1 /*******************************************************************************
2 * Copyright (c) 2000, 2003 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Common Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/cpl-v10.html
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
11 package net.sourceforge.phpdt.internal.compiler.ast;
13 import net.sourceforge.phpdt.core.compiler.CharOperation;
14 import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
15 import net.sourceforge.phpdt.internal.compiler.CompilationResult;
16 import net.sourceforge.phpdt.internal.compiler.flow.ExceptionHandlingFlowContext;
17 import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
18 import net.sourceforge.phpdt.internal.compiler.flow.InitializationFlowContext;
19 import net.sourceforge.phpdt.internal.compiler.lookup.ClassScope;
20 import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
21 import net.sourceforge.phpdt.internal.compiler.parser.UnitParser;
22 import net.sourceforge.phpdt.internal.compiler.problem.AbortMethod;
24 public class MethodDeclaration extends AbstractMethodDeclaration {
26 public TypeReference returnType;
27 public static final int FUNCTION_DEFINITION = 1;
28 public static final int METHOD_DEFINITION = 2;
32 * MethodDeclaration constructor comment.
34 public MethodDeclaration(CompilationResult compilationResult) {
35 super(compilationResult);
38 public void analyseCode(ClassScope classScope, InitializationFlowContext initializationContext, FlowInfo flowInfo) {
40 // starting of the code analysis for methods
41 if (ignoreFurtherInvestigation)
47 if (this.binding.isPrivate() && !this.binding.isPrivateUsed()) {
48 if (!classScope.referenceCompilationUnit().compilationResult.hasSyntaxError()) {
49 scope.problemReporter().unusedPrivateMethod(this);
53 // may be in a non necessary <clinit> for innerclass with static final constant fields
54 if (binding.isAbstract()) // || binding.isNative())
57 ExceptionHandlingFlowContext methodContext =
58 new ExceptionHandlingFlowContext(initializationContext, this, binding.thrownExceptions, scope, FlowInfo.DEAD_END);
60 // propagate to statements
61 if (statements != null) {
62 boolean didAlreadyComplain = false;
63 for (int i = 0, count = statements.length; i < count; i++) {
65 if (!flowInfo.complainIfUnreachable((stat = statements[i]), scope, didAlreadyComplain)) {
66 flowInfo = stat.analyseCode(scope, methodContext, flowInfo);
68 didAlreadyComplain = true;
72 // check for missing returning path
73 TypeBinding returnType = binding.returnType;
74 if ((returnType == VoidBinding) || isAbstract()) {
75 this.needFreeReturn = flowInfo.isReachable();
77 if (flowInfo != FlowInfo.DEAD_END) {
78 scope.problemReporter().shouldReturn(returnType, this);
81 } catch (AbortMethod e) {
82 this.ignoreFurtherInvestigation = true;
86 public void parseStatements(UnitParser parser, CompilationUnitDeclaration unit) {
88 //fill up the method body with statement
89 if (ignoreFurtherInvestigation)
91 parser.parse(this, unit);
94 public void resolveStatements() {
96 // ========= abort on fatal error =============
97 if (this.returnType != null && this.binding != null) {
98 this.returnType.resolvedType = this.binding.returnType;
99 // record the return type binding
101 // look if the name of the method is correct
102 if (binding != null && isTypeUseDeprecated(binding.returnType, scope))
103 scope.problemReporter().deprecatedType(binding.returnType, returnType);
106 if (CharOperation.equals(scope.enclosingSourceType().sourceName, selector))
107 scope.problemReporter().methodWithConstructorName(this);
109 // by grammatical construction, interface methods are always abstract
110 if (!scope.enclosingSourceType().isInterface()) {
112 // if a method has an semicolon body and is not declared as abstract==>error
113 // native methods may have a semicolon body
114 // if ((modifiers & AccSemicolonBody) != 0) {
115 // if ((modifiers & AccNative) == 0)
116 // if ((modifiers & AccAbstract) == 0)
117 // scope.problemReporter().methodNeedingAbstractModifier(this);
119 // // the method HAS a body --> abstract native modifiers are forbiden
120 // if (((modifiers & AccNative) != 0) || ((modifiers & AccAbstract) != 0))
121 // scope.problemReporter().methodNeedingNoBody(this);
125 super.resolveStatements();
128 public String returnTypeToString(int tab) {
130 if (returnType == null)
131 return ""; //$NON-NLS-1$
132 return returnType.toString(tab) + " "; //$NON-NLS-1$
135 public void traverse(ASTVisitor visitor, ClassScope classScope) {
137 if (visitor.visit(this, classScope)) {
138 if (returnType != null)
139 returnType.traverse(visitor, scope);
140 if (arguments != null) {
141 int argumentLength = arguments.length;
142 for (int i = 0; i < argumentLength; i++)
143 arguments[i].traverse(visitor, scope);
145 if (thrownExceptions != null) {
146 int thrownExceptionsLength = thrownExceptions.length;
147 for (int i = 0; i < thrownExceptionsLength; i++)
148 thrownExceptions[i].traverse(visitor, scope);
150 if (statements != null) {
151 int statementsLength = statements.length;
152 for (int i = 0; i < statementsLength; i++)
153 statements[i].traverse(visitor, scope);
156 visitor.endVisit(this, classScope);