+++ /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.classfmt.ClassFileConstants;
-import org.eclipse.jdt.internal.compiler.codegen.*;
-import org.eclipse.jdt.internal.compiler.flow.*;
-import org.eclipse.jdt.internal.compiler.lookup.*;
-import org.eclipse.jdt.internal.compiler.problem.ProblemSeverities;
-
-public class SingleNameReference extends NameReference implements OperatorIds {
- public char[] token;
-
- public MethodBinding[] syntheticAccessors; // [0]=read accessor [1]=write accessor
- public static final int READ = 0;
- public static final int WRITE = 1;
-
- public SingleNameReference(char[] source, long pos) {
- super();
- token = source;
- sourceStart = (int) (pos >>> 32);
- sourceEnd = (int) pos;
- }
- public FlowInfo analyseAssignment(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo, Assignment assignment, boolean isCompound) {
-
- boolean isReachable = flowInfo.isReachable();
- // compound assignment extra work
- if (isCompound) { // check the variable part is initialized if blank final
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // reading a field
- FieldBinding fieldBinding;
- if ((fieldBinding = (FieldBinding) binding).isBlankFinal()
- && currentScope.allowBlankFinalFieldAssignment(fieldBinding)) {
- if (!flowInfo.isDefinitelyAssigned(fieldBinding)) {
- currentScope.problemReporter().uninitializedBlankFinalField(fieldBinding, this);
- }
- }
- manageSyntheticReadAccessIfNecessary(currentScope, flowInfo);
- break;
- case LOCAL : // reading a local variable
- // check if assigning a final blank field
- LocalVariableBinding localBinding;
- if (!flowInfo.isDefinitelyAssigned(localBinding = (LocalVariableBinding) binding)) {
- currentScope.problemReporter().uninitializedLocalVariable(localBinding, this);
- // we could improve error msg here telling "cannot use compound assignment on final local variable"
- }
- if (isReachable) {
- localBinding.useFlag = LocalVariableBinding.USED;
- } else if (localBinding.useFlag == LocalVariableBinding.UNUSED) {
- localBinding.useFlag = LocalVariableBinding.FAKE_USED;
- }
- }
- }
- if (assignment.expression != null) {
- flowInfo = assignment.expression.analyseCode(currentScope, flowContext, flowInfo).unconditionalInits();
- }
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // assigning to a field
- manageSyntheticWriteAccessIfNecessary(currentScope, flowInfo);
-
- // check if assigning a final field
- FieldBinding fieldBinding;
- if ((fieldBinding = (FieldBinding) binding).isFinal()) {
- // inside a context where allowed
- if (!isCompound && fieldBinding.isBlankFinal() && currentScope.allowBlankFinalFieldAssignment(fieldBinding)) {
- if (flowInfo.isPotentiallyAssigned(fieldBinding)) {
- currentScope.problemReporter().duplicateInitializationOfBlankFinalField(fieldBinding, this);
- } else {
- flowContext.recordSettingFinal(fieldBinding, this, flowInfo);
- }
- flowInfo.markAsDefinitelyAssigned(fieldBinding);
- } else {
- currentScope.problemReporter().cannotAssignToFinalField(fieldBinding, this);
- }
- }
- break;
- case LOCAL : // assigning to a local variable
- LocalVariableBinding localBinding = (LocalVariableBinding) binding;
- if (!flowInfo.isDefinitelyAssigned(localBinding)){// for local variable debug attributes
- bits |= FirstAssignmentToLocalMASK;
- } else {
- bits &= ~FirstAssignmentToLocalMASK;
- }
- if (localBinding.isFinal()) {
- if ((bits & DepthMASK) == 0) {
- // tolerate assignment to final local in unreachable code (45674)
- if ((isReachable && isCompound) || !localBinding.isBlankFinal()){
- currentScope.problemReporter().cannotAssignToFinalLocal(localBinding, this);
- } else if (flowInfo.isPotentiallyAssigned(localBinding)) {
- currentScope.problemReporter().duplicateInitializationOfFinalLocal(localBinding, this);
- } else {
- flowContext.recordSettingFinal(localBinding, this, flowInfo);
- }
- } else {
- currentScope.problemReporter().cannotAssignToFinalOuterLocal(localBinding, this);
- }
- }
- flowInfo.markAsDefinitelyAssigned(localBinding);
- }
- manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo);
- return flowInfo;
- }
- public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
- return analyseCode(currentScope, flowContext, flowInfo, true);
- }
- public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo, boolean valueRequired) {
-
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // reading a field
