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Support recording exceptions in lazy values

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This commit is contained in:
Andrey Breslav
2013-10-01 21:04:01 +04:00
parent 38437a1c25
commit 98dc11bd1b
1 changed files with 13 additions and 7 deletions
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core/util.runtime/src/org/jetbrains/jet/storage/NullableLazyValueImpl.java
+13 -7
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@@ -17,6 +17,8 @@
package org.jetbrains.jet.storage; package org.jetbrains.jet.storage;
import org.jetbrains.annotations.Nullable; import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.utils.ExceptionUtils;
import org.jetbrains.jet.utils.WrappedValues;
public abstract class NullableLazyValueImpl<T> implements NullableLazyValue<T> { public abstract class NullableLazyValueImpl<T> implements NullableLazyValue<T> {
private static final Object NOT_COMPUTED = new Object(); private static final Object NOT_COMPUTED = new Object();
@@ -27,14 +29,18 @@ public abstract class NullableLazyValueImpl<T> implements NullableLazyValue<T> {
@Override @Override
public T compute() { public T compute() {
Object _value = value; Object _value = value;
if (_value != NOT_COMPUTED) return (T) _value; if (_value != NOT_COMPUTED) return WrappedValues.unescapeThrowable(_value);
T typedValue = doCompute(); try {
value = typedValue; T typedValue = doCompute();
value = typedValue;
postCompute(typedValue); postCompute(typedValue);
return typedValue;
return typedValue; }
catch (Throwable e) {
value = WrappedValues.escapeThrowable(e);
throw ExceptionUtils.rethrow(e);
}
} }
protected abstract T doCompute(); protected abstract T doCompute();