Mercurial > hg > graal-compiler
diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java @ 14566:6681b9eb3f4c
Truffle: API cleanup and javadoc for CallNodes.
author | Christian Humer <christian.humer@gmail.com> |
---|---|
date | Mon, 17 Mar 2014 14:29:45 +0100 |
parents | 9c01fabfb167 |
children | 1422f0bd55e3 |
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--- a/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java Mon Mar 17 14:29:45 2014 +0100 +++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java Mon Mar 17 14:29:45 2014 +0100 @@ -36,7 +36,7 @@ */ public abstract class RootNode extends Node { - private CallTarget callTarget; + private RootCallTarget callTarget; private final FrameDescriptor frameDescriptor; /* @@ -61,10 +61,25 @@ } } + /** + * Creates a split {@link RootNode} based on the current {@link RootNode}. This method should + * return an AST that was never executed and must not be shared with other {@link RootNode} or + * {@link CallTarget} instances. This method is intended to be overridden by a subclass. + * + * @return the split {@link RootNode} + */ public RootNode split() { - return NodeUtil.cloneNode(this); + throw new UnsupportedOperationException(); } + /** + * Returns <code>true</code> if this {@link RootNode} can be split. A {@link RootNode} can be + * split inside of a {@link CallTarget} that is invoked using a {@link CallNode}. If this method + * returns <code>true</code> a proper implementation of {@link #split()} must also be provided. + * This method is intended to be overridden by a subclass. + * + * @return <code>true</code> if splittable else <code>false</code>. + */ public boolean isSplittable() { return false; } @@ -73,7 +88,7 @@ * Reports the execution count of a loop that is a child of this node. The optimization * heuristics can use the loop count to guide compilation and inlining. */ - public void reportLoopCount(int count) { + public final void reportLoopCount(int count) { if (getCallTarget() instanceof LoopCountReceiver) { ((LoopCountReceiver) getCallTarget()).reportLoopCount(count); } @@ -87,7 +102,7 @@ */ public abstract Object execute(VirtualFrame frame); - public CallTarget getCallTarget() { + public final RootCallTarget getCallTarget() { return callTarget; } @@ -95,17 +110,17 @@ return frameDescriptor; } - public final void setCallTarget(CallTarget callTarget) { + public final void setCallTarget(RootCallTarget callTarget) { this.callTarget = callTarget; } /* Internal API. Do not use. */ - void addCachedCallNode(CallNode callSite) { + final void addCachedCallNode(CallNode callSite) { this.cachedCallNodes.add(callSite); } /* Internal API. Do not use. */ - void removeCachedCallNode(CallNode callSite) { + final void removeCachedCallNode(CallNode callSite) { this.cachedCallNodes.remove(callSite); }