+/*******************************************************************************
+ * Copyright (c) 2000, 2003 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 net.sourceforge.phpdt.internal.compiler.ast;
-/**
- * A Method declaration.
- * @author Matthieu Casanova
- */
-public class MethodDeclaration extends Statement {
-
- public char[] name;
- public ArgumentDeclaration[] arguments;
- public Statement[] statements;
- public int bodyStart;
- public int bodyEnd = -1;
- public boolean isConstructor;
-
- /**
- * Return method into String, with a number of tabs
- * @param tab the number of tabs
- * @return the String containing the method
- */
- public String toString(int tab) {
- String s = tabString(tab);
- StringBuffer buff = new StringBuffer(s);
- buff.append(name).append("(");//$NON-NLS-1$
-
- if (arguments != null) {
- for (int i = 0; i < arguments.length; i++) {
- buff.append(arguments[i].toString(0));
- if (i != (arguments.length - 1)) {
- buff.append(", "); //$NON-NLS-1$
- }
- }
- }
- buff.append(")"); //$NON-NLS-1$
-
- s += toStringStatements(tab + 1);
- return s;
- }
-
- /**
- * Return the statements of the method into Strings
- * @param tab the number of tabs
- * @return the String containing the statements
- */
- public String toStringStatements(int tab) {
- StringBuffer buff = new StringBuffer(" {"); //$NON-NLS-1$
- if (statements != null) {
- for (int i = 0; i < statements.length; i++) {
- buff.append("\n").append(statements[i].toString(tab)); //$NON-NLS-1$
- if (!(statements[i] instanceof Block)) {
- buff.append(";"); //$NON-NLS-1$
- }
- }
- }
- buff.append("\n").append(tabString(tab == 0 ? 0 : tab - 1)).append("}"); //$NON-NLS-2$ //$NON-NLS-1$
- return buff.toString();
- }
+import net.sourceforge.phpdt.core.compiler.CharOperation;
+import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
+import net.sourceforge.phpdt.internal.compiler.CompilationResult;
+import net.sourceforge.phpdt.internal.compiler.flow.ExceptionHandlingFlowContext;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
+import net.sourceforge.phpdt.internal.compiler.flow.InitializationFlowContext;
+import net.sourceforge.phpdt.internal.compiler.lookup.ClassScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
+import net.sourceforge.phpdt.internal.compiler.parser.UnitParser;
+import net.sourceforge.phpdt.internal.compiler.problem.AbortMethod;
+
+public class MethodDeclaration extends AbstractMethodDeclaration {
+
+ public TypeReference returnType;
+
+ public static final int FUNCTION_DEFINITION = 1;
+
+ public static final int METHOD_DEFINITION = 2;
+
+ public int type;
+
+ /**
+ * MethodDeclaration constructor comment.
+ */
+ public MethodDeclaration(CompilationResult compilationResult) {
+ super(compilationResult);
+ }
+
+ public void analyseCode(ClassScope classScope,
+ InitializationFlowContext initializationContext, FlowInfo flowInfo) {
+
+ // starting of the code analysis for methods
+ if (ignoreFurtherInvestigation)
+ return;
+ try {
+ if (binding == null)
+ return;
+
+ if (this.binding.isPrivate() && !this.binding.isPrivateUsed()) {
+ if (!classScope.referenceCompilationUnit().compilationResult
+ .hasSyntaxError()) {
+ scope.problemReporter().unusedPrivateMethod(this);
+ }
+ }
+
+ // may be in a non necessary <clinit> for innerclass with static
+ // final constant fields
+ if (binding.isAbstract()) // || binding.isNative())
+ return;
+
+ ExceptionHandlingFlowContext methodContext = new ExceptionHandlingFlowContext(
+ initializationContext, this, binding.thrownExceptions,
+ scope, FlowInfo.DEAD_END);
+
+ // propagate to statements
+ if (statements != null) {
+ boolean didAlreadyComplain = false;
+ for (int i = 0, count = statements.length; i < count; i++) {
+ Statement stat;
+ if (!flowInfo.complainIfUnreachable((stat = statements[i]),
+ scope, didAlreadyComplain)) {
+ flowInfo = stat.analyseCode(scope, methodContext,
+ flowInfo);
+ } else {
+ didAlreadyComplain = true;
+ }
+ }
+ }
+ // check for missing returning path
+ TypeBinding returnType = binding.returnType;
+ if ((returnType == VoidBinding) || isAbstract()) {
+ this.needFreeReturn = flowInfo.isReachable();
+ } else {
+ if (flowInfo != FlowInfo.DEAD_END) {
+ scope.problemReporter().shouldReturn(returnType, this);
+ }
+ }
+ } catch (AbortMethod e) {
+ this.ignoreFurtherInvestigation = true;
+ }
+ }
+
+ public void parseStatements(UnitParser parser,
+ CompilationUnitDeclaration unit) {
+
+ // fill up the method body with statement
+ if (ignoreFurtherInvestigation)
+ return;
+ parser.parse(this, unit);
+ }
+
+ public void resolveStatements() {
+
+ // ========= abort on fatal error =============
+ if (this.returnType != null && this.binding != null) {
+ this.returnType.resolvedType = this.binding.returnType;
+ // record the return type binding
+ }
+ // look if the name of the method is correct
+ if (binding != null && isTypeUseDeprecated(binding.returnType, scope))
+ scope.problemReporter().deprecatedType(binding.returnType,
+ returnType);
+
+ if (scope != null) {
+ if (CharOperation.equals(scope.enclosingSourceType().sourceName,
+ selector))
+ scope.problemReporter().methodWithConstructorName(this);
+
+ // by grammatical construction, interface methods are always
+ // abstract
+ if (!scope.enclosingSourceType().isInterface()) {
+
+ // if a method has an semicolon body and is not declared as
+ // abstract==>error
+ // native methods may have a semicolon body
+ // if ((modifiers & AccSemicolonBody) != 0) {
+ // if ((modifiers & AccNative) == 0)
+ // if ((modifiers & AccAbstract) == 0)
+ // scope.problemReporter().methodNeedingAbstractModifier(this);
+ // } else {
+ // // the method HAS a body --> abstract native modifiers are
+ // forbiden
+ // if (((modifiers & AccNative) != 0) || ((modifiers &
+ // AccAbstract) != 0))
+ // scope.problemReporter().methodNeedingNoBody(this);
+ // }
+ }
+ }
+ super.resolveStatements();
+ }
+
+ public String returnTypeToString(int tab) {
+
+ if (returnType == null)
+ return ""; //$NON-NLS-1$
+ return returnType.toString(tab) + " "; //$NON-NLS-1$
+ }
+
+ public void traverse(ASTVisitor visitor, ClassScope classScope) {
+
+ if (visitor.visit(this, classScope)) {
+ if (returnType != null)
+ returnType.traverse(visitor, scope);
+ if (arguments != null) {
+ int argumentLength = arguments.length;
+ for (int i = 0; i < argumentLength; i++)
+ arguments[i].traverse(visitor, scope);
+ }
+ if (thrownExceptions != null) {
+ int thrownExceptionsLength = thrownExceptions.length;
+ for (int i = 0; i < thrownExceptionsLength; i++)
+ thrownExceptions[i].traverse(visitor, scope);
+ }
+ if (statements != null) {
+ int statementsLength = statements.length;
+ for (int i = 0; i < statementsLength; i++)
+ statements[i].traverse(visitor, scope);
+ }
+ }
+ visitor.endVisit(this, classScope);
+ }
}
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