- if (valueRequired) {
- manageSyntheticReadAccessIfNecessary(currentScope, flowInfo);
- }
- // check if reading a final blank field
- FieldBinding fieldBinding;
- if ((fieldBinding = (FieldBinding) binding).isBlankFinal()
- && currentScope.allowBlankFinalFieldAssignment(fieldBinding)) {
- if (!flowInfo.isDefinitelyAssigned(fieldBinding)) {
- currentScope.problemReporter().uninitializedBlankFinalField(fieldBinding, this);
- }
- }
- break;
- case LOCAL : // reading a local variable
- LocalVariableBinding localBinding;
- if (!flowInfo.isDefinitelyAssigned(localBinding = (LocalVariableBinding) binding)) {
- currentScope.problemReporter().uninitializedLocalVariable(localBinding, this);
- }
- if (flowInfo.isReachable()) {
- localBinding.useFlag = LocalVariableBinding.USED;
- } else if (localBinding.useFlag == LocalVariableBinding.UNUSED) {
- localBinding.useFlag = LocalVariableBinding.FAKE_USED;
- }
- }
- if (valueRequired) {
- manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo);
- }
- return flowInfo;
- }
- public TypeBinding checkFieldAccess(BlockScope scope) {
-
- FieldBinding fieldBinding = (FieldBinding) binding;
-
- bits &= ~RestrictiveFlagMASK; // clear bits
- bits |= FIELD;
- if (!((FieldBinding) binding).isStatic()) {
- // must check for the static status....
- if (scope.methodScope().isStatic) {
- scope.problemReporter().staticFieldAccessToNonStaticVariable(this, fieldBinding);
- constant = NotAConstant;
- return fieldBinding.type;
- }
- }
- constant = FieldReference.getConstantFor(fieldBinding, this, true, scope);
-
- if (isFieldUseDeprecated(fieldBinding, scope, (this.bits & IsStrictlyAssignedMASK) !=0))
- scope.problemReporter().deprecatedField(fieldBinding, this);
-
- MethodScope ms = scope.methodScope();
- if ((this.bits & IsStrictlyAssignedMASK) == 0
- && ms.enclosingSourceType() == fieldBinding.declaringClass
- && ms.lastVisibleFieldID >= 0
- && fieldBinding.id >= ms.lastVisibleFieldID) {
- //if the field is static and ms is not .... then it is valid
- if (!fieldBinding.isStatic() || ms.isStatic)
- scope.problemReporter().forwardReference(this, 0, scope.enclosingSourceType());
- }
- //====================================================
-
- return fieldBinding.type;
-
- }
- public void generateAssignment(BlockScope currentScope, CodeStream codeStream, Assignment assignment, boolean valueRequired) {
-
- // optimizing assignment like: i = i + 1 or i = 1 + i
- if (assignment.expression.isCompactableOperation()) {
- BinaryExpression operation = (BinaryExpression) assignment.expression;
- SingleNameReference variableReference;
- if ((operation.left instanceof SingleNameReference) && ((variableReference = (SingleNameReference) operation.left).binding == binding)) {
- // i = i + value, then use the variable on the right hand side, since it has the correct implicit conversion
- variableReference.generateCompoundAssignment(currentScope, codeStream, syntheticAccessors == null ? null : syntheticAccessors[WRITE], operation.right, (operation.bits & OperatorMASK) >> OperatorSHIFT, operation.left.implicitConversion /*should be equivalent to no conversion*/, valueRequired);
- return;
- }
- int operator = (operation.bits & OperatorMASK) >> OperatorSHIFT;
- if ((operation.right instanceof SingleNameReference)
- && ((operator == PLUS) || (operator == MULTIPLY)) // only commutative operations
- && ((variableReference = (SingleNameReference) operation.right).binding == binding)
- && (operation.left.constant != NotAConstant) // exclude non constant expressions, since could have side-effect
- && ((operation.left.implicitConversion >> 4) != T_String) // exclude string concatenation which would occur backwards
- && ((operation.right.implicitConversion >> 4) != T_String)) { // exclude string concatenation which would occur backwards
- // i = value + i, then use the variable on the right hand side, since it has the correct implicit conversion
- variableReference.generateCompoundAssignment(currentScope, codeStream, syntheticAccessors == null ? null : syntheticAccessors[WRITE], operation.left, operator, operation.right.implicitConversion /*should be equivalent to no conversion*/, valueRequired);
- return;
- }
- }
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // assigning to a field
- FieldBinding fieldBinding;
- if (!(fieldBinding = (FieldBinding) this.codegenBinding).isStatic()) { // need a receiver?
