Package com.oracle.truffle.api.dsl

Class DSLSupport

java.lang.Object

com.oracle.truffle.api.dsl.DSLSupport

public abstract class DSLSupport
extends Object

APIs to support share code in generated code. APIs in this class are aggressively deprecated and removed in this class.

Since:

23.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	DSLSupport.SpecializationDataNode	Interface implemented by specialization data classes.

Method Summary

Modifier and Type	Method	Description
static boolean	assertIdempotence(boolean guardValue)	Helper method for DSL generated code to assert idempotence.
static <T extends Enum<?>> T[]	lookupEnumConstants(Class<T> c)	Looks up shared enum constants for DSL generated code.
static <T extends NodeInterface> T	maybeInsert(Node node, T o)	Inserts a node if a NodeInterface dynamically implements Node.
static <T extends NodeInterface> T[]	maybeInsert(Node node, T[] o)	Inserts a node array if a NodeInterface[] dynamically implements Node[].

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

lookupEnumConstants

public static <T extends Enum<?>> T[] lookupEnumConstants(Class<T> c)

Looks up shared enum constants for DSL generated code. This avoids unnecessary enum arrays in the heap when the DSL creates constants with enum values to avoid the memory overhead of calling the values() method of enum classes.

Since:

23.0

maybeInsert

public static <T extends NodeInterface> T maybeInsert(Node node,
 T o)

Inserts a node if a NodeInterface dynamically implements Node. Intended for generated code only.

Since:

23.0

maybeInsert

public static <T extends NodeInterface> T[] maybeInsert(Node node,
 T[] o)

Inserts a node array if a NodeInterface[] dynamically implements Node[]. Intended for generated code only.

Since:

23.0

assertIdempotence

public static boolean assertIdempotence(boolean guardValue)

Helper method for DSL generated code to assert idempotence.

Since:

23.0

See Also:

• Idempotent
• NonIdempotent