org.extendj.ast.IfStmt 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 java.io.BufferedInputStream;
import java.io.DataInputStream;
import org.jastadd.util.PrettyPrintable;
import org.jastadd.util.PrettyPrinter;
import java.io.FileNotFoundException;
import java.io.InputStream;
import org.jastadd.util.*;
import java.io.File;
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;
/**
* @ast node
* @declaredat /home/jesper/git/extendj/java4/grammar/Java.ast:301
* @astdecl IfStmt : Stmt ::= Condition:Expr Then:Stmt [Else:Stmt];
* @production IfStmt : {@link Stmt} ::= Condition:{@link Expr} Then:{@link Stmt} [Else:{@link Stmt}];
*/
public class IfStmt extends Stmt implements Cloneable {
/**
* @aspect NodeConstructors
* @declaredat /home/jesper/git/extendj/java4/frontend/NodeConstructors.jrag:80
*/
public IfStmt(Expr cond, Stmt thenBranch) {
this(cond, thenBranch, new Opt());
}
/**
* @aspect NodeConstructors
* @declaredat /home/jesper/git/extendj/java4/frontend/NodeConstructors.jrag:84
*/
public IfStmt(Expr cond, Stmt thenBranch, Stmt elseBranch) {
this(cond, thenBranch, new Opt(elseBranch));
}
/**
* @aspect PrettyPrintUtil
* @declaredat /home/jesper/git/extendj/java4/frontend/PrettyPrintUtil.jrag:167
*/
public void prettyPrint(PrettyPrinter out) {
out.print("if (");
out.print(getCondition());
out.print(") ");
if (getThen() instanceof Block) {
out.print(getThen());
} else {
out.print("{");
out.println();
out.indent(1);
out.print(getThen());
out.indent(0);
out.println();
out.print("}");
}
if (hasElse()) {
out.print(" else ");
if (getElse() instanceof Block) {
out.print(getElse());
} else {
out.print("{");
out.println();
out.indent(1);
out.print(getElse());
out.println();
out.print("}");
}
}
}
/**
* @aspect CreateBCode
* @declaredat /home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1616
*/
public void createBCode(CodeGeneration gen) {
super.createBCode(gen);
int elseBranch = else_branch_label();
int thenBranch = then_branch_label();
int endBranch = end_label();
if (!getCondition().isConstant()) {
getCondition().branchFalse(gen, elseBranch);
}
gen.addLabel(thenBranch);
if (getCondition().canBeTrue()) {
getThen().createBCode(gen);
if (getThen().canCompleteNormally() && hasElse() && getCondition().canBeFalse()) {
gen.GOTO(endBranch);
}
}
gen.addLabel(elseBranch);
if (hasElse() && getCondition().canBeFalse()) {
getElse().createBCode(gen);
}
gen.addLabel(endBranch);
}
/**
* @declaredat ASTNode:1
*/
public IfStmt() {
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[3];
setChild(new Opt(), 2);
}
/**
* @declaredat ASTNode:14
*/
@ASTNodeAnnotation.Constructor(
name = {"Condition", "Then", "Else"},
type = {"Expr", "Stmt", "Opt"},
kind = {"Child", "Child", "Opt"}
)
public IfStmt(Expr p0, Stmt p1, Opt p2) {
setChild(p0, 0);
setChild(p1, 1);
setChild(p2, 2);
}
/** @apilevel low-level
* @declaredat ASTNode:25
*/
protected int numChildren() {
return 3;
}
/**
* @apilevel internal
* @declaredat ASTNode:31
*/
public boolean mayHaveRewrite() {
return false;
}
/** @apilevel internal
* @declaredat ASTNode:35
*/
public void flushAttrCache() {
super.flushAttrCache();
canCompleteNormally_reset();
assignedAfter_Variable_reset();
unassignedAfter_Variable_reset();
else_branch_label_reset();
then_branch_label_reset();
end_label_reset();
}
/** @apilevel internal
* @declaredat ASTNode:45
*/
public void flushCollectionCache() {
super.flushCollectionCache();
}
/** @apilevel internal
* @declaredat ASTNode:49
*/
public IfStmt clone() throws CloneNotSupportedException {
IfStmt node = (IfStmt) super.clone();
return node;
}
/** @apilevel internal
* @declaredat ASTNode:54
*/
public IfStmt copy() {
try {
IfStmt node = (IfStmt) 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:73
*/
@Deprecated
public IfStmt 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:83
*/
public IfStmt treeCopyNoTransform() {
IfStmt tree = (IfStmt) 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:103
*/
public IfStmt treeCopy() {
IfStmt tree = (IfStmt) 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:117
*/
protected boolean is$Equal(ASTNode node) {
return super.is$Equal(node);
}
/**
* Replaces the Condition child.
* @param node The new node to replace the Condition child.