- if ((bits & DepthMASK) != 0) {
- ReferenceBinding targetType = currentScope.enclosingSourceType().enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT);
- Object[] emulationPath = currentScope.getEmulationPath(targetType, true /*only exact match*/, false/*consider enclosing arg*/);
- codeStream.generateOuterAccess(emulationPath, this, targetType, currentScope);
- } else {
- this.generateReceiver(codeStream);
- }
- }
- assignment.expression.generateCode(currentScope, codeStream, true);
- fieldStore(codeStream, fieldBinding, syntheticAccessors == null ? null : syntheticAccessors[WRITE], valueRequired);
- if (valueRequired) {
- codeStream.generateImplicitConversion(assignment.implicitConversion);
- }
- return;
- case LOCAL : // assigning to a local variable
- LocalVariableBinding localBinding = (LocalVariableBinding) this.codegenBinding;
- if (localBinding.resolvedPosition != -1) {
- assignment.expression.generateCode(currentScope, codeStream, true);
- } else {
- if (assignment.expression.constant != NotAConstant) {
- // assigning an unused local to a constant value = no actual assignment is necessary
- if (valueRequired) {
- codeStream.generateConstant(assignment.expression.constant, assignment.implicitConversion);
- }
- } else {
- assignment.expression.generateCode(currentScope, codeStream, true);
- /* Even though the value may not be required, we force it to be produced, and discard it later
- on if it was actually not necessary, so as to provide the same behavior as JDK1.2beta3. */
- if (valueRequired) {
- codeStream.generateImplicitConversion(assignment.implicitConversion); // implicit conversion
- } else {
- if ((localBinding.type == LongBinding) || (localBinding.type == DoubleBinding)) {
- codeStream.pop2();
- } else {
- codeStream.pop();
- }
- }
- }
- return;
- }
- // 26903, need extra cast to store null in array local var
- if (localBinding.type.isArrayType()
- && (assignment.expression.resolvedType == NullBinding // arrayLoc = null
- || ((assignment.expression instanceof CastExpression) // arrayLoc = (type[])null
- && (((CastExpression)assignment.expression).innermostCastedExpression().resolvedType == NullBinding)))){
- codeStream.checkcast(localBinding.type);
- }
-
- // normal local assignment (since cannot store in outer local which are final locations)
- codeStream.store(localBinding, valueRequired);
- if ((bits & FirstAssignmentToLocalMASK) != 0) { // for local variable debug attributes
- localBinding.recordInitializationStartPC(codeStream.position);
- }
- // implicit conversion
- if (valueRequired) {
- codeStream.generateImplicitConversion(assignment.implicitConversion);
- }
- }
- }
- public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
- int pc = codeStream.position;
- if (constant != NotAConstant) {
- if (valueRequired) {
- codeStream.generateConstant(constant, implicitConversion);
- }
- } else {
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // reading a field
- FieldBinding fieldBinding;
- if (valueRequired) {
- if ((fieldBinding = (FieldBinding) this.codegenBinding).constant == NotAConstant) { // directly use inlined value for constant fields
- boolean isStatic;
- if (!(isStatic = fieldBinding.isStatic())) {
- if ((bits & DepthMASK) != 0) {
- ReferenceBinding targetType = currentScope.enclosingSourceType().enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT);
- Object[] emulationPath = currentScope.getEmulationPath(targetType, true /*only exact match*/, false/*consider enclosing arg*/);
- codeStream.generateOuterAccess(emulationPath, this, targetType, currentScope);
- } else {
- generateReceiver(codeStream);
- }
- }
- // managing private access
- if ((syntheticAccessors == null) || (syntheticAccessors[READ] == null)) {
- if (isStatic) {
- codeStream.getstatic(fieldBinding);
- } else {
- codeStream.getfield(fieldBinding);
- }
- } else {
- codeStream.invokestatic(syntheticAccessors[READ]);
- }
- codeStream.generateImplicitConversion(implicitConversion);
- } else { // directly use the inlined value
- codeStream.generateConstant(fieldBinding.constant, implicitConversion);
- }
- }
- break;
