/*******************************************************************************
* Copyright (c) 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Zend Technologies
*******************************************************************************/
package org2.eclipse.php.internal.core.ast.nodes;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org2.eclipse.php.internal.core.PHPVersion;
import org2.eclipse.php.internal.core.ast.match.ASTMatcher;
import org2.eclipse.php.internal.core.ast.visitor.Visitor;
/**
* Represents a block of statements
* <pre>e.g.<pre>
* {
* statement1;
* statement2;
* },
* :
* statement1;
* statement2;
* ,
*/
@SuppressWarnings({"unchecked", "rawtypes"})
public class Block extends Statement {
private final ASTNode.NodeList<Statement> statements = new ASTNode.NodeList<Statement>(STATEMENTS_PROPERTY);
private boolean isCurly;
/**
* The "statements" structural property of this node type.
*/
public static final ChildListPropertyDescriptor STATEMENTS_PROPERTY =
new ChildListPropertyDescriptor(Block.class, "statements", Statement.class, CYCLE_RISK); //$NON-NLS-1$
public static final SimplePropertyDescriptor IS_CURLY_PROPERTY =
new SimplePropertyDescriptor(Block.class, "isCurly", Boolean.class, OPTIONAL); //$NON-NLS-1$
/**
* A list of property descriptors (element type:
* {@link StructuralPropertyDescriptor}),
* or null if uninitialized.
*/
private static final List<StructuralPropertyDescriptor> PROPERTY_DESCRIPTORS;
static {
List<StructuralPropertyDescriptor> properyList = new ArrayList<StructuralPropertyDescriptor>(2);
properyList.add(STATEMENTS_PROPERTY);
properyList.add(IS_CURLY_PROPERTY);
PROPERTY_DESCRIPTORS = Collections.unmodifiableList(properyList);
}
private Block(int start, int end, AST ast, Statement[] statements, boolean isCurly) {
super(start, end, ast);
if (statements == null) {
throw new IllegalArgumentException();
}
setIsCurly(isCurly);
// set the child nodes' parent
for (int i = 0; i < statements.length; i++) {
this.statements.add(statements[i]);
}
}
public Block(int start, int end, AST ast, List statements, boolean isCurly) {
this(start, end, ast, statements == null ? null : (Statement[]) statements.toArray(new Statement[statements.size()]), isCurly);
}
public Block(int start, int end, AST ast, List statements) {
this(start, end, ast, statements, true);
}
public Block(AST ast) {
super(ast);
}
public void accept0(Visitor visitor) {
final boolean visit = visitor.visit(this);
if (visit) {
childrenAccept(visitor);
}
visitor.endVisit(this);
}
public void childrenAccept(Visitor visitor) {
for (ASTNode statement : statements) {
statement.accept(visitor);
}
}
public void traverseTopDown(Visitor visitor) {
accept(visitor);
for (ASTNode statement : statements) {
statement.traverseTopDown(visitor);
}
}
public void traverseBottomUp(Visitor visitor) {
for (ASTNode statement : statements) {
statement.traverseBottomUp(visitor);
}
accept(visitor);
}
public void toString(StringBuffer buffer, String tab) {
buffer.append(tab).append("<Block"); //$NON-NLS-1$
appendInterval(buffer);
buffer.append(" isCurly='").append(isCurly).append("'>\n"); //$NON-NLS-1$ //$NON-NLS-2$
for (ASTNode statement : statements) {
statement.toString(buffer, TAB + tab);
buffer.append("\n"); //$NON-NLS-1$
}
buffer.append(tab).append("</Block>"); //$NON-NLS-1$
}
public int getType() {
return ASTNode.BLOCK;
}
public boolean isCurly() {
return isCurly;
}
/**
* is this a curly block or an old (ie - : endblock) style
*
* @param isCurly the assignment operator
* @exception IllegalArgumentException if the argument is incorrect
*/
public void setIsCurly(boolean isCurly) {
preValueChange(IS_CURLY_PROPERTY);
this.isCurly = isCurly;
postValueChange(IS_CURLY_PROPERTY);
}
/**
* @deprecated use {@link #statements()}
*/
public Statement[] getStatements() {
return (Statement[]) statements.toArray(new Statement[statements.size()]);
}
/**
* Retrieves the statement parts of this block
* @return statement parts of this block
*/
public List<Statement> statements() {
return this.statements;
}
/*
* Method declared on ASTNode.
*/
public boolean subtreeMatch(ASTMatcher matcher, Object other) {
// dispatch to correct overloaded match method
return matcher.match(this, other);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
ASTNode clone0(AST target) {
final List statements = ASTNode.copySubtrees(target, statements());
final Block result = new Block(this.getStart(), this.getEnd(), target, statements, this.isCurly());
return result;
}
@Override
List<StructuralPropertyDescriptor> internalStructuralPropertiesForType(PHPVersion apiLevel) {
return PROPERTY_DESCRIPTORS;
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final List internalGetChildListProperty(ChildListPropertyDescriptor property) {
if (property == STATEMENTS_PROPERTY) {
return statements();
}
// allow default implementation to flag the error
return super.internalGetChildListProperty(property);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final boolean internalGetSetBooleanProperty(SimplePropertyDescriptor property, boolean get, boolean value) {
if (property == IS_CURLY_PROPERTY) {
if (get) {
return isCurly();
} else {
setIsCurly(value);
return false;
}
}
// allow default implementation to flag the error
return super.internalGetSetBooleanProperty(property, get, value);
}
}