additions and 1 deletions
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17
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/ExtractorUtil.java
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@ -15,11 +15,26 @@
*/
package com.google.android.exoplayer2.extractor;
import androidx.annotation.Nullable;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.ParserException;
import java.io.IOException;
import org.checkerframework.dataflow.qual.Pure;
/** Extractor related utility methods. */
/* package */ final class ExtractorUtil {
public final class ExtractorUtil {
/**
* If {@code expression} is false, throws a {@link ParserException#createForMalformedContainer
* container malformed ParserException} with the given message. Otherwise, does nothing.
*/
@Pure
public static void checkContainerInput(boolean expression, @Nullable String message)
throws ParserException {
if (!expression) {
throw ParserException.createForMalformedContainer(message, /* cause= */ null);
}
}
/**
* Peeks {@code length} bytes from the input peek position, or all the bytes to the end of the