* @apilevel high-level
*/
public void setCondition(Expr node) {
setChild(node, 0);
}
/**
* Retrieves the Condition child.
* @return The current node used as the Condition child.
* @apilevel high-level
*/
@ASTNodeAnnotation.Child(name="Condition")
public Expr getCondition() {
return (Expr) getChild(0);
}
/**
* Retrieves the Condition child.
* This method does not invoke AST transformations.
* @return The current node used as the Condition child.
* @apilevel low-level
*/
public Expr getConditionNoTransform() {
return (Expr) getChildNoTransform(0);
}
/**
* Replaces the Then child.
* @param node The new node to replace the Then child.
* @apilevel high-level
*/
public void setThen(Stmt node) {
setChild(node, 1);
}
/**
* Retrieves the Then child.
* @return The current node used as the Then child.
* @apilevel high-level
*/
@ASTNodeAnnotation.Child(name="Then")
public Stmt getThen() {
return (Stmt) getChild(1);
}
/**
* Retrieves the Then child.
* This method does not invoke AST transformations.
* @return The current node used as the Then child.
* @apilevel low-level
*/
public Stmt getThenNoTransform() {
return (Stmt) getChildNoTransform(1);
}
/**
* Replaces the optional node for the Else child. This is the Opt
* node containing the child Else, not the actual child!
* @param opt The new node to be used as the optional node for the Else child.
* @apilevel low-level
*/
public void setElseOpt(Opt opt) {
setChild(opt, 2);
}
/**
* Replaces the (optional) Else child.
* @param node The new node to be used as the Else child.
* @apilevel high-level
*/
public void setElse(Stmt node) {
getElseOpt().setChild(node, 0);
}
/**
* Check whether the optional Else child exists.
* @return {@code true} if the optional Else child exists, {@code false} if it does not.
* @apilevel high-level
*/
public boolean hasElse() {
return getElseOpt().getNumChild() != 0;
}
/**
* Retrieves the (optional) Else child.
* @return The Else child, if it exists. Returns {@code null} otherwise.
* @apilevel low-level
*/
public Stmt getElse() {
return (Stmt) getElseOpt().getChild(0);
}
/**
* Retrieves the optional node for the Else child. This is the Opt node containing the child Else, not the actual child!
* @return The optional node for child the Else child.
* @apilevel low-level
*/
@ASTNodeAnnotation.OptChild(name="Else")
public Opt getElseOpt() {
return (Opt) getChild(2);
}
/**
* Retrieves the optional node for child Else. This is the Opt node containing the child Else, not the actual child!
* This method does not invoke AST transformations.
* @return The optional node for child Else.
* @apilevel low-level
*/
public Opt getElseOptNoTransform() {
return (Opt) getChildNoTransform(2);
}
/** @apilevel internal */
private void canCompleteNormally_reset() {
canCompleteNormally_computed = null;
}
/** @apilevel internal */
protected ASTState.Cycle canCompleteNormally_computed = null;
/** @apilevel internal */
protected boolean canCompleteNormally_value;
/**
* @attribute syn
* @aspect UnreachableStatements
* @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:50
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="UnreachableStatements", declaredAt="/home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:50")
public boolean canCompleteNormally() {
ASTState state = state();
if (canCompleteNormally_computed == ASTState.NON_CYCLE || canCompleteNormally_computed == state().cycle()) {
return canCompleteNormally_value;
}
canCompleteNormally_value = (reachable() && !hasElse())
|| (getThen().canCompleteNormally() || (hasElse() && getElse().canCompleteNormally()));
if (state().inCircle()) {
canCompleteNormally_computed = state().cycle();
} else {
canCompleteNormally_computed = ASTState.NON_CYCLE;
}
return canCompleteNormally_value;
}
/** @apilevel internal */
private void assignedAfter_Variable_reset() {
assignedAfter_Variable_values = null;
}
protected java.util.Map assignedAfter_Variable_values;
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN, isCircular=true)
@ASTNodeAnnotation.Source(aspect="DefiniteAssignment", declaredAt="/home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:264")
public boolean assignedAfter(Variable v) {
Object _parameters = v;
if (assignedAfter_Variable_values == null) assignedAfter_Variable_values = new java.util.HashMap(4);
ASTState.CircularValue _value;
if (assignedAfter_Variable_values.containsKey(_parameters)) {
Object _cache = assignedAfter_Variable_values.get(_parameters);
if (!(_cache instanceof ASTState.CircularValue)) {
return (Boolean) _cache;
} else {
_value = (ASTState.CircularValue) _cache;
}
} else {
_value = new ASTState.CircularValue();
assignedAfter_Variable_values.put(_parameters, _value);
_value.value = true;
}
ASTState state = state();
if (!state.inCircle() || state.calledByLazyAttribute()) {
state.enterCircle();
boolean new_assignedAfter_Variable_value;
do {
_value.cycle = state.nextCycle();
new_assignedAfter_Variable_value = hasElse()
? getThen().assignedAfter(v) && getElse().assignedAfter(v)
