com.oracle.truffle.js.nodes

Class JSNodeUtil

java.lang.Object

com.oracle.truffle.js.nodes.JSNodeUtil

public final class JSNodeUtil
extends Object

Method Summary

Modifier and Type	Method and Description
static String	formatSourceSection(com.oracle.truffle.api.nodes.Node node) Formats a source section of a node in human readable form.
static JavaScriptNode	getWrappedNode(JavaScriptNode node) Helper to retrieve the node wrapped by a given JavaScript node.
static boolean	hasExactlyOneRootBodyTag(JavaScriptNode body)
static boolean	hasImportantTag(JavaScriptNode node) Returns true if this sequence node has an important tag that we must preserve, so we must not eliminate the node during block flattening.
static boolean	isInputGeneratingNode(com.oracle.truffle.api.nodes.Node node)
static boolean	isTaggedNode(com.oracle.truffle.api.nodes.Node node)
static boolean	isWrapperNode(JavaScriptNode node) Returns true if node is a JavaScript node that is considered a wrapper.
static String	resolveName(com.oracle.truffle.api.nodes.RootNode root)
static com.oracle.truffle.api.nodes.SlowPathException	slowPathException()

Methods inherited from class java.lang.Object

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

Method Detail

slowPathException

public static com.oracle.truffle.api.nodes.SlowPathException slowPathException()

hasImportantTag

public static boolean hasImportantTag(JavaScriptNode node)

Returns true if this sequence node has an important tag that we must preserve, so we must not eliminate the node during block flattening.

resolveName

public static String resolveName(com.oracle.truffle.api.nodes.RootNode root)

formatSourceSection

public static String formatSourceSection(com.oracle.truffle.api.nodes.Node node)

Formats a source section of a node in human readable form. If no source section could be found it looks up the parent hierarchy until it finds a source section. Nodes where this was required append a '~' at the end.

Parameters:

node - the node to format.

Returns:

a formatted source section string

hasExactlyOneRootBodyTag

public static boolean hasExactlyOneRootBodyTag(JavaScriptNode body)

isWrapperNode

public static boolean isWrapperNode(JavaScriptNode node)

Returns true if node is a JavaScript node that is considered a wrapper.

getWrappedNode

public static JavaScriptNode getWrappedNode(JavaScriptNode node)

Helper to retrieve the node wrapped by a given JavaScript node.

Parameters:

node - a JavaScript node that is possibly a wrapper

Returns:

the (delegate) node that is wrapped by the parameter node, or node itself if it is not a wrapper that can be stripped

isTaggedNode

public static boolean isTaggedNode(com.oracle.truffle.api.nodes.Node node)

isInputGeneratingNode

public static boolean isInputGeneratingNode(com.oracle.truffle.api.nodes.Node node)