org.extendj.ast.MonitorExit Maven / Gradle / Ivy
/* This file was generated with JastAdd2 (http://jastadd.org) version 2.3.0 */
package org.extendj.ast;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.ArrayList;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;
import java.util.zip.*;
import java.io.*;
import org.jastadd.util.PrettyPrintable;
import org.jastadd.util.PrettyPrinter;
import org.jastadd.util.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.IOException;
import java.util.Set;
import beaver.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentSkipListMap;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
/**
* Used in code generation to represent the implicit monitor exit
* call at the end of a synchronized block.
* @ast node
* @declaredat /home/jesper/git/extendj/java4/grammar/Java.ast:317
* @astdecl MonitorExit : Block;
* @production MonitorExit : {@link Block};
*/
public class MonitorExit extends Block implements Cloneable {
/**
* @aspect MonitorExit
* @declaredat /home/jesper/git/extendj/java4/frontend/MonitorExit.jrag:34
*/
protected SynchronizedStmt monitor = null;
/**
* @aspect MonitorExit
* @declaredat /home/jesper/git/extendj/java4/frontend/MonitorExit.jrag:36
*/
public MonitorExit(SynchronizedStmt sync) {
monitor = sync;
}
/**
* Generate bytecode for the monitor exit call.
* @aspect CreateBCode
* @declaredat /home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1955
*/
public void createBCode(CodeGeneration gen) {
gen.monitorRangeEnd(monitor.monitorId, hostType().constantPool().newLabel());
}
/**
* Generate exception handler for monitor closing.
* @param gen
* @aspect CreateBCode
* @declaredat /home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1963
*/
public void emitMonitorExitHandler(CodeGeneration gen) {
int handler_lbl = handler_label();
int end_lbl = handler_end_label();
int num = localNum() + 1;
// Handler start.
gen.addLabel(handler_lbl);
gen.ASTORE(num, VerificationTypes.THROWABLE);
gen.ALOAD(monitor.localNum(), VerificationTypes.OBJECT);
gen.MONITOREXIT();
// Handler end.
gen.addLabel(end_lbl);
gen.ALOAD(num, VerificationTypes.THROWABLE);
gen.ATHROW();
// Add exception handler for the monitor closing.
// See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4414101.
gen.addCatchAll(handler_lbl, end_lbl, handler_lbl);
}
/**
* @declaredat ASTNode:1
*/
public MonitorExit() {
super();
}
/**
* Initializes the child array to the correct size.
* Initializes List and Opt nta children.
* @apilevel internal
* @ast method
* @declaredat ASTNode:10
*/
public void init$Children() {
children = new ASTNode[1];
setChild(new List(), 0);
}
/**
* @declaredat ASTNode:14
*/
@ASTNodeAnnotation.Constructor(
name = {"Stmt"},
type = {"List"},
kind = {"List"}
)
public MonitorExit(List p0) {
setChild(p0, 0);
}
/** @apilevel low-level
* @declaredat ASTNode:23
*/
protected int numChildren() {
return 1;
}
/**
* @apilevel internal
* @declaredat ASTNode:29
*/
public boolean mayHaveRewrite() {
return false;
}
/** @apilevel internal
* @declaredat ASTNode:33
*/
public void flushAttrCache() {
super.flushAttrCache();
handler_label_reset();
handler_end_label_reset();
end_label_reset();
}
/** @apilevel internal
* @declaredat ASTNode:40
*/
public void flushCollectionCache() {
super.flushCollectionCache();
}
/** @apilevel internal
* @declaredat ASTNode:44
*/
public MonitorExit clone() throws CloneNotSupportedException {
MonitorExit node = (MonitorExit) super.clone();
return node;
}
/** @apilevel internal
* @declaredat ASTNode:49
*/
public MonitorExit copy() {
try {
MonitorExit node = (MonitorExit) clone();
node.parent = null;
if (children != null) {
node.children = (ASTNode[]) children.clone();
}
return node;
} catch (CloneNotSupportedException e) {
throw new Error("Error: clone not supported for " + getClass().getName());
}
}
/**
* Create a deep copy of the AST subtree at this node.
