org.extendj.ast.DiamondAccess Maven / Gradle / Ivy
/* This file was generated with JastAdd2 (http://jastadd.org) version 2.3.0 */
package org.extendj.ast;
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.Collection;
import java.util.Collections;
import java.util.HashSet;
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.util.LinkedHashSet;
import java.util.*;
import org.jastadd.util.PrettyPrintable;
import org.jastadd.util.PrettyPrinter;
import java.util.zip.*;
import java.io.*;
import org.jastadd.util.*;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
/**
* Type access for a generic class with an empty type parameter list.
* @ast node
* @declaredat /home/jesper/git/extendj/java7/grammar/Diamond.ast:4
* @astdecl DiamondAccess : Access ::= TypeAccess:Access;
* @production DiamondAccess : {@link Access} ::= TypeAccess:{@link Access};
*/
public class DiamondAccess extends Access implements Cloneable {
/**
* @aspect Java7PrettyPrint
* @declaredat /home/jesper/git/extendj/java7/frontend/PrettyPrint.jadd:46
*/
public void prettyPrint(PrettyPrinter out) {
out.print(getTypeAccess());
out.print("<>");
}
/**
* Choose a constructor for the diamond operator using stand-in
* methods. One stand-in method is generated for each constructor
* of the generic type. Type inference is then used to select the
* type arguments for the method, which can be used as the type
* arguments of the generic type.
* @aspect Diamond
* @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:119
*/
protected SimpleSet chooseConstructor() {
TypeDecl type = getTypeAccess().type();
assert type instanceof ParClassDecl;
GenericClassDecl genericType = (GenericClassDecl) ((ParClassDecl) type).genericDecl();
List placeholderMethods = genericType.getStandInMethodList();
return methodAccess().maxSpecific(placeholderMethods);
}
/**
* @declaredat ASTNode:1
*/
public DiamondAccess() {
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];
}
/**
* @declaredat ASTNode:13
*/
@ASTNodeAnnotation.Constructor(
name = {"TypeAccess"},
type = {"Access"},
kind = {"Child"}
)
public DiamondAccess(Access p0) {
setChild(p0, 0);
}
/** @apilevel low-level
* @declaredat ASTNode:22
*/
protected int numChildren() {
return 1;
}
/**
* @apilevel internal
* @declaredat ASTNode:28
*/
public boolean mayHaveRewrite() {
return false;
}
/** @apilevel internal
* @declaredat ASTNode:32
*/
public void flushAttrCache() {
super.flushAttrCache();
methodAccess_reset();
type_reset();
}
/** @apilevel internal
* @declaredat ASTNode:38
*/
public void flushCollectionCache() {
super.flushCollectionCache();
}
/** @apilevel internal
* @declaredat ASTNode:42
*/
public DiamondAccess clone() throws CloneNotSupportedException {
DiamondAccess node = (DiamondAccess) super.clone();
return node;
}
/** @apilevel internal
* @declaredat ASTNode:47
*/
public DiamondAccess copy() {
try {
DiamondAccess node = (DiamondAccess) 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:66
*/
@Deprecated
public DiamondAccess 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:76
*/
public DiamondAccess treeCopyNoTransform() {
DiamondAccess tree = (DiamondAccess) 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:96
*/
public DiamondAccess treeCopy() {
DiamondAccess tree = (DiamondAccess) 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:110
*/
protected boolean is$Equal(ASTNode node) {
return super.is$Equal(node);
}
/**
* Replaces the TypeAccess child.
* @param node The new node to replace the TypeAccess child.
* @apilevel high-level
*/
public void setTypeAccess(Access node) {
setChild(node, 0);
}
/**
* Retrieves the TypeAccess child.
* @return The current node used as the TypeAccess child.
* @apilevel high-level
*/
@ASTNodeAnnotation.Child(name="TypeAccess")
public Access getTypeAccess() {
return (Access) getChild(0);
}
/**
* Retrieves the TypeAccess child.
* This method does not invoke AST transformations.
* @return The current node used as the TypeAccess child.
* @apilevel low-level
*/
public Access getTypeAccessNoTransform() {
return (Access) getChildNoTransform(0);
}
/** @apilevel internal */
private void methodAccess_reset() {
methodAccess_computed = false;
methodAccess_value = null;
}
/** @apilevel internal */
protected boolean methodAccess_computed = false;
/** @apilevel internal */
protected MethodAccess methodAccess_value;
/**
* Creates a synthetic method access that is used to perform type inference
* for the diamond access.