- case LOCAL : // reading a local
- LocalVariableBinding localBinding = (LocalVariableBinding) this.codegenBinding;
- if (valueRequired) {
- // outer local?
- if ((bits & DepthMASK) != 0) {
- // outer local can be reached either through a synthetic arg or a synthetic field
- VariableBinding[] path = currentScope.getEmulationPath(localBinding);
- codeStream.generateOuterAccess(path, this, localBinding, currentScope);
- } else {
- // regular local variable read
- codeStream.load(localBinding);
- }
- codeStream.generateImplicitConversion(implicitConversion);
- }
- }
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
- }
- /*
- * Regular API for compound assignment, relies on the fact that there is only one reference to the
- * variable, which carries both synthetic read/write accessors.
- * The APIs with an extra argument is used whenever there are two references to the same variable which
- * are optimized in one access: e.g "a = a + 1" optimized into "a++".
- */
- public void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired) {
-
- this.generateCompoundAssignment(
- currentScope,
- codeStream,
- syntheticAccessors == null ? null : syntheticAccessors[WRITE],
- expression,
- operator,
- assignmentImplicitConversion,
- valueRequired);
- }
- /*
- * The APIs with an extra argument is used whenever there are two references to the same variable which
- * are optimized in one access: e.g "a = a + 1" optimized into "a++".
- */
- public void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, MethodBinding writeAccessor, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired) {
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // assigning to a field
- FieldBinding fieldBinding;
- if ((fieldBinding = (FieldBinding) this.codegenBinding).isStatic()) {
- if ((syntheticAccessors == null) || (syntheticAccessors[READ] == null)) {
- codeStream.getstatic(fieldBinding);
- } else {
- codeStream.invokestatic(syntheticAccessors[READ]);
- }
- } else {
- if ((bits & DepthMASK) != 0) {
- ReferenceBinding targetType = currentScope.enclosingSourceType().enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT);
- Object[] emulationPath = currentScope.getEmulationPath(targetType, true /*only exact match*/, false/*consider enclosing arg*/);
- codeStream.generateOuterAccess(emulationPath, this, targetType, currentScope);
- } else {
- codeStream.aload_0();
- }
- codeStream.dup();
- if ((syntheticAccessors == null) || (syntheticAccessors[READ] == null)) {
- codeStream.getfield(fieldBinding);
- } else {
- codeStream.invokestatic(syntheticAccessors[READ]);
- }
- }
- break;
- case LOCAL : // assigning to a local variable (cannot assign to outer local)
- LocalVariableBinding localBinding = (LocalVariableBinding) this.codegenBinding;
- Constant assignConstant;
- int increment;
- // using incr bytecode if possible
- switch (localBinding.type.id) {
- case T_String :
- codeStream.generateStringAppend(currentScope, this, expression);
- if (valueRequired) {
- codeStream.dup();
- }
- codeStream.store(localBinding, false);
- return;
- case T_int :
- if (((assignConstant = expression.constant) != NotAConstant)
- && (assignConstant.typeID() != T_float) // only for integral types
- && (assignConstant.typeID() != T_double)
- && ((increment = assignConstant.intValue()) == (short) increment)) { // 16 bits value
- switch (operator) {
- case PLUS :
- codeStream.iinc(localBinding.resolvedPosition, increment);
- if (valueRequired) {
- codeStream.load(localBinding);
- }
- return;
- case MINUS :
- codeStream.iinc(localBinding.resolvedPosition, -increment);
- if (valueRequired) {
- codeStream.load(localBinding);
- }
- return;
- }
- }
- default :
- codeStream.load(localBinding);
- }
- }
- // perform the actual compound operation
- int operationTypeID;
- if ((operationTypeID = implicitConversion >> 4) == T_String || operationTypeID == T_Object) {
- // we enter here if the single name reference is a field of type java.lang.String or if the type of the
- // operation is java.lang.Object
- // For example: o = o + ""; // where the compiled type of o is java.lang.Object.