* The copy is dangling, i.e. has no parent.
* @return dangling copy of the subtree at this node
* @apilevel low-level
* @deprecated Please use treeCopy or treeCopyNoTransform instead
* @declaredat ASTNode:68
*/
@Deprecated
public MonitorExit fullCopy() {
return treeCopyNoTransform();
}
/**
* Create a deep copy of the AST subtree at this node.
* The copy is dangling, i.e. has no parent.
* @return dangling copy of the subtree at this node
* @apilevel low-level
* @declaredat ASTNode:78
*/
public MonitorExit treeCopyNoTransform() {
MonitorExit tree = (MonitorExit) copy();
if (children != null) {
for (int i = 0; i < children.length; ++i) {
ASTNode child = (ASTNode) children[i];
if (child != null) {
child = child.treeCopyNoTransform();
tree.setChild(child, i);
}
}
}
return tree;
}
/**
* Create a deep copy of the AST subtree at this node.
* The subtree of this node is traversed to trigger rewrites before copy.
* The copy is dangling, i.e. has no parent.
* @return dangling copy of the subtree at this node
* @apilevel low-level
* @declaredat ASTNode:98
*/
public MonitorExit treeCopy() {
MonitorExit tree = (MonitorExit) copy();
if (children != null) {
for (int i = 0; i < children.length; ++i) {
ASTNode child = (ASTNode) getChild(i);
if (child != null) {
child = child.treeCopy();
tree.setChild(child, i);
}
}
}
return tree;
}
/** @apilevel internal
* @declaredat ASTNode:112
*/
protected boolean is$Equal(ASTNode node) {
return super.is$Equal(node);
}
/**
* Replaces the Stmt list.
* @param list The new list node to be used as the Stmt list.
* @apilevel high-level
*/
public void setStmtList(List list) {
setChild(list, 0);
}
/**
* Retrieves the number of children in the Stmt list.
* @return Number of children in the Stmt list.
* @apilevel high-level
*/
public int getNumStmt() {
return getStmtList().getNumChild();
}
/**
* Retrieves the number of children in the Stmt list.
* Calling this method will not trigger rewrites.
* @return Number of children in the Stmt list.
* @apilevel low-level
*/
public int getNumStmtNoTransform() {
return getStmtListNoTransform().getNumChildNoTransform();
}
/**
* Retrieves the element at index {@code i} in the Stmt list.
* @param i Index of the element to return.
* @return The element at position {@code i} in the Stmt list.
* @apilevel high-level
*/
public Stmt getStmt(int i) {
return (Stmt) getStmtList().getChild(i);
}
/**
* Check whether the Stmt list has any children.
* @return {@code true} if it has at least one child, {@code false} otherwise.
* @apilevel high-level
*/
public boolean hasStmt() {
return getStmtList().getNumChild() != 0;
}
/**
* Append an element to the Stmt list.
* @param node The element to append to the Stmt list.
* @apilevel high-level
*/
public void addStmt(Stmt node) {
List list = (parent == null) ? getStmtListNoTransform() : getStmtList();
list.addChild(node);
}
/** @apilevel low-level
*/
public void addStmtNoTransform(Stmt node) {
List list = getStmtListNoTransform();
list.addChild(node);
}
/**
* Replaces the Stmt list element at index {@code i} with the new node {@code node}.
* @param node The new node to replace the old list element.
* @param i The list index of the node to be replaced.
* @apilevel high-level
*/
public void setStmt(Stmt node, int i) {
List list = getStmtList();
list.setChild(node, i);
}
/**
* Retrieves the Stmt list.
* @return The node representing the Stmt list.
