Attachment 56627 Details for Bug 163443 – Proposed patch

[patch] Proposed patch

163443.txt (text/plain), 7.22 KB, created by Philipe Mulet

on 2007-01-09 09:41:51 EST

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Creator: Philipe Mulet

Created: 2007-01-09 09:41:51 EST

Size: 7.22 KB

patch

obsolete

>### Eclipse Workspace Patch 1.0
>#P org.eclipse.jdt.core
>Index: compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java,v
>retrieving revision 1.335
>diff -u -r1.335 ProblemReporter.java
>--- compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	22 Dec 2006 16:02:08 -0000	1.335
>+++ compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	9 Jan 2007 14:33:59 -0000
>@@ -6344,9 +6344,6 @@
> }
> public void unusedPrivateConstructor(ConstructorDeclaration constructorDecl) {
> 	
>-	// no complaint for no-arg constructors (or default ones) - known pattern to block instantiation
>-	if (constructorDecl.arguments == null || constructorDecl.arguments.length == 0) return;
>-
> 	int severity = computeSeverity(IProblem.UnusedPrivateConstructor);
> 	if (severity == ProblemSeverities.Ignore) return;
> 					
>Index: compiler/org/eclipse/jdt/internal/compiler/ast/ConstructorDeclaration.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/ConstructorDeclaration.java,v
>retrieving revision 1.84
>diff -u -r1.84 ConstructorDeclaration.java
>--- compiler/org/eclipse/jdt/internal/compiler/ast/ConstructorDeclaration.java	14 Nov 2006 19:44:11 -0000	1.84
>+++ compiler/org/eclipse/jdt/internal/compiler/ast/ConstructorDeclaration.java	9 Jan 2007 14:33:56 -0000
>@@ -51,10 +51,19 @@
> 	int nonStaticFieldInfoReachMode = flowInfo.reachMode();
> 	flowInfo.setReachMode(initialReachMode);
> 	
>-	if (this.binding != null && !this.binding.isUsed() && (this.binding.isPrivate() || (this.binding.declaringClass.tagBits & (TagBits.IsAnonymousType|TagBits.IsLocalType)) == TagBits.IsLocalType)) {
>-		if (!classScope.referenceCompilationUnit().compilationResult.hasSyntaxError) {
>-			this.scope.problemReporter().unusedPrivateConstructor(this);
>+	checkUnused: {
>+		MethodBinding constructorBinding;
>+		if ((constructorBinding = this.binding) == null) break checkUnused;
>+		if (this.isDefaultConstructor) break checkUnused;
>+		if (constructorBinding.isUsed()) break checkUnused;
>+		if (constructorBinding.isPrivate()) {
>+			if ((this.binding.declaringClass.tagBits & TagBits.HasNonPrivateConstructor) == 0)
>+				break checkUnused; // tolerate as known pattern to block instantiation
>+		} else if ((this.binding.declaringClass.tagBits & (TagBits.IsAnonymousType|TagBits.IsLocalType)) != TagBits.IsLocalType) {
>+			break checkUnused;
> 		}
>+		// complain unused
>+		this.scope.problemReporter().unusedPrivateConstructor(this);
> 	}
> 		
> 	// check constructor recursion, once all constructor got resolved
>@@ -412,28 +421,31 @@
>  * for recursive constructor invocations.
>  */
> public void resolveStatements() {
>-	if (!CharOperation.equals(this.scope.enclosingSourceType().sourceName, this.selector)){
>+	SourceTypeBinding sourceType = this.scope.enclosingSourceType();
>+	if (!CharOperation.equals(sourceType.sourceName, this.selector)){
> 		this.scope.problemReporter().missingReturnType(this);
> 	}
>-
> 	if (this.typeParameters != null) {
> 		for (int i = 0, length = this.typeParameters.length; i < length; i++) {
> 			this.typeParameters[i].resolve(this.scope);
> 		}
> 	}
>-	
>-	// if null ==> an error has occurs at parsing time ....
>-	if (this.constructorCall != null) {
