Package com.tonic.analysis.source.ast

Class ASTMutations

java.lang.Object

com.tonic.analysis.source.ast.ASTMutations

public final class ASTMutations
extends Object

Deep clone, replace and remove operations over AST nodes.

Method Summary

Modifier and Type	Method	Description
static <T extends ASTNode> T	deepClone(T node)	Copies a node and its whole subtree, leaving the copy parentless as the root of a new tree.
static boolean	remove(ASTNode node)	Detaches a node from the list slot of its parent that holds it - block statements, call arguments, loop init and update entries and the like.
static boolean	replace(ASTNode oldNode, ASTNode newNode)	Swaps a node for another in whichever slot of its parent holds it.

Methods inherited from class java.lang.Object

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

Method Detail

deepClone

public static <T extends ASTNode> T deepClone(T node)

Copies a node and its whole subtree, leaving the copy parentless as the root of a new tree.

Type Parameters:

T - the node type

Parameters:

node - the subtree root to copy, or null

Returns:

the copied subtree, or null if node was null

replace

public static boolean replace(ASTNode oldNode,
                              ASTNode newNode)

Swaps a node for another in whichever slot of its parent holds it.

Parameters:

oldNode - the node to replace, which must already be attached to a parent

newNode - the replacement, which must fit the slot's kind

Returns:

true if the slot was found and updated

remove

public static boolean remove(ASTNode node)

Detaches a node from the list slot of its parent that holds it - block statements, call arguments, loop init and update entries and the like.

Parameters:

node - the node to detach

Returns:

true if the parent held it in a list slot and it was removed