* @apilevel high-level
*/
@ASTNodeAnnotation.ListChild(name="Stmt")
public List getStmtList() {
List list = (List) getChild(0);
return list;
}
/**
* Retrieves the Stmt list.
* This method does not invoke AST transformations.
* @return The node representing the Stmt list.
* @apilevel low-level
*/
public List getStmtListNoTransform() {
return (List) getChildNoTransform(0);
}
/**
* @return the element at index {@code i} in the Stmt list without
* triggering rewrites.
*/
public Stmt getStmtNoTransform(int i) {
return (Stmt) getStmtListNoTransform().getChildNoTransform(i);
}
/**
* Retrieves the Stmt list.
* @return The node representing the Stmt list.
* @apilevel high-level
*/
public List getStmts() {
return getStmtList();
}
/**
* Retrieves the Stmt list.
* This method does not invoke AST transformations.
* @return The node representing the Stmt list.
* @apilevel low-level
*/
public List getStmtsNoTransform() {
return getStmtListNoTransform();
}
/** @apilevel internal */
private void handler_label_reset() {
handler_label_computed = null;
}
/** @apilevel internal */
protected ASTState.Cycle handler_label_computed = null;
/** @apilevel internal */
protected int handler_label_value;
/**
* @attribute syn
* @aspect MonitorExit
* @declaredat /home/jesper/git/extendj/java4/backend/MonitorExit.jrag:32
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="MonitorExit", declaredAt="/home/jesper/git/extendj/java4/backend/MonitorExit.jrag:32")
public int handler_label() {
ASTState state = state();
if (handler_label_computed == ASTState.NON_CYCLE || handler_label_computed == state().cycle()) {
return handler_label_value;
}
handler_label_value = hostType().constantPool().newLabel();
if (state().inCircle()) {
handler_label_computed = state().cycle();
} else {
handler_label_computed = ASTState.NON_CYCLE;
}
return handler_label_value;
}
/** @apilevel internal */
private void handler_end_label_reset() {
handler_end_label_computed = null;
}
/** @apilevel internal */
protected ASTState.Cycle handler_end_label_computed = null;
/** @apilevel internal */
protected int handler_end_label_value;
/**
* @attribute syn
* @aspect MonitorExit
* @declaredat /home/jesper/git/extendj/java4/backend/MonitorExit.jrag:34
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="MonitorExit", declaredAt="/home/jesper/git/extendj/java4/backend/MonitorExit.jrag:34")
public int handler_end_label() {
ASTState state = state();
if (handler_end_label_computed == ASTState.NON_CYCLE || handler_end_label_computed == state().cycle()) {
return handler_end_label_value;
}
handler_end_label_value = hostType().constantPool().newLabel();
if (state().inCircle()) {
handler_end_label_computed = state().cycle();
} else {
handler_end_label_computed = ASTState.NON_CYCLE;
}
return handler_end_label_value;
}
/** @apilevel internal */
private void end_label_reset() {
end_label_computed = null;
}
/** @apilevel internal */
protected ASTState.Cycle end_label_computed = null;
/** @apilevel internal */
protected int end_label_value;
/**
* @attribute syn
* @aspect MonitorExit
* @declaredat /home/jesper/git/extendj/java4/backend/MonitorExit.jrag:36
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="MonitorExit", declaredAt="/home/jesper/git/extendj/java4/backend/MonitorExit.jrag:36")
public int end_label() {
ASTState state = state();
if (end_label_computed == ASTState.NON_CYCLE || end_label_computed == state().cycle()) {
return end_label_value;
}
end_label_value = hostType().constantPool().newLabel();
if (state().inCircle()) {
end_label_computed = state().cycle();
} else {
end_label_computed = ASTState.NON_CYCLE;
}
return end_label_value;
}
/** @apilevel internal */
public ASTNode rewriteTo() {
return super.rewriteTo();
}
/** @apilevel internal */
public boolean canRewrite() {
return false;
}
}