+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2004 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.jdt.internal.compiler.ast;
-
-import org.eclipse.jdt.internal.compiler.ASTVisitor;
-import org.eclipse.jdt.internal.compiler.impl.*;
-import org.eclipse.jdt.internal.compiler.codegen.*;
-import org.eclipse.jdt.internal.compiler.flow.*;
-import org.eclipse.jdt.internal.compiler.lookup.*;
-
-public class ArrayReference extends Reference {
-
- public Expression receiver;
- public Expression position;
-
- public ArrayReference(Expression rec, Expression pos) {
- this.receiver = rec;
- this.position = pos;
- sourceStart = rec.sourceStart;
- }
-
- public FlowInfo analyseAssignment(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo,
- Assignment assignment,
- boolean compoundAssignment) {
-
- if (assignment.expression == null) {
- return analyseCode(currentScope, flowContext, flowInfo).unconditionalInits();
- }
- return assignment
- .expression
- .analyseCode(
- currentScope,
- flowContext,
- analyseCode(currentScope, flowContext, flowInfo).unconditionalInits())
- .unconditionalInits();
- }
-
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
-
- return position.analyseCode(
- currentScope,
- flowContext,
- receiver.analyseCode(currentScope, flowContext, flowInfo));
- }
-
- public void generateAssignment(
- BlockScope currentScope,
- CodeStream codeStream,
- Assignment assignment,
- boolean valueRequired) {
-
- receiver.generateCode(currentScope, codeStream, true);
- if (receiver instanceof CastExpression // ((type[])null)[0]
- && ((CastExpression)receiver).innermostCastedExpression().resolvedType == NullBinding){
- codeStream.checkcast(receiver.resolvedType);
- }
- position.generateCode(currentScope, codeStream, true);
- assignment.expression.generateCode(currentScope, codeStream, true);
- codeStream.arrayAtPut(this.resolvedType.id, valueRequired);
- if (valueRequired) {
- codeStream.generateImplicitConversion(assignment.implicitConversion);
- }
- }
-
- /**
- * Code generation for a array reference
- */
- public void generateCode(
- BlockScope currentScope,
- CodeStream codeStream,
- boolean valueRequired) {
-
- int pc = codeStream.position;
- receiver.generateCode(currentScope, codeStream, true);
- if (receiver instanceof CastExpression // ((type[])null)[0]
- && ((CastExpression)receiver).innermostCastedExpression().resolvedType == NullBinding){
- codeStream.checkcast(receiver.resolvedType);
- }
- position.generateCode(currentScope, codeStream, true);
- codeStream.arrayAt(this.resolvedType.id);
- // Generating code for the potential runtime type checking
- if (valueRequired) {
- codeStream.generateImplicitConversion(implicitConversion);
- } else {
- if (this.resolvedType == LongBinding
- || this.resolvedType == DoubleBinding) {
- codeStream.pop2();
- } else {
- codeStream.pop();
- }
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
- }
-
- public void generateCompoundAssignment(
- BlockScope currentScope,
- CodeStream codeStream,
- Expression expression,
- int operator,
- int assignmentImplicitConversion,
- boolean valueRequired) {
-
- receiver.generateCode(currentScope, codeStream, true);
- if (receiver instanceof CastExpression // ((type[])null)[0]
- && ((CastExpression)receiver).innermostCastedExpression().resolvedType == NullBinding){
- codeStream.checkcast(receiver.resolvedType);
- }
- position.generateCode(currentScope, codeStream, true);
- codeStream.dup2();
- codeStream.arrayAt(this.resolvedType.id);
- int operationTypeID;
- if ((operationTypeID = implicitConversion >> 4) == T_String) {
- codeStream.generateStringAppend(currentScope, null, expression);
- } else {
- // promote the array reference to the suitable operation type
- codeStream.generateImplicitConversion(implicitConversion);
- // generate the increment value (will by itself be promoted to the operation value)
- if (expression == IntLiteral.One) { // prefix operation
- codeStream.generateConstant(expression.constant, implicitConversion);
- } else {
- expression.generateCode(currentScope, codeStream, true);
- }
- // perform the operation
- codeStream.sendOperator(operator, operationTypeID);
- // cast the value back to the array reference type
- codeStream.generateImplicitConversion(assignmentImplicitConversion);
- }
- codeStream.arrayAtPut(this.resolvedType.id, valueRequired);
- }
-
- public void generatePostIncrement(
- BlockScope currentScope,
- CodeStream codeStream,
- CompoundAssignment postIncrement,
- boolean valueRequired) {
-
- receiver.generateCode(currentScope, codeStream, true);
- if (receiver instanceof CastExpression // ((type[])null)[0]
- && ((CastExpression)receiver).innermostCastedExpression().resolvedType == NullBinding){
- codeStream.checkcast(receiver.resolvedType);
- }
- position.generateCode(currentScope, codeStream, true);
- codeStream.dup2();
- codeStream.arrayAt(this.resolvedType.id);
- if (valueRequired) {
- if ((this.resolvedType == LongBinding)
- || (this.resolvedType == DoubleBinding)) {
- codeStream.dup2_x2();
- } else {
- codeStream.dup_x2();
- }
- }
- codeStream.generateConstant(
- postIncrement.expression.constant,
- implicitConversion);
- codeStream.sendOperator(postIncrement.operator, this.resolvedType.id);
- codeStream.generateImplicitConversion(
- postIncrement.assignmentImplicitConversion);
- codeStream.arrayAtPut(this.resolvedType.id, false);
- }
-
- public StringBuffer printExpression(int indent, StringBuffer output) {
-
- receiver.printExpression(0, output).append('[');
- return position.printExpression(0, output).append(']');
- }
-
- public TypeBinding resolveType(BlockScope scope) {
-
- constant = Constant.NotAConstant;
- if (receiver instanceof CastExpression // no cast check for ((type[])null)[0]
- && ((CastExpression)receiver).innermostCastedExpression() instanceof NullLiteral) {
- this.receiver.bits |= IgnoreNeedForCastCheckMASK; // will check later on
- }
- TypeBinding arrayType = receiver.resolveType(scope);
- if (arrayType != null) {
- if (arrayType.isArrayType()) {
- this.resolvedType = ((ArrayBinding) arrayType).elementsType(scope);
- } else {
- scope.problemReporter().referenceMustBeArrayTypeAt(arrayType, this);
- }
- }
- TypeBinding positionType = position.resolveTypeExpecting(scope, IntBinding);
- if (positionType != null) {
- position.implicitWidening(IntBinding, positionType);
- }
- return this.resolvedType;
- }
-
- public void traverse(ASTVisitor visitor, BlockScope scope) {
-
- if (visitor.visit(this, scope)) {
- receiver.traverse(visitor, scope);
- position.traverse(visitor, scope);
- }
- visitor.endVisit(this, scope);
- }
-}
projects / org.ibex.tool.git / blobdiff