org.graalvm.compiler.core.common.spi

Interface ConstantFieldProvider

All Known Implementing Classes:

HotSpotConstantFieldProvider, HotSpotGraalConstantFieldProvider, JavaConstantFieldProvider, TruffleConstantFieldProvider

public interface ConstantFieldProvider

Implements the logic that decides whether a field read should be constant folded.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	ConstantFieldProvider.ConstantFieldTool<T>

Method Summary

Modifier and Type	Method and Description
default boolean	maybeFinal(ResolvedJavaField field) Returns true if a field may be constant folded even though it is not declared as final.
<T> T	readConstantField(ResolvedJavaField field, ConstantFieldProvider.ConstantFieldTool<T> tool) Decide whether a read from the field should be constant folded.

Method Detail

readConstantField

<T> T readConstantField(ResolvedJavaField field,
                        ConstantFieldProvider.ConstantFieldTool<T> tool)

Decide whether a read from the field should be constant folded. This should return ConstantFieldProvider.ConstantFieldTool.foldConstant(JavaConstant) or ConstantFieldProvider.ConstantFieldTool.foldStableArray(JavaConstant, int, boolean) if the read should be constant folded, or null otherwise.

maybeFinal

default boolean maybeFinal(ResolvedJavaField field)

Returns true if a field may be constant folded even though it is not declared as final. This applies to well-known fields such as String#hash.