- 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);
- }
- // store the result back into the variable
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // assigning to a field
- fieldStore(codeStream, (FieldBinding) this.codegenBinding, writeAccessor, valueRequired);
- return;
- case LOCAL : // assigning to a local variable
- LocalVariableBinding localBinding = (LocalVariableBinding) this.codegenBinding;
- if (valueRequired) {
- if ((localBinding.type == LongBinding) || (localBinding.type == DoubleBinding)) {
- codeStream.dup2();
- } else {
- codeStream.dup();
- }
- }
- codeStream.store(localBinding, false);
- }
- }
-
- public void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired) {
- switch (bits & RestrictiveFlagMASK) {
- case FIELD : // assigning to a field
- FieldBinding fieldBinding;
- if ((fieldBinding = (FieldBinding) this.codegenBinding).isStatic()) {
- if ((syntheticAccessors == null) || (syntheticAccessors[READ] == null)) {
- codeStream.getstatic(fieldBinding);
- } else {
- codeStream.invokestatic(syntheticAccessors[READ]);
- }
- } else {
- if ((bits & DepthMASK) != 0) {
- ReferenceBinding targetType = currentScope.enclosingSourceType().enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT);
- Object[] emulationPath = currentScope.getEmulationPath(targetType, true /*only exact match*/, false/*consider enclosing arg*/);
- codeStream.generateOuterAccess(emulationPath, this, targetType, currentScope);
- } else {
- codeStream.aload_0();
- }
- codeStream.dup();
- if ((syntheticAccessors == null) || (syntheticAccessors[READ] == null)) {
- codeStream.getfield(fieldBinding);
- } else {
- codeStream.invokestatic(syntheticAccessors[READ]);
- }
- }
- if (valueRequired) {
- if (fieldBinding.isStatic()) {
- if ((fieldBinding.type == LongBinding) || (fieldBinding.type == DoubleBinding)) {
- codeStream.dup2();
- } else {
- codeStream.dup();
- }
- } else { // Stack: [owner][old field value] ---> [old field value][owner][old field value]
- if ((fieldBinding.type == LongBinding) || (fieldBinding.type == DoubleBinding)) {
- codeStream.dup2_x1();
- } else {
- codeStream.dup_x1();
- }
- }
- }
- codeStream.generateConstant(postIncrement.expression.constant, implicitConversion);
- codeStream.sendOperator(postIncrement.operator, fieldBinding.type.id);
- codeStream.generateImplicitConversion(postIncrement.assignmentImplicitConversion);
- fieldStore(codeStream, fieldBinding, syntheticAccessors == null ? null : syntheticAccessors[WRITE], false);
- return;
- case LOCAL : // assigning to a local variable
- LocalVariableBinding localBinding = (LocalVariableBinding) this.codegenBinding;
- // using incr bytecode if possible
- if (localBinding.type == IntBinding) {
- if (valueRequired) {
- codeStream.load(localBinding);
- }
- if (postIncrement.operator == PLUS) {
- codeStream.iinc(localBinding.resolvedPosition, 1);
- } else {
- codeStream.iinc(localBinding.resolvedPosition, -1);
- }
- } else {
- codeStream.load(localBinding);
- if (valueRequired){
- if ((localBinding.type == LongBinding) || (localBinding.type == DoubleBinding)) {
- codeStream.dup2();
- } else {
- codeStream.dup();
- }
- }
- codeStream.generateConstant(postIncrement.expression.constant, implicitConversion);