>-		// e.g. using super() in java.lang.Object
>-		if (this.binding != null
>-			&& this.binding.declaringClass.id == TypeIds.T_JavaLangObject
>-			&& this.constructorCall.accessMode != ExplicitConstructorCall.This) {
>-				if (this.constructorCall.accessMode == ExplicitConstructorCall.Super) {
>-					this.scope.problemReporter().cannotUseSuperInJavaLangObject(this.constructorCall);
>-				}
>-				this.constructorCall = null;
>-		} else {
>-			this.constructorCall.resolve(this.scope);
>+	if (this.binding != null) {
>+		if (!this.binding.isPrivate()) {
>+			sourceType.tagBits |= TagBits.HasNonPrivateConstructor;
>+		}
>+		// if null ==> an error has occurs at parsing time ....
>+		if (this.constructorCall != null) {
>+			// e.g. using super() in java.lang.Object
>+			if (sourceType.id == TypeIds.T_JavaLangObject
>+				&& this.constructorCall.accessMode != ExplicitConstructorCall.This) {
>+					if (this.constructorCall.accessMode == ExplicitConstructorCall.Super) {
>+						this.scope.problemReporter().cannotUseSuperInJavaLangObject(this.constructorCall);
>+					}
>+					this.constructorCall = null;
>+			} else {
>+				this.constructorCall.resolve(this.scope);
>+			}
> 		}
> 	}
> 	if ((this.modifiers & ExtraCompilerModifiers.AccSemicolonBody) != 0) {
>Index: compiler/org/eclipse/jdt/internal/compiler/lookup/TagBits.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/lookup/TagBits.java,v
>retrieving revision 1.28
>diff -u -r1.28 TagBits.java
>--- compiler/org/eclipse/jdt/internal/compiler/lookup/TagBits.java	23 Oct 2006 08:01:16 -0000	1.28
>+++ compiler/org/eclipse/jdt/internal/compiler/lookup/TagBits.java	9 Jan 2007 14:33:56 -0000
>@@ -106,4 +106,7 @@
> 	long AllStandardAnnotationsMask = AnnotationTargetMASK | AnnotationRetentionMASK | AnnotationDeprecated | AnnotationDocumented | AnnotationInherited |  AnnotationOverride | AnnotationSuppressWarnings;
> 	
> 	long DefaultValueResolved = ASTNode.Bit52L;
>+	
>+	// set when type contains non-private constructor(s)
>+	long HasNonPrivateConstructor = ASTNode.Bit53L;
> }
>#P org.eclipse.jdt.core.tests.compiler
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java,v
>retrieving revision 1.14
>diff -u -r1.14 ProblemConstructorTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java	29 Mar 2006 03:50:23 -0000	1.14
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java	9 Jan 2007 14:34:00 -0000
>@@ -98,4 +98,39 @@
> 		"This method requires a body instead of a semicolon\n" + 
> 		"----------\n");
> }
>+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=163443
>+public void test003() {
>+	this.runNegativeTest(
>+		new String[] {
>+			"Example.java",
>+			"class Example {\n" + 
>+			"  private Example() {\n" + 
>+			"  }\n" + 
>+			"  public Example(int i) {\n" + 
>+			"  }\n" + 
>+			"}\n" + 
>+			"class E1 {\n" + 
>+			"    private E1(int i) {}\n" + 
>+			"    private E1(long l) {}\n" + 
>+			"}\n" + 
>+			"class E2 {\n" + 
>+			"    private E2(int i) {}\n" + 
>+			"}\n" + 
>+			"class E3 {\n" + 
>+			"    public E3(int i) {}\n" + 
>+			"    Zork z;\n" + 
>+			"}\n"
>+		},
>+		"----------\n" + 
>+		"1. WARNING in Example.java (at line 2)\n" + 
>+		"	private Example() {\n" + 
>+		"	        ^^^^^^^^^\n" + 
>+		"The constructor Example() is never used locally\n" + 
>+		"----------\n" + 
>+		"2. ERROR in Example.java (at line 16)\n" + 
>+		"	Zork z;\n" + 
>+		"	^^^^\n" + 
>+		"Zork cannot be resolved to a type\n" + 
>+		"----------\n");
>+}
> }

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Attachments on bug 163443: 56627 | 56716