* @attribute syn
* @aspect Diamond
* @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:56
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN, isNTA=true)
@ASTNodeAnnotation.Source(aspect="Diamond", declaredAt="/home/jesper/git/extendj/java7/frontend/Diamond.jrag:56")
public MethodAccess methodAccess() {
ASTState state = state();
if (methodAccess_computed) {
return methodAccess_value;
}
state().enterLazyAttribute();
methodAccess_value = new MethodAccess("#" + getTypeAccess().type().name(),
getClassInstanceExpr().getArgList().treeCopyNoTransform());
methodAccess_value.setParent(this);
methodAccess_computed = true;
state().leaveLazyAttribute();
return methodAccess_value;
}
/** @apilevel internal */
private void type_reset() {
type_computed = null;
type_value = null;
}
/** @apilevel internal */
protected ASTState.Cycle type_computed = null;
/** @apilevel internal */
protected TypeDecl type_value;
/**
* @attribute syn
* @aspect TypeAnalysis
* @declaredat /home/jesper/git/extendj/java4/frontend/TypeAnalysis.jrag:295
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="TypeAnalysis", declaredAt="/home/jesper/git/extendj/java4/frontend/TypeAnalysis.jrag:295")
public TypeDecl type() {
ASTState state = state();
if (type_computed == ASTState.NON_CYCLE || type_computed == state().cycle()) {
return type_value;
}
type_value = type_compute();
if (state().inCircle()) {
type_computed = state().cycle();
} else {
type_computed = ASTState.NON_CYCLE;
}
return type_value;
}
/** @apilevel internal */
private TypeDecl type_compute() {
TypeDecl accessType = getTypeAccess().type();
if (isAnonymousDecl()) {
return accessType;
}
if (getClassInstanceExpr() == null) {
// It is an error if the DiamondAccess does not occurr
// within a class instance creation expression, but this
// error is handled in typeCheck.
return accessType;
}
if (!(accessType instanceof ParClassDecl)) {
// It is an error if the TypeDecl of a DiamondAccess is not
// a generic type, but this error is handled in typeCheck.
return accessType;
}
SimpleSet maxSpecific = chooseConstructor();
if (maxSpecific.isEmpty()) {
return getTypeAccess().type();
}
MethodDecl constructor = maxSpecific.iterator().next();
return constructor.type();
}
/**
* @attribute syn
* @aspect Diamond
* @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:99
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="Diamond", declaredAt="/home/jesper/git/extendj/java7/frontend/Diamond.jrag:99")
public boolean isDiamond() {
boolean isDiamond_value = true;
return isDiamond_value;
}
/**
* Checks if this diamond access is legal.
*
* The diamond access is not legal if it either is part of an inner class
* declaration, if it is used to access a non-generic type, or if it is
* part of a call to a generic constructor with explicit type arguments.
* @attribute syn
* @aspect Diamond
* @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:318
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="Diamond", declaredAt="/home/jesper/git/extendj/java7/frontend/Diamond.jrag:318")
public Collection typeProblems() {
{
Collection problems = new LinkedList();
if (isAnonymousDecl()) {
problems.add(error("the diamond operator can not be used with anonymous classes"));
}
if (isExplicitGenericConstructorAccess()) {
problems.add(error("the diamond operator may not be used with generic "
+ "constructors with explicit type parameters"));
}
if (getClassInstanceExpr() == null) {
problems.add(error("the diamond operator can only be used in class instance expressions"));
}
if (!(getTypeAccess().type() instanceof ParClassDecl)) {
problems.add(error("the diamond operator can only be used to instantiate generic classes"));
}
return problems;
}
}
/**
* @return the nearest enclosing class instance expression, or {@code null}
* if there is no enclosing class instance expression.
* @attribute inh
* @aspect Diamond
* @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:106
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.INH)
@ASTNodeAnnotation.Source(aspect="Diamond", declaredAt="/home/jesper/git/extendj/java7/frontend/Diamond.jrag:106")
public ClassInstanceExpr getClassInstanceExpr() {
ClassInstanceExpr getClassInstanceExpr_value = getParent().Define_getClassInstanceExpr(this, null);
return getClassInstanceExpr_value;
}
/**
* @return true if this access is part of an anonymous class declaration
* @attribute inh
* @aspect Diamond
* @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:287
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.INH)
@ASTNodeAnnotation.Source(aspect="Diamond", declaredAt="/home/jesper/git/extendj/java7/frontend/Diamond.jrag:287")
public boolean isAnonymousDecl() {
boolean isAnonymousDecl_value = getParent().Define_isAnonymousDecl(this, null);
return isAnonymousDecl_value;
}
/**
* @return true if the Access is part of a generic constructor invocation
* with explicit type arguments
* @attribute inh
* @aspect Diamond
* @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:303
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.INH)
@ASTNodeAnnotation.Source(aspect="Diamond", declaredAt="/home/jesper/git/extendj/java7/frontend/Diamond.jrag:303")
public boolean isExplicitGenericConstructorAccess() {
boolean isExplicitGenericConstructorAccess_value = getParent().Define_isExplicitGenericConstructorAccess(this, null);
return isExplicitGenericConstructorAccess_value;
}
/**
* @declaredat /home/jesper/git/extendj/java5/frontend/GenericMethods.jrag:231
* @apilevel internal
*/
public SimpleSet Define_lookupType(ASTNode _callerNode, ASTNode _childNode, String name) {
if (_callerNode == methodAccess_value) {
// @declaredat /home/jesper/git/extendj/java7/frontend/Diamond.jrag:61
return unqualifiedScope().lookupType(name);
}
else {
return getParent().Define_lookupType(this, _callerNode, name);
}
}
/**
* @declaredat /home/jesper/git/extendj/java5/frontend/GenericMethods.jrag:231
* @apilevel internal
* @return {@code true} if this node has an equation for the inherited attribute lookupType
*/
protected boolean canDefine_lookupType(ASTNode _callerNode, ASTNode _childNode, String name) {
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/java7/frontend/Diamond.jrag:309
{
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);
for (Problem value : typeProblems()) {
collection.add(value);
}
}
}