: getThen().assignedAfter(v) && getCondition().assignedAfterFalse(v);
if (((Boolean)_value.value) != new_assignedAfter_Variable_value) {
state.setChangeInCycle();
_value.value = new_assignedAfter_Variable_value;
}
} while (state.testAndClearChangeInCycle());
assignedAfter_Variable_values.put(_parameters, new_assignedAfter_Variable_value);
state.leaveCircle();
return new_assignedAfter_Variable_value;
} else if (_value.cycle != state.cycle()) {
_value.cycle = state.cycle();
boolean new_assignedAfter_Variable_value = hasElse()
? getThen().assignedAfter(v) && getElse().assignedAfter(v)
: getThen().assignedAfter(v) && getCondition().assignedAfterFalse(v);
if (((Boolean)_value.value) != new_assignedAfter_Variable_value) {
state.setChangeInCycle();
_value.value = new_assignedAfter_Variable_value;
}
return new_assignedAfter_Variable_value;
} else {
return (Boolean) _value.value;
}
}
/** @apilevel internal */
private void unassignedAfter_Variable_reset() {
unassignedAfter_Variable_values = null;
}
protected java.util.Map unassignedAfter_Variable_values;
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN, isCircular=true)
@ASTNodeAnnotation.Source(aspect="DefiniteUnassignment", declaredAt="/home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:895")
public boolean unassignedAfter(Variable v) {
Object _parameters = v;
if (unassignedAfter_Variable_values == null) unassignedAfter_Variable_values = new java.util.HashMap(4);
ASTState.CircularValue _value;
if (unassignedAfter_Variable_values.containsKey(_parameters)) {
Object _cache = unassignedAfter_Variable_values.get(_parameters);
if (!(_cache instanceof ASTState.CircularValue)) {
return (Boolean) _cache;
} else {
_value = (ASTState.CircularValue) _cache;
}
} else {
_value = new ASTState.CircularValue();
unassignedAfter_Variable_values.put(_parameters, _value);
_value.value = true;
}
ASTState state = state();
if (!state.inCircle() || state.calledByLazyAttribute()) {
state.enterCircle();
boolean new_unassignedAfter_Variable_value;
do {
_value.cycle = state.nextCycle();
new_unassignedAfter_Variable_value = hasElse()
? getThen().unassignedAfter(v) && getElse().unassignedAfter(v)
: getThen().unassignedAfter(v) && getCondition().unassignedAfterFalse(v);
if (((Boolean)_value.value) != new_unassignedAfter_Variable_value) {
state.setChangeInCycle();
_value.value = new_unassignedAfter_Variable_value;
}
} while (state.testAndClearChangeInCycle());
unassignedAfter_Variable_values.put(_parameters, new_unassignedAfter_Variable_value);
state.leaveCircle();
return new_unassignedAfter_Variable_value;
} else if (_value.cycle != state.cycle()) {
_value.cycle = state.cycle();
boolean new_unassignedAfter_Variable_value = hasElse()
? getThen().unassignedAfter(v) && getElse().unassignedAfter(v)
: getThen().unassignedAfter(v) && getCondition().unassignedAfterFalse(v);
if (((Boolean)_value.value) != new_unassignedAfter_Variable_value) {
state.setChangeInCycle();
_value.value = new_unassignedAfter_Variable_value;
}
return new_unassignedAfter_Variable_value;
} else {
return (Boolean) _value.value;
}
}
/** @apilevel internal */
private void else_branch_label_reset() {
else_branch_label_computed = null;
}
/** @apilevel internal */
protected ASTState.Cycle else_branch_label_computed = null;
/** @apilevel internal */
protected int else_branch_label_value;
/**
* @attribute syn
* @aspect CreateBCode
* @declaredat /home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1610
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="CreateBCode", declaredAt="/home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1610")
public int else_branch_label() {
ASTState state = state();
if (else_branch_label_computed == ASTState.NON_CYCLE || else_branch_label_computed == state().cycle()) {
return else_branch_label_value;
}
else_branch_label_value = hostType().constantPool().newLabel();
if (state().inCircle()) {
else_branch_label_computed = state().cycle();
} else {
else_branch_label_computed = ASTState.NON_CYCLE;
}
return else_branch_label_value;
}
/** @apilevel internal */
private void then_branch_label_reset() {
then_branch_label_computed = null;
}
/** @apilevel internal */
protected ASTState.Cycle then_branch_label_computed = null;
/** @apilevel internal */
protected int then_branch_label_value;
/**
* @attribute syn
* @aspect CreateBCode
* @declaredat /home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1612
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="CreateBCode", declaredAt="/home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1612")
public int then_branch_label() {
ASTState state = state();
if (then_branch_label_computed == ASTState.NON_CYCLE || then_branch_label_computed == state().cycle()) {
return then_branch_label_value;
}
then_branch_label_value = hostType().constantPool().newLabel();
if (state().inCircle()) {
then_branch_label_computed = state().cycle();
} else {
then_branch_label_computed = ASTState.NON_CYCLE;
}
return then_branch_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 CreateBCode
* @declaredat /home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1614
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="CreateBCode", declaredAt="/home/jesper/git/extendj/java4/backend/CreateBCode.jrag:1614")
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;
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:49
* @apilevel internal
*/
public boolean Define_reachable(ASTNode _callerNode, ASTNode _childNode) {
if (_callerNode == getElseOptNoTransform()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:204
return reachable();
}
else if (getThenNoTransform() != null && _callerNode == getThen()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:203
return reachable();
}
else {
return getParent().Define_reachable(this, _callerNode);
}
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:49
* @apilevel internal
* @return {@code true} if this node has an equation for the inherited attribute reachable
*/
protected boolean canDefine_reachable(ASTNode _callerNode, ASTNode _childNode) {
return true;
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:207
* @apilevel internal
*/
public boolean Define_reportUnreachable(ASTNode _callerNode, ASTNode _childNode) {
if (_callerNode == getElseOptNoTransform()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:210
return reachable();
}
else if (getThenNoTransform() != null && _callerNode == getThen()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:209
return reachable();
}
else {
return getParent().Define_reportUnreachable(this, _callerNode);
}
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/UnreachableStatements.jrag:207
* @apilevel internal
* @return {@code true} if this node has an equation for the inherited attribute reportUnreachable
*/
protected boolean canDefine_reportUnreachable(ASTNode _callerNode, ASTNode _childNode) {
return true;
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:256
* @apilevel internal
*/
public boolean Define_assignedBefore(ASTNode _callerNode, ASTNode _childNode, Variable v) {
if (_callerNode == getElseOptNoTransform()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:687
return getCondition().assignedAfterFalse(v);
}
else if (getThenNoTransform() != null && _callerNode == getThen()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:685
return getCondition().assignedAfterTrue(v);
}
else if (getConditionNoTransform() != null && _callerNode == getCondition()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:683
return assignedBefore(v);
}
else {
return getParent().Define_assignedBefore(this, _callerNode, v);
}
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:256
* @apilevel internal
* @return {@code true} if this node has an equation for the inherited attribute assignedBefore
*/
protected boolean canDefine_assignedBefore(ASTNode _callerNode, ASTNode _childNode, Variable v) {
return true;
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:887
* @apilevel internal
*/
public boolean Define_unassignedBefore(ASTNode _callerNode, ASTNode _childNode, Variable v) {
if (_callerNode == getElseOptNoTransform()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:1357
return getCondition().unassignedAfterFalse(v);
}
else if (getThenNoTransform() != null && _callerNode == getThen()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:1355
return getCondition().unassignedAfterTrue(v);
}
else if (getConditionNoTransform() != null && _callerNode == getCondition()) {
// @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:1353
return unassignedBefore(v);
}
else {
return getParent().Define_unassignedBefore(this, _callerNode, v);
}
}
/**
* @declaredat /home/jesper/git/extendj/java4/frontend/DefiniteAssignment.jrag:887
* @apilevel internal
* @return {@code true} if this node has an equation for the inherited attribute unassignedBefore
*/
protected boolean canDefine_unassignedBefore(ASTNode _callerNode, ASTNode _childNode, Variable v) {
return true;
}
/** @apilevel internal */
public ASTNode rewriteTo() {
return super.rewriteTo();
}
/** @apilevel internal */
public boolean canRewrite() {
return false;
}
/** @apilevel internal */
protected void collect_contributors_CompilationUnit_problems(CompilationUnit _root, java.util.Map> _map) {
// @declaredat /home/jesper/git/extendj/java4/frontend/TypeCheck.jrag:433
if (!getCondition().type().isBoolean()) {
{
java.util.Set contributors = _map.get(_root);
if (contributors == null) {
contributors = new java.util.LinkedHashSet();
_map.put((ASTNode) _root, contributors);
}
contributors.add(this);
}
}
super.collect_contributors_CompilationUnit_problems(_root, _map);
}
/** @apilevel internal */
protected void contributeTo_CompilationUnit_problems(LinkedList collection) {
super.contributeTo_CompilationUnit_problems(collection);
if (!getCondition().type().isBoolean()) {
collection.add(errorf("the type of \"%s\" is %s which is not boolean",
getCondition().prettyPrint(), getCondition().type().name()));
}
}
}