+++ /dev/null
-/*******************************************************************************
- * 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.phpeclipse.internal.compiler.ast;
-
-import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
-import net.sourceforge.phpdt.internal.compiler.lookup.ArrayBinding;
-import net.sourceforge.phpdt.internal.compiler.lookup.BaseTypeBinding;
-import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
-import net.sourceforge.phpdt.internal.compiler.lookup.LocalVariableBinding;
-import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
-
-
-public class LocalDeclaration extends AbstractVariableDeclaration {
-
- public LocalVariableBinding binding;
-
- public LocalDeclaration(
- Expression expr,
- char[] name,
- int sourceStart,
- int sourceEnd) {
-
- initialization = expr;
- this.name = name;
- this.sourceStart = sourceStart;
- this.sourceEnd = sourceEnd;
- if (initialization != null) {
- this.declarationSourceEnd = initialization.sourceEnd;
- this.declarationEnd = initialization.sourceEnd;
- } else {
- this.declarationEnd = sourceEnd;
- }
- }
-
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
-
- // record variable initialization if any
- if (flowInfo.isReachable()) {
- bits |= IsLocalDeclarationReachableMASK; // only set if actually reached
- }
- if (initialization == null)
- return flowInfo;
-
- flowInfo =
- initialization
- .analyseCode(currentScope, flowContext, flowInfo)
- .unconditionalInits();
-
- // final int i = (i = 0);
- // no need to complain since (i = 0) part will get the blame
- //if (binding.isFinal() && flowInfo.isPotentiallyAssigned(binding)) {
- // currentScope.problemReporter().duplicateInitializationOfFinalLocal(binding, this);
- //}
-
- flowInfo.markAsDefinitelyAssigned(binding);
- return flowInfo;
- }
-
- public void checkModifiers() {
-
- //only potential valid modifier is <<final>>
- if (((modifiers & AccJustFlag) & ~AccFinal) != 0)
- //AccModifierProblem -> other (non-visibility problem)
- //AccAlternateModifierProblem -> duplicate modifier
- //AccModifierProblem | AccAlternateModifierProblem -> visibility problem"
-
- modifiers = (modifiers & ~AccAlternateModifierProblem) | AccModifierProblem;
- }
-
- /**
- * Code generation for a local declaration:
- * normal assignment to a local variable + unused variable handling
- */
-// public void generateCode(BlockScope currentScope, CodeStream codeStream) {
-//
-// // even if not reachable, variable must be added to visible if allocated (28298)
-// if (binding.resolvedPosition != -1) {
-// codeStream.addVisibleLocalVariable(binding);
-// }
-// if ((bits & IsReachableMASK) == 0) {
-// return;
-// }
-// int pc = codeStream.position;
-// Constant inlinedValue;
-//
-// // something to initialize?
-// if (initialization != null) {
-// // initialize to constant value?
-// if ((inlinedValue = initialization.constant) != NotAConstant) {
-// // forget initializing unused or final locals set to constant value (final ones are inlined)
-// if (binding.resolvedPosition != -1) { // may need to preserve variable
-// int initPC = codeStream.position;
-// codeStream.generateConstant(inlinedValue, initialization.implicitConversion);
-// codeStream.recordPositionsFrom(initPC, initialization.sourceStart);
-// codeStream.store(binding, false);
-// binding.recordInitializationStartPC(codeStream.position);
-// // codeStream.lastInitStateIndexWhenRemovingInits = -2; // reinitialize remove index
-// // codeStream.lastInitStateIndexWhenAddingInits = -2; // reinitialize add index
-// }
-// } else { // initializing to non-constant value
-// initialization.generateCode(currentScope, codeStream, true);
-// // if binding unused generate then discard the value
-// if (binding.resolvedPosition != -1) {
-// // 26903, need extra cast to store null in array local var
-// if (binding.type.isArrayType()
-// && (initialization.resolvedType == NullBinding // arrayLoc = null
-// || ((initialization instanceof CastExpression) // arrayLoc = (type[])null
-// && (((CastExpression)initialization).innermostCastedExpression().resolvedType == NullBinding)))){
-// codeStream.checkcast(binding.type);
-// }
-// codeStream.store(binding, false);
-// if (binding.initializationCount == 0) {
-// /* Variable may have been initialized during the code initializing it
-// e.g. int i = (i = 1);
-// */
-// binding.recordInitializationStartPC(codeStream.position);
-// // codeStream.lastInitStateIndexWhenRemovingInits = -2; // reinitialize remove index
-// // codeStream.lastInitStateIndexWhenAddingInits = -2; // reinitialize add index
-// }
-// } else {
-// if ((binding.type == LongBinding) || (binding.type == DoubleBinding)) {
-// codeStream.pop2();
-// } else {
-// codeStream.pop();
-// }
-// }
-// }
-// }
-// codeStream.recordPositionsFrom(pc, this.sourceStart);
-// }
-
- public String name() {
-
- return String.valueOf(name);
- }
-
- public void resolve(BlockScope scope) {
-
- // create a binding and add it to the scope
- TypeBinding tb = type.resolveType(scope);
-
- checkModifiers();
-
- if (tb != null) {
- if (tb == VoidBinding) {
- scope.problemReporter().variableTypeCannotBeVoid(this);
- return;
- }
- if (tb.isArrayType() && ((ArrayBinding) tb).leafComponentType == VoidBinding) {
- scope.problemReporter().variableTypeCannotBeVoidArray(this);
- return;
- }
- }
-
- // duplicate checks
- if ((binding = scope.duplicateName(name)) != null) {
- // the name already exists... may carry on with the first binding...
- scope.problemReporter().redefineLocal(this);
- } else {
- if ((modifiers & AccFinal)!= 0 && this.initialization == null) {
- modifiers |= AccBlankFinal;
- }
- binding = new LocalVariableBinding(this, tb, modifiers, false);
- scope.addLocalVariable(binding);
- binding.constant = NotAConstant;
- // allow to recursivelly target the binding....
- // the correct constant is harmed if correctly computed at the end of this method
- }
-
- if (tb == null) {
- if (initialization != null)
- initialization.resolveType(scope); // want to report all possible errors
- return;
- }
-
- // store the constant for final locals
- if (initialization != null) {
- if (initialization instanceof ArrayInitializer) {
- TypeBinding initTb = initialization.resolveTypeExpecting(scope, tb);
- if (initTb != null) {
- ((ArrayInitializer) initialization).binding = (ArrayBinding) initTb;
- initialization.implicitWidening(tb, initTb);
- }
- } else {
- TypeBinding initTb = initialization.resolveType(scope);
- if (initTb != null) {
- if (initialization.isConstantValueOfTypeAssignableToType(initTb, tb)
- || (tb.isBaseType() && BaseTypeBinding.isWidening(tb.id, initTb.id))
- || initTb.isCompatibleWith(tb))
- initialization.implicitWidening(tb, initTb);
- else
- scope.problemReporter().typeMismatchError(initTb, tb, this);
- }
- }
-
- // change the constant in the binding when it is final
- // (the optimization of the constant propagation will be done later on)
- // cast from constant actual type to variable type
- binding.constant =
- binding.isFinal()
- ? initialization.constant.castTo((tb.id << 4) + initialization.constant.typeID())
- : NotAConstant;
- }
- }
-
- public void traverse(ASTVisitor visitor, BlockScope scope) {
-
- if (visitor.visit(this, scope)) {
- type.traverse(visitor, scope);
- if (initialization != null)
- initialization.traverse(visitor, scope);
- }
- visitor.endVisit(this, scope);
- }
-}
git://git.phpeclipse.com / phpeclipse.git / blobdiff