- codeStream.sendOperator(postIncrement.operator, localBinding.type.id);
- codeStream.generateImplicitConversion(postIncrement.assignmentImplicitConversion);
-
- codeStream.store(localBinding, false);
- }
- }
- }
-
- public void generateReceiver(CodeStream codeStream) {
-
- codeStream.aload_0();
- }
-
- public void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
-
- if (!flowInfo.isReachable()) return;
- //If inlinable field, forget the access emulation, the code gen will directly target it
- if (((bits & DepthMASK) == 0) || (constant != NotAConstant)) return;
-
- if ((bits & RestrictiveFlagMASK) == LOCAL) {
- currentScope.emulateOuterAccess((LocalVariableBinding) binding);
- }
- }
- public void manageSyntheticReadAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
-
- if (!flowInfo.isReachable()) return;
-
- //If inlinable field, forget the access emulation, the code gen will directly target it
- if (constant != NotAConstant)
- return;
-
- if ((bits & FIELD) != 0) {
- FieldBinding fieldBinding = (FieldBinding) binding;
- if (((bits & DepthMASK) != 0)
- && (fieldBinding.isPrivate() // private access
- || (fieldBinding.isProtected() // implicit protected access
- && fieldBinding.declaringClass.getPackage()
- != currentScope.enclosingSourceType().getPackage()))) {
- if (syntheticAccessors == null)
- syntheticAccessors = new MethodBinding[2];
- syntheticAccessors[READ] =
- ((SourceTypeBinding)currentScope.enclosingSourceType().
- enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT)).
- addSyntheticMethod(fieldBinding, true);
- currentScope.problemReporter().needToEmulateFieldReadAccess(fieldBinding, this);
- return;
- }
- // if the binding declaring class is not visible, need special action
- // for runtime compatibility on 1.2 VMs : change the declaring class of the binding
- // NOTE: from target 1.2 on, field's declaring class is touched if any different from receiver type
- // and not from Object or implicit static field access.
- if (fieldBinding.declaringClass != this.actualReceiverType
- && !this.actualReceiverType.isArrayType()
- && fieldBinding.declaringClass != null
- && fieldBinding.constant == NotAConstant
- && ((currentScope.environment().options.targetJDK >= ClassFileConstants.JDK1_2
- && !fieldBinding.isStatic()
- && fieldBinding.declaringClass.id != T_Object) // no change for Object fields (if there was any)
- || !fieldBinding.declaringClass.canBeSeenBy(currentScope))){
- this.codegenBinding = currentScope.enclosingSourceType().getUpdatedFieldBinding(fieldBinding, (ReferenceBinding)this.actualReceiverType);
- }
- }
- }
- public void manageSyntheticWriteAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
-
- if (!flowInfo.isReachable()) return;
- if ((bits & FIELD) != 0) {
- FieldBinding fieldBinding = (FieldBinding) binding;
- if (((bits & DepthMASK) != 0)
- && (fieldBinding.isPrivate() // private access
- || (fieldBinding.isProtected() // implicit protected access
- && fieldBinding.declaringClass.getPackage()
- != currentScope.enclosingSourceType().getPackage()))) {
- if (syntheticAccessors == null)
- syntheticAccessors = new MethodBinding[2];
- syntheticAccessors[WRITE] =
- ((SourceTypeBinding)currentScope.enclosingSourceType().
- enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT)).
