/*******************************************************************************
* Copyright (c) 2000, 2011 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
*******************************************************************************/
package org.eclipse.wst.jsdt.internal.compiler.ast;
import org.eclipse.wst.jsdt.core.ast.IASTNode;
import org.eclipse.wst.jsdt.core.ast.IArrayAllocationExpression;
import org.eclipse.wst.jsdt.internal.compiler.ASTVisitor;
import org.eclipse.wst.jsdt.internal.compiler.flow.FlowContext;
import org.eclipse.wst.jsdt.internal.compiler.flow.FlowInfo;
import org.eclipse.wst.jsdt.internal.compiler.impl.Constant;
import org.eclipse.wst.jsdt.internal.compiler.lookup.ArrayBinding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.BlockScope;
import org.eclipse.wst.jsdt.internal.compiler.lookup.TypeBinding;
public class ArrayAllocationExpression extends Expression implements IArrayAllocationExpression {
public TypeReference type;
//dimensions.length gives the number of dimensions, but the
// last ones may be nulled as in new int[4][5][][]
public Expression[] dimensions;
public ArrayInitializer initializer;
public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
for (int i = 0, max = this.dimensions.length; i < max; i++) {
Expression dim;
if ((dim = this.dimensions[i]) != null) {
flowInfo = dim.analyseCode(currentScope, flowContext, flowInfo);
}
}
if (this.initializer != null) {
return this.initializer.analyseCode(currentScope, flowContext, flowInfo);
}
return flowInfo;
}
public StringBuffer printExpression(int indent, StringBuffer output) {
output.append("new "); //$NON-NLS-1$
this.type.print(0, output);
for (int i = 0; i < this.dimensions.length; i++) {
if (this.dimensions[i] == null)
output.append("[]"); //$NON-NLS-1$
else {
output.append('[');
this.dimensions[i].printExpression(0, output);
output.append(']');
}
}
if (this.initializer != null) this.initializer.printExpression(0, output);
return output;
}
public TypeBinding resolveType(BlockScope scope) {
// Build an array type reference using the current dimensions
// The parser does not check for the fact that dimension may be null
// only at the -end- like new int [4][][]. The parser allows new int[][4][]
// so this must be checked here......(this comes from a reduction to LL1 grammar)
TypeBinding referenceType = this.type.resolveType(scope, true /* check bounds*/);
// will check for null after dimensions are checked
this.constant = Constant.NotAConstant;
// check the validity of the dimension syntax (and test for all null dimensions)
int explicitDimIndex = -1;
loop: for (int i = this.dimensions.length; --i >= 0;) {
if (this.dimensions[i] != null) {
if (explicitDimIndex < 0) explicitDimIndex = i;
} else if (explicitDimIndex > 0) {
break loop;
}
}
// dimensions resolution
for (int i = 0; i <= explicitDimIndex; i++) {
Expression dimExpression;
if ((dimExpression = this.dimensions[i]) != null) {
TypeBinding dimensionType = dimExpression.resolveTypeExpecting(scope, TypeBinding.INT);
}
}
// building the array binding
if (referenceType != null) {
this.resolvedType = scope.createArrayType(referenceType, this.dimensions.length);
// check the initializer
if (this.initializer != null) {
if ((this.initializer.resolveTypeExpecting(scope, this.resolvedType)) != null)
this.initializer.binding = (ArrayBinding)this.resolvedType;
}
}
return this.resolvedType;
}
public void traverse(ASTVisitor visitor, BlockScope scope) {
if (visitor.visit(this, scope)) {
int dimensionsLength = this.dimensions.length;
this.type.traverse(visitor, scope);
for (int i = 0; i < dimensionsLength; i++) {
if (this.dimensions[i] != null)
this.dimensions[i].traverse(visitor, scope);
}
if (this.initializer != null)
this.initializer.traverse(visitor, scope);
}
visitor.endVisit(this, scope);
}
public int getASTType() {
return IASTNode.ARRAY_ALLOCATION_EXPRESSION;
}
}