Initial upgrade to Platform/JDT 3.4.1

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / ClassLiteralAccess.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ClassLiteralAccess.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ClassLiteralAccess.java
new file mode 100644 (file)
index 0000000..5f7c5f6
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ClassLiteralAccess.java
@@ -0,0 +1,118 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.compiler.ast;
+
+import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
+import net.sourceforge.phpdt.internal.compiler.classfmt.ClassFileConstants;
+import net.sourceforge.phpdt.internal.compiler.codegen.*;
+import net.sourceforge.phpdt.internal.compiler.flow.*;
+import net.sourceforge.phpdt.internal.compiler.impl.Constant;
+import net.sourceforge.phpdt.internal.compiler.lookup.*;
+
+public class ClassLiteralAccess extends Expression {
+       
+       public TypeReference type;
+       public TypeBinding targetType;
+       FieldBinding syntheticField;
+
+       public ClassLiteralAccess(int sourceEnd, TypeReference type) {
+               this.type = type;
+               type.bits |= IgnoreRawTypeCheck; // no need to worry about raw type usage
+               this.sourceStart = type.sourceStart;
+               this.sourceEnd = sourceEnd;
+       }
+
+       public FlowInfo analyseCode(
+               BlockScope currentScope,
+               FlowContext flowContext,
+               FlowInfo flowInfo) {
+
+               // if reachable, request the addition of a synthetic field for caching the class descriptor
+               SourceTypeBinding sourceType = currentScope.outerMostClassScope().enclosingSourceType();
+               // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=22334
+               if (!sourceType.isInterface()
+                               && !targetType.isBaseType()
+                               && currentScope.compilerOptions().sourceLevel < ClassFileConstants.JDK1_5) {
+                       syntheticField = sourceType.addSyntheticFieldForClassLiteral(targetType, currentScope);
+               }
+               return flowInfo;
+       }
+
+       /**
+        * MessageSendDotClass code generation
+        *
+        * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
+        * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
+        * @param valueRequired boolean
+        */
+       public void generateCode(
+               BlockScope currentScope,
+               CodeStream codeStream,
+               boolean valueRequired) {
+               int pc = codeStream.position;
+
+               // in interface case, no caching occurs, since cannot make a cache field for interface
+               if (valueRequired) {
+                       codeStream.generateClassLiteralAccessForType(type.resolvedType, syntheticField);
+                       codeStream.generateImplicitConversion(this.implicitConversion);
+               }
+               codeStream.recordPositionsFrom(pc, this.sourceStart);
+       }
+
+       public StringBuffer printExpression(int indent, StringBuffer output) {
+
+               return type.print(0, output).append(".class"); //$NON-NLS-1$
+       }
+
+       public TypeBinding resolveType(BlockScope scope) {
+
+               constant = Constant.NotAConstant;
+               if ((targetType = type.resolveType(scope, true /* check bounds*/)) == null)
+                       return null;
+
+               if (targetType.isArrayType()) {
+                       ArrayBinding arrayBinding = (ArrayBinding) this.targetType;
+                       TypeBinding leafComponentType = arrayBinding.leafComponentType;
+                       if (leafComponentType == TypeBinding.VOID) {
+                               scope.problemReporter().cannotAllocateVoidArray(this);
+                               return null;
+                       } else if (leafComponentType.isTypeVariable()) {
+                               scope.problemReporter().illegalClassLiteralForTypeVariable((TypeVariableBinding)leafComponentType, this);
+                       }
+               } else if (this.targetType.isTypeVariable()) {
+                       scope.problemReporter().illegalClassLiteralForTypeVariable((TypeVariableBinding)targetType, this);
+               }
+               ReferenceBinding classType = scope.getJavaLangClass();
+               if (classType.isGenericType()) {
+                       // Integer.class --> Class<Integer>, perform boxing of base types (int.class --> Class<Integer>)
+                       TypeBinding boxedType = null;
+                       if (targetType.id == T_void) {
+                               boxedType = scope.environment().getResolvedType(JAVA_LANG_VOID, scope);
+                       } else {
+                               boxedType = scope.boxing(targetType);
+                       }
+                       this.resolvedType = scope.environment().createParameterizedType(classType, new TypeBinding[]{ boxedType }, null/*not a member*/);
+               } else {
+                       this.resolvedType = classType;
+               }
+               return this.resolvedType;
+       }
+
+       public void traverse(
+               ASTVisitor visitor,
+               BlockScope blockScope) {
+
+               if (visitor.visit(this, blockScope)) {
+                       type.traverse(visitor, blockScope);
+               }
+               visitor.endVisit(this, blockScope);
+       }
+}