- addSyntheticMethod(fieldBinding, false);
- currentScope.problemReporter().needToEmulateFieldWriteAccess(fieldBinding, this);
- return;
- }
- // if the binding declaring class is not visible, need special action
- // for runtime compatibility on 1.2 VMs : change the declaring class of the binding
- // NOTE: from target 1.2 on, field's declaring class is touched if any different from receiver type
- // and not from Object or implicit static field access.
- if (fieldBinding.declaringClass != this.actualReceiverType
- && !this.actualReceiverType.isArrayType()
- && fieldBinding.declaringClass != null
- && fieldBinding.constant == NotAConstant
- && ((currentScope.environment().options.targetJDK >= ClassFileConstants.JDK1_2
- && !fieldBinding.isStatic()
- && fieldBinding.declaringClass.id != T_Object) // no change for Object fields (if there was any)
- || !fieldBinding.declaringClass.canBeSeenBy(currentScope))){
- this.codegenBinding = currentScope.enclosingSourceType().getUpdatedFieldBinding(fieldBinding, (ReferenceBinding)this.actualReceiverType);
- }
- }
- }
- public StringBuffer printExpression(int indent, StringBuffer output){
-
- return output.append(token);
- }
-
- public TypeBinding reportError(BlockScope scope) {
-
- //=====error cases=======
- constant = Constant.NotAConstant;
- if (binding instanceof ProblemFieldBinding) {
- scope.problemReporter().invalidField(this, (FieldBinding) binding);
- } else if (binding instanceof ProblemReferenceBinding) {
- scope.problemReporter().invalidType(this, (TypeBinding) binding);
- } else {
- scope.problemReporter().unresolvableReference(this, binding);
- }
- return null;
- }
- public TypeBinding resolveType(BlockScope scope) {
- // for code gen, harm the restrictiveFlag
-
- this.actualReceiverType = this.receiverType = scope.enclosingSourceType();
-
- if ((this.codegenBinding = this.binding = scope.getBinding(token, bits & RestrictiveFlagMASK, this, true /*resolve*/)).isValidBinding()) {
- switch (bits & RestrictiveFlagMASK) {
- case VARIABLE : // =========only variable============
- case VARIABLE | TYPE : //====both variable and type============
- if (binding instanceof VariableBinding) {
- VariableBinding variable = (VariableBinding) binding;
- if (binding instanceof LocalVariableBinding) {
- bits &= ~RestrictiveFlagMASK; // clear bits
- bits |= LOCAL;
- if ((this.bits & IsStrictlyAssignedMASK) == 0) {
- constant = variable.constant;
- } else {
- constant = NotAConstant;
- }
- if (!variable.isFinal() && (bits & DepthMASK) != 0) {
- scope.problemReporter().cannotReferToNonFinalOuterLocal((LocalVariableBinding)variable, this);
- }
- return this.resolvedType = variable.type;
- }
- // a field
- FieldBinding field = (FieldBinding) this.binding;
- if (!field.isStatic() && scope.environment().options.getSeverity(CompilerOptions.UnqualifiedFieldAccess) != ProblemSeverities.Ignore) {
- scope.problemReporter().unqualifiedFieldAccess(this, field);
- }
- return this.resolvedType = checkFieldAccess(scope);
- }
-
- // thus it was a type
- bits &= ~RestrictiveFlagMASK; // clear bits
- bits |= TYPE;
- case TYPE : //========only type==============
- constant = Constant.NotAConstant;
- //deprecated test
- if (isTypeUseDeprecated((TypeBinding) binding, scope))
- scope.problemReporter().deprecatedType((TypeBinding) binding, this);
- return this.resolvedType = (TypeBinding) binding;
- }
- }
-
- // error scenarii
- return this.resolvedType = this.reportError(scope);
- }
-
- public void traverse(ASTVisitor visitor, BlockScope scope) {
-
- visitor.visit(this, scope);
- visitor.endVisit(this, scope);
- }
-
- public String unboundReferenceErrorName(){
-
- return new String(token);
- }
-}
projects / org.ibex.tool.git / blobdiff