+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v0.5
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v05.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- ******************************************************************************/
-package net.sourceforge.phpdt.internal.compiler.ast;
-
-import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
-import net.sourceforge.phpdt.internal.compiler.codegen.CodeStream;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
-import net.sourceforge.phpdt.internal.compiler.impl.NullConstant;
-import net.sourceforge.phpdt.internal.compiler.lookup.ArrayBinding;
-import net.sourceforge.phpdt.internal.compiler.lookup.BaseTypeBinding;
-import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
-import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
-
-public class ArrayInitializer extends Expression {
- public Expression[] expressions;
- public ArrayBinding binding; //the type of the { , , , }
-
-/**
- * ArrayInitializer constructor comment.
- */
-public ArrayInitializer() {
- super();
-}
-public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
- if (expressions != null) {
- for (int i = 0, max = expressions.length; i < max; i++) {
- flowInfo = expressions[i].analyseCode(currentScope, flowContext, flowInfo).unconditionalInits();
- }
- }
- return flowInfo;
-}
-/**
- * Code generation for a array initializer
- */
-public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
- // Flatten the values and compute the dimensions, by iterating in depth into nested array initializers
-
- int pc = codeStream.position;
- int expressionLength = (expressions == null) ? 0: expressions.length;
- codeStream.generateInlinedValue(expressionLength);
- codeStream.newArray(currentScope, binding);
- if (expressions != null) {
- // binding is an ArrayType, so I can just deal with the dimension
- int elementsTypeID = binding.dimensions > 1 ? -1 : binding.leafComponentType.id;
- for (int i = 0; i < expressionLength; i++) {
- Expression expr;
- if ((expr = expressions[i]).constant != NotAConstant) {
- switch (elementsTypeID) { // filter out initializations to default values
- case T_int :
- case T_short :
- case T_byte :
- case T_char :
- case T_float :
- case T_long :
- case T_double :
- if (expr.constant.doubleValue() != 0) {
- codeStream.dup();
- codeStream.generateInlinedValue(i);
- expr.generateCode(currentScope, codeStream, true);
- codeStream.arrayAtPut(elementsTypeID, false);
- }
- break;
- case T_boolean :
- if (expr.constant.booleanValue() != false) {
- codeStream.dup();
- codeStream.generateInlinedValue(i);
- expr.generateCode(currentScope, codeStream, true);
- codeStream.arrayAtPut(elementsTypeID, false);
- }
- break;
- default :
- if (expr.constant != NullConstant.Default) {
- codeStream.dup();
- codeStream.generateInlinedValue(i);
- expr.generateCode(currentScope, codeStream, true);
- codeStream.arrayAtPut(elementsTypeID, false);
- }
- }
- } else {
- codeStream.dup();
- codeStream.generateInlinedValue(i);
- expr.generateCode(currentScope, codeStream, true);
- codeStream.arrayAtPut(elementsTypeID, false);
- }
- }
- }
- if (!valueRequired) {
- codeStream.pop();
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
-}
-public TypeBinding resolveTypeExpecting(BlockScope scope, TypeBinding expectedTb) {
- // Array initializers can only occur on the right hand side of an assignment
- // expression, therefore the expected type contains the valid information
- // concerning the type that must be enforced by the elements of the array initializer.
-
- // this method is recursive... (the test on isArrayType is the stop case)
-
- constant = NotAConstant;
- if (expectedTb.isArrayType()) {
- binding = (ArrayBinding) expectedTb;
- if (expressions == null)
- return binding;
- TypeBinding expectedElementsTb = binding.elementsType(scope);
- if (expectedElementsTb.isBaseType()) {
- for (int i = 0, length = expressions.length; i < length; i++) {
- Expression expression = expressions[i];
- TypeBinding expressionTb =
- (expression instanceof ArrayInitializer)
- ? expression.resolveTypeExpecting(scope, expectedElementsTb)
- : expression.resolveType(scope);
- if (expressionTb == null)
- return null;
-
- // Compile-time conversion required?
- if (expression.isConstantValueOfTypeAssignableToType(expressionTb, expectedElementsTb)) {
- expression.implicitWidening(expectedElementsTb, expressionTb);
- } else if (BaseTypeBinding.isWidening(expectedElementsTb.id, expressionTb.id)) {
- expression.implicitWidening(expectedElementsTb, expressionTb);
- } else {
- scope.problemReporter().typeMismatchErrorActualTypeExpectedType(expression, expressionTb, expectedElementsTb);
- return null;
- }
- }
- } else {
- for (int i = 0, length = expressions.length; i < length; i++)
- if (expressions[i].resolveTypeExpecting(scope, expectedElementsTb) == null)
- return null;
- }
- return binding;
- }
-
- // infer initializer type for error reporting based on first element
- TypeBinding leafElementType = null;
- int dim = 1;
- if (expressions == null) {
- leafElementType = scope.getJavaLangObject();
- } else {
- Expression currentExpression = expressions[0];
- while(currentExpression != null && currentExpression instanceof ArrayInitializer) {
- dim++;
- Expression[] subExprs = ((ArrayInitializer) currentExpression).expressions;
- if (subExprs == null){
- leafElementType = scope.getJavaLangObject();
- currentExpression = null;
- break;
- }
- currentExpression = ((ArrayInitializer) currentExpression).expressions[0];
- }
- if (currentExpression != null) {
- leafElementType = currentExpression.resolveType(scope);
- }
- }
- if (leafElementType != null) {
- TypeBinding probableTb = scope.createArray(leafElementType, dim);
- scope.problemReporter().typeMismatchErrorActualTypeExpectedType(this, probableTb, expectedTb);
- }
- return null;
-}
-public String toStringExpression() {
-
- String s = "{" ; //$NON-NLS-1$
- if (expressions != null)
- { int j = 20 ;
- for (int i = 0 ; i < expressions.length ; i++)
- { s = s + expressions[i].toStringExpression() + "," ; //$NON-NLS-1$
- j -- ;
- if (j == 0)
- { s = s + "\n "; j = 20;}}}; //$NON-NLS-1$
- s = s + "}"; //$NON-NLS-1$
- return s;}
-
-public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
- if (visitor.visit(this, scope)) {
- if (expressions != null) {
- int expressionsLength = expressions.length;
- for (int i = 0; i < expressionsLength; i++)
- expressions[i].traverse(visitor, scope);
- }
- }
- visitor.endVisit(this, scope);